CN104220117B - Syringe - Google Patents

Abstract

Syringe (1) has housing (2), is configured with the receiving portion for the container (5) with injecting fluid wherein.Syringe (1) has operation button (8) for the amount that can extrude from container (5) setting injecting fluid.To this end, operation button (8) is rotatable.When rotating, operation button (8) is moved relative to housing (2) up towards on the direction in distally in the side of the longitudinal central axis line (6) of syringe (1).In order to extrude injecting fluid from container (5), operation button (8) is made to move up up towards the side of the nearside of syringe (1) in the side of longitudinal central axis line (6).When setting the amount extruded of injecting fluid, operation button (8) can adjust at least one injection position (100) and at least one latched position (101), in injection position (100), set the amount of the permission of injecting fluid, latched position (101) sets the unallowed amount of injecting fluid.In injection position (100), operation button (8) side proximally can move up on the direction of longitudinal central axis line (6).In order to avoid the unallowed amount of injection injection liquid, it is arranged in the movement on the direction on the direction of longitudinal central axis line (6) proximally of lock operation button (8) in latched position (101).

Description

Syringe

Technical field

The present invention relates to the syringe of the type of explanation in the preamble of claim 1.

Background technology

By the known a kind of syringe of document DE 10 2,007 026 083 A1, operation button is made to rotate in order to set amount of liquid to be injected wherein.By rotating operation button, the side operating the button distally towards syringe together with shot sleeve moves upward.Operation button has buckling and locking device, and it guarantees to adjust in the position that operation button only can structurally be subscribed.Setting of centre position can not realize due to the elastic wall of buckling and locking device.In order to extrude injecting fluid, operation button side proximally is made to move up.

Automatically and reliably jumping to latched position to operate button from centre position, kayser must be sufficiently tight, and latched position radially must adjacent obtain the nearest.But, the intensity effect operator of lock part has to use for torque, in order to rotating operation button and setting dosage.Spacing possible in the structure of latched position is the most given and only can match with applicable cases in restricted limit.

By the known a kind of syringe for giving medicine of document EP 1 326 664 B1.This syringe has knob, and turning knob sets injectable amount of liquid.Operation button is only rotatable until the dosage that can set of maximum.But, can realize setting and injecting less than maximum dosage.

Summary of the invention

It is an object of the invention to provide such syringe, the most only can extrude the injecting fluid of the amount of reservation from container and allow to be well matched with desired applicable cases.

This purpose is realized by the syringe of the feature with claim 1.

In set syringe, it is allowed to operation button is maintained at corresponding in the position of the unallowed amount of injecting fluid.Therefore need not such buckling and locking device of design operation button, it guarantees to operate button from that the position between two latched position turns to two latched position automatically.If operation button must rotate the biggest angle (such as 90 ° or 180 °) between two amounts allowed set, the most also obtain the centre position between the injection position of the permission of operation button.If the position corresponding to the amount of the permission of injecting fluid of operation button separates to obtain non-constant width, the most only can be it is difficult to ensure that buckling and locking device does not allow to operate the centre position of button.

In order to avoid the unallowed amount of injection injection liquid in syringe (its operation button can be adjusted in the latched position that the unallowed amount with injecting fluid is associated), it is arranged in latched position lock operation button towards the movement on the direction of the nearside of longitudinal central axis line.Therefore can cancel such buckling and locking device, it guarantees that operating button is merely retained in injection position and can not be adjusted in latched position.Can match with the demand of operator and be such as configured to the kayser that can strongly feel for operating the buckling and locking device of button, or be configured to the kayser that can seldom feel, its centre position also allowing for operating button.It is achieved in the highest handling comfort and can guarantee simultaneously, not having the unallowed amount of injecting fluid to extrude from container.

" direction of nearside " represents such injection direction, the direction i.e. extruded the most from container towards direction or the injecting fluid of the receiving portion for injection needle at this." direction in distally " represents contrary direction, i.e. away from the direction of injection needle.The end in the distally of syringe is the end back to injection needle.Utilize " nearside " represent syringe when injection towards thrusting the sidepiece at position, and utilize " distally " to represent back to the sidepiece thrusting position.

Advantageously, syringe has the first buckling and locking device, and it limits at least one injection position.This buckling and locking device is so designed that at this, i.e. also can set the latched position that the unallowed amount with injecting fluid is associated.Advantageously, the first buckling and locking device has at least one latch elements, and it acts on jointly with detent profile.Advantageously, during latch elements is entrapped in the kayser recess of detent profile in injection position.Latch elements offsets from detent profile in latched position.Be arranged to syringe and there is locking profile, its latch elements with skew jointly act on and in the latched position of operation button lock operation button relative to the movement on housing direction proximally.Thus can guarantee that operating side proximally in the injection position that button only can be the most predetermined moves up in a straightforward manner.

Advantageously, locking profile structure is at operation button.Thus obtain compact structure.Advantageously, within latch elements is arranged in operation button.Operation button can adjust between the primary importance and the second position of nearside in distally especially with respect to latch elements.In the primary importance of operation button, latch elements is arranged in the first axial section of operation button, and it allows the skew of latch elements.Advantageously, latch elements is arranged in the second axial section in the second position of operation button, the skew of its locking latch elements.

Advantageously, latch elements can be about longitudinal central axis line shift outward, i.e. away from longitudinal central axis line.Advantageously, operation button has the first internal diameter in the first section, and it is more than the second internal diameter in the second section.Thus can realize in a straightforward manner locking profile.Advantageously, operation button is towards springing (gefedert) on the direction of the primary importance in its distally.

