CN204170221U - A kind of self-destroy safety injector - Google Patents
A kind of self-destroy safety injector Download PDFInfo
- Publication number
- CN204170221U CN204170221U CN201420616301.2U CN201420616301U CN204170221U CN 204170221 U CN204170221 U CN 204170221U CN 201420616301 U CN201420616301 U CN 201420616301U CN 204170221 U CN204170221 U CN 204170221U
- Authority
- CN
- China
- Prior art keywords
- holder
- urceolus
- push rod
- needle
- self
- 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 - Lifetime
Links
- 239000012634 fragment Substances 0.000 claims description 11
- 238000007789 sealing Methods 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 4
- 239000000284 extract Substances 0.000 description 3
- 210000000883 ear external Anatomy 0.000 description 2
- 241001411320 Eriogonum inflatum Species 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
A kind of self-destroy safety injector, it comprises urceolus (2), push rod (1), piston (3), holder (4) and entry needle, and entry needle comprises needle tubing (8), needle stand (7) and needle shield (9); The inner chamber of expanding channels needle tubing (8) and urceolus (2) is provided with in needle stand (7); The rear end being located at the holder (4) of urceolus (2) is the closure (45) mated with the locking part of push rod (1), and front end is fixedly connected with the rear end of needle stand (7); It is characterized in that: be provided with the inner seal ring (6) that ring fill in the fixed connection place of the rear end of holder (4) and needle stand (7), be provided with at the contact surface of holder (4) and urceolus (2) exterior seal ring (5) that ring fills.The beneficial effects of the utility model, compared to the prior art, are provided with the inner seal ring that ring fills, increase its sealing, prevent because variation of ambient temperature causes its Material shrinkage to differ and occur poorly sealed leakage in the fixed connection place of the rear end of holder and needle stand.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments syringe, is specifically related to a kind of self-destroy safety injector.
Background technology
Now use a kind of self-destroy safety injector socially more, but there is a lot of defect, the utility model (application number is 200520000284.0) of such as title " self-destroy safety injector ", it comprises urceolus, push rod, piston, holder, entry needle; Entry needle is made up of needle stand, syringe needle, needle shield.It is characterized in that, be provided with cylindrical or conical joint portion after needle stand, middle part outer wall is provided with external ear, and anterior is the joint portion wanting with needle shield to coordinate; The anterior outer wall of holder is provided with some axially directed projections, its inwall is provided with the thread groove combined with needle stand external ear, rear benefit outer wall is provided with the sealing positioning combination portion that inner groovy anterior with urceolus matches, and inwall is provided with the joint portion of matching with needle stand rear portion and the locking part with push rod condensation; Because the interference fit at itself and needle stand rear portion is more tight, the center, front end of push rod is provided with the locking part sealed with holder, mutually locked integrally with holder after insertion holder is sealed, pull back push rod time, entry needle and holder retract in urceolus thereupon.
But it has following deficiency: one, holder inwall and needle stand rear portion interference fit seal; Two, holder and the anterior little inner diameter portion of urceolus seal by interference fit, and sealing effectiveness is bad, the bad use of product, in addition, holder is not tight with coordinating of its urceolus, when pin puncture medicine bottle stopper, when holder is easy to rollback, causes and cannot extract medicinal liquid.
Utility model content
The purpose of this utility model is to provide one can make holder inwall and needle stand rear seal, and the annular groove of the anterior little inner diameter portion of holder and urceolus and exterior seal ring can be made again to coordinate a kind of self-destroy safety injector closely.
The technical solution of the utility model is:
A kind of self-destroy safety injector, it comprises urceolus 2, push rod 1, piston 3, holder 4 and entry needle, and entry needle comprises needle tubing 8, needle stand 7 and needle shield 9; The inner chamber of expanding channels needle tubing 8 and urceolus 2 is provided with in needle stand 7; Be located at the piston 3 of the middle part stationary ring of the push rod 1 in the inner chamber of urceolus 2, front end is locking part; The rear end being located at the holder 4 of urceolus 2 is the closure 45 mated with the locking part of push rod 1, and front end is fixedly connected with the rear end of needle stand 7; It is characterized in that: be provided with the inner seal ring 6 that ring fill in holder 4 and the fixed connection place of the rear end of needle stand 7, be provided with at the contact surface of holder 4 and urceolus 2 exterior seal ring 5 that ring fills.
Described holder 4 is provided with the groove 42 of ring dress, and exterior seal ring 5 is enclosed within groove 42.
The rear end of described needle stand 7 is beloid bullet, between the rearmost end and holder 4 of bullet, be provided with inner seal ring 6.
Described holder 4 is provided with at least one flange collar with the contact surface of bullet, and the correspondence position of bullet is provided with the equal scrobicular ring mated with this flange collar of quantity.
