CN202666124U - Pneumatic retractable self-destruction syringe - Google Patents
Pneumatic retractable self-destruction syringe Download PDFInfo
- Publication number
- CN202666124U CN202666124U CN 201220311787 CN201220311787U CN202666124U CN 202666124 U CN202666124 U CN 202666124U CN 201220311787 CN201220311787 CN 201220311787 CN 201220311787 U CN201220311787 U CN 201220311787U CN 202666124 U CN202666124 U CN 202666124U
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- China
- Prior art keywords
- needle stand
- injection rod
- injection
- self
- injection tube
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- 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
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- 238000002347 injection Methods 0.000 claims abstract description 135
- 239000007924 injection Substances 0.000 claims abstract description 135
- 238000007789 sealing Methods 0.000 claims abstract description 27
- 210000002445 nipple Anatomy 0.000 claims description 34
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 210000002435 tendon Anatomy 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000006378 damage Effects 0.000 abstract 2
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 239000003814 drug Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 244000273618 Sphenoclea zeylanica Species 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model belongs to the technical field of injectors, in particular relates to a pneumatic retractable self-destruction syringe. The pneumatic retractable self-destruction syringe comprises a syringe, a hollow injection bar, a needle seat, a sealing ring, a piston and a sealing joint, wherein the sealing joint and the needle seat are provided with connection structures which are matched, the inner wall of the front end of the syringe and the outer wall of the front end of the needle seat are hermetically sealed, a limiting device is arranged on the inner wall of the injection bar, and an exhaust hole is arranged at the lower end of the injection bar. The pneumatic retractable self-destruction syringe is simple in structure, easy to process and form, low in manufacturing cost, simple to assemble and low in labor intensity of workers, the self-destruction steps comprise: firstly inserting the sealing joint into an inner hole of the needle seat through force of fingers, wherein the sealing joint is loosened while injecta is pushed entirely; and continuously pushing a sealing ring forwards to generate air pressure, injecting the sealing joint in the injection bar by utilizing energy released by compressed air. The precision requirement of products can be lowered, the air compression degree needed by self destruction can be reduced, so that the self destruction is easier and more reliable.
Description
Technical field
This utility model belongs to the injector technology field, is specifically related to a kind of vapour-pressure type retraction self-destroyed syringe.
Background technology
Patent No. ZL 200920113284.X discloses a kind of self-destroying vacuum safety syringe, comprise injection tube and injection rod, front end at injection rod is provided with piston, front end at injection tube is equipped with the needle stand that is fixed with syringe needle, this needle stand has the liquid-through hole that can be communicated with syringe needle and injection tube, injection rod is the tubular hollow stem, in injection rod, be plugged with the vacuum push rod, front end at injection rod is equipped with seal nipple, injection rod forms vacuum chamber between seal nipple and vacuum push rod, be provided with between seal nipple and the needle stand and when injection rod is pushed into the injection tube front end, can make seal nipple and the joining draw bail of needle stand, be provided with the position limiting structure that when injection rod is pushed into the injection tube desired location, can make vacuum push rod axial location between vacuum push rod and the injection tube.
In when injection, after pushing away before the injection rod and injection all having been injected, injection rod just is pushed into the injection tube front end.At this moment, the seal nipple of the front end of injection rod links by draw bail with the needle stand that is fixed with syringe needle, position limiting structure makes the vacuum push rod fixing not with the injection rod reach, and the air pressure in the injection rod diminishes and just seal nipple and the needle stand that is linked together together is inhaled into injection rod under the atmospheric effect outside.
