CN102835961A - Three-spring portable painless blood sampling pen with disposable pen point - Google Patents
Three-spring portable painless blood sampling pen with disposable pen point Download PDFInfo
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- CN102835961A CN102835961A CN2012103639624A CN201210363962A CN102835961A CN 102835961 A CN102835961 A CN 102835961A CN 2012103639624 A CN2012103639624 A CN 2012103639624A CN 201210363962 A CN201210363962 A CN 201210363962A CN 102835961 A CN102835961 A CN 102835961A
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Abstract
The invention relates to a three-spring portable painless blood sampling pen with a disposable pen point. The three-spring portable painless blood sampling pen comprises a main pen and the disposable pen point, wherein the main pen comprises a pen cap, a trip rod, a rod entering pressure spring and a rod retreating pressure spring, a locking structure, an unlocking button and a drawing rod retreating structure. The three-spring portable painless blood sampling pen is characterized that the disposable pen point comprises a pen point jacket; a needle exposing hole is arranged at the front end of the pen joint jacket; an opening end is arranged at the rear end of the pen joint jacket; a blood sampling needle is installed in the pen point jacket and can linearly slide along a cavity of the pen pint jacket under an external force; a needle returning pressure spring is installed between the front end of a needle body and the inner wall at the front end of the pen point jacket; a limit structure preventing the blood sampling needle from slipping off is arranged at the rear end of the pen point jacket; the rear end of the pen point jacket is connected with the front end of the main pen cap in a detachable plug-in mounting way; and the blood sampling pen also comprises a needle head asepsis seal structure. Compared with the prior art, the blood sampling pen provided by the invention has the following characteristics that the operation and the use are convenient, the cost for one-time use is low, the cross infection and the environmental pollution can be avoided, and the speed for retreating the needle can be improved, thereby pain of patients is eliminated or relieved, and the packaging and the transport are convenient.
Description
Technical field
The invention belongs to the tip blood taking instrument of clinical medicine domain, be specially the painless blood collecting pen of disposable written three spring portables.
Background technology
The tip blood sampling of clinical blood chemical examination is a kind of blood-sampling method maximum in clinical use, also is a kind of not only simple but also difficult blood-sampling method.Simple reason is: as long as at the tip blood sampling site blood taking needle is thrust skin and withdraws from skin, reach hemorrhage purpose and accomplish the overall process that the collection blood sample can be accomplished blood sampling; Reason of difficulty is: how to design a kind of ending blood taking instrument; In the prerequisite that guarantees no cross infection and environmental pollution, really accomplish simple and practical, simple operation, should guarantee cheap manufacturing cost and use cost; Guarantee again when blood sampling; Accomplish inserting needle not bitterly, go out pin not bitterly with pin after different (inserting needle is crossed pain behind the pin that can produce different time deeply, length can reach about 24 hours), and to guarantee that competent blood sampling volume (avoids pushing repeatedly finger and cause the hemolytic generation of extruding property; Influence the accuracy of result of laboratory test), required for clinical assay.
At present, main flow tip blood taking instrument clinically is main with blood collecting pen and disposable safe hemostix.Blood collecting pen has that single uses, sharpest edges with low cost; Because of it only changes blood taking needle at every turn; Need not change the blood sampling cap for brush, but have the sterilization difficulty, very easily cause cross infection; Blood sampling back syringe needle can not be realized automatic protection, is prone to environmental pollution and cumbersome deficiency and the shortcoming of each installing/dismounting cap for brush.Forbidden using (only limit diabetes patient's usefulness of blood glucose of testing oneself, but the pinprick infection problems of individual patients can occur) in hospital at present.And the pluses and minuses of disposable safe hemostix and blood collecting pen are very good opposite, and it has thoroughly solved the cross infection problem, but too high because of disposable use cost, are difficult for being accepted by most hospitals and patient, cause numerous hospitals to be in the dilemma.Some hospital directly buys the special-purpose disposable blood taking needle of blood collecting pen now; Directly accomplish the blood sampling work of advance and retreat pin, even when taking a blood sample, accomplish blood sampling work with this way too to infant and students in middle and primary schools' generaI investigation with hand-held needle; So obviously increased by blood sampling people's pain; Some is because of keenly feeling obviously, is understood the finger of drawing back of instinct by the people that take a blood sample, if patient's withdraw of the needle that also is not able to do in time at this moment; The blood collection needles that triangular shape will occur scratches the finger phenomenon, gives by the blood sampling people and causes certain body and mind painful.
Therefore, numerous knowledgeable people and enterprise are arranged, want to remove shortcoming separately to the advantages separately of traditional blood collecting pen and disposable safe hemostix, realize a kind of brand-new novel blood collecting pen.And the situation of reality is, although numerous knowledgeable people or enterprise have paid a large amount of energy, manpower and financial resources for this reason; But, make the product or the patent design of design because of separately limitation reason (for example understand the industrial design that is ignorant of of medical science, that learns industrial design is ignorant of medical science on the contrary); The deficiency that existence in various degree is such or such, its design or product are difficult to accepted by market; Can not obtain most doctors and patients' satisfied approval, concrete simple example is following:
1, some existing designs; Complicated because of too in the design on the chief editor; Not only increased manufacturing cost and selling cost, also operation sequence and the action because of increasing newly causes medical personnel need change the original operating habit of being familiar with; And increased medical personnel's workload, thereby be difficult to by vast medical care colleague approval.
2, some existing designs though adopt disposable nib, have solved the problem of cross infection, because of the trip rod of blood collecting pen has only a spring; And the connection Fixed Design is not done at the two ends of this spring, causes having only the inserting needle function, does not but have withdraw of the needle function; Thereby cause blood taking needle can not realize the withdraw of the needle, and not only cause the blood sampling pain, can cause that also due to illness finger pain is obvious; The withdrawal (mainly being the child) of instinct occurs, cause the skin tears phenomenon, this is maximum design error.
