CN201510612U - Security self-destructive syringe - Google Patents
Security self-destructive syringe Download PDFInfo
- Publication number
- CN201510612U CN201510612U CN2009203093017U CN200920309301U CN201510612U CN 201510612 U CN201510612 U CN 201510612U CN 2009203093017 U CN2009203093017 U CN 2009203093017U CN 200920309301 U CN200920309301 U CN 200920309301U CN 201510612 U CN201510612 U CN 201510612U
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- China
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- core bar
- syringe
- card
- bit part
- piston seat
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Abstract
The utility model provides a security self-destructive syringe, which belongs to the technical field of the medical appliance, and solves the problems of the prior syringe that the self destruction is not thorough, the safety potential danger exists, the structure is instable and complicated, the production cost is high and the like, and comprises a needle cylinder, a core bar which is arranged inside the needle cylinder and a piston holder which is arranged on the front end of the core bar, wherein a piston body is sleeved on the piston holder, the core bar is provided with a plurality of conical stages which are sequentially distributed along the axial direction, the large end of the conical stages faces towards the front end of the core bar, a clamping piece which is arranged on the rear end of the needle cylinder and can move forwards in a single direction along the needle cylinder when the core bar moves in the axial direction is sleeved on the periphery of the core bar, and a connection structure which can be stripped when the clamping piece moves to the front end of the needle cylinder and the piston holder pushes against the clamping piece is arranged between the core bar and the piston holder. The security self-destructive syringe has the advantages of thorough self destruction, security, simple structure, low production cost and the like.
Description
Technical field
This utility model belongs to technical field of medical instruments, relates to a kind of syringe, particularly a kind of safety self-destructing syringe.
Background technology
At present, most of disposable syringe of Shi Yonging is called disposable use clinically, and the problem that in fact still has secondary to use takes place, and mainly being that core bar structure is undesirable causes.Some core bar is provided with to be cut poorly, finishes using, and firmly core bar is fractureed, and the annular cauda that tilts at the oriented core bar afterbody of core bar back end design is also arranged, also have at core bar push-and-pull dish bottom and core bar wall installation alignment restrictions plate.This structure, strict during assembling, do not allow core bar is pressed onto the end, during use alignment restrictions to be broken off with the fingers and thumb disconnectedly, these measures can prevent all that to a certain extent secondary from using the generation of problem, but the difficulty of manufacturing, cost height, troublesome poeration.
In order to overcome the defective of existing syringe, people have designed various syringes.For example, Chinese patent literature once disclosed a kind of syringe [Chinese patent application number 00245394.0; Publication number CN2464349Y], this utility model relates to a kind of Medical Syringe Back Only Core Rod, at the core bar outer wall the symmetric groove of six rows is arranged, the two sections opposite squamas of direction of asking of groove sting, clamp certain position cover in epimere squama thorn outside, the open circles tubular that it is made by stainless sheet steel, the rectangle flexure strip that is slidingly matched with outer sleeve inner wall is arranged at barrel top, the top, two ends of opening barrel has and two outside oblique " M " shape elasticity thorn sheets that stretch out of outer sleeve inner wall interference fit, this retaining core bar can be stopped the generation of secondary reuse problem, and it is supporting to be used for the disposable sterilized syringe trocar sheath.Obviously, such scheme has solved existing disposable syringe to a certain extent can't realize problems such as self-destruction, but the syringe of this class formation can't guarantee that card-bit part is completely fixed, core bar still might slide and realize the possibility of operate as normal, thereby cause the syringe self-destruction thorough inadequately, exist potential safety hazard, structural instability, complex structure simultaneously, a series of problems such as production cost height.
Summary of the invention
The purpose of this utility model is to have the problems referred to above at existing technology, has proposed a kind of safe and reliable, safety self-destructing syringe that self-destruction is thorough, simple in structure, with low cost.
