CN215023779U

CN215023779U - Central venous catheter with tube sealing joint

Info

Publication number: CN215023779U
Application number: CN202120358492.7U
Authority: CN
Inventors: 胡小兰; 袁林辉; 刘梦琪; 李昌; 康德英
Original assignee: Second Affiliated Hospital to Nanchang University
Current assignee: Second Affiliated Hospital to Nanchang University
Priority date: 2021-02-09
Filing date: 2021-02-09
Publication date: 2021-12-07
Anticipated expiration: 2031-02-09

Abstract

The utility model provides a central venous catheter with a pipe sealing joint, which aims at the defects that the traditional central venous catheter inevitably causes blood loss of a patient, blood pollution to the surrounding environment and the risk of cross infection in the process of putting the central venous catheter, and belongs to the technical field of venous catheter putting, and comprises a catheter main body, a heparin cap, a pipe sealing joint and a guide wire, wherein the catheter main body comprises an inserting pipe, a main pipe and an auxiliary pipe, the main pipe and the auxiliary pipe are respectively provided with a pipe clamp, and the outer ends of the main pipe and the auxiliary pipe are respectively and fixedly provided with a threaded joint; the pipe sealing joint comprises a shell, an elastic pipe sealing inner core is fixedly arranged on the inner side of the shell, an inner hole capable of allowing a guide wire to penetrate through the pipe sealing inner core is formed in the pipe sealing inner core, and when the guide wire does not penetrate through the inner hole, the inner hole is in a closed state. Use the utility model discloses carry out central vein catheterization, can avoid patient's blood loss, reduce the risk that the patient infects, can not produce blood pollution to the surrounding environment yet, the operation is also very simple and convenient.

Description

Central venous catheter with tube sealing joint

Technical Field

The utility model belongs to the technical field of the vein is put the pipe, concretely relates to central venous catheter with seal union coupling.

Background

The central venous catheter technique is widely applied clinically due to the requirements of rapid fluid infusion, blood transfusion, monitoring of central venous pressure, hemofiltration and the like. The currently clinically adopted central venous catheter placement technology needs to place a guide wire into a target blood vessel after a puncture needle reaches the target blood vessel, then withdraw the puncture needle, place a central venous catheter into the target blood vessel under the guidance of the guide wire, and then withdraw the guide wire, thereby completing the central venous catheter placement technology. However, the diameter of the central venous catheter is thicker, so that the central venous catheter suitable for hemofiltration meets the requirement of larger flow, has thicker diameter, inevitably causes a large amount of blood loss of a patient in the process of withdrawing the guide wire until clamping the catheter after the central venous catheter is placed into a target blood vessel through the process, wastes precious blood resources, reduces the medical satisfaction of the patient while causing unnecessary damage to the patient, increases the pollution to medical environments such as a hospital bed and the like, and further increases the risk of cross infection of the patient.

Disclosure of Invention

The utility model discloses put the drawback that the in-process inevitably caused patient's blood loss, to the blood pollution of surrounding environment, has cross infection's risk to traditional central venous catheter, provide a central venous catheter with seal union coupling, this central venous catheter of this use puts the pipe, can reduce blood exosmosis, avoids producing blood pollution to the surrounding environment, also can reduce the risk that the patient infects.

The invention aims to be realized by the following technical scheme: a central venous catheter with a lumen sealing joint comprises a catheter main body, a heparin cap, a tube sealing joint and a guide wire, wherein the catheter main body comprises an insertion pipe, a main pipe and an auxiliary pipe, one end of the insertion pipe is simultaneously communicated with the main pipe and the auxiliary pipe, a Y-shaped structure is formed among the insertion pipe, the main pipe and the auxiliary pipe are respectively provided with a pipe clamp, and the outer ends of the main pipe and the auxiliary pipe are respectively fixedly provided with a threaded joint; the heparin cap and the tube sealing joint can be screwed with the threaded joint; the pipe sealing joint comprises a shell of a circular ring structure, an elastic pipe sealing inner core is fixedly arranged on the inner side of the shell, a guide wire can penetrate through an inner hole of the pipe sealing inner core, and the inner hole is in a closed state when the guide wire does not penetrate through the inner hole.

Preferably, the tube sealing inner core is of a conical structure, and the inner hole is located at the center line of the tube sealing inner core. The tube sealing inner core that sets up like this can carry out better closure with the shell inner chamber, and when the seal wire did not pass the hole, blood can not ooze outward through the hole on the tube sealing inner core, played excellent sealed effect.

Preferably, the tube sealing inner core is made of rubber.

Preferably, the catheter main body is made of a plastic material.

Compared with the prior art, the utility model discloses following beneficial effect has: use the utility model discloses carry out central vein catheterization, can avoid patient's blood loss, reduce the risk that the patient infects, can not produce blood pollution to the surrounding environment yet, the operation is also very simple and convenient.

