An interventional balloon dilatation catheter

Abstract

The application discloses a balloon dilatation catheter for interventional therapy, which comprises a leading tube front section, an expansion assembly connected to one end of the leading tube front section, a leading tube rear section connected to the end of the expansion assembly away from the leading tube front section, and a rubber film fixedly connected to the inner wall of the front port of the leading tube front section, and relates to the technical field of dilatation catheters. The balloon dilatation catheter can solve the problem that the leading tube is easily punctured into the human body during the insertion process.

Description

Technical Field

[0001] This invention relates to the field of dilation catheter technology, and in particular to a balloon dilation catheter for interventional therapy. Background Technology

[0002] Interventional therapy is a technique that uses catheters to perform diagnosis and treatment inside blood vessels or non-vascular structures. In interventional therapy, balloon dilation catheters are a commonly used tool to dilate narrowed or blocked blood vessels to restore blood flow.

[0003] In existing technologies, after the balloon dilation catheter is inserted into the human body, it is necessary to use a laparoscope to perform the insertion operation. During the insertion process, in order to avoid the catheter puncturing the human body, the experience of medical staff is required. Therefore, we propose a balloon dilation catheter for interventional treatment. Summary of the Invention

[0004] To address the problem that balloon dilation catheters are prone to puncturing the human body during insertion, the purpose of this invention is to provide a balloon dilation catheter for interventional therapy.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A balloon dilation catheter for interventional therapy includes a front section of the inlet tube, one end of which is connected to a dilation component, and the end of the dilation component away from the front section of the inlet tube is connected to a rear section of the inlet tube. A rubber membrane is fixedly connected to the inner wall of the front port of the front section of the inlet tube.

[0007] The expansion assembly includes a plastic rigid tube, a rubber diaphragm fitted over the plastic rigid tube, a first annular plate and a second annular plate fixedly connected to the inner wall of the plastic rigid tube, a through hole communicating with the inside of the rubber diaphragm on the inner wall of the plastic rigid tube, a core column slidably fitted on the inner wall of the plastic rigid tube between the first annular plate and the second annular plate, and a spring disposed inside the plastic rigid tube between the first annular plate and the core column.

[0008] Preferably, the inner wall of the front end of the inlet tube is chamfered at an angle of 15-45 degrees; the end of the plastic rigid tube near the first annular plate is connected to the end of the inlet tube away from the rubber membrane; the end of the plastic rigid tube near the second annular plate is connected to the rear section of the inlet tube.

[0009] Preferably, the outer wall of the plastic rigid tube has an annular groove, and the two ends of the rubber sheath are sealed and fixedly connected to the inner walls at both ends of the annular groove.

[0010] Preferably, the two ends of the spring abut against the first annular plate and the core post, respectively.

[0011] Preferably, the through hole is located close to the second annular plate.

[0012] Preferably, the end of the inlet tube furthest from the expansion component is connected to an access tube, the outer wall of the access tube is connected to a connector for connecting to an air pump, and the end of the inlet tube furthest from the inlet tube is fixedly connected to a fixing head.

[0013] Preferably, the two ends of the fixing head are slidably connected with traction wires, one end of the traction wire passes through the inlet pipe and the rear section of the guide pipe in sequence, and is fixedly connected to one end of the core column; the traction wire is a steel wire, and one end of the traction wire is threadedly connected to a limit plate.

[0014] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0015] 1. In this invention, gas is injected, which pushes the core column toward the first annular plate. The core column pushes the gas in the front section of the inlet tube toward the rubber membrane, inflating the rubber membrane. Then, the balloon dilation catheter for interventional treatment is inserted, avoiding puncture of the human body.

[0016] 2. In this invention, the limiting plate is pulled by the traction line and makes the limiting plate engage with the fixing head. At this time, the outer wall of the core column is still blocked at the through hole to prevent gas from entering the rubber diaphragm. The limiting plate is twisted to move it away from the fixing head, and then the air pump continuously pumps gas, causing the core column to deviate from the through hole. The gas enters the rubber diaphragm and bulges out, expanding.

[0017] 3. In this invention, after the rubber sheath bulges out, the traction wire is pulled to move the core column, which blocks the through hole. Then, the balloon dilation catheter for interventional treatment can be rotated and pulled.

[0018] 4. After the expansion of the present invention is completed, the air pump releases air, pushes the traction line to push the core column, the core column deviates from the through hole, and then the rubber diaphragm releases air. Attached Figure Description

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of a part of the structure of the present invention.

[0022] In the diagram: 1. Front section of the inlet tube; 2. Expansion assembly; 3. Rear section of the inlet tube; 4. Rubber diaphragm; 5. Access tube; 6. Traction line; 201. Plastic rigid tube; 202. Rubber sheath; 203. First annular plate; 204. Second annular plate; 205. Core post; 206. Spring; 207. Annular groove; 208. Through hole; 501. Connector; 502. Fixing head; 601. Limiting plate. Detailed Implementation

[0023] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0024] Please see Figures 1 to 2 It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding and reading. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0025] This invention provides a technical solution: a balloon dilation catheter for interventional treatment, including a front section 1 of the inlet tube, one end of the front section 1 of the inlet tube is connected to a dilation component 2, the end of the dilation component 2 away from the front section 1 of the inlet tube is connected to a rear section 3 of the inlet tube, and a rubber membrane 4 is fixedly connected to the inner wall of the front port of the front section 1 of the inlet tube. The rubber membrane 4 is bulging to avoid puncturing the human body.