3, some existing designs for simplified structure and saving cost, have adopted main flow disposable safe hemostix only to use the method for designing of a spring; Its two ends connection is fixing, though can accomplish the advance and retreat pin function when taking a blood sample, because of realizing the withdraw of the needle; Just must utilize the inserting needle inertia of trip rod, force to elongate 3-4mm (using) to the stage clip of freedom of entry state, realize the purpose of inserting needle as extension spring; And lean on the retraction naturally of extended stage clip to realize withdraw of the needle function, and for stage clip, its function is exactly that the kinetic energy that the compression back produces is discharged; When stage clip returned to free state (length) fully, it had accomplished the work mission of stage clip, as forcing to elongate 3-4mm this moment; Is very big through test to the kinetic energy loss that stage clip produces, and its result has obviously reduced inserting needle speed, is exactly to reduce the process of inserting needle speed because force extended process; Generally can influence the inserting needle speed about 30%; Also be the main reason that causes obvious pain when causing the tip blood sampling, consider that from the hommization angle this kind design is least desirable.
4, application number is: 200410064671.0, and name is called: the patent of invention of " needle tip retracts type disposable safe blood taking needle and primary emission type safety blood taking pen ".The stage clip that leans on the trip rod in the chief editor to connect during this blood collecting pen inserting needle compresses and discharges the bump of realizing trip rod; And the realization of withdraw of the needle function, the sliding friction between a pair of elastic pressuring plate that designs on the V inclined-plane that but leans on the inherent its underpart design of disposable written overcoat and the blood taking needle needle handle body is accomplished with being out of shape.This kind design is feasible on principle, but actual effect is undesirable through simulation test.The one, to compare with the steel stage clip because of the elastic characteristic of flexure strip, its effective modification amount is the poorest, receives the restriction of written overcoat intracavity diameter and length on this basis again, its elasticity modification amount can further reduce, and influences its withdraw of the needle effect and inserting needle resistance and strengthens; The 2nd, lean on elastic pressuring plate and the bibeveled slip of V-type to realize withdraw of the needle function; Must cause frictional resistance significantly to strengthen, make the obvious increase of its idle work power and weakened useful work, its result causes withdraw of the needle speed obviously slack-off exactly; Cause the overstand of syringe needle in skin; Cause heavier foreign body thorn Severe Pain and withdraw of the needle pain, this is the greatest drawback that this kind design is applied to blood sampling withdraw of the needle field, is not suitable for very much the human oriented design and the service of painless blood sampling.
5, some existing designs are connected disposable detachable nib with chief editor's installation, under the prerequisite of latch-up-free device, adopt slip plug-in type connected mode merely, are to lack due to the practical experience of this aspect.Because single be slidingly matched not only come off easily and also influence the blood sampling effect.Because when blood sampling; Because of chief editor's trip rod of rapid movement moment bump, under the influence of active force and counteracting force, be prone to cause the effective insertion depth of disposable nib and chief editor to change to blood taking needle backshank end; The phenomenon that skids off in various degree appears; Can have a strong impact on effective depth of needle of blood taking needle syringe needle, cause the deficiency of blood sampling volume, individual cases even syringe needle can occur and can't thrust skin and be positioned at the phenomenon that depletion of blood can adopt and take place.
6, application number is: 200920227728.2, and name is called: the patent of invention of " a kind of blood collecting pen " discloses a kind of blood collecting pen of avoiding cross infection.But because of disposable use pen head part structure more complicated, cause the manufacturing cost of its part and assembly cost higher, finally its integrated cost is near some disposable safe hemostix.Say that from nonrecurring charge expenditure angle it has lost the practical significance that novel blood collecting pen uses because in case mix special-purpose blood sampling chief editor again and be connected accordingly and unload program, not as good as direct with next convenient and swift of the high slightly disposable blood taking device of price.
In addition, because of the congenital design defect of disposable nib, cause the blood taking needle needle body bar in the written overcoat long, the length of significantly being longer than written overcoat brings very big difficulty can for like this packing of dispatching from the factory, long-distance transport.Because of laminating each other and receive under the inertia impact that jolts and brake of vehicle at many casees; No matter the blood taking needle needle body bar in the nib is vertical up and down stressed or lateral stressed; All can cause long needle body bar stressed excessive, cause fixed small and weak blood collection needles generation modification and damage on the needle body.In addition, this disposable nib may be free to slide in the inner chamber of written overcoat with the needle body of syringe needle after blood sampling is accomplished, and causes blood collection needles to expose, and is prone to cause and accidentally injures or environmental pollution.
In a word, because of the restriction of use character He its volumetric spaces of novel blood collecting pen and disposable nib, determined blood collecting pen must be highly simple with unusual practicality.Want to solve defective and the deficiency that present blood collecting pen exists; Except that the strong point that will draw prior art; Also must work hard in the details part, because of the design invention in this field, much more more what to embody is detailed design decision success or failure; So on detailed design, must confirm as the comprehensive Design thought of service in many ways.Be specially: prevent under the prerequisite of cross infection and environmental pollution in assurance, must accomplish earlier, make medical personnel Vietnamese side when operation just fast good more to medical personnel design; The 2nd, be patients design, not good bitterly more more during blood sampling; The 3rd, be enterprise design, structure height is simple, assembles quick and conveniently, finally makes comprehensive manufacturing cost low more good more; The 4th, for analytical quality designs, blood sampling more foot good more (because of in case insufficiency of blood occurs, the patient needs push repeatedly to make it hemorrhage; And cause hematoclasis; Produce haemolysis, can have a strong impact on the accuracy of result of laboratory test), only in this way; Just might really design the each side's demand of taking into account, obtain the also wholehearted certainly novel blood collecting pen of welcoming of each side.
Summary of the invention
The present invention for solve the technical problem that exists in the known technology provide a kind of operation rapid and convenient, use cost cheap, avoid cross infection and environmental pollution; Improve inserting needle and withdraw of the needle speed, keenly feel thereby eliminate or alleviate the patient, and blood sampling volume is sufficient; And be convenient to make, the painless blood collecting pen of disposable written three spring portables of assembling, packed and transported.
