CN210095671U - Anti-pulling-off structure of endoscopic injection needle - Google Patents
Anti-pulling-off structure of endoscopic injection needle Download PDFInfo
- Publication number
- CN210095671U CN210095671U CN201920348253.6U CN201920348253U CN210095671U CN 210095671 U CN210095671 U CN 210095671U CN 201920348253 U CN201920348253 U CN 201920348253U CN 210095671 U CN210095671 U CN 210095671U
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- connecting rod
- interior pole
- rod
- pipe portion
- injection needle
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Abstract
The utility model belongs to the technical field of medical instrument, concretely relates to prevent drawing off structure of scope syringe needle, including interior pole and connecting rod, interior pole moves back slot part and interior pole head including interior pole handle portion, interior pole fender shoulder portion, interior pole sliding part, interior pole of fixed connection in proper order, and the connecting rod includes fixed connection's connecting rod head and connecting rod pipe portion. The utility model relates to a rationally, simple structure, set up the barb on interior pole, avoided the doctor to draw the risk of taking off when clinical use greatly.
Description
Technical Field
The utility model belongs to the technical field of medical instrument, concretely relates to preventing of scope syringe needle draws takes off structure.
Background
Endoscopic injection needles are commonly used medical devices that are used in conjunction with endoscopes for submucosal injection of the digestive tract. An endoscopic injection needle generally comprises a needle head, an outer tube, an inner tube, an outer rod, an inner rod and a sleeve, wherein the connecting rod is sleeved on the inner rod in a sliding manner, so that a doctor has the hidden trouble that the inner rod is pulled off from the connecting rod when using the endoscopic injection needle.
SUMMERY OF THE UTILITY MODEL
In order to make up the deficiency of the prior art, the utility model provides a structure technical scheme is taken off in preventing drawing of scope syringe needle.
The pull-out preventing structure of the endoscopic injection needle is characterized by comprising an inner rod and a connecting rod, wherein the inner rod comprises an inner rod handle part, an inner rod shoulder part, an inner rod sliding part, an inner rod groove withdrawing part and an inner rod head which are fixedly connected in sequence; the connecting rod includes fixed connection's connecting rod head and connecting rod pipe portion, sets up the connecting rod through-hole that runs through connecting rod head and connecting rod pipe portion on the connecting rod, and the external diameter that connecting rod pipe portion was managed is greater than the external diameter of connecting rod head, and connecting rod slidable cover is established on interior pole sliding part, sets up the connecting rod pipe portion counter bore that communicates with the connecting rod through-hole in the connecting rod pipe portion, and connecting rod pipe portion counter bore keeps off the shape phase-match of shoulder with interior pole, both interference fit, when the connecting rod slides when interior pole sliding part head end, connecting rod and.
The pull-off preventing structure of the endoscopic injection needle is characterized in that a plurality of elastic clamping ribs which are contacted with the inner wall of a counter bore of the connecting rod tube part are annularly arranged on the outer wall of the shoulder part of the inner rod.
The pull-off preventing structure of the endoscopic injection needle is characterized in that the elastic clamping rib is of a wedge-shaped structure, and one end of the elastic clamping rib close to the inner rod sliding part is sharper.
The pull-off preventing structure of the endoscopic injection needle is characterized in that the barbs are two block structures which extend outwards towards the inner rod sliding part.
The pull-off preventing structure of the endoscopic injection needle is characterized in that the inner walls of two sides of the connecting rod through hole are respectively provided with a connecting rod through groove.
The utility model relates to a rationally, simple structure, set up the barb on interior pole, avoided the doctor to draw the risk of taking off when clinical use greatly.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of the inner rod structure of the present invention;
FIG. 3 is a schematic view of the connecting rod structure of the present invention;
fig. 4 is a schematic view of a cross-sectional structure of a connecting rod in the present invention.
