CN201684253U - Spare part of self-destruction type safe syringe - Google Patents
Spare part of self-destruction type safe syringe Download PDFInfo
- Publication number
- CN201684253U CN201684253U CN2009202979815U CN200920297981U CN201684253U CN 201684253 U CN201684253 U CN 201684253U CN 2009202979815 U CN2009202979815 U CN 2009202979815U CN 200920297981 U CN200920297981 U CN 200920297981U CN 201684253 U CN201684253 U CN 201684253U
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- Prior art keywords
- liquid
- needle stand
- interference
- self
- pushing cylinder
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Abstract
The utility model provides a structure spare part for leading a self-destruction type safe syringe to have no residual liquid. An interference spliced structure is designed into blade shape or hole shape and leaf shape so as to ensure that residual liquid can flow out completely when the clamping structure is in tangential interference, and can not be locked when the clamping structure is tangential; and simultaneously, the interference resistance of the structure is reduced, thus solving two difficulties existing for a long time, namely, the difficulty that a great amount of expensive liquid is left in a safe syringe or a self-destruction type syringe and can not flow into the human body when the clamping structure is in interference connection.
Description
It is 2009201500080 that this utility model application is based on application number, and the applying date is on April 13rd, 2009, and denomination of invention is dividing an application that the Chinese utility application of " a kind of self-destroy safety injector spare and accessory parts " is done.
Technical field
This utility model relates to a kind of self-destroy safety injector, debris is known from experience circulation when particularly relating to the main accessory interference of self-destroy safety injector interface arrangment, the situation that residual liquid is blocked when the interface arrangment interference can not occur, can reach the purpose of noresidue liquid in the syringe.
Background technology
Syringe is a most basic a kind of medical apparatus and instruments, and in order to reduce the propagation of blood borne disease in patient, make laws one after another and force to promote the use of disposable syringe in the countries in the world that comprise China.But, at present the common equal ubiquity of disposable syringe injection back residual liquid can't effusive phenomenon, this defect problem in addition be present at present various existing safety injectors or self-destroyed syringe in.Present known self-destroy safety injector, the safety injector that is mainly the piston puncture type or constitutes by the manual pull-type and needle stand clamping apparatus of being with syringe needle, also have auto spring is set on needle stand, when having injected liquid, the liquid that remains in the structure periphery can't flow out.Need use the expensive injecting liquid drug of 0.5ml such as the state of an illness of a case, when adopting these conventional injector, can residual 0.1ml medicinal liquid after injection finishes, the result causes state of an illness inexpectancy to take a turn for the better because of the dose deficiency.Further contemplate these medicinal liquids and cost an arm and a leg, undoubtedly the patient has been produced dual adverse effect.Therefore this is a difficult problem that needs solution at present in a hurry.This class self-destroy safety injector also has following design defect, as:
1. authorizing publication number is that the Chinese utility model patent of CN200980874Y discloses a kind of pushing cylinder, in the spring automatic retracting device is set, when tangent, residual liquid can't circulate snap ring 6 in cylindrical shell with grab 5 interference in this structure chart 1.
2. authorizing publication number is that the application for a patent for invention of CN1424116A discloses a kind of safety injector, and when tangent, residual liquid can't circulate the flame-arrester vent plug 11 of this structure chart 2 with centre bore 10 interference.