There is following shortcoming in this technology: 1. accessory is more, and the structure of vacuum push rod and injection rod is comparatively complicated, and cost is higher; 2. assembling is complicated, when especially the injection rod of this product assembles, need at first by thimble seal nipple to be advanced into front end at injection rod from the afterbody of injection rod, again the vacuum push rod is inserted in the injection rod, and the vacuum push rod is advanced into the front end of injection rod by the mode of setting from the afterbody of injection rod, the vacuum of pulling back again push rod rotation vacuum push rod to the certain distance, make lower end and the position limiting structure clamping of vacuum push rod, and because its complicated assembling process, the special-purpose make-up machinery reliability of designing is relatively poor, is difficult to large-scale production, only manually assembles with adopting, all assembling process all need manually carry out, and are larger to staff's burden; 3. technology itself is partially complicated, performance difficulty, and cost is higher, and the market acceptance is relatively poor, is difficult to promote, and practicality is not high.
Summary of the invention
In order to overcome above shortcomings part in the prior art, it is a kind of simple in structure, safe and reliable that the purpose of this utility model is to provide, and cost is lower, and practicality is good, the vapour-pressure type retraction self-destroyed syringe of easily accepting for market.
In order to reach above-mentioned purpose, this utility model adopts following concrete technical scheme:
A kind of vapour-pressure type retraction self-destroyed syringe, comprise injection tube, the hollow injection rod of tubular, needle stand, sealing ring, piston and seal nipple, the central authorities of needle stand are provided with syringe needle, needle stand is installed in the front end of injection tube by the sealing ring that is sleeved on its lower end, piston bush is located at the outside of injection rod front end, seal nipple is arranged on the inboard of injection rod front end, seal nipple and needle stand are provided with the draw bail of working in coordination, when described injection rod is pushed into the front end of described injection tube, the outer wall hermetic seal of the inwall of injection tube front end and needle stand front end, be provided with the stopping means that stops seal nipple and needle stand to penetrate from the injection rod lower end on the injection rod inwall, the injection rod lower end is provided with links up injection rod inner chamber and extraneous steam vent.
The bottom of above-mentioned needle stand outwards convexes to form limit base, and ring set is on limit base and make needle stand outer wall and the hermetic seal of injection tube inwall, and the internal diameter of sealing ring is greater than the external diameter of the needle stand of limit base upside.
Above-mentioned stopping means has two, is separately positioned on injection rod middle part and bottom, and described stopping means is three road convex tendons on the injection rod inwall.
Above-mentioned steam vent comprises the more than one air-vent that is arranged on the injection rod lower sides.
The concrete structure of the outer wall hermetic seal of the inwall of above-mentioned injection tube front end and needle stand front end is: the front end of injection tube radially inside contracts the formation bayonet socket, is provided with the inclined-plane on the inwall of bayonet socket; The needle stand front end radially inside contracts the formation step and with chamfered transition, the inclined-plane on the step and the inclined-plane on the bayonet socket mate.
Compared with prior art, the utlity model has following outstanding advantages and effect:
1, accessory of the present utility model is less, injection tube front end and the hermetic seal of needle stand front end, and the needle stand lower end need not the vacuum push rod by sealing ring and the hermetic seal of injection tube inwall, and the structure of injection rod is more succinct, and machine-shaping is easy, low cost of manufacture.
2, assembling of the present utility model is simple, directly seal nipple is pushed into the end of injection rod from the afterbody of injection rod by thimble, can finish the number of assembling steps of injection rod, and it is easy and simple to handle, can assemble by machine automatization, and staff's labor intensity is less.
3, injection tube front end of the present utility model radially inside contracts the formation bayonet socket, be provided with the inclined-plane on the inwall of bayonet socket, the needle stand front end radially inside contracts and form to form step and with chamfered transition, inclined-plane on the step and the coupling of the inclined-plane on the bayonet socket, if during the syringe assembling, there are small gap in needle stand leading section and injection tube front inner wall, when injection rod is pushed into the front end of injection tube, seal nipple at first contacts needle stand, make needle stand be subject to power upwards and hold out against end at injection tube, so that the hermetic seal of injection tube front end and needle stand front end is reliable.
