CN204147359U - Residue-free injector - Google Patents
Residue-free injector Download PDFInfo
- Publication number
- CN204147359U CN204147359U CN201420576179.0U CN201420576179U CN204147359U CN 204147359 U CN204147359 U CN 204147359U CN 201420576179 U CN201420576179 U CN 201420576179U CN 204147359 U CN204147359 U CN 204147359U
- Authority
- CN
- China
- Prior art keywords
- piston
- syringe
- conical head
- residue
- core bar
- 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
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 3
- 230000002787 reinforcement Effects 0.000 claims description 6
- 244000043261 Hevea brasiliensis Species 0.000 claims description 5
- 239000004743 Polypropylene Substances 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 229920003052 natural elastomer Polymers 0.000 claims description 5
- 229920001194 natural rubber Polymers 0.000 claims description 5
- -1 polypropylene Polymers 0.000 claims description 5
- 229920001155 polypropylene Polymers 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 8
- 239000003640 drug residue Substances 0.000 abstract description 2
- 239000003814 drug Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- 230000009965 odorless effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009967 tasteless effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
This utility model relates to medical apparatus technical field, particularly relates to residue-free injector.By syringe, be arranged on the core bar in syringe, be socketed in the needle stand of back end of syringe, and be arranged on the entry needle in needle stand endoporus; It is characterized in that, described back end of syringe edge stretches out formation conical head, and the cone-shaped cavity shape of this conical head and needle stand front end matches, both blind-mate; Core bar end sleeve in described syringe is connected to piston, and this piston and syringe inwall are slidably matched; Described piston stretches out away from an end margin of core bar and forms piston conical head, this piston conical head and piston one-body molded, and piston conical head and conical head inwall are slidably matched; Make residue-free injector effectively can reduce drug residue liquid in syringe.
Description
Technical field
This utility model relates to medical apparatus technical field, particularly relates to residue-free injector.
Background technology
Syringe is made up of the foraminate syringe of front end band and the piston core bar that matches, and syringe is used for a small amount of liquid or its to be injected into region that other method cannot be close or locally extracts out from those; When injector to inject, the spout district that syringe has one section of piston to arrive near one end of entry needle, this section of region often produces debris; But costly, the generation of debris not only wastes resource to the liquid medicine of injection class, contaminated environment at present, and makes the injection volume of patient not enough, affects the therapeutic effect of medicine; A kind of syringe is had to add inserting column in core bar front end at present, to make inserting column can stretch into spout district, medicine residual for spout district internal face is released, but this syringe is directly connected with core bar, cause that piston is installed in junction comparatively difficult, and easily produce leakage problem.
Utility model content
The purpose of this utility model is to provide a kind of residue-free injector that effectively can reduce drug residue liquid in syringe.
The technical solution of the utility model is as follows:
Residue-free injector, comprises syringe, the core bar arranged in syringe, the needle stand of back end of syringe socket, and the entry needle installed in needle stand endoporus; Described back end of syringe edge stretches out formation conical head, and the cone-shaped cavity shape of this conical head and needle stand front end matches, both blind-mate; Core bar end sleeve in described syringe is connected to piston, and this piston and syringe inwall are slidably matched; Described piston stretches out away from one end of core bar and forms piston conical head, this piston conical head and piston one-body molded, and piston conical head and conical head inwall are slidably matched.
Described core bar is made up of the body of rod, the bar head being socketed with piston and the boosting dish that is arranged on lever front end, and the body of rod, bar head and boosting dish are one-body molded, and its king-rod head external diameter is less than body of rod external diameter; Described bar head rear end is provided with outwardly retaining ring.By arranging retaining ring, to make the bar head between retaining ring and the body of rod become low ebb between the two, be conducive to, by piston stuck fast, avoiding it to drop; By arranging boosting dish, be conducive to operator's hand push.
Described needle stand outer cover is connected to the needle guard of protection entry needle.By arranging needle guard, avoid the pollution of entry needle.
