CN113633875A

CN113633875A - Double-cavity radiography catheter

Info

Publication number: CN113633875A
Application number: CN202111001052.7A
Authority: CN
Inventors: 俞选民; 徐君烈; 王晓白; 王伟
Original assignee: Sinova Kunshan Medical Technology Co ltd
Current assignee: Sinova Kunshan Medical Technology Co ltd
Priority date: 2021-08-30
Filing date: 2021-08-30
Publication date: 2021-11-12

Abstract

The invention relates to the technical field of medical instruments, and particularly discloses a double-cavity radiography catheter which comprises a Y-shaped joint, an outer tube, a metal rotary cutting tube, an inner tube and a developing ring, wherein the outer tube is sleeved outside the metal rotary cutting tube; one end of the outer pipe and one end of the inner pipe are welded and sealed, and the other end of the outer pipe and the other end of the inner pipe are connected with the Y-shaped joint; the Y-shaped joint is provided with a first interface and a second interface, the first interface is directly connected with the inner cavity of the inner pipe, and the second interface is connected with the interlayer gaps of the outer pipe, the metal rotary cutting pipe and the inner pipe; a punching area is arranged at one end of the outer pipe, and a through hole is formed in the outer pipe of the punching area; two groups of developing rings are arranged on the inner pipe corresponding to the punching area; the two interfaces of the Y connector provided by the invention can be used for carrying out contrast by injecting contrast medium.

Description

Double-cavity radiography catheter

Technical Field

The invention relates to the technical field of medical instruments, in particular to a double-cavity radiography catheter.

Background

With the development of interventional radiology, angiography has become an important clinical diagnostic method, and plays an irreplaceable role in interventional therapy in particular. Angiography plays an important role in the diagnosis and treatment of head and neck and central nervous system diseases, cardiac macrovascular diseases, and tumor and peripheral vascular diseases. However, the function of the common radiography catheter in the current market is simpler, the catheter needs to be replaced for many times in the operation process, the operation process is complicated, the medical cost of a patient is increased, and meanwhile, the common radiography tip is also blunt and soft and cannot pass through a stenotic or occlusive segment of the vascular lesion. Therefore, a novel double-cavity contrast catheter is designed.

Disclosure of Invention

The invention aims to provide a multifunctional catheter integrating radiography, opening and medicine perfusion, wherein a blocked blood vessel is opened by strong supporting force provided by a metal tube, the conical tip of the catheter enables the catheter to smoothly enter a lesion/blocked section, a side hole of the catheter can inject liquid medicine to a specified position of the blood vessel, and a middle hole of the catheter can inject the liquid medicine to the specified position of the blood vessel by connecting a high-pressure injection device. The guide wire used in cooperation with the catheter is a conventional guide wire, so that the product cost can be saved, the treatment cost can be reduced, the operation convenience can be improved, and the operation time can be shortened.

In order to achieve the purpose, the invention provides the following technical scheme: a double-cavity radiography catheter comprises a Y-shaped joint, an outer pipe, a metal rotary cutting pipe, an inner pipe and a developing ring, wherein the outer pipe is sleeved outside the metal rotary cutting pipe; one ends of the outer pipe and the inner pipe are welded and sealed, and the other ends of the outer pipe and the inner pipe are connected with a Y-shaped joint; the Y-shaped joint is provided with a first interface and a second interface, the first interface is directly connected with the inner cavity of the inner pipe, and the second interface is connected with interlayer gaps among the outer pipe, the metal rotary cutting pipe and the inner pipe; a punching area is arranged at one end of the outer pipe, and a through hole is formed in the outer pipe of the punching area; and two groups of developing rings are arranged on the inner pipe corresponding to the punching area, and the length of the punching area is 2 cm-10 cm.

Preferably, the first interface and the second interface are both standard luer connectors and are two cavity inlets of the catheter.

Preferably, the distal end of the catheter is provided with a tip, which is tapered.

Preferably, the metal rotary-cut pipe is a gradual rotary-cut metal pipe, and the rotary-cut density gradually decreases from the welding end to the Y-shaped joint end.

Preferably, the outer pipe is a plastic pipe, and the outer pipe is sleeved outside the metal rotary cutting pipe.

Preferably, the head end of the outer tube is shapeable into different specific shapes.

Compared with the prior art, the invention has the beneficial effects that: the double-cavity radiography catheter provided by the invention is provided with two cavity channels, the first interface can be connected with high-pressure radiography equipment to inject liquid medicine, and the second interface can be connected with an injector to inject the liquid medicine and flow out of the side hole to enter a specified position of a blood vessel; the conical tip part of the catheter can be smoothly inserted into the lesion/occlusion section, and the catheter is positioned on the lesion/occlusion section; the developing ring on the inner tube can accurately indicate the length and the position of the side hole on the blood vessel, and the gradual change type metal rotary cutting tube composite plastic outer tube can provide better pushing performance and tracking performance.