Advantageously, syringe has shot sleeve, and it torsionally and with can axially move is connected with housing.Shot sleeve is connected with dosage mechanism by the first threaded joints, and dosage mechanism is supported to rotatable and the most irremovable relative to housing.Therefore, first threaded joints that rotates through of dosage mechanism causes moving axially of shot sleeve.Advantageously, syringe has the first attachment, and it sets up antitorque connection in the primary importance of operation button between operation button and dosage mechanism.Therefore, the rotation of operation button makes dosage mechanism rotate, and makes shot sleeve move in the axial direction from there through the first threaded joints.Advantageously, the antitorque drivening piece that connects through between operation button and dosage mechanism is set up, and takes part to and is torsionally connected with dosage mechanism and is axially fixed ground and is connected with shot sleeve rotationally.Therefore, if rotating operation button, drivening piece moves together with shot sleeve in the axial direction.

Advantageously, operation button is torsionally connected with shot sleeve by the second attachment in its second position.Advantageously, the latch elements of the first buckling and locking device is a part for the second attachment, and detent profile constructs at shot sleeve.The most simply constructed.If operation button be in the locked position, then latch elements locking operation button move axially and the second attachment can not close.

Advantageously, syringe has dosing piston, its torsionally with operation button and being connected with dosage mechanism by the second threaded joints.Second threaded joints that rotates through of dosage mechanism causes the motion of dosing piston, and it is used for extruding injecting fluid.As long as operation button is in the primary importance in distally and is torsionally connected with dosage mechanism and dosing piston, the relative motion by the second threaded joints can not be realized between dosing piston and dosage mechanism, and injecting fluid can not extrude from container.The most structurally guarantee only to be extruded by injecting fluid in the second position of operation button.But, if operation button is in injection position, i.e. it is in the position that the amount of the permission with injecting fluid is associated, the most at this moment can the second position of setting operation button.

If dosing piston is torsionally connected by set overlapping piece (Teleskopteil) with operation button, can realize the least physical dimension of syringe, wherein, set overlapping piece can be axially moveable relative in parts dosing piston and operation button.Set overlapping piece can axially move relative to dosing piston and the most immovably be maintained at operation button at, or can be the most irremovable and axially translatable relative to dosing piston be maintained at operation button at.Because set overlapping piece can be mobile, so dosing piston and operation button can be implemented shorterly (i.e. on the direction of the longitudinal central axis line of syringe) vertically relative in part dosing piston and operation button.Thus reduce the total length of syringe.

If dosing piston has guiding segments, and if set overlapping piece there are two and guide bridge parts, it is relatively abutting at the guide surface of guiding segments at the sidepiece put, then reach simply to construct.If operation button has two equally guides bridge part, it extends through at least one receiving portion of set overlapping piece, wherein, guide bridge part to abut between bridge part at the guiding segments of dosing piston guiding of set overlapping piece in circumferential direction in the case of complete pressing operation button, then obtain compact structure.Because the guiding bridge part of set overlapping piece and operation button adjoins in circumferential direction and puts, so obtaining the less external diameter of syringe.

Can it is desirable that, be also can to feel or audible for the user when extruding injecting fluid from container, it is achieved the extrusion of injecting fluid.Can arrange the second buckling and locking device for this, it works between dosage mechanism and housing.First buckling and locking device is only movable when setting the amount extruded of injecting fluid, and the second buckling and locking device is not only movable when setting the amount extruded of injecting fluid but also when extruding injecting fluid from container.Second buckling and locking device can be designed at this smooth very much, thus can improve the most a little due to the second buckling and locking device for extruding the power that applied in the injection process of liquid by operator.Due to two buckling and locking device activities when setting the amount extruded of injecting fluid, so can feeling very well for operator and/or forming latched position with hearing.

Accompanying drawing explanation

Embodiments of the invention are illustrated below by accompanying drawing.Wherein:

Fig. 1 shows the side view of syringe,

Fig. 2 shows the cross section along the line II-II in Fig. 1,

Fig. 3 shows the side view of the syringe at the Fig. 1 set after the amount extruded of injecting fluid,

Fig. 4 shows the cross section along the line IV-IV in Fig. 3,

Fig. 5 shows the side view of the operation button of syringe,

Fig. 6 shows the cross section along the line VI-VI in Fig. 5,

Fig. 7 shows the cross section along the line VII-VII in Fig. 5,

Fig. 8 shows the cross section along the line VIII-VIII in Fig. 6,

Fig. 9 shows the diagram of the perspectivity of the latch piece of syringe,

Figure 10 shows the view of latch piece on the direction of observation of the end of the nearside of syringe,

Figure 11 shows the side view of latch piece,

Figure 12 shows the cross section along the line XII-XII in Figure 11,

Figure 13 shows the side view of the shot sleeve of syringe,

Figure 14 shows the cross section along the line XIV-XIV in Figure 13,

Figure 15 shows the cross section along the line XV-XV in Figure 13,

Figure 16 shows the diagram of the perspectivity of the drivening piece of syringe,

Figure 17 shows the side view of the drivening piece of Figure 16,

Figure 18 shows the cross section along the line XVIII-XVIII in Figure 17,

Figure 19 shows the cross section along the line XIX-XIX in Figure 17,

Figure 20 shows the cross section along the line XX-XX in Figure 17,

Figure 21 shows the side view of the dosage mechanism of syringe,

Figure 22 shows the cross section along the line XXII-XXII in Figure 21,

Figure 23 shows the cross section along the line XXIII-XXIII in Figure 21,

Figure 24 shows the diagram of the perspectivity of the set overlapping piece of syringe,

