CN212575345U

CN212575345U - Hemodialysis catheter

Info

Publication number: CN212575345U
Application number: CN201922496277.9U
Authority: CN
Inventors: 廖磊
Original assignee: GUANGZHOU JIANEN MEDICAL EQUIPMENT CO LTD
Current assignee: GUANGZHOU JIANEN MEDICAL EQUIPMENT CO LTD
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2021-02-23
Anticipated expiration: 2029-12-31

Abstract

The utility model relates to the technical field of medical equipment, a blood passes through pipe is disclosed, take over including the artery, the vein is taken over, the medicine is taken over and is pegged graft the pipe, the inside of pegging graft the pipe is equipped with the medicine cavity, be equipped with mutually independent artery cavity and vein cavity between the outer wall of medicine cavity and the inner wall of pegging graft pipe, the artery is taken over and is linked together with the artery cavity, the vein is taken over and is linked together with the vein cavity, the medicine is taken over and is linked together with the medicine cavity, be equipped with a plurality of first through-holes that stagger and distribute on the artery cavity, be equipped with a plurality of second through-holes that stagger and distribute on the vein cavity, the diameter of first through-hole. Adopt the utility model has the advantages of be difficult for discounting, and be difficult for causing the jam with the laminating of vascular wall, can guarantee the flow of dialysis.

Description

Hemodialysis catheter

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a blood passes through pipe.

Background

Hemodialysis pipe is adopted as interim dialysis passageway in present clinical treatment, and general hemodialysis pipe can punch in main chamber and side chamber and guarantee the flow of dialysis.

However, due to the problem of the perforation process, the side holes are generally located in the middle of the D-shaped catheter, and in order to ensure the dialysis flow, the side holes are relatively large and distributed on the same plane of the catheter, so that when negative pressure is formed in dialysis, the catheter is easily attached to the wall of the blood vessel, and the flow is reduced or the catheter is blocked.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem that a hemodialysis pipe is provided, it is difficult for discounting, and difficult and vascular wall laminating causes the jam, can guarantee the flow of dialysis.

In order to solve the technical problem, the utility model provides a blood passes through pipe, take over including the artery, the vein is taken over, the medicine is taken over and is pegged graft the pipe, the inside of pegging graft the pipe is equipped with the medicine cavity, the outer wall of medicine cavity with be equipped with mutually independent artery cavity and vein cavity between the inner wall of grafting pipe, the artery take over with artery cavity intercommunication, the vein take over with vein cavity intercommunication, the medicine take over with medicine cavity intercommunication, be equipped with a plurality of first through-holes that stagger the distribution on the artery cavity, be equipped with a plurality of second through-holes that stagger the distribution on the vein cavity, the diameter of first through-hole with the diameter of second through-hole is 1.7 mm-1.9 mm.

As the utility model discloses preferred scheme, first through-hole with the second through-hole all is equipped with 5.

As the preferred scheme of the utility model, the diameter of first through-hole with the diameter of second through-hole is 1.8 mm.

As the utility model discloses preferred scheme, adjacent contained angle between the axis of first through-hole is 60 degrees, and is adjacent contained angle between the axis of second through-hole is 60 degrees.

As the utility model discloses preferred scheme, adjacent be in between the first through-hole 3mm apart from in the length direction of grafting pipe, adjacent be in between the second through-hole 3mm apart from in the length direction of grafting pipe.

As the preferred proposal of the utility model, the medicine cavity and the inserting pipe are coaxially arranged.

As the preferred proposal of the utility model, the artery cavity and the vein cavity are symmetrically arranged.

As the utility model discloses preferred scheme, be equipped with artery anchor clamps on the artery is taken over, be equipped with vein anchor clamps on the vein is taken over.

As the preferred scheme of the utility model, the artery is taken over the vein take over with the medicine is taken over all through connecting portion with the grafting union coupling.

As the preferred proposal of the utility model, the inserting end of the inserting pipe is a cone.

For implementing the utility model discloses a hemodialysis pipe, compare with prior art, have following beneficial effect:

the utility model discloses a negative pressure that dialysis in-process hemodialysis pipe received can be reduced in the design of a plurality of first through-holes and a plurality of second through-holes, has guaranteed the flow of dialysis, adjacent between the first through-hole and adjacent all stagger each other at a distance of 3mm between the second through-hole, can enlarge the coverage of through-hole to a great extent, effectively prevent that hemodialysis pipe from forming the laminating with the vascular wall and leading to the flow to reduce and block up even to first through-hole and second through-hole are the aperture, can effectively prevent that hemodialysis pipe from folding down because of the through-hole is too big, ensure that the dialysis process moves smoothly. It is visible, the utility model discloses be difficult for discounting, and be difficult for causing the jam with the vascular wall laminating, can guarantee the flow of dialysis.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.

Fig. 1 is a schematic structural view of a hemodialysis catheter provided in the present invention;

FIG. 2 is a schematic view of the construction of the bayonet tube;

FIG. 3 is a schematic cross-sectional view taken along line A-A of the structure shown in FIG. 2;

fig. 4 is a schematic cross-sectional view along the direction B-B of the structure shown in fig. 2.

In the figure: 1. artery is taken over, 2, vein is taken over, 3, medicine is taken over, 4, the pipe of pegging graft, 5, medicine cavity, 6, artery cavity, 7, vein cavity, 61, first through-hole, 71, second through-hole, 8, artery anchor clamps, 9, vein anchor clamps, 10, connecting portion.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.

