CN209984771U

CN209984771U - Double-cavity radiography catheter

Info

Publication number: CN209984771U
Application number: CN201920504904.6U
Authority: CN
Inventors: 桂红; 刘瑞瑞
Original assignee: Shenzhen Kaisite Medical Polytron Technologies Inc
Current assignee: Shenzhen Kaisite Medical Polytron Technologies Inc
Priority date: 2019-04-15
Filing date: 2019-04-15
Publication date: 2020-01-24
Anticipated expiration: 2029-04-15

Abstract

The utility model discloses a two-chamber radiography pipe belongs to medical instrument technical field, can only diagnose, the treatment needs the problem design of performing the operation once more for solving current device. The utility model comprises a main body, a first cavity and a second cavity which are isolated from each other are arranged in the main body, and the first cavity and the second cavity extend along the axis of the main body respectively; an air outlet is arranged on the side wall or the top end of the first cavity, and the end head of the second cavity is a through hole for a guide wire to penetrate out of the tube main body and for a contrast agent to be injected into a blood vessel or a heart cavity; the double-cavity radiography catheter also comprises a medicine balloon wrapped outside the catheter main body, and the inside of the medicine balloon is communicated with the air outlet. The double-cavity radiography catheter of the utility model can make diagnosis and treatment be carried out simultaneously, and is not a catheter which has single use and can only carry out radiography function; the surface of the drug balloon is coated with drugs, so that a stent is not needed, and the self-relaxation and contraction characteristics of the blood vessel are maintained.

Description

Double-cavity radiography catheter

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a two-chamber radiography pipe.

Background

The cardiovascular angiography is to inject contrast medium into heart cavity or blood vessel rapidly via contrast catheter, to make the heart and blood vessel cavity develop under X-ray irradiation, and to photograph the development process of heart and blood vessel cavity by fast photography, television photography or video tape. The flowing sequence of blood containing contrast agent and the filling condition of the heart blood vessels can be seen according to the result of the development, thereby solving the physiological and anatomical changes of the heart and the blood vessels, knowing whether the heart blood vessels have pathological changes, where the pathological changes occur, the severity of the pathological changes and whether the heart blood vessels have dysfunction.

The existing angiocardiography is only a cardiovascular disease diagnosis method, and operation is needed again during treatment, so that secondary pain is caused to patients; moreover, the existing treatment methods are mostly to implant a stent, and patients need to take medicines for a long time after the operation to avoid thrombus formation and rejection reaction at the stent.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a double-cavity radiography conduit which can diagnose and treat in the same operation.

To achieve the purpose, the utility model adopts the following technical proposal:

a double-cavity contrast catheter comprises a catheter main body, wherein a first cavity and a second cavity which are mutually isolated are arranged in the catheter main body, and the first cavity and the second cavity respectively extend along the axis of the catheter main body; an air outlet is arranged on the side wall or the top end of the first cavity, and the end head of the second cavity is a through hole through which a guide wire penetrates out of the tube main body and a contrast agent is injected into a blood vessel or a heart cavity; the double-cavity radiography catheter further comprises a medicine balloon wrapped on the outer side of the catheter main body, and the interior of the medicine balloon is communicated with the air outlet.

Particularly, the air outlet is formed in the side wall of the first cavity, and a sealing cover is mounted at the top end of the first cavity.

In particular, the sealing cover is arranged obliquely and is located in the same plane as the edge of the through hole in the second chamber head.

Particularly, a medicine layer is formed on the surface of the medicine balloon.

In particular, the double-lumen contrast catheter further comprises a handle arranged at the tip of the catheter body, wherein the handle comprises a first inlet end communicated with the first cavity and a second inlet end communicated with the second cavity.

Particularly, the second inlet end and the pipe main body are coaxially arranged, and a set angle included angle is formed between the axis of the first inlet end and the axis of the pipe main body.

In particular, the angle α e [25 °,80 ° ] between the axis of the first inlet end and the axis of the pipe body.

Particularly, a fixing convex edge for fixing the vent pipe is arranged at the edge of the first inlet end.

In particular, the first inlet end and the second inlet end are integrally formed.

In particular, the drug balloon is located within the length of the tube body forward end 1/5.