Present existing self-destruction syringe and a kind of safe syringe, the inventor does not expect or does not recognize at the tangent position of safety injector cervical region interface arrangment interference having the phenomenon that residual liquid can't circulate as yet, cervical region is long more, residual liquid or blood are many more, the liquid of the short more remnants of cervical region is few more, but the defective of still not getting rid of remaining residual liquid or blood is not invented a kind of safety injector of noresidue liquid or type self-destroyed noresidue fluid injector at present as yet.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art part, solves the problem of still unsolved noresidue liquid safe self-destroyed syringe at present.It is a kind of when the tangent interference of interface arrangment of key that this content provides, residual liquid or blood still can be along logical without hindrance inflow human bodies, reach the safety self-destructing syringe of the purpose of noresidue liquid, the design's key is to find, utilize the intermediary ditch body of the sheet of piece-shape type structure and sheet the channel that residual liquid therefrom circulated when interference engaged as structure, overcome and inject the insurmountable defective of residual liquid afterwards in the prior art.Therefore, because of the structure difference, it designs different, can adopt multiple interface arrangment mode to solve, when the structure interference was tangent, surplus circulated from the space of interface arrangment at the liquid of clamping interference structure periphery, and design is when different shapes such as interface arrangment band pawl formula or chip solution structure is tangent, the stressed interference of structural member meeting spreading band elasticity can reduce the resistance of clamping interference like this.When so both having guaranteed the tangent interference of this structure, residual liquid can normally circulate, and this structure also can reduce resistance when interference, has solved in the present prior art still unsolved two hang-ups in safety type or the self-destruction syringe.
This utility model technical purpose is achieved in that described safety injector and self-destruction syringe, mainly forms structure and comprises pushing cylinder (1), needle stand (9), retraction bar (5), it is characterized in that:
1), the upper end first step (8) of described needle stand (9) is provided with the laminated structure more than two or two, the last transverse plane of described laminated structure is provided with evagination hook (15), setting can be flow through for liquid in the middle of sheet and the sheet logical liquid ditch (11) or liquid-through hole (4);
2), the upper end of described retraction bar (5) is provided with the blade type top pawl (13) more than two or two, setting can be flow through for liquid in the middle of pawl and the pawl logical liquid ditch (11) or liquid-through hole (4), when pushing cylinder is pushed to foremost, evagination hook (15) interference of the blade type top pawl (13) of described retraction bar (5) and described needle stand (9) is during adaptive the connection, and the peripheral space of described top pawl structure and inner space form the connected space of free flow for liquid by described logical liquid ditch (11) or liquid-through hole (4).
Be subjected to the pressure of pushing cylinder (1) as the retraction bar (5) among the Fig. 4 in a kind of embodiment of the present utility model, pawl plane, blade type top (14) and anti-liquid circle (16) are tangent when stressed, anti-liquid circle (16) breaks away from the first step (8) that is positioned at needle stand (9), therefore residual liquid or blood are from logical liquid ditch (11) or the circulation of liquid-through hole (4) space, can be because of pawl plane, blade type top (14) and anti-liquid circle (16) when tangent, the peripheral liquid (18) that is in blade type top pawl (13) is blocked, and the surplus residual liquid has flowed to logical liquid ditch (11) or liquid-through hole (4) during evagination hook (15) interference of blade type top pawl (13) and needle stand (9), also is two outstanding subject matter of this utility model.
First step (8) as needle stand (9) among the Fig. 5 in a kind of embodiment of the present utility model; blade type jacking block (3) more than two or two is set respectively; and at sheet and middle logical liquid ditch (11) or the liquid-through hole (4) of being provided with of sheet; needle stand (9) upper end evagination hook (15) and logical liquid ditch (11) or liquid-through hole (4) co-located; this structure is provided with the thickness of logical liquid ditch (11) degree of depth less than anti-liquid circle (16); the internal diameter of anti-liquid circle (16) is less than the external diameter of the first step (8) of needle stand (9); the external diameter of first step (8) is subjected to anti-liquid circle (16) internal diameter protection, and liquid that can not leaks outside.At this moment, the blade type top pawl (13) when interference engages of the evagination hook (15) of needle stand (9) and retraction bar (5), the first step (8) that anti-liquid circle (16) begins to break away from needle stand (9), residual liquid flows to needle stand centre bore (19) from logical liquid ditch (11) or liquid-through hole (4) simultaneously, therefore reaches the purpose of noresidue liquid.