The technical scheme that the present invention takes for the technical problem that exists in the solution known technology is:
The painless blood collecting pen of disposable written three spring portables; Comprise chief editor and disposable nib; Said chief editor comprises the pen cap be made up of overcoat and interior cover, be slidingly mounted on trip rod in the pen cap inner chamber, be installed on the trip rod advance the bar stage clip and move back the bar stage clip, be located at locking structure between trip rod and the interior cover, unlock button on the coat be installed, the drawing formula that is connected with the trip rod rear end is moved back the bar structure; It is characterized in that: said disposable nib comprises written overcoat; The front end of nib overcoat is provided with needle outlet, and written overcoat rear end is an opening end, in the said written overcoat blood taking needle that is made up of needle body and syringe needle is installed; Under external force; Said blood taking needle can be along written overcoat inner chamber linear slide, between the front inner wall of the front end of needle body and written overcoat, the back stitching stage clip is installed, and the rear end of written overcoat is provided with the position limiting structure that prevents that blood taking needle from skidding off; Said written overcoat rear end is that detachable plug-in mounting is connected with the front end of chief editor's pen cap; Said blood collecting pen also comprises syringe needle sterile sealing structure.
The technical scheme that the present invention can also take is:
Cover is by cover in first minute with overlap in second minute and constitute in said; Cover cooperates with said overcoat plug-in mounting in said first minute; In said first minute the front end of cover with second minute in the rear end of cover through being threaded, the front end that overlaps in said second minute is connected with the detachable plug-in mounting in written overcoat rear end.
The position that puts in said second minute near front end is provided with an elastic pressuring plate at least, and the front end medial surface of elastic pressuring plate is provided with the self-locking tooth, and the lateral surface of elastic pressuring plate is provided with the manual unlocking tabletting; The position that said nib puts outward near the rear end is provided with the annular projection that matches with the self-locking tooth, and the end face of said annular projection cooperates for the right angle face with the medial surface of self-locking tooth.
The position that puts in said second minute near front end is provided with an elastic pressuring plate at least, and the front end medial surface of elastic pressuring plate is provided with the self-locking tooth; The position that said nib puts outward near the rear end is provided with the annular projection that matches with the self-locking tooth, and the two sides of said self-locking tooth are the inclined-plane, and the end face of said annular projection is that the inclined-plane cooperates with the medial surface of self-locking tooth.
Also be provided with on the said chief editor and move back the bar handle, the said bar handle that moves back is made up of handle body and handle bar, and said handle body is located at pen cap outside, and said handle bar passes be connected vertical with trip rod behind overcoat and the interior cover; Said overcoat with in put to be provided with to make and move back the slotted hole that the bar handle vertically moves along the pen cap.
Said position limiting structure is along written overcoat spacing preiection, said spacing preiection and written overcoat integrated injection molding that laterally cavity direction extends in it.
Said position limiting structure is an end cap, and said end cap plug-in mounting is fixed on the written overcoat opening end, and said end cap is provided with the access opening that trip rod is passed.
Said syringe needle sterile sealing structure is the two shell fragment self-locking sealing caps that are connected with the syringe needle one; Said pair of shell fragment self-locking sealing cap is the one injection structure, and hand holding handle part that it passes by the main part that contacts with syringe needle, from the needle outlet of written overcoat and two shell fragments that are located on the hand holding handle part two sides constitute; The front end face of said written overcoat is provided with the groove that matches with shell fragment, and the free end of two shell fragments inserts and forms self-locking in the groove.
Said syringe needle sterile sealing structure is an integral type spininess medicated cap seal box, and the sealing box is by box body, lid and be distributed on the intravital a plurality of pin medicated caps of box and constitute; Disposable nib of equal ability plug-in mounting on each pin medicated cap, each pin medicated cap partly constitutes by being sleeved on the interior pipe box part on the syringe needle and can being sleeved on the outer tube sleeve that puts outside the nib.
At least be provided with a micro-protrusions on the front end face of said written overcoat.
Advantage and good effect that the present invention has are:
1, break the mentality of designing of existing blood collecting pen one to two spring, this blood collecting pen adopts three unique spring formula designs, with three elastic stage clips of difference, accomplishes design function separately.The one, for the trip rod in the chief editor has designed the bar stage clip and moved back the bar stage clip, these two stage clips are realized the quick ejection of trip rod and (resetting) function that bounces back fast respectively.The advantage of two stage clips of design is: can utilize the different elasticity of two stage clips to optimize best inserting needle speed and best withdraw of the needle speed that trip rod clashes into the blood taking needle needle body in the disposable nib, this be realize blood taking needle not bitterly with the key of hypodynia.The 2nd, the blood taking needle leading section has designed the 3rd miniature stage clip, i.e. back stitching stage clip in disposable nib.Characteristics are: at first the withdraw of the needle power with blood taking needle thoroughly separates with chief editor's the bar power that moves back, and accomplishes withdraw of the needle function without chief editor's trip rod, and blood taking needle leans on the back stitching stage clip independently to accomplish withdraw of the needle function after realizing the blood sampling inserting needle fully.Its advantage is: one, need the blood taking needle needle rear end not carried out any connection and locking with chief editor's trip rod when taking a blood sample, thereby save the connection and the locking mechanism of more complicated; Two, on the basis of saving above-mentioned connection locking mechanism; Can blood taking needle needle body foot piece be designed to the short-tail bar or not have the foot piece pattern; Make all interior written overcoat inside of ensconcing of whole blood taking needle; Thereby thoroughly avoided being longer than written overcoat, cause extruding and the bump of product in packing, transportation and storage link, and damaging or being out of shape and the normal blood sampling of influence has appearred in the syringe needle that causes being fixed on the needle body front end because of the needle body foot piece; Three, the back stitching stage clip is arranged on the front end of blood taking needle needle body; Only in moment that the chief editor excites; The needle body afterbody causes the back stitching stage clip to be compressed under the high-speed impact of chief editor's trip rod effective travel, causes that straight-line displacement forward synchronously fast takes place blood taking needle; Syringe needle passes the needle outlet of written overcoat front end rapidly, accomplishes the inserting needle function of blood sampling.After chief editor's trip rod is accomplished the inserting needle function; The bar stage clip that moves back in the chief editor is started working; Trip rod is rebounded rapidly reset, in the trip rod retraction, the back stitching stage clip also gets into from compressive state synchronously and releases the ability stretched condition; And push back the original state before the pin to blood taking needle, accomplish the overall process of the blood sampling inserting needle withdraw of the needle.That is to say; The blood taking needle of nib in the overcoat has in the rear end of written overcoat that position limiting structure is spacing can not to be stretched out, and near the position of front end back stitching stage clip lifting under free stretched condition arranged at written overcoat; The syringe needle that causes blood taking needle; Except that ejecting in the moment of blood sampling, it is inner that it is positioned at written overcoat all the time, therefore avoided syringe needle to expose hurting sb.'s feelings and environment is polluted.
