CN204600878U - A kind of injection needle device - Google Patents
A kind of injection needle device Download PDFInfo
- Publication number
- CN204600878U CN204600878U CN201520149817.5U CN201520149817U CN204600878U CN 204600878 U CN204600878 U CN 204600878U CN 201520149817 U CN201520149817 U CN 201520149817U CN 204600878 U CN204600878 U CN 204600878U
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- China
- Prior art keywords
- supervisor
- injection
- injection needle
- passing away
- tube wall
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Abstract
The utility model proposes a kind of injection needle device, comprise injection needle, injection needle comprises supervisor and side pipe, supervisor comprises injection canal, side pipe comprises first paragraph and second segment, first paragraph to be placed in injection canal and to abut in the inner side of the tube wall of supervisor, and second segment is outwardly through the tube wall of supervisor; Side pipe comprises passing away, and the water inlet of passing away is arranged on the tube wall of supervisor, and and have a preset distance between the outlet of injection canal; The discharge outlet of passing away is arranged on the end of second segment.A kind of injection needle device that this utility model provides, has channel structure, can carry out the real-time displacement of heavy water and balance saline, maintain stable intraocular pressure in ophthalmic surgical procedures.
Description
Technical field
This utility model relates to a kind of injection needle device, particularly relates to the injection needle device used in a kind of ophthalmic surgical procedures.
Background technology
In ophthalmic surgical procedures, the stable of intraocular pressure ensures without hemorrhage in operation process, avascular locking, uncomplicated key factor.In ophthalmic surgical procedures, there is an important step to be substitute original balance saline by heavy water implantation glass body cavity.Under traditional approach, when adopting conventional needles to inject heavy water, first inject a small amount of heavy water, after intraocular pressure raises, need change glass crop into and stretch into ophthalmic and carry out cutting suction, after maintaining original intraocular pressure, reinject a small amount of heavy water, and repeatedly aforementioned operation just can complete required heavy water and injects repeatedly.In this process, add the wound of ocular tissue, intraocular pressure recurrent fluctuations, increase the risk of postoperative complication.How many liquid will be discharged the while that ophthalmic injecting how many liquid in principle, and stable intraocular pressure could be maintained, therefore, need special injection needle, and the displacement of heavy water and balance saline can be carried out in ophthalmic surgical procedures, maintain stable intraocular pressure all the time.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of injection needle device, can carry out the real-time displacement of heavy water and balance saline, maintain stable intraocular pressure in ophthalmic surgical procedures.
A kind of injection needle device of the present utility model, comprise injection needle, comprise supervisor and side pipe, described supervisor comprises injection canal, described side pipe comprises first paragraph and second segment, described first paragraph to be placed in described injection canal and to abut in the inner side of the tube wall of described supervisor, and described second segment is outwardly through the tube wall of described supervisor; Described side pipe comprises passing away, and the water inlet of described passing away is arranged on the tube wall of described supervisor, and and have a preset distance between the outlet of described injection canal; The discharge outlet of described passing away is arranged on the end of described second segment.
Preferably, the ratio of the cross-sectional area of described passing away and the cross-sectional area of described injection canal is 0.4 ~ 1.
Preferably, the value of the preset distance between the water inlet of described passing away and the outlet of described injection canal is 1 ~ 3mm.
Preferably, the discharge outlet of described passing away protrudes the vertical height of the tube wall of described supervisor is 1 ~ 4mm.
Preferably, the outlet of described injection canal is angular cut, and ellipsoidal cross section.
A kind of injection needle apparatus structure of the present utility model is simple, by the nested designs of outer tube and side pipe, can carry out the displacement of heavy water and balance saline in time, maintain stable intraocular pressure in ophthalmic surgical procedures.
Accompanying drawing explanation
Comprising accompanying drawing is further understand this utility model for providing, and they are included and form a application's part, and accompanying drawing shows embodiment of the present utility model, and plays the effect explaining this utility model principle together with this description.In accompanying drawing:
Fig. 1 shows the structural representation of the injection needle device of a kind of embodiment of the present utility model.