Figure 25 shows the side view of set overlapping piece,

Figure 26 shows the side view on the direction of arrow XXVI in fig. 25,

Figure 27 shows the cross section along the line XXVII-XXVII in Figure 25,

Figure 28 shows the side view of dosing piston,

Figure 29 shows the cross section along the line XXIX-XXIX in Figure 28,

Figure 30 shows the cross section along the line XXX-XXX in Figure 28,

Figure 31 shows the side view of the housing component of syringe,

Figure 32 shows the side view of the housing component on the direction of the arrow XXXII in Figure 31,

Figure 33 shows the cross section along the line XXXIII-XXXIII in Figure 32,

Figure 34 shows the cross section along the line XXXIV-XXXIV in Figure 32,

Figure 35 shows the diagram of the amplification of section XXXV of Figure 33,

Figure 36 shows the cross section along the line XXXVI-XXXVI in Figure 33,

Figure 37 shows the diagram of the amplification of section XXXVII of Figure 33,

Figure 38 shows the cross section along the line XXXVIII-XXXVIII in Fig. 1 in the injection position of operation button,

Figure 39 shows the cross section along the line XXXVIII-XXXVIII in Fig. 1 in the latched position of operation button,

Figure 40 shows after setting the amount extruded of injecting fluid and at the side view by operation button press to the syringe after in the second position of its nearside,

Figure 41 shows the cross section along the line XLI-XLI in Figure 40,

Figure 42 shows the cross section along the line XXXVIII-XXXVIII in Fig. 1 in an embodiment of syringe,

Figure 43 shows the cross section of another embodiment passing through syringe along line XXXVIII-XXXVIII, and wherein, operation button is in injection position.

Detailed description of the invention

Fig. 1 shows syringe 1, and it has housing 2.Housing 2 include distally housing component 3 and be fixed on distally housing component nearside sidepiece at keeper 4.Keeper 4 can be fixedly secured at the housing component 3 in distally, such as connected by welding.But, keeper 4 also can be removably held at housing component 3, such as, be screwed at housing component, in order to makes it possible to realize replacing be arranged in container 5 in keeper 4, that show in fig. 2.Container 5 is containing injecting fluid.Keeper 4 forms the receiving portion for container 5.Keeper 4 has connecting element in the end of its nearside, can be fixed with injection needle in this place.In this embodiment, connecting element is standardized external screw thread 11, the injection needle with corresponding female thread of can screwing on thereon.Replace external screw thread 11, other connecting element also can be set in the end of the nearside of keeper 4.Connecting element matches with the injection needle of set type.Can lay seal closure 10 that be represented by dotted lines in FIG, that only partially show on housing 2, it surrounds keeper 4.Syringe 1 has longitudinal central axis line 6.Operation button 8 it is disposed with in the end in the distally of syringe 1.

As Fig. 1 shows, the housing component 3 in distally has form 7, and it is such as made up of transparent plastics.Form 7 can manufacture as single component or be made for one with the housing component 3 of two component injection forming methods Yu distally.May also be arranged to housing component 3 be made up of transparent plastics completely together with form 7, in addition in the region at form 7, it can be carried out hair side process, japanning or hide in other respects so that the only region of form 7 is transparent.

Fig. 2 show in more detail the structure of syringe 1.Being disposed with stopper 21 in the inside of container 5, the dosing piston 103 of syringe abuts at stopper 21.Dosing piston 103 has the piston rod 19 abutting in the piston disc 20 at stopper 21 and being connected rotationally with piston disc 20.Piston rod 19 is torsionally connected with the guide portion 17 operating button 8 by set overlapping piece 18.Demonstrate that operation button 8 is in the primary importance 95 in its distally in fig. 2.Being disposed with compression spring 13 in the inside of operation button 8, operation button 8 is loaded on the direction of its primary importance 95 by it.Compression spring 13 utilizes first end be supported at the side 105 of operation button 8 and utilize the second end to be supported at drivening piece 16.Drivening piece 16 is torsionally connected with operation button 8 by the first attachment 23 in the primary importance 95 shown in fig. 2 of operation button 8.At the periphery of the guide portion 17 that drivening piece 16 is arranged in operation button 8.Be extended with the dosage mechanism 15 of sleeve-shaped at the peripheral place of drivening piece 16, its be also known as graded tube and torsionally be connected with drivening piece 16 with can axially move.

Dosage mechanism 15 is surrounded by shot sleeve 14, and shot sleeve 14 also equally utilizes the end in its distally to reach in operation button 8 with drivening piece 16.Dosage mechanism 15 is connected by the first threaded joints 33 with shot sleeve 14.Dosage mechanism 15 rotatably and is the most immovably maintained at housing component 3 at support 32 in the end of its nearside.Shot sleeve 14 is removable (i.e. on the direction of longitudinal central axis line 6) vertically but is torsionally maintained in housing component 3.Being disposed with latch piece 12 in operation button 8, it is torsionally bearing in operation button 8 and jointly acts on shot sleeve 14 and form the first buckling and locking device 29 with shot sleeve 14.Work in the end of the nearside that the second buckling and locking device 30 is adjacent to dosage mechanism 15 between the periphery of housing component 3 and dosage mechanism 15.The cross section that buckling and locking device 29 and 30 shows the most in fig. 2 at this extends, thus the reference number being associated only instruction card locking device 29 and 30 is arranged in where, and do not display the details of out its structure.Latch piece 12 is a part for the second attachment 24, and the second attachment 24 is opened in the primary importance 95 of operation button 8.Second attachment 24 makes the operation button 8 being in its second position 96 (Figure 40) torsionally be connected with shot sleeve 14.