In another kind of embodiment of the present utility model, the integral central of pushing cylinder (1) is set to hollow, front end at pushing cylinder (1) is provided with blade type jacking block (3), be that blade type jacking block (3) is provided with the plates more than two or two, the sky body is set in the middle of sheet and the sheet, when pushing cylinder (1) advances toward front end, when the plane (2) of blade type jacking block (3) and anti-liquid circle (16) are tangent, liquid or blood can continue circulation from the space logical liquid ditch (11) or the liquid-through hole (4), in the time of after liquid or blood circulation finish, the anti-liquid circle (16) that is positioned at the first step (8) of needle stand (9) is advanced by pushing cylinder (1), anti-liquid circle (16) promptly breaks away from needle stand (9), at this moment needle stand (9) is in structure interference engagement state with retraction bar (5), under spring (17) effect, and retraction bar (5), needle stand (9) connects needle tubing and springs into the interior hollow of pushing cylinder (1).
When advanced by pushing cylinder (1) as the retraction bar (5) in the another kind of embodiment of the present utility model, the outer shackle (7) of retraction bar (5) is tangent stressed with the convex hook (10) of needle stand (9), the blade type jacking block (3) of pushing cylinder (1) advances to anti-liquid circle (16) simultaneously, anti-simultaneously liquid circle (16) breaks away from the first step (8) of needle stand (9), therefore, remain in the blade type jacking block (3) of pushing cylinder (1) and remain in the peripheral residual liquid of the cervical region (6) of retraction bar (5) or blood from logical liquid ditch (11) or the circulation of liquid-through hole (4) space, can be because of tangent not sealed of outer shackle (7) of convex hook (10) with the retraction bar (5) of needle stand (9).It is stressed with outer shackle (7) interference to work as convex hook (10) simultaneously, outer shackle (7) can shrink from logical liquid ditch (11) space of trend, can not influence logical liquid, because the ditch body space diameter of logical liquid ditch (11) is greater than the diameter of ball-type jacking block (12), convex hook (10) also can spreading when interference engaged when outer shackle (7) and convex hook (10), self-return again after the interference, residual liquid or blood can be without hindrance to logical liquid ditch (11) or liquid-through hole (4) circulation when therefore this structure outer shackle of assurance (7) and convex hook (10) were tangent, and shackle (7) shrinks convex hook (10) spreading outside when the tangent interference of this structure, so noresidue liquid is two outstanding main points of this utility model with reducing resistance.
As the another kind of embodiment in this utility model, the first step (8) of needle stand among Figure 11 (9) is provided with the blade type jacking block (3) more than two or two respectively, and logical liquid ditch (11) or liquid-through hole (4) are set in the middle of sheet and sheet,
The convex hook (10) of needle stand (9) is synchronous with logical liquid ditch (11), and the external diameter of first step (8) is subjected to the internal diameter protection of anti-liquid circle (16), and liquid that can not leaks outside.This structure is provided with the thickness of the degree of depth of logical liquid ditch (11) less than anti-liquid circle (16), and the internal diameter of anti-liquid circle (16) is less than the external diameter of first step (8).And when liquid circle (16) is prevented in the stressed propelling of blade type jacking block (3) of pushing cylinder (1), anti-liquid circle begins the first step (8) of run-bake-needle fault seat (9), simultaneously, convex hook (10) engages with outer shackle (7) beginning interference, so slight spreading of the blade type jacking block (3) of first step (8) meeting, shrink in the stressed space from the logical liquid ditch (11) of trend of the outer shackle (7) of retraction bar (5), shrinks back reposition after the interference again, and this structure interference does not have resistance when engaging.Therefore, noresidue liquid is set this structure and the structure interference reduces resistance, is two outstanding main points of this utility model.
Technical scheme described in the utility model, give prominence to when being safety injector or the interference of self-destruction syringe primary structure especially, the surplus debris is known from experience the continuation circulation, can not be lockable because of the liquid that structure is left when tangent, and the former resistance that is the interference clamping of concentrating, the branch esd resistance is set, during also just original interface arrangment interference, its is changed that desensitization is felt and soft and reach effect such as noresidue liquid structure.
Description of drawings
Fig. 1, Fig. 6 are respectively this utility model embodiment 1 and embodiment 2 structural representations.