Drawings

Fig. 1 is a schematic structural view of the present invention without installing a guide wire;

fig. 2 is a schematic structural view of the guide wire of the present invention during installation;

FIG. 3 is a front view of the pipe sealing joint;

FIG. 4 is a right side view of the pipe sealing joint;

the labels in the figure are: 1. the catheter comprises a catheter main body, 2, a heparin cap, 3, a tube sealing joint, 4, a guide wire, 5, an insertion tube, 6, a main tube, 7, an auxiliary tube, 8, a tube clamp, 9, a threaded joint, 10, a shell, 11, a tube sealing inner core, 12 and an inner hole.

Detailed Description

The invention will be further described with reference to the embodiments shown in the drawings to which:

example 1

As shown in fig. 1, 2, 3 and 4, the central venous catheter with a lumen sealing joint comprises a catheter main body 1, a heparin cap 2, a tube sealing joint 3 and a guide wire 4, wherein the catheter main body 1 is made of a plastic material. The catheter main body 1 comprises an insertion pipe 5, a main pipe 6 and an auxiliary pipe 7, one end of the insertion pipe 5 is communicated with the main pipe 6 and the auxiliary pipe 7 at the same time, a Y-shaped structure is formed among the insertion pipe 5, the main pipe 6 and the auxiliary pipe 7 are respectively provided with a pipe clamp 8, and the outer ends of the main pipe 6 and the auxiliary pipe 7 are respectively fixedly provided with a threaded joint 9; the heparin cap 2 and the tube sealing joint 3 can be screwed with the threaded joint 9; the pipe sealing joint 3 comprises an outer shell 10 with a circular ring structure, an elastic pipe sealing inner core 11 is fixedly arranged on the inner side of the outer shell 10, the pipe sealing inner core 11 is of a conical structure, the central line position of the pipe sealing inner core 11 is provided with an inner hole 12 which can enable the guide wire 4 to pass through the pipe sealing inner core 11, and when the guide wire 4 does not pass through the inner hole 12, the inner hole 12 is in a closed state. The tube sealing inner core 11 is made of rubber.

Before the central venous catheter is used, a guide wire 4 firstly passes through a splicing tube 5 and a main tube 6, and two thread joints 9 are both screwed with a heparin cap 2. When the central venous catheter is used for catheterization specifically, firstly, a puncture device is used for puncture, after a puncture needle reaches a target blood vessel, a guide wire 4 is placed into the target blood vessel through puncture, the puncture needle is withdrawn, at the moment, a heparin cap 2 on a main tube 6 is opened, a splicing tube 5 is placed into the target blood vessel, a tube clamp 8 on the main tube 6 is clamped and closed, then the tail end of the guide wire 4 passes through an inner hole 12 in a tube sealing inner core 11, a tube sealing joint 3 is screwed on a threaded joint 9 of the main tube 6 to seal a tube cavity of the main tube 6, the tube clamp 8 on the main tube 6 can be opened freely at the moment, and the central venous catheter is completed after the guide wire 4 is withdrawn. Guide wire 4 withdraws from the back, under the elastic action of sealing intraductal core 11, hole 12 seals, and patient's blood can not flow the extravasation this moment, and the blood loss of reduction patient that can be very big can not pollute the medical environment yet, reduces the risk that the patient infects.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The central venous catheter with the lumen sealing joint is characterized by comprising a catheter main body (1), a heparin cap (2), a tube sealing joint (3) and a guide wire (4), wherein the catheter main body (1) comprises an insertion tube (5), a main tube (6) and an auxiliary tube (7), one end of the insertion tube (5) is simultaneously communicated with the main tube (6) and the auxiliary tube (7), a Y-shaped structure is formed among the insertion tube (5), the main tube (6) and the auxiliary tube (7) are respectively provided with a tube clamp (8), and the outer ends of the main tube (6) and the auxiliary tube (7) are respectively fixedly provided with a threaded joint (9); the heparin cap (2) and the tube sealing joint (3) can be screwed with the threaded joint (9); seal union joint (3) including shell (10) of circle annular structure, shell (10) inboard is fixed to be equipped with and has elastic tub inner core (11) of sealing, is equipped with on the tub inner core (11) and enables seal wire (4) to pass hole (12) of tub inner core (11) of sealing, when seal wire (4) do not pass during hole (12), hole (12) are the closure state.

2. The central venous catheter with the lumen sealing joint as claimed in claim 1, characterized in that the catheter sealing inner core (11) is of a conical structure, and the inner hole (12) is positioned at the central line of the catheter sealing inner core (11).

3. The central venous catheter with lumen closure joint as claimed in claim 2, characterized in that the catheter sealing inner core (11) is made of rubber.

4. A central venous catheter with lumen closure junction according to claim 1 characterized by the fact that the catheter body (1) is made of plastic material.