The first cavity and the second cavity which are mutually isolated are arranged in the tube main body of the double-cavity radiography catheter, so that diagnosis and treatment can be carried out simultaneously, and the double-cavity radiography catheter is not a catheter which has a single purpose and can only carry out radiography function; the surface of the drug balloon is coated with drugs, so that a stent is not needed, and the self-relaxation and contraction characteristics of the blood vessel are maintained.

Drawings

Fig. 1 is a schematic structural view of a double-lumen angiography catheter provided by an embodiment of the present invention after a drug balloon is removed;

FIG. 2 is an enlarged view of a portion of the structure at A in FIG. 1;

FIG. 3 is a partial cross-sectional view of a tube body provided by an embodiment of the present invention;

fig. 4 is a schematic structural view of the drug balloon of the double-lumen angiography catheter according to the embodiment of the present invention after being expanded.

In the figure:

1. a tube body; 2. a guide wire; 3. a drug balloon; 11. a first chamber; 12. a second chamber; 13. an air outlet; 14. a through hole; 15. a sealing cover; 41. a first inlet end; 42. a second inlet end; 411. and fixing the convex edge.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

The present embodiment discloses a double-lumen angiography catheter, as shown in fig. 1 to 4, the double-lumen angiography catheter includes a tube main body 1, a handle disposed at the tip of the tube main body 1, and a drug balloon 3 disposed outside the tube main body 1. The tube body 1 is internally provided with a first cavity 11 and a second cavity 12 which are isolated from each other, the first cavity 11 and the second cavity 12 respectively extend along the axis of the tube body 1, and the guide wire 2 can be arranged in the second cavity 12 in a penetrating way. The drug balloon 3 is provided with a drug layer for treatment on the surface, and the drug layer is formed by piling up medicinal powder or liquid medicament.

The second chamber 12 terminates in a through-hole 14 for passage of the guide wire 2 out of the tube body 1 and for injection of contrast agent into the blood vessel or heart cavity. When the device is used, the guide wire 2 guides the main body 1 into a heart cavity or a blood vessel, the guide wire 2 is pulled out after reaching a set position, contrast agent is injected into the second cavity 12, and the physiological condition and the pathological change part of the heart cavity or the blood vessel are observed.

An air outlet 13 is arranged on the side wall of the first cavity 11, and the inner part of the medicine balloon 3 is communicated with the air outlet 13. According to the developing condition, the medicine balloon 3 is delivered to the lesion part, the air supply enters the first cavity 11 and is blown out from the air outlet 13, the medicine balloon 3 is expanded and expanded, and the blood vessel of the lesion part is expanded, so that the double purposes of diagnosis and treatment are achieved at the same time, and the pain of a patient is relieved.

For better therapeutic effect, the drug balloon 3 is located within the length of the front end 1/5 of the tube body 1. That is, the drug balloon 3 is located at a position close to the front end of the tube main body 1, and the drug balloon 3 can be accurately delivered to the lesion site with reference to the position of the front end of the tube main body 1 after the lesion site is determined. Of course, the air outlet 13 is not limited to be disposed on the sidewall of the first chamber 11, but may be disposed at the top end of the first chamber 11, so as to smoothly and conveniently expand the drug balloon 3.

The double-cavity radiography catheter can finish diagnosis and treatment in one operation, and avoid causing secondary pain to a patient; the design of the two cavities in the tube main body 1 ensures that the two operations of contrast agent injection and drug balloon 3 expansion are not interfered with each other, namely, diagnosis and treatment are not interfered with each other, thereby being beneficial to the smooth operation of diagnosis and treatment; the use of the drug balloon 3 can prevent the blood vessel after expansion from retracting, avoid causing secondary stenosis and blockage, simultaneously cancel the implantation of foreign matters such as metal stents, keep the self-relaxation and contraction characteristics of the blood vessel, avoid influencing the blood flow mode, and can not generate rejection reaction.

