DE19833868A1 - Instrument to puncture skin to draw drop of blood for medical analysis has a suction cup with a suction pump to lie on the skin with a test strip which immediately absorbs the blood from the prick - Google Patents

Abstract

A new instrument for puncturing the skin to draw a drop of blood for medical analysis, has a pointed puncture pin within a suction cup (1) linked to an underpressure. It is pressed into the skin and then retracted by a pressure unit across the penetration direction. A new instrument for puncturing the skin to draw a drop of blood for medical analysis, has a pointed puncture pin within a suction cup (1) linked to an underpressure. It is pressed into the skin and then retracted by a pressure unit across the penetration direction. At least a part of the suction cup is mounted within a suction pump as a partial shrouding. The suction pump is a piston/cylinder assembly to expand a sealing zone defined by a wall. A further tube is within the suction cup for an additional underpressure control. The suction cup is central and axially parallel to the suction pump axis, with a larger diameter than the height expansion.

Description

Task

The withdrawal of blood also from the fingertips or small amounts Earlobes for blood cell testing or for Determination of metabolic products, such as glucose, acetone, urinary substances, drug residues, drugs painful and dangerous as far as the fingertips are used with many foreign substances and pathogens in Get in touch. The scarring is also sensitive detrimental (e.g. musicians). Above all, the more common, yes daily control, as with blood sugar, impossible.

State of the art

The state of the art is mainly based on the published documents EP 0 798 003 A1 and DE 39 25 940 A1. The described Devices are still technically very complex.

Solution of the task

The task is solved in that almost any Body part of the skin sucked into a suction cup, the test strip with a puncture tip approached the skin and the puncture tip is moved across the skin using a pressure transducer.

This makes the skin deeper and sparser than in Muscle flesh destroys existing blood and the blood can get into that Test field or be sucked up into a collecting capillary.

What is new about this invention is the arrangement of the suction bell inside a bellows as a suction pump. This is possible if as Pressure transmitter uses an electromagnet whose energy supply and control can be carried out via lines, which none Pose sealing problems. The trigger mechanism is closed too simplify and the location of the suction cup can be central.

Improvements also concern vacuum regulation.  

The function control and handling could be simplified Test strips are shortened to an approximately square plate. The bellows can eventually be limited to a single fold become. Then there are no special wall reinforcements (to towards reinforcement rings, such as wire rings in the outer bulges of wrinkles) necessary to prevent the collapse from air pressure to prevent from the outside. Preferably inside directional fold valley of the individual fold will unfold after unfolding pulled on the outside and by the strong compression spring or springs stretched against the air pressure. Hardly stretchable fabric inserts in the rubber-like bellows ensure this effect.

When the suction bell is inserted into the bellows itself none the pressure equalization between the pump and the suction cup interior delaying suction channels required. It can be the suction cup roof can be directly valve-fitted to negative pressure in the suction bell has dropped too much (approx strong skin hair with slip effect in the area of the suction cup rim) suck the air in again without need to tension the bellows compression spring again.

Finally, the suction cup roof can also be completely eliminated. Devices that act on the test strip with a puncture tip, such as pressure transmitters for the lateral jerky movement of the puncture agent, can be installed in the suction cup without additional sealing elements inside the suction cup wall. A longer carrier strip with several test fields, each with its own puncture tips, can even be inserted into a rail guide from below from the edge of the suction cup, in order to move the carrier strip (or here the test field) further via a wedge guide that is effective when the bellows roof is lowered. It is even more advantageous to insert a carrier disk with test fields arranged in the manner of a ring, which is rotated eccentrically in each case somewhat over the test field width above the puncture site. For this purpose, the bellows roof must be removable, for example by loosening a tension spring band, around the connection between the upper end section of the bellows (towards the roof plate, a sealing bead almost fitted into its annular groove is expediently provided, see FIG. 13) and the roof plate of the bellows. Such a device also facilitates internal cleaning and repairs to the functional parts. The test fields are punched out of the carrier strip or the carrier disc down to the base fold which is turned away from the puncture tip and are folded over at right angles from above by means of a drawer-like slide. An angled opening - shown for the carrier strip in the lower left details of Fig. 11 - serves to cancel the angular position of the used test field as well as the advancement of a pin on the lid container for stripping the protective cap over the puncture pin (right detail below center Fig. 11 ), which returns the slide to its upper position. The pin or angle guides, which are attached to the bellows cover, are brought out of their direction of action by means of spring-loaded tilting mechanisms by means of operating elements which are introduced in a sealed manner. The test field can thus be reused if the suction pump, ie the compression spring for the bellows, starts incorrectly. It is also possible to additionally mount a second carrier pane with test fields, to the side shifted in such a way that the windows of both panes, such as those which arise after a test field has been bent, overlap the puncture site.

At least the first lower carrier plate must then contain a (somewhat larger) empty window without a test field in order to allow the test field of the second upper carrier plate to pass through it. The crease edge of the second carrier disc is either offset or the test field (here in a broader sense also the carrier field for the chemically reacting part near the tip) is slightly extended. The less reaching down of the puncture tip from the second carrier disk can also be compensated for by the skin elevation in the suction cup. The collecting container for the caps over the puncture tips can be a disposable part which is attached or screwed onto the lid ( FIG. 11); it can also be connected without a bottom wall, with an elastic edge ring, for example, and thus with the lid.

It is useful to provide a hinged bracket, the Cross bar or cross band on the effective length of the bellows cover extends. Then the user does not press against the compression spring expansion against the puncture device against his skin. Furthermore, it is also appropriate to lower the Strap against the skin to trigger the locking mechanism for the strong compression spring or compression springs under to use the bellows. It happens here, for example the pushing apart of two spring claws between the base plate and bellows cover by means of a wedge end on the frame. The mechanism is at least in pairs.

The bow bars were arranged so that when folded they act on a roller guide which is arranged on the bellows cover. By lowering the latter by displacement, the strong compression spring for the bellows is tensioned using the energy-saving lever effect. In order to keep the puncture device narrow and pocket-compatible, i.e. to save height, the bow bars are arranged on the side and, for example, extend over the bellows cover with a right-angled cross bar. The ends can be connected by means of a belt strap which crosses over when the bow is folded down. The ends of the crossbars can also be guided within a common stirrup. The latter is particularly favorable when the two bow bars are closer together and thus rest on the bellows cover after they have been folded down ( FIG. 15 above).

As in examples from EP 0 798 004 A1 (laid-open specification) shown, a post-cut button was also shown here Supplement offered. This allows for insufficient cutting length without a new puncture a second Transverse movement of the puncture tip, if necessary also trigger manually. The stem of the post-cut key is parallel deflectable to the bellows cover on this in a joint, that after the suction pump is triggered by the cover seal is pulled down. Since the on the cross rod of the plunger of the Pressure wedge acting at an angle, he can can be pivoted away by rotating the recut button. This Swiveling movement is used to shorten a string, which such as the wedge for transporting a carrier strip or one Carrier disc folded over to the side. The transport function of the The puncture tip changing mechanism can thus be canceled. (The variant is also for other switching functions inside of the bellows.)

Since electromagnets are expensive and additional operating, energy and need control effort was used as a pressure sensor for the Transverse movement of the puncture tip on again the mechanical solutions from EP 1 079 804 A1 are used. A lowered through a hole in the tappet with the bellows cover Telescopic pole remains with its locking End back in the hole until the wedge to Tension of the pressure spring of the ram over its we  range is raised. For example, the Holding the test field (and its support) along one curved rail guided, the radius of which is selected such that the shaft of the Puncture pen moves a further distance than the puncture tip. The latter also moves in the reverse direction Ram movement. In this way there is one Wound gap expansion of the skin along the direction of tappet movement. There the fold of the skin is characterized by a split direction, it seems useful to add another one Wound gap expansion in the direction transverse to the direction of the plunger movement to provide. This is done by means of a spread special slats, whose relatively sharp ends Press in the skin next to the puncture tip and then from away from each other, d. H. be driven apart. The slats can in the plane of the carrier strip of this only by deep Incisions must be separated, that is, form its edge zone; it is then expedient, from these narrow side strips to the Skin-reaching processes under the carrier strip end to lead inward to the on the skin-edged ends more near the puncture tip to move. The slats can also be used as additional elastic layers the layers of the Carrier strips applied and only on their top-facing End to be connected to him. As a template for the carrier strip served the one that BAYER launched as an ELITE: there is a downward between two thin layer slats open capillary gap to the center of the rounding of the strip end, in which the blood calibrated exactly on the test field or - also for two separate measurement results - the test fields on the inside penetrates the layer lamella. The puncture pen is by means of Heat welded laterally onto an outer layer lamella  - at least to the side of the strip of an additional elastic Layer that serves to spread the skin gaps.

The spreading mechanism uses a wedge pin or a wedge lamella, which penetrate, for example, from the opposite side to the tappet as a pressure transmitter and in its opposite direction into a space which is enlarged by loop-like bends in the side lamellae or strips and push these side strips apart. This spring mechanism (unless electromagnets are used, which can also be designed as multifunction magnets) is unclamped from the bellows cover via a wedge slide or tensioning lever, but is only released again - for example via its rope - in the final phase of the cover lifting. A corresponding trigger or clamp lock prevents the function beforehand. (With the tension spring selected, this lock could also take place after an overstroke, as with a spring tension lock, as in principle according to FIG. 14 above and inside).

Also a particularly advantageous variant of the vacuum control the rules in P 197 45 600.6 and P 197 49 965.1 improved and simplified because the air intake in the suction pump room does not have to be controlled by an adjusting spring. This ensures that the bellows cover is in any case even with the different skin tension conditions End stroke reached, which is required for the control functions is. For this purpose, a controllable nozzle is placed in front of a pipe of a seal moved by a pin at least in the Position of the final stroke is closed. It can also be on an initial locking position that provides maximum suction guaranteed to raise the skin, a pipe opening up to the final stroke respectively. The valve closure can be in the pipe against a seal on a pin moved inside but also during assembly  the seal in the tube is made against the pin moved inside, the appropriate surface design - such as angles or ring grooves - having. A telescopic member is preferably used to to keep the device height low.

A wedge adjustable from below from the suction bell leaves as Anvil against the pressure transmitter regulate the cutting length. A wedge lowered from above with the bellows cover aligns the Puncture tip open again after use; this can be about Electromagnet or hand button before lowering the Bellows cover preferably coupled to the opening of a Ventilation valve happen. The risk of skin injury from the Retraction of the puncture tip in an inclined position is thus prevented. The visual or reflex photometric skin control of the Puncture site is facilitated by the fact that a suction cup roof absent and a compression of bellows and bellows lens-equipped viewing window of the skin can be approached.

For the diaphanic measurement of the skin is the improvement suggested one in the suction cup of the puncture tip upstream plates centrally with a funnel-shaped edge extension to be provided downwards so that the skin can pass through more safely Blocking of the plate lift can be prevented from the top can. The duplication of the test strip in one the tip and a part supporting the test field facilitates the method of Skin puncture approval for blood collection by the tip-bearing part of the test strip separated after the puncture and the sideways movement of the tip pulled up or - at Use of a carrier disc with several test fields can be flipped up.

The battery and the measuring device for analysis can be operated as a commercially available device (such as a glucometer) via a kind of socket or a cable with the signal pick-up contacts inside the receptacle ( Fig. 11 detail on the right). Advantageously, however, the measuring device is integrated in the bellows space, especially since there dead spaces by packing have to be avoided as far as possible. In order not to make the slipping in of the skin over the edge of the suction cup dependent on the pressure exerted by the user, the suction cup is advantageously arranged in a resilient manner towards the base plate of the housing. This is advantageously done here by means of a second small fold of the bellows, which bridges a gap between the circular recess in the base plate and the suction bell. The fold can be pressed deeper from the inside of the suction cup rim by means of three screw angle bolts evenly distributed over the circumference. In the latter case, the user can exert a higher pressure on the suction cup rim. The pressure transducer basket must be moved vertically along a column guide with the suction bell, the surface of the bellows can be metallized for hygienic reasons.

