CN218793515U

CN218793515U - Jugular vein catheterization

Info

Publication number: CN218793515U
Application number: CN202223023639.0U
Authority: CN
Inventors: 朱英杰; 徐薇
Original assignee: Shenzhen Institute of Advanced Technology of CAS
Current assignee: Shenzhen Institute of Advanced Technology of CAS
Priority date: 2022-11-12
Filing date: 2022-11-12
Publication date: 2023-04-07
Anticipated expiration: 2032-11-12

Abstract

The utility model discloses a jugular vein catheterization, include: a connection assembly provided with a channel; a first hose in communication with the channel; a rigid tube in communication with the first hose; a second hose in communication with the hard tube; wherein the hardness of the first hose and the hardness of the second hose are both less than the hardness of the hard tube. The jugular vein catheterization of this application is putting the pipe in-process, because be connected with the hard tube on the second hose, can form the impetus, is convenient for clip or hold to put into the blood vessel more easily, improved and put the pipe success rate. Certainly, the first hose is connected to the hard tube, so that the hard tube can be prevented from damaging the blood vessel.

Description

Jugular vein catheterization

Technical Field

The utility model relates to the technical field of medical equipment, what especially relate to is a jugular vein catheterization.

Background

The big mouse is the most common experimental animal for life science and medical research. In pharmacodynamic and drug safety evaluation, different supplementary positions of animals are often required to be dosed and materials are required to be obtained, and the drug metabolism condition is observed in time. Common administration modes include tail vein administration, cardiac puncture administration and jugular vein catheterization administration. The tail vein is thin and is not suitable for long-term administration; the heart puncture administration has too much damage to animals and does not accord with animal ethics.

The jugular vein catheter is convenient for long-time continuous administration or blood sampling to monitor metabolism, has small stimulation to animals during administration, and is an important test method of pharmacological experiments. In the prior art, the existing catheter finished products in the market at present mainly have two types, one type is a puncture needle, and the puncture needle is easy to puncture blood vessels in the using process to cause the failure of catheter placement; the other type of all catheters are silica gel hoses, and the catheter has the advantages that blood vessels cannot be damaged after the catheters are implanted, but the catheter is high in catheter placing difficulty and long in catheter placing time, so that the success rate of catheter placing is low.

Accordingly, there is a need for improvements and developments in the art.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, provide a jugular vein catheterization, aim at solving the problem that the success rate of putting of jugular vein catheterization that silica gel hose made among the prior art is low.

The utility model provides a technical scheme that technical problem adopted as follows:

a jugular vein catheter, comprising:

a connection assembly provided with a channel;

a first hose in communication with the channel; wherein, the jugular vein catheterization still includes:

a rigid tube in communication with the first hose;

a second hose in communication with the hard tube;

wherein the hardness of the first hose and the hardness of the second hose are both less than the hardness of the hard tube.

The jugular vein catheterization, wherein, first hose with the second hose is established respectively the cover is established the outside at the both ends of hard tube.

The jugular vein catheterization, wherein, first hose and the second hose interconnect and integrated into one piece.

The jugular vein catheterization, wherein, the jugular vein catheterization still includes:

and the connecting bead is positioned at the position of the hard tube and sleeved outside the first hose and the second hose.

The jugular vein catheterization device is characterized in that the outer diameter of the connecting bead gradually increases and then decreases in the direction from the first hose to the second hose, and the position of the maximum outer diameter of the connecting bead is close to the second hose; and/or

The hard tube extends to the outer shape of the connecting bead to form a fixed position towards one end of the second hose.

The jugular vein catheterization, wherein, first hose, the second hose, the hard tube and connect the pearl integrated injection moulding.

The jugular vein catheterization device is characterized in that the length of the first flexible pipe is smaller than that of the second flexible pipe; and/or

The length of the first hose is 1-3cm; and/or

The length of the second hose is 3-5cm; and/or

The first hose and the second hose are both silicone tubes; and/or

The hard pipe is a polyethylene pipe.