The air outlet 13 is arranged on the side wall of the first cavity 11, and the sealing cover 15 is mounted at the top end of the first cavity 11, so that air is prevented from being blown out from the position except the air outlet 13, and the medicine balloon 3 is prevented from being blown out. The sealing cover 15 is preferably arranged obliquely, the edge of the through hole 14 at the end of the second chamber 12 is also preferably arranged obliquely, and the sealing cover 15 and the edge of the through hole 14 are in the same plane. That is, the front end surface of the tube main body 1 is a slope, which contributes to reducing the resistance received when the tube main body 1 enters a blood vessel or a heart chamber, and to increasing the speed of the tube main body 1 passing through the blood vessel or the heart chamber.

The handle consists of a first inlet end 41 and a second inlet end 42 which are integrally formed, wherein the first inlet end 41 is communicated with the first chamber 11 and is used for introducing gas into the first chamber 11; the second inlet port 42 communicates with the second lumen 12 for threading the guidewire 2 or injecting contrast media.

The second inlet end 42 is arranged coaxially with the tube body 1 to facilitate insertion of the guide wire 2. The axis of the first inlet end 41 and the axis of the tube body 1 form a set angle, so that gas can be smoothly introduced without affecting the use of the second inlet end 42. Preferably, the angle α e [25 °,80 ° ] between the axis of the first inlet end 41 and the axis of the tube body 1 is larger, the overall structure of the handle is more compact, the first inlet end 41 and the second inlet end 42 do not interfere with the normal use of each other, and the gas does not receive too much resistance between the first inlet end 41 and the tube body 1, so as to avoid generating bubbles or noise.

The gas in the first chamber 11 is from a gas source connected by a line to the first inlet port 41. The edge of the first inlet end 41 is provided with a fixed convex edge 411, and a vent pipe (preferably, a rubber pipe or other elastic pipeline) is clamped on the fixed convex edge 411, so that the sealing performance is better, and gas is prevented from leaking out from the connection part between the vent pipe and the first inlet end 41.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. A double-cavity contrast catheter comprises a catheter main body (1), wherein a first cavity (11) and a second cavity (12) which are mutually isolated are arranged in the catheter main body (1), and the first cavity (11) and the second cavity (12) respectively extend along the axis of the catheter main body (1); the blood vessel or heart cavity contrast agent injection catheter is characterized in that an air outlet (13) is formed in the side wall or the top end of the first cavity (11), and the end of the second cavity (12) is a through hole (14) through which a guide wire (2) penetrates out of the catheter main body (1) and a contrast agent is injected into a blood vessel or a heart cavity; the double-cavity contrast catheter further comprises a medicine balloon (3) wrapped on the outer side of the catheter main body (1), and the inside of the medicine balloon (3) is communicated with the air outlet (13).

2. The double-lumen contrast catheter according to claim 1, wherein the air outlet hole (13) is provided on the side wall of the first chamber (11), and a sealing cover (15) is mounted on the top end of the first chamber (11).

3. The double-lumen contrast catheter as claimed in claim 2, characterized in that the sealing cover (15) is arranged obliquely, the sealing cover (15) lying in the same plane as the edge of the through hole (14) in the end of the second lumen (12).

4. The dual lumen angiographic catheter according to any of the claims 1 to 3, wherein the drug balloon (3) is formed with a drug layer on its surface.

5. The dual lumen contrast catheter according to any of claims 1 to 3, further comprising a handle provided at the tip of said tube body (1), said handle comprising a first inlet end (41) communicating with said first chamber (11), and a second inlet end (42) communicating with said second chamber (12).

6. The double-lumen angiography catheter according to claim 5, wherein the second inlet end (42) is coaxially arranged with the tube body (1), and an axis of the first inlet end (41) forms a set angle with an axis of the tube body (1).

7. The dual lumen contrast catheter of claim 6, wherein the angle α e [25 °,80 ° ] between the axis of the first inlet end (41) and the axis of the tube body (1).

8. The double-lumen angiography catheter according to claim 5, wherein a fixing ledge (411) for fixing a ventilation tube is provided at an edge of the first inlet port (41).

9. The dual lumen contrast catheter of claim 5, wherein the first inlet port (41) and the second inlet port (42) are integrally formed.

10. The dual lumen contrast catheter of any of claims 1 to 3, wherein the drug balloon (3) is located within the length of the tube body (1) forward end 1/5.