The outer surface of revolution of described needle guard is evenly equipped with some reinforcements.By arranging reinforcement on the outer surface of revolution of needle guard, increasing the intensity of needle guard on the one hand, avoiding needle guard be squeezed in transportation and damage.
Described piston and piston conical head all adopt natural rubber.Adopt natural rubber good sealing effect, and can avoid reacting with medicine.
Described syringe and core bar all adopt the molding of medical radiation tolerant polypropylene material injection.Because polypropylene is nontoxic, odorless, tasteless, effectively avoid reacting with medicine.
The beneficial effects of the utility model are: by being socketed on conical head by the cone-shaped cavity of needle stand front end, realize the connection of syringe and needle stand; Because cone-shaped cavity and conical head are pyramidal structure, liquid can be made on the one hand to flow into syringe needle quicker, the contact surface of conical head and cone-shaped cavity can be made to fit tightly on the other hand, prevent the seepage of liquid and the landing of needle stand; By arranging piston conical head, when syringe uses, piston conical head can stretch in conical head, reduces to minimum to make the debris in conical head.
Accompanying drawing explanation
By the detailed description below in conjunction with accompanying drawing, aforesaid and other object, the feature and advantage of this utility model will become apparent.
Wherein: Fig. 1 is this utility model structural representation;
Fig. 2 is this utility model reinforcing rib structure schematic diagram;
Fig. 3 is this utility model circular groove structure schematic diagram;
Fig. 4 is this utility model I portion enlarged diagram;
In accompanying drawing, 1 is syringe, and 3 is needle stand, and 4 is entry needle, and 5 is conical head, and 6 is piston, and 7 is piston conical head, and 8 is the body of rod, and 9 is bar head, and 10 move back dish for helping, and 11 is retaining ring, and 12 is needle guard, and 13 is reinforcement, and 14 is annular groove, and 15 is through hole, 16 cone-shaped cavities.
Detailed description of the invention
Embodiment 1
Shown in Fig. 1-Fig. 2, residue-free injector, comprises syringe 1, the core bar arranged in syringe, the needle stand 3 of back end of syringe socket, and the entry needle 4 installed in needle stand endoporus; Described back end of syringe edge stretches out and forms conical head 5, and cone-shaped cavity 16 shape of this conical head and needle stand front end matches, both blind-mate; Core bar end sleeve in described syringe is connected to piston 6, and this piston and syringe inwall are slidably matched; Described piston stretches out away from one end of core bar and forms piston conical head 7, this piston conical head and piston one-body molded, and piston conical head and conical head inwall are slidably matched.
By being socketed on conical head by the cone-shaped cavity of needle stand front end, realize the connection of syringe and needle stand; Because cone-shaped cavity and conical head are pyramidal structure, liquid can be made on the one hand to flow into syringe needle quicker, the contact surface of conical head and cone-shaped cavity can be made to fit tightly on the other hand, prevent the seepage of liquid and the skidding of needle stand; By arranging piston conical head, when syringe uses, piston conical head can stretch in conical head, reduces to minimum to make the debris in conical head.
Embodiment 2
On the basis of embodiment 1, described core bar is made up of the body of rod 8, the bar head 9 being socketed with piston and the boosting dish 10 that is arranged on lever front end, and the body of rod, bar head and boosting dish are one-body molded, and its king-rod head external diameter is less than body of rod external diameter; Described bar head rear end is provided with retaining ring 11.By arranging retaining ring, to make the bar head between retaining ring and the body of rod become low ebb between the two, be conducive to, by piston stuck fast, avoiding it to drop; By arranging boosting dish, be conducive to operator's hand push.
Embodiment 3
On the basis of embodiment 2, described needle stand outer cover is connected to the needle guard 12 of protection entry needle.By arranging needle guard, avoid the pollution of entry needle.