Fig. 2 shows the structural representation of injection needle device in ophthalmologic operation of a kind of embodiment of the present utility model.
Detailed description of the invention
With detailed reference to accompanying drawing, embodiment of the present utility model is described now.In the case of any possible, in all of the figs the identical labelling of use is represented same or analogous part.In addition, although the term used in this utility model selects from public term, but some terms mentioned in this utility model description may be that applicant selects by his or her judgement, its detailed meanings illustrates in the relevant portion of description herein.In addition, require not only to pass through used actual terms, but the meaning that also will be contained by each term understands this utility model.
Fig. 1 shows the structural representation of the injection needle device of a kind of embodiment of the present utility model.
As shown in Figure 1, injection needle comprises supervisor 1, side pipe 2 and needle holder 3.Supervisor 1 comprises injection canal 11, and one end of injection canal 11 is injection port 12, and injection port 12 coordinates with needle holder 3.The other end of injection canal 11 is outlet 13, i.e. tip portion, and outlet 13 is bottom.Side pipe 2 comprises first paragraph 201 and second segment 202, and first paragraph 201 abuts in the inner side of the tube wall 14 of described supervisor 1, and second segment 202 is outwardly through the tube wall 14 of supervisor 1.Side pipe 2 comprises passing away 21, and the water inlet 23 of passing away 21 is arranged on the tube wall 14 of supervisor 1, and the outlet 13 of close injection canal 11, the preset distance between the water inlet 23 of passing away 21 and the outlet 13 of injection canal 11 is L.The discharge outlet 22 of passing away 21 is arranged on the end of second segment 202.
Fig. 2 shows the structural representation of injection needle device in ophthalmologic operation of a kind of embodiment of the present utility model.The work process of needle apparatus is described below in conjunction with Fig. 2.Be set to containing heavy water syringe in the needle holder 3 of needle apparatus, syringe needle is inserted optical fundus.Slowly inject heavy water, heavy water, from the injection port 12 of supervisor 1, flows along injection canal 11, discharges supervisor 1 from outlet 13.The heavy water of discharging falls region A in Fig. 2 in spheroid, and region A attaches most importance to aqua region, and region B is balanced salt aqua region.Along with the injection of heavy water, the volume of heavy water increases, and region A covers the outlet 13 of injection canal 11 lower end, and the pressure of ophthalmic also increases.Be stressed impact, and the balance saline of region B enters from the water inlet 23 of the passing away 21 of side pipe 2, rises along passing away 21, and balance saline is discharged from the discharge outlet 22 of second segment 202.Injection canal 11 and passing away 21, by the dual pathways design of supervisor 1, side pipe 2, separate by needle apparatus, in injection heavy water process, namely namely discharge the balance saline of equal quantities by side pipe 2, maintain the stable of intraocular pressure.Meanwhile, the outlet 13 of injection canal 11 has a preset distance L with the water inlet 23 of passing away 21, and namely the position of outlet 13 lower than the position of water inlet 23, thus will ensure that the heavy water injected supervisor 1 can not directly be discharged by side pipe 2.In addition, whether the discharge outlet 22 of second segment 202 end of passing away 21 protrudes the tube wall 14 of supervisor 1, conveniently can observe and have liquid to flow out, and ensures the steady statue of intraocular pressure in injection process.If discharge outlet 22 is set directly on the tube wall 14 of supervisor 1, then the liquid of discharging can flow out along the outside of the tube wall 14 of supervisor 1, is not easily observed.When the liquid that ophthalmic is discharged needs sampling, discharge outlet 22 can other checkout equipment external, detects drain.
Preferably, the ratio of the cross-sectional area of passing away 21 and the cross-sectional area of injection canal 11 is 0.4 ~ 1, can not have influence on injection and the outflow of liquid.
Preferably, the value of the preset distance L between the water inlet 23 of passing away 21 and the outlet 13 of injection canal 11 is 1 ~ 3mm.There is certain distance between water inlet 23 and outlet 13, make the lasting injection of heavy water can not cover water inlet 23, thus avoid the heavy water injected directly to be discharged by side pipe 2.