2, the present invention becomes the two-part structure with Analysis of Nested Design in the chief editor.Because of under high-frequency operating position, the position that the chief editor is prone to be damaged most is that chief editor's pen cap locks the position with being connected of written overcoat.This position can cause connection fixing bad because of the wearing and tearing transition occurring, thereby causes the chief editor to scrap too early.The present invention considers from the angle of value engineering, and interior cover is made two independent segmented structures, promptly by cover in first minute with overlap in second minute and constitute.Wherein second fen cover two ends overlapped and is connected with written overcoat respectively with in first minute.Cover (through minimum the use 3000 times of test) after using repeatedly in second minute; In case occur to damage or when connecting the not good phenomenon of locking; Can change a cover in be equipped with simultaneously with the chief editor subsequent use second minute immediately; And other parts that make the chief editor continue life-time service, thereby can obviously reduce because of the chief editor scraps too early, and the waste that causes.The cost that cause was overlapped in second minute is less than 1/10 of chief editor's cost, and obviously this kind design is scientific and reasonable.
3, break through the shortcoming and deficiency that existing blood collecting pen must bimanualness cause bothersome trouble, lock onto the loading and unloading of disposable nib, all can accomplish one-handed performance from retreating of chief editor's trip rod, and simple and fast.Thereby, greatly facilitate operation of medical workers and alleviated medical personnel's labor intensity, and shortened blood sampling time.As long as the front port of chief editor's pen cap is aligned basically the rear port of written overcoat; Both are under the guiding of guiding surface; Can insert fast puts in place and accomplish appropriateness synchronously locks (need not to adopt traditional blood collecting pen nib to be screwed on the loaded down with trivial details action that screws off again), gets into the blood sampling state.After the blood sampling, still utilize one hand to hold pen and can exhausted disposable nib be unloaded rapidly, and get into the program of next time taking a blood sample.The concrete grammar of removing replaceable nib is: utilize thumb and forefinger folder to hold a pen and pull out to extrapolation, its excess-three refers to add the centre of the palm and holds the chief editor, can unload nib smoothly.
4, cheap.Because of disposable written assembly is few, every very simple again, can realize the production in enormous quantities of one-mold multiple-member fully, and assembling also can be accomplished simple and fast.Concrete; Earlier the back stitching stage clip is put into written overcoat from the opening end of written overcoat; And then the opening end of whole blood taking needle from written overcoat all be inserted in the written overcoat, because the restriction of opening end position limiting structure is arranged, after blood taking needle is inserted into written overcoat inner chamber; Can't in written overcoat, skid off, completion is promptly accused in the assembling of disposable nib.Because the manufacturing cost and the disposable single use cost of disposable nib reduce significantly, thereby the integrated cost of disposable nib significantly is lower than the disposable safe hemostix, both differ 2-6 doubly about.
5, have the painless characteristics of blood sampling.Since should be novel blood collecting pen adopt unique three spring formulas design, can when three springs are accomplished separately function of use, realize best optimization design.Guaranteeing the fastest inserting needle speed and withdraw of the needle speed, realizing advancing and retreat pin not bitterly or under the prerequisite of hypodynia, shortening because of the inertia time of staying of the excessive needle point that causes of trip rod inertia in skin, and then eliminated the foreign body zest pain of needle point in tissue.In addition, because of this novel blood collecting pen can be realized the accurate control of depth of needle, under the prerequisite that guarantees enough blood sampling volumes; Can eliminate the pinprick pain after the blood sampling fully, because of no matter from the consideration of anatomical physiology of man's angle, or on the practical experience; During blood sampling, in case inserting needle dark excessively (this point specially refers to human body tip position, particularly the finger abdomen position of blood sampling); Must cause behind the pin pinprick pain taking place, its pain time is the longest sustainable about 24 hours.In addition; Because of disposable written front end face is designed with miniature small embossment; This miniature small embossment both can play disposable nib when preventing to take a blood sample and the sliding problem that refers to the Pericarpium Arecae skin, again can be because of this miniature small embossment stimulate the gentleness that skin produces, and the nerve conduction principle of utilizing this gentleness to stimulate to produce the danger spot refractory stage and the relative refractory period that produce; Realize the painless and hypodynia effect of inserting needle, thereby realized the actual purpose of dual fail-safe for the design of painless blood collecting pen.
6, have anti-stab, anti-cross infection and environment-friendly function.Because of the syringe needle of this novel blood collecting pen except that the moment of blood sampling ejects, ensconce in the written overcoat in all the time, thereby have and prevent stabbing function, also help environmental conservation.In addition, this disposable nib is only used once and is cancelled at once, thereby has thoroughly solved the cross infection problem when taking a blood sample.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the exploded view of Fig. 1;
Fig. 3 is chief editor's a structural representation;
Fig. 4 is the A-A cutaway view of Fig. 3;
Fig. 5 is the B-B cutaway view of Fig. 4;
Fig. 6 is the connected mode 1 of chief editor's pen cap and written overcoat;
Fig. 7 is the partial enlarged drawing of Fig. 6;
Fig. 8 is the axonometric chart of Fig. 6;
Fig. 9 is the exploded view of Fig. 8;
Figure 10 is the connected mode 2 of chief editor's pen cap and written overcoat;
Figure 11 is the partial enlarged drawing of Figure 10;
Figure 12 is the axonometric chart of Figure 10;
Figure 13 is the exploded view of Figure 12;
Figure 14 is the package assembly 1 of disposable nib;
Figure 15 is the exploded view of Figure 14;
Figure 16 is the package assembly 2 of disposable nib;
Figure 17 is the exploded view of Figure 16;
Figure 18 is the package assembly 3 of disposable nib;
Figure 19 is the exploded view of Figure 18;
Figure 20 is a sterile sealing structure embodiment 1;
Figure 21 is the exploded view of Figure 20;
Figure 22 is a sterile sealing structure embodiment 2;
Figure 23 is the user mode reference diagram of Figure 22.
