CN218793514U

CN218793514U - Wall-sticking-preventing central venous double-lumen catheter

Info

Publication number: CN218793514U
Application number: CN202222834599.1U
Authority: CN
Inventors: 戴振源; 孔倩
Original assignee: Third Affiliated Hospital Sun Yat Sen University
Current assignee: Third Affiliated Hospital Sun Yat Sen University
Priority date: 2022-10-26
Filing date: 2022-10-26
Publication date: 2023-04-07
Anticipated expiration: 2032-10-26

Abstract

The utility model discloses a prevent pasting wall central vein two-chamber pipe, it connects including two-chamber pipe, Y type pipe and the infusion that communicates in proper order, two-chamber pipe includes the pipe body, arranges in spiral person in charge and spiral auxiliary pipe in the pipe body, the spiral person in charge with spiral auxiliary pipe intertwine, the lateral wall that the spiral was responsible for is equipped with main side opening, the lateral wall of spiral auxiliary pipe is equipped with vice side opening. Compared with the prior art, the utility model discloses a prevent pasting wall center vein two-chamber pipe can prevent that blood purification in-process vascular pipe wall from hugging closely at the pipe opening part, and fundamentally solves because of a series of the not smooth problem of drawing blood that the pipe adherence produced, improves blood purification efficiency, improves treatment.

Description

Wall-sticking-preventing central venous double-lumen catheter

Technical Field

The utility model relates to the technical field of medical appliances, in particular to a double-lumen catheter for preventing central vein from being stuck on wall.

Background

Blood purification refers to a process of introducing the blood of a patient out of the body by using an instrument and equipment, removing metabolic wastes or toxic substances in the body through a special procedure, correcting water and electrolyte balance disorder, and then introducing the blood back into the body.

Central venous catheters are the most common method of indwelling blood access in blood purification treatments. The double-lumen catheter of the existing central venous catheter is generally provided with a pair of parallel catheter lumens in a catheter body, and the double-lumen catheter is connected with an extension tube through a Y-shaped connecting piece, so that blood flows out of a main catheter lumen of the double-lumen catheter to a blood purification instrument and then flows back to a side catheter lumen of the double-lumen catheter by the blood purification instrument to flow back to a patient. During the blood purification process, due to the negative pressure suction effect, the blood vessel wall may be attached to the opening of the double-lumen catheter, thereby causing blood to be unable to be drawn out, and blood flow to be slowed down or interrupted. The position of the patient changes, the position of the tip of the catheter is not good enough, and the catheter can contact with the vascular valve, so that the wall attachment probability of the catheter can be increased.

At present, the method of adjusting the position and the direction of a catheter in a rotating way, withdrawing blood by an injector or injecting normal saline is generally adopted for clinically treating the catheter adherence, the methods can work temporarily, but the problem of unsmooth blood guiding is often difficult to finally relieve, the machine still frequently gives an alarm and even is forced to be taken off to finish blood purification, the related blood flow infection risk of the catheter is greatly increased, the medical care workload is increased, discomfort is caused to a patient, the blood purification efficiency is obviously influenced, and the treatment effect is reduced.

Therefore, the central venous catheter capable of solving the catheter adherence is designed and developed, the problem of catheter adherence is fundamentally solved, and the central venous catheter has great clinical significance and economic benefits for improving the blood purification efficiency and the treatment effect.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome above-mentioned prior art central venous catheter vascular pipe wall and adsorb the problem that leads to blood to draw out, the blood flow slows down or breaks at the pipe opening part when carrying out blood purification treatment, a prevent pasting wall central vein two-chamber pipe is provided, should prevent pasting wall central vein two-chamber pipe and prevent that blood purification in-process vascular pipe wall from hugging closely at the pipe opening part, fundamentally solves a series of unsmooth problems of drawing blood that produce because of the pipe adherence, improves blood purification efficiency, improves treatment.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a prevent pasting wall central vein two-chamber pipe, its includes two-chamber pipe, Y type pipe and the infusion joint that communicates in proper order, two-chamber pipe includes the pipe body, arranges in spiral person in charge and spiral auxiliary pipe in the pipe body, the spiral person in charge with spiral auxiliary pipe intertwine, the lateral wall that the spiral was responsible for is equipped with main side opening, the lateral wall of spiral auxiliary pipe is equipped with vice side opening.

Furthermore, the Y-shaped pipe is provided with a Y-shaped connecting part, a main pipe branch end and an auxiliary pipe branch end, and the Y-shaped connecting part is respectively communicated with the main pipe branch end and the auxiliary pipe branch end; the spiral main pipe is communicated with the branch end of the main pipe through the Y-shaped connecting part, and the spiral auxiliary pipe is communicated with the branch end of the auxiliary pipe through the Y-shaped connecting part; the infusion joint comprises a main tube infusion joint and an auxiliary tube infusion joint, the main tube infusion joint is communicated with the branch end of the main tube, and the auxiliary tube infusion joint is communicated with the branch end of the auxiliary tube.

