CN220213678U

CN220213678U - Balloon catheter device

Info

Publication number: CN220213678U
Application number: CN202321693407.8U
Authority: CN
Inventors: 雍婷婷; 钱林权; 刘广志
Original assignee: Suzhou Shengke Intelligent Technology Co ltd
Current assignee: Suzhou Shengke Intelligent Technology Co ltd
Priority date: 2023-06-30
Filing date: 2023-06-30
Publication date: 2023-12-22
Anticipated expiration: 2033-06-30

Abstract

Embodiments of the present application provide a balloon catheter device comprising: a catheter holder; a guide wire; the proximal end of the guide wire is fixed on the guide tube seat; a balloon; the balloon is sleeved on the periphery of the guide wire, and the distal end of the balloon is connected to the guide wire in a sealing manner; the distal end of the guidewire is located outside the balloon; an outer conduit; the outer catheter is sleeved on the periphery of the guide wire; the proximal end of the outer catheter is fixed on the catheter seat, and the distal end of the outer catheter is connected with the proximal end of the balloon; the outer catheter inner wall and the guidewire define a channel for infusing a liquid into the balloon. Performing interventional operation by using the balloon catheter device disclosed by the embodiment of the application, wherein the distal end of the guide wire is positioned outside the balloon to play a role in guiding; the guide wire and the saccule are fixed into a whole, so that synchronous delivery and synchronous withdrawal of the guide wire and the saccule are realized, the operation is simple and convenient, and the operation risk is low.

Description

Balloon catheter device

Technical Field

The application relates to the technical field of medical instruments, in particular to a balloon catheter device.

Background

Balloon catheters are a medical interventional device that may be used for angioplasty, stent delivery, dilation, shockwave energy calcification fragmentation, etc. In one embodiment, a balloon catheter includes:

a catheter holder;

an inner catheter; the proximal end of the inner catheter is fixed on the catheter seat; the inner catheter has a guidewire lumen;

a balloon; the balloon is sleeved on the periphery of the inner catheter, and the distal end of the balloon is connected to the inner catheter in a sealing manner; the distal end of the inner catheter is located outside the balloon;

an outer conduit; the outer guide pipe is sleeved on the periphery of the inner guide pipe; the proximal end of the outer catheter is fixed on the catheter seat, and the distal end of the outer catheter is connected with the proximal end of the balloon; the outer catheter inner wall and the inner catheter outer wall define a channel for infusing a liquid into the balloon.

When the balloon catheter of the embodiment is used for interventional operation, the balloon catheter is slidably sleeved on the periphery of a guide wire through a guide wire lumen, the guide wire is delivered to a lesion site first, and then the balloon catheter is delivered to the lesion site along the guide wire under the guidance of the guide wire; when the balloon catheter needs to be withdrawn to the outside of the body, the balloon catheter is withdrawn to the outside of the body first, and then the guide wire is withdrawn to the outside of the body.

The balloon catheter of the embodiment is used for interventional operation, and the guide wire delivery, the balloon catheter withdrawal and the guide wire withdrawal need to be completed sequentially, so that the operation is complex, the operation risk is high, and the operation time is long.

Disclosure of Invention

The embodiment of the application provides a balloon catheter device, which is simple and convenient to operate and low in operation risk.

In one embodiment of the present application, there is provided a balloon catheter device comprising:

a catheter holder;

a guide wire; the proximal end of the guide wire is fixed on the guide tube seat;

a balloon; the balloon is sleeved on the periphery of the guide wire, and the distal end of the balloon is connected to the guide wire in a sealing manner; the distal end of the guidewire is located outside the balloon;

an outer conduit; the outer catheter is sleeved on the periphery of the guide wire; the proximal end of the outer catheter is fixed on the catheter seat, and the distal end of the outer catheter is connected with the proximal end of the balloon; the outer catheter inner wall and the guidewire define a channel for infusing a liquid into the balloon.

In another embodiment of the present application, there is provided another balloon catheter device comprising

A catheter holder;

an inner catheter; the proximal end of the inner catheter is fixed on the catheter seat;

an outer conduit; the outer guide pipe is sleeved on the periphery of the inner guide pipe; the proximal end of the outer catheter is fixed on the catheter seat, and the distal end of the outer catheter is connected with the proximal end of the balloon; the outer catheter inner wall and the inner catheter outer wall define a channel for infusing a liquid into the balloon;

a guide wire; the inner catheter is sleeved on the periphery of the guide wire, and the distal end of the guide wire is positioned outside the inner catheter;

the guide wire is fixedly connected with the inner catheter;

or,

the guide wire is fixedly connected with the catheter seat.

