KR20240038498A - Balloom catheter for radiofrequency ablation compliant - Google Patents

Abstract

A balloon catheter device for high-frequency local cauterization is disclosed.
This stent electrode local heat treatment device includes a catheter that can be moved to the lesion site of the tissue, a balloon provided to be expandable at the end of the catheter, and a balloon provided to be inflatable at the end of the catheter and capable of remembering the shape of the balloon's expanded state. It may include shape memory electrodes.

Description

Balloon catheter device for high-frequency local cauterization {BALLOOM CATHETER FOR RADIOFREQUENCY ABLATION COMPLIANT}

The present invention relates to a balloon catheter device for high-frequency local cauterization.

In clinical practice, malignant stenotic disease in luminal organs is treated through surgery, stents, or drug-eluting stents.

However, in the case of surgical surgery, the patient's recovery period is very long and the risk of complications is high, and in the case of stent and drug-eluting stent procedures, the patient's recovery period is very short due to minimally invasive procedures, but restenosis There are problems and risks that ultimately require removal of the stent.

Meanwhile, research and development on various types of high-frequency electrodes (needle, catheter, plate) are being actively conducted recently.

However, needle-shaped electrodes are more invasive and are focused on relatively superficial organs. Catheters and plate-shaped electrodes have a limitation in that it is difficult to evenly cauterize the inner walls of luminal organs.

In particular, in curved lesion areas, only the area in contact with the electrode is cauterized, and since electrodes with limited length and shape are attached, there is a problem that the length and range of the lesion area that can be cauterized are limited.

Public Patent Publication No. 10-2010-0105365 (published on September 29, 2010)

Embodiments of the present invention were invented against the above background, and provide a balloon catheter device for high-frequency local cauterization that can evenly perform high-frequency cautery treatment on the inner wall of the target organ, regardless of whether the organ is curved or not. I want to do it.

According to one aspect of the present invention, a catheter capable of moving to a lesion site in a tissue; a balloon provided to be inflatable at the end of the catheter; and a shape memory electrode that is provided to be removable from the end of the catheter and is capable of remembering the shape of the balloon in an expanded state, wherein the shape memory electrode remembers the shape of the lesion site when the balloon is expanded. A balloon catheter device for high-frequency local cauterization may be provided that is in close contact with the lesion site to correspond and can adjust the cauterization range for the lesion site according to changes in the exposure site.

In addition, a first magnet provided at the end of the shape memory electrode; And a balloon catheter device for high-frequency local cauterization may be provided, further comprising a second magnet provided at the end of the catheter so that the first magnet and the magnetic force act.

Additionally, a balloon catheter device for high-frequency local cauterization may be provided that further includes a guide wire for guiding the catheter to the lesion site of the tissue.

Additionally, the catheter includes an outer tube; an inner tube disposed inside the outer tube and to which the balun is connected to an end; And a balloon catheter device for high-frequency local cauterization can be provided, including an insulating tube that is movably supported inside the outer tube and provides an electrode passage through which the shape memory electrode can enter and exit.

In addition, the catheter may be provided as a balloon catheter device for high-frequency local cauterization, further including a knob provided on the insulating tube to move the insulating tube in the outer tube.

In addition, the catheter includes a guide tip connected in communication with the end of the inner tube and having a flow path through which a guide wire can penetrate; a marker provided at an end of the inner tube to confirm the position of the inner tube; And a balloon catheter device for high-frequency local cauterization may be provided, further comprising a hub connected to the rear end of the outer tube.

In addition, the inner tube includes an inner tube; a gas flow path formed on one side of the inner pipe to allow movement of gas for expansion of the balloon; And a balloon catheter device for high-frequency local cauterization may be provided, providing a wire flow path formed on the other side inside the inner tube so that the guide wire can be inserted and moved.

Additionally, the hub includes a hub body portion; A balloon catheter device for high-frequency local cauterization may be provided, including a hub slit portion extending forward and backward from the side wall of the hub body portion so that the knob is exposed from the outer tube and can be moved.

In addition, the shape memory electrode moves the insulating tube within the outer tube due to movement of the knob moved in the hub slit portion, so that the degree of exposure to the lesion area changes, thereby changing the cauterization range for the lesion area. A balloon catheter device for controlled high-frequency local cauterization may be provided.

Additionally, the balloon includes a portion surrounded by the shape memory electrode when inflated at the lesion site of the tissue, and a portion exposed to the lesion site when inflated at the lesion site of the tissue, and exposed to the lesion site. A balloon catheter device for high-frequency local cauterization may be provided, at least some of which have a convex shape toward the lesion site.