Preferably, the discharge outlet 22 of second segment 202 end protrudes the vertical height of the tube wall of supervisor 1 is 1 ~ 4mm.Whether the object of this design further facilitates observation side pipe 2 to have liquid to discharge, and flowing out when there being liquid then proves that side pipe 2 is clog-free, ensures the steady statue of intraocular pressure in injection process.
Preferably, the outlet 13 of injection canal 11 is angular cut, and ellipsoidal cross section, facilitate needle point to push.
A kind of injection needle device that this utility model provides, abuts in the inner side of the tube wall of supervisor by side pipe, form the channel structure of supervisor, side pipe, carries out the real-time displacement of heavy water and balance saline, maintains stable intraocular pressure.
Those skilled in the art can be obvious, can carry out various modifications and variations to above-mentioned exemplary embodiment of the present utility model and not depart from spirit and scope of the present utility model.Therefore, be intended to make this utility model to cover to drop within the scope of appended claims and equivalent arrangements thereof to amendment of the present utility model and modification.
Claims (5)
1. an injection needle device, comprises injection needle, it is characterized in that,
Described injection needle comprises supervisor and side pipe, described supervisor comprises injection canal, described side pipe comprises first paragraph and second segment, and described first paragraph to be placed in described injection canal and to abut in the inner side of the tube wall of described supervisor, and described second segment is outwardly through the tube wall of described supervisor; Described side pipe comprises passing away, and the water inlet of described passing away is arranged on the tube wall of described supervisor, and and have a preset distance between the outlet of described injection canal; The discharge outlet of described passing away is arranged on the end of described second segment.
2. a kind of injection needle device as claimed in claim 1, is characterized in that, the ratio of the cross-sectional area of described passing away and the cross-sectional area of described injection canal is 0.4 ~ 1.
3. a kind of injection needle device as claimed in claim 1, is characterized in that, the value of the preset distance between the water inlet of described passing away and the outlet of described injection canal is 1 ~ 3mm.
4. a kind of injection needle device as claimed in claim 1, is characterized in that, the vertical height that the discharge outlet of described passing away protrudes the tube wall of described supervisor is 1 ~ 4mm.
5. a kind of injection needle device as claimed in claim 1, is characterized in that, the outlet of described injection canal is angular cut, and ellipsoidal cross section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520149817.5U CN204600878U (en) | 2015-03-17 | 2015-03-17 | A kind of injection needle device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520149817.5U CN204600878U (en) | 2015-03-17 | 2015-03-17 | A kind of injection needle device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204600878U true CN204600878U (en) | 2015-09-02 |
Family
ID=53953477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520149817.5U Expired - Fee Related CN204600878U (en) | 2015-03-17 | 2015-03-17 | A kind of injection needle device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204600878U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111655206A (en) * | 2017-11-21 | 2020-09-11 | 弗赛特影像4股份有限公司 | Fluid exchange device for expandable port delivery system and method of use |
| CN112618152A (en) * | 2020-12-14 | 2021-04-09 | 中国人民解放军总医院 | Viscoelastic agent and perfusate integrated injection device capable of measuring intraocular pressure |
| USD1033637S1 (en) | 2022-01-24 | 2024-07-02 | Forsight Vision4, Inc. | Fluid exchange device |
-
2015
- 2015-03-17 CN CN201520149817.5U patent/CN204600878U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111655206A (en) * | 2017-11-21 | 2020-09-11 | 弗赛特影像4股份有限公司 | Fluid exchange device for expandable port delivery system and method of use |
| US11419759B2 (en) | 2017-11-21 | 2022-08-23 | Forsight Vision4, Inc. | Fluid exchange apparatus for expandable port delivery system and methods of use |
| CN112618152A (en) * | 2020-12-14 | 2021-04-09 | 中国人民解放军总医院 | Viscoelastic agent and perfusate integrated injection device capable of measuring intraocular pressure |
| USD1033637S1 (en) | 2022-01-24 | 2024-07-02 | Forsight Vision4, Inc. | Fluid exchange device |
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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: 20150902 Termination date: 20200317 |