Performing interventional operation by using the balloon catheter device disclosed by the embodiment of the application, wherein the distal end of the guide wire is positioned outside the balloon to play a role in guiding; the guide wire and the saccule are fixed into a whole, so that synchronous delivery and synchronous withdrawal of the guide wire and the saccule are realized, the operation is simple and convenient, and the operation risk is low.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without the need for inventive labour for a person skilled in the art.

FIG. 1 is a schematic structural view of a balloon catheter device according to an embodiment of the present application;

FIG. 2 is a schematic view of a partial structure at a distal balloon of a balloon catheter device according to one embodiment of the present application;

FIG. 3 is a cross-sectional view of a balloon catheter device at a proximal catheter hub according to one embodiment of the present application;

FIG. 4 is a cross-sectional view of an electrode assembly of a balloon catheter device provided in one embodiment of the present application;

FIG. 5 is a cross-sectional view A-A of FIG. 4;

FIG. 6 is a schematic view of wire connection of an electrode assembly of a balloon catheter device according to one embodiment of the present application;

FIG. 7 is a cross-sectional view of an electrode assembly of a balloon catheter device provided in accordance with another embodiment of the present application;

FIG. 8 is a schematic view of a wire connection of an electrode assembly of a balloon catheter device according to another embodiment of the present application;

FIG. 9 is a schematic structural view of a balloon catheter device according to another embodiment of the present disclosure;

FIG. 10 is a schematic structural view of a balloon catheter device according to another embodiment of the present disclosure;

FIG. 11 is a cross-sectional view of a balloon catheter device provided in accordance with another embodiment of the present application at the proximal end of an outer catheter;

fig. 12 is a cross-sectional view of a balloon catheter device provided at a proximal end of a guidewire according to another embodiment of the present application.

Detailed Description

The technical solution of the present utility model will be described in detail below with reference to the accompanying drawings and the specific embodiments, it being understood that these embodiments are for illustrating the utility model only and not for limiting the scope, and that various equivalent modifications of the utility model will fall within the scope defined by the present application by those skilled in the art after reading the present utility model.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The term "proximal" as used herein refers to the side closer to the operator and the term "distal" refers to the side farther from the operator.

The saccule catheter is one kind of medical intervention equipment for use in angioplasty, stent conveying, expanding, shock wave vascular lithotripsy, etc. In one embodiment of the balloon catheter, comprises:

a catheter holder;

an inner catheter; the proximal end of the inner catheter is fixed on the catheter seat; the inner catheter has a guidewire lumen.

To solve the above technical problem, an alternative embodiment of the present application is shown in fig. 1 and 2, and provides a balloon catheter device, including:

a catheter base 101;

a guidewire 102; the proximal end of the guidewire 102 is fixed to the catheter hub 101; optionally, the guide wire 102 may be a loach guide wire 102, so as to improve the trafficability of the balloon catheter device in a blood vessel; optionally, the distal end of the guide wire 102 is curved, which is conducive to the guide wire 102 passing through a curved blood vessel, and enables the head end of the guide wire 102 to rebound in time after touching the inner wall of the blood vessel, so as to avoid damaging the inner wall of the blood vessel;

a balloon 103; the balloon 103 is sleeved on the periphery of the guide wire 102, and the distal end of the balloon 103 is connected to the guide wire 102 in a sealing manner; the distal end of the guidewire 102 is located outside the balloon 103;

an outer conduit 104; the outer catheter 104 is sleeved on the periphery of the guide wire 102; and the proximal end of the outer catheter 104 is fixed on the catheter seat 101, and the distal end of the outer catheter 104 is connected with the proximal end of the balloon 103; the inner wall of the outer catheter 104 and the guide wire 102 define a channel for infusing a liquid into the balloon 103.

Optionally, the proximal end of the outer catheter 104 is adhesively secured to the catheter hub 101; and as shown in fig. 3, the proximal end of the guide wire 102 is exposed outside the outer catheter 104, so that the proximal exposed portion of the guide wire 102 can be fixed to the catheter hub 101 by adhesion.

Alternatively, the outer catheter 104 is fixedly connected to the guide wire 102, and one of the outer catheter 104 and the guide wire 102 is directly fixedly connected to the catheter hub 101, such as by bonding; the other of the outer catheter 104 and the guidewire 102 is indirectly fixedly connected to the catheter hub 101.