In addition, the balun includes a portion surrounded by the shape memory electrode when inflated at the lesion site of the tissue, and a portion exposed to the lesion site and in contact with the lesion site when inflated at the lesion site of the tissue. A balloon catheter device for local cauterization may be provided.

According to embodiments of the present invention, by grafting an electrode with an adjustable cauterization range to a balloon catheter, local luminal organs (e.g., esophagus, duodenum, biliary tract, pancreas, large intestine, small intestine, etc.) with malignant stenotic disease are targeted. There is an advantage in that radiofrequency thermal ablation treatment can be performed.

In addition, according to the embodiments of the present invention, there is an advantage that effective local radiofrequency thermal ablation treatment is possible for the touristic organ whose diameter is not constant due to stenosis and the tortuous organ by adapting to the curvature of the organ.

In addition, according to embodiments of the present invention, by applying a shape memory electrode (for example, Nitinol wire) to a compliant balloon catheter that can adapt to the curvature of the organ, there is an advantage that the high-frequency electrode can be sufficiently contacted to suit the shape of the lesion. there is.

In addition, according to embodiments of the present invention, there is an advantage that local radiofrequency heat treatment is possible with a single catheter by designing a shape memory electrode to be inserted into a compliant balloon catheter.

Figure 1 is a configuration diagram showing a stent electrode local heat treatment device according to an embodiment of the present invention.
Figure 2 is a state diagram showing a state when the balloon is expanded in the stent electrode local heat treatment device according to an embodiment of the present invention.
Figure 3 is an enlarged view showing the "AA" portion of Figure 1.
Figure 4 is an enlarged view showing the "BB" portion of Figure 1.
Figure 5 is a state diagram showing the operating state of the knob of the stent electrode local heat treatment device according to an embodiment of the present invention.
Figure 6 is a state diagram showing a state in which a guide wire is inserted into a lesion site according to an embodiment of the present invention.
Figure 7 is a state diagram showing a state in which the stent electrode local heat treatment device according to an embodiment of the present invention is guided to the lesion site along the guide wire.
Figure 8 is a state diagram showing a state in which the formation memory electrode of the stent electrode local thermal treatment device according to an embodiment of the present invention is deployed at the lesion site.
Figure 9 is a state diagram showing a state in which the balloon of the stent electrode local heat treatment device according to an embodiment of the present invention is expanded at the lesion site.
Figure 10 is a state diagram illustrating a state in which local heat treatment is performed with the formation memory electrode of the stent electrode local heat treatment device in close contact with the lesion site according to an embodiment of the present invention.
Figure 11 is a state diagram showing a state in which the stent electrode local heat treatment device according to an embodiment of the present invention is recovered to the lesion site.

Hereinafter, specific embodiments for implementing the spirit of the present invention will be described in detail with reference to the drawings.

In addition, when describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description will be omitted.

In addition, when a component is mentioned as being 'connected', 'supported', 'connected', 'supplied', 'delivered', or 'contacted' with another component, it is directly connected, supported, connected, or connected to that other component. It may be supplied, delivered, or contacted, but it should be understood that other components may exist in the middle.

The terms used in this specification are merely used to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly dictates otherwise.

In addition, it should be noted in advance that expressions such as upper, lower, and side in this specification are explained based on the drawings, and may be expressed differently if the direction of the object in question changes. For the same reason, in the accompanying drawings, some components are exaggerated, omitted, or schematically shown, and the size of each component does not entirely reflect the actual size.

Additionally, terms including ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by these terms. These terms are used only to distinguish one component from another.

As used in the specification, the meaning of "comprising" is to specify a specific characteristic, area, integer, step, operation, element and/or component, and to specify another specific property, area, integer, step, operation, element, component and/or group. It does not exclude the existence or addition of .

Hereinafter, the specific configuration of the stent electrode local heat treatment device according to an embodiment of the present invention will be described with reference to FIGS. 1 to 11.

Referring to Figures 1 to 4, the balloon catheter device 10 according to an embodiment of the present invention uniformly performs high-frequency cautery treatment on the lesion site (B) of the target organ regardless of whether the organ is curved. It can be implemented easily. This balloon catheter device 10 may include a catheter 100, a balloon 200, a shape memory electrode 300, a first magnet 410, a second magnet 420, and a guide wire 500.