4, the step of self-destruction of the present utility model was divided into for two steps, when the first step, injection rod were pushed into the front end of injection tube, seal nipple at first contacted and connects needle stand, also there are certain gap in the leading section of injection rod and sealing ring downside, press injection rod seal nipple and injection rod are become flexible; Second step, front inject Rhizoma Belamcandae and with sealing ring top from needle stand, make medical personnel can use less power can finish self-destruction, simultaneously, reduced the required air compressing degree of self-destruction, self-destruction is more prone to, reliable.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the A place enlarged drawing of Fig. 1.
Fig. 3 is explosive view of the present utility model.
Fig. 4 is the schematic diagram after this utility model self-destruction.
Fig. 5 is the B-B view of the injection tube of Fig. 3.
Fig. 6 is the injection tube front end of Fig. 3 and the schematic diagram of needle stand front end hermetic seal.
The specific embodiment
Shown in Fig. 1-6, a kind of vapour-pressure type retraction self-destroyed syringe, comprise injection tube 4, the hollow injection rod 3 of tubular, needle stand 5, sealing ring 6, piston 8 and seal nipple 7, the central authorities of needle stand 5 are provided with syringe needle 2, needle stand 5 is installed in the front end of injection tube 4 by the sealing ring 6 that is sleeved on its lower end, piston 8 is set in the outside of injection rod 3 front ends, seal nipple 7 is arranged on the inboard of injection rod 3 front ends, seal nipple 7 and needle stand 5 are provided with the draw bail of working in coordination, when described injection rod 3 is pushed into the front end of described injection tube 4, the outer wall hermetic seal of the inwall of injection tube 4 front ends and needle stand 5 front ends, be provided with the stopping means 31 that stops seal nipple 7 and needle stand 5 under the air that compressed air discharges can act on, to penetrate from injection rod 3 lower ends on injection rod 3 inwalls, injection rod 3 lower ends are provided with links up injection rod 3 inner chambers and extraneous steam vent 33, and steam vent 33 comprises the more than one air-vent that is arranged on injection rod 3 lower sides.
In the present embodiment, during fitting tight joint 7, be pushed into the top of injection rod from the bottom of injection rod 3, then, when medical personnel used syringe, its finger was by on the through hole (the lower edge of injection rod inner chamber) of injection rod 3 lower ends, when namely pushing away liquid and self-destruction, injection rod 3 inner chambers and not conducting of the external world, thereby need to offer again in the bottom of injection rod 3 air-vent and link up with extraneous.
The bottom of above-mentioned needle stand 5 outwards convexes to form limit base 51, and sealing ring 6 is sleeved on the limit base 51 and makes needle stand 5 outer walls and injection tube 4 inwall hermetic seals, and the internal diameter of sealing ring 6 is greater than the external diameter of the needle stand 5 of limit base 51 upsides.
Above-mentioned stopping means 31 has two, be separately positioned on injection rod 3 middle parts and bottom, described stopping means 31 is three road convex tendons on injection rod 3 inwalls, three road convex tendons form two caulking grooves, the flange 72 of seal nipple 7 bottoms embeds one of them caulking groove under effect of inertia, the stopping means 31 of injection rod 3 bottoms mainly has been safety effect.The flange 72 of seal nipple 7 cooperates with stopping means 31, guarantees that residual liquid medicine can not walk back, and makes again needle point 2 can not expose injection rod 3.
The concrete structure of the outer wall hermetic seal of the inwall of above-mentioned injection tube 4 front ends and needle stand 5 front ends is: the front end of injection tube 4 radially inside contracts and forms bayonet socket 41, is provided with inclined-plane 42 on the inwall of bayonet socket 41; Needle stand 5 front ends radially inside contract the formation step and with chamfered transition, inclined-plane 52 and the inclined-plane on the bayonet socket 41 42 on the step mate.The gradient on the inclined-plane 42 on the inclined-plane 52 on the step and the bayonet socket 41 is identical, this gradient can be in 0-60 ° any value, in the present embodiment: this gradient is got 45 °, it is better selection that gradient is 45 °.
