CN2649099Y - Safety self-ruined syringe - Google Patents
Safety self-ruined syringe Download PDFInfo
- Publication number
- CN2649099Y CN2649099Y CN 200320101968 CN200320101968U CN2649099Y CN 2649099 Y CN2649099 Y CN 2649099Y CN 200320101968 CN200320101968 CN 200320101968 CN 200320101968 U CN200320101968 U CN 200320101968U CN 2649099 Y CN2649099 Y CN 2649099Y
- Authority
- CN
- China
- Prior art keywords
- groove
- needle stand
- supporting pin
- push rod
- needle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 210000000078 claw Anatomy 0.000 claims description 28
- 230000033001 locomotion Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- 239000008280 blood Substances 0.000 abstract description 3
- 210000004369 blood Anatomy 0.000 abstract description 3
- 238000005086 pumping Methods 0.000 abstract 3
- 238000000034 method Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 239000007799 cork Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
A safe self-destroying injector consists of a needle tube, a push rod and a rubber plug. The front of the needle tube installs a needle stand and a needle head is arranged on the needle head. A supporting pin is installed in the inner hole of the needle stand and two movable location fixture blocks are installed in the continuous canal at the two sides of the needle stand. The supporting pin can push the location fixture block into the groove in the inner wall of the needle tube to make the needle stand fix inside the needle tube. An one-way moving thrust rod is installed inside the push rod with one end inserting into the intracavity of the needle stand and combined with the supporting pin, which can push the supporting pin to move in axial direction. The location fixture block is arranged in the needle stand supported by the supporting pin. When the thrust rod pushes the supporting pin, the needle stand will be towed into the needle tube easily and can not be used any more, realizing self-destroying truly. The mould thereof is simply to establish, the processing is convenient, the quality is reliable and the rate of finished products is higher. Secondly, because the thrust rod uses retractable structure, the rubber plug can be assembled to the bottom preventing the entry of the air when pumping blood or pumping liquid, thus realizing the purpose of accurate capability of the pumping liquid.
Description
Technical field
This utility model relates to a kind of syringe, relates in particular to the syringe that a kind of self-destructed disposable uses.
Background technology
In the prior art, it as the patent No. 03100668.X number Chinese invention patent, disposable formula syringe safe in utilization is disclosed, it comprises entry needle, needle stand, locking plate, piston, push rod and needle tubing, it is characterized in that: needle tubing is provided with locking slot and positive stop lug boss, and push rod is provided with position-arresting disk, the front end of push rod is enclosed with piston and is provided with flame-arrester vent plug, locking slot place in the needle tubing is pressed with locking plate, and locking plate is provided with centre bore, and needle stand is provided with a safety clamp and bracing ring.Though above-mentioned patent is a kind of disposable self-destruction syringe simple in structure, there is following shortcoming in it: at first, the needle stand of above-mentioned patent is to match with described needle tubing by an elasticity locking plate, and its mould is difficult to offer, the processing technique complexity; Secondly, the yield rate of its processing is lower, has influenced the promotion and application of this series products.
The utility model content
The purpose of this utility model is intended to overcome the deficiency of above-mentioned prior art, and a kind of safety type self-destroyed syringe is provided, and the mould of this syringe is offered simply, and is easy to process, the yield rate height.
A kind of safety type self-destroyed syringe that provides according to this utility model, comprise that a hollow needle tubing, is installed in the plug that the interior push rod and of described needle tubing is installed in described push rod front end, the front end of described needle tubing is equipped with a needle stand, one syringe needle is installed on the described needle stand, described needle stand endoporus is equipped with a supporting pin that can move vertically, in the groove of the both sides at described needle stand middle part two activity orientation fixture blocks are installed, described supporting pin can push described positioning wedged block in one groove of described needle interior wall, and described needle stand is fixed in the described needle tubing; But the thrust rod of an one-way movement is installed in the described push rod, and an end of described thrust rod can stretch into described needle stand inner chamber and match with described supporting pin, can promote described supporting pin axially-movable.
