CN211023302U

CN211023302U - Jugular vein catheter system

Info

Publication number: CN211023302U
Application number: CN201921961892.6U
Authority: CN
Inventors: 钟海星; 封斌; 童婷婷
Original assignee: Fourth Military Medical University FMMU
Current assignee: Fourth Military Medical University FMMU
Priority date: 2019-11-13
Filing date: 2019-11-13
Publication date: 2020-07-17
Anticipated expiration: 2029-11-13

Abstract

The utility model relates to a pharmacology animal experimental apparatus technical field that doses specifically discloses a jugular vein system of putting, this system of putting includes pjncture needle, a plurality of fixed pearl and hose, and the one end of hose and pjncture needle sealing connection and intercommunication, the other end of hose can be dismantled and be connected with the connecting piece, and connecting piece and hose sealing connection and intercommunication, a plurality of fixed pearls all are established on the hose outer wall that is close to pjncture needle one end, and each fixed pearl all is located the same periphery with the center pin of hose as the centre of a circle, still is equipped with the guide wire on the hose that is close to the connecting end of connecting piece; the utility model discloses, through setting up the mode that fixed pearl passes through the ligature with the pjncture needle and fixing in mouse jugular vein department, prevent that the pjncture needle from removing, put the pipe success rate and improve, the guide wire is tunnel under the skin, and the hose that will keep away from the pjncture needle end is removed the neck back by the abdomen neck of mouse, has prevented stinging of mouse hose, can ensure that the hose is long-term to be preserved, guarantees pharmacology experimental study's reliability.

Description

Jugular vein catheter system

Technical Field

The utility model relates to a pharmacology animal experimental apparatus technical field that doses, concretely relates to jugular vein catheterization system.

Background

The mouse is one of the commonly used experimental animals in biology, medical science research and teaching, is commonly used for carrying out safety evaluation of medicaments, generally needs to be dosed to different parts of the animal, samples the target body position of the animal, is used for observing the metabolic condition of the medicaments in the mouse body, and commonly used dosing modes comprise tail vein dosing and heart puncture dosing;

at present, the jugular vein of a mouse is mostly adopted for drug administration research, the stress response is small when the jugular vein of the mouse is placed in a tube, the mouse can be administrated in a stable state, and therefore, the experimental data in a pharmacological experiment is more effective and reasonable, but the method adopted for placing the jugular vein of the mouse at present is as follows: the traditional vest type can effectively prevent the animal placing tube from falling off, but is expensive and not suitable for the research of long-term pharmacological experiments, so the jugular vein placing tube system which is reasonable in price and low in falling-off prevention cost has great practical value.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the problems in the prior art and providing a jugular vein catheterization system.

The utility model provides a jugular vein system of putting pipe, including pjncture needle, a plurality of fixed pearl and hose, the one end and the pjncture needle sealing connection and the intercommunication of hose, the other end of hose can be dismantled and be connected with the connecting piece that can link to each other with heparin cap or syringe, connecting piece and hose sealing connection and intercommunication, a plurality of fixed pearls are all established on the hose outer wall that is close to pjncture needle one end, and each fixed pearl all is located the circumference of hose cross section, still is connected with the guide line on the hose that is close to the connecting piece link.

Preferably, the connecting piece includes feed liquor pipe, stock solution chamber and the drain pipe that is connected with heparin cap or syringe, the top and the feed liquor pipe sealing connection and the intercommunication in stock solution chamber, the bottom and the drain pipe sealing connection and the intercommunication in stock solution chamber, drain pipe and hose sealing connection and intercommunication.

Preferably, the hose is provided with an annular protrusion, and the annular protrusion is provided with a threading hole for a guide wire to pass through.

Preferably, a plurality of liquid outlets are arranged on the puncture needle at equal intervals along the length direction of the puncture needle.

Preferably, the plurality of fixing beads are integrally formed with the outer wall of the hose in an injection molding mode.