[0026] The expansion assembly 2 includes a plastic rigid tube 201, on which a rubber diaphragm 202 is fitted, the rubber diaphragm 202 bulging out for expansion; a first annular plate 203 and a second annular plate 204 are fixedly connected to the inner wall of the plastic rigid tube 201, and a through hole 208 communicating with the inside of the rubber diaphragm 202 is opened on the inner wall of the plastic rigid tube 201 between the first annular plate 203 and the second annular plate 204, a core column 205 is slidably fitted on the inner wall of the plastic rigid tube 201 between the first annular plate 203 and the core column 205, and a spring 206 is provided inside the plastic rigid tube 201 between the first annular plate 203 and the core column 205.

[0027] The inner wall of the front end of the inlet tube 1 is beveled at an angle of 15-45 degrees. The rubber membrane 4 is bulging, and the beveled surface of the front end of the inlet tube 1 fits against the rubber membrane 4 to avoid cutting the rubber membrane 4.

[0028] One end of the plastic rigid tube 201 near the first annular plate 203 is connected to the end of the inlet tube 1 away from the rubber membrane 4; the other end of the plastic rigid tube 201 near the second annular plate 204 is connected to the rear section 3 of the inlet tube; an annular groove 207 is formed on the outer wall of the plastic rigid tube 201, and the two ends of the rubber membrane 202 are sealed and fixedly connected to the inner walls of the two ends of the annular groove 207; the two ends of the spring 206 are respectively pressed against the first annular plate 203 and the core post 205. A through hole 208 is set near the second annular plate 204.

[0029] The end of the inlet tube 3 furthest from the expansion component 2 is connected to an access tube 5. The outer wall of the access tube 5 is connected to a connector 501 for connecting to an air pump. The end of the inlet tube 3 furthest from the inlet tube 3 is fixedly connected to a fixing head 502.

[0030] The two ends of the fixed head 502 are slidably connected with traction wires 6. One end of the traction wire 6 passes through the inlet pipe 5 and the rear section 3 of the inlet pipe in sequence, and is fixedly connected to one end of the core column 205. The traction wire 6 is a steel wire, and one end of the traction wire 6 is threadedly connected to a limit piece 601.

[0031] Connector 501 connects to an air pump, which pumps in gas. The gas pushes the core 205 toward the first annular plate 203. The core 205 pushes the gas in the inlet tube 1 toward the rubber diaphragm 4, inflating the rubber diaphragm 4. The traction line 6 pulls the limiting plate 601, causing it to engage with the fixing head 502. At this moment, the outer wall of the core 205 is still blocked at the through hole 208, preventing gas from entering the rubber diaphragm 202. The inlet tube 1 is then inserted into the human body. When the expansion assembly 2 reaches the required expansion position, the limiting plate 601 is rotated. 1. Move it away from the fixed head 502, then the air pump continuously pumps gas, causing the core column 205 to deviate from the through hole 208. Then the gas enters the rubber sheath 202 and bulges, causing expansion. After the rubber sheath 202 bulges, pull the traction line 6 to pull the core column 205, causing it to block the through hole 208. Then the balloon dilation catheter for interventional treatment can be rotated and pulled. After the dilation is completed, the air pump releases the gas, pushes the traction line 6 to push the core column 205, causing the core column 205 to deviate from the through hole 208, and then the rubber sheath 202 releases the gas.

[0032] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A balloon dilation catheter for interventional therapy, comprising a pre-inlet segment (1), one end of which is connected to a dilation component (2), and the end of the dilation component (2) away from the pre-inlet segment (1) is connected to a post-inlet segment (3), characterized in that: A rubber membrane (4) is fixedly connected to the inner wall of the front port of the inlet tube (1). The expansion assembly (2) includes a plastic rigid tube (201), a rubber diaphragm (202) is sleeved on the plastic rigid tube (201), a first annular plate (203) and a second annular plate (204) are fixedly connected to the inner wall of the plastic rigid tube (201), a through hole (208) communicating with the inside of the rubber diaphragm (202) is opened on the inner wall of the plastic rigid tube (201) between the first annular plate (203) and the second annular plate (204), a core column (205) is slidably sleeved on the inner wall of the plastic rigid tube (201) between the first annular plate (203) and the core column (205), and a spring (206) is provided inside the plastic rigid tube (201) between the first annular plate (203) and the core column (205); The end of the plastic rigid tube (201) near the first annular plate (203) is connected to the end of the inlet tube (1) away from the rubber membrane (4); The end of the inlet tube (3) away from the expansion component (2) is connected to an access tube (5). The outer wall of the access tube (5) is connected to a connector (501) for connecting to an air pump. The end of the access tube (5) away from the inlet tube (3) is fixedly connected to a fixing head (502). The two ends of the fixed head (502) are slidably connected with traction wires (6). One end of the traction wire (6) passes through the access pipe (5) and the rear section (3) of the inlet pipe in sequence, and is fixedly connected to one end of the core column (205). The traction wire (6) is a steel wire, and one end of the traction wire (6) is threadedly connected to a limiting piece (601).

2. The balloon dilation catheter for interventional therapy according to claim 1, characterized in that: The inner wall of the front end of the inlet tube (1) is set at a chamfered angle of 15-45 degrees; the end of the plastic rigid tube (201) near the second annular plate (204) is connected to the rear end of the inlet tube (3).

3. The balloon dilation catheter for interventional therapy according to claim 1, characterized in that: The outer wall of the plastic rigid tube (201) is provided with an annular groove (207), and the two ends of the rubber sheath (202) are sealed and fixedly connected to the inner walls at both ends of the annular groove (207).

4. The balloon dilation catheter for interventional therapy according to claim 1, characterized in that: The two ends of the spring (206) are respectively pressed against the first annular plate (203) and the core column (205).

5. The balloon dilation catheter for interventional therapy according to claim 1, characterized in that: The through hole (208) is located near the second annular plate (204).

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