Referring to fig. 1 to 4, according to the preferred embodiment of the present invention, a hemodialysis catheter comprises an artery connection tube 1, a vein connection tube 2, a drug connection tube 3 and a connection tube 4, wherein a drug cavity 5 is disposed inside the connection tube 4, an artery cavity 6 and a vein cavity 7 which are independent of each other are disposed between an outer wall of the drug cavity 5 and an inner wall of the connection tube 4, the artery connection tube 1 is communicated with the artery cavity 6, the vein connection tube 2 is communicated with the vein cavity 7, the drug connection tube 3 is communicated with the drug cavity 5, a plurality of first through holes 61 which are distributed in a staggered manner are disposed on the artery cavity 6, a plurality of second through holes 71 which are distributed in a staggered manner are disposed on the vein cavity 7, and the diameters of the first through holes 61 and the second through holes 71 are both 1.7mm to 1.9 mm.

In this embodiment, the number of the first through holes 61 and the number of the second through holes 71 are 5, the diameters of the first through holes 61 and the diameters of the second through holes 71 are both 1.8mm, an included angle between axes of adjacent first through holes 61 is 60 degrees, an included angle between axes of adjacent second through holes 71 is 60 degrees, a distance between adjacent first through holes 61 in the length direction of the inserting pipe 4 is 3mm, and a distance between adjacent second through holes 71 in the length direction of the inserting pipe 4 is 3 mm.

The utility model discloses a design of a plurality of first through-holes 61 and a plurality of second through-hole 71 can reduce the negative pressure that dialysis in-process hemodialysis pipe received, has guaranteed the flow of dialysis, and is adjacent between the first through-hole 61 and adjacent all stagger each other at a distance of 3mm between the second through-hole 71, can to a great extent enlarge the coverage of through-hole, prevent effectively that the hemodialysis pipe from forming the laminating with the vascular wall and leading to the flow to reduce and block up even to first through-hole 61 and second through-hole 71 are the aperture, can prevent effectively that the hemodialysis pipe from rolling over because of the through-hole is too big and discounting, ensure that the dialysis process goes on smoothly. It is visible, the utility model discloses be difficult for discounting, and be difficult for causing the jam with the vascular wall laminating, can guarantee the flow of dialysis.

Illustratively, the drug cavity 5 is coaxially arranged with the insertion tube 4, and the artery cavity 6 is symmetrically arranged with the vein cavity 7. Due to the design, the structure of the hemodialysis catheter is more reasonable, the size and the shape of the arterial cavity 6 are consistent with those of the venous cavity 7, the flow can be better controlled, and the hemodialysis process is guaranteed to be carried out smoothly.

Illustratively, in order to better control the flow in the arterial and venous lumens 6 and 7, an arterial clamp 8 is provided on the arterial adapter 1 and a venous clamp 9 is provided on the venous adapter 2.

For example, in order to enable the arterial tube 1, the venous tube 2 and the drug tube 3 to be connected to the insertion tube 4 more firmly, the arterial tube 1, the venous tube 2 and the drug tube 3 are all connected to the insertion tube 4 by a connection portion 10.

For example, the insertion end of the insertion tube 4 is tapered in order to provide a better insertion of the insertion tube 4 into the body.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, therefore, the invention is not limited thereto.

Claims

1. A hemodialysis catheter is characterized by comprising an artery connecting pipe, a vein connecting pipe, a medicine connecting pipe and an inserting pipe, wherein a medicine cavity is arranged inside the inserting pipe, an artery cavity and a vein cavity which are mutually independent are arranged between the outer wall of the medicine cavity and the inner wall of the inserting pipe, the artery connecting pipe is communicated with the artery cavity, the vein connecting pipe is communicated with the vein cavity, the medicine connecting pipe is communicated with the medicine cavity, a plurality of first through holes distributed in a staggered mode are arranged on the artery cavity, a plurality of second through holes distributed in a staggered mode are arranged on the vein cavity, and the diameter of each of the first through holes and the diameter of each of the second through holes are both 1.7 mm-1.9 mm.

2. A hemodialysis catheter according to claim 1, wherein each of the first and second through holes comprises 5 through holes.

3. A hemodialysis catheter according to claim 1, wherein the first through hole and the second through hole each have a diameter of 1.8 mm.

4. The hemodialysis catheter according to claim 1, wherein the included angle between the axes of the adjacent first through holes is 60 degrees, and the included angle between the axes of the adjacent second through holes is 60 degrees.

5. The hemodialysis catheter of claim 1, wherein the distance between adjacent first through holes is 3mm in the length direction of the insertion tube, and the distance between adjacent second through holes is 3mm in the length direction of the insertion tube.

6. The hemodialysis catheter of claim 1, wherein the drug chamber is coaxially disposed with the insertion tube.

7. A hemodialysis catheter according to claim 1, wherein the arterial lumen is symmetrically disposed with respect to the venous lumen.

8. The hemodialysis catheter of claim 1, wherein an arterial clamp is provided on the arterial adapter tube, and a venous clamp is provided on the venous adapter tube.

9. The hemodialysis catheter according to claim 1, wherein the arterial adapter tube, the venous adapter tube and the drug adapter tube are connected to the insertion tube through connection portions.

10. A hemodialysis catheter according to claim 1, wherein the insertion end of the insertion tube is tapered.