The locking part of described push rod 1 is provided with at least one elastic shell fragment 12, and shell fragment 12 only front end connects locking part, and the rear end of shell fragment 12 is greater than the distance of its front end to locking part central shaft to the distance of locking part central shaft.
Double baffle plate 14 before and after described push rod 1 is provided with, piston 3 be close to front apron 14 be looped around it before push rod 1 on, at the push rod 1 contact surface place with piston 3, be provided with annular projection 13.
The rear side of described backboard 14 is provided with weak area 15.
Described holder 4 is provided with the first guide protrusions 41 of axial direction; The front end of urceolus 2 is provided with little internal diameter, is provided with the second guide protrusions 22 and the annular groove in its rear 23 of axis direction in little internal diameter;
Second guide protrusions 22 and the spaced distribution of the first guide protrusions 41.
Described push rod 1 be banking stop 11 by hands rear portion; Crossed Circle projection 21 is provided with at the rear portion of urceolus 2.
The beneficial effects of the utility model, compared to the prior art, are provided with the inner seal ring that ring fills, increase its sealing, prevent because variation of ambient temperature causes its Material shrinkage to differ and occur poorly sealed leakage in the fixed connection place of the rear end of holder and needle stand; Be provided with annular groove and exterior seal ring at the little inner diameter portion of holder and urceolus, increase its frictional force and sealing, when preventing piercing vials, holder rollback, causes and cannot extract medicinal liquid, reduces the unnecessary burden in medical personnel's work.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is using state schematic diagram of the present utility model (in push rod propelling).
Fig. 3 is using state schematic diagram (when push rod is advanced to the end) of the present utility model.
Fig. 4 is using state schematic diagram (push rod is return) of the present utility model.
Fig. 5 is the enlarged diagram of push rod locking part when not using.
Fig. 6 is the enlarged diagram of the push rod locking part of push rod when being advanced to the end.
Fig. 7 is the enlarged diagram of the exterior seal ring position of holder.
Detailed description of the invention
As shown in Figure 1 and Figure 5, a kind of self-destroy safety injector it comprise urceolus 2, push rod 1, piston 3, holder 4 and entry needle, entry needle comprises needle tubing 8, needle stand 7 and needle shield 9.The inner chamber of expanding channels needle tubing 8 and urceolus 2 is provided with in needle stand 7.Be located at the piston 3 of the middle part stationary ring of the push rod 1 in the inner chamber of urceolus 2, front end is locking part.The rear end being located at the holder 4 of urceolus 2 is the closure 45 mated with the locking part of push rod 1, and front end is fixedly connected with the rear end of needle stand 7.Needle tubing 8 is fixedly connected with the front end of needle stand 7.Be provided with the inner seal ring 6 that ring fill in holder 4 and the fixed connection place of the rear end of needle stand 7, be provided with at the contact surface of holder 4 and urceolus 2 exterior seal ring 5 that ring fills.Arranging exterior seal ring 5 is make the sealing effectiveness between holder 4 and urceolus 2 better, and arranging inner seal ring 6 is the fixing more firm of the rear end of holder 4 and needle stand 7, and double its sealing effectiveness that makes is better.
As shown in figure 5 and figure 7, holder 4 is provided with the groove 42 of ring dress, and exterior seal ring 5 is enclosed within groove 42.
As shown in Figure 5, the rear end of needle stand 7 is beloid bullet, between the rearmost end and holder 4 of bullet, be provided with inner seal ring 6.
As shown in figure 5 and figure 7, holder 4 is provided with the first guide protrusions 41 of axial direction.
As shown in Figure 5, at least one flange collar is provided with at holder 4 and the contact surface of bullet.
As shown in Figure 5, the locking part of push rod 1 is provided with at least one elastic shell fragment 12, and shell fragment 12 only front end connects locking part, and the rear end of shell fragment 12 is greater than the distance of its front end to locking part central shaft to the distance of locking part central shaft.
As shown in Figure 5, double baffle plate 14 before and after push rod 1 is provided with, piston 3 be close to front apron 14 be looped around it before push rod 1 on, at the push rod 1 contact surface place with piston 3, be provided with annular projection 13, increase the tightness between piston 3 and push rod 1, urceolus 2.
As shown in Figure 5, the rear side of backboard 14 is provided with weak area 15.
As shown in Figure 1, push rod 1 is banking stop 11 by hands rear portion.Crossed Circle projection 21 is provided with at the rear portion of urceolus 2.
As shown in Figure 4, the front end of urceolus 2 is provided with little internal diameter, is provided with the second guide protrusions 22 and the annular groove in its rear 23 of axis direction in little internal diameter.They are guiding for holder 4 and Fixed Design, the second guide protrusions 22 and the spaced distribution of the first guide protrusions 41.
Operation principle of the present utility model:
As depicted in figs. 1 and 2, of the present utility model the same with ordinary syringe when being used in beginning, removing banking stop 11, takes out needle shield 9, extracts medicinal liquid, gets rid of gas in urceolus, and pressing push rod presses hands, is discharged by the medicinal liquid of urceolus 2 from needle tubing 8.
