A steam ablation balloon catheter

Abstract

The utility model relates to steam ablation balloon catheter technical field, especially a kind of steam ablation balloon catheter, including cap and outer tube, the inner wall of cap is connected with the outer wall rear of outer tube by screw thread, the inner wall of outer tube is connected with sealing structure, the front of outer tube is connected with conveying structure, the front of conveying structure is connected with first interface, gas is sent into first gasbag and second gasbag by inner tube in sealing structure, when two gasbags support to support digestive tract, form a sealed space in pathological change site, then steam generator works and sends steam into outer tube by left side elbow pipe, steam reaches pathological change position, and heating is realized to ablation, subsequently, the air pump of right side straight pipe is extracted to make two gasbags shrink, then outer tube is extracted in digestive tract, can, improve the ablation effect of steam ablation balloon catheter, eliminate the use limitation of steam ablation balloon catheter.

Description

Technical Field

[0001] This utility model relates to the field of steam ablation balloon catheter technology, specifically a steam ablation balloon catheter. Background Technology

[0002] The steam ablation balloon catheter can create a sealed space at the lesion site by the collision of two balloons, and then perform lesion ablation in conjunction with the operation of steam and refrigerant.

[0003] For example, a temperature-feedback steam ablation balloon catheter with announcement number "CN219742865U" has a balloon connected to the treatment end of the gas delivery tube. A steam delivery channel is formed between the steam delivery branch, the central tube, and the gas delivery tube. The temperature feedback device includes a sensing end and a connecting end. The sensing end is located in the steam delivery channel and extends into the gas delivery tube, while the connecting end is connected to an external circuit board. Based on the attenuation of the steam output at the treatment end, the temperature range of the steam at the input end is controlled, thereby effectively controlling the treatment time and preventing the steam at the input end from being too low, which would affect the treatment effect and prolong the treatment time. However, in the use of the steam ablation balloon catheter, there is only one balloon, which cannot form a sealed space at the lesion site in the digestive tract. When steam and refrigerant are applied to the lesion site, the temperature cannot reach the ideal effect due to the lack of a sealed space, reducing the ablation effect of the steam ablation balloon catheter and resulting in limitations in its use. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that the reduced ablation effect of the steam ablation balloon catheter leads to the limitation of its use, and to propose a steam ablation balloon catheter.

[0005] To achieve the above objectives, this utility model provides the following technical solution: Design a steam ablation balloon catheter, including a cap and an outer tube. The inner wall of the cap is threaded to the outer wall of the outer tube. The inner wall of the outer tube is connected to a sealing structure. The front of the outer tube is connected to a delivery structure. The front of the delivery structure is connected to a first interface. The outer side of the front of the delivery structure is connected to a second interface.

[0006] Preferably, the sealing structure includes an inner tube and a first airbag, the outer wall of the inner tube is connected to the inner wall of the outer tube, the outer wall of the inner tube is connected to the inner wall of the first airbag, and a second airbag is connected to the rear of the outer wall of the inner tube.

[0007] Preferably, the inner sides of both the first and second airbags are fixedly connected to the outer wall of the outer tube.

[0008] Preferably, the conveying structure includes a round pipe and a bent pipe, the rear end face of the round pipe is connected to the front face of the outer pipe, the left and right sides of the round pipe are respectively connected to the inner side of the bent pipe, and a straight pipe is fixedly connected to the front face of the round pipe.

[0009] Preferably, the rear end face of the straight tube is connected to the front face of the inner tube.

[0010] Preferably, the front side of the bent pipe is connected to the rear end face of the first interface, and the front side of the straight pipe is fixedly connected to the rear end face of the second interface.

[0011] The steam ablation balloon catheter proposed in this utility model has the following advantages: gas is delivered into the first and second balloons through the inner tube in the sealed structure. At this time, the two balloons inflate and support the digestive tract, forming a sealed space at the lesion site. Then, the steam generator works to deliver steam to the outer tube through the curved tube on the left. When the steam reaches the lesion site, it heats the lesion site to achieve ablation. Subsequently, the air pump in the straight tube on the right evacuates the air, causing the two balloons to shrink. Then, the outer tube is withdrawn from the digestive tract. This improves the ablation effect of the steam ablation balloon catheter and eliminates the limitations of its use. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 A schematic diagram showing the connection structure between the inner tube, the first airbag, and the second airbag; Figure 3 for Figure 2 A schematic diagram of the structure of A in the middle; Figure 4 for Figure 1 A schematic diagram showing the connection relationship between the medium-sized round pipe, the bent pipe, and the straight pipe.

[0013] In the diagram: 1. Cap, 2. Sealing structure, 201. Inner tube, 202. First airbag, 203. Second airbag, 3. Conveying structure, 301. Round tube, 302. Bend, 303. Straight tube, 4. Outer tube, 5. First interface, 6. Second interface, 7. Plug. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings: Example

[0015] Please see Figure 1-4In this embodiment, a steam ablation balloon catheter includes a cap 1 and an outer tube 4. The inner wall of the cap 1 is threadedly connected to the rear of the outer wall of the outer tube 4. When the cap 1 is subjected to force and rotates backward, it can disengage from the rear of the outer wall of the outer tube 4. The inner wall of the outer tube 4 is connected to a sealing structure 2. The front of the outer tube 4 is connected to a delivery structure 3. The front of the delivery structure 3 is connected to a first interface 5. The outer side of the front of the delivery structure 3 is connected to a second interface 6.

