CN119792779A - Double lumen catheter - Google Patents

Abstract

A double-lumen opening catheter comprises a catheter body and a Y-shaped connector, wherein the catheter body comprises an inner lumen tube and an outer lumen tube, wherein the outer lumen tube is sleeved outside the inner lumen tube, an annular cavity is formed between the outer wall of the inner lumen tube and the inner wall of the outer lumen tube, and a plurality of side holes are arranged at the distal end of the outer lumen tube; in summary, the present invention integrates the functions of angiography, perfusion, and opening into one, and at the same time has the functions of conventional angiography catheters currently on the market, thereby providing a more efficient and safe solution for interventional surgery, and is expected to bring important changes in the field of vascular interventional treatment.

Description

Double-cavity opening catheter

Technical Field

The invention belongs to the technical field of medical appliances, and particularly relates to a double-cavity opening catheter.

Background

The contrast catheter is a key device for percutaneous angiography, has proper hardness, elasticity, softness and torsion, has good X-ray penetrating performance, and mainly has the functions of providing a catheter guide to enable a contrast agent to be smoothly introduced into a blood vessel to generate a contrast effect, is a medical instrument for injecting medicines or other liquids into the human body in a surgery or treatment process, is widely applied to various medical fields such as surgery, tumor treatment, anesthesia, emergency treatment and the like, is a medical instrument for recovering or improving the stenosis or blockage of the blood vessel, a pipeline (such as a bile duct and a urinary duct) in interventional surgery, has a single-cavity structure in the prior clinical use, has single function, needs to switch catheters with different functions back and forth for multiple times in a complex surgery process for performing surgery treatment, and is troublesome to operate.

Disclosure of Invention

The invention aims to provide a double-cavity opening catheter, which adopts a coaxial double-cavity structure, integrates multiple functions of radiography, opening, medicine injection and the like, avoids the operation of frequently replacing the catheter in the traditional operation, greatly shortens the operation time, reduces the physiological burden and risk possibly increased by a patient due to the prolonged operation time, reduces the catheter exchange, reduces the infection risk and the possibility of vascular injury, and improves the overall safety of the operation.

In order to solve the technical problems, the invention adopts the following technical scheme:

The double-cavity opening catheter comprises a catheter body and a Y-shaped joint, wherein the catheter body comprises an inner cavity pipe and an outer cavity pipe, the outer cavity pipe is sleeved outside the inner cavity pipe, an annular cavity channel is formed between the outer wall of the inner cavity pipe and the inner wall of the outer cavity pipe, and a plurality of side holes are formed in the distal end of the outer cavity pipe;

The Y-shaped connector is connected to the proximal end of the catheter body, a first connecting port and a second connecting port are arranged on the Y-shaped connector, the first connecting port is connected with the proximal end of the inner cavity tube, the second connecting port is connected to the side wall of the proximal end of the outer cavity tube, and the second connecting port is communicated with the annular cavity.

Further, the first connector and the second connector are both luer connectors.

Further, the inner cavity tube is made of high polymer materials.

Further, the outer cavity tube is composed of a metal tube and a high polymer material tube, wherein the metal tube is formed by winding a metal belt, and the high polymer material tube is adhered to the outer wall of the metal tube.

Compared with the prior art, the invention has the beneficial effects that:

(1) The catheter has enough hardness, the supporting property of the catheter is effectively improved in the operation process, and meanwhile, the catheter has certain flexibility, so that the product can be well adapted to various curved blood vessels;

(2) The double-cavity structure improves the operation efficiency and the safety, reduces the times of catheter exchange in operation, effectively shortens the operation time, and reduces the exposure time of medical workers under X rays;

(3) The product has the function of a contrast catheter for high-pressure contrast injection, has the function of a thrombolytic catheter for microinjection of thrombolytic drugs for external cavity, has sufficient supportability, and effectively solves the problem of opening and establishing a life channel of intractable thrombus.