Embodiment 4
On the basis of embodiment 3, the outer surface of revolution of described needle guard is evenly equipped with some reinforcements 13.By arranging reinforcement on the outer surface of revolution of needle guard, increasing the intensity of needle guard on the one hand, avoiding needle guard be squeezed in transportation and damage, on the other hand when opening needle guard, increasing the frictional force between hand and needle guard, facilitating extracting of needle guard.
Embodiment 5
On the basis of embodiment 1, described piston and piston conical head all adopt natural rubber.Adopt natural rubber good sealing effect, and can avoid reacting with medicine.
Embodiment 6
On the basis of embodiment 1, described syringe and core bar all adopt the molding of medical radiation tolerant polypropylene material injection.Because polypropylene is nontoxic, odorless, tasteless, effectively avoid reacting with medicine.
Embodiment 7
On the basis of embodiment 1, the outer surface of revolution of described conical head is provided with annular groove 14; Described conical head opening is evenly equipped with some connection with annular groove and acclivitous through hole 15.Collect by arranging annular groove the debris flowed in conical head and space, needle stand contact position, debris is passed back in the cone-shaped cavity of needle stand by the through hole tilted again.
This utility model is not limited to described embodiment; those skilled in the art is not departing from spirit of the present utility model namely openly in scope; still can do some revise or change, therefore the scope that rights protection scope of the present utility model limits with claims is as the criterion.
Claims (6)
1. residue-free injector, comprises syringe, the core bar arranged in syringe, the needle stand of back end of syringe socket, and the entry needle installed in needle stand endoporus; It is characterized in that, described back end of syringe edge stretches out formation conical head, and the cone-shaped cavity shape of this conical head and needle stand front end matches, both blind-mate; Core bar end sleeve in described syringe is connected to piston, and this piston and syringe inwall are slidably matched; Described piston stretches out away from one end of core bar and forms piston conical head, this piston conical head and piston one-body molded, and piston conical head and conical head inwall are slidably matched.
2. residue-free injector according to claim 1, it is characterized in that, described core bar is made up of the body of rod, the bar head being socketed with piston and the boosting dish that is arranged on lever front end, and the body of rod, bar head and boosting dish are one-body molded, and its king-rod head external diameter is less than body of rod external diameter; Described bar head rear end is provided with outwardly retaining ring.
3. residue-free injector according to claim 1, is characterized in that, described needle stand outer cover is connected to the needle guard of protection entry needle.
4. residue-free injector according to claim 3, is characterized in that, the outer surface of revolution of described needle guard is evenly equipped with some reinforcements.
5. residue-free injector according to claim 1, is characterized in that, described piston and piston conical head all adopt natural rubber.
6. residue-free injector according to claim 1, is characterized in that, described syringe and core bar all adopt the molding of medical radiation tolerant polypropylene material injection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420576179.0U CN204147359U (en) | 2014-09-30 | 2014-09-30 | Residue-free injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420576179.0U CN204147359U (en) | 2014-09-30 | 2014-09-30 | Residue-free injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204147359U true CN204147359U (en) | 2015-02-11 |
Family
ID=52505516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420576179.0U Expired - Fee Related CN204147359U (en) | 2014-09-30 | 2014-09-30 | Residue-free injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204147359U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107812281A (en) * | 2017-11-17 | 2018-03-20 | 北京快舒尔医疗技术有限公司 | Needleless injector, needleless injector pencil and its piston rod |
-
2014
- 2014-09-30 CN CN201420576179.0U patent/CN204147359U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107812281A (en) * | 2017-11-17 | 2018-03-20 | 北京快舒尔医疗技术有限公司 | Needleless injector, needleless injector pencil and its piston rod |
| CN107812281B (en) * | 2017-11-17 | 2024-04-02 | 北京快舒尔医疗技术有限公司 | Needleless injector, needleless injector medicine tube and piston rod thereof |
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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 |
Granted publication date: 20150211 |