Among the figure: 1, chief editor; 1-1, overcoat; 1-2, interior cover; 1-2-1, in first minute the cover; 1-2-2, in second minute the cover; 1-2-2-1, elastic pressuring plate; 1-2-2-2, self-locking tooth; 1-2-2-3, manual unlocking tabletting; 1-3, trip rod; 1-4, advance the bar stage clip; 1-5, move back the bar stage clip; 1-6, locking structure; 1-7, unlock button; 1-8, move back the bar structure; 1-9, move back bar hands handle; 1-9-1, handle body; 1-9-2, handle bar; 2, disposable nib; 2-1, written overcoat; 2-1-1, needle outlet; 2-1-2, opening end; 2-1-3, annular projection; 2-1-4, spacing preiection; 2-1-5, fluting; 2-2, blood taking needle; 2-2-1, needle body; 2-2-2, syringe needle; 2-3, back stitching stage clip; 2-4, end cap; 2-4-1, access opening; 2-5, two shell fragment self-locking sealing cap; 2-5-1, main part; 2-5-2, hand holding handle part; 2-5-3, shell fragment; 2-6, integral type spininess medicated cap seal box; 2-6-1, box body; 2-6-1-1, interior pipe box part; 2-6-1-2, outer tube sleeve part; 2-6-2, lid; 2-7, micro-protrusions.
The specific embodiment
For further understanding summary of the invention of the present invention, characteristics and effect, the following examples of giving an example now, and conjunction with figs. specifies as follows:
See also Fig. 1-2 3, the painless blood collecting pen of disposable written three spring portables comprises chief editor 1 and disposable written 2.Said chief editor comprises the pen cap be made up of overcoat 1-1 and interior cover 1-2, be slidingly mounted on trip rod 1-3 in the pen cap inner chamber, be installed on the trip rod advance bar stage clip 1-4 and move back bar stage clip 1-5, be located at locking structure 1-6 between trip rod and the interior cover, unlock button 1-7 on the coat be installed, the drawing formula that is connected with the trip rod rear end is moved back bar structure 1-8.Said disposable nib comprises written overcoat 2-1, and the front end of written overcoat is provided with needle outlet 2-1-1, and written overcoat rear end is opening end 2-1-2.The blood taking needle 2-2 that is made up of needle body 2-2-1 and syringe needle 2-2-2 is installed in the said written overcoat, and under external force, said blood taking needle can be along written overcoat inner chamber linear slide.Concrete, the linear slide of blood taking needle in written overcoat is the linear slide of non-beat, guaranteeing that syringe needle thrusts the patient and refers to not swing behind the abdomen, thereby reduces patient's pain as far as possible.The needle body of nib overcoat inner chamber and blood taking needle can adopt fit structures such as square, rounded face, ellipsoid.When both adopt square when the ellipsoid fit structure, beat can not take place when in pen cap inner chamber, sliding in blood taking needle; When both adopted the rounded face fit structure, beat, the guide vane that between need be provided with gathering sill and match with it took place when avoiding blood taking needle in pen cap inner chamber, to slide.Between the front inner wall of the front end of needle body and written overcoat, back stitching stage clip 2-3 is installed, the rear end of written overcoat is provided with the position limiting structure that prevents that blood taking needle from skidding off.Said written overcoat rear end is connected with the detachable plug-in mounting of the front end of chief editor's pen cap.Said blood collecting pen also comprises syringe needle sterile sealing structure.
Concrete, the assembling mode of above-mentioned blood collecting pen and operating principle are: interior cover is inserted in the overcoat from the front end of overcoat, forms with overcoat to be fastenedly connected.Overlap in the inner chamber in trip rod is inserted into; Trip rod slides in interior cover inner chamber and is the linear slide of non-beat; Therefore when be the disc fit structure between interior cover inner chamber and the trip rod, need between interior cover inner chamber and trip rod, gathering sill be set and the guide protrusions muscle that matches with it or the wheel hub that leads.Above-mentioned drawing formula is moved back the bar structure and is used for the pulled backwards trip rod, in the process of trip rod pulled backwards, advances the bar stage clip and is gradually reduced; When being compressed to certain position; Above-mentioned locking structure action is locked in trip rod on the fixed position, and can unclamp the drawing formula and move back the bar structure this moment.Above-mentioned unlock button is used to trigger locking structure, and when pressing unlock button, trip rod is released, and under the effect of advancing the bar stage clip, trip rod ejects forward.When the front end face of trip rod with after the rear end face of blood taking needle needle body contacts, promote blood taking needle along written overcoat inner chamber to front slide, syringe needle on the needle body is stretched out from the front end needle outlet of written overcoat thrusts skin, realize blood sampling.In trip rod moved ahead process, when advancing the bar stage clip and return to drift, under the effect of inertia force, trip rod continued to move ahead, and move back the bar stage clip and be compressed this moment; After trip rod touched the blood taking needle needle body, the back stitching stage clip was also gradually reduced, therefore; After syringe needle thrust the patient and refers to the abdomen certain depth, under the effect of moving back the bar stage clip, trip rod oppositely rebounded; Simultaneously under the effect of back stitching stage clip; The syringe needle of blood taking needle breaks away from patient's finger abdomen, retracts in the written overcoat, thereby has accomplished whole blood collection procedure.
Above-mentioned chief editor's part can repeat no more at this with reference to chief editor's structure of existing blood collecting pen.
