CN218961456U

CN218961456U - Replacement pipe joint of central venous pipe

Info

Publication number: CN218961456U
Application number: CN202221654646.8U
Authority: CN
Inventors: 梅俪凡
Original assignee: Boai Hospital of Zhongshan
Current assignee: Boai Hospital of Zhongshan
Priority date: 2022-06-29
Filing date: 2022-06-29
Publication date: 2023-05-05
Anticipated expiration: 2032-06-29

Abstract

The utility model discloses a replacement pipe joint of a central venous pipe, which is sleeved on a cover sleeve outside a cannula, wherein after the cannula is inserted into the central venous pipe and connected with the central venous pipe, the cover sleeve is rolled and attached to the outer wall of the central venous pipe, and under the elastic action of the cover sleeve, a sealing layer and a protective layer are formed between the joint of the replacement pipe joint and a branch pipe and the outer wall of the branch pipe, which is equivalent to the formation of a layer of sealing layer and a protective layer between the inside and the outside of the joint, so that the replacement pipe joint can maintain good tightness and connection stability in the long-term use process, has certain infection and pollution prevention effects, and can achieve the same effect as the original pipe joint in the actual use process.

Description

Replacement pipe joint of central venous pipe

Technical Field

The utility model relates to the technical field of medical appliances, in particular to a replacement pipe joint of a central venous pipe.

Background

The central venous tube is a conduit which is arranged from a peripheral venous way to a central vein, is a pipeline made of silica gel and PVC materials, is used for providing mid-to-long-term venous treatment for patients, and has the characteristics of greatly reducing pain brought to the patients by frequent venous puncture, avoiding influence and damage of irritant drugs to veins, along with long retention time, rapid fluid infusion and the like.

One end of the central venous tube is connected with a large vein, and the other end of the central venous tube can lead out a plurality of branch tubes for introducing medicines or dialyzate, and when the medicines are injected into the central venous tube, the branch tubes are generally connected with an injector for loading the medicines through an original tube joint; for patients needing long-time central venous transfusion, such as dialysis treatment, the central venous tube can be used for two to three years, the joint of the branch tube and the original tube joint is cracked for a long time under the action of erosion and external force to cause pollution and blood flow infection of the branch tube, at the moment, a section of the branch tube which is cracked or polluted is needed to be sheared off, a new tube joint is replaced, the connection mode of the tube joint and the branch tube is that the inner wall of the branch tube is fixedly connected by means of interference fit in the branch tube inserted into the tube joint, in the use process, the joint is easy to pollute or infect, and the original tube joint has a certain defect compared with the firmness in tightness.

Disclosure of Invention

In view of the above, the utility model aims to provide a replacement pipe joint for a central intravenous pipe, which has high tightness at the joint and stable and firm connection.

The utility model adopts the technical proposal for solving the technical problems that:

the utility model provides a replacement coupling of central venous tube, includes the joint body, can connect the heparin cap at joint body one end, the one end that connects the body has the intubate that is used for connecting at central venous tube, the other end has the injection pipe that is used for injecting outside liquid, the cover that can overturn to the interface end of intubate is equipped with to the intubate on the intubate.

The cannula outer wall is provided with a pawl around the outer wall circumference.

The outer wall of the injection pipe is provided with a screwing thread which is screwed and matched with the heparin cap, the vertical direction inside the heparin cap is not communicated, and the injection hole on the injection pipe can be sealed after the heparin cap is matched with the injection pipe.

The outer wall of the heparin cap is provided with anti-skid stripes which are convenient for people to pinch the heparin cap by hands and then rotate along the circumferential direction.

The middle part of the connector body is provided with a holding part which is convenient for a person to hold and rotate the cannula to insert into the central venous tube.

The beneficial effects of the utility model are as follows:

the replacement pipe joint of the central venous pipe is used for connecting the inside and outside of the central venous pipe, after the cannula is inserted into the branch pipe of the central venous pipe, the annular inverted tooth on the outer wall of the cannula has the function of preventing the cannula from falling off from the wall of the branch pipe, the cover sleeve sleeved on the cannula is turned over towards the direction of the interface of the branch pipe and the cannula, and under the elastic action of the cover sleeve, the joint part of the replacement pipe joint and the branch pipe and the outer wall of the branch pipe are tightly attached, so that a layer of sealing layer and a protective layer are formed between the inside and the outside of the joint part, the replacement pipe joint is ensured to keep good sealing performance and connection stability in the long-term use process, the effect of preventing infection and pollution to be as good as that of the original pipe joint can be achieved in the actual use process.