The jugular vein catheterization of wherein, the coupling assembling includes:

a base provided with a through hole;

the pipe body is arranged on one side of the base;

the connecting pipe is arranged on the other side of the base;

the guide pipe cap is in threaded connection with the pipe body;

the plugging column is arranged in the catheter cap and is inserted into the catheter body;

the pipe body, the through hole and the connecting pipe are communicated to form the channel;

the connecting pipe is connected with the second hose.

The jugular vein catheter is characterized in that the connecting tube is L-shaped; and/or

The base is a tissue compatibility mesh base.

The jugular vein catheterization pipe, wherein one end of the first flexible pipe, which is far away from the hard pipe, forms a wedge-shaped structure.

Has the advantages that: the jugular vein catheterization of this application is putting the pipe in-process, because be connected with the hard tube on the second hose, can form the impetus, is convenient for clip or grip to put into the blood vessel more easily, improved and put the pipe success rate. Certainly, the first hose is connected to the hard tube, so that the hard tube can be prevented from damaging the blood vessel.

Drawings

Fig. 1 is a first structural schematic diagram of the middle jugular vein catheterization of the present invention.

Fig. 2 is a second structural schematic diagram of the middle jugular vein catheterization of the present invention.

Fig. 3 is an exploded view of the jugular vein catheterization of the present invention.

Fig. 4 is a cross-sectional view of the jugular vein catheterization of the present invention.

Fig. 5 is a cross-sectional exploded view of the middle jugular vein catheterization of the present invention.

Fig. 6 is a graph showing the experimental results of self-administration of methamphetamine to mice of the present invention.

Description of reference numerals:

10. a connecting assembly; 11. a channel; 12. a base; 121. a through hole; 13. a pipe body; 14. a connecting pipe; 15. a catheter cap; 16. plugging the column; 20. a first hose; 30. a hard pipe; 40. a second hose; 50. beads are attached.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention will be described in further detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1-6, the present invention provides preferred embodiments of a jugular vein catheterization.

As shown in fig. 1 and 4, the jugular vein catheterization includes:

a connection assembly 10 provided with a channel 11;

a first hose 20 communicating with said channel 11;

a hard tube 30 in communication with the first hose 20;

a second hose 40 in communication with the wand 30;

wherein the hardness of the first hose 20 and the hardness of the second hose 40 are both less than the hardness of the hard tube 30.

It is worth to be noted that, in the prior art, the total length of the vein catheterization is a flexible tube, and no force point exists during catheterization, which results in great difficulty in catheterization, long catheterization operation time and high catheterization failure rate. The jugular vein catheterization of this application is putting the pipe in-process, because be connected with hard tube 30 on the second hose 40, can form the impetus, is convenient for clip or grip to put into the blood vessel more easily, improved and put the pipe success rate. Of course, the first flexible tube 20 is connected to the hard tube 30, so that the hard tube 30 can be prevented from damaging the blood vessel.

After the jugular vein of this application is put the pipe, first hose 20, hard tube 30 and second hose 40 are located the blood vessel, and coupling assembling 10 is located the outer and in the subcutaneous tissue of blood vessel. When administration is required, the liquid medicine is injected into the passage 11 so that the liquid medicine enters the blood vessel from the passage 11. When blood is to be collected, blood can be collected from the channel 11.

In a preferred embodiment of the present invention, please refer to fig. 2 and fig. 4, the first flexible tube 20 and the second flexible tube 40 are respectively sleeved outside the two ends of the hard tube 30.

Specifically, in order to prevent the hard tube 30 from damaging the blood vessel, the first and second

flexible tubes

20 and 40 are respectively sleeved outside two ends of the hard tube 30.

In a preferred embodiment of the present invention, the first hose 20 and the second hose 40 are connected to each other and integrally formed.

Specifically, when the first hose 20 and the second hose 40 are both sleeved outside the hard tube 30, the first hose 20 and the second hose 40 may be connected to each other and integrally formed, that is, the hard tube 30 is inserted into the hose, and the hose is divided into two parts according to the position of the hard tube 30, wherein one part is the first hose 20 and the other part is the second hose 40.