[0016] The sealing structure 2 includes an inner tube 201 and a first airbag 202. The outer wall of the inner tube 201 is connected to the inner wall of the outer tube 4. The outer wall of the inner tube 201 is connected to the inner wall of the first airbag 202. A second airbag 203 is connected to the rear of the outer wall of the inner tube 201. Both the first airbag 201 and the second airbag 203 are spherical. The inner sides of the first airbag 202 and the second airbag 203 are fixedly connected to the outer wall of the outer tube 4. Gas is delivered through the inner tube 201 into the first balloon 202 and the second balloon 203 via the sealed structure 2. The two balloons then inflate the digestive tract, creating a sealed space at the lesion site. The steam generator then delivers steam to the outer tube 4 through the left-side curved tube 302. When the steam reaches the lesion, it heats the lesion to achieve ablation. Subsequently, the air pump in the right-side straight tube 303 evacuates the air, causing the two balloons 202 to shrink. The outer tube 4 is then withdrawn from the digestive tract. This process improves the ablation effect of the steam ablation balloon catheter and eliminates the limitations of using steam ablation balloon catheters.

[0017] The conveying structure 3 includes a circular pipe 301 and a bend 302. The rear end face of the circular pipe 301 is connected to the front face of the outer pipe 4. The left and right sides of the circular pipe 301 are connected to the inner side of the bend 302 respectively. The bend 302 is connected to the steam generator. A straight pipe 303 is fixedly connected to the front face of the circular pipe 301. The straight pipe 303 is connected to the air pump. The rear end face of the straight pipe 303 is connected to the front face of the inner pipe 201. The front face of the bend 302 is connected to the rear end face of the first interface 5. The front face of the straight pipe 303 is fixedly connected to the rear end face of the second interface 6.

[0018] Working principle: Use of steam ablation balloon catheters: First, connect the left straight tube 303 to the air pump's inlet, and the right straight tube 303 to the air pump's outlet. Next, connect the left bent tube 302 to the steam generator's filling port, and the right bent tube 302 to the steam generator's return port. Using an endoscope, under endoscopic visualization, move the outer tube 4, gradually inserting it into the digestive tract. Simultaneously, the outer tube 4, carrying the first airbag 202 and the second airbag 203, enters the digestive tract, positioning the lesion between the two airbags. When the air pump is working, gas is sent through the straight pipe 303 on the left to the first airbag 202 and the second airbag 203 through the inner pipe 201. At this time, the two airbags are inflated to support the digestive tract and form a sealed space at the lesion site. Then, the steam generator works to send steam to the outer pipe 4 through the curved pipe 302 on the left. When the steam reaches the lesion site, it heats the lesion site to achieve ablation. Then, the air pump in the straight pipe 303 on the right evacuates the air, causing the two airbags 202 to shrink. Then, the outer pipe 4 is pulled out of the digestive tract.

[0019] The above operation can be performed when connecting the left and right side bends 302 to the refrigerant equipment to ablate the diseased refrigerant. Example

[0020] Please see Figure 1-4 In this embodiment, a steam ablation balloon catheter further includes plugs 7, with the outer walls of multiple plugs 7 respectively inserted into the inner walls of the first interface 5 and the second interface 6.

[0021] Working principle: When placing the steam ablation balloon catheter, the inner walls of the first interface 5 and the second interface 6 can be inserted into the plug 7, which seals the interface position with its own rubber material.

[0022] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. A steam ablation balloon catheter, comprising a cap (1) and an outer tube (4), characterized in that: The inner wall of the cap (1) is threaded to the outer wall of the outer tube (4) at the rear. The inner wall of the outer tube (4) is connected to a sealing structure (2). The front of the outer tube (4) is connected to a conveying structure (3). The front of the conveying structure (3) is connected to a first interface (5). The outer side of the front of the conveying structure (3) is connected to a second interface (6).

2. The steam ablation balloon catheter according to claim 1, characterized in that: The sealing structure (2) includes an inner tube (201) and a first airbag (202). The outer wall of the inner tube (201) is connected to the inner wall of the outer tube (4). The outer wall of the inner tube (201) is connected to the inner wall of the first airbag (202). A second airbag (203) is connected to the rear of the outer wall of the inner tube (201).

3. The steam ablation balloon catheter according to claim 2, characterized in that: The inner sides of the first airbag (202) and the second airbag (203) are both fixedly connected to the outer wall of the outer tube (4).

4. The steam ablation balloon catheter according to claim 1, characterized in that: The conveying structure (3) includes a round pipe (301) and a bent pipe (302). The rear end face of the round pipe (301) is connected to the front face of the outer pipe (4). The left and right sides of the round pipe (301) are connected to the inner side of the bent pipe (302) respectively. A straight pipe (303) is fixedly connected to the front face of the round pipe (301).

5. The steam ablation balloon catheter according to claim 4, characterized in that: The rear end face of the straight tube (303) is connected to the front face of the inner tube (201).

6. The steam ablation balloon catheter according to claim 4, characterized in that: The front of the bent pipe (302) is connected to the rear end face of the first interface (5), and the front of the straight pipe (303) is fixedly connected to the rear end face of the second interface (6).

Images