Fig. 2, Fig. 3 are the local structure for amplifying sketch map of this utility model embodiment 1, and Fig. 7, Fig. 8 are the local structure for amplifying sketch map of this utility model embodiment 2.
Fig. 4, Figure 10 are respectively the structure enlarged diagram of this utility model embodiment 1 and embodiment 2 retraction bars.
Fig. 4 A, Figure 10 A are respectively the enlarged diagram of overlooking of this utility model embodiment 1 and embodiment 2 retraction bars.
Fig. 9 is the pushing cylinder enlarged diagram of this utility model embodiment 2.
Fig. 9 A be utility model embodiment 2 pushing cylinder overlook enlarged diagram.
Fig. 5, Figure 11 are respectively the enlarged diagram of this utility model embodiment 1 and embodiment 2 needle stands.
Fig. 5 A, Figure 11 A are the enlarged diagram of overlooking of this utility model embodiment 1 and embodiment 2.
Figure 12 is the pushing cylinder sketch map of this utility model embodiment 1.
Among the figure: 1. pushing cylinder; 2. jacking block plane; 3. blade type jacking block; 4. liquid-through hole; 5. retraction bar; 6. cervical region; 7. outer shackle; 8. first step; 9. needle stand; 10. convex hook; 11. logical liquid ditch; 12. ball-type jacking block; 13. blade type top pawl; 14. pawl plane, blade type top; 15. evagination hook; 16. anti-liquid circle; 17. spring; 18. residual liquid; 19. needle stand centre bore.
The specific embodiment
Embodiment 1 (optimal way of the present utility model):
In embodiment 1 of the present utility model, described safety type or self-destruction syringe, critical piece comprise pushing cylinder 1, retraction bar 5, needle stand 9 with reference to Fig. 1, Fig. 4, Fig. 5, Figure 12, and the front end of pushing cylinder 1 is connected with retraction bar 5.Anti-liquid circle 16 is arranged at the first step 8 of the needle stand 9 of safety or self-destroyed syringe, and interference fit with it.Described pushing cylinder 1 is provided with the hollow body, the blade type top pawl 13 of retraction bar 5 is set at hollow body front end, under pushing cylinder 1 propelling situation, the blade type top pawl 13 of retraction bar 5 advances to anti-liquid circle 16, at this moment, the pawl plane, blade type top 14 of retraction bar 5 breaks away from first steps 8 with the anti-liquid circle 16 of anti-liquid circle 16 tangent propellings, at this moment, is transfused to human body at the residual liquid 18 of Fig. 1 surplus from the centre bore 19 that logical liquid ditch 11 or liquid-through hole 4 flow to needle stand 9.And the blade type top pawl 13 of the bar 5 that bounces back simultaneously engages with evagination hook 15 interference of needle stand 9, blade type top pawl 13 pressurizeds are automatic spreading, restore after the interference, under stressed progradation this moment, spring 7 discharges its these elasticity, the bar 5 that bounces back is sprung into the purpose that reaches self-destructing safety noresidue liquid in the empty body of pushing cylinder 1 together with needle stand 9 and needle tubing.
Embodiment 2:
With reference to Fig. 6, Fig. 9, Figure 10, Figure 11, in embodiment 2 of the present utility model, described safe syringe or self-destruction syringe, its critical piece comprise that pushing cylinder 1, retraction bar 5, needle stand 9, anti-liquid circle 16 are arranged at safety injector or self-destruction syringe.Described pushing cylinder 1 is provided with the hollow body, hollow body front end be provided with retraction bar 5 comprise cervical region 6 and outside shackle 7.Under pushing cylinder 1 propelling situation, blade type jacking block 3 advances to the anti-liquid circle 16 of the first step 8 of needle stand 9, anti-liquid circle 16 pressurizeds break away from the first step 8 of needle stand 9, simultaneously, at the blade type jacking block 3 of pushing cylinder 1 when the anti-liquid circle 16 of needle stand 9 advances, the outer shackle 7 of retraction bar 5 and the convex hook 10 tangent interference of needle stand 9, outer shackle 7 shrinks to the space of logical liquid ditch 11, space spreading after convex hook 10 stressed anti-liquid circles 16 to first step 8 break away from, can return former after outer shackle 7 and 10 interference of convex hook automatically, such designization subtracts the stressed of interface arrangment interference, and the residual liquid pressurized of surplus flows into the purpose that needle stand centre bore 19 reaches noresidue from logical liquid ditch 11 of trend or liquid-through hole 4 simultaneously.