Performing interventional operation by using the balloon catheter device disclosed by the embodiment of the application, wherein the distal end of the guide wire is positioned outside the balloon 103 to play a role in guiding; the guide wire 102 and the balloon 103 are fixed into a whole, so that synchronous delivery and synchronous withdrawal of the guide wire 102 and the balloon 103 are realized, the operation is simple and convenient, and the operation risk is low.

In addition, the balloon catheter device disclosed by the embodiment of the application does not need to be provided with an inner catheter, and the trafficability and the compliance of the balloon catheter device can be improved.

Optionally, the balloon catheter device of the above embodiment is used for shock wave vascular lithotripsy, and the balloon catheter device further comprises an electrode assembly 105; the electrode assembly 105 is positioned within the balloon 103, and the electrode assembly 105 is disposed on the guidewire 102; the electrode assembly 105 is configured such that when a voltage is applied between electrodes of the electrode assembly 105, the electrode assembly 105 can generate a discharge shock wave in the liquid within the balloon 103. Accordingly, to avoid the wire 102 from being electrically connected to the electrode assembly 105, the outer surface of the wire 102 is made of an insulating material.

In an alternative embodiment of the electrode assembly 105, as shown in fig. 4, 5 and 6, the electrode assembly 105 includes an inner electrode, an outer electrode sheath 203 and an insulating layer 202;

the inner electrode is paved on the outer wall of the guide wire 102; the insulating layer 202 is located at the periphery of the inner electrode and is used for insulating and separating the inner electrode from the outer electrode sheath 203; the outer electrode sheath 203 surrounds the outer periphery of the insulating layer 202;

the inner electrode includes a discharge portion; the discharge portion is located outside the axial footprint of the outer electrode sheath and is capable of contacting the liquid within balloon 103;

the inner electrodes include first and second inner electrodes 201a and 201b arranged at intervals; when a voltage is applied between the first and second inner electrodes 201a and 201b, a discharge arc may be generated in a liquid between the discharge portion 2011 of the first inner electrode 201a and the outer electrode sheath 203, and a discharge arc may be generated in a liquid between the outer electrode sheath 203 and the discharge portion 2011 of the second inner electrode 201b, so that a current sequentially flows through the first inner electrode 201a, the outer electrode sheath 203, and the second inner electrode 201b.

Specifically, when the first inner electrode 201a or the second inner electrode 201b is in a sleeve shape, the first inner electrode 201a and the second inner electrode 201b may be arranged at intervals along the axial direction, and then one of the discharge portion 2011 of the first inner electrode 201a and the discharge portion 2011 of the second inner electrode 201b is located at the distal end of the outer electrode sheath 203, and the other is located at the proximal end of the outer electrode sheath 203; alternatively, as shown in fig. 4, the cross section of the inner electrode 201 is arc-shaped, and the first inner electrode 201a and the second inner electrode 201b may be arranged at intervals along the circumferential direction.

Optionally, the size of the gap between the first inner electrode 201a and the second inner electrode 201b is configured such that no discharge arc is formed in the liquid between the first inner electrode 201a and the second inner electrode 201b when a voltage is applied between the first inner electrode 201a and the second inner electrode 201b.

Optionally, an insulating shielding medium is arranged between the first inner electrode 201a and the second inner electrode 201b, so that when a voltage is applied between the first inner electrode 201a and the second inner electrode 201b, no discharge arc is formed in the liquid between the first inner electrode 201a and the second inner electrode 201b.

In this embodiment, optionally, the insulating layer includes a first insulating layer and a second insulating layer that are arranged at intervals; the first insulating layer covers the periphery of the first inner electrode, and the second insulating layer covers the periphery of the second inner electrode; alternatively, as shown in fig. 4, the insulating layer 202 is in a sleeve shape and surrounds the outer circumferences of the first inner electrode 201a and the second inner electrode 201b.

The first inner electrode 201a includes a discharge 2011, the discharge 2011 of the first inner electrode 201a is located outside an axial coverage area of the outer electrode sheath 203, and the discharge 2011 is contactable with liquid within the balloon 103.