In the figure: 5 interior pole, 500 interior pole handle portion, 501 interior pole shoulder portion, 5010 elasticity card muscle, 502 interior pole sliding part, 503 interior pole retreat slot portion, 504 interior pole head, 505 barb, 7 connecting rods, 700 connecting rod head, 701 connecting rod pipe portion, 7010 connecting rod pipe portion counter bore, 702 connecting rod through groove.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1-4, an anti-pull-off structure of an endoscopic injection needle comprises an inner rod 5 and a connecting rod 7.
Connecting rod 7 includes fixed connection's connecting rod head 700 and connecting rod pipe portion 701, set up the connecting rod through-hole that runs through connecting rod head 700 and connecting rod pipe portion 701 on the connecting rod 7, the logical groove 702 of connecting rod is seted up respectively to the inner wall both sides of connecting rod through-hole, the external diameter of connecting rod pipe portion 701 is greater than the external diameter of connecting rod head 700, the slidable cover of connecting rod 7 is established on interior pole sliding portion 502, set up in connecting rod pipe portion 701 connecting rod pipe portion 7010 with the connecting rod through-hole intercommunication, connecting rod pipe portion counter bore 7010 and interior pole keep off the shape.
During the use, connecting rod 7 cover is on interior pole 5, and interior pole fender shoulder 501 inserts connecting rod pipe portion counter bore 7010, and elasticity card muscle 5010 connecting rod pipe portion counter bore 7010's inner wall contact makes connecting rod 7 and interior pole 5 realize interference fit to make connecting rod 7 fix on interior pole 5, when connecting rod 7 slides interior pole sliding part 502 head end (the left end of interior pole sliding part 502 in fig. 1, 2), connecting rod 7 and barb 505 butt, barb 505 can prevent that connecting rod 7 from droing from interior pole 5.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. An anti-pull-out structure of an endoscopic injection needle is characterized by comprising an inner rod and a connecting rod, wherein the inner rod comprises an inner rod handle part, an inner rod blocking shoulder part, an inner rod sliding part, an inner rod returning groove part and an inner rod head which are fixedly connected in sequence; the connecting rod includes fixed connection's connecting rod head and connecting rod pipe portion, sets up the connecting rod through-hole that runs through connecting rod head and connecting rod pipe portion on the connecting rod, and the external diameter that connecting rod pipe portion was managed is greater than the external diameter of connecting rod head, and connecting rod slidable cover is established on interior pole sliding part, sets up the connecting rod pipe portion counter bore that communicates with the connecting rod through-hole in the connecting rod pipe portion, and connecting rod pipe portion counter bore keeps off the shape phase-match of shoulder with interior pole, both interference fit, when the connecting rod slides when interior pole sliding part head end, connecting rod and.
2. The pull-off preventing structure of an endoscopic injection needle as defined in claim 1, wherein a plurality of elastic ribs are disposed on the outer wall of the shoulder of the inner shaft portion to contact the inner wall of the counterbore of the connecting rod tube portion.
3. The pull-off preventing structure of an endoscopic injection needle as defined in claim 2, wherein the elastic locking rib has a wedge-shaped structure, and the end of the elastic locking rib close to the sliding portion of the inner rod is more sharp.
4. A pull-off preventing structure of an endoscopic injection needle as defined in claim 1, wherein said barbs are two block structures extending outwardly toward the sliding portion of the inner rod.
5. The pull-off preventing structure of an endoscopic injection needle according to claim 1, wherein the inner walls of both sides of the through hole of the connecting rod are respectively provided with a connecting rod through groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920348253.6U CN210095671U (en) | 2019-03-19 | 2019-03-19 | Anti-pulling-off structure of endoscopic injection needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920348253.6U CN210095671U (en) | 2019-03-19 | 2019-03-19 | Anti-pulling-off structure of endoscopic injection needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210095671U true CN210095671U (en) | 2020-02-21 |
Family
ID=69532389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920348253.6U Active CN210095671U (en) | 2019-03-19 | 2019-03-19 | Anti-pulling-off structure of endoscopic injection needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210095671U (en) |
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2019
- 2019-03-19 CN CN201920348253.6U patent/CN210095671U/en active Active
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