The combination with an (insulin) injector is possible. Not only should the examples shown be protected, but also combinations of the individual solutions described and solution steps. Also are not supposed to be repeated by Features and functional parts previously known from the application the new features of the invention are not excluded his. So the one shown almost exclusively here Puncture pen can also be replaced by a lancet, as is the Lateral movement of the puncture tip too done in a rail without the bow guide.

Instead of the bellows, you can also use a cylinder piston pump be used, but with the disadvantage of one Seal pitting due to quartz dust from the skin pores.  

The possibility of a skin slit was also expanded extension to next to the puncture pen or a Lancet the blood leak out to the surface of the skin let through the one-sided narrowing or displacement the top of the skin after opening the vessel. It can be this by the fact that after the lateral cut movement a wedge in the shape of the half cone is tight Abge next to the puncture pen in the central skin dent is lowered and thereby pushes the skin wall outwards.

The ring-shaped skin bulge can be one-sided or symmetrical after the lateral cutting movement also like pliers be narrowed to an elliptical cross-section on the outside. If the end of the test strip near the pen is pear-shaped end projection, d. H. he rejuvenates himself Intake shaft, the constriction, if - as be preferred - in the direction of the cutting plane for the punk tion stick is also used to keep the skin inside to fix the suction cup. Even if the suction subsides the skin does not pull out of the suction cup back. However, it is then expedient in the test strip Provide hole in which of the suspension of the receptacle shaft from a pin for height fixation snaps into place.

This pen must be a for the insertion of the test strip Beveled, followed by a steep flank upwards. It can also be on the cover and inward dish teten spring a line-shaped wedge bevel be provided which is replaced by the test strip, which then everyone dings must have a slot in which the wedge can snap at an angle. The release is done by easy Rotation of the test strip (in its pushed over Protective sleeve) around the puncture needle axis, the two  Branches of spring clips are pushed apart. The opposite spring branches also serve the signal tap on the conductor strips of the test strip and are therefore electrically isolated from each other.

The carriage for a curved guidance of the recording shaft and thus the puncture needle is appropriate guided in a roller bearing, the rollers on both sides of the sheet slotted for the mounting board. It can also be the end of the sled - possibly by means of small leaf spring emanating from it - the counter bearing in the one-sided narrowing of the top of the skin by the form the mechanism mentioned above. Will the vacuum generated by means of a compression spring and bellows extension, so can the last lifting phase to release force on one Act levers, which constricts the cross section of the skin. This constriction can also be used to re-vent the suction serve bell if the user in this phase up to Report of the blood saturation of the test field via the Meßge advises the suction cup rim to press against the skin. (The plate then for the skin narrowing downwards in Rich extended to the edge of the suction cup.)

The carriage for the receiving shaft is displaced gung its inclined upper edge when closing the lid under pressure spring tension for the pump back into the Mit brought tellage. This can be done using a tape and rol oil bearing also when a button is pressed for the seat ven til done for re-ventilation.

The fact that the entire puncture mechanism within the Pump room is also a horizontal microme screw for the adjustable locking of the slide movement behind and over the suction cup rim from the finger  can be achieved without raising the skin in the Suction cup is hindered. A thumbscrew or with With the help of a screwdriver even an adjusting screw The shortening of the pulling ropes and banks can be added to the lid and similar regulations serve without the housing endanger tightness.

The post-cut button for another side cut is still selected If the message for blood fails to appear Saturation can be a kind of stepped conic segment point. If the axis of the post-cut key is rotated, then be the rotation angle matches the length of the slider with the compression spring for the side cut wedge slopes with subsequent steep drop. This can be about via cable with the rotation of the micrometer screw for the dosing of the slide movement the role with the Conic section segments are rotated. This is on kan section of the post-cut key is height-adjustable and is heightened by a plate on the cover plate kept anchored. When the lid is lowered, under the rope free stretch, a tension spring turns the conical wedge out of function. One part is used to save height and ease of movement the puncture mechanism inside a pot into the Fold in the pump bellows. With preferably ova The housing shape is fixed between the base and Cover plate with the compression spring tensioned over inwards spring hook, which means in one embodiment Lowering of a wire bracket encircling the device housing can be pushed out of their seat.

Finally, the use of a battery electricity powered pump has become economical, after small blood pressure devices are on the market, whose man cuff is inflated around the wrist (e.g. Visomat  watch by Boehringer / Mannheim and Hestia). The training and Inputs must of course be used for a suction pump be exchanged. The pump principle is described in "How it works das "- The technology in today's life, Meyers Lexikonverlag Mannheim / Vienna / Zurich, Bibliogr. Inst. Mannheim 1986, pp. 278, 279 described. It can be useful to have a vacuum supply First save in the device housing and via valve opening after exposing the suction cup a valve to the vacuum open storage space. The negative pressure becomes appropriate also designed here to be controllable via a membrane; approximately in that the position of this membrane, which of the The level of the vacuum of the interior of the device is dependent, as a measuring section (only for example under contact contact stanchions of a rod carried along or along mechani contacts with lines).

The timing of the functions can be controlled, for example liert by contact points in the suction cup, which also can itself serve as a pressure measuring membrane - controlled who the. An additional electromagnet can hold the pliers conclusion, d. H. the movement of the actuators towards oneself Actual constriction of the top of the skin. Such can also be done with or before cutting especially if the latter is done without sheet guidance. The cutting tip or lance edge becomes a Wi the camp created.

However, the cutting tool has a curved guide the advantage that the same with high elasticity the upper skin areas near the test strips jerkily with be torn. The network network of The movement continues into the lower districts. But there the puncture tip has the opposite Directional tendency, what ver the impact of the capillaries strengthens.  

Description of the embodiments

Figs. 1 brings longitudinal sections through a puncturing device in a natural size, which serves as suction pump bellows encloses the suction cup (1) completely and concentric.

In the upper illustration, the left half corresponds to the stage of tensioning the strong compression spring ( 70 ) while reducing the bellows ( 46 ), while the left half shows the state after the compression spring has relaxed while expanding the bellows. A total of four pins (see FIG. 2 on the cross section) emanate from the base plate ( 16 ), each of which is surrounded by a tube that extends from the cover plate ( 15 ). The function of the trigger ring ( 344 ) is illustrated below.

Within the suction cup, the stage of skin suction is shown as it corresponds to the expansion of the bellows. The short test strip is inserted from below into the bracket of the receptacle ( 231 ) and is there in contact with the signal lines ( 345 ) to the measuring device for metabolic parameters (see cross-section Fig. 2) and with a signal line which contacts the tip or cannula ( right) further notifies see. Fig. 4 to the control center (184, see FIG. cross-section of Fig. 2). Further skin contact detectors (so-called "earth contacts") emerge as a pointed and blunt cone from the illustration in FIG. 4 and have been omitted here.

The axis of rotation ( 339 ) for the mounting socket is attached to the suction cup roof. The plunger magnet ( 144 ) acts with its armature against the receptacle and thus against the test strip and causes the puncture tip to move transversely. A tracking of the test tip after opening the vessel to widen the gap is possible when the energy supply from the battery ( 83 , see cross-section Fig. 2) is slowed down by withdrawing the stop plate ( 346 ) by means of the electromagnet ( 347 ) (see cross-section Fig. 4).

Suction regulation and re-ventilation of the suction bell takes place via the suction channel ( 32 ) through the seat valve ( 208 ) when the immersion magnet ( 145 ) is activated, the armature of which is then pulled to the left against a return spring on the plunger of the seat valve. The return spring can also be replaced by that for the magnet armature. The suction channel continues into a groove ( 348 , Fig. 59 bottom right) on the base plate below, which runs radially. The suction cup roof has a central opening in the bellows space, but can also be omitted as a whole and replaced by a gallows for fastening the axis of rotation.

The suction cup is surrounded in a circular manner by the housing ring ( 349 ) for the battery, measuring device and electronic control unit - for example for valve control. The sheet metal ring ( 350 ) is inserted over the sealing ring at the bottom in the suction bell housing; its lower edge is bent for a better sliding of the skin outwards and then upwards.

Of the two lower longitudinal sections, the upper one shows the stage during bellows expansion, the lower one that of compression. The trigger ring ( 344 ) is displaceable along the tongue ( 351 ), which is elastically connected to the base plate ( 16 ). A knob-like end bend slides the wedge projection ( 353 ) on top of the tab ( 352 ) on the cover plate during the manual lowering of the cover plate ( 15 ).

The cut of the detail on the right-hand side is radially offset from that on the left by 23 degrees (see cross-section Fig. 61). When the cover plate is lowered, a small nose on the upper inner edge of the release ring slides along the wedge profile ( 354 ) of the corresponding tab from the cover plate and causes the corresponding tongue to be bent outwards (see detail in the center right in Fig. 2). This is done simultaneously on the four tongues evenly distributed over the disk of the base plate and causes the knob-like end bends to leave the wedge projections on the tabs.

The lock against the expansion movement of the strong compression spring ( 70 ) is thus released, so the suction pump is actuated. After the skin has been raised in the control center, the solenoids ( 145 , 144 ) are activated accordingly.

Optical skin control can precede suction.

For this purpose, light rays from a light source ( 17 , Fig. 8) can be projected under the suction cup roof onto the center of the skin that has not yet been raised and can be projected by a measuring probe for signal processing in a measuring device in the ring housing ( 349 ), but also through the lens or opening ( 355 ) in the suction cup roof through the lens ( 356 ) for visual direct control of the skin. The bellows ( 46 ) is fastened to the base plate both in a sealed manner and on the cover plate.

FIG. 2 shows a cross section through a puncture device according to FIG. 1 in natural size at the top.

In the center is the suction cup ( 1 ) with the test strip in the center of the receptacle, flanked by the solenoids. The light source ( 17 ) and the lens ( 356 ) for the optical skin control are in the gap between the solenoids. Behind the poppet valve for suction cup ventilation are the suction channel and the radial channels ( 348 ) for air intake. The battery ( 83 ), measuring device (s) with display or window ( 357 ) are located on the base plate in the ring housing. (The reading of measured or input values could also be done from a display on the cover plate with a corresponding connecting cable to the measuring device.) One recognizes the signal lines ( 345 ) which conduct from the clamping springs ( 358 , Fig. 4) of the receiving shaft. Signal lines (dash-dotted) also connect the measuring device (s) and the electronic control center ( 184 ), which is accessible for programming after opening a flap (dashed with screw) in the base plate, and can also be programmed with touch switches, for example from the cover plate. The battery ( 83 ) can be recharged via the two sockets shown as circles and supplies the consumers via the lines ( 143 ).

The strong compression spring ( 70 ) lies between the ring housing and the bellows ( 46 ). The outer end is formed by the release ring ( 344 ), the slots of which enclose the tongues ( 351 ) of the base plate and, with the knob-like end bends, rest on the respective wedge projection ( 353 ) of the tabs ( 352 ) of the cover plate in the event of bellows compression. (The mounting problem of a rear cover to be welded on the release ring behind the respective tongues was not shown.) The tension spring ( 359 ) holds the same together between the four segments of the release ring.

The tube ( 343 ) extending from the cover plate, each of which partially includes a pin on the base plate, is also available in four.

According to the state of compression of the bellows, a longitudinal section through the device can be seen below. At the bottom right, the detail of a vertical view into the channel ( 348 ), which continues into the suction bell via the suction channel and the poppet valve.

Again, as in Fig. 1, the section plane is placed on the left through the wedge projection of the flap of the cover plate and the end bend of the tongue from the base plate, while the cut is shifted sectorally on the right side and shows the wedge profile ( 354 ), from which the nose of the trigger ring ( 344 ) that pushes the tongues outwards.

The seat valve ( 208 ) is shown above the longitudinal section as a detail in the closed state, as a result of which it is held in the bend of the suction channel ( 32 ) by the small compression spring. The opening is done by pulling the magnetic armature to the left. The base plate has a slight curvature of the skin (not shown), which facilitates the body positioning and the ventilation under spring tension against a base.

