CN203777428U - Needle assembly for syringes - Google Patents
Needle assembly for syringes Download PDFInfo
- Publication number
- CN203777428U CN203777428U CN201420035090.3U CN201420035090U CN203777428U CN 203777428 U CN203777428 U CN 203777428U CN 201420035090 U CN201420035090 U CN 201420035090U CN 203777428 U CN203777428 U CN 203777428U
- Authority
- CN
- China
- Prior art keywords
- needle
- inner tube
- epitheca
- syringes
- outer sheath
- 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
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses a needle assembly for syringes, which is applied in the field of medical instruments. The needle assembly for syringes comprises an outer sheath, an inner tube and a needle, the needle is screwed in the inner tube, the inner tube and the needle can be moved to and fro in the outer sheath, the outer sheath is provided with two concave rings close to the front end, and the gap between the smallest-diameter part of each concave ring and the inner tube is 0.02mm to 0.03mm. The needle of the needle assembly for syringes can be automatically centered as the needle is pushed out of the outer sheath, so that the needle is prevented from piercing the front end of the outer sheath, and thereby an operation can be carried out better.
Description
Technical field
This utility model relates to a kind of medical instruments, especially a kind of needle section subassembly of entry needle.
Background technology
Entry needle is one of common medical instruments, its function is to inject after entering human body by scope pipeline, both can be for surgical wound or focus injection of tissue gel, blood coagulating protein, the medicine of sclerosing agent and so on, also can saline injection etc. other medicines make tissue protuberance, to facilitate operation.The needle section subassembly of the entry needle of prior art as shown in Figure 1, mainly by politef epitheca 1, PE inner tube 2, rustless steel syringe needle 3, formed, wherein PE inner tube 2 links together with rustless steel syringe needle 3, simultaneously in the interior motion of politef epitheca 1, but because PE inner tube 2 and politef epitheca 1 exist larger gap, be generally 0.2mm, when rustless steel syringe needle 3 is got from politef epitheca 1, needle point is easy to prop up 1 head reducing place of politef epitheca, cause rustless steel syringe needle 3 to get, in doctor's operation process, directly impact is used.
Utility model content
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, and a kind of needle section subassembly of entry needle is provided, and makes the syringe needle can Automatic-searching center in getting the process of epitheca, has avoided needle pierces epitheca front end.
For achieving the above object, the technical solution of the utility model is: a kind of needle section subassembly of entry needle, comprise epitheca, inner tube and syringe needle, described inner tube and syringe needle are for being threaded, inner tube and syringe needle can move back and forth in epitheca, described epitheca is provided with two recessed circles near front end place, and the gap between the minimum place of described recessed loop diameter and inner tube is 0.02mm～0.03mm.
Gap between the minimum place of described recessed loop diameter and inner tube is 0.025mm.
Distance between two described recessed circles is 3mm～5mm.
Distance between two described recessed circles is 4mm.
The beneficial effects of the utility model are: the internal diameter of two recessed circles is a bit larger tham inner tube external diameter, make inner tube in motor process, not have very large resistance, operate easily, make the connector of inner tube and syringe needle substantially remain on the center of epitheca simultaneously, syringe needle can Automatic-searching center in getting the process of epitheca, avoided needle pierces epitheca front end, thereby can better perform the operation.
Accompanying drawing explanation
Fig. 1 is the structural representation of needle section subassembly of the entry needle of prior art;
Fig. 2 is structural representation of the present utility model.
The specific embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
As shown in Figure 2, a kind of needle section subassembly of entry needle, comprise epitheca 11, inner tube 12 and syringe needle 13, described inner tube 12 and syringe needle 13 are for being threaded, inner tube 12 and syringe needle 13 can move back and forth in epitheca 11, described epitheca 11 is provided with two recessed circles 14 near front end place, and the gap between the minimum place of described recessed circle 14 diameters and inner tube 12 is 0.02mm～0.03mm.
Gap between the minimum place of described recessed circle 14 diameters and inner tube 12 is 0.025mm.
Distance between two described recessed circles 14 is 3mm～5mm.
Distance between two described recessed circles 14 is 4mm.
