CN216876716U - Keep somewhere quick butt joint equipment of needle - Google Patents
Keep somewhere quick butt joint equipment of needle Download PDFInfo
- Publication number
- CN216876716U CN216876716U CN202122509480.2U CN202122509480U CN216876716U CN 216876716 U CN216876716 U CN 216876716U CN 202122509480 U CN202122509480 U CN 202122509480U CN 216876716 U CN216876716 U CN 216876716U
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- connector
- needle tube
- needle
- silica gel
- catheter
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Abstract
The utility model discloses a quick docking device for an indwelling needle, which relates to the technical field of medical supplies and comprises a catheter connector and a connector; the catheter joint comprises a catheter needle tube, a guide pillar and medical silica gel, a needle tube preformed hole and a silica gel mounting port are respectively formed in two ends of the guide pillar, the needle tube preformed hole is communicated with the silica gel mounting port, the catheter needle tube is hermetically mounted in the needle tube preformed hole, and the medical silica gel is fixed in the silica gel mounting port; the connector comprises an injector joint, a connector and a needle tube joint which are integrally connected, wherein two ends of the needle tube joint are respectively connected with the injector joint and the connector; the guide post is matched with the connector in an inserted manner, and the infusion needle tube penetrates through the medical silica gel and is inserted into the needle tube preformed hole without a gap. The utility model reduces the operation process, is safer to use, and can provide a quick and sterile channel.
Description
Technical Field
The utility model relates to the technical field of medical supplies, in particular to a quick docking device for an indwelling needle.
Background
The indwelling needle of the experimental animal is quickly butted, and the administration, the blood sampling, the transfusion and the body fluid collection are carried out. Single infusion and continuous infusion of arterial blood vessels or venous blood vessels of experimental animals, single infusion and continuous infusion of other routes of experimental animals (subcutaneous, gastrointestinal tract, intracerebroventricular, subarachnoid cavity, abdominal cavity) and collection of body fluids of experimental animals (blood, bile, lymph fluid, urine, gastrointestinal fluid, cerebrospinal fluid).
The original experimental animal indwelling needle, the external catheter or the pipeline are butted by a common hollow stainless steel pipe or are sealed by a solid stainless steel plug, and the whole operation process needs to go through nine steps: clamping the tube with a hemostat → removing the stainless steel plug → inserting the syringe → releasing the clip → infusing fluid → clamping the tube → removing the syringe → inserting the plug → releasing the hemostat. This results in a cumbersome and time consuming overall operation, as well as the formation of air locks during repeated operations.
Based on the problems, the indwelling needle rapid butt joint device is designed to solve the problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects in the prior art and provides a quick docking device for an indwelling needle.
In order to achieve the purpose, the utility model adopts the following technical scheme:
an indwelling needle rapid docking device comprises a catheter connector and a connector;
the catheter joint comprises a catheter needle tube, a guide pillar and medical silica gel, a needle tube preformed hole and a silica gel mounting port are respectively formed in two ends of the guide pillar, the needle tube preformed hole is communicated with the silica gel mounting port, the catheter needle tube is hermetically mounted in the needle tube preformed hole, and the medical silica gel is fixed in the silica gel mounting port;
the connector comprises an injector joint, a connector and a needle tube joint which are integrally connected, two ends of the needle tube joint are respectively connected with the injector joint and the connector, a needle tube connecting hole communicated with the injector joint and the connector is formed in the needle tube joint in a penetrating mode, an infusion needle tube is connected in the needle tube connecting hole in a sealing mode, and one end of the infusion needle tube is located in the connector;
the guide post is in plug-in fit with the connector, and the infusion needle tube penetrates through the medical silica gel and is inserted into the needle tube reserved hole in a seamless mode.
Furthermore, the guide post is of a structure made of PVC materials.
Further, the guide post and the medical silica gel are fixed by hot melting.
Furthermore, the diameter of the guide pillar is 3-5 mm.
Further, the connector further comprises a butterfly fin, and the butterfly fin is integrally connected with the syringe connector, the connector and the needle tube connector.
Further, the connector is of a structure made of medical PC materials.
Furthermore, the catheter needle tube and the infusion needle tube are made of stainless steel or nickel-titanium alloy materials.
Further, the end of the syringe joint is provided with an eversion screw.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model forms a closed system, which can reduce infection and improve the smoothness, and the injection needle tube is positioned in the connector, so the use of personnel is safer. The utility model can provide a quick and sterile channel, and is matched with an experimental animal indwelling needle, an external catheter or a pipeline to carry out medicine injection or body fluid collection. This can reduce infection in experimental animals, improve patency and reduce the number of animals required for the study. The utility model has the advantages of cost benefit and high efficiency, and nine steps can be reduced to three simple steps by replacing the original stainless steel pipe through the system: insert syringe → infuse → withdraw syringe.