The purpose of this utility model can realize by following technical proposal: a kind of safety self-destructing syringe, comprise syringe, be arranged on core bar and the piston seat of being located at the core bar front end in the syringe, on piston seat, be with piston body, it is characterized in that, have some circular cone steps that distribute successively vertically on the described core bar, and the big end of above-mentioned circular cone step is all towards the front end of core bar, be with in the core bar periphery and be positioned at back end of syringe and can be when core bar moves axially, move to the syndeton that to be broken when syringe front end and piston seat are resisted against on the card-bit part being provided with between core bar and the piston seat when card-bit part along the unidirectional card-bit part that moves forward of syringe.
When card-bit part is unidirectional move to the syringe front end before, core bar can both be advanced and retreat normally, but along with card-bit part is more and more nearer apart from the piston seat distance, the distance that core bar can be drawn back is also just more and more littler, until being resisted against on the piston seat, core bar then can't continue to draw back again, and this moment, card-bit part moved to the syringe front end.In the process that promotes to the core bar front end, the big end of circular cone step props up card-bit part and card-bit part is pushed away forward, when core bar moves back to the back-end, since card-bit part syringe can only be unidirectional forward move, therefore, the card-bit part of this moment can be stuck on the needle cylinder wall, prevents to move backward.When card-bit part be resisted against piston seat simultaneously card-bit part moved to syringe foremost the time, core bar can't continue to shrink back again, also can't forward end advance simultaneously, just can't reuse.If carry out post-tensioning with brute force, syndeton is then broken, and whole syringe has then been realized damaging completely, therefore can't reuse at all.
In above-mentioned a kind of safety self-destructing syringe, the rear end of described card-bit part has several and tilts to the inside and can be resisted against the interior card base of the big end of circular cone step and plurality of outward inclination tiltedly and can act on the outer card base of syringe inwall.
Core bar can be realized card-bit part is moved to the syringe front end, mainly be because card-bit part is provided with the interior card base of inclination to the inside, it is stressed with regard to realizing that card base is resisted against the big end of circular cone step in when core bar pushes away forward, realize that whole card-bit part forward end moves, when core bar retreats, interior card base can open again smoothly, makes things convenient for core bar to pass through.The outer card base that tilts laterally in the card-bit part, when core bar retreated, outer card base can act on the syringe inwall, prevented that card-bit part from drawing back, and when core bar pushed away forward, outer card base can shrink smoothly, did not hinder card-bit part to moving.
In above-mentioned a kind of safety self-destructing syringe, described card-bit part is tubular and has the opening of axial perforation at its sidepiece.Opening is convenient to be installed, and is tubular and is beneficial on core bar and slides.
In above-mentioned a kind of safety self-destructing syringe, the end of each described outer card base has several sharp-pointed heads.Why head is set to sharply is to thrust on the needle cylinder wall in order to be beneficial to, and realizes good location.
In above-mentioned a kind of safety self-destructing syringe, described card-bit part by flaky metal material punching press after bending forming.Metal is safe and reliable, stops the possibility that card-bit part lost efficacy.
In above-mentioned a kind of safety self-destructing syringe, described syndeton comprises the some thin bars that radially are provided with, and above-mentioned thin bar is at the circumferencial direction uniform distribution, and carefully an end and the piston seat of bar are connected, and the other end and core bar are connected.When piston seat is fixed by card-bit part, when core bar retreated, under the effect of pulling force, the thin bar that is connected between piston seat and the core bar was broken easily, has so just realized the disengaging between core bar and the piston seat, and syringe is then destroyed.
In above-mentioned a kind of safety self-destructing syringe, described core bar front end has Connection Block, and described piston seat rear end has the joint pin that inserts in the Connection Block, and the two ends of above-mentioned thin bar are connected on Connection Block and the joint pin.
In above-mentioned a kind of safety self-destructing syringe, have cannelure on the described piston seat, above-mentioned piston body is placed in the above-mentioned cannelure.Cannelure has guaranteed that piston body does not come off when sliding.