Fig. 3 shows in natural size a of the four segments of the trigger Inge (344). The slot which surrounds the tongue ( 351 ) is widened somewhat to the left and thus allows the trigger ring to be rotated slightly in the clockwise direction.

In the functional stage shown, by turning the trigger ring to the left, after locking the compression position as described above, the recess ( 360 ) for the passage of a projection of the tab was turned aside. The trigger ring is locked to the tab and cannot be lowered (unintentionally). This is only possible after turning the trigger ring clockwise.

The dashed tangent is intended to illustrate the straight attachment line of the tongue ( 351 ) at the bend to the base plate.

In a second representation of the tab, the connection of the tongue with the base plate is divided in two as a variant and in turn is performed in a straight line. Above the dashed cross-section of the base of the tongue, its double foot, which unites at the top (not shown), is folded into the image plane at a right angle. The tube ( 343 ) is drawn twice for the position information on the upper trigger ring segment.

The tension spring ( 349 ) can also be replaced, for example, by elastic chain links, as shown in detail below on the left. Two meandering chain links clamped together - for example made of plastic - are shown.)

To the right of it, that is to say in the middle, the lateral roll-up of a tongue ( 351 ) is shown in natural size, from which an elastic spring tongue is punched out and shaped, which has a resetting effect against the lowering of the trigger ring. The position and function is explained in vertical section detail on the right.

Fig. 4 shows a variant of the equipment of a suction cup for a puncture device on the left in cross section and on the right in longitudinal section on a scale of 2: 1. The lifting or immersion magnet ( 144 ) meets the stop plate ( 361 ) against an oblique metal tongue, which is proportional offers strong resistance.

This metal tongue is attached to the carriage ( 362 ), which can be retracted from the electro-immersion magnet ( 210 ) via the bridge rod ( 363 , top longitudinal section detail through the immersion magnet 210 ). The adjusting screw ( 364 ) slotted at the end regulates the steepness of the steel or metal tongue by bumping, depending on how far it is turned forwards or backwards. The electromagnet, as a double-acting one, can open the seat valve ( 365 ) in the bellows chamber in the opposite direction and thus the air pressure in the suction bell, which had been reduced by actuating the solenoid ( 145 ) through the seat valve ( 208 ) via the suction channel ( 32 ). The use of a magnet acting in one direction can also be considered, for example via a lever transmission with reversal of movement in the area of the bridge rod.

If the carriage ( 362 ) is retracted in its socket for re-cutting, that is, for repeating an unsuccessful transverse movement of the puncture tip, an increase in vacuum in the suction lock is also expedient.

The seat valve is also controlled under the influence of the feedback from the touch switches and the puncture device. The longitudinal section shows how a cone tip reaches the raised skin through a hole in the cover of the sheet metal ring ( 350 ). On the right side, a truncated cone comes into contact with the highest crest of the skin through a hole in the lid. If the latter contact is no longer reported, the opening of the seat valve ( 208 ) must be carried out sparingly as the control center is programmed. The enlargement of the detail under the puncture tip to a scale of 4: 1 (again with significant oversubscription) shows that as an example a cannula segment was attached to the test strip (using heat, for example). The upper blunt end of the cannula directs blood directly to the test field ( 104 ).

In this case, the sheet metal ring ( 350 ) is equipped with a test strip which has the axis of rotation ( 339 ) along a cover slot. The cutting edge of the cannula is aligned along this slot in the cutting direction. The clamping spring ( 358 ) is used to tap the signal lines, on the broad side of which there are corresponding insulation zones between the two outer contact conductors from the test field and the middle one in line connection with the cannula (in analogy to the usual procedure when using test strips, for example in glucometers).

The clamping spring is suspended in the suction cup roof on the side, the deflection to the right via the impact of the stop plate ( 361 ) on the test strip. Such sheet metal rings with an integrated puncture tip allow the puncture device to be used in various patients without the risk of infection because they are replaced after each use.

The compression spring ( 371 ), which is available in multiples and distributed over the circumference, holds the sheet metal ring downwards, with an upper edge offset preventing it from falling out downwards.

The magnets and the slide bush are braced in a ring shape with each other. Above the magnets there are at least two retaining tongues ( 366 ) which are inserted in a rotating manner between wedge-shaped sloping plate segment slots in the suction cup roof. The electrical contact making serve sliding contacts, the three of which were drawn on the cross section with the line end. A fragment of a claw is shown at the bottom left, which is useful when inserting and attaching the magnetic equipment to the suction cup.

Below is a sketch of the possibility of placing magnets (here one) inside the suction chamber outside the suction bell ( 1 ) to reduce the device height. The plunger screwed to the magnet armature can be withdrawn from the suction cup wall against a compression spring in the case of a double-acting electromagnet or can be unscrewed manually.

Fig. 5 shows in natural size a cross section through a puncture device, similar to FIG. 60 to 63, wherein the pocket but more common rectangular shape was chosen.

The suction cup with the magnet and puncture equipment is located centrally within the box-shaped bellows ( 46 ) which surrounds the compression spring ( 70 ). (The appropriate corner rounding was not completed in the drawing.)

The sliding bolt ( 367 ), which is arranged on each long side and slidable along the cover plate, is held in a locked spaced position by a compression spring between each pair, as can also be seen below from a longitudinal section along the lower pair of sliding bolts.

While the bellows is connected flatly to the cover plate, the sliding latch extends over the upper edge in a gallows-like manner, which is interrupted here and has two transverse slots ( 368 ) on each longitudinal side on the downward-extending tab ( 352 ) - here box-like frame - through which through the pair of cross bolts holds the sliding latch on the tab, as is clear to the right of the longitudinal section on a vertical cut detail along the section line AB of the cross section.

The column ( 370 ) extends upwards from the base plate ( 16 ), the edge of which projects beyond the tab, and ends in a transverse axis which runs in an oblique slot of the sliding bolt.

During the lowering of the cover plate for tensioning the spring ( 70 ) and for reducing the bellows, the sliding bolts are turned inwards as a result of the curve design in the oblique slot until they return to the starting position in the transverse end leg under the influence of the compression springs and the base plate and cover plate lock each other. (If the base plate lies on a base, the air can escape during bellows compression, since the base plate is slightly curved in the transverse direction.)

The string ( 372 ) connects each pair of slide bars on one long side to one another. The two strings are connected in the middle via the band ( 371 ), which was drawn in an interrupted manner. If the suction cup ( 1 ) is placed on the skin after a test strip with a puncture tip or cannula segment has been inserted into the receptacle in its easily removable cover from below, the user reaches under the band from below and draws the two pairs of slide latches closer together via the pulling action , whereby the cross axis of the column releases the suction pump release. The battery, control center and measuring device and display are accommodated on two containers connected to one another via lines (cf. cross section Fig. 2) on both sides of the suction bell, as can be seen on the cross section above; a data memory and a printer can also be present or connected via a socket. The valve and the magnets also function accordingly. Overlapping edge protrusion ( 374 ) prevents the functional parts from swerving to the side during bellows compression. Telescopic links can also be used, especially if the height of the device is to be reduced.

The control line ( 375 ) to the control unit is short-circuited by the passage of the transverse axis on the column ( 370 ) to sliding contacts of the side wall or tab of the cover plate if the transverse axis is at least metallically conductive on its surface. The signal can be used to trigger the immersion magnet ( 144 , Fig. 4). The transverse movement of the puncture tip can also be triggered by other switches, such as a length-adjustable pull switch depending on the bellows folding and thus on the vacuum build-up in the suction cup. The base and cover plate can be locked by means of a slide bolt ( 367 ) against false triggering, which can spring back inwards (mirroring the slot guide for the column axes), the strings ( 372 ) being guided over deflection rollers. Instead of the rectangular shape, the oval is appropriate.

Fig. 6 shows in a cross section on a scale of 1: 2 a device as in Fig. 5, but the suction bell is flanked by two square bellows with a respective compression spring. (On the right, the use of several round compression springs in series is indicated by circles within the bellows). The suction channel ( 32 ) must be created in pairs in the base plate. The measuring device and the battery lie between the bellows. The locking mechanism has been omitted here.

Fig. 7 shows in a longitudinal section sketchy on a scale of 1: 2 the combination of a puncture device with a suction bell located inside the bellows, an electromagnet and battery and supply device in the ring housing with a commercially available measuring device (such as a glucometer).

The measured values are fed via a conduction band to a kind of socket on the bellows roof and from there (possibly also directly without a socket) to the measuring device via a connection cable, which is pushed onto the roof of the bellows, for example in a rail. It can also transmit a transmitter ( 387 ) in the puncture device measuring signals, in particular those of metabolic data which are passed to it via the test field of a test strip, wirelessly to the receiver ( 388 ) in a measuring device, as is already the case today with the "Ulmer" Sugar clock "the glucose values obtained from a continuous measuring probe. Almost naturally, the battery and the control center can also be accommodated outside the bellows, for example in the vicinity of the measuring device or even as its components.

Fig. 8 shows above in a cross section above the point of point, including two longitudinal sections (section line AB) in different stages of function by a puncture device in a preferred design with a bellows in the scale 1.5: 1. On the top right, the schematic functional detail of a visual skin check.

The low suction bell ( 1 ) is located centrally in the bellows ( 46 ), the width of which is indicated by hatching. The strong compression spring ( 70 ) lies between the base plate ( 16 ) and the cover plate or the bellows cover ( 15 ). The test strip ( 103 ) with the puncture pin ( 6 ) attached to it is inserted between the clamping springs ( 358 , Fig. 11) in the receptacle ( 231 ), which extends with a tab through the internal slot ( 7 ) of the bridge arch ( 3 ). The bridge arch spans the suction bell and contains on the left a guide bush for the plunger ( 5 ) as a pressure sensor for the jerky lateral puncture tip movement and on the right a tab with fine thread for the set screw ( 9 ), which moves a wedge slide that moves up through the internal slot enough. A wedge shoulder on the slide of the adjusting screw ( 9 ) - slightly shifted from the median line by an angle on the bridge bracket (see cross section: the longitudinal section deviates by about 30 degrees clockwise from the center right), limits the movement of the mounting bush and with it the pestle. The plunger is held by the support wall segment ( 10 ), which also serves to support the compression spring ( 11 ), which is leaning against a bayonet pin (black). The tappet also bends down towards the arch of the bridge and is thus secured against axis rotation. When the bellows cover is lowered, the locking pin ( 12 ) attached to it via a surrounding sleeve segment penetrates into a bore of the tappet and is friction-retarded there by a zero ring for its return. The locking pin end is drawn out as a detail on a scale of 2: 1 on the left, the zero ring is a little over the top. The cross pin guide in a slot of the sleeve segment for the locking pin is designed so that when the bellows cover is raised again, the locking pin only leaves the bore in the tappet when the double-shaft wedge slide ( 13 ) is raised so far that it moves the tappet under the action of the compression spring ( 11 ) no longer hindered. (At the stage of the upper longitudinal section, the compression spring would be relaxed and the tappet moved to the right.) When the bellows cover is lowered, the locking pin withdraws upwards because it hits the compression spring but not the bore in the tappet. (The compression spring can be surrounded by a sleeve segment against an obstruction of the locking pin tip, as indicated by dashed lines.) Only after the plunger has been displaced to the left while its compression spring is tensioned can the tip of the locking pin penetrate into the plunger bore.

The lower pin of the recut button ( 21 , see FIG. 10) extends with its cross arm with wedge ( 22 , double contour) into the slotted pipe socket ( 23 ). When lowered, the wedge acts against the outer leg of the bayonet pin on the plunger ( 5 ) and displaces it to the left under tension by the compression spring ( 11 ). The position of the wedge ( 22 ) after turning the re-cut button by 180 degrees is shown in simple broken lines, as can be useful for other functions without re-cutting (cf. test strip change in FIG. 11).