The finger holder section 43 of injection tube 4 is provided with reinforcement, and the profile of reinforcement is apple shape or heart type.
Be provided with the spacing preiection 44 that cooperates with sealing ring 6 on the front inner wall of injection tube 4, spacing preiection 44 can guarantee that syringe sealing ring in mobile process can owing to more extraneous factors cause sealing ring 6 and needle stand 5 to move down, not guarantee the hermetic seal of needle stand 5 front ends and injection tube 4 front inner wall.
Operation principle of the present utility model: when injection rod 3 is pushed into the front end of injection tube 4, seal nipple 7 at first contacts needle stand 5, to seal nipple 7 with after needle stand 5 connects, also there are certain gap in the leading section of injection rod 3 and sealing ring 6 downsides, inject Rhizoma Belamcandae 3 before continuing again, when making the front end face of injection rod 3 withstand on the downside of sealing ring 6, seal nipple 7 produces loosening with injection rod 3 under needle stand 5 effects, the internal diameter of sealing ring 6 is greater than the external diameter of the needle stand 5 of limit base 51 upsides, inject Rhizoma Belamcandae 3 before continuing again with the limit base 51 of sealing ring 6 tops from needle stand 5, at this moment, the Compressed Gas release pressure of injection tube 4 front ends, needle stand 5 and seal nipple 7 are pushed injection rod 3 inner chambers, embed in the stopping means 31 of injection rod 3 inwalls under flange 72 effect of inertia of seal nipple 7.
During the syringe assembling, needle stand 5 leading sections and injection tube 4 front inner wall may be because there be small gap (needle stand 5 does not push up fully and puts in place) in staff's carelessness, when injection rod 3 is pushed into the front end of injection tube 4, seal nipple 7 at first contacts needle stand 5, make needle stand 5 be subject to power upwards and hold out against in the end of injection tube 4, so that the hermetic seal of injection tube 4 front ends and needle stand 5 front ends is reliable.
It should be noted that at last: above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although with reference to preferred embodiment this utility model is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (5)
1. vapour-pressure type retraction self-destroyed syringe, comprise injection tube, the hollow injection rod of tubular, needle stand, sealing ring, piston and seal nipple, the central authorities of needle stand are provided with syringe needle, needle stand is installed in the front end of injection tube by the sealing ring that is sleeved on its lower end, piston bush is located at the outside of injection rod front end, seal nipple is arranged on the inboard of injection rod front end, seal nipple and needle stand are provided with the draw bail of working in coordination, it is characterized in that: when described injection rod is pushed into the front end of described injection tube, the outer wall hermetic seal of the inwall of injection tube front end and needle stand front end, be provided with the stopping means that stops seal nipple and needle stand to penetrate from the injection rod lower end on the injection rod inwall, the injection rod lower end is provided with links up injection rod inner chamber and extraneous steam vent.
2. a kind of vapour-pressure type retraction self-destroyed syringe according to claim 1, it is characterized in that: the bottom of described needle stand outwards convexes to form limit base, ring set is on limit base and make needle stand outer wall and the hermetic seal of injection tube inwall, and the internal diameter of sealing ring is greater than the external diameter of the needle stand of limit base upside.
3. a kind of vapour-pressure type retraction self-destroyed syringe according to claim 1, it is characterized in that: described stopping means has two, is separately positioned on injection rod middle part and bottom, and described stopping means is three road convex tendons on the injection rod inwall.
4. a kind of vapour-pressure type retraction self-destroyed syringe according to claim 1, it is characterized in that: described steam vent comprises the more than one air-vent that is arranged on the injection rod lower sides.