Preferably, the connecting member is made of a transparent material.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a jugular vein puts simple structure, the material is easy, and it is convenient to manufacture, and the popularization and application of being convenient for fixes the pjncture needle in mouse jugular vein department through the mode that sets up fixed pearl through the ligature, prevents that the pjncture needle from removing, and the intubate success rate improves, and operation time shortens to through the mode in subcutaneous tunnel, the hose that will keep away from pjncture needle one end is introduced back of the body neck portion by the belly neck portion of mouse, has prevented stinging of mouse opposition pipe system, has guaranteed the reliability of pharmacology experimental study.

2. The utility model discloses, through setting the connecting piece to being made by transparent material, can conveniently observe the injection condition of medicine, before the use and when maintenance at ordinary times, through feed liquor pipe to stock solution intracavity dropwise add heparin, guaranteed in connecting piece and the hose all the time with the isolated liquid seal state of outside air, make the dose or the injection volume of mouse controllable, be convenient for carry out long-term research to the mouse.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural diagram of the connecting member of the present invention.

Description of reference numerals:

1. puncture needle, 2, fixed bead, 3, soft tube, 4, guide line, 5, connecting piece, 5-1, liquid inlet tube, 5-2, liquid storage cavity, 5-3, liquid outlet tube.

Detailed Description

The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited by the following detailed description. 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.

Example 1

As shown in fig. 1, the utility model provides a jugular vein catheterization system, including pjncture needle 1, a plurality of fixed pearl 2 and hose 3, the one end and the pjncture needle 1 sealing connection and the intercommunication of hose 3, the other end of hose 3 can be dismantled and be connected with can with heparin cap or the connecting piece 5 that the syringe links to each other, connecting piece 5 and hose 3 sealing connection and intercommunication, a plurality of fixed pearl 2 are all established on the 3 outer walls of hose that are close to pjncture needle 1 one end, and each fixed pearl 2 all is located the circumference of 3 cross sections of hose, still are connected with guide line 4 on the hose 3 that is close to the connecting piece 5 link.

In the present embodiment, in order to solve the problems that the conventional jugular vein indwelling catheter is expensive and is liable to fall off, jugular vein administration is to be carried out by using the indwelling catheter system of the present invention, before administration, the jugular vein indwelling catheter system of a mouse is fixed, the abdominal jugular vein of the mouse is punctured by the puncture needle 1, a plurality of fixing beads 2 are fixed to the venous blood vessel of the neck of the mouse by ligation, blood flow from the head of the mouse to the heart of the mouse is blocked, the puncture needle 1 is fixed, the puncture needle 1 is displaced to place, in order to prevent the mouse from biting the indwelling catheter buried outside the mouse, a subcutaneous tunnel from the abdominal neck of the mouse to the neck of the mouse is formed in the abdominal neck of the mouse by using a vascular clamp, the catheter 4 is clamped by the vascular clamp via the subcutaneous tunnel, and the catheter 3 is moved from the abdominal neck of the mouse to the back of the neck of the mouse, and the other end of the flexible pipe 3 and the guide line 4 are both penetrated out through an opening on the back of the neck, the design prevents the mouse from biting the opposite pipe component 1, then the guide line 4 is cut off, the other end of the flexible pipe 3 penetrated out is detachably connected with the connecting piece 5, the connecting piece 5 is inserted into the other end of the flexible pipe, the communication between the connecting piece 5 and the flexible pipe 3 is realized, then one end of the connecting piece 5 connected with the flexible pipe 3 is ligated and fixed in subcutaneous connective tissue, the other end of the connecting piece 5 is exposed out of the body, the long-term administration of the jugular vein of the mouse is realized, meanwhile, the biting of the opposite pipe of the mouse is prevented, the connecting piece 5 is arranged to prevent the flexible pipe 3 from moving inwards for the convenience of administration, meanwhile, the convenience of administration.