Drawings
FIG. 1 is an exploded schematic view of the present invention;
FIG. 2 is a schematic view of the structure of the catheter adapter of the present invention;
fig. 3 is a schematic structural view of the connector of the present invention.
In the figure: 1. a catheter adapter; 11. a catheter needle; 12. a guide post; 121. reserving a hole in the needle tube; 122. a silica gel mounting port; 13. medical silica gel; 2. a connector; 21. a syringe adapter; 22. a connector; 23. a needle tube joint; 231. a needle tube connecting hole; 232. a pressure relief vent; 24. a transfusion needle tube; 25. a butterfly fin; 251. a notch; 26. and (4) screwing.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
The utility model discloses a quick docking device for an indwelling needle.
As shown in fig. 1 to 3, the indwelling needle rapid docking device comprises a catheter adapter 1 and a connector 2, wherein one end of the catheter adapter 1 is connected with the connector 2, the catheter adapter 1 is used for connecting a catheter, and the connector 2 is used for connecting a syringe.
Specifically, the catheter joint 1 comprises a catheter needle tube 11, a guide post 12 and medical silica gel 13.
The guide pillar 12 is a cylindrical structure, a needle tube preformed hole 121 and a silica gel mounting port 122 are respectively formed at two ends of the guide pillar 12, the needle tube preformed hole 121 and the silica gel mounting port 122 are coaxially arranged with the guide pillar 12, and the needle tube preformed hole 121 is communicated with the silica gel mounting port 122.
In this embodiment, the diameter of the guide post 12 is 3-5mm, and the guide post 12 is made of PVC material and has a cylindrical structure.
The catheter needle tube 11 is hermetically installed in the needle tube preformed hole 121, the diameter of the needle tube preformed hole 121 is 0.02mm larger than the outer diameter of the catheter needle tube 11, and the catheter needle tube 11 is pressed into the needle tube preformed hole 121 in an interference mode through pressure.
The medical silica gel 13 is fixed in the silica gel mounting opening 122, the guide post 12 and the medical silica gel 13 are fixed by hot melting, and the medical silica gel 13 and the guide post 12 are welded together by high temperature generated by resistance.
Specifically, the connector 2 includes an injector adapter 21, a connector 22, and a needle adapter 23 which are integrally formed.
The outer diameter of the needle tube joint 23 is smaller than the outer diameters of the injector joint 21 and the connector 22, two ends of the needle tube joint 23 are respectively connected with the injector joint 21 and the connector 22, the injector joint 21 is used for being in interference insertion connection with an injector, and the connector 22 is used for being in insertion connection with the guide pillar 12.
The end of the needle tube joint 23 is penetrated with a needle tube connecting hole 231 coaxial with the needle tube joint 23, and the needle tube connecting hole 231 is communicated with the injector joint 21 and the connector 22.
The transfusion needle tube 24 is hermetically connected in the needle tube connecting hole 231, one end of the transfusion needle tube 24 is positioned in the connector 22, the diameter of the needle tube connecting hole 231 is 0.02mm larger than the outer diameter of the transfusion needle tube 24, and the transfusion needle tube 24 is pressed into the needle tube connecting hole 231 in an interference manner through pressure.
In addition, a pressure relief hole 232 communicated with the needle tube connector 23 is formed in the middle of the needle tube connector 23, and the pressure relief hole 232 is used for relieving stress generated on the needle tube connector 23 when the infusion needle tube 24 is pressed into the needle tube connecting hole 231 in an interference manner.
When the guide post 12 is inserted and matched with the connector 22, the transfusion needle tube 24 passes through the medical silica gel 13 and is seamlessly inserted into the needle tube preformed hole 121, so that the sample residue is reduced.
The connector 2 further comprises a butterfly fin 25, the butterfly fin 25 being integrally connected to the syringe adapter 21, the connector 22 and the needle hub 23, the axis of the needle hub 23 being located in the plane formed by the butterfly fin 25. A notch 251 is formed at one end of the butterfly fin 25, and the notch 251 is provided to facilitate mass production of the connector 2.
The end part of the syringe joint 21 is integrally formed with an eversion screw 26, which is convenient for the threaded connection of the syringe joint 21 and a screw syringe and can not cause the connection loosening because of overlarge pressure. Of course, a conventional syringe may be directly inserted into the syringe adapter 21 for use.
In the present embodiment, the connector 2 is made of a medical PC material.