In a preferred embodiment of the present invention, referring to fig. 3-5, the jugular vein catheterization further includes:

and the connecting bead 50 is positioned at the position of the hard tube 30 and sleeved outside the first hose 20 and the second hose 40.

Specifically, in order to further prevent the first flexible tube 20, the hard tube 30 and the second flexible tube 40 from falling off from the venous blood vessel, the hard tube 30 is provided with a connection bead 50 and sleeved outside the first flexible tube 20 and the second flexible tube 40. The size of the connection bead 50 is set according to the inner diameter of the blood vessel. After the connection bead 50 is located in the blood vessel, the connection bead 50 abuts against the inner wall of the blood vessel, so that the hard tube 30 can be fixed to a certain extent, and the first hose 20, the hard tube 30 and the second hose 40 are prevented from falling off from each other. Compared with the prior art, the fixing strength of the pure hose is not easy to control, and if the pure hose is fixed by binding the blood vessel with a wire, the pure hose is easy to block due to tight binding, and the pure hose is easy to fall off due to loose binding. In the present application, since the hard tube 30 and the connection bead 50 are disposed, the hard tube 30 can be fixed, and the first hose 20, the hard tube 30, and the second hose 40 are prevented from falling off due to continuous shaking.

The connection bead 50 can also effectively seal the connection between the first hose 20 and the hard tube 30, and effectively seal the connection between the second hose 40 and the hard tube 30, so as to avoid liquid leakage.

In a preferred embodiment of the present invention, referring to fig. 3-5, the outer diameter of the connection bead 50 gradually increases and then decreases from the first hose 20 to the second hose 40, and the position of the maximum outer diameter of the connection bead 50 is close to the second hose 40.

Specifically, the connection bead 50 is a drop-shaped connection bead 50, and the drop-shaped connection bead 50 has a large end with a larger outer diameter and a small end with a smaller outer diameter, the small end is close to the first hose 20, and the large end is close to the second hose 40.

In a preferred embodiment of the present invention, referring to fig. 1 and 4, the hard tube 30 extends toward the end of the second flexible tube 40 to form a fixed position outside the connection ball 50.

Specifically, for further fixation, the length of the hard tube 30 is longer, and extends out of the connection bead 50 to form a fixation position, which is used for fixation with the blood vessel, and ensures that the first soft tube 20, the hard tube 30 and the second soft tube 40 fall off in the venous blood vessel.

In a preferred embodiment of the present invention, the first flexible tube 20, the second flexible tube 40, the hard tube 30 and the connecting bead 50 are integrally injection molded. Specifically, the first hose 20, the second hose 40, the hard tube 30 and the connecting bead 50 are integrally formed by injection molding.

In a preferred embodiment of the present invention, referring to fig. 1-3, the length of the first hose 20 is less than the length of the second hose 40.

Specifically, the first hose 20 has a smaller length and the second hose 40 has a longer length, i.e., the wand 30 is positioned adjacent to the port of the first hose 20.

In a preferred embodiment of the present invention, referring to fig. 1-3, the first hose 20 has a length of 1-3cm. The length of the second hose 40 is 3-5cm.

Specifically, the lengths of the first hose 20 and the second hose 40 may be set as needed.

In a preferred embodiment of the present invention, silicone tubes are used for the first hose 20 and the second hose 40.

Specifically, silicone tubes may be used as the first hose 20 and the second hose 40. Of course, other materials may be used to form the first and

second hoses

20, 40 as desired.

In a preferred embodiment of the present invention, the hard tube 30 is a polyethylene tube.

Specifically, the hard tube 30 may be a polyethylene tube. Of course, other materials may be used to form the wand 30 as desired.

