CN215134818U - Anti-reflux remaining needle - Google Patents
Anti-reflux remaining needle Download PDFInfo
- Publication number
- CN215134818U CN215134818U CN202022858789.8U CN202022858789U CN215134818U CN 215134818 U CN215134818 U CN 215134818U CN 202022858789 U CN202022858789 U CN 202022858789U CN 215134818 U CN215134818 U CN 215134818U
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- needle
- indwelling needle
- indwelling
- shell
- reflux
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Abstract
The utility model relates to an anti-reflux remaining needle, which comprises a positive pressure joint, an extension tube, a remaining needle shell, a transfusion tube, a remaining needle sleeve and a remaining needle head; one end of the extension tube is communicated with the positive pressure joint, and the other end of the extension tube is communicated with the infusion tube arranged on one side of the remaining needle shell; the indwelling needle head is detachably arranged in the indwelling needle shell, the rear end of the indwelling needle head is arranged on the needle base, and one side of the needle base is provided with a pinching block; a one-way valve for preventing backflow is arranged in the indwelling needle shell; the upper end of the indwelling needle shell is provided with an opening, the cover body is in threaded connection with the upper part of the indwelling needle shell, and the needle seat is clamped between the cover body and a sealing sieve in the indwelling needle shell; compared with the prior art, the one-way valve arranged in the infusion tube can prevent blood from flowing back to the infusion tube or the extension tube, thereby effectively preventing the blockage at the position.
Description
Technical Field
The utility model relates to an indwelling needle.
Background
At present, the indwelling needles at home and abroad are in a direct liquid type, and after the transfusion is finished, the heparin sodium tube is pushed in to seal the tube, but the position is blocked because blood reflows into a thinner transfusion tube and an extension tube.
Medical personnel only remain the soft indwelling needle sleeve in the body by withdrawing the needle base away from the body, in the prior art, the needle base is clamped and connected with the upper end opening of the indwelling needle shell in an interference fit manner, if the needle base is in over tight fit, the medical personnel are not easy to withdraw the needle base from the upper end of the indwelling needle shell, and if the needle base is in over loose fit, the indwelling needle head is easy to loosen in the injection process; therefore, the dimensional errors of the needle seat and the shell of the remaining needle in the production process are controlled very accurately, thereby reducing the production yield.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides a keep somewhere needle against current.
The utility model provides a technical scheme: an anti-reflux remaining needle comprises a positive pressure joint, an extension pipe, a remaining needle shell, a transfusion pipe, a remaining needle sleeve and a remaining needle head; one end of the extension tube is communicated with the positive pressure joint, and the other end of the extension tube is communicated with the infusion tube arranged on one side of the remaining needle shell; the indwelling needle head is detachably arranged in the indwelling needle shell, the rear end of the indwelling needle head is arranged on the needle base, and one side of the needle base is provided with a pinching block; a one-way valve for preventing backflow is arranged in the indwelling needle shell; the needle stand is clamped between the cover body and a sealing sieve in the indwelling needle shell.
Preferably, the one-way valve is arranged in the infusion tube and positioned at the outlet of the infusion tube.
Preferably, the one-way valve is arranged in the indwelling needle shell and is positioned at the outlet position of the lower end.
Preferably, 4 vertical clamping grooves are formed in the upper part of the indwelling needle shell; the upper part of each clamping groove is provided with an opening, and 4 clamping grooves are uniformly distributed in the circumferential direction; 4 clamping blocks are arranged on the side surface of the needle base corresponding to the 4 clamping grooves; wherein 1 the joint block is connected with a kneading block.
Preferably, the upper part of the indwelling needle shell is provided with an external thread, and the cover body is correspondingly provided with an internal thread; the bottom end face of the cover body is also provided with a top block.
Preferably, the top block is made of rubber.
Preferably, the kneading block is provided with a plurality of horizontal protrusions.
Preferably, the side surface of the cover body is provided with a plurality of vertical protrusions distributed circumferentially.
The utility model provides a pair of keep somewhere needle against current, compare with prior art:
(1) the one-way valve arranged in the infusion tube can prevent blood from flowing back to the infusion tube or the extension tube, thereby effectively preventing the position from being blocked.
(2) The cover body is screwed on the upper part of the indwelling needle shell, and the ejector block at the lower end of the cover body props against the needle seat; the clamping block of needle file joint in the clamping groove, upper end and bottom are blocked the position by kicking block and sealed sieve respectively to realize fixedly.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:
fig. 1 is a structural view of a first embodiment of an anti-reflux indwelling needle according to the present invention.
Fig. 2 is a structural view of a second embodiment of the anti-reflux indwelling needle according to the present invention.