As shown in figure 2, in order to realize the sealed communication between the hose 3 and the connector 5, prevent the hose 3 from moving inwards, and simultaneously, in order to facilitate the administration and ensure the administration amount, the liquid outlet pipe 5-3 of the connector 5 is inserted with the other end of the hose 3, a part of the liquid storage cavity 5-2 is buried in the subcutaneous tissue of the mouse in a ligation mode, and the liquid inlet pipe 5-1 is exposed outside the mouse, in order to prevent the hose 3 from moving during the operation, in order to ensure the administration accuracy of the mouse, heparin is required to be dripped into the liquid storage cavity 5-2 by the liquid inlet pipe 5-1 before the administration, so that the liquid storage cavity 5-2 and the hose 3 are in a liquid sealing state, the air in the liquid storage cavity 5-2 and the hose 3 is reduced, if the administration is carried out without the connector 5, the administration is carried out by directly using the hose 3, a section of air in the hose 3 is required, the operation is complicated, so the connecting piece is set to be in a form of a liquid inlet pipe 5-1, a liquid storage cavity 5-2 and a liquid outlet pipe 5-3, the pipe diameter of the liquid inlet pipe 5-1 is matched with the pipe diameter of the hose 3, when the connecting piece is used, the liquid inlet pipe 5-1 is directly inserted into the hose 3, so the connecting piece 5 comprises the liquid inlet pipe 5-1, the liquid storage cavity 5-2 and the liquid outlet pipe 5-3 which are connected with a heparin cap or an injector, the top of the liquid storage cavity 5-2 is hermetically connected and communicated with the liquid inlet pipe 5-1, the bottom of the liquid storage cavity 5-2 is hermetically connected and communicated with the liquid outlet pipe 5-3, and the liquid outlet pipe 5-3 is hermetically connected and communicated with the hose 3.

In order to prevent the guide wire 4 from passing through a subcutaneous tunnel through the clamping of the vascular clamps and guiding the hose 3, the slipping occurs, so that two circles of annular protrusions, annular grooves and frosted protrusions are arranged on the hose 3 or threading holes are formed in the annular protrusions, the purpose is to increase the friction force between the guide wire 4 and the hose 3 and prevent the guide wire 4 from slipping.

In order to conveniently carry out intravenous injection administration on the mouse jugular vein catheterization, a heparin cap or a syringe is inserted on the connecting piece 5.

In order to prevent the puncture needle 1 from being blocked and influence the drug administration of the tube placing system, a plurality of liquid outlets are arranged on the puncture needle 1 at equal intervals along the needle length direction of the puncture needle.

In order to prevent the plurality of fixing beads 2 from falling off, the fixing beads 2 and the outer wall of the hose 3 are integrally injection-molded.

In order to facilitate the observation of the accuracy of the dosage of the catheter system, air bubbles are prevented from occurring in the connecting piece 5, so that the connecting piece 5 is made of a transparent material.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Jugular vein system of putting pipe, its characterized in that, including pjncture needle (1), a plurality of fixed pearl (2) and hose (3), the one end and pjncture needle (1) sealing connection and the intercommunication of hose (3), the other end of hose (3) can be dismantled and be connected with connecting piece (5) that can link to each other with heparin cap or syringe, connecting piece (5) and hose (3) sealing connection and intercommunication, a plurality of fixed pearl (2) are all established on hose (3) outer wall near pjncture needle (1) one end, and each fixed pearl (2) all are located the circumference of hose (3) cross section, still are connected with guide wire (4) on hose (3) near connecting piece (5) link.

2. The jugular vein catheterization system according to claim 1, characterized in that the connecting piece (5) comprises a liquid inlet pipe (5-1) connected with a heparin cap or a syringe, a liquid storage cavity (5-2) and a liquid outlet pipe (5-3), the top of the liquid storage cavity (5-2) is hermetically connected and communicated with the liquid inlet pipe (5-1), the bottom of the liquid storage cavity (5-2) is hermetically connected and communicated with the liquid outlet pipe (5-3), and the liquid outlet pipe (5-3) is hermetically connected and communicated with the flexible pipe (3).

3. The jugular vein catheter system according to claim 1, wherein the flexible tube (3) is provided with an annular protrusion, and the annular protrusion is provided with a threading hole for the guide wire (4) to pass through.

4. A jugular vein catheterization system according to claim 1, characterized in that the puncture needle (1) is provided with a plurality of liquid outlet holes at equal intervals along the needle length direction of the puncture needle.

5. The jugular catheter system of claim 1, wherein the plurality of fixation beads (2) are each injection molded integrally with the outer wall of the hose (3).

6. A jugular catheter system according to claim 1, wherein the connector (5) is made of a transparent material.