The self-destruction syringe of a kind of improvement that provides according to this utility model also has following attached technical characterictic:
The front end of described thrust rod is formed with first draw-in groove, and its root is formed with second draw-in groove and the 3rd draw-in groove, and described first draw-in groove can match with an elastic claw foot of described needle stand lower end; Described second draw-in groove and the 3rd draw-in groove can match with an elasticity support claw of described push rod inside.
The contacted contact surface in one medial wall of described elastic claw foot and described first draw-in groove is an inclined-plane.
The outside of described positioning wedged block is formed with an inclined-plane, and the inclined-plane in described inclined-plane and the described groove matches.
The posterior face of described thrust rod is formed with at least one claw, and described claw can be stuck on the inner end wall of described push rod.
Described push rod is provided with an easy breaking off section, and described push rod can fracture along described easy breaking off section.
Described supporting pin is a cylinder, and it is formed with at least one passage that allows outside liquid to circulate.
Be formed with at least one reversed acanthoid projection on the described push rod, described projection can be stuck in the front end cavity of the bulge loop on the described syringe rear end inwall.
Between described needle stand and the described needle tubing sealing ring is installed.
One end of described supporting pin is formed with a spacing draw-in groove, and described spacing draw-in groove can match with the protruding hook on the described positioning wedged block.
A kind of safety type self-destroyed syringe that provides according to this utility model compared with prior art has following advantage: at first, be provided with positioning wedged block in the needle stand, support with supporting pin, when the thrust rod promoted supporting pin, needle stand will being drawn in the needle tubing like a cork, can't reuse, really reached self-destruction, its mould is offered simply, and is easy to process, reliable in quality, yield rate is than higher; Secondly, because the thrust rod adopts telescopic structure, plug can be assembled into the end, reaches no air admission when making blood drawing or drawing liquid, arrives drawing liquid capacity purpose accurately; Once more, supporting pin is provided with less passage, is guaranteeing to play the residual effect of no liquid again under the situation that liquid passes through smoothly.
Description of drawings
Fig. 1 is the cutaway view of a kind of preferred embodiment of providing according to this utility model.
Fig. 2 is the front view of core bar among Fig. 1.
Fig. 3 is that the master of thrust rod among Fig. 1 looks enlarged drawing.
Fig. 4 is that the master of supporting pin looks enlarged drawing among Fig. 1.
Fig. 5 is the upward view of Fig. 4.
Fig. 6 is the cutaway view Amplified image of positioning wedged block among Fig. 1.
Fig. 7 is the amplification view of needle stand among Fig. 1.
Fig. 8 is that cutaway view is looked on the left side of Fig. 7.
Fig. 9 is the cutaway view of the needle tubing among Fig. 1.
Figure 10 is the cutaway view of the unused state of a kind of safety type self-destroyed syringe of this utility model.
Figure 11 is the cutaway view of the drawing liquid state of a kind of safety type self-destroyed syringe of this utility model.
Figure 12 is the cutaway view that pushes away liquid status of a kind of safety type self-destroyed syringe of this utility model.
Figure 13 be a kind of safety type self-destroyed syringe of this utility model push away the finish cutaway view of state of liquid.
Figure 14 is the cutaway view of a kind of safety type self-destroyed syringe of this utility model self-destruction first step.
Figure 15 is a kind of safety type self-destroyed syringe of this utility model self-destruction cutaway view in second step.