In the technique scheme: chief editor's pen cap and written overcoat adopt detachable plug-in mounting connected mode, and under the situation that the blood collecting pen altofrequency is used, medical personnel will dismantle down used disposable nib continually, the newer disposable nib of plug-in mounting continually.Therefore, the chief editor position that is prone to most be damaged be chief editor's pen cap with written overcoat be connected the locking position.For reducing the use cost of blood collecting pen; Avoid the chief editor to scrap too early, in the present invention, chief editor's pen cap further adopts segmentation structure; Be specially: in said cover by cover 1-2-1 in first minute and in second minute cover 1-2-2 constitute; Cover cooperates with said overcoat plug-in mounting in said first minute, in said first minute the front end of cover with second minute in the rear end overlapped through being threaded, the front end that overlaps in said second minute is that detachable plug-in mounting is connected with written overcoat rear end.
In the technique scheme: chief editor's pen cap and written overcoat adopt detachable plug-in mounting connected mode.Be connected firmly from both, and make things convenient for the angle of plug-in mounting to consider, in the present invention, the following two kinds of structures of the first-selected employing of chief editor's pen cap and written overcoat:
1, referring to Fig. 6-9, the position that puts near front end in said second minute is provided with an elastic pressuring plate 1-2-2-1 at least, and the front end medial surface of elastic pressuring plate is provided with self-locking tooth 1-2-2-2.The position that said nib puts outward near the rear end is provided with the annular projection 2-1-3 that matches with the self-locking tooth, and the two sides of said self-locking tooth are the inclined-plane, and the end face of said annular projection is that the inclined-plane cooperates with the medial surface of self-locking tooth.The lateral surface of self-locking tooth adopts ramp structure; Medical personnel are when installing disposable nib; Impose on interior mutually pushing force F1 of self-locking tooth and elastic pressuring plate, because the rear end face of written overcoat contacts with the inclined-plane, the outside of self-locking tooth, this pushing force F1 is broken down into a component F11 and the component F12 perpendicular to the inclined-plane along the inclined-plane; Under the effect of component F12; Elastic pressuring plate is urged outside elasticity and opens, and disposable nib plug-in mounting smoothly is fixed on the chief editor, and the medial surface of self-locking this moment tooth is adjacent on the end face of annular projection.After disposable nib blood sampling was accomplished, when needing the used down disposable nib of dismounting, medical personnel can hold the chief editor; Impose on disposable first outside tensile force f 2 of pen simultaneously; Because annular projection is that the inclined-plane contacts with the medial surface of self-locking tooth, above-mentioned tensile force f 2 is broken down into a component F21 and the component F22 perpendicular to the inclined-plane along the inclined-plane, under the effect of component F12; Elastic pressuring plate is urged outside elasticity and opens, and disposable nib can be smoothly from chief editor's dismounting down.
2, referring to Figure 10-13, the position that puts near front end in said second minute is provided with an elastic pressuring plate 1-2-2-1 at least, and the front end medial surface of elastic pressuring plate is provided with self-locking tooth 1-2-2-2, and the lateral surface of elastic pressuring plate is provided with manual unlocking tabletting 1-2-2-3.The position that said nib puts outward near the rear end is provided with the annular projection that matches with the self-locking tooth, and the end face of said annular projection cooperates for the right angle face with the medial surface of self-locking tooth.The lateral surface of self-locking tooth can adopt right angle face or inclined-plane.When the lateral surface of self-locking tooth when adopting the right angle face, when medical personnel load and unload disposable nib, all need pin the manual unlocking tabletting, could accomplish loading and unloading smoothly; When the lateral surface of self-locking tooth was the inclined-plane, medical personnel need not pin under the situation of manual unlocking tabletting when disposable nib is installed, and disposable nib plug-in mounting smoothly is fixed on the chief editor, and concrete reason is referring to the analysis of above-mentioned first kind of structure.
In the technique scheme: retreating of trip rod is to move back the bar structure through the drawing formula that pulled backwards is connected with the trip rod rear end to realize.Adopt under the situation of this pusher structure, when medical personnel carry out practical operation, need both hands to cooperate, could accomplish and move back the bar action.Operate for ease of medical personnel; Alleviate medical personnel's workload, in the present invention, what on the chief editor, further be provided with one-handed performance moves back the bar structure; Be specially: move back bar handle 1-9; The said bar handle that moves back is made up of handle body 1-9-1 and handle bar 1-9-2, and said handle body is located at pen cap outside, and said handle bar passes be connected vertical with trip rod behind overcoat and the interior cover.Said overcoat with in put to be provided with to make and move back the slotted hole that the bar handle vertically moves along the pen cap.Medical personnel adopt under this situation of moving back the bar structure, only need thumb press with a hands on the handle body, and other four refer to hold overcoat, move thumb then backward, but pulled backwards trip rod is just realized retreating and self-locking of trip rod.
In the technique scheme: the position limiting structure that is located at written overcoat rear end prevents that blood taking needle from skidding off from its opening end.Consider from simple in structure, low cost of manufacture and the angle being convenient to assemble, in the present invention, the preferred following two kinds of schemes of said position limiting structure:
1, said position limiting structure is along the written overcoat spacing preiection 2-1-4 that laterally cavity direction extends in it, said spacing preiection and written overcoat integrated injection molding.Concrete, spacing preiection can be located in the end face of opening end or outside the end face.When spacing preiection is located in the end face of opening end (referring to Figure 14-15), spacing preiection links to each other with the inwall of written overcoat.As selecting problem because of the existing process issues of manufacturing enterprise and material; Can not cause written overcoat to realize that the smooth demoulding and blood taking needle insertion have under certain situation of difficult; Fluting 2-1-5 can further be set in the both sides of spacing preiection, thereby form the elastic pressuring plate structure that connects spacing preiection.When spacing preiection is located at outside the end face of opening end (referring to Figure 16-17); Spacing preiection is made up of the main part that is connected with the written overcoat bossing inboard with being located at body front end; Need to set certain distance between the medial surface of bossing and the rear end face of written overcoat; To guarantee enough elastic deformation amounts, be convenient to packing into of blood taking needle.Above-mentioned position limiting structure is that the installation and the rear end of realizing blood taking needle through the outside strain of spacing preiection and elastic reset are spacing.