Furthermore, the spiral main pipe is far away from one end of the Y-shaped pipe is a main pipe main hole, and the spiral main pipe is provided with the main side hole at a distance of the spiral pipe section more than 1cm away from the main pipe main hole.

Furthermore, the main side holes are more than two, and the distance between the main side holes and the main pipe main holes is 1-2cm.

Furthermore, the auxiliary side hole is formed in the spiral pipe section of the spiral auxiliary pipe, which is more than 3cm away from the main pipe main hole.

Furthermore, the number of the auxiliary side holes is more than three, and the distance between the auxiliary side holes and the main pipe main hole is 3-5cm.

Furthermore, the double-cavity catheter is provided with a fixed wing, and the fixed wing is used for being fixed on the body surface of a patient.

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

the utility model discloses a two-chamber pipe is responsible for by the spiral of intertwine and constitutes double helix structure with the spiral auxiliary pipe to close on of being responsible for in the spiral person in charge and spiral auxiliary pipe and establish main side opening and vice side opening respectively, the attached vascular wall of two-chamber pipe leads to drawing blood not smooth when can effectively preventing blood purification treatment, still can effectively reduce fibrin sheath, the inside and outside thrombus of pipe, the probability that vein valve blockked up and shelter from pipe inlet, liquid outlet. The double-spiral wrapping structure of the main and auxiliary tubes can effectively prevent the double-cavity catheter from being blocked due to the change of the body position of a patient or the local compression of limbs, can also reduce the activation of platelets induced by shearing force, and is favorable for reducing the formation of thrombus.

Drawings

FIG. 1 is a schematic structural view of an anti-wall sticking central venous double lumen catheter according to an embodiment of the present invention;

fig. 2 is an exploded view of the structure of the central venous double lumen catheter for preventing wall adhesion according to an embodiment of the present invention.

In the figure:

100. a catheter tube body; 100a, opening the tube body; 10. a spiral main pipe; 11. a main pipe main hole; 12. a main side hole; 20. a screw secondary pipe; 21. a secondary side hole; 30. a fixed wing; 41. a Y-shaped connecting part; 42. a main pipe branch end; 43. a branch end of the secondary pipe; 51. a main pipe infusion joint; 52. a subsidiary tube transfusion joint.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed 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 at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the terms "comprises" or "comprising" are intended to specify the presence of stated features, quantities, steps, operations, elements, portions, or combinations thereof, but are not intended to preclude the presence or addition of one or more other features, quantities, steps, operations, elements, portions, or combinations thereof.

Referring to fig. 1, a structural diagram of a wall-sticking prevention central venous double-lumen catheter according to an embodiment of the present invention is disclosed. The double-lumen catheter of the anti-wall-sticking central vein comprises a double-lumen catheter, a Y-shaped tube and an infusion joint which are sequentially communicated. The double-lumen catheter comprises a catheter tube body 100, a spiral main tube 10 and a spiral auxiliary tube 20 which are arranged in the catheter tube body 100. The catheter tube 100 has a tube opening 100a at an end thereof remote from the Y-tube. The primary spiral pipe 10 and the secondary spiral pipe 20 are wound around each other to form a double-spiral structure. The outer side wall of the spiral main pipe 10 is provided with a main side hole 12, and the outer side wall of the spiral auxiliary pipe 20 is provided with an auxiliary side hole 21.

The mode that the double-cavity catheter, the Y-shaped pipe and the infusion joint are communicated in sequence is as follows: the Y-shaped pipe is provided with a Y-shaped connecting part 41, a main pipe branch end 42 and an auxiliary pipe branch end 43, and the Y-shaped connecting part 41 is communicated with the main pipe branch end 42 and the auxiliary pipe branch end 43 respectively. The spiral main pipe 10 and the spiral auxiliary pipe 20 are mutually wound to form an integral catheter with two spiral inner cavities, one end of the integral catheter is connected to a Y-shaped connecting part 41 of the Y-shaped pipe, and the other end of the integral catheter is an opening end. The spiral main pipe 10 is communicated with the main pipe branch end 42 through the Y-shaped connecting part 41, and the spiral auxiliary pipe 20 is communicated with the auxiliary pipe branch end 42 through the Y-shaped connecting part 41. The infusion connector comprises a main tube infusion connector 51 and an auxiliary tube infusion connector 52, the main tube infusion connector 51 is communicated with the main tube branch end 42 through a pipeline, and the auxiliary tube infusion connector 52 is communicated with the auxiliary tube branch end 43 through a pipeline.

After the main spiral pipe 10 and the auxiliary spiral pipe 20 are wound to form an integral catheter with two spiral cavities, the open end of the main spiral pipe 10, i.e. the end far away from the Y-shaped connection portion of the Y-shaped pipe, is a main pipe main hole 11. When blood purification treatment is performed, blood of a patient flows into the spiral main pipe 10 from the main pipe main hole 11 and the main side hole 12, then enters the blood purification treatment apparatus through the main pipe infusion connector 51 after passing through the Y-shaped connecting part 41 and the main pipe branch end 42 for purification, is output by the blood purification treatment apparatus, flows back to the auxiliary rotary pipe 20 through the auxiliary pipe infusion connector 52, passes through the auxiliary pipe branch end 43 of the Y-shaped pipe and the Y-shaped connecting part 41, and flows back to the body of the patient through the auxiliary side hole 21.