The specific embodiment:
Referring to Fig. 1 to Fig. 9, the preferred embodiment of a kind of safety type self-destroyed syringe that provides according to this utility model, comprise a hollow needle tubing 1, one is installed in the plug 2 that described needle tubing 1 interior push rod 3 and is installed in described push rod 3 front ends, the front end of described needle tubing 1 is equipped with a needle stand 11, one syringe needle 7 is installed on the described needle stand 11, described needle stand 11 endoporus are equipped with a supporting pin that can move vertically 4, in the groove 112 of the both sides at described needle stand 11 middle parts two activity orientation fixture blocks 5 are installed, described supporting pin 4 can push described positioning wedged block 5 in the groove 12 of described needle tubing 1 inwall, and described needle stand 11 is fixed in the described needle tubing 1; But the thrust rod 6 of an one-way movement is installed in the described push rod 3, and an end of described thrust rod 6 can stretch into described needle stand 11 inner chambers and match with described supporting pin 4, can promote described supporting pin 4 axially-movables.Said structure is by described supporting pin 4 two described positioning wedged blocks 5 to be expanded outwardly, and is stuck in the described groove 12 of inwall of described needle tubing 1, and described needle stand 11 and described needle tubing 1 is firmly fixing.Described thrust rod 6 on described push rod 3 promotes described supporting pin 4 axially-movables, described supporting pin 4 is broken away from two described positioning wedged blocks 5 to be cooperated, at this moment, described positioning wedged block 5 loses support, to the inner chamber landing, described needle stand 11 is lost with described needle tubing 1 be connected, described needle stand 11 can't be fixed together with described needle tubing 1, reaches the self-destruction purpose.
Referring to Fig. 1 and Fig. 3, a kind of preferred embodiment that provides according to this utility model, the front end of described thrust rod 6 is formed with first draw-in groove 61, and its root is formed with second draw-in groove 62 and the 3rd draw-in groove 63, and described first draw-in groove 61 can match with an elastic claw foot 111 of described needle stand 11 lower ends; Described second draw-in groove 62 and the 3rd draw-in groove 63 can match with an elasticity support claw 31 of described push rod 3 inside.During state after assembling, described first draw-in groove 61 matches with described elasticity support claw 31 with described elastic claw foot 111 clamping mutually, described second draw-in groove 62, guarantees that described plug 2 and described push rod 3 are installed to the end, reach no air admission when making drawing liquid or blood drawing, the drawing liquid capacity is purpose accurately.Described elasticity support claw 31 can guarantee 6 one-way movements of described thrust rod, and it can only outwards be moved, and can not inwardly move.
Referring to Fig. 7 and Fig. 8, according to a kind of preferred embodiment that this utility model provides, described elastic claw foot 111 is an inclined-plane with a medial wall 611 contacted contact surfaces 113 of described first draw-in groove 61.Said structure can guarantee after described needle stand 11 is pulled into described needle tubing 1, described needle stand 11 deflections, and needle point can sting on the inwall of described needle tubing 1, and described needle stand 11 can't be pushed out.
Referring to Fig. 6 and Fig. 9, according to a kind of preferred embodiment that this utility model provides, the edge forming of described positioning wedged block 5 has an inclined-plane 51, and described inclined-plane 51 matches with a inclined-plane 121 in the described groove 12.Said structure can make described fixture block 5 separate with described groove 12 easily, reaches the purpose of self-destruction.
Referring to Fig. 1, Fig. 2 and Fig. 3, according to a kind of preferred embodiment that this utility model provides, the posterior face of described thrust rod 6 is formed with at least one claw 64, and described claw 64 can be stuck on the inner end wall 32 of described push rod 3.Described claw 64 is the agnail structure, has guaranteed the convenience of its installation, and described thrust rod 6 can't be spun off from the inner chamber of described push rod 3.
Referring to Fig. 2, according to a kind of preferred embodiment that this utility model provides, described push rod 3 is provided with an easy breaking off section 33, and described push rod 3 can fracture along described easy breaking off section 33.Thereby guarantee that described push rod 3 can't reuse, and reaches the purpose of real self-destruction.
Referring to Fig. 4, according to a kind of preferred embodiment that this utility model provides, described supporting pin 4 is a cylinder, and it is formed with at least one passage 41 that allows outside liquid to circulate.Described passage 41 can guarantee that outside liquid enters, and can reduce the liquid residue in the described needle tubing 1 simultaneously.
Referring to Fig. 1, Fig. 2 and Fig. 9, according to a kind of preferred embodiment that this utility model provides, be formed with at least one reversed acanthoid projection 34 on the described push rod 3, described protruding 34 can be stuck in the front end cavity of the bulge loop 13 on the described needle tubing 1 rear end inwall.Prevent that described push rod 3 from being pulled out described syringe 1 easily, be beneficial to described push rod 3 simultaneously and fracture.