The present utility model can also design other enforcements in conjunction with concrete applicable cases according to this utility model still continues to circulate at the residual liquid of each structure interference surplus technical scheme and reach noresidue liquid mode including, but not limited to the foregoing description 1 and embodiment 2 described embodiments.
Claims (2)
1. self-destroy safety injector spare and accessory parts comprise pushing cylinder (1), needle stand (9), retraction bar (5), it is characterized in that:
1), the upper end first step (8) of described needle stand (9) is provided with the laminated structure more than two or two, the last transverse plane of described laminated structure is provided with evagination hook (15), setting can be flow through for liquid in the middle of sheet and the sheet logical liquid ditch (11) or liquid-through hole (4);
2), the upper end of described retraction bar (5) is provided with the blade type top pawl (13) more than two or two, setting can be flow through for liquid in the middle of pawl and the pawl logical liquid ditch (11) or liquid-through hole (4), when pushing cylinder is pushed to foremost, evagination hook (15) interference of the blade type top pawl (13) of described retraction bar (5) and described needle stand (9) is during adaptive the connection, and the peripheral space of described top pawl structure and inner space form the connected space of free flow for liquid by described logical liquid ditch (11) or liquid-through hole (4).
2. a kind of self-destroy safety injector spare and accessory parts according to claim 1, it is characterized in that: outer being arranged with of the first step (8) of described needle stand (9) prevented liquid circle (16), and the blade type top pawl (13) of described retraction bar (5) will touch the first step (8) that described anti-liquid circle (16) breaks away from described needle stand (9) forward during preceding the pushing away of described pushing cylinder (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202979815U CN201684253U (en) | 2009-04-13 | 2009-04-13 | Spare part of self-destruction type safe syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202979815U CN201684253U (en) | 2009-04-13 | 2009-04-13 | Spare part of self-destruction type safe syringe |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201500080U Division CN201469818U (en) | 2008-05-08 | 2009-04-13 | Auto-disable safe syringe part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201684253U true CN201684253U (en) | 2010-12-29 |
Family
ID=43372545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202979815U Expired - Lifetime CN201684253U (en) | 2009-04-13 | 2009-04-13 | Spare part of self-destruction type safe syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201684253U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108014397A (en) * | 2017-12-07 | 2018-05-11 | 汕头华尔怡医疗器械有限公司 | Syringe |
-
2009
- 2009-04-13 CN CN2009202979815U patent/CN201684253U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108014397A (en) * | 2017-12-07 | 2018-05-11 | 汕头华尔怡医疗器械有限公司 | Syringe |
| WO2019109814A1 (en) * | 2017-12-07 | 2019-06-13 | 杨德怡 | Syringe |
| CN108014397B (en) * | 2017-12-07 | 2019-08-30 | 杨德怡 | Syringe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HUAERYI MEDICAL EQUIPMENT CO., LTD., SHANTOU Free format text: FORMER OWNER: YANG YUHE Effective date: 20111024 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 515000 SHANTOU, GUANGDONG PROVINCE TO: 515064 SHANTOU, GUANGDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20111024 Address after: 515064 Guangdong Shantou Golden Ring Road (Qishan High School Road) Patentee after: Shantou Wealy Medical Instrument Co., Ltd. Address before: 515000 Guangdong City, Shantou province Shantou Ring Road north Yi Medical Equipment Co., Ltd. Patentee before: Yang Yuhe |
|
| CX01 | Expiry of patent term |
Granted publication date: 20101229 |
|
| CX01 | Expiry of patent term |