On the right half of the picture a valve mechanism for the vacuum control is demonstrated. Here, too, the longitudinal section again follows the section line AB of the cross section. The pipe socket ( 14 ) extends down from the bellows cover, in which the valve pin ( 19 ) with sealing ring is common at the end and the pipe socket rests sealingly against a funnel-shaped constriction. The valve pin shows a hollow in the bottom, in which another pin with a locking device at the end of the valve pin extends telescopically down to the base plate. A cone pin mounted on the bellows cover (with a fine thread closes a nozzle which opens into the pipe socket. The outside air can flow in through this nozzle until the seal on the valve pin closes the pipe socket when the bellows cover is lifted to the maximum.

The wedge slider ( 24 ) attached to the bellows cover occurs when the former is lowered through a gap in the bridge arch and straightens the receptacle, which is tilted to the right, by displacement.

The support sleeve ( 27 ) and the support pin ( 28 ) slidable in it prevent a rotational displacement between the base plate and the bellows cover. They can exist more than once. The function and structure of the fork plunger ( 26 ) is described in more detail in FIG. 12. His fork end encompasses the test strip ( 103 ) and drives the wedge shape of the fork arms, the spreading lamellae reaching onto the skin, transversely to the cutting direction.

The schematic detail on the top left illustrates a complete skin check through the bellows cover after it has been lowered. The light from the light source ( 17 ) is collected via a lens and thrown at an angle onto the puncture site under the test strip. Reflected from there, the light is collected in the lens or the photosensor ( 18 ) and can be evaluated. The light source is supplied with power by means of dash-dotted lines from the (button) battery ( 83 ), the lowering of which within the bellows cover ( 15 ) closes the switch and thus the circuit.

FIG. 9 explains two variants of a skin spreading method in a plan view on a scale of 2: 1 on the test strips; in addition to the top view vertical section along the puncture pin ( 6 ), as they can be used in a device according to FIGS. 8-15 but also in others.

In the example on the left, edge strips are formed on both sides by cuts in the test strip from below, which may also be formed from only one of the three lamellae of the test strip, in order to ensure elasticity. Each of the edge strips or spreading lamellae ( 29 ) advantageously extends with its end bo gig over the curve of the end of the test strip inwards, in order to slightly displace the surface of the skin with a protruding, angularly downward-pointing extension near the puncture pin when the skin is raised. Handle-like bends of the expansion lamellae are pushed out by the penetrating arms of the fork plunger ( 26 ) because of their wedge shape with the Spreizla plates and the skin around the puncture pin. This was demonstrated in both functional states on the example on the left.

In the right variant, the strip-shaped spreading lamellae lie on the two or three lamellae of the test strip as separate parts and are glued to the top of the test strip base with the latter. They also show the handle-like bulges for a wrestling of the fork plunger, which is shown in the first stage of its penetration. Instead of the adhesive, rigid spreading lamellae can be connected by the tape ( 106 ) like a spine, ie articulated over the end of the test strip.

Figs. 10 brings in longitudinal sections along the line BC in the cross section of Figure 8 by a device as shown in Figure 8 on a scale of 1.5.:. 1 in two stages of operation on the left side of the mechanism of Nachschnittaste.

In the space between the longitudinal sections the detail of a wedge and right next to it a cross section through the lower part of the cross arm with wedge ( 22 ) in its at the functional stages, namely double-contoured switched on and single-contoured switched off. (The cross section follows the cutting line AB of the upper longitudinal section.)

To the right of it the wedge in longitudinal section. Under the wedge bevel the cut through the end of the bayonet pin on the plunger ( 5 , Fig. 8) (the arrows indicate directions of movement.)

The lower part of the recut button ( 25 ) is connected to the upper by a hinge joint and carries the cross arm with wedge ( 22 ) which, in the functional position, protrudes forward when lowered (upper longitudinal section) through the slot in the slotted pipe socket ( 21 ) and thus acts as a rotation lock for the post-cut key. The bellows cover ( 15 ) has a seal ( 30 ) towards the recut button. The post-cut button has a thread towards the upper end, along which the locking sleeve ( 31 ) is screwed and thus the depth of penetration of the post-cut button - and thus also the wedge lowering and the length of the tappet return can be determined. The thread length is set up so that the return of the plunger to the normal tension position forms the starting point for an additional return of the plunger ( 15 , Fig. 8). The setting can be made, for example, by means of the strip-shaped scale ( 32 , lower longitudinal section) on the bellows cover after projection of the lower sleeve edge with the recut button pressed. The possibility of a springback of the recut button by a compression spring between this and the lower part of the last or the bellows cover was not shown. The recut button can be rotated by 180 degrees before its cross arm with wedge penetrates the slotted pipe socket. The leaf spring arch ( 33 ) over the cross arm shows against conventional bends (see wedge detail between the longitudinal cuts) for the passage of the cross arm and holds back the lower part of the recut button. When the bellows cover is raised to generate suction, the post-cut button is erected from its tilted position. Some filler bodies ( 34 ) are still drawn with hatching in order to avoid dead space. The free space can be used for the installation of measuring devices with batteries but also for the installation of a storage container for test strips (not shown), which is accessible from the base plate or from the bellows cover via a flap or slide.

On the right side, the pressure button ( 35 ) springed back by means of a compression spring is shown, by lowering which the seat valve ( 365 ) in the bellows cover is opened. At the same time, the lowering of the wedge slide ( 24 ) causes the receptacle with the test strip to be re-erected. The puncture pen is thus erected when the skin retracts from the suction cup due to re-ventilation.

Another valve variation is demonstrated, for example, in FIG. 8. The valve pin ( 19 ) held by a telescopic pin in the base plate ( 16 ) in the pipe socket ( 14 ) protrudes into the annular groove ( 36 ). The end of the pipe socket is formed by its sealing ring ( 37 ). The valve pin moves along the latter and initially closes the pipe socket (lower longitudinal section). As the pipe socket is raised, however, the air can pass the seal via the annular groove. Only in the final phase of lifting the bellows cover (upper longitudinal section) does the sealing ring close again tightly around the valve pin. As a result, the negative pressure is initially fully effective on the skin when the bellows are raised. The speed of the bellows cover lift now depends on the degree of opening of the nozzle via the position of the conical pin ( 20 ), as well as the final pressure reached, which has a suction effect on the skin, so who can regulate it. The scale ( 38 ) opposite the pointer on the end plate of the conical pin ( 20 ) is used to check the nozzle opening.

Fig. 11 shows above a cross section through a Einrich device similar to that in Figs. 8 and 10 in a preferred oval base crack on a scale of 1.5: 1, the bellows around the compression spring ( 70 ) has been omitted. It is about the demonstration of the use of a test strip with several test fields. Below are some details, the lowest in longitudinal section. The test strip ( 103 ) contains several plates, each with a puncture pin ( 6 ) which is protected from use by means of a pushed-on cap ( 39 ). The plates are cut out of the test strip in the shape of a horseshoe and have an envelope fold at their base, via which they remain connected to the test strip. The detail at the bottom left (scale 2: 1) shows a longitudinal section through the lower sheet of the guide rail ( 40 ) with the open beak bent downward and an upper bend with side slits for the insertion of the test strip through the suction cup. The vertical section above can be seen below the over the circumference of the suction bell extended in both directions bridge arch ( 9 ), the retaining clip for the test strip ( 103 ) and the pair of skirting boards ( 41 ) on which the bridge arch is attached. The tappet ( 5 , cross-section at the top) moves the test strip in a jerk across the test strip. The upper left vertical section detail shows the slide ( 42 ) in its natural size, which is lowered from the broken bellows cover from the broken position into the solid line shown, two angle pins at the end of a V-shaped cross bridge in holes in the (increase there) ten) suction cup wall can be lowered. The paired contact clamp in connection with the two signal lines (dash-dotted) to the measuring device come to rest on the Ableitungskon contacts of the plate with the test field and forward the measurement signals.

After the test field has been used up, the test strip is transported further when the bellows cover is lowered when the wedge slide ( 44 ) penetrates, which plunges into an empty field at the right end of the test strip and later into the gap of the last used plate with the puncture tip. The necessary overstroke arises from the fact that the wedge of the wedge slide ( 44 ) is formed by a pivotable angle lever, the compression spring of which presses the angle lever against an impact. During the lowering of the wedge slide, a right kink of the vertical wedge slide rod releases the movement path of the test strip for the material bridge between the horseshoe-shaped cutouts. When the wedge slide is raised again, however, the angle lever is slightly compressed against its compression spring, since the test strip is then prevented from moving back to the left by the drawer-like slide ( 42 ). The last phase of shifting the test strip to the right can also be caused by the removal of an angle lever on the wedge slide from the slide ( 42 ) if a corresponding small wedge slide is attached to it in the direction of movement, which has a pushing effect on the material bridge.

The transport mechanism for the test strip can be blocked by rotating the recut button ( 25 , Fig. 10) by 180 degrees before lowering the bellows cover ( 15 ). As can be seen on the cross section above, the pull cable ( 45 ) acts via a deflection roller from the cross arm with wedge ( 22 ) on the slide ( 42 ) against its leaf spring (upper right longitudinal section detail of the wedge slide). The wedge slide ( 44 ) is tipped over an axis in its fastening tab under the bellows cover according to the direction of the arrow in the longitudinal section detail to the horizontal.

In a hinge of the long side of the base plate ( 16 ) of the folding bracket ( 47 ) is embedded, on which the cover ( 49 ) for the suction cup ( 49 ) by means of the paired screw ( 51 ) is BEFE Stigt. The lid is pivoted from the suction cup into the horizontal. To the right of the cover is a longitudinal section detail through the cover, with the interchangeable container ( 52 ) inside its central indentation, clamps enclose the cap of a still unused cannula and strip off when the cover is pivoted away. The compression spring ( 59 ) serves to reset the slide ( 42 ) in the phase of the raised bellows cover. (Some already stripped caps inside the container).

On the longitudinal section detail below, the position of a test strip ( 103 ) above the paired base is shown above the suction cup ( 1 ), the slider ( 42 ) lowered behind a plate with a puncture pen and the rail, which is opened downwards like a beak, to hold the portion of the test strip with used test fields.

The detail at the bottom right shows a vertical section through a variant of the receptacle ( 231 ) with a strong spring plate component, which both separates the bridge arch ( 3 ) from above and below and also holds the test strip with puncture pin in signal-conducting terminals. The dash-dotted signal lines lead into the measuring device ( 600 ).

On the cross-section above (because of the omitted bellows moved inwards) the position of the pair ( 53 ) with rod joint ( 54 ) on the base plate and the respective associated roller ( 55 ) on the bellows cover are shown, in addition, the cross band ( 57 ) between the ends of the outgoing from the hand poles.

Fig. 12 shows two longitudinal sections through a device as in Fig. 8, 10 and 11 in the scale 1.5: 1 along a section line perpendicular through the center of the cross section of Fig. 11. (The handrail level on the right is shifted forward.)

On the upper longitudinal section, the functional stage with specified bellows cover and in the rod joint ( 54 ) is erected ter holding rods ( 53 ). It can be seen that the Stan gene joint is attached to a column that is connected to the base plate ( 16 ) (manufacturing technology is part of it). The cross band ( 57 ) connects the ends of the cross bars of the support bars. The paired roller ( 55 ) - located on the right-hand side at the front, on the left-hand side at the rear - is lowered with a tab by the width of the holding rod below the edge level of the bellows cover ( 15 ). The handrail and roller remain in constant connection via the holding sleeve ( 58 ). A similar sliding connection with sleeve exists between the handrail and the rod joint.

The right-hand detail inside the handrails above shows how the handrail tilts inwards on the roller and can now be used as a mist to lower the bellows cover. This also applies to the left handrail, which is symmetrically arranged crosswise. The two details on the left between the handrails refer to the latching between the bellows cover and the base plate at the stage of the tensioned compression spring ( 70 ). In the longitudinal section below, this is shown for the left side, in that the spring hook ( 60 ) is engaged in an oblique notch of the column ( 61 ) attached to the base plate.