Fig. 2 demonstrates and extrudes after injecting fluid and can be from the syringe 1 before the amount that container 5 extrudes when next time injects set injecting fluid.The position of shot sleeve 14 is limited by the first backstop 26 being formed between shot sleeve 14 and housing component 3.In order to set the amount to be injected of injecting fluid, rotating operation button 8.Operation button 8 in its primary importance 95 torsionally with drivening piece 16 and dosage mechanism 15 and be connected with dosing piston 103.If operation button 8 rotates, then drivening piece 16 rotates together with dosage mechanism 15.First threaded joints 33 causes the axial relative motion between shot sleeve 14 and dosage mechanism 15.If operation button 8 is rotated up towards the side corresponding to the dosage set by raising, then shot sleeve 14 is mobile towards (i.e. on the direction of arrow 25) on the direction in distally at this.Due to the dosage mechanism 15 support 32 (it prevents the axially-movable of dosage mechanism 15) in housing component 3, shot sleeve 14 removes and drives at this drivening piece 16 and operation button 8 vertically from housing component 3.When setting the amount extruded of injecting fluid, not only the first buckling and locking device 29 and also the second buckling and locking device 30 is movable because not only operation button 8 rotates relative to shot sleeve 14, and dosage mechanism 15 rotates relative to housing component 3.

Fig. 3 and 4 shows the syringe 1 after the amount extruded setting injecting fluid.Here, set the maximum amount of the injecting fluid that can extrude.This position is limited by the second backstop 27, and it is similarly formed between shot sleeve 14 and housing component 3.

In order to extrude the amount set by injecting fluid, pressing operation button 8 on the direction of arrow 28 in the diagram.Therefore the first attachment 23 is opened, and the second attachment 24 closes.This also will be further illustrated below.Compression spring 13 is so designed that, i.e. before shot sleeve 14 moves in the axial direction, first makes operation button 8 move upward relative to shot sleeve 14 side proximally.In the case of the second attachment 24 Guan Bi, operation button 8 is torsionally connected with shot sleeve 14.Owing to shot sleeve 14 side the most proximally moves upward, dosage mechanism 15 rotates.Second threaded joints 34 is formed between dosage mechanism 15 and piston rod 19.Because piston rod 19 is torsionally connected, so piston rod 19 can not rotate relative to shot sleeve 14 with operation button 8 by set overlapping piece 18.Therefore, dosage mechanism 15 causes the motion on piston rod 19 direction proximally relative to the rotation of shot sleeve 14, and piston rod 19 makes stopper 21 move in container 5 and causes extrusion injecting fluid from container 5.Because dosage mechanism 15 rotates relative to housing component 3, so the second buckling and locking device 30 is movable equally in the case of extruding injecting fluid and also acoustically indicates the extrusion of injecting fluid for operator.Because the first attachment 23 is unclamped, so drivening piece 16 can rotate together with dosage mechanism 15 relative to operation button 8.

Illustrate the component of syringe 1 in detail below.Component is functional unit at this, for simplicity describes it in piece.But, in order to simplify the manufacture of part, it may be advantageous to manufacture the element comprising multiple single-piece.

Fig. 5 to 8 show in more detail the structure of operation button 8.As Fig. 5 to 7 shows, the guide portion 17 of operation button 8 is guided bridge part 36 to be formed by two, and it is upwardly oriented in the side of the longitudinal central axis line 6 of syringe 1.It is configured with guide surface 37 at the longitudinal side of face each other guiding bridge part.

Operation button 8 has the first section 38, and operation button 8 has internal diameter a wherein.At the first section 38, the direction first line of a couplet towards distally is connected to the second section 39, and its internal diameter b is less than the internal diameter a in the first section 38.Forming step portion between two sections 38 and 39, it forms locking profile 102 to be further illustrated.On the direction of nearside, the first section 38 is limited, as Fig. 8 also shows by the holding section 43 projected radially inward.Keep section 43 snap-on at the edge 49 shown in fig. 13 of shot sleeve 14 and therefore by shot sleeve 14 be fixed on the direction of longitudinal central axis line 6 at operation button 8.