In above-mentioned a kind of safety self-destructing syringe, described core bar outer wall is provided with at least two axially extended grooves.
Compared with prior art, the safety self-destruction syringe has the following advantages: adopt when 1, this utility model adopts the syndeton break easily card-bit part reached complete self-destruction purpose, safe and reliable, fastness good.2, this utility model simple in structure, reduced production cost and convenient the installation.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the core bar structure sketch map in this utility model.
Fig. 3 is the partial enlarged drawing of A portion among Fig. 2.
Fig. 4 is a card-bit part expanded view in this utility model.
Fig. 5 is a card-bit part structural representation in this utility model.
Among the figure, 1, syringe; 2, core bar; 21, circular cone step; 22, Connection Block; 23, groove; 3, piston seat; 31, piston body; 32, joint pin; 33, cannelure; 4, card-bit part; 41, interior card base; 42, outer card base; 42a, head; 43, opening; 5, thin bar.
The specific embodiment
Below be specific embodiment of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but this utility model be not limited to these embodiment.
Embodiment one
As illustrated in fig. 1 and 2, a kind of safety self-destructing syringe comprises syringe 1, is arranged on core bar 2 and the piston seat 3 of being located at core bar 2 front ends in the syringe 1, is with piston body 31 on piston seat 3.Have cannelure 33 on the piston seat 3, above-mentioned piston body 31 is placed in the above-mentioned cannelure 33.Cannelure 33 has guaranteed that piston body 31 does not come off when sliding.
Shown in Fig. 2,4 and 5, have some circular cone steps 21 that distribute successively vertically on the core bar 2, and the big end of above-mentioned circular cone step 21 is all towards the front end of core bar 2, on core bar 2 outer walls, be provided with at least two axially extended grooves 23, be with simultaneously and be positioned at syringe 1 rear end and can be when core bar 2 moves axially along the syringe 1 unidirectional card-bit part that moves forward 4 in core bar 2 peripheries.Be tubular and have the opening 43 of axial perforation at its sidepiece by the card-bit part 4 of bending forming after the flaky metal material punching press.The rear end of card-bit part 4 has several and tilts to the inside and can be resisted against the interior card bases 41 of the big end of circular cone step 21 and plurality of outward inclination tiltedly and can act on the outer card base 42 of syringe 1 inwall.The end of outer card base 42 has two sharp-pointed head 42a, and why head 42a is set to sharply is to thrust on the syringe inwall in order to be beneficial to, and realizes good location.
As shown in Figure 3, move to the syndeton that to be broken when syringe 1 front end and piston seat 3 are resisted against on the card-bit part 4 being provided with between core bar 2 and the piston seat 3 when card-bit part 4.Syndeton comprises the some thin bars 5 that radially are provided with, and above-mentioned thin bar 5 is at the circumferencial direction uniform distribution, and carefully an end and the piston seat 3 of bar 5 are connected, and the other end and core bar 2 are connected.More particularly, core bar 2 front ends have Connection Block 22, and piston seat 3 rear ends have the joint pin 32 that inserts in the Connection Block 22, and the two ends of above-mentioned thin bar 5 are connected on Connection Block 22 and the joint pin 32.When piston seat 3 is fixed on syringe 1 front end and core bar 2 when retreating by card-bit part 4, under the effect of pulling force, the thin bar 5 that is connected between piston seat 3 and the core bar 2 is broken easily, has so just realized the disengaging between core bar 2 and the piston seat 3, and syringe is then destroyed.