The details above show that when the support rod ( 53 ) is lowered - this time the left one is shown - its end wedge on the cross pin ( 63 , cf. vertical section detail below) forces the spring hook out of the notch. The strong compression spring is thereby activated and lifts the bellows.

With Fig. 12, the mechanism of the fork plunger ( 26 ) is explained in more detail, which drives apart the spreading lamellae on the test strip or on the test plate transversely to the cutting direction of the puncture tip (see FIG. 9). A compression spring is supported between a cross pin on the fork tappet and the gallows ( 64 ). The Fe is ben to protect the raised skin from a sleeve ben. At the end of the gallows there is a joint for the articulated lever ( 65 ). Its short arm engages behind a cross pin in connection with the fork lifter. The long end of the lever lies against the raised bellows cover. When the bellows cover is lowered, the spring of the fork tappet is tensioned by lowering the long arm of the articulated lever by returning it to the right. This functional state is secured by the fact that the end of the displace (symbolized as a thick line) articulated lever is inserted into the clamping bracket ( 66 ) (stage of the lower longitudinal section) From this it is by the cable ( 66 ). pulled out in the last lifting phase of the bellows cover and thus releases the movement of the fork tappet by the compression spring (stage of the upper longitudinal section). The dashed lever representation serves to demonstrate the effect of the cable tension.

Fig. 13 shows a longitudinal section above and a cross section below through a device according to Fig. 10-212, but was on the cross section of the bellows again wegge. The figure serves to illustrate a preferred solution for the test field change over a carrier disk for several plates with test fields.

On the longitudinal section above it is clear how the bellows cover ( 15 ) can be lifted up to change the carrier plate. For this purpose, the upper end of the bellows ( 46 ), which is provided with an inner annular bead which is closely fitted into a groove on the outer edge of the bellows cover, was pressed by the clamping band ( 68 ). The buckle or the lever lock of the clamping band is shown in a side view detail between the bellows and the bellows cover, on the left in a loose, wide state. In contrast, the buckle is shown on the right in a tense state, above with a ribbon in a top view.

(The mechanism is common to many sporting goods, such as skis bindings customary in the trade).

The bellows ( 46 ) has the variant that it continues under the base plate into an upwardly directed second fold ( 71 ) between the opening of the base plate ( 16 ) and suction bell and bridges a gap there. This results in a certain springback of the suction cup rim when it is pressed against the skin. At the adjusting screw ( 72 ), three of which are distributed over the circumference, pressure can be exerted on the crossbar inside the suction bell by means of a crossbar acting on the second fold. The contact pressure against the suction cup can thus be increased or the edge thereof can be further reduced with respect to the base plate.

On the cross-section in the middle you can see the outline of the suction cup ( 1 ) with plunger for the transverse movement of the test plate and the fork plunger of the opposite side, the carrier disc ( 69 ) with 16 test plates, which are arranged in a horseshoe shape to the edge base with only cut gaps drawn in places for the puncture pins, which are covered with a thin and tearable protective film or which have protective caps. Slits (black) can be seen near the center, into which the sliding wedge ( 70 ) penetrates and causes the sector disk to rotate in the clockwise direction by means of a compression spring when it is raised. In detail on the left under the carrier disc you can see the sliding wedge rotated by 90 degrees. Its guide sleeve is on the base plate and its compression spring is pressed down by a pin attached to the bellows cover. The rotary movement for a plate change is supplemented by the action of the wedge bevel on the slide ( 42 , detail on the right), the vertical section detail of which is seen from the right (see FIG. 11). Here too, the slide ( 42 ) has the task of pressing the plate underneath it down with the test field and puncture pen and fixing it in the vertical position. A fine toothing between the axle bearing and carrier disc leaves play for the jerky sector movement due to the tappet impact. (Slides and wedge slides for transport are to be kept narrower than the gap in the test plate punch.) A second carrier plate ( 79 ) can be symmetrically shifted with its own overlap with a sectoral overlap. The first transport disk must then have a correspondingly large empty window through which the test plates of the second carrier disk are lowered. The switching of the transport mechanism from the first to the second carrier disc is not discussed in more detail here: analogously to the wedge slide ( 44 , FIG. 11), each of the transport slides can alternatively be folded away from the functional position. The circuit can be easily coupled to the circular path completion of the carrier disks themselves. A special clamping spring ( 76 ) can prevent an attached carrier plate from falling out. However, the fine toothing already described between the axle bearing and the carrier disk opening will also suffice.

In the longitudinal section detail on the left, an alternative transport mechanism for sector rotation by means of the thrust-rotation link ( 73 ) is listed. The latter consists of a slidable on a square pin on the base plate with an extension which engages in an inner groove guide of the disk be encircling axle bearing for the carrier disk. The partial rotation is effected in the lowering phase of the disc, which receives its moment of motion via a spring, the opposite end of which is attached to the bellows cover. (The principle of such a groove guide can be found in FIG. 26 in published patent application EP 0 221 005 A2.) The transmission of rotation from the axle bearing to the carrier disk is indicated by a small angle on the latter; the task is better solved by a fine zackenpro fil (see cross section above) between the two parts. As a further alternative to a test field change, the position along the conveyor belt ( 75 ) when lined up in the Zig-zag is shown.

There is another example of the mounting of a guide pin ( 81 ), which extends from the bellows cover inside a Rohrman sleeve ( 82 ), which is fastened to the base plate (see. Top detail Fig. 15).

Since the plunger could not be effective in the instability due to a second fold ( 71 , longitudinal section above), a clamp-like rigid connection between the support wall segment ( 10 ) and the suction cup ( 1 ) must be created by means of the paired side flap ( 84 ). The pair of pipe sleeves ( 85 ) is attached to this side bracket and can be moved in height along the central pin from the base plate with the suction cup.

Fig. 14 shows a longitudinal sectional detail in the area of the suction bell ( 1 ), in which the pot sleeve ( 77 ) is inserted from below, the funnel-shaped inner opening of which is directed downwards. The cuff is the light source ( 17 ) in line connection to the battery ( 83 ) or stored and on the opposite side of the central opening of the photosensor in line connection with the measuring device ( 600 ). The light source and sensor are connected upstream of each optical fiber, which are aligned with each other via the central opening. After lowering the hand key ( 80 ) springing back and sealed against the bellows cover, the three pins (shown in dashed lines) have lowered the Topfman cuff during the suction phase, so that the skin control in the skin bladder bulging into the central opening of the pot cuff (dashed lines) is carried out can before the puncture pen has reached the skin. The further lifting of the bellows cover is only released by the user upon a signal from the control unit in the area of the measuring device.

It is more expedient to release the cup sleeve movement by actuating an electromagnet, as shown in detail at the bottom right in FIG. 15. The position of the carrier disc with the axle bearing ( 74 ) below the second carrier disc ( 79 ) is also shown (see FIG. 13). .

In order to use a device according to Fig. 8-14, the two support rods ( 53 , Fig. 11, 12) on the cross belt ( 57 , Fig. 11) or on the holding or bridge bar ( 86 , Fig. 15) slightly raised by train to bring the wedge end of the support rods out of the area of the spring hook ( 60 , Fig. 12).

Then, by hand closing, the two handrails are approached to each other, the bottom of the device with the suction bell is supported, for example, against the thigh or a table until the spring hook engages after lowering the bellows cover ( 15 , Fig. 12).

During the lowering movement, the compression spring for the plunger ( 5 ) is tensioned via the wedge slide ( 13 , Fig. 8) and the latter is locked by the locking pin ( 12 ); the receiving bushing ( 231 ) is also locked by the wedge slide ( 24 , Fig. 8) brought upright. The post-cut button ( 25 , Fig. 10) stands up. In this compressed state, the device can be transported in a pocket.

A test strip must then be removed from its packaging and, taking into account the electrical polarity (which is usually ensured by asymmetry, as with BAYER ELITE), inserted from below into the receptacle ( 231 , Fig. 8) of the suction cup. In the case of an elastically resilient suction bell as in FIG. 13, the contact pressure at the adjusting screws ( 72 ) could be regulated.

The device is then detected on the cross belt or on the bridge bar and the suction cup is then placed on the cleaned skin. By pressing the button of the battery ( 83 , Fig. 8), the skin texture at the puncture point can be checked visually via the lens or, in the case of reflex photometry, via the sensor ( 18 ). If the pot sleeve ( 77 , Fig. 14, 15) is upstream, the skin is only checked diaphanically after the handrails have been lowered and the spring hook ( 60 , Fig. 11) has been released. Upon confirmation signal, the pressure against the button ( 80 , Fig. 14) is then released or the electromagnet ( 91 , Fig. 15) is actuated via the control center. The fork plunger ( 26 , Fig. 12, 9) for widening the skin gap automatically functions. If the measuring device does not report the blood saturation of the test field in a few seconds, the post-cut button can be actuated after regulating the additional depth of cut on the locking sleeve ( 31 , FIG. 10). If the measuring device is not installed, a line connection to a commercially available measuring device ( 600 , Fig. 11) must be made. The test strip can also be pulled directly out of the receptacle and inserted into a measuring device if this is set up for the respective test strip.

When using a carrier plate with several test fields ( Fig. 14), the clamping band ( 68 , Fig. 13) must be loosened in preparation and the bellows cover removed or lifted up so far that a carrier plate can be pushed onto the axle bearing ( 74 ). The facility is then closed again. The recut button ( 25 , Fig. 10, 11) must now be turned if there is no empty window in the carrier disk. When the bellows cover is lowered, the sector disk usually rotates towards the next test plate with a puncture needle. The prerequisite for this is that the cover ( 49 , FIG. 11) has been closed over the suction bell in order to push the slide ( 42 ) out of the carrier window. When the bellows cover is lowered, the slide pressure from above prevails over the resetting compression spring ( 59 ) in the cover, so that when the cover is opened, the protective cap is stripped from the puncture pin, but the vertical position of the test field is secured until the cover closes after the puncture remains. (The cap sleeve for the compression spring ( 59 ) with chamfered end face to allow the carrier disc window to pass by was not shown.)

Fig. 15 shows above in longitudinal section the detail of a guide pin ( 81 ), which starts from the bellows cover, within the pipe sleeve ( 82 ), which is part of the base plate. A shift of functional parts is to be prevented. (A telescopic part is usually required to save height.)

Above the cross section through a device (again with the bellows omitted), the longitudinal section through the holding and bridging bar ( 86 ) is shown, which lies in the middle above the bellows cover and replaces the transverse band ( 57 ) of FIG. 11. The paired crossbar ( 87 ) on the paired support rod ( 53 ) is - when the support rods and the position of the paired roller ( 55 ) above the bellows cover - shortened and runs in an inner groove guide of the support or bridge bar ( 86 ) . Only one segment of the same can be seen on the right on the cross section. The crossbars cross in the bridge rail while the bridge rail is being lowered. At the stage of the upright grab bars, the cross bars enter into recesses in their groove guide and stabilize the bar lowering.

As can be seen on the longitudinal section under the cross section, the base plate ( 16 ) widened to the base is provided under the bellows with a tube bore into which the cartridge ( 4 ) is inserted. The tube bore is closed towards the front to the suction cup and towards the rear to the screw cap ( 88 ) by a sealing ring. The cartridge is used for the liquid jet injection. The small fin ( 89 ) ensures that the nozzle is aligned eccentrically downwards. The mandrel on the screw cap has also pierced the acid-filled bag ( 8 ) in longitudinal section below by screwing the screw cap inwards. The bicarbonate powder stored in the hollow piston ( 90 ) thus develops carbon dioxide gas. At the stage seconds later (on the cross section), the shear pin ( 91 , longitudinal section) was broken off by the pressure build-up and the liquid was injected under the skin through the nozzle in front of the hollow piston.

The strong compression spring ( 70 ) was replaced by four individual springs. The receptacle ( 231 ) with the clamping springs for the test strip can be seen on the longitudinal section. The signal lines to the measuring device ( 600 ) are drawn (dash-dotted). The plunger ( 5 ) is recorded as a contour in projection.