2, referring to Figure 18-19, said position limiting structure is end cap 2-4, and said end cap plug-in mounting is fixed on the written overcoat opening end, and said end cap is provided with the access opening 2-4-1 that trip rod is passed.Concrete; End cap is made up of with the main part that is inserted in the written overcoat the rib part that can be pressed on the written overcoat opening end end face; On the outer surface of main part, boss can be set; The groove that matches is set on the inwall of written overcoat, and in the time of in boss is embedded into groove, end cap is fixed on outside the nib and puts.When adopting this position limiting structure, the assembling sequence of whole disposable nib is: earlier the back stitching stage clip is put in the written overcoat, then blood taking needle is inserted in the written overcoat, at last end cap is fitted on the rear end of written overcoat.
In the technique scheme: said syringe needle sterile sealing structure can adopt different designs according to different use objects and occasion.In the present invention, the following two kinds of concrete structures of the first-selected employing of syringe needle sterile sealing structure:
1, referring to Figure 20-21; Said syringe needle sterile sealing structure is the two shell fragment self-locking sealing cap 2-5 that are connected with the syringe needle one; Said pair of shell fragment self-locking sealing cap is the one injection structure, and hand holding handle part 2-5-2 that it passes by the main part 2-5-1 that contacts with syringe needle, from the needle outlet of written overcoat and the two shell fragment 2-5-3 that are located on the hand holding handle part two sides constitute.The front end face of said written overcoat is provided with the groove that matches with shell fragment, and the free end of two shell fragments inserts and forms self-locking in the groove.This pair shell fragment self-locking sealing cap and blood taking needle integrated injection molding.This syringe needle sterile sealing structure is applicable to that the diabetes patient uses when testing oneself blood glucose.
2, referring to Figure 22-23, said syringe needle sterile sealing structure is integral type spininess medicated cap seal box 2-6, and the sealing box is by box body 2-6-1, lid 2-6-2 and be distributed on the intravital a plurality of pin medicated caps of box and constitute; Disposable nib of equal ability plug-in mounting on each pin medicated cap, each pin medicated cap constitutes by being sleeved on the interior pipe box part 2-6-1-1 on the syringe needle and can being sleeved on the outer outer tube sleeve part 2-6-1-2 that puts of nib.This integral type spininess medicated cap seal box can seal many disposable nibs simultaneously, thereby has reduced manufacturing cost.This syringe needle sterile sealing structure is applicable to chemical examination section of hospital blood sampling usefulness.Because of chemical examination section of hospital will carry out many person-times blood sampling work every day, this integral type spininess medicated cap seal box has guaranteed the convenience of blood sampling with quick, and then shortens blood sampling time, has alleviated medical personnel's workload.When medical personnel take a blood sample, only need open the lid, chief editor and a disposable nib are aligned; Insert downwards, can disposable nib be packed on the chief editor, carry on then; Disposable nib is taken out from integral type spininess medicated cap seal box, and next step just can carry out follow-up blood sampling work.
The front end face of above-mentioned written overcoat is when blood sampling to refer to the direct contact site of abdomen with the patient, one, in order to increase written overcoat front end face and the frictional force that refers between the abdomen, and avoid blood collecting pen along refer to that abdomen slides and influence is taken a blood sample effect or syringe needle scuffing skin; Two, in order to alleviate or to eliminate the pain of patient when taking a blood sample, thereby, a micro-protrusions 2-7 on the front end face of written overcoat, be provided with at least, to achieve the above object.
To sum up, this blood collecting pen has following technical characterstic than prior art:
1, the design that adopts warp to manufacture experimently and optimize repeatedly; Really drop to all acceptable minimum level of doctors and patients to the use cost of single blood sampling; The single blood sampling expense that has thoroughly solved the disposable safe hemostix is too high, though existing common blood collecting pen single blood sampling expense is minimum but have cross infection and disabled awkward predicament.
2, this blood collecting pen adopts three spring formula independent design, has guaranteed best blood sampling effect, has realized design effect painless or the hypodynia blood sampling.
3, on the chief editor, design two kinds separately independently trip rod move back the bar structure.Both can realize bimanualness, can realize again that one hand held an independent operation, on the basis of the different operating custom that satisfies different medical personnel, realize the convenience of blood sampling operation.
4, the blood sampling patient because of chemical examination section every day of each hospital is numerous; Cause the frequency of utilization of blood collecting pen very high; Be prone to cause the chief editor to be prone to loosening most or damage (through testing generally after 3000 times), and then cause scrapping of chief editor with the insertion portion that is connected of disposable written overcoat.For avoiding scrapping too early of chief editor, special chief editor's interior cover is arranged to segmental structure, by cover in first minute with overlap in second minute and constitute.The rear end of cover and the front end of first fen cover are through being threaded in second minute, and the front end of cover is connected with the rear end employing plug-in mounting of written overcoat in second minute.In case the front end of cover occurs loosening or damages in second minute, can change again that cover continues to use in subsequent use second minute, guaranteed chief editor's the long life.
5, the insertion of chief editor and disposable nib and fastening design have guaranteed the accurate and quick of disposable nib and chief editor loading and unloading, both can realize the both hands loading and unloading, more can realize one-handed performance, load and unload nib fast, and speed is more convenient sooner.
6, two kinds of syringe needle sterile sealing structures independently.A kind of convenient use when satisfying diabetic and testing oneself blood glucose; A kind ofly satisfy each chemical examination section of hospital, under the convenience that guarantees blood sampling and prerequisite efficiently, farthest shorten the actual needs of blood sampling time and design because of many person-times big workloads blood sampling of every day.
7, on the outer face of disposable written overcoat needle outlet, be designed with micro-protrusions through optimizing; The nib end face influences blood sampling effect or syringe needle scuffing skin in the time of both can avoiding taking a blood sample with the slip that refers to the Pericarpium Arecae skin; The absolute refractory period of nerve capable of using and relative refractory period characteristic guarantee that further the generation of eliminating pain when taking a blood sample maybe drops to the hypodynia scope with pain again.
8, because of the blood taking needle in the disposable nib; Can only expose in moment in when blood sampling; This blood taking needle before blood sampling with the blood sampling after; Therefore all guarantee in the inner chamber of written overcoat, thoroughly solved and stabbed or blood contamination medical personnel's a finger difficult problem, and avoided the social responsibility problem of environmental pollution simultaneously.