(4) The material and the structure innovation are that the inner cavity tube adopts a high polymer material, has enough elasticity, can enlarge a catheter cavity channel when the contrast agent is injected at high pressure, can extrude the inner cavity to a certain extent when the medicine is injected in the annular cavity channel, and enlarges the injection space of the outer cavity;

(5) Contrast media may be injected through the catheter during the initial examination phase, which may be used if a vessel blockage is found to be severe;

In conclusion, the invention combines the functions of opening, radiography, perfusion and the like, has the function of the conventional radiography catheter in the market at the same time, provides a more efficient and safe solution for interventional operation, and is expected to bring important reform in the field of vascular interventional treatment.

Drawings

The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:

FIG. 1 is a schematic view of a dual lumen opening catheter according to the present invention;

FIG. 2 is a schematic view of the structure of a catheter body;

FIG. 3 is a cross-sectional view of a catheter body;

FIG. 4 is a schematic view of the structure of a Y-joint;

fig. 5 is an enlarged view at a in fig. 1.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The present invention is described in further detail below with reference to examples.

The invention provides a specific embodiment of a double-cavity opening catheter, which comprises the following steps:

As shown in fig. 1-5, the double-cavity opening catheter comprises a catheter body 1 and a Y-shaped joint 2, the catheter body 1 comprises an inner cavity tube 3 and an outer cavity tube 4, the inner cavity tube 3 is made of a high polymer material, the safety of the injection of contrast agent is ensured, the high polymer material is polyurethane, polycarbonate or polyether block amide, the outer cavity tube 4 is composed of a metal tube and a high polymer material tube, the metal tube is formed by winding a stainless steel belt, the high polymer material tube is adhered to the outer wall of the metal tube through a high Wen Resu process, sufficient supporting force is ensured, the strength and flexibility of the catheter are enhanced by winding the stainless steel belt, the supporting performance of the catheter is ensured, flexible operation in a complex vascular path is facilitated, and the damage to the vascular wall is reduced.

As shown in fig. 4, a stress diffusion tube 7 is arranged between the end of the Y-shaped joint 2 and the outer wall of the outer cavity tube 4, the stress diffusion tube 7 is made of high polymer elastic material, and the tube can be effectively prevented from being broken at the joint connection position when the tube body is bent.

The Y-shaped connector 2 is connected to the proximal end of the catheter body 1, the Y-shaped connector 2 is provided with a first connecting port 5 and a second connecting port 6, the first connecting port 5 and the second connecting port 6 are luer connectors and can be matched and connected with other devices with standard interfaces, the first connecting port 5 is connected with the proximal end of the inner cavity tube 3, the second connecting port 6 is connected to the proximal side wall of the outer cavity tube 4, the second connecting port 6 is communicated with the annular cavity channel 8, a stress diffusion tube 7 is arranged between the end of the Y-shaped connector 2 and the outer wall of the outer cavity tube 4, the stress diffusion tube 7 is made of high polymer elastic materials, the catheter can be effectively prevented from being broken at the joint connection position when the catheter body is bent, the Y-shaped connector 2 is provided with the first connecting port 5 and the second connecting port 6, the first connecting port 5 and the second connecting port 6 are standard connectors and can be matched and connected with other devices with the luer connectors, and the first connecting port 5 is connected with the proximal end of the inner cavity tube 3.

It should be noted that in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (4)

1. The double-cavity opening catheter is characterized by comprising a catheter body and a Y-shaped joint, wherein the catheter body comprises an inner cavity pipe and an outer cavity pipe, the outer cavity pipe is sleeved outside the inner cavity pipe, an annular cavity channel is formed between the outer wall of the inner cavity pipe and the inner wall of the outer cavity pipe, and a plurality of side holes are formed at the distal end of the outer cavity pipe;

The Y-shaped connector is connected to the proximal end of the catheter body, a first connecting port and a second connecting port are arranged on the Y-shaped connector, the first connecting port is connected with the proximal end of the inner cavity tube, the second connecting port is connected to the side wall of the proximal end of the outer cavity tube, and the second connecting port is communicated with the annular cavity.

2. The dual-lumen access catheter of claim 1 wherein the first port and the second port are luer ports.

3. The double-lumen opening catheter according to claim 2, wherein the inner lumen tube is made of a polymer material.

4. The dual-lumen opening catheter of claim 3 wherein the outer lumen comprises a metallic catheter and a polymeric catheter, the metallic catheter being wrapped with a metallic tape, the polymeric catheter being adhered to an outer wall of the metallic catheter.