Specifically, the catheter 100 may be provided in the form of a probe that can be moved to the lesion site (B) of the tissue. The catheter 100 may be guided to the lesion site (B) of the tissue where the lesion occurred by the guide wire 500. When the catheter 100 is located in the tissue lesion area (B), the shape memory electrode 300 can perform thermal ablation on the tissue lesion using heat energy (high frequency energy).

The catheter 100 may include an outer tube 110, an inner tube 120, an insulating tube 130, a knob 140, a guide tip 150, a marker 160, and a hub 170. The outer tube 110 may be provided in the form of a tube that entirely surrounds the inner tube 120 and the insulating tube 130. The inner tube 120 and the insulating tube 130 may enter and exit the front end of the outer tube 110, and the rear end of the outer tube 110 may be connected to the hub 170.

The outer tube 110 may include an outer pipe portion 111 and an outer partition wall portion 112. The outer pipe portion 111 may be provided in a tube shape with an inner diameter that is at least larger than the combined outer diameter of the inner pipe portion 121 and the insulating tube 130. At least a portion of the outer pipe portion 111, for example, an outer partition wall portion 112 may be formed in the rear portion of the outer pipe portion 111.

The outer partition 112 may be provided in the form of a partition extending from the inner center of the outer pipe part 111 in the front-back direction. The outer partition wall portion 112 may partition at least a portion of the outer pipe portion 111, that is, the inner space of the rear portion of the outer pipe portion 111 in the vertical direction. The inner tube 120 and the insulating tube 130 may be independently arranged in the space defined by the outer partition 112.

The inner tube 120 may be provided inside the outer tube 110. The inner tube 120 may be entered and exited from an end of the outer tube 110. The inner tube 120 may be relatively moved inside the outer tube 110 along the front-to-back direction of the outer tube 110 . In this embodiment, the inner tube 120 has a structure in which the front end of the inner tube 120 can be moved in and out while being relatively moved along the front and rear direction of the outer tube 110, but the present invention is not limited to this, and in some cases, the outer tube 110 As 110 is relatively moved along the front and rear direction of the inner tube 120, the structure may be changed to allow the front end of the inner tube 120 to enter and exit.

A balun 200 may be provided at the end of the inner tube 120, and a cone-shaped guide tip 150 may be installed at the end of the inner tube 120. The inner tube 120 may supply gas (eg, air) to the balloon 200 and may provide a flow path that guides the movement of the guide wire 500. This inner tube 120 may include an inner pipe portion 121, a gas passage portion 122, and a wire passage portion 123. The inner pipe portion 121 may be provided in a tube shape with an outer diameter smaller than the inner diameter of the outer tube 110. The inner pipe portion 121 may be divided into one inner side and the other inner side through a partition wall. A gas passage portion 122 and a wire passage portion 123 may be formed on one inner side and the other inner side of the inner pipe portion 121.

The gas flow path portion 122 may provide a flow path through which gas can move for expansion of the balloon 200. The gas flow path portion 122 may be a channel having a semi-circular cross section on one inner side of the inner pipe portion 121. The gas flow path unit 122 can receive gas from a separate gas supply device and deliver the supplied gas to the balun 200. In order to transfer the gas in the gas flow path portion 122 to the balun 200, a through hole (not shown) may be formed in the outer wall of the inner tube 120 equipped with the balun 200.

The wire passage portion 123 may provide a movable passageway into which the guide wire 500 is inserted. The wire passage portion 123 may be a channel having a semi-circular cross-section on the other inner side of the inner pipe portion 121. With the guide wire 500 moved to the lesion site (B) of the tissue where the lesion occurred, the wire passage portion 123 of the inner tube 121 is inserted into the guide wire 500, and then the balloon catheter device ( If 10) is moved entirely along the guide wire 500, the balloon catheter device 10 can be accurately and safely moved to the lesion site (B) of the tissue.

The insulating tube 130 may provide an electrode passage through which the shape memory electrode 300 can enter and exit. The inner diameter of the insulating tube 130 may have a diameter that is at least larger than the outer diameter of the shape memory electrode 300. The insulating tube 130 can prevent the shape memory electrode 300 from contacting the outside while surrounding the shape memory electrode 300.

The insulating tube 130 may be made of a material that can insulate the shape memory electrode 300 from the outside. As an example, the insulating tube 130 may be a tube made of Teflon (PTFE: polytetrafluoroethylene). Teflon has chemical resistance, heat resistance, and low dielectric constant, so it can effectively block heat conduction of the shape memory electrode 300.