The longitudinal section detail at the bottom left essentially corresponds to the illustration in FIG. 8. Only the bayonet kink of the plunger is still on top (by 180 degrees) to reduce the friction between the arches of the mounting bush ( 231 ) and the bridge arch ( 3 ).

In detail at the bottom right, which modifies the functional operation of the de tails in FIG. 14, the elongated armature of the electromagnet ( 91 ) blocks the upward movement of the cup sleeve for the optical skin control under suction. After pulling back the anchor against a return spring, the cuff lifts itself into the dashed position and thus the skin into the puncture pen. Only a half-page representation is given on the left. Which is rotated by 90 degrees compared to the right representation.

Fig. 16 shows on a scale of 1.5: 1 in longitudinal section a device according to Fig. 8-15, in which the bellows is replaced by the cylinder ( 92 ), within which the piston ( 93 ) by means of the strong compression spring ( 70 ) can be raised. The compression stage is shown. The cylinder can be removed from the base plate ( 16 ) by loosening the screw cap ( 94 ) for cleaning. Seals are fitted between the piston, cylinder and base plate. The locking pin ( 12 ) lies within a telescopic sleeve which is attached to the piston roof.

FIG. 17 is left in a longitudinal section and right in two vertical sections schematically and in strong magni provement a test strip (103) as the carrier of the provided with chemical Meßsubstanzen measurement or test field (104) and parallel thereto, placed on this, a carrier strip ( 95 ) with puncture pin ( 6 ) and window ( 96 ) inside the receiving socket ( 231 ). On the left of the vertical section, the stage is shown in which the puncture pen has penetrated the (dash-dotted) skin. The stage on the right on the vertical section is shown by lifting the carrier strip with the puncture pen by moving the sliding wedge ( 97 ) through the window ( 96 ) so that only the gap on the rounding of the test strip leading to the test field is in Is close to the puncture site. The puncture pen is thus withdrawn from the skin and releases the blood.

FIG. 18 corresponds to the type of representation and the purpose of FIG. 17. Both the test plate with the test field ( 104 ) and the carrier strip ( 95 ) with the puncture needle pointing downwards were made at an angle from the carrier disk ( 69 ) against the ( dash-dotted skin bent down. The forked outer slide ( 98 ) acted on the carrier strip and the middle slide ( 42 ) on the test plate. After the jerky sideways movement through the plunger, the carrier plate is lifted by moving the wedge ( 99 ) to the left and thus the puncture pin out of the skin. The side arms of the wedge then act on the carrier strip and slide back into the carrier disc after the side slide ( 98 ) has been raised. Now only the test field is in skin contact. The puncture pin is expediently mounted on the carrier strip side which lies opposite the test field (that is, the carrier strip is rotated by 180 degrees about its longitudinal axis while the puncture pin is lowered into the carrier strip itself).

Figs. 19 are left in a plan view and right in longitudinal section on a scale of 4: 1 a test strip again containing two slats a stellar downwardly open capillary gap space along which the dotted line on the plan view of a closed edge.

(There can be an additional opening at the top for removing the ge collected blood should be provided).

Another example is on the left in the top view shown where between two (not shown here) External lamellae a capil branching like a meander lar duct system is cast that down to next to the puncture pen and an opening at the top points.

Fig. 20 shows approximately the natural size of a direction approximately according to Fig. 12. However, the strong compression spring for lifting the bellows cover is replaced by a hand lever system. Only the right side of the symmetrical double lever construction is shown in the longitudinal section below. On the column with the rod joint ( 54 ), the support rod ( 53 ) can be pulled out of the rotatable clamp or collar. The column is lifted within the pipe socket ( 105 ) fixed on the base plate ( 16 ) and fixed in the extended state by means of the locking screw ( 102 ). (It is advisable to use a spring-loaded locking pin.) As can be seen on the partial illustration of the right side of the device in the middle of the sheet, when the handrail is retracted, its T-piece comes to a stop at the end of the clamp ( 101 ). The latter is attached to the bellows cover. If the suction cup is placed on the skin after inserting the test strip into the receptacle, the bellows cover can be raised with both hands by lowering the long levers of the two holding rods to generate suction. For example, with the aid of a holding or bridging bar ( 86 , Fig. 15), one-hand operation can also be provided by arranging the lever rods obliquely inwards as for spring tensioning.

The right-hand longitudinal section detail shows, as in FIG. 13, a fold between the suction cup rim and base plate, which can be lowered by an angle on the adjusting screw ( 72 ). The set screw is guided through the base plate and sealed to the outside of the thread area by means of a pipe socket. Instead of the protruding head with knurl, a screw head recessed into the base plate is selected with a slot.

Addendum to Fig. 16: If the screw cap ( 94 ) between the cylinder wall and a ring placed on it to inhibit the piston movement, as outlined in the outline, there can be a separation between the base plate ( 16 ) and cylinder ( 92 ) and thus a seal omitted. The suction cup can also be injected into the piston so that the cylinder is the moving part.

Fig. 21 shows in natural size above in a longitudinal section a device with Einfaltenbalg, including two cross-sections and details of the functional equipment in the cross-sections associated longitudinal sections and below a special ren longitudinal section.

While on the upper longitudinal section the pot ( 109 ) is pushed up into the bellows to save height, the detail on the right shows the condition when the bellows begins to unfold. It can be seen that the receptacle ( 231 ) for the test strip is designed as a slide which moves in the slot ( FIG. 22, top center in cross section) by means of four pairs of rollers ( 108 , namely two on one side of the slide plate). This is done via the pendulum bracket ( 110 ), each with a cross pin in the carriage and in the head at the end of the plunger ( 5 ) by means of the compression spring ( 11 ), which repels on the column ( 111 ). The angular size of this movement is determined by the wedge bevel on the brake pad ( 113 ). The brake pad can be moved by corrugating the micrometer or set screw ( 9 ), the threaded bushing of which is mounted in the column ( 112 ).

The set screw is arranged obliquely so that the ge corrugated distance between pillar and brake pad through the suction bell can be reached behind its edge.

The set screw is shown below the top cross section as a longitudinal section detail; to the right of this is a vertical section through the brake pad ( 113 ).

The compression spring ( 11 ) is tensioned by the left displacement of the head of the plunger by displacing the cross pin by means of the wedge slide ( 24 , detail in longitudinal section on the right above the upper cross section). The latter is BEFE Stigt on the cover plate ( 15 ) and comes into operation during its lowering.

If the plunger is pushed all the way back to the left, the locking end of the rocker ( 115 ) enters the bore of the plunger head while being lifted by the leaf spring ( 116 ). It is triggered by a cable ( 117 ), which is self-winding due to elasticity, between the opposite end of the rocker and the cover plate.

The regrooving button ( 25 , longitudinal section in the middle on the left) is a round rod which is inserted through the sealing ring in the cover plate ( 15 ) and ends in a multiple wedge profile for the displacement of the cross pin ( 114 , cross section). In the functional state depicted, the recut button is lowered, so that the swivel joint ( 118 ) is under the cover plate. The rope drum ( 119 ) is height-adjustable on the re-cut button and is held by the hook ( 120 ) under the cover plate. The Kop pelungsstift ( 121 ) extends from the cable drum into a hole in the wedge piece and transmits the rotation of the cable via the roller ( 122 ) on the cover plate and the roller ( 123 ), which is fixed on the adjusting screw ( 9 ) against the tension spring ( 124 ) between pot ( 109 , in cross section only as a dash-dotted contour) and wedge piece. When the cover plate is lowered, the cable pull relaxes and the tension spring pulls the wedge piece away from the cross pin ( 114 ) while rotating the recut button. The same displacement effect with respect to the wedge piece of the recut button achieves a wedge bevel (not shown) on the underside of the wedge slide ( 24 ) along its longitudinal direction. The stepped wedge profile on the narrow side of the wedge piece can therefore only act on the cross pin of the plunger when the cover plate and thus the wedge slide ( 24 ) are raised.

Through the nozzle (at 20 , Fig. 10) in the cover plate, outside air can enter the socket ( 14 ) and between the longitudinal ribs of the valve pin ( 19 ) into the bellows space.

Associated with the lower cross-section, the parts are drawn apart in the longitudinal section at the bottom left. The nozzle is sealed to the cover plate under the nozzle attached to it, while the valve pin is attached to the base plate via the adjustable screw bolt ( 125 ). In the final stage of the cover plate lifting, the sealing ring on the upper end of the valve pin meets the sealing ring ( 37 ) on the lower end of the connecting piece and stops the inflow of air from the nozzle.

The longitudinal section below shows the variant of a paired execution of the strong compression spring ( 70 ) for the pump drive. They are around the telescopic guide to avoid a lateral shift between the base plate ( 16 ) and cover plate ( 15 ). As such, paired here the guide pin ( 81 ) fastened on the cover of the bushing ( 126 ) which slides within the tubular sleeve ( 82 ) which is attached to the cover plate. The sockets are lowered below the level of the base plate ( 16 ) so that the compression spring extends and the guide pin and pipe sleeve remain overlapping. By instructing the device to be placed on the body in such a way that the body curvature is cut vertically by the connecting line between the sockets, the splitting direction of the skin tissue can be taken into account during use.

The hollow channel ( 127 ) between an outer curve and a sharp-edged inner edge (which can also be set back somewhat upwards) can make it easier for the skin to slip in during the suction process.

The pair of locking hooks ( 128 ) is rotatable about a hinge joint on the cover plate ( 15 ) and engages under the edge of the base plate ( 16 ). The locking hook is pulled by the tension spring ( 129 ) towards the cover plate. (It is advisable to replace the tension spring with a torsion spring on the hinge joint.)

The dashed outline of the wedge piece on the recut button ( 24 ) corresponds to a first function stage displacing the cross pin ( 114 ) when the cover plate is raised.

Fig. 22 shows above a longitudinal section and below a cross-sectional detail through a device with a variation of the locking mechanism. The pair of locking hooks ( 128 ) springily engages from the cover plate under the edge of the base plate. The spreading hook ( 130 ) is attached with its hinge joint to an angle piece of the base plate ( 16 ). In its oval end bore the wire ring ( 131 ) is mounted (only shown in the segment). The lowering of the wire ring has the result that an edge on the hinge joint urges the latched end of the locking hook outwards.

The longitudinal section detail of the left locking mechanism in the middle of the sheet shows this stage of the beginning of the release and release of the action of the compression spring ( 70 ) for pump deployment. The bridge arch ( 3 ) with its slot for the slide (not shown) can be seen in the middle of the upper longitudinal section.

Fig. 23 shows top center in the scale 1: 1 and right of it and below it in the scale 2: 1 details of a receiving shaft or a receiving socket ( 231 ) with test strips ( 103 ).

The detail of a seat valve comes to the left in a longitudinal section ventilation after inclination of the puncture pin Slide in natural size for illustration.

In the middle left is a cross section through the inner part of a Device with omission of bellows and strong compression spring. At the center in the scale 2: 1 a regulating screw for one Cable and below two longitudinal and cross-sectional details by egg NEN mechanism for lateral spreading of the raised  Skin fold away from the test strip with the puncture tip.

The receiving socket ( 231 ) at the top in the middle is shown in cross section, including the associated spring clip around a test strip ( 103 ) with dashed signal lines in vertical section.

A fine insulating material bridge between the branches of the Spring clamp with the signal lines towards the measuring device demon electrical insulation of the two industries.

The top view of the test strip ( 103 ) to the right of the vertical section shows the special features to be assessed separately: the continuous central hole ( 131 ), the ax-like, wedge-shaped, downward-widening contour and angular projections on the lower edge for better entrainment of the skin during the lateral cutting movement through the puncture pen ( 6 ).

The longitudinal section through the dash-dotted skin tip shows the test strip with hole on a scale of 2: 1 and to the right of the latter the slot ( 133 ) as additional equipment.