Referring to Fig. 1,, a sealing ring 14 is installed between described needle stand 11 and the described needle tubing 1 according to a kind of preferred embodiment that this utility model provides.Guarantee the sealing of described needle stand 11 and described needle tubing 1.
Referring to Fig. 1, Fig. 4 and Fig. 6, according to a kind of preferred embodiment that this utility model provides, an end of described supporting pin 4 is formed with a spacing draw-in groove 42, and described spacing draw-in groove 42 can match with the protruding hook 52 on the described positioning wedged block 5.Said structure is beneficial to the installation of described supporting pin 4, play a localized function, but it is stressed smaller, can separate easily.
Referring to Fig. 1 to Figure 14 work process of the present utility model is described, referring to Figure 10, unused state of the present utility model, this moment, described fixture block 5 was supported by described supporting pin 4, described needle stand 11 and described needle tubing 1 is firmly fixing, described first draw-in groove 61 of described thrust rod 6 matches with described elastic claw foot 111, and described elasticity support claw 31 is supported on described second draw-in groove 62 places.Referring to Figure 11, drawing liquid state of the present utility model, when described push rod 3 pulls back, because first draw-in groove 61 of described thrust rod 6 matches with described elastic claw foot 111, make described thrust rod 6 keep motionless, described elasticity support claw 31 separates with described second draw-in groove 62, enter described the 3rd draw-in groove 63 places, described claw 64 is stuck on the inner end wall 32 of described push rod 3, at this moment, described thrust rod 6 will overcome the clamping power of described elastic claw foot 111, separates with described elastic claw foot 111, and the part that described thrust rod 6 is exposed increases.Referring to Figure 12 and Figure 13, the liquid status and push away the liquid completion status of pushing away of the present utility model, at this moment, described thrust rod 6 promotes described supporting pin 4 motions, it is separated with described fixture block 5, but described thrust rod 6 can support described fixture block 5.Referring to Figure 14, the self-destruction first step of the present utility model, described push rod 3 is pulled back, this moment, described thrust rod 6 separated with described fixture block 5, described fixture block 5 loses support, break away from described groove 12, in the process that described thrust rod 6 retreats, described first draw-in groove 61 once more with the clamping mutually of described elastic claw foot 111, spur described needle stand 11 to the motion of the inner chamber of described needle tubing 1, after described needle stand 11 is all drawn in described needle tubing 1, under the effect on the inclined-plane 113 of described elastic claw foot 111, make described needle stand 11 deflections, needle point can sting on the inwall of described needle tubing 1.Referring to Figure 15, second step of self-destruction of the present utility model, described core bar 3 is fractureed from described easy breaking off section 33, reach real self-destruction.
Above-mentioned several embodiment is only for the usefulness that this utility model is described; and be not to restriction of the present utility model; the those of ordinary skill in relevant technologies field; under the situation that does not break away from spirit and scope of the present utility model; can also make various variations and modification; therefore all technical schemes that are equal to also belong to category of the present utility model, and scope of patent protection of the present utility model should be limited by each claim.
Claims (10)
1, a kind of safety type self-destroyed syringe, comprise a hollow needle tubing (1), one is installed in the plug (2) that the interior push rod (3) and of described needle tubing (1) is installed in described push rod (3) front end, the front end of described needle tubing (1) is equipped with a needle stand (11), one syringe needle (7) is installed on the described needle stand (11), it is characterized in that: described needle stand (11) endoporus is equipped with a supporting pin that can move vertically (4), in the groove (112) of the both sides at described needle stand (11) middle part two activity orientation fixture blocks (5) are installed, described supporting pin (4) can push described positioning wedged block (5) in the groove (12) of described needle tubing (1) inwall, and described needle stand (11) is fixed in the described needle tubing (1); Described push rod (3) but in the thrust rod (6) of an one-way movement is installed, an end of described thrust rod (6) can stretch into described needle stand (11) inner chamber and match with described supporting pin (4), can promote described supporting pin (4) axially-movable.