The insulating tube 130 may be movably supported within the outer tube 110 . With the shape memory electrode 300 in a fixed position, when the insulating tube 130 is moved in the front and rear directions of the balloon catheter device 10, the shape memory electrode 300 changes according to the change in movement of the insulating tube 130. The exposed area may change. As an example, when the balloon 200 is inflated at the lesion site (B) and the shape memory electrode 300 is in close contact with the lesion site (B), the insulating tube 130 is positioned before and after the balloon catheter device 10. When moved in this direction, the exposed portion of the shape memory electrode 300 may change due to the movement of the insulating tube 130. If the exposed area of the shape memory electrode 300 is changed, the cauterization range for the lesion area (B) can be adjusted. The movement of the insulating tube 130 can be controlled by the knob 140.

The knob 140 may be understood as a switch for moving the insulating tube 130 in the outer tube 110. The knob 140 may be formed to protrude from the outer diameter surface of the rear end of the insulating tube 130 . The knob 140 may penetrate the hub slit portion 172 of the hub 170 and be exposed to the outside of the hub 170.

Referring to Figure 5, with the shape memory electrode 300 in a fixed position, when the knob 140 is moved in the forward direction of the balloon catheter device 10, the insulating tube ( Since 130) moves in the entire direction of the balloon catheter device 10, the insulating tube 130 can reduce the exposed area of the shape memory electrode 300. And while the shape memory electrode 300 is fixed, when the knob 140 is moved backward of the balloon catheter device 10, the insulating tube 130 is moved backward by the knob 140. Since it is moved in the rear direction of (10), the insulating tube 130 can increase the exposed area of the shape memory electrode 300.

The guide tip 150 may be connected to the end of the inner tube 120 in communication. A passage through which the guide wire 500 can penetrate may be formed inside the guide tip 150. The guide tip 150 may be a tip provided in a cone shape. Since the guide tip 150 is provided in a cone shape at the end of the inner tube 120, the guide tip 150 can easily penetrate into the interior of the organ.

The marker 160 may be an indicator for confirming the position of the end of the inner tube 120. The marker 160 may be a radiopazue marker. The markers 160 may be provided as a pair spaced apart in the front and rear directions by a preset length at the end of the inner tube 120. By checking the pair of markers 160 using an

The hub 170 may be connected to the rear end of the outer tube 110. This hub 170 may include a hub body portion 171 and a hub slit portion 172. A flow path through which the inner tube 120 and the insulating tube 130 can move may be formed in the inner space of the hub body portion 171. A hub slit portion 172 may be formed on the side wall of the hub body portion 171.

The hub slit portion 172 may be a long groove extending from the side wall of the hub body portion 171 in the front and rear direction of the balloon catheter device 10. At least a portion of the knob 140 may be exposed to the hub slit portion 172. The hub slit portion 172 may provide a path for the knob 140 to move forward and backward. When the knob 140 moves forward in the hub slit portion 172, the insulating tube 130 may move in the forward direction due to the forward movement of the knob 140. When the knob 140 moves backward in the hub slit portion 172, the insulating tube 130 may be moved backward by the backward movement of the knob 140.

The balloon 200 can be understood as a balloon that can be expanded when gas is injected. The balun 200 may be provided at the end of the catheter 100, more specifically, at the end of the inner tube 120. The balloon 200 can receive gas required for expansion through the gas flow path portion 122 of the inner tube 120. When the balloon 200 is inflated at the lesion site B of the tissue, the outer surface of the balloon 200 may be in contact with the lesion site B.

An electrode groove (not shown) may be formed on the outer surface of the balun 200. The electrode groove may have a groove shape corresponding to the shape of the shape memory electrode 300 that the shape memory electrode 300 remembers. When the balun 200 is expanded, at least a portion of the shape memory electrode 300 is seated in the electrode groove, so the shape memory electrode 300 can be stably positioned on the outer surface of the balun 200.

When the balloon 200 is inflated at the lesion site (B) of the tissue, the balloon 200 may include a portion surrounded by the shape memory electrode 300 and a portion exposed to the lesion site (B). At least a portion of the portion exposed to the lesion area (B) may have a convex shape toward the lesion area (B). In addition, when the balloon 200 is inflated at the lesion site (B) of the tissue, the balloon 200 may include a portion surrounded by the shape memory electrode and a portion exposed to the lesion site (B) and in contact with the lesion site. You can.