The downward end of the test strip causes a central dent in the top of the skin and is pressed through the plates of the paired plunger ( 134 ) against the neck-like undercut of the test strip.

In the vertical section underneath it, apparently, on a 2: 1 scale Branches of a metal clamp, one branch of which is one Thorn has, which through the hole in the other branch reaches through the left figure. The one above it in longitudinal section Test strips shown would penetrate the hole fixed in height and held by the mandrel. The cutting plane corresponds to section line A-B.

In the right vertical section, which follows the section line CD, a wedge-shaped bevel within the spring branch caused the same to spread out during the insertion of the test strip ( 103 ). If the test strip is pushed all the way up into the spring clip of the receptacle, the strip snaps into the slot ( 133 ) of the test strip. To remove the test strip, turn it in the direction of the arrow from the vertical direction and pull it down out of the spring clip. The bridge arch ( 3 ) must leave space for this by making a slight incision in the slot.

The longitudinal section detail at the top left shows the conical pin ( 135 ) of a seat valve which can be pressed against a weak compression spring within a holding book under the cover plate ( 15 ) for re-ventilation of the pump bellows from its sealing seat below the cover plate. A string (dashed) attached to a plate at the end of the cone pin is shortened. The string is guided over a roller under the cover plate and another on the column ( 111 ) over the slide with the receiving bushing to a fixed point on the column ( 136 ). When the cone pin is lowered while the cover plate is raised, the side shortens and pushes the raised edge of the slide down. The latter, and with it the puncture pin, is erected again by returning to the starting and middle position.

On the cross-sectional detail in the middle left through the interior of a device, the reduction in dead space is demonstrated by the packing ( 34 ). There are also chambers for the battery ( 83 ) and the measuring device ( 600 ), the chambers of which are sealed towards the inside of the bellows and open outwards. (Your cap is not shown).

In the column ( 111 ) a transverse axis is screwed, about which the pivot lever ( 137 ) can be rotated, which, with its long leg, conveys the wedge segment ( 138 , longitudinal section details below) downwards. The cable attached to the short left arm of the swivel lever ends at the adjusting wheel ( 139 ), which is attached to a tab of the bridge arch and is shown on the right of the cross-sectional detail in the blade center in a 4: 1 scale in longitudinal section.

As can be seen from the enlargement, the axis of the adjusting wheel ( 132 ) rotates in a bushing in order to be able to lengthen and shorten the attached pull cable or a spring.

The adjusting wheel is to the side for the projection of the suction bell edge shifted that its edge from the finger through the Suction cup opening can be reached through.

Bottom left, two superimposed longitudinal section details with assigned cross-sectional details in the area above the suction cup in natural size denote the mechanism for pushing the skin by means of the wedge segment ( 138 ) at the end of the long leg of the pivot lever ( 137 ).

The upper illustration, in which the bellows and the compression spring to limit the essentials of the mechanism have been omitted, corresponds to the basic position with the cover plate lowered. From the adjusting wheel ( 139 ) runs a cable over the rollers ( 140 , 141 ) attached to it under the cover plate, between which the tension spring ( 142 ) is switched on at the end of the pivoting lever ( 137 ). The limiting cable ( 143 ) for stopping the pivoting lever movement between the latter and the base plate ( 16 ) is relaxed. Only the tip of the wedge segment ( 138 ) lies within the dent (see cross-section detail), which is pressed in by the test strip from above after suction. (For clarity, the skin contour of the lifted skin was drawn in the cross-sectional detail.

In the functional state of the illustration below, the slide with the receptacle for the test strip was moved to the right by the plunger ( 5 ) after the skin had been lifted into the tip of the puncture pen by suction in the initial phase of the cover plate lifting under bellows folding. With the extension spring ( 142 ) stretched, the short leg of the swivel lever was raised, as far as the limiting rope ( 143 ) permitted under tension. The axis of the swivel lever lies in the column ( 111 ). The tightness of the upper cable for the swivel lever can be set on the adjusting wheel ( 139 ), which is fixed to the bridge arch. On the cross-sectional detail on the right you can see that the wedge segment ( 138 ), which is crescent-shaped with the flat side against the lower end of the test strip, has been lowered and has pushed the inner contour of the skin dent from the test strip and thus also from the puncture pen. A spreading of the wound gap can thus be achieved. The pivoting lever movement only takes place in the last phase of the cover plate lifting.

As a variant, the setting wheel can also be on the right half of the Sledge with 8-roller guide arranged along the bridge arch be, so that in the final phase of the cover plate lifting The sled is lifted into the horizontal again (adjusting wheel knitted smiles). Between the two lower longitudinal ends tails, a tension spring arrangement is sketched on the left, at which is functional to reduce the length of two tension springs are connected in parallel.

Fig. 24 shows above in longitudinal section the stage of the right shifting of the carriage with inclination of the puncture pin with the axis of rotation approximately in the middle of the pin portion, which projects beyond the rounding of the test strip.

Below on a cross-section in natural size the presen- tation of two symmetrically arranged swivel levers ( 137 , 144 ), which the constriction of the top of the skin profile from the outside to the inside. For the swivel lever ( 144 ), the axis runs in the column ( 145 ). The adjusting wheel for the length of the cables for lifting the long legs of the swivel lever is screwed into a threaded bushing under the cover plate.

To the right of the cross-sectional detail, a longitudinal section through the adjusting wheel on a 4: 1 scale. The adjusting wheel here is a screw with a slot, which can be turned by means of a screwdriver against the resistance of a compression spring within the threaded bushing. Two variants were shown as functional connections: a fixed strap end ( 146 ) for fine adjustment with little distance differentiation and a clamping roller ( 147 ) rigidly connected to the adjusting wheel for a pull rope end for rough adjustment.

The two longitudinal section details below correspond to two functions stadiums. In the upper one is the band-like connection between the adjusting wheel (omitted) relaxed and folded on the cover plate.

In the lower longitudinal section detail, the band-like connection is tightened according to the end stage of the cover plate lifting and has raised the long leg of the swivel lever ( 137 ) after the slide with the test strip has been moved to the right.

The leaf spring at the end of the short leg slides over the beveled knob ( 148 ) on the plunger ( 134 ) and is now in front of the second locking knob (between the lower longitudinal cuts at the top in the longitudinal section and below in cross section as a detail on a 4: 1 scale) . The plunger is guided in a hole in the column ( 111 ). The right end of the plunger presses against the top of the skin. When the short arm of the swivel lever is raised again with the lowering of the cover plate, the elastic leaf spring is pushed over the steeper bevel of the knob ( 148 ) and separated from the tappet. The tappet is returned to the starting position by the tension spring ( 149 ) and the top of the skin, if it is still raised, to the left.

The mechanism is only one in the lower longitudinal section details shown on the assigned cross-section details on the right but the effect on the top of the skin (thick dash-dotted lines Line) on both sides. On the lower cross-section detail are  additionally drawn in three fine dash-dotted ellipses, which the deformation of the top of the skin by the one-sided one correspond to the narrowing. The skin has to cross the test strip length cut the tendency to diverge. The wound gap is thus pulled apart.

On the cross-sectional details it is shown that the plunger ( 134 ) can expediently also be fork-shaped and then encompasses the bridge arch ( 3 ).

Figs. 25 illustrates in schematic cross sections in the scale of 2: 1 above, a vacuum pump in two stages of operation is, which is driven by means of the electromagnet (150).

The magnet armature has the transverse axis ( 158 ), which is displaceable in the slot of the slide ( 151 ). The slide rotates around the fixed axis ( 152 ) on a column in the vicinity of the cylinder ( 155 ). The slide end is fastened to the axis ( 153 ) of the piston ( 154 ) by means of a bore. The piston can be moved sealed in the cylinder ( 155 ), in the stage shown above it is from the retracted position and is transferred to the stage in the figure below using the compression spring ( 159 ). The piston is thus pushed into the cylinder, the air in it escaping from the open flap valve ( 157 ) through the central piston bore through, since the check valve ( 156 ) in front of the suction channel ( 32 ) under the action of its compression spring on the valve ball is closed.

At the stage in the figure below, the electromagnet begins below Current influence (via the dash-dotted lines) its anchor pin to the left in the coil. This brings about a conclusion of the flutter valve when the check valve is opened behind the Suction channel.

The two lower figures show the pump in natural size within a housing, the space of the battery ( 83 ), measuring device ( 600 ) and control center ( 160 ) can be used as a vacuum storage space. This is the case in the upper illustration, in which the suction bell ( 21 ) is closed at the top by a roof. In this case, the check valve ( 156 ) is preceded by a line into the housing space and from this line leads via the seat valve ( 161 ) into the suction cup space. The seat valve is opened via the spring-loaded trigger pin next to the edge of the suction cup when raised by pressing on the skin, so that the suction in the suction cup becomes effective. (The mechanism has already been described in more detail in connection with the suction injection in 12974.) A 3-2-way valve, for example as a sliding valve, can mediate the connection between the suction pump and the vacuum storage space or the vacuum storage space and the suction bell (not shown) above the seat valve. The channel or hose connections are shown schematically with a dashed line.) Along a contact strip with lines to the control center ( 160 ), a dipstick can be moved through the bellows ( 161 ) and transmit measurement signals, depending on how strongly the bellows under suction within the Device housing contracts. Display for metabolic measurements and control switches for the control center were not shown, since they are already known from previous publications. Instead of the puncture pin, a lancet was drawn inside the receptacle ( 231 ), which is jerked laterally horizontally by the electromagnet ( 144 ). The electromagnet ( 163 ), via the swivel levers on the pair of plungers ( 134 ), which are connected like pliers via a common axis on the bridge arch, causes the elliptical deformation of the top of the skin (dash-dotted).

The niches for the immersion of the cover plate projections were not shown on the packing ( 34 , cross-sectional detail Fig. 23). Pressure against the curve at the edge of the suction cup outside the hollow channel ( 127 , Fig. 21) limits the area of the skin to be drawn in more widely. It should also be noted in relation to FIG. 21 that the arrangement of the locking hooks ( 128 ) can expediently also be a mirror image (to the X axis), so that their hinge joints are fastened to the base plate.

The same applies to the locking and spreading hooks in Fig. 22.

To Fig. 25 is to be noted that outputs depending on the signal level of the small bellows (162, or the membrane or skin tip level in the suction bell, which is registered on Erdschlußkontakte) for the low-pressure measurement, the control unit pump clock pulses to the electromagnets of the suction pump.

For the movement of the cross section of the skin bell by displacing it swivel lever can be used as an adjusting or Links also rods or tabs in particular as Serve telescopic links. Bowden cables can also be used. The appears to be an important characteristic of the invention Skin gap extension by puncture pen or lancet using unilateral displacement of the skin tip around the puncture agent around, so that the cross section of the skin from the circular shape gives way.

The features of the invention shown here are not intended only in of the compilations shown as examples, but also be protected in any other compositions as they do a lot are possible without deviating from the essence of the invention distant.