Drawings

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

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is an enlarged view of FIG. 1 at B;

FIG. 4 is a schematic view of a head end area of the present invention in a different shape;

reference numbers in the figures: 1. a Y-shaped joint; 2. a first interface; 3. a second interface; 4. an outer tube; 5. cutting a pipe by metal rotation; 6. an inner tube; 7. a punching area; 8. a developing ring; 9. a tip.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1 to 3, the present invention provides a technical solution: a double-cavity radiography conduit comprises a Y-shaped joint 1, an outer pipe 4, a metal rotary cutting pipe 5, an inner pipe 6 and a developing ring 8, wherein the outer pipe 4 is sleeved outside the metal rotary cutting pipe 5, and the metal rotary cutting pipe 5 is sleeved outside the inner pipe 6; the outer pipe 4 and the inner pipe 6 are welded and sealed at one end, and the other end is connected with the Y-shaped joint 1; the Y-shaped joint 1 is provided with a first connector 2 and a second connector 3, the first connector 2 is directly connected with the inner cavity of the inner pipe 6, and the second connector 3 is connected with interlayer gaps of the outer pipe 4, the metal rotary cutting pipe 5 and the inner pipe 6; a punching area 7 is arranged at one end of the outer pipe 4, and a through hole is formed in the outer pipe 4 of the punching area 7; two groups of developing rings 8 are arranged on the inner pipe 6 corresponding to the punching area 7, and the length of the punching area 7 is 2 cm-10 cm; the outer tube head end may be shaped in different specific shapes.

Further, the first connector 2 and the second connector 3 are both standard luer connectors and are two cavity inlets of the catheter.

Further, the end of the catheter is provided with a tip 9, and the tip 9 is conical.

Further, the metal rotary-cut tube 5 is a gradual rotary-cut metal tube, and the rotary-cut density gradually decreases from the welding end to the Y-shaped joint end.

Further, the outer pipe 4 is a plastic pipe, and the outer pipe 4 is sleeved outside the metal rotary cutting pipe 5.

Further, the head end of the outer tube may be shaped in different specific shapes.

The working principle is as follows: in practical application, a guide wire penetrates from the tip end 9, then enters the inner tube 6, and penetrates out of the first interface 2 at the other end, after the guide wire is withdrawn, the first interface 2 can be connected with high-pressure contrast equipment, and liquid medicine is injected at high pressure; after reaching the target position of the blood vessel, the liquid medicine is pushed by hand to enter from the second interface 3 and then enters the interlayer gaps of the outer tube 4, the metal rotary cutting tube 5 and the inner tube 6, and the bottom end of the interlayer gap is sealed by the tip 9, so that the liquid medicine can be discharged from the through hole of the punching area 7 only. The arrangement of the tip 9 is convenient for the whole catheter to be inserted into the lesion/occlusion section; two groups of developing rings 8 are arranged on the inner tube 6 corresponding to the punching area 7, so that the catheter can indicate the length and the position of the side hole in the blood vessel.

The first interface 2 and the second interface 3 are standard luer connector interfaces, so that other instruments or equipment can be conveniently connected; arranging the first interface 2 and the inner tube 6 as a guide wire channel and a drug administration/contrast channel; a plurality of through holes are arranged around the punching area 7 of the outer wall of the outer tube 4, and liquid medicine flows out from a plurality of directions, so that uniform administration/radiography is facilitated.

In a specific application process, the region of the end of the outer tube 4 provided with the tip 9 can be shaped into different shapes so as to meet different blood vessel requirements.

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. A dual lumen contrast catheter, comprising: the developing device comprises a Y-shaped joint (1), an outer pipe (4), a metal rotary cutting pipe (5), an inner pipe (6) and a developing ring (8), wherein the outer pipe (4) is sleeved on the outer side of the metal rotary cutting pipe (5), and the metal rotary cutting pipe (5) is sleeved on the outer side of the inner pipe (6); one ends of the outer pipe (4) and the inner pipe (6) are welded and sealed, and the other ends are connected with the Y-shaped joint (1); the Y-shaped joint (1) is provided with a first connector (2) and a second connector (3), the first connector (2) is directly connected with an inner cavity of the inner pipe (6), and the second connector (3) is connected with interlayer gaps of the outer pipe (4), the metal rotary cutting pipe (5) and the inner pipe (6); a punching area (7) is arranged at one end of the outer pipe (4), and a through hole is formed in the outer pipe (4) of the punching area (7); the inner tube (6) corresponding to the punching area (7) is provided with two groups of developing rings (8), and the length of the punching area (7) is 2 cm-10 cm.

2. The dual lumen contrast catheter of claim 1, wherein: the Y-shaped joint (1) is respectively connected with the outer pipe (4), the metal rotary cutting pipe (5) and the inner pipe (6) to form two cavity channels.

3. The dual lumen contrast catheter of claim 1, wherein: one end of the outer pipe (4) and the inner pipe (6) which are welded is provided with a tip (9), and the tip is of a conical structure.

4. The dual lumen contrast catheter of claim 1, wherein: the metal rotary cutting pipe (5) is a gradual rotary cutting metal pipe, and the rotary cutting density is gradually reduced from the welding end to the end of the Y-shaped joint (1).

5. The dual lumen contrast catheter of claim 1, wherein: the length of the punching area (7) at the front end of the guide pipe is 2-10 cm.