Drawings

FIG. 1 is a schematic view showing the structure of the cover sleeve of the replacement pipe joint in an unreturned state;

FIG. 2 is a schematic view of the external appearance of the cover sleeve of the replacement pipe joint after being rolled;

FIG. 3 is a schematic illustration of the structure of the central venous tube connected to the replacement tube fitting;

fig. 4 is a schematic view of the structure of the central venous tube after the cover sleeve is turned over for connection with the replacement tube connection.

Detailed Description

The technical scheme of the present utility model will be clearly and completely described below with reference to the accompanying drawings.

Referring to fig. 1 and 2, the present utility model proposes a replacement tube joint for a central venous tube, comprising a joint body 1 and a heparin cap 2 capable of being connected to one end of the joint body 1, wherein one end of the joint body 1 is provided with a cannula 11 for being connected to the central venous tube, the other end is provided with an injection tube 12 for injecting external liquid, the cannula 11 is sleeved with a cover 10 capable of being rolled up towards the interface end of the cannula 11, and after the cannula 11 is inserted into the central venous tube and connected with the central venous tube, the cover 10 can be rolled up and attached to the outer wall of the central venous tube.

Referring to fig. 1 and 3, the outer wall of the cannula 11 is provided with a tooth 111 formed around the circumference of the outer wall to prevent the cannula 11 from falling off when it is inserted into the branch pipe 31.

Referring to fig. 1 and 2, the outer wall of the injection tube 12 is provided with a screwing thread 20 screwed with the heparin cap 2, the inside of the heparin cap 2 is not communicated in the vertical direction, and the heparin cap 2 can seal an injection hole on the injection tube 12 after being matched with the injection tube 12.

Referring to fig. 1, the outer wall of the heparin cap 2 is provided with anti-slip stripes 20 which are convenient for a human hand to pinch the heparin cap 2 and then rotate along the circumferential direction.

Referring to fig. 2, the middle part of the joint body 1 is provided with a holding part 13 which is convenient for a human hand to hold and rotate the cannula 11 to insert into the central venous tube.

Referring to fig. 3 and 4, the central venous tube comprises a central catheter 30, a plurality of branch tubes 31 and valves 32 sleeved on the branch tubes 31, and the joint body 1 of the replacement tube joint is connected with the branch tubes 31.

Further, the replacement pipe joint of the central venous pipe is a joint for connecting the inside and the outside of the central venous pipe, after the insertion pipe is inserted into the branch pipe 31 of the central venous pipe, the annular inverted tooth 111 of the outer wall of the insertion pipe 11 has the function of preventing the insertion pipe 11 from falling off from the wall of the branch pipe 31, the cover sleeve 10 sleeved on the insertion pipe 11 is rolled towards the joint of the branch pipe 31 and the insertion pipe 11, and under the elastic action of the cover sleeve 10, the joint of the replacement pipe joint and the branch pipe 31 and the outer wall of the branch pipe 31 are tightly attached, so that a layer of sealing layer and protective layer are formed between the inside and the outside of the joint, the good sealing performance and the connection stability of the replacement pipe joint are ensured in the long-term use process, the effect of preventing infection and pollution is achieved, and the same effect as that of the original pipe joint can be achieved in the actual use process.

Claims

1. The utility model provides a replacement coupling of central venous tube, its characterized in that, including connect body (1), can connect heparin cap (2) in the one end of connecting body (1), the one end of connecting body (1) has intubate (11) that are used for connecting at central venous tube, the other end has injection pipe (12) that are used for injecting outside liquid, and the cover (10) that can overturn to the interface end of intubate (11) are equipped with on intubate (11), intubate (11) outer wall is provided with back teeth (110) around outer wall a week.

2. The replacement pipe joint for the central venous pipe according to claim 1, wherein the outer wall of the injection pipe (12) is provided with screwing threads which are in screwing fit with the heparin cap (2), the inside of the heparin cap (2) is not communicated in the vertical direction, and an injection hole on the injection pipe (12) can be sealed after the heparin cap (2) is matched with the injection pipe (12).

3. The replacement tube joint for central venous tubes according to claim 1, wherein anti-slip stripes (20) which are convenient for people to pinch the heparin cap (2) and then rotate along the circumferential direction are arranged on the outer wall of the heparin cap (2).

4. A replacement tube fitting for a central venous tube according to claim 1, characterized in that the middle part of the fitting body (1) is provided with a grip (13) facilitating the insertion of the cannula (11) into the central venous tube by hand.