Operation button 8 has from side 105 adapter 40 that side proximally projects upwards in therein, be disposed with external toothing portion 41 in its end.As illustrated in fig. 8, external toothing portion 41 includes tooth the most outwardly, and it is adjacent to arrange in the way of corresponding three teeth are one group, wherein, is correspondingly formed interval between the tooth of single group.But, external toothing portion 41 also can place extension at the whole outer of adapter 40.External toothing portion 41 is arranged in the first section 38.As Fig. 8 also shows, operation button 8 has the guiding groove 42 stretched in a longitudinal direction, and it extends through the first section 38 and the second section 39.It is provided with two guiding grooves 42 arranged in the present embodiment disposed opposing each otherly.Guiding groove 42 is for accommodating the guiding bridge part 44 of the latch piece 12 that figure 9 illustrates.Latch piece 12 has annulus 107.Two radially prominent guiding bridge parts 44 it are disposed with at its sidepiece relatively put.Guiding two latch arm 45 of bridge part 44 respective carrier, it is in circumferential direction towards at the sidepiece of the nearside extended in the both direction guide bridge part 44 and be arranged in annulus 107 with the least spacing relative to annulus 107.Free end in latch arm 45 is configured with the lock part 46 protruded inwardly from.Fig. 7 to 12 also show this situation.Latch arm 45 with lock part 46 forms latch elements.As Figure 10 shows, latch arm 45 and lock part 46 are overlapping with annulus 107 in view of the direction of longitudinal central axis line 6, therefore do not protrude past annulus 107.Lock part 46 acts on jointly with the structure shown in fig. 13 detent profile 47 at shot sleeve 14.Detent profile 47 is limited by the first edge 48 in the end in its distally, and limits by the second edge 49 snapped into after keeping section 43 in the end of its nearside.As Fig. 2 and Fig. 4 also shows, first edge 48 in distally reaches and is fixed at shot sleeve 14 on the direction of longitudinal central axis line 6 between the annulus 107 of latch piece 12 and latch arm 45 and therefore by latch piece 12.

As Figure 13 shows, shot sleeve 14 has convex shoulder 97, becomes big in this place on the external diameter of shot sleeve 14 direction proximally.As Fig. 2 shows, between end and the convex shoulder 97 of the nearside of operation button 8, form spacing c.On direction proximally during pressing operation button 8, convex shoulder 97 forms the backstop for operating button 8.Shot sleeve 14 has window portion 31, and mark arrow 54 residence of the dosage set by display is stretched in window portion.Shot sleeve 14 has the covering part 56 being arranged close to window portion 31.Covering part 56 is used for covering dosage mechanism, thus only be can be seen that the labelling being arranged in window portion 31 of dosage mechanism 15 by form 7.Covering part 56 extends up in the region of keeper 4 in the position shown in fig 1 and 2 of syringe 1.As Fig. 1 shows, being disposed with tongue-like part 9 at the housing component 3 in distally, it extends on keeper 4 and covers covering part 56.

As Figure 14 shows, shot sleeve 14 approximates has the kayser protuberance 53 protruded inwardly from the height of convex shoulder 97.It is provided with four the kayser protuberances 53 being evenly distributed around in the present embodiment.Kayser protuberance 53 card is locked at drivening piece 16, and card is locked at the groove 59 shown in Figure 16 and 17 of drivening piece 16 or rather, and forms the support 35 for drivening piece 16 shown in the diagram.Drivening piece 16 is the most irremovable but be rotatably supported at shot sleeve 14 by reaching the kayser protuberance 53 in groove 59.

As Figure 14 also shows, shot sleeve 14 has female thread passage (Innengewindegang) 55, its end being configured to be adjacent to the nearside of shot sleeve 14.Female thread passage 55 interrupts in the region of kayser protuberance 53, thus shot sleeve 14 can manufacture with injection moulding method.Female thread passage 55 forms the first threaded joints 33 with the external screw thread 62 of display in Figure 21 and 22 of dosage mechanism 15.

As Figure 14 and 15 display, shot sleeve 14 has cannelure 50 at it at the sidepiece in window portion 31.Cannelure 50 constructs in the region of the thickening part 89 of shot sleeve 14.The protuberance 90 of housing component 3 reaches (Figure 33 and 37) in cannelure 50.Protuberance 90 has the arris 91 of nearside, and it forms, with the end 52 of the nearside of cannelure 50, the second backstop 27 shown in the diagram.Additionally, protuberance 90 has the arris 92 in distally, it forms the first backstop 26 (Fig. 2) with the end 51 in the distally of cannelure 50.As Figure 36 shows, protuberance 90 is arranged in cannelure 88.Cannelure 88 is constructed so as to accommodate the thickening part 89 of shot sleeve 14.Owing to groove 50 and protuberance 90 are centrally disposed between shot sleeve 14 and housing component 3 in radial directions about longitudinal central axis line 6, so obtaining the least external diameter of whole assembly.

Figure 16 to 20 show in more detail drivening piece 16.Drivening piece 16 has internal messing portion 57 in the end in its distally, and it acts on (Fig. 8) jointly with the external toothing portion 41 at the adapter 40 of operation button 8.It is adjacent to internal messing portion 57 at the sidepiece of the nearside in internal messing portion 57, is disposed with recess 58.If operation is moved relative to drivening piece 16 on button 8 direction proximally, then the external toothing portion 41 of operation button 8 reaches the region of recess 58 from the region in the internal messing portion 57 of drivening piece 16, thus unclamps the antitorque connection between operation button 8 and drivening piece 16.Illustrates in further detail internal messing portion 57 and the design of recess 58 in figs. 18 and 19.

Drivening piece 16 has edge 106, and it is limited in the groove 59 at the sidepiece of nearside.As Fig. 2 shows, edge 106 limits the degree of depth that drivening piece 16 is inserted in dosage mechanism 15.Drivening piece 16 is connected at the section at edge 106 be configured to sleeve-shaped and have four cannelures 60 being evenly distributed at periphery at its periphery at it, and it also has trapezoidal cross section as Figure 20 shows.As Figure 22 and 23 display, dosage mechanism 15 has the longitudinal bridge part 68 projected radially inward accordingly.Longitudinal bridge part 68 reaches in cannelure 60 and therefore makes drivening piece 16 torsionally be connected with dosage mechanism 15.