In the embodiment, the outer side walls of the spiral main pipe and the spiral auxiliary pipe are spirally distributed with a plurality of side holes, so that the catheter can be effectively prevented from being attached to the vessel wall or being blocked and closed by local thrombus, fibrin sheath, venous valve and the like due to various reasons; the spiral main pipe and the spiral auxiliary pipe are mutually wound to form an integral catheter with two spiral inner cavities, so that blockage caused by local compression can be effectively prevented, platelet activation induced by shearing force can be reduced, and thrombosis can be reduced.

In the embodiment, all the pipes such as the spiral main pipe, the spiral pair and the Y-shaped pipe are made of polyester ammonia materials with or without medicine loading, and compared with the traditional silicone tube, the silicone tube has the advantages of thin wall, high flow speed, high tensile strength, high tear strength and high flexibility, compact structure, no micropores, smooth surface, high thrust gradient and good softening at blood temperature, and is small in damage to the blood vessel wall. The drug loading is selected to effectively inhibit the growth of bacteria and prevent the formation of biofilm.

In one embodiment, the spiral main pipe 10 is provided with the main side hole 12 at a spiral section more than 1cm away from the main pipe main hole. The main side hole can be a plurality of, preferably 2-3, and is opened 1-2cm away from the main pipe main hole.

In one embodiment, the secondary side hole is formed in the spiral secondary pipe 20 at a spiral pipe section that is 3cm or more away from the main pipe main hole. The number of the secondary side holes can be multiple, preferably 2-3, and the secondary side holes are opened at a distance of 3-5cm from the main pipe main hole. The auxiliary side hole is arranged at a position farther from the main pipe main hole 11 than the main side hole from the main pipe main hole, so that blood recirculation can be effectively reduced, and blood purification efficiency is improved.

In one embodiment, the double lumen catheter is provided with fixation wings 30, and the fixation wings 30 are used for fixation on the body surface of a patient. For example, the fixation wings 30 may be secured to the patient's body surface by snaps, sutures, or the like, thereby securing the double lumen catheter to the patient.

The above embodiments are not intended to limit the present invention, and the present invention is not limited to the above examples, and the technical personnel in the technical field are in the present invention, which can also belong to the protection scope of the present invention.

Claims

1. The utility model provides a prevent pasting wall central venous double-chamber pipe which characterized in that: including two-chamber pipe, Y type pipe and the infusion that feeds through in proper order connect, two-chamber pipe includes the pipe body, arranges in spiral in the pipe body is responsible for and the spiral auxiliary pipe, the spiral be responsible for with the spiral auxiliary pipe intertwine, the lateral wall that the spiral was responsible for is equipped with main side opening, the lateral wall of spiral auxiliary pipe is equipped with vice side opening.

2. The anti-paring central venous dual-lumen catheter as claimed in claim 1, wherein: the Y-shaped pipe is provided with a Y-shaped connecting part, a main pipe branch end and an auxiliary pipe branch end, and the Y-shaped connecting part is respectively communicated with the main pipe branch end and the auxiliary pipe branch end; the spiral main pipe is communicated with the branch end of the main pipe through the Y-shaped connecting part, and the spiral auxiliary pipe is communicated with the branch end of the auxiliary pipe through the Y-shaped connecting part; the infusion connector comprises a main tube infusion connector and an auxiliary tube infusion connector, the main tube infusion connector is communicated with the branch end of the main tube, and the auxiliary tube infusion connector is communicated with the branch end of the auxiliary tube.

3. The anti-paring central venous double lumen catheter of claim 1, wherein: the spiral is responsible for the one end of keeping away from Y type pipe is responsible for the main hole, the spiral is responsible for and is in the distance be responsible for the spiral section of pipe more than 1cm of main hole and offer main side opening.

4. The anti-paring central venous dual-lumen catheter as claimed in claim 3, wherein: the main side hole is more than two, and the main side hole distance is 1-2cm from the main pipe main hole.

5. The anti-paring central venous dual-lumen catheter as claimed in claim 3, wherein: the spiral auxiliary pipe is arranged at a distance from the spiral pipe section more than 3cm away from the main pipe main hole and is provided with the auxiliary side hole.

6. The anti-paring central venous double lumen catheter of claim 5, wherein: the number of the auxiliary side holes is more than three, and the distance between the auxiliary side holes and the main pipe hole is 3-5cm.

7. The anti-paring central venous double lumen catheter of claim 1, wherein: the double-cavity catheter is provided with fixed wings, and the fixed wings are used for being fixed on the body surface of a patient.