9, because of this disposable written simple structure; Wherein written overcoat and blood taking needle can be realized mould porous type injection mo(u)lding in enormous quantities fully, reduce its processing cost, and assembling is fast simple; Can reduce assembly cost again, finally reduce the totle drilling cost that enterprise makes.
Claims (10)
1. the painless blood collecting pen of disposable written three spring portables; Comprise chief editor and disposable nib; Said chief editor comprises the pen cap be made up of overcoat and interior cover, be slidingly mounted on trip rod in the pen cap inner chamber, be installed on the trip rod advance the bar stage clip and move back the bar stage clip, be located at locking structure between trip rod and the interior cover, unlock button on the coat be installed, the drawing formula that is connected with the trip rod rear end is moved back the bar structure; It is characterized in that: said disposable nib comprises written overcoat; The front end of nib overcoat is provided with needle outlet, and written overcoat rear end is an opening end, in the said written overcoat blood taking needle that is made up of needle body and syringe needle is installed; Under external force; Said blood taking needle can be along written overcoat inner chamber linear slide, between the front inner wall of the front end of needle body and written overcoat, the back stitching stage clip is installed, and the rear end of written overcoat is provided with the position limiting structure that prevents that blood taking needle from skidding off; Said written overcoat rear end is that detachable plug-in mounting is connected with the front end of chief editor's pen cap; Said blood collecting pen also comprises syringe needle sterile sealing structure.
2. the painless blood collecting pen of disposable written three spring portables according to claim 1; It is characterized in that: cover is by cover in first minute with overlap in second minute and constitute in said; Cover cooperates with said overcoat plug-in mounting in said first minute; In said first minute the front end of cover with second minute in the rear end of cover through being threaded, the front end that overlaps in said second minute is connected with the detachable plug-in mounting in written overcoat rear end.
3. the painless blood collecting pen of disposable written three spring portables according to claim 2, it is characterized in that: the position that puts in said second minute near front end is provided with an elastic pressuring plate at least, and the front end medial surface of elastic pressuring plate is provided with the self-locking tooth; The position that said nib puts outward near the rear end is provided with the annular projection that matches with the self-locking tooth, and the two sides of said self-locking tooth are the inclined-plane, and the end face of said annular projection is that the inclined-plane cooperates with the medial surface of self-locking tooth.
4. the painless blood collecting pen of disposable written three spring portables according to claim 2; It is characterized in that: the position that puts in said second minute near front end is provided with an elastic pressuring plate at least; The front end medial surface of elastic pressuring plate is provided with the self-locking tooth, and the lateral surface of elastic pressuring plate is provided with the manual unlocking tabletting; The position that said nib puts outward near the rear end is provided with the annular projection that matches with the self-locking tooth, and the end face of said annular projection cooperates for the right angle face with the medial surface of self-locking tooth.
5. the painless blood collecting pen of disposable written three spring portables according to claim 1; It is characterized in that: also be provided with on the said chief editor and move back the bar handle; The said bar handle that moves back is made up of handle body and handle bar; Said handle body is located at pen cap outside, and said handle bar passes be connected vertical with trip rod behind overcoat and the interior cover; Said overcoat with in put to be provided with to make and move back the slotted hole that the bar handle vertically moves along the pen cap.
6. the painless blood collecting pen of disposable written three spring portables according to claim 1 is characterized in that: said position limiting structure is for along written overcoat spacing preiection, said spacing preiection and written overcoat integrated injection molding that laterally cavity direction extends in it.
7. the painless blood collecting pen of disposable written three spring portables according to claim 1, it is characterized in that: said position limiting structure is an end cap, and said end cap plug-in mounting is fixed on the written overcoat opening end, and said end cap is provided with the access opening that trip rod is passed.
8. the painless blood collecting pen of disposable written three spring portables according to claim 1; It is characterized in that: the two shell fragment self-locking sealing caps of said syringe needle sterile sealing structure for being connected with the syringe needle one; Said pair of shell fragment self-locking sealing cap is the one injection structure, and hand holding handle part that it passes by the main part that contacts with syringe needle, from the needle outlet of written overcoat and two shell fragments that are located on the hand holding handle part two sides constitute; The front end face of said written overcoat is provided with the groove that matches with shell fragment, and the free end of two shell fragments inserts and forms self-locking in the groove.
9. the painless blood collecting pen of disposable written three spring portables according to claim 1, it is characterized in that: said syringe needle sterile sealing structure is an integral type spininess medicated cap seal box, the sealing box is by box body, lid and be distributed on the intravital a plurality of pin medicated caps of box and constitute; Disposable nib of equal ability plug-in mounting on each pin medicated cap, each pin medicated cap partly constitutes by being sleeved on the interior pipe box part on the syringe needle and can being sleeved on the outer tube sleeve that puts outside the nib.
10. according to the painless blood collecting pen of the arbitrary described disposable written three spring portables of claim 1-9, it is characterized in that: be provided with a micro-protrusions on the front end face of said written overcoat at least.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210363962.4A CN102835961B (en) | 2012-09-27 | 2012-09-27 | Three-spring portable painless blood sampling pen with disposable pen point |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210363962.4A CN102835961B (en) | 2012-09-27 | 2012-09-27 | Three-spring portable painless blood sampling pen with disposable pen point |
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| CN102835961A true CN102835961A (en) | 2012-12-26 |
| CN102835961B CN102835961B (en) | 2015-01-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108324290A (en) * | 2018-03-01 | 2018-07-27 | 皖南医学院 | The safe Painless blood taking needle of disposable press-type |
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| CN108324290B (en) * | 2018-03-01 | 2023-11-21 | 皖南医学院 | Disposable touch-pressing type safe painless blood taking needle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102835961B (en) | 2015-01-14 |
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Effective date of registration: 20190926 Address after: 101407 Beijing District of Huairou City Economic Development Zone Yanqi Yanqi Street No. 13 Patentee after: BEIJING RUICHENG MEDICAL SUPPLIES CO., LTD. Address before: 300122 Tianjin city Hongqiao District Lianyuan road Haiyuan apartment 3-1-101 Patentee before: Wang Zhen Min |