The shape memory electrode 300 may be a formative memory material capable of shape memory of the expanded shape of the balun 200. As an example, the shape memory electrode 300 may be an integrated nitinol wire capable of shape memory. Of course, the shape memory electrode 300 may be made of various types of shape memory materials that can remember the shape of the balun 200 in an expanded state in addition to nitinol wire.

The shape memory electrode 300 may be shaped to correspond to the lesion site (B) so that it can adhere closely to the tissue lesion. As an example, the shape memory electrode 300 may be in the shape of a spring twisted into a whirlpool shape to have an outer diameter corresponding to the inner diameter of the lesion site (B). The shape memory electrode 300 can generate heat energy by receiving power from a separate energy supply device. The shape memory electrode 300 is in contact with the lesion area (B) and heat energy is provided to the lesion area (B), thereby performing high-frequency thermal ablation treatment on the lesion area (B).

The shape memory electrode 300 may be at least partially surrounded by the insulating electrode of the catheter 100. And the shape memory electrode 300 can be entered and exited from the end of the catheter 100. With the insulating electrode exposed in the inner tube 120, when the insulating electrode is moved in the rear direction of the balloon catheter device 10, the shape memory electrode 300 may be exposed to the outside.

The first magnet 410 may be provided at the front end of the shape memory electrode 300. The first magnet 410 may exert an attractive force with the second magnet 420 by magnetic force. The first magnet 410 may be coupled to or separated from the second magnet 420 by magnetic force.

The second magnet 420 may be provided at the end of the catheter 100 to be in contact with the first magnet 410. As an example, the second magnet 420 may be provided at the end of the inner tube 120. The second magnet 420 may be a magnet that exerts an attractive force due to magnetic force with the first magnet 410. If the first magnet 410 is the S pole, the second magnet 420 may be the N pole, and if the first magnet 410 is the N pole, the second magnet 420 may be the S pole.

The guide wire 500 may be provided in the form of a wire for guiding the catheter 100 to the lesion site B (B) generated in the patient's tissue (for example, tissue within the biliary tract). While the guide wire 500 is moved to the lesion site (B) of the tissue where the lesion has occurred, the balloon catheter device 10 may be inserted and moved to the guide wire 500.

Hereinafter, the operation and effects of the balloon catheter device having the above-described configuration will be described.

Referring to FIG. 6, in order to introduce the balloon catheter device 10 into the lesion area (B) of the luminal organ with malignant stenotic disease, first, the guide wire 500 is inserted into the lesion area (B).

Referring to FIG. 7, when the guide wire 500 is located at the lesion site (B), the balloon catheter device 10 is inserted into the guide wire 500 and the balloon catheter device 10 is inserted into the guide wire 500. ) and move it to the lesion site (B). Whether the balloon catheter device 10 is accurately positioned at the lesion site (B) can be confirmed through the marker 160 provided on the balloon catheter device 10.

Referring to Figure 8, when the end of the balloon catheter device 10 where the balloon 200 and the shape memory electrode 300 are located at the lesion site (B), the shape memory electrode 300 is connected to the balloon catheter device 10. By deploying in , the shape memory electrode 300 is exposed to the lesion area (B). The shape memory electrode 300 exposed at the lesion site (B) is expanded and maintained in a whirlpool shape, which is the memorized shape.

Referring to FIG. 9, in a state in which the shape memory electrode 300 is deployed in a whirlwind shape, gas is provided to the balloon 200 to expand the balloon 200, so that the shape memory electrode 300 is positioned at the lesion site (B). adhere closely to

Referring to Figure 10, when the shape memory electrode 300 is in close contact with the lesion area (B), power is supplied to the shape memory electrode 300. The powered shape memory electrode 300 can provide heat energy to the lesion area (B), thereby performing high-frequency heat treatment (high-frequency cauterization) on the lesion area (B). If high-frequency cauterization becomes unbalanced while high-frequency cautery is in progress, high-frequency cautery is performed on the desired area of the lesion site (B) by moving the insulating tube 130 in the forward or backward direction of the balloon catheter device 10. can do.

Referring to FIG. 11, when radiofrequency heat treatment for the lesion area (B) is completed, the balloon 200 and the shape memory electrode 300 are returned to the end of the catheter 100 of the balloon catheter device 10, and then the balloon is The catheter device (10) is recovered from the lesion site (B).