5. each described a kind of vapour-pressure type retraction self-destroyed syringe according to claim 1-4, it is characterized in that: the concrete structure of the outer wall hermetic seal of the inwall of described injection tube front end and needle stand front end is: the front end of injection tube radially inside contracts the formation bayonet socket, is provided with the inclined-plane on the inwall of bayonet socket; The needle stand front end radially inside contracts the formation step and with chamfered transition, the inclined-plane on the step and the inclined-plane on the bayonet socket mate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220311787 CN202666124U (en) | 2012-06-30 | 2012-06-30 | Pneumatic retractable self-destruction syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220311787 CN202666124U (en) | 2012-06-30 | 2012-06-30 | Pneumatic retractable self-destruction syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202666124U true CN202666124U (en) | 2013-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220311787 Expired - Fee Related CN202666124U (en) | 2012-06-30 | 2012-06-30 | Pneumatic retractable self-destruction syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202666124U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102698346A (en) * | 2012-06-30 | 2012-10-03 | 蔡根顺 | Air-pressure-type retraction self-destruction syringe |
| CN103405237A (en) * | 2013-09-02 | 2013-11-27 | 蔡根顺 | Blood taking device, dedicated needle thereof and assembling type blood taking needle |
-
2012
- 2012-06-30 CN CN 201220311787 patent/CN202666124U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102698346A (en) * | 2012-06-30 | 2012-10-03 | 蔡根顺 | Air-pressure-type retraction self-destruction syringe |
| WO2014000504A1 (en) * | 2012-06-30 | 2014-01-03 | Cai Genshun | Pneumatic retractable self-destructing injection device |
| CN103405237A (en) * | 2013-09-02 | 2013-11-27 | 蔡根顺 | Blood taking device, dedicated needle thereof and assembling type blood taking needle |
| CN103405237B (en) * | 2013-09-02 | 2015-10-07 | 蔡根顺 | A kind of hemostix, hemostix special needle and packaging blood taking 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: HE'NAN SHUGUANG JIANSHI MEDICAL EQUIPMENT GROUP CO Free format text: FORMER OWNER: CAI GENSHUN Effective date: 20150416 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 318020 TAIZHOU, ZHEJIANG PROVINCE TO: 462331 LUOHE, HENAN PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150416 Address after: Luohe City, Henan province 462331 Yuanhui District Riverside Metro Xiangjiang Road Patentee after: Henan Shugang Jianshi Medical Devices Group Co., Ltd. Address before: 318020 Taizhou Province, Huangyan District, the new front street village village, No. 245 Patentee before: Cai Genshun |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160707 Address after: 315500 Zhejiang city of Fenghua province Jiangkou private science and Technology Park (decursivum) Patentee after: Zhejiang Jinyuan Medical Instrument Technology Co., Ltd. Address before: Luohe City, Henan province 462331 Yuanhui District Riverside Metro Xiangjiang Road Patentee before: Henan Shugang Jianshi Medical Devices Group Co., Ltd. |
|
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20180301 Granted publication date: 20130116 |
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| PD01 | Discharge of preservation of patent |
Date of cancellation: 20180607 Granted publication date: 20130116 |
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| PD01 | Discharge of preservation of patent | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180626 Address after: 315500 Fenghua District Private Science and Technology Park in Ningbo, Zhejiang Patentee after: Ningbo Li Long rubber & Plastics Co., Ltd. Address before: 315500 Jiangkou Private Science Park, Fenghua, Zhejiang (Qian Hu) Patentee before: Zhejiang Jinyuan Medical Instrument Technology Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180809 Address after: 318020 No. 255, Xicheng village, Xicheng street, Huangyan District, Taizhou, Zhejiang Patentee after: Hong Mingwan Address before: 315500 Fenghua District Private Science and Technology Park in Ningbo, Zhejiang Patentee before: Ningbo Li Long rubber & Plastics Co., Ltd. |
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| TR01 | Transfer of patent right | ||
| 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: 20130116 Termination date: 20210630 |