In the present embodiment, the catheter tube 11 and the infusion tube 24 are made of stainless steel or nitinol.
The needle tube made of nickel-titanium alloy can be widely applied to magnetic resonance imaging in preclinical research. Because the needle tube is mostly made of stainless steel materials and is incompatible with the strong magnetic field in the scanner, the needle tube has some difficulties in imaging the experimental animal inserted with the remaining needle or the catheter. This problem is solved by using a needle cannula made of nitinol, making this embodiment MRI compatible.
Nitinol, a non-ferromagnetic material that is ideal for use in body stents and other implantable medical devices, is generally considered MRI compatible.
The connector 2 can be plugged and fitted with the guide post 12 hundreds of times. Guide post 12 may provide 22ga, 25ga couplers for use with 3Fr, 2Fr catheters, respectively. The guide post 12 can be white, red or blue in color, and can be used for distinguishing the type of the butt joint pipeline.
The specific implementation principle of the utility model is as follows:
according to the utility model, the catheter needle tube 11 on the port preposed catheter joint 1 is inserted into a catheter, the injection needle tube is inserted into the injector joint 21 on the connector 2, and finally the guide pillar 12 on the catheter joint 1 is inserted into the connector 22 in the connector 2, so that a closed system is formed, infection can be reduced, smoothness is improved, and the injection needle tube is positioned in the connector 22, so that the use of personnel is safer. The utility model can provide a quick and sterile channel, and is matched with an experimental animal indwelling needle, an external catheter or a pipeline to carry out medicine injection or body fluid collection. This can reduce infection in experimental animals, improve patency and reduce the number of animals required for the study. The utility model has the advantages of cost benefit and high efficiency, and nine steps can be reduced to three simple steps by replacing the original stainless steel pipe through the system: insert syringe → infuse → withdraw syringe.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (8)
1. The quick docking equipment for the indwelling needle is characterized by comprising a catheter connector (1) and a connector (2);
the catheter joint (1) comprises a catheter needle tube (11), a guide pillar (12) and medical silica gel (13), a needle tube preformed hole (121) and a silica gel mounting port (122) are respectively formed in two ends of the guide pillar (12), the needle tube preformed hole (121) is communicated with the silica gel mounting port (122), the catheter needle tube (11) is hermetically mounted in the needle tube preformed hole (121), and the medical silica gel (13) is fixed in the silica gel mounting port (122);
the connector (2) comprises an injector connector (21), a connector (22) and a needle tube connector (23) which are integrally connected, two ends of the needle tube connector (23) are respectively connected with the injector connector (21) and the connector (22), a needle tube connecting hole (231) communicated with the injector connector (21) and the connector (22) is formed in the needle tube connector (23) in a penetrating mode, an infusion needle tube (24) is connected in the needle tube connecting hole (231) in a sealing mode, and one end of the infusion needle tube (24) is located in the connector (22);
the guide post (12) is in plug fit with the connector (22), and the infusion needle tube (24) penetrates through the medical silica gel (13) and is inserted into the needle tube preformed hole (121) without gap.
2. The indwelling needle rapid docking device according to claim 1, wherein the guide post (12) is of PVC construction.
3. The indwelling needle rapid docking device according to claim 2, wherein the guide post (12) and the medical silica gel (13) are fixed by heat fusion.
4. The indwelling needle rapid docking device according to claim 3, wherein the guide post (12) is 3-5mm in diameter.
5. An indwelling needle rapid docking device according to claim 1, wherein the connector (2) further comprises a butterfly fin (25), the butterfly fin (25) being integrally connected to the syringe connector (21), the connector (22) and the needle connector (23).
6. The rapid docking device for indwelling needles according to claim 5, wherein the connector (2) is of a construction made of medical PC material.
7. The rapid docking device for indwelling needles according to claim 1, wherein the catheter needle tube (11) and the infusion needle tube (24) are made of stainless steel or nitinol.
8. An indwelling needle rapid docking device according to claim 1, wherein the end of the syringe adaptor (21) is provided with an everted screw (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122509480.2U CN216876716U (en) | 2021-10-19 | 2021-10-19 | Keep somewhere quick butt joint equipment of needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122509480.2U CN216876716U (en) | 2021-10-19 | 2021-10-19 | Keep somewhere quick butt joint equipment of needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216876716U true CN216876716U (en) | 2022-07-05 |
Family
ID=82194644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122509480.2U Active CN216876716U (en) | 2021-10-19 | 2021-10-19 | Keep somewhere quick butt joint equipment of needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216876716U (en) |
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2021
- 2021-10-19 CN CN202122509480.2U patent/CN216876716U/en active Active
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