Description of the drawings: 1-indwelling needle shell, 101-infusion tube, 102-sealing sieve, 103-clamping groove, 104-one-way valve, 2-indwelling needle sleeve, 3-needle seat, 301-clamping block, 302-pinching block, 303-horizontal protrusion, 304-indwelling needle head, 4-cover body, 401-top block, 402-vertical protrusion, 5-positive pressure joint and 6-extension tube.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
An anti-reflux remaining needle comprises a positive pressure joint 5, an extension tube 6, a remaining needle shell 1, an infusion tube 101, a remaining needle sleeve 2 and a remaining needle head 304; one end of the extension tube 6 is communicated with the positive pressure joint 5, and the other end of the extension tube 6 is communicated with an infusion tube 101 arranged on one side of the indwelling needle shell 1; the indwelling needle head 304 is detachably arranged in the indwelling needle housing 1, the rear end of the indwelling needle head 304 is arranged in the needle seat 3, and one side of the needle seat 3 is provided with a kneading block 302; a one-way valve 104 for preventing reverse flow is arranged in the indwelling needle shell 1; the upper end of the indwelling needle housing 1 is open, the cover 4 is screwed on the indwelling needle housing 1, and the needle seat 3 is clamped between the cover 4 and the sealing screen 102 in the indwelling needle housing 1.
In a first embodiment, the one-way valve 104 is disposed within the infusion tube 101 at the outlet of the infusion tube 101.
In the second embodiment, the one-way valve 104 is disposed in the indwelling needle housing 1 at the lower outlet position.
The one-way valve 104 can prevent blood from flowing back to the infusion tube 101 or the extension tube 6, thereby effectively preventing the position from being blocked.
In the two embodiments, 4 vertical clamping grooves 103 are arranged at the upper part of the indwelling needle housing 1; the upper part of the clamping groove 103 is provided with an opening, and 4 clamping grooves 103 are uniformly distributed in the circumferential direction; the side surface of the needle seat 3 is provided with 4 clamping blocks 301 corresponding to the 4 clamping grooves 103; wherein 1 of the clamping blocks 301 is connected with a pinching block 302.
Furthermore, the upper part of the indwelling needle shell 1 is provided with an external thread, and the cover body 4 is correspondingly provided with an internal thread; the bottom end surface of the cover body 4 is also provided with a top block 401.
Further, the top block 401 is made of rubber.
In the design, the cover body 4 is screwed on the upper part of the indwelling needle shell 1, and the top block 401 at the lower end of the cover body 4 props against the needle seat 3; the clamping block 301 of the needle base 3 is clamped in the clamping groove 103, and the upper end and the bottom end of the needle base are clamped by the top block 401 and the sealing sieve 102 respectively, so that the needle base is fixed.
In the above two embodiments, the kneading block 302 is provided with a plurality of horizontal protrusions 303, and the horizontal protrusions 303 play a role in skid resistance.
In the above two embodiments, the side of the cover 4 is provided with a plurality of circumferentially distributed vertical protrusions 402, and the vertical protrusions 402 make it easy for the operator to rotate the cover 4.
The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes made by the present specification can be changed, or directly or indirectly applied to other related technical fields, and all the same principles are included in the protection scope of the present invention.
Claims (8)
1. An anti-reflux remaining needle comprises a positive pressure joint, an extension pipe, a remaining needle shell, a transfusion pipe, a remaining needle sleeve and a remaining needle head; one end of the extension tube is communicated with the positive pressure joint, and the other end of the extension tube is communicated with the infusion tube arranged on one side of the remaining needle shell; the indwelling needle head is detachably arranged in the indwelling needle shell, the rear end of the indwelling needle head is arranged on the needle base, and one side of the needle base is provided with a pinching block; it is characterized in that a one-way valve for preventing countercurrent is arranged in the indwelling needle shell; the needle stand is clamped between the cover body and a sealing sieve in the indwelling needle shell.
2. The anti-reflux indwelling needle according to claim 1, wherein the one-way valve is located in the infusion tube at the outlet of the infusion tube.
3. The anti-reflux indwelling needle according to claim 1, wherein the one-way valve is located in the indwelling needle housing at the lower outlet position.
4. The anti-reflux indwelling needle according to claim 1, 2 or 3, wherein the upper part of the indwelling needle housing is provided with 4 vertical clamping grooves; the upper part of each clamping groove is provided with an opening, and 4 clamping grooves are uniformly distributed in the circumferential direction; 4 clamping blocks are arranged on the side surface of the needle base corresponding to the 4 clamping grooves; wherein 1 the joint block is connected with a kneading block.
5. The anti-reflux indwelling needle according to claim 4, wherein the upper part of the indwelling needle housing is provided with external threads, and the cover body is correspondingly provided with internal threads; the bottom end face of the cover body is also provided with a top block.
6. The anti-reflux indwelling needle of claim 5, wherein the top block is made of rubber.
7. The anti-reflux indwelling needle of claim 4, wherein the knob is provided with a plurality of horizontal protrusions.
8. The anti-reflux indwelling needle of claim 4, wherein the side of the cap is provided with a plurality of circumferentially distributed vertical protrusions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022858789.8U CN215134818U (en) | 2020-12-01 | 2020-12-01 | Anti-reflux remaining needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022858789.8U CN215134818U (en) | 2020-12-01 | 2020-12-01 | Anti-reflux remaining needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215134818U true CN215134818U (en) | 2021-12-14 |
Family
ID=79350979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022858789.8U Active CN215134818U (en) | 2020-12-01 | 2020-12-01 | Anti-reflux remaining needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215134818U (en) |
-
2020
- 2020-12-01 CN CN202022858789.8U patent/CN215134818U/en active Active
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