2, a kind of safety type self-destroyed syringe as claimed in claim 1, it is characterized in that: the front end of described thrust rod (6) is formed with first draw-in groove (61), its root is formed with second draw-in groove (62) and the 3rd draw-in groove (63), and described first draw-in groove (61) can match with an elastic claw foot (111) of described needle stand (11) lower end; Described second draw-in groove (62) and the 3rd draw-in groove (63) can match with an elasticity support claw (31) of described push rod (3) inside.
3, a kind of safety type self-destroyed syringe as claimed in claim 2 is characterized in that: described elastic claw foot (111) is an inclined-plane with the contacted contact surface in a medial wall (611) (113) of described first draw-in groove (61).
4, a kind of safety type self-destroyed syringe as claimed in claim 1 or 2, it is characterized in that: the edge forming of described positioning wedged block (5) has an inclined-plane (51), and the inclined-plane (121) in described inclined-plane (51) and the described groove (12) matches.
5, a kind of safety type self-destroyed syringe as claimed in claim 1 or 2, it is characterized in that: the posterior face of described thrust rod (6) is formed with at least one claw (64), and described claw (64) can be stuck on the inner end wall (32) of described push rod (3).
6, a kind of safety type self-destroyed syringe as claimed in claim 1 or 2, it is characterized in that: described push rod (3) is provided with an easy breaking off section (33), and described push rod (3) can fracture along described easy breaking off section (33).
7, a kind of safety type self-destroyed syringe as claimed in claim 1 or 2, it is characterized in that: described supporting pin (4) is a cylinder, it is formed with at least one passage (41) that allows outside liquid to circulate.
8, a kind of safety type self-destroyed syringe as claimed in claim 1 or 2, it is characterized in that: be formed with at least one reversed acanthoid projection (34) on the described push rod (3), described projection (34) can be stuck in the front end cavity of the bulge loop (13) on the inwall of described needle tubing (1) rear end.
9, a kind of safety type self-destroyed syringe as claimed in claim 1 or 2 is characterized in that: between described needle stand (11) and the described needle tubing (1) sealing ring (14) is installed.
10, a kind of safety type self-destroyed syringe as claimed in claim 1 or 2, it is characterized in that: an end of described supporting pin (4) is formed with a spacing draw-in groove (42), and described spacing draw-in groove (42) can match with the protruding hook (52) on the described positioning wedged block (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320101968 CN2649099Y (en) | 2003-10-27 | 2003-10-27 | Safety self-ruined syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320101968 CN2649099Y (en) | 2003-10-27 | 2003-10-27 | Safety self-ruined syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2649099Y true CN2649099Y (en) | 2004-10-20 |
Family
ID=34339902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320101968 Expired - Fee Related CN2649099Y (en) | 2003-10-27 | 2003-10-27 | Safety self-ruined syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2649099Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011029264A1 (en) * | 2009-09-10 | 2011-03-17 | 常州和康医疗器材有限公司 | Disposable safety injector with retractable needle |
-
2003
- 2003-10-27 CN CN 200320101968 patent/CN2649099Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011029264A1 (en) * | 2009-09-10 | 2011-03-17 | 常州和康医疗器材有限公司 | Disposable safety injector with retractable needle |
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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: LIN ZUOQIAN Free format text: FORMER OWNER: YING XIANGYUN Free format text: FORMER OWNER: YE MINGHUA Effective date: 20041210 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20041210 Address after: 317500 Zhejiang province Wenling City Taiping Street million top Patentee after: Lin Zuoqian Address before: Downstairs the east of the village of Zhejiang province 317523 flooding the town of Wenling City Co-patentee before: Ye Minghua Patentee before: Ying Xiangyun |
|
| ASS | Succession or assignment of patent right |
Owner name: JIANGXI HONGDA MEDICAL APPLIANCE GROUP CO.,LTD. Free format text: FORMER OWNER: LIN ZUOQIAN Effective date: 20050527 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20050527 Address after: 331700 No. 39 Shengli South Road, Jinxian County, Jiangxi Province Patentee after: Jiangxi Hongda Medical Equipment Group Co., Ltd. Address before: 317500 Zhejiang province Wenling City Taiping Street million top Patentee before: Lin Zuoqian |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20041020 Termination date: 20111027 |