Figure 21 to 23 show in more detail the design of dosage mechanism 15.Dosage mechanism 15 is configured to sleeve-shaped and has the coefficient external screw thread of female thread passage 55 62 with shot sleeve 14 at its periphery.Being printed on scale 61 in dosage mechanism 15, its value rises towards the end in distally from the end of the nearside of dosage mechanism 15.Show schematically show scale 61 in figure 21, wherein, only show even number.Odd number can illustrate advantageous by lines between numbers.Lines diagram in figure 21 does not show.In the present embodiment, the often circle of dosage mechanism 15 is provided with 20 setting positions.The dosage set by operation button 8 is the biggest, and shot sleeve 14 moves up the most remote relative to dosage mechanism 15 towards the side in distally.When mobile, the window portion 31 of shot sleeve 14 moves equally, thus corresponding to the numeral increase shown by the scale 61 of the amount set by injecting fluid.Covering part 56 covers the value not being arranged in window portion 31 of scale 61, thus avoids demonstrating several values of scale 61 in the form 7 of housing 2.

Dosage mechanism 15 has detent profile 63 in the end of its nearside, and it is a part (Fig. 2) for the second buckling and locking device 30.Additionally, dosage mechanism 15 has four radially prominent card latch hooks 64 in the end of its nearside, its be the part of support 32 and be stuck in housing component 3 the click-lock edge 85 shown in Figure 35 after.Thus dosage mechanism 15 is fixed at housing component 3 in the axial direction.Additionally, dosage mechanism 15 has the inside adapter 65 of column in the end of its nearside, it has female thread 66.Female thread 66 acts on and the second threaded joints 34 formed therewith jointly with the external screw thread 76 of display in Figure 28 of dosing piston 103.As Figure 22 also shows, dosage mechanism 15 has the card latch hook 67 protruded inwardly from, and it is for being axially fixed in Figure 24 the set overlapping piece 18 of display.To this end, card latch hook 67 is stuck in the groove 69 shown in fig. 24 of set overlapping piece 18.

Set overlapping piece 18 is show in more detail in Figure 24 is to 27.Set overlapping piece 18 has the thromboembolism 70 of nearside, and it has square opening 71.Set overlapping piece 18 has annulus 72 in the end in its distally.Being extended with two between thromboembolism 70 and annulus 72 and guide bridge part 73, the surface construction of its face each other is guide surface 74.At the sidepiece being radially outwardly directed guiding bridge part 73, the reinforcing bridge part 75 stretched in a longitudinal direction is installed accordingly.As Figure 27 shows, bridge part 73 is guided to be configured to oblique at its outer rim.Receiving portion 104 it is configured with in annulus 72.

Figure 28 to 30 show in more detail the design of dosing piston 103.Dosing piston 103 has guiding segments 77 at it back to the end in the distally of piston disc 20.As Figure 30 shows, guiding segments 77 has (the most foursquare) cross section of rectangle.Being configured with disposed opposing each other two the first guide surface 78 at guiding segments 77, the guide surface 37 guiding bridge part 36 of operation button 8 can abut at the first guide surface 78.Other two guide surfaces 79 disposed opposing each other abut at the guide surface 74 of set overlapping piece 18.Receiving portion 104 in set overlapping piece 18 is constructed so as to such an extent as to can be inserted through guiding segments 77 and the guiding bridge part 36 being arranged at guide surface 78 of operation button 8.In the assembly shown in fig. 2 of syringe 1 after injection, shot sleeve 14 is arranged in the position of its nearside.In this position, the guide portion 17 of operation button 8 extends through receiving portion 104.If setting maximum dosage, as Fig. 4 shows, then guide portion 17 has spacing relative to piston rod 19.Spacing is bridged by overlapping overlapping piece 18, and it not only with the guiding segments 77 of dosing piston 103 but also is torsionally connected with guide portion 17.Thus can guide portion 17 opposed formations at operation button 8 be obtained the shortest, thus the state shown in fig 1 and 2 obtains the least length of syringe 1 (the most after completing the injection).

Figure 31 to 37 show in more detail the design of housing component 3.As Figure 33 and 37 display, housing component 3 has wall 83, and it is transversely to the machine direction axis 6 and has opening 87.Opening 87 is limited by inner sleeve 86 that be molded in wall 83, that project upwards towards the side in distally.The adapter 65 of the nearside of dosage mechanism 15 is stretched in inner sleeve 86.Radially being disposed with sleeve segment 84 outside inner sleeve 86, the click-lock edge 85 that its carrying projects upwards towards the side in distally, the card latch hook 64 of dosage mechanism 15 is hooked at click-lock edge 85.

It is adjacent to wall 83 (at the sidepiece in the distally of wall 83) demonstrate in Figure 34 two latch arm 80 be molded at housing component 3.Latch arm 80 is maintained at housing component 3 by keeping bridge part 82 and has lock part 81 at its free end.Lock part 81 approximates in the detent profile 63 arranged disposed opposing each otherly and snap at dosage mechanism 15 in this embodiment.Lock part 81 forms the second buckling and locking device 30 together with detent profile 63.

Figure 38 and Figure 39 shows the cross section by operating button 8.In Figure 38, demonstrate that operation button 8 is in injection position 100, and be in the locked position in 101 in Figure 39.In injection position 100, set the dosage of the permission of injecting fluid, and do not allow the amount set in Figure 39 of injecting fluid.The amount of the permission of injecting fluid is the amount subscribed in design, the desired dosage of its medicine given corresponding to available syringe.The many by dosage of some amounts, such as single dose can be allowed at this.The unallowed amount of injecting fluid is such amount, that is, the amount that should not give, such as, because the effectiveness of medicine only confirms it is the injecting fluid for the amount allowed, or because patient should be avoided by and independently set dosage and should avoid giving the medicine of the not accurately amount of explanation.