As described above, the present invention can perform local radiofrequency thermal ablation treatment on luminal organs with targeted malignant stenotic disease by grafting an electrode with an adjustable cauterization range to a balloon catheter, and can perform local radiofrequency thermal ablation treatment on luminal organs with target malignant stenotic disease, and Effective local high-frequency thermal ablation treatment is possible for tourist organs and tortuous organs, and by applying a shape memory electrode to a compliant balloon catheter that can adapt to the curvature of the organ, the high-frequency electrode can be sufficiently contacted to suit the shape of the lesion. It is designed to allow insertion of shape-memory electrodes into a compliant balloon catheter, and has excellent advantages, such as enabling local radiofrequency heat treatment with a single catheter.

Although embodiments of the present invention have been described above as specific embodiments, this is merely an example, and the present invention is not limited thereto, and should be construed as having the widest scope following the basic ideas disclosed in this specification. A person skilled in the art may implement a pattern of a shape not specified by combining/substituting the disclosed embodiments, but this also does not depart from the scope of the present invention. In addition, a person skilled in the art can easily change or modify the embodiments disclosed based on the present specification, and it is clear that such changes or modifications also fall within the scope of the present invention.

10: Balloon catheter device
100: catheter 110: outer tube
120: inner tube 121: inner tube
122: gas flow path part 123: wire flow path part
130: Insulating tube 140: Knob
150: Guide tip 160: Marker
170: Hub 171: Hub body part
172: Hub slit part
200: Balun
300: Shape memory electrode
410: first magnet 420: second magnet
500: Guide wire

Claims (11)

A catheter that can be moved to the lesion site in the tissue;
a balloon provided to be inflatable at the end of the catheter; and
It is provided to be removable at the end of the catheter, and includes a shape memory electrode capable of remembering the shape of the balloon in an expanded state,
The shape memory electrode is
When the balloon is inflated, it adheres to the lesion area so as to correspond to the shape of the lesion area and adheres to the expanded balloon.
Balloon catheter device for high-frequency local cauterization. According to claim 1,
A first magnet provided at an end of the shape memory electrode; and
Further comprising a second magnet provided at the end of the catheter so that the first magnet and the magnetic force exert an attractive force,
Balloon catheter device for high-frequency local cauterization. According to claim 1,
Further comprising a guide wire for guiding the catheter to the lesion site of the tissue,
Balloon catheter device for high-frequency local cauterization. According to claim 1,
The catheter is
outer tube;
an inner tube disposed inside the outer tube and to which the balun is connected to an end; and
Comprising an insulating tube that is movably supported inside the outer tube and provides an electrode passage through which the shape memory electrode can enter and exit,
Balloon catheter device for high-frequency local cauterization. According to claim 4,
The catheter is
Further comprising a knob provided on the insulating tube to move the insulating tube in the outer tube,
Balloon catheter device for high-frequency local cauterization. According to claim 4,
The catheter is
a guide tip connected in communication with the end of the inner tube and having a flow path through which a guide wire can pass;
a marker provided at an end of the inner tube to confirm the position of the inner tube; and
Further comprising a hub connected to the rear end of the outer tube,
Balloon catheter device for high-frequency local cauterization. According to claim 4,
The inner tube is
Inner duct;
a gas flow path formed on one side of the inner pipe to allow movement of gas for expansion of the balloon; and
Comprising a wire flow path formed on the other side inside the inner tube so that the guide wire can be inserted and moved,
Balloon catheter device for high-frequency local cauterization. According to claim 6,
The herb is
Herbal body part; and
A hub slit portion extending forward and backward from the side wall of the hub body portion so that the knob is exposed from the outer tube and can be moved,
Balloon catheter device for high-frequency local cauterization. According to claim 8,
The shape memory electrode is
As the insulating tube is moved within the outer tube by the movement of the knob moved in the hub slit portion, the degree of exposure to the lesion area changes and the cauterization range for the lesion area is adjusted.
Balloon catheter device for high-frequency local cauterization. According to claim 1,
The balun is,
A portion surrounded by the shape memory electrode when expanded at the lesion site of the tissue, and a portion exposed to the lesion site when expanded at the lesion site of the tissue,
At least some of the parts exposed to the lesion site have a convex shape toward the lesion site,
Balloon catheter device for high-frequency local cauterization. According to claim 1,
The balun is,
Comprising a portion surrounded by the shape memory electrode when expanded at the lesion site of the tissue, and a portion exposed to the lesion site and contacting the lesion site when expanded at the lesion site of the tissue,
Balloon catheter device for high-frequency local cauterization.