Inner tube 12 of the present utility model and syringe needle 13, for being threaded, connect reliably, and good airproof performance, can keep good linearity.Epitheca 11 is processed by special tool(s), form two recessed circles 14, two recessed circle 14 internal diameters are a bit larger tham inner tube 12 external diameters, make inner tube 12 in motor process, not have very large resistance, operate easily, when the joining locomotion of inner tube 12 and syringe needle 13 arrives near epitheca 11 front end, two recessed circles 14 just encase inner tube 12, the concentricity that draws two recessed circles 14 according to the principle of 2 definite straight lines is better, make inner tube 12 and the connector of syringe needle 13 substantially remain on the center of epitheca 11, syringe needle 13 can Automatic-searching center in the process of getting epitheca 11, avoided syringe needle 13 to pierce through epitheca 11 front ends, thereby can better carry out hands art, doctor uses simple to operate like this, efficiency is high, reduced patient's the painful time, in the situation that not increasing cost, improved product.
Claims (4)
1. the needle section subassembly of an entry needle, comprise epitheca (11), inner tube (12) and syringe needle (13), described inner tube (12) and syringe needle (13) are for being threaded, inner tube (12) and syringe needle (13) can move back and forth in epitheca (11), it is characterized in that: described epitheca (11) is provided with two recessed circles (14) near front end place, the gap between the minimum place of described recessed circle (14) diameter and inner tube (12) is 0.02mm～0.03mm.
2. the needle section subassembly of a kind of entry needle as claimed in claim 1, is characterized in that: the gap between the minimum place of described recessed circle (14) diameter and inner tube (12) is 0.025mm.
3. the needle section subassembly of a kind of entry needle as claimed in claim 1, is characterized in that: the distance between two described recessed circles (14) is 3mm～5mm.
4. the needle section subassembly of a kind of entry needle as claimed in claim 3, is characterized in that: the distance between two described recessed circles (14) is 4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420035090.3U CN203777428U (en) | 2014-01-21 | 2014-01-21 | Needle assembly for syringes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420035090.3U CN203777428U (en) | 2014-01-21 | 2014-01-21 | Needle assembly for syringes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203777428U true CN203777428U (en) | 2014-08-20 |
Family
ID=51313663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420035090.3U Expired - Fee Related CN203777428U (en) | 2014-01-21 | 2014-01-21 | Needle assembly for syringes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203777428U (en) |
-
2014
- 2014-01-21 CN CN201420035090.3U patent/CN203777428U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203694250U (en) | Novel self-exhausting remaining needle | |
| CN203777428U (en) | Needle assembly for syringes | |
| CN103933638B (en) | A kind of singlehanded remaining needle punctured | |
| CN105214168A (en) | Venous detaining needle needle assembly | |
| CN203874190U (en) | Hematodialysis puncture needle assembly | |
| CN203620006U (en) | A safety syringe needle exclusively used for heparin cap | |
| CN204072937U (en) | A kind of medical center venous duct tube clipper | |
| CN204484962U (en) | There is the syringe needle of through hole | |
| CN211383152U (en) | Butterfly type anti-reflux needle-free quick connection indwelling needle | |
| CN203059967U (en) | Booster used for animal injection | |
| CN205145281U (en) | Syringe needle subassembly for needle is kept somewhere to vein | |
| CN105498032A (en) | Infusion needle special for puncture connecting piece | |
| CN203342174U (en) | Deep vein puncture needle | |
| CN201862078U (en) | Special injection needle head for hand plimming cosmetology | |
| CN205287117U (en) | Tube sealing device | |
| CN203915667U (en) | Pin device auto-split syringe | |
| CN202961374U (en) | Anti-pollution injector | |
| CN203016969U (en) | Blood taking needle for detection | |
| CN208905657U (en) | It is a kind of to intervene thorn device of threading a needle | |
| CN204798577U (en) | Novel anesthetic needle | |
| CN203355044U (en) | Novel anesthetic needling instrument | |
| CN201642324U (en) | Fork type probe | |
| CN203123174U (en) | Anti-release infusion apparatus | |
| CN203789935U (en) | Blood sampling device matching with scalp acupuncture | |
| CN205586310U (en) | Novel needle -prick prevention device with insulin pen cooperation use |
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: 20140820 Termination date: 20150121 |
|
| EXPY | Termination of patent right or utility model |