As Figure 38 shows, the detent profile 47 at shot sleeve 14 has protrusion 93 and kayser recess 94.The lock part 46 of latch piece 12 is arranged in kayser recess 94 accordingly.Therefore lock part 46 swings radially inward.Latch arm 45 is not shown annulus 107 overlap relative in Figure 38.Figure 38 also demonstrates that the external toothing portion 41 of operation button 8 is arranged in the internal messing portion 57 of drivening piece 16.In Figure 38, external toothing portion 41 and internal messing portion 57 are arranged on identical height, but are arranged under cross section.Between drivening piece 16 and operation button 8, antitorque connection is set up by external toothing portion 41 and internal messing portion 57.

Operation button 8 can from the injection position 100 of display among Figure 38 towards the second position 96 of the nearside being pressed in Figure 40 and 41 display on direction proximally on the direction of the arrow 28 shown in the diagram in.Thus the latch piece 12 with lock part 46 reaches in Fig. 6 and Figure 41 in the second section 39 of display, and it has less diameter b than the section 38 of display in Figure 38.The latch piece 12 external diameter in the region of latch arm 45 is sufficiently small in the case of lock part 46 is arranged in kayser recess 94, thus operation button 8 side proximally can be made to move up and cause injection.Latch arm no longer can radially offset in the second position 96 of operation button 8, because the cylindrical outer wall retardation motion of the second section 39.Operation button 8 is thus made torsionally to be connected with shot sleeve by latch piece 12.The second attachment 24 formed by latch piece 12 closes.By time in operation button press to its second position 96, side proximally of the external toothing portion 41 at operation button 8 moves upward and reaches the region of recess 58 from the region in the internal messing portion 57 of drivening piece 16.Therefore the first attachment 2 is opened and drivening piece can rotate relative to operation button 8.

Figure 39 demonstrates that operation button 8 is in the locked position in 101.In this position, in the region of the protrusion 93 that lock part 46 is in the detent profile 47 of shot sleeve 14.Therefore latch arm 45 radially offsets.Internal diameter in the second section 39 shows with dotted line in Figure 39.As it can be seen, dotted line intersects with latch arm 45.Therefore the motion on operation button 8 direction proximally can not realize.The locking profile 102 shown in figure 6 abuts at latch arm 45 and therefore prevents from operating the movement on button 8 direction proximally.Thus can not realize causing injection or injecting fluid from the extrusion of container 5 in the latched position 101 of operation button 8.

As it can be seen, latch arm 45 is designed to the narrowest.Therefore the power inwardly applied in radial directions by latch arm 45 is the least.The power being applied to detent profile 47 by latch arm 45 is the least, in order to operation button 8 turns in injection position 100.Thus can in shown syringe 1 latched position 101 of setting operation button.Locking profile 102 prevents to extrude injecting fluid from container 5 in the latched position 101 of operation button 8.

Figure 42 and 43 shows the cross section corresponding to Figure 38 by embodiment.In Figure 42, detent profile 98 is arranged at shot sleeve 14, and it has kayser recess 94, is formed between its protrusion 108.In this embodiment, protrusion 108 extends through the circumferential angle of about 18 ° accordingly.The external diameter of shot sleeve 14 is constant at protrusion 108.In the region of protrusion 108, latch arm 45 can not inwardly springing.Equally, in this region power can not be applied in detent profile 98 in circumferential direction by latch arm 45.For the design of display in Figure 42 of detent profile 98, even if in the case of the most firmly design latch arm 45, still operation button 8 can be adjusted in multiple latched position 101.For the embodiment of display in Figure 42, total can realize ten latched position, and is provided with 20 positions of total in the embodiment according to Figure 38 to 41 at periphery.

In Figure 43, the embodiment of display shows detent profile 99, be the most only provided with two injection positions.The corresponding angle having 180 ° between injection position, the i.e. rotation of the half of operation button 8.In order to also reach latched position between injection position, adjoin accordingly and be disposed with six kayser recesses 94, be extended with protrusion 110 in-between.Protrusion 110 extends through different circumferential angles.But, may also be arranged to protrusion 110 and extend through identical circumferential angle.The arrangement of protrusion 110 and kayser recess 94 so selects, i.e. only in two positions of operation button 8 (i.e. in shown position and in the position of rotation 180 °), all of lock part 46 is arranged in kayser recess 94.In other all positions, at least one lock part 46 radially offsets from protrusion 110, so that operation button 8 side proximally is moved upwards up in Figure 40 in the second position 96 of display to realize.Additionally, kayser recess 94 is arranged so as to, i.e. when operating button 8 and rotating 18 ° every time, at least one lock part 46 is stuck in kayser recess 94, thus obtains 20 appreciable latched position.In Figure 43 in the injection position 100 of display, operation button 8 can be adjusted in the axial direction relative to drivening piece 16 and shot sleeve 14, that is in the second position 96 of the nearside being adjusted among Figure 40 display from the primary importance 95 in the distally shown in FIG.Section 43 is kept to abut in the position 96 of nearside at the convex shoulder 97 of shot sleeve 14.