In a preferred embodiment of the present invention, referring to fig. 3-5, the connecting assembly 10 includes:

a base 12 provided with a through hole 121;

a tube body 13 disposed at one side of the base 12;

a connection pipe 14 disposed at the other side of the base 12;

a conduit cap 15 in threaded connection with the pipe body 13;

a plugging column 16 which is provided in the catheter cap 15 and is inserted into the catheter body 13;

wherein the tube body 13, the through hole 121 and the connecting tube 14 are communicated to form the channel 11;

the connection pipe 14 is connected to the second hose 40.

In particular, the base 12 is of a relatively large size to facilitate securing the connection assembly 10 within subcutaneous tissue. Of course, the catheter cap 15 can be a light catheter cap 15, so that the connecting component 10 is prevented from falling off, and the burden of animals can be reduced. The silicone tube, the polyethylene tube and the connecting assembly 10 are commercially available products, can purchase materials, are low in price and greatly reduce the administration cost.

In a preferred embodiment of the present invention, referring to fig. 3-5, the connecting tube 14 is L-shaped. Specifically, the connection pipe 14 has an L-shape, facilitating connection of the second hose 40 and the base 12.

In a preferred embodiment of the present invention, the base 12 is a tissue compatible mesh base 12.

Specifically, the use of the histocompatibility mesh base 12 facilitates long term storage in the subcutaneous tissue of the animal.

In a preferred embodiment of the present invention, referring to fig. 1-3, the end of the first flexible tube 20 away from the hard tube 30 forms a wedge-shaped structure.

Specifically, the port of the first hose 20 is formed in a wedge-shaped structure, similar to the end of the needle, which is beneficial to enlarging the aperture of the port and avoiding blockage.

The beneficial effects of the utility model are that:

the jugular vein catheterization structure of the utility model has simple structure, simple and convenient manufacture and convenient popularization and application. The utility model adopts a hose-hard tube-hose mode, the part entering the blood vessel is a hose, and the inner wall of the blood vessel can not be damaged or even the blood vessel can be punctured. The middle hard tube is beneficial to improving the success rate of the tube insertion and improving the tube insertion efficiency. Through the mode in subcutaneous tunnel, place hose and connecting piece in mouse or rat shoulder both sides scapula in the middle of, avoid the animal to grab and sting pipe and connecting piece, the guarantee experiment can go on smoothly for a long time.

The utility model discloses a pearl is connected to the water droplet shape, can effectively prevent first hose, hard tube and second hard tube roll-off blood vessel.

The utility model discloses the used body of coupling assembling matches commercialization catheter cap and interior contact pin, can effectively carry out follow-up blood sampling, operation such as dosing.

Through the experiment, the success rate of mouse jugular vein intubation by adopting the jugular vein catheterization of the application exceeds 90 percent. The vein device is used for carrying out a mouse methamphetamine self-administration experiment, and the mouse successfully establishes self-administration behaviors (figure 6), so that the jugular vein catheterization device is not easy to fall off and lose efficacy and has high reliability.

It is to be understood that the invention is not limited to the above-described embodiments, and that modifications and variations may be made by those skilled in the art in light of the above teachings, and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.

Claims

1. A jugular vein placement tube comprising:

a connection assembly provided with a channel;

a first hose in communication with the channel; it is characterized in that the jugular vein catheterization further comprises:

a rigid tube in communication with the first hose;

a second hose in communication with the hard tube;

2. The jugular vein catheterization of claim 1, wherein the first flexible tube and the second flexible tube are respectively sleeved outside two ends of the hard tube.

3. The jugular vein cannula of claim 2, wherein the first and second flexible tubes are connected to each other and are integrally formed.

4. The jugular vein catheterization system of claim 2, further comprising:

5. The jugular vein catheterization device according to claim 4, wherein the outer diameter of the connecting bead gradually increases and then decreases in a direction from the first flexible pipe to the second flexible pipe, and the position of the maximum outer diameter of the connecting bead is close to the second flexible pipe; and/or

6. The jugular vein cannula of claim 4, wherein the first flexible tube, the second flexible tube, the hard tube and the connection bead are integrally injection molded.

7. The jugular vein catheterization of claim 1, wherein the length of the first flexible tube is less than the length of the second flexible tube; and/or