Claims (64)

1. Device for obtaining blood for medical examinations by means of a puncture tip which is inserted into the skin in a suction bell in connection with a negative pressure source and then jerkily moved by a pressure transducer transversely to the puncturing direction, characterized in that at least part of the suction bell is within one Suction pump is mounted, this partially serving as a boundary, the suction pump according to the principle of a cylinder-piston pump is effective by expanding a wall-limited sealing space, with a separate and extended air discharge duct is required at most for an additional vacuum control within the suction bell and the suction bell is preferably arranged centrally and fairly axially parallel to the suction pump axis, the diameter of which exceeds the height expansion. 2. Device according to claim 1, characterized, that the suction pump is formed by a bellows, preferably with precautions against confiscation and Deformation of the folds due to the external air pressure. 3. Device according to claim 1 and 2, characterized, that the bellows has only one fold, which by pulling apart against the air pressure is stabilized.   4. Device according to claim 1, characterized, that the suction pump actuation by means of at least one hand lever is done. 5. Device according to claim 1 and 4, characterized, that the suction pump actuation by means of at least one lever preferably in the direction of the suction cup and thus the place of application. 6. Device according to claim 1, characterized, that the suction pump actuation by means of the voltage at least one spring. 7. Device according to claim 1 and 6, characterized, that the spring tension for actuating the suction pump by means of at least one hand lever. 8. Device according to claim 1 and 7, characterized, that a hand lever for spring tension for the suction pump at least almost parallel in its position to the largest expansion of the conservation facility pocket movement on the side of the suction pump is assembled.   9. Device according to claim 1, characterized, that lever for tensioning the springs for the suction pump at its end slidable to its axis of rotation are and a locking device between the movable Uncouple parts of the suction pump. 10. Device according to claim 1 and 9, characterized, that the blocking device for the movement between the one moved by at least one tensioned spring Suction pump parts represent an elastic locking hook, by means of wedge guides on lowered handrails is pushed out of its notch. 11. The device according to claim 1, characterized, that the shaft of a hand button, which is used for actuation a function within the suction pump through the wall ge is passed through, has a joint, around wel ches it parallel to the largest extension of the suction pump can be tilted. 12. Device according to claim 1, characterized, that by means of the shaft of a hand key, which is for Betä a function within the suction pump by its Wall is passed sealed, such functional operations both by pushing and by means of ver Bindings are made across the shaft by rotating it can.   13. Device according to claim 1, characterized, that from the part of the suction pump moved away from the suction bell Pipe socket goes out, in which a slide is guided that in Connection with the pump part not moved away by the suction bell stands and with a seal between the pipe socket clearing and which consists in their moving part, which at least in the largest expansion phase of the suction pump is the inflow of outside air into the suction pump, which can preferably be regulated via a valve, stops through an opening in the pipe socket. 14. Device according to claim 1 and 13, characterized, that between the slide and the pipe socket surrounding it Glade expansion within that of the seal distance covered, so that the inflow of outside air both in an initial phase and in the final phase of Pump movement is stopped. 15. Device according to claim 1, characterized, that a plunger by means of the spring transversely to the movement of the suction pump Transverse movement of the puncture pin causes, from the moving Suction pump part from a locking member to a locking edge on the tappet when the suction pump chamber is reduced, which at its magnification from there again with a telescopic delay is withdrawn after one of the moving suction pump part in the Phase of the spring tension on the ram lowered wedge from the Contact zone with the plunger was lifted out.   16. Device according to claim 1, characterized, that the spring for a slider that has a fork end between the locking slats on a support for the Puncture pen penetrates via a lever when approaching of the moving pump part is tensioned and over a Locking device in this voltage with withdrawal of the Slider is held from the area of the carrier, via a train connection to the moving suction pump part only decoupled in its last expansion phase pelt is. 17. Device according to claim 1, characterized, that when using a bellows as a component the suction pump with its moving cover part removable is designed. 18. Device according to claim 1, characterized, that between the still part of the suction pump than Base plate and the suction cup wall a movable Connection fold is switched on. 19. Device according to claim 1 and 18, characterized, that the connecting fold between the suction cup and base plate by means of screws in connection with one of the folds The peak-covering angle is lowered towards the edge of the suction cup can be.   20. Device according to claim 1, characterized, that several carrier lamellae for the puncture pin and arranged blood collection rooms on a single strip are arranged and by punching out the outline up to a bending edge the latter can be bent at right angles. 21. Device according to claim 1 and 20, characterized, that several carriers for puncture pins and associated collection Spaces for blood are arranged like a wreath on a carrier disc. 22. Device according to claim 1, characterized, that several carriers for puncture pins and associated collection Spaces for blood are lined up in a row using a ribbon. 23. Device according to claim 1, characterized, that the puncture needle and the collection room for blood mounted on separate supports and in parallel be ordered to the carrier with the puncture point over the projection of the end of the carrier to be able to withdraw the collection room. 24. Device according to claim 1 and 23, characterized, that a sliding wedge in a window of the carrier one Puncture pin can penetrate and against it over the carrier of the blood collection room by one Can retreat distance far parallel to this.   25. Device according to claim 1, characterized, that a plunger is actuated from the moving part of the suction pump, which on the part carrying the puncture pin on a carrier for several puncture pins and collecting spaces for blood and each this part down around its bending edge turns. 26. Device according to claim 1 and 25, characterized, that it is in the moving part of the suction pump in the The tappet moved into the tappet is a slide that the bent carrier part with puncture pen or collecting space for Blood fixed in this position until it was affected by a ge spring-loaded plunger from the lid of the suction cup back into his Starting position is pushed back. 27. Device according to claim 1, characterized, that the carrier for multiple puncture tips and collection rooms for Blood one section each above the suction cup center of a sliding member of the moving suction bell part is moved, until another Puncture pen is placed approximately centrally to the suction cup. 28. Device according to claim 1, characterized, that two carrier disks for several puncture pins and  Collection rooms for blood over each other on the edges arranged overlapping over the suction cup are so that through a window of the lower pane by a carrier for a puncture tip and a collection space for blood of the upper carrier disk can be lowered into the suction cup. 29. Device according to claim 1, characterized, that on a support for fields with several puncture pins and blood collection rooms, the latter functional components separate slats and separate from each other around the joint articulated axis bent position in the extended can be brought back. 30. Device according to claim 1, characterized, that between two slats of the test strip larger closed capillary collecting space for Blood is trapped to the side at the edge. 31. Device according to claim 1, characterized, that over a set screw from the inner edge of the Suction cup made of an adjustable obstacle for the Tappet movement transverse to the puncture direction is brought. 32. Device according to claim 1, characterized, that around a suction cup for receiving a carrier one  Puncture tip around, which is partially used as a bellows Suction pump is surrounded, electrical functional components available are preferably battery and electronic control unit and optionally at least one measuring device. 33. Device according to claim 1, characterized, that between a puncture device consisting of a Suction cup with pressure sensor and one partially surrounding it Bellows as a suction pump and a measuring device a signal connection is established, preferably via the transmission of Wave impulses. 34. Device according to claim 1, characterized, that at least one electromagnet is inside or in the neighborhood a suction cup is arranged, which both as a pressure sensor for the sideways movement of the puncture tip as well as for the Regulation of the ventilation of the suction cup via a suction channel causes. 35. Device according to claim 1 and 34, characterized, that one of the electromagnets inside or in the vicinity of the Suction bell in addition to an existing valve connection to the Suction channel for ventilation to the outside and a connection Control to the vacuum space of the bellows. 36. Device according to claim 1, characterized in that an electromagnet is a stop obstacle to another transverse movement of the puncture tip influenced by a pressure sensor.   37. Device according to claim 1, characterized, that at least one electromagnet, but preferably several connected in a ring shape, inserted into a suction cup and there over sliding or pressure contacts with lines is at least releasably connected to the battery. 38. Device according to claim 1, characterized, that at least one electromagnet laterally next to or above one radio part of the suction bell within the vacuum chamber acts on the inside of the suction cup. 39. Device according to claim 1, characterized, that the bellows that partially surrounds the suction bell, has an essentially oval or elongated shape. 40. Device according to claim 1, characterized, that from the lid a hand button, which is preferably also the Re-ventilation of the negative pressure space serves the re-erection treatment of the puncture agent by acting on the holder the receptacle. 41. Device according to claim 1, characterized, that the puncture device additionally at least one lateral Has opening in the suction cup, in which an injector Nozzle can be screwed in sealed.   42. Device according to claim 1, characterized, that the re-erection of the puncture means by re approximation of the cover plate under the action of the same on a part in connection with the recording book for the Puncture is effected. 43. Device according to claim 1, characterized, that the receptacle for the puncture is part of a Circuit board is which in the slot of a bridge arch to the side can be moved, we to the curve of the board serve at least four pairs of rollers on four axes, some of them over and are partly arranged under the bridge arch. 44. Device according to claim 1, characterized, that the ram for the sideways movement or the board dosed by means of the inclined edge feed of a prism can be inhibited, which is moved by a screw, which are stored in a column with a threaded bush on the pump base and is mounted above the suction cup so that it is one Finger can be rotated through the suction cup. 45. Device according to claim 1, characterized, that for a lateral re-cut through the puncture agent a kind of wedge with stepped partial conic section without re-ventilation edge at the end of a button sealed to the cover plate onto a Edge is swung in across the plunger in steps, which ver have long wedge bevels.   46. Device according to claim 1 and 45, characterized, that between the recorder button and the screw for the Limitation of the pivoting movement of the puncture means Coupling means is switched on, preferably a rope connection, the relaxation of which by lowering the cover plate withdrawing the cone from the projection of the transverse edge to the plunger to displace it under spring tension. 47. Device according to claim 1, characterized, that the bellows as a suction pump with one end on a pot is attached, in the center of which is the suction cup and the under tension at least one spring for the bellows stretch into the bellows under the cover plate can be a at a relatively low minimum height to achieve relatively higher pump stroke. 48. Device according to claim 1, characterized, that telescopic links for stabilizing the position of the lid plate to base plate and the functional parts in one pump extended in the bulges of the base plate of the pump are, preferably also for embedding the compression springs for the pump drive. 49. Device according to claim 1, characterized, that at least two locking hooks between a joint on cover or base plate or its continuation are stored and the releasable bracketing of the two when the pump function serve other parts.   50. Device according to claim 1, characterized, that at least two spreading hooks on a hinge joint of Cover plate or base plate or extensions of the same attached are, preferably by shifting the height of the housing surrounding the wire bracket can be moved so that they each use a kind of claw a locking hook from the Displace the clutch seat. 51. Device according to claim 1, characterized, that the test plate or the test strip as a carrier of the Puncture means to the level of free emergence of the Puncture means wedge-shaped apart, preferred wise with jagged irregularities in the wide bottom edge. 52. Device according to claim 1, characterized, that the test plate or test strip is at least one Has hole in which a mandrel from the bracket can intervene here. 53. Device according to claim 1, characterized, that by the action of a sliding part, the cross section contour of the top of the skin into a shape deviating from the circular shape brought. 54. Device according to claim 1 and 53, characterized, that at least one lever with a wedge-shaped end  Point down next to the end of the test plate or the Test strip under the receptacle when lowering after the lateral cutting movement, the skin next to it pushes out the top. 55. Device according to claim 1 and 53, characterized, that at least one pestle lifted the top of the skin to the side pushes towards the punk that penetrated the skin agent. 56. Device according to claim 1 and 53, characterized, that at least one pivot lever via a connecting means is coupled with the movement of the cover plate so that a pushing effect on the plunger for the displacement of the skin in the final phase of lifting the lid, preferably wise with the interposition of a suspension. 57. Device according to claim 1 and 53, characterized, that for length adjustment one on a lever for the immediate or indirect displacement of the top of the skin a kind of adjusting wheel, which is on a column or on Bridge arch is attached so that it is from the suction cup is reachable by the finger. 58. Device according to claim 1 and 53, characterized, that a screw for the length adjustment of the  Link between at least one pivot lever for the direct or indirect displacement of the Dome under the cover plate with a screwdriver is achievable. 59. Device according to claim 1, characterized, that for the vacuum generation in the suction cup battery powered electric suction pump is used. 60. Device according to claim 1 and 59, characterized, that for generating negative pressure in the suction cup Piston cylinder pump as a suction pump by means of a cycle an electromagnet is actuated. 61. Device according to claim 1 and 59, characterized, that vacuum at times against the suction cup sealed space accumulated and through valve opening when the suction cup is placed on the skin in the same takes effect. 62. Device according to claims 1 and 59, characterized, that the strength of the negative pressure in the skin via feedback can be regulated with a measuring membrane via the control center. 63. Device according to claim 1 and 59, characterized, that an electromagnet on at least one plunger to the side  Displacement of the dome towards the skin lowered puncture is used. 64. Device according to claim 1, characterized, that a hollow gutter between a narrow suction cup rim with a sharp inner edge and a wider and rounded one There is an outer edge around the suction cup.