The arrangement of kayser recess and protrusion can at random match with corresponding applicable cases.May also be arranged to not provide latched position and unique appreciable kayser to produce between dosage mechanism 15 and housing component 3 due to the second buckling and locking device 30 between injection position 100.

Claims (18)

1. a syringe, with: housing (2), it is configured with the receiving portion for the container (5) with injecting fluid wherein；nullOperation button (8)，Its rotatably for set injecting fluid the amount that can extrude from described container (5) and rotate time described syringe (1) longitudinal central axis line (6) side up towards the direction in the distally of described syringe (1) relative to described housing (2) move，Wherein，In order to extrude injecting fluid from described container (5)，Described operation button (8) moves up up towards the side of the nearside of described syringe (1) in the side of longitudinal central axis line (6)，It is characterized in that，Described operation button (8) can adjust at least one injection position (100) and at least one latched position (101) in the case of the amount extruded setting injecting fluid，The amount of the permission of injecting fluid is set in injection position (100)，And in latched position (101), set the unallowed amount of injecting fluid，Wherein，Described operation button (8) can in injection position (100) on the direction of longitudinal central axis line (6) side proximally move up，And wherein，In the latched position (101) of described operation button (8)，The movement on direction proximally on the direction of longitudinal central axis line (6) of described operation button (8) is locked.

Syringe the most according to claim 1, it is characterised in that described syringe (1) has the first buckling and locking device (29), it limits at least one injection position (100).

Syringe the most according to claim 2, it is characterized in that, described first buckling and locking device (29) has at least one latch elements, it acts on jointly with detent profile (47), wherein, described latch elements snaps in the kayser recess (94) of described detent profile (47) in injection position (100) and offsets from described detent profile (47) in latched position (101), wherein, described syringe (1) has locking profile (102), it acts on and locks in the latched position (101) of described operation button (8) described operation button (8) relative to the movement on described housing (2) direction proximally jointly with the described latch elements of skew.

Syringe the most according to claim 3, it is characterised in that described locking profile (102) constructs at described operation button (8) place.

5. according to the syringe described in claim 3 or 4, it is characterized in that, described operation button (8) can adjust between the primary importance (95) and the second position (96) of nearside in distally relative to described latch elements, wherein, described latch elements is arranged in axial first section (38) of described operation button (8) in the primary importance (95) of described operation button (8), it allows the skew of described latch elements, and wherein, described latch elements is arranged in axial the second section (39) in the second position (96), it locks the skew of described latch elements.

Syringe the most according to claim 5, it is characterized in that, described latch elements can be about longitudinal central axis line (6) shift outward, and described operation button (8) has the first internal diameter (a) more than the second internal diameter (b) in the second section (39) in the first section (38).

Syringe the most according to claim 5, it is characterised in that described operation button (8) is towards springing on the direction of the primary importance in its distally.

Syringe the most according to claim 5, it is characterized in that, described syringe (1) has shot sleeve (14), it torsionally and with can axially move is connected with described housing (2), wherein, described shot sleeve (14) is connected with dosage mechanism (15) by the first threaded joints (33), and wherein, described dosage mechanism (15) is supported to rotatable and the most irremovable relative to described housing (2).

Syringe the most according to claim 8, it is characterized in that, described syringe has the first attachment (23), and it sets up antitorque connection in the primary importance (95) of described operation button (8) between described operation button (8) and described dosage mechanism (15).

Syringe the most according to claim 9, it is characterized in that, operation button (8) and dosage mechanism (15) between the antitorque drivening piece (16) that connects through realize, its be torsionally connected with described dosage mechanism (15) and be axially fixed and be connected with described shot sleeve (14) rotationally.

11. according to Claim 8 to the syringe according to any one of 10, it is characterized in that, described operation button (8) is torsionally connected with described shot sleeve (14) by the second attachment (24) in its second position (96).

12. syringes according to claim 11, it is characterized in that, the latch elements of described first buckling and locking device (29) is a part for described second attachment (24), and the detent profile (47) of described first buckling and locking device (29) constructs at described shot sleeve (14) place.

13. according to Claim 8 to the syringe according to any one of 10, it is characterized in that, described syringe (1) has dosing piston (103), and it is torsionally connected with described operation button (8) and is connected with described dosage mechanism (15) by the second threaded joints (34).

14. syringes according to claim 13, it is characterized in that, described dosing piston (103) is torsionally connected by set overlapping piece (18) with described operation button (8), wherein, described set overlapping piece (18) can be axially moveable relative in parts dosing piston (103) and operation button (8).

15. syringes according to claim 14, it is characterized in that, described dosing piston (103) has guiding segments (77), wherein, described set overlapping piece (18) has two and guides bridge part (73), and it is abutting in guide surface (78) place of described guiding segments (77) relatively at sidepiece put.

16. syringes according to claim 15, it is characterized in that, described operation button (8) has two and guides bridge part (36), it extends through at least one receiving portion (104) of described set overlapping piece (18), wherein, the guiding bridge part (36) of described operation button (8) abuts in guiding segments (77) place of described dosing piston (103) in circumferential direction between the guiding bridge part (73) of described set overlapping piece (18) when complete pressing operation button (8).

17. according to Claim 8 to the syringe according to any one of 10, it is characterised in that the second buckling and locking device (30) works between described dosage mechanism (15) and described housing (2).

18. syringes according to claim 17, it is characterized in that, described second buckling and locking device (30) has at least one latch arm (80) being arranged in described housing (2) place, and it acts on jointly with the detent profile (63) at the periphery of described dosage mechanism (15).