During work, when card-bit part 4 is unidirectional move to be resisted against on the piston seat 3 before, core bar 2 can both be advanced and retreat normally.But along with card-bit part 4 is more and more nearer apart from piston seat 3 distances, the distance that core bar 2 can be drawn back is also just more and more littler, and until being resisted against on the piston seat 3,2 of core bars can't continue to draw back again, otherwise syndeton is broken easily.At core bar 2 in the process that syringe 1 front end promotes, the big end of core bar 2 circular cone steps 21 props up card-bit part 4 and card-bit part 4 is pushed away forward, when core bar 2 moves back to the back-end, since card-bit part 4 syringe 1 can only be unidirectional forward move, therefore, the card-bit part 4 of this moment can be stuck on the syringe inwall, prevents to move backward.When card-bit part 4 be resisted against piston seat 3 simultaneously card-bit part 4 moved to syringe 1 foremost the time, core bar 2 can't continue to shrink back again, also can't forward end advance simultaneously, just can't reuse.If carry out post-tensioning with brute force, syndeton is then broken, and whole syringe has then been realized damaging completely, therefore can't reuse at all.
Claims (9)
1. safety self-destructing syringe, comprise syringe (1), be arranged on the core bar (2) in the syringe (1) and be located at the piston seat (3) of core bar (2) front end, on piston seat (3), be with piston body (31), it is characterized in that, have some circular cone steps (21) that distribute successively vertically on the described core bar (2), and the big end of above-mentioned circular cone step (21) is all towards the front end of core bar (2), be with in core bar (2) periphery and be positioned at syringe (1) rear end and can be when moving axially, move to syringe (1) front end and piston seat (3) is resisted against the syndeton that can be broken when card-bit part (4) is gone up being provided with between core bar (2) and the piston seat (3) when card-bit part (4) along the unidirectional card-bit part that moves forward of syringe (1) (4) at core bar (2).
2. safety self-destructing syringe according to claim 1, it is characterized in that the rear end of described card-bit part (4) has several and tilts to the inside and to be resisted against the interior card base (41) of the big end of circular cone step (21) and plurality of outward inclination oblique and can act on the outer card base (42) of syringe (1) inwall.
3. safety self-destructing syringe according to claim 2 is characterized in that, described card-bit part (4) is tubular and has the opening (43) of axial perforation at its sidepiece.
4. safety self-destructing syringe according to claim 2 is characterized in that, the end of each described outer card base (42) has several sharp-pointed heads (42a).
5. according to claim 2 or 3 or 4 described safety self-destructing syringes, it is characterized in that, described card-bit part (4) by flaky metal material punching press after bending forming.
6. according to claim 1 or 2 or 3 or 4 described safety self-destructing syringes, it is characterized in that, described syndeton comprises the some thin bars (5) that radially are provided with, above-mentioned thin bar (5) is at the circumferencial direction uniform distribution, and an end and the piston seat (3) of thin bar (5) are connected, and the other end and core bar (2) are connected.
7. safety self-destructing syringe according to claim 6, it is characterized in that, described core bar (2) front end has Connection Block (22), described piston seat (3) rear end has the joint pin (32) that inserts in the Connection Block, and the two ends of above-mentioned thin bar (5) are connected on Connection Block (22) and the joint pin (32).
8. safety self-destructing syringe according to claim 6 is characterized in that, has cannelure (33) on the described piston seat (3), and above-mentioned piston body (31) is placed in the above-mentioned cannelure (33).
9. safety self-destructing syringe according to claim 6 is characterized in that, described core bar (2) outer wall is provided with at least two axially extended grooves (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203093017U CN201510612U (en) | 2009-08-31 | 2009-08-31 | Security self-destructive syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203093017U CN201510612U (en) | 2009-08-31 | 2009-08-31 | Security self-destructive syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201510612U true CN201510612U (en) | 2010-06-23 |
Family
ID=42482007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203093017U Expired - Fee Related CN201510612U (en) | 2009-08-31 | 2009-08-31 | Security self-destructive syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201510612U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110448768A (en) * | 2019-09-16 | 2019-11-15 | 常州市双马医疗器材有限公司 | Single-Use Auto-Disable Syringes |
-
2009
- 2009-08-31 CN CN2009203093017U patent/CN201510612U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110448768A (en) * | 2019-09-16 | 2019-11-15 | 常州市双马医疗器材有限公司 | Single-Use Auto-Disable Syringes |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100623 Termination date: 20180831 |