As shown in Figure 3 and Figure 6, when the closure 45 of the locking part propelling holder 4 of push rod 1, shell fragment 12 rear end of locking part is shunk to the axis direction of locking part, makes locking part all by closure 45, and shell fragment 12 rear end is opened reinstatement and is fastened on closure 45 and is fixed.
As shown in Figure 4, with pulling pushback pin 1, holder 4, needle stand 7, needle tubing 8 move backward.When baffle plate 14 moves to Crossed Circle projection 21 place, fractureed by push rod 1 from weak area 15, syringe just can not have been reused by destroying.
Above-described is only preferred implementation of the present utility model; it should be pointed out that for a person skilled in the art, do not departing under this utility model general idea prerequisite; can also make some changes and improvements, these also should be considered as protection domain of the present utility model.
Claims (10)
1. a self-destroy safety injector, it comprises urceolus (2), push rod (1), piston (3), holder (4) and entry needle, and entry needle comprises needle tubing (8), needle stand (7) and needle shield (9); The inner chamber of expanding channels needle tubing (8) and urceolus (2) is provided with in needle stand (7); Be located at the piston (3) of the middle part stationary ring of the push rod (1) in the inner chamber of urceolus (2), front end is locking part; The rear end being located at the holder (4) of urceolus (2) is the closure (45) mated with the locking part of push rod (1), and front end is fixedly connected with the rear end of needle stand (7); It is characterized in that: be provided with the inner seal ring (6) that ring fill in the fixed connection place of the rear end of holder (4) and needle stand (7), be provided with at the contact surface of holder (4) and urceolus (2) exterior seal ring (5) that ring fills.
2. self-destroy safety injector as claimed in claim 1, is characterized in that: described holder (4) is provided with the groove (42) of ring dress, and exterior seal ring (5) is enclosed within groove (42).
3. self-destroy safety injector as claimed in claim 1, is characterized in that: the rear end of described needle stand (7) is beloid bullet, between the rearmost end and holder (4) of bullet, is provided with inner seal ring (6).
4. self-destroy safety injector as claimed in claim 1, is characterized in that: described holder (4) is provided with at least one flange collar with the contact surface of bullet.
5. self-destroy safety injector as claimed in claim 1, it is characterized in that: the locking part of described push rod (1) is provided with at least one elastic shell fragment (12), shell fragment (12) only front end connects locking part, and the rear end of shell fragment (12) is greater than the distance of its front end to locking part central shaft to the distance of locking part central shaft.
6. self-destroy safety injector as claimed in claim 1, it is characterized in that: double baffle plate (14) before and after described push rod (1) is provided with, piston (3) be close to front apron (14) be looped around it before push rod (1) on, at the contact surface place of push rod (1) with piston (3), be provided with annular projection (13).
7. self-destroy safety injector as claimed in claim 6, is characterized in that: the rear side of described backboard (14) is provided with weak area (15).
8. self-destroy safety injector as claimed in claim 1, is characterized in that: described holder (4) is provided with first guide protrusions (41) of axial direction; The front end of urceolus (2) is provided with little internal diameter, is provided with second guide protrusions (22) of axis direction and annular groove in its rear (23) in little internal diameter.
9. self-destroy safety injector as claimed in claim 8, is characterized in that: described second guide protrusions (22) and the first guide protrusions (41) spaced distribution.
10. the self-destroy safety injector as described in claim as arbitrary in claim 1-9, is characterized in that: described push rod (1) be banking stop (11) by hands rear portion; Crossed Circle projection (21) is provided with at the rear portion of urceolus (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420616301.2U CN204170221U (en) | 2014-10-23 | 2014-10-23 | A kind of self-destroy safety injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420616301.2U CN204170221U (en) | 2014-10-23 | 2014-10-23 | A kind of self-destroy safety injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204170221U true CN204170221U (en) | 2015-02-25 |
Family
ID=52559066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420616301.2U Expired - Lifetime CN204170221U (en) | 2014-10-23 | 2014-10-23 | A kind of self-destroy safety injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204170221U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106668989A (en) * | 2015-11-10 | 2017-05-17 | C-La中国有限公司 | Retractable syringe |
-
2014
- 2014-10-23 CN CN201420616301.2U patent/CN204170221U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106668989A (en) * | 2015-11-10 | 2017-05-17 | C-La中国有限公司 | Retractable syringe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160420 Address after: Luohe City, Henan province 462331 Yuanhui District Riverside Metro Xiangjiang Road Patentee after: Henan Shuguang qualied Kang biological Polytron Technologies Inc Address before: Luohe City, Henan Province, Riverside Metro Xiangjiang road 462331 Patentee before: Henan Shugang Jianshi Medical Devices Group Co., Ltd. |