In an alternative of this embodiment, a portion of the first inner electrode 201a is covered by the insulating layer 202, isolated from the liquid within the balloon 103; the proximal and/or distal ends of the first inner electrode 201a extend beyond the axial footprint of the insulating layer 202. The discharge portion 2011 of the first inner electrode 201a includes a portion of the outer peripheral wall of the first inner electrode 201a; a portion of the outer peripheral wall of the first inner electrode 201a is located outside the axial coverage area of the insulating layer 202. In this alternative, the discharge portion 2011 of the first inner electrode 201a is circular, so that the surface area of the discharge portion 2011 of the first inner electrode 201a is larger, and the position where the discharge arc occurs has a certain randomness, so that electrode damage caused by excessive discharge times of the electrode at the same or similar positions is avoided, and the service lives of the first inner electrode 201a and the outer electrode sheath 203 are prolonged; the cross section of the inner electrode 201 of another part located within the axial coverage area of the insulating layer 202 may be circular or may be circular arc.

In yet another alternative of this embodiment, the outer electrode sheath 203 is located within the axial extent of the insulating layer 202; the insulating layer 202 is provided with a discharge hole; the discharge holes are located outside the axial coverage area of the outer electrode sheath 203; the discharge hole is configured such that a portion of the first internal electrode 201a is exposed; the exposed portion of the first internal electrode 201a constitutes the discharge portion 2011 of the first internal electrode 201 a. The size of the discharge gap between the discharge portion 2011 of the first inner electrode 201a and the outer electrode sheath 203 can be adjusted by the discharge hole provided in the insulating layer 202, and the position where the discharge arc occurs can be arranged as needed.

In this embodiment, optionally, the number of the electrode assemblies 105 is at least two, as shown in fig. 6, including but not limited to a first electrode assembly 105a and a second electrode assembly 105b; the second inner electrode 201b of the first electrode assembly 105a is electrically connected to the first inner electrode 201a of the second electrode assembly 105b by a third wire 206; when a voltage is applied between the first inner electrode 201a of the first electrode assembly 105a and the second inner electrode 201b of the second electrode assembly 105b, a discharge arc is generated between the discharge portion 2011 of the first inner electrode 201a of the first electrode assembly 105a and the outer electrode sheath 203 of the first electrode assembly 105a, a discharge arc is generated between the outer electrode sheath 203 of the first electrode assembly 105a and the discharge portion 2011 of the second inner electrode 201b of the first electrode assembly 105a, a discharge arc is generated between the discharge portion 2011 of the first inner electrode 201a of the second electrode assembly 105b and the outer electrode sheath 203 of the second electrode assembly 105b, and a discharge arc is generated between the outer electrode sheath 203 of the second electrode assembly 105b and the discharge portion 2011 of the second inner electrode 201b of the second electrode assembly 105b; to allow current to pass through the first inner electrode 201a of the first electrode assembly 105a, the outer electrode sheath 203 of the first electrode assembly 105a, the second inner electrode 201b of the first electrode assembly 105a, the first inner electrode 201a of the second electrode assembly 105b, the outer electrode sheath 203 of the second electrode assembly 105b, the second inner electrode 201b of the second electrode assembly 105b in sequence. In fig. 6, the first inner electrode 201a of the first electrode assembly 105a is electrically connected to a first power supply terminal of the pulse generator through a first wire 204, and the second inner electrode 201b of the second electrode assembly 105b is electrically connected to a second power supply terminal of the pulse generator through a second wire 205; the voltage polarity of the first power supply terminal is opposite to that of the second power supply terminal.

In another alternative embodiment of the electrode assembly 105, as shown in fig. 7 and 8, the electrode assembly 105 includes a first electrode 301, a first intermediate electrode unit, and a second electrode 303; the first electrode 301, the first intermediate electrode unit and the second electrode 303 are sequentially arranged at intervals along the circumferential direction of the guide wire 102; the first electrode 301 and the first intermediate electrode unit have a gap therebetween and constitute an electrode pair; a gap is provided between the first intermediate electrode unit and the second electrode 303, and an electrode pair is formed; when a voltage is applied between the first electrode 301 and the second electrode 303, each of the electrode pairs is configured to form a discharge arc in the liquid, respectively, to allow a current to pass through the first electrode 301, the first intermediate electrode unit, the second electrode 303 in sequence.

Wherein applying a voltage between the first electrode 301 and the second electrode 303 means that a potential difference exists between the first electrode 301 and the second electrode 303; specifically, one of the first electrode 301 and the second electrode 303 may be directly connected to a positive electrode of a power supply through a wire, and the other one may be directly connected to a negative electrode of the power supply through a wire; or the first electrode 301 and/or the second electrode 303 are/is provided with a conductive device such as a resistor, an electrode pair, a capacitor, etc. on a conductive path connected to a power supply.

Specifically, the first intermediate electrode unit comprises a first intermediate electrode, a second intermediate electrode, a … and an Nth intermediate electrode, wherein N is more than or equal to 1; the first electrode, the first intermediate electrode, the second intermediate electrode, …, the nth intermediate electrode and the second electrode are sequentially arranged at intervals along the circumferential direction of the guide wire 102; wherein the first electrode and the first intermediate electrode have a gap and constitute an electrode pair; the ith intermediate electrode and the (i+1) th intermediate electrode have a gap and form an electrode pair, and i is more than or equal to 1 and less than or equal to N-1; the Nth intermediate electrode and the second electrode have a gap and form an electrode pair; when a voltage is applied between the first electrode and the second electrode, each of the electrode pairs is configured to form a discharge arc in the liquid, respectively, to allow a current to pass through the first electrode, the first intermediate electrode, the second intermediate electrode, …, the nth intermediate electrode, the second electrode in that order. In this embodiment, the definition of the first, second … and nth intermediate electrodes means that a continuous natural number sequence is defined, and the definition is used to express the naming manner of a plurality of intermediate electrodes when the plurality of intermediate electrodes are provided; embodiments in which the first intermediate electrode unit has only one first intermediate electrode are therefore not excluded.

In this embodiment, the first intermediate electrode, the second intermediate electrode, …, and the nth intermediate electrode are all connected to a power source neither through a wire or a ground.

In the embodiment shown in fig. 7, the first intermediate electrode unit includes a first intermediate electrode; each of the electrode assemblies 105 includes a first electrode 301, a first intermediate electrode 302, and a second electrode 303, the first electrode 301, the first intermediate electrode 302, and the second electrode 303 being circumferentially spaced along the guidewire 102. Optionally, the cross-sectional shapes of the first electrode 301, the first intermediate electrode 302, and the second electrode 303 are all arc-shaped, so that the inner wall of the first electrode 301 and the inner wall of the first intermediate electrode 302 are respectively attached to the outer wall of the guide wire 102, the connection is more stable, and the cross-sectional size is reduced. The first electrode 301, the first intermediate electrode 302 and the second electrode 303 are sequentially arranged at intervals along the circumferential direction of the guide wire 102; the first electrode 301 and the first intermediate electrode 302 form an electrode pair; the first intermediate electrode 302 and the second electrode 303 form an electrode pair; when a voltage is applied between the first electrode 301 and the second electrode 303, the electrode pairs are configured to form discharge arcs in the liquid, respectively, to allow a current to pass through the first electrode 301, the first intermediate electrode 302 and the second electrode 303 in sequence.

It is understood that the number of intermediate electrodes in the first intermediate electrode unit is not limited to the present embodiment; for example, n=2, each of the electrode assemblies 105 includes a first electrode 301, a first intermediate electrode 302, a second intermediate electrode, and a second electrode 303, the first electrode 301, the first intermediate electrode 302, the second intermediate electrode, and the second electrode 303 being circumferentially spaced along the guidewire 102. The first electrode 301 and the first intermediate electrode 302 form an electrode pair; the first intermediate electrode 302 and the second intermediate electrode form an electrode pair; the second intermediate electrode and the second electrode 303 form an electrode pair; when a voltage is applied between the first electrode 301 and the second electrode 303, the electrode pairs are configured to form discharge arcs in the liquid, respectively, to allow a current to pass through the first electrode 301, the first intermediate electrode 302, the second intermediate electrode, and the second electrode 303 in that order.

In this embodiment, the device further includes a positioning sheath 304 made of an insulating material disposed on the outer periphery of the electrode assembly 105. The positioning sheath 304 is used to maintain the relative position between the electrode assembly 105 and the guidewire 102, as shown in fig. 7. Optionally, the positioning sheath 304 is formed by thermoforming.

The positioning sheath 304 formed by thermal plastic wraps and fixes the electrode assembly 105 on the guide wire 102, so that the electrode assembly 105 can be effectively prevented from falling off from the guide wire 102 due to various factors in operation, and the electrode assembly 105 is displaced relative to the guide wire 102, thereby improving the safety and reliability of the device.

The positioning sheath 304 is provided with a first discharge opening, a second discharge opening, a third discharge opening and a fourth discharge opening; the first discharge opening is located outside the outer wall of the first electrode 301, so that part of the outer wall of the first electrode 301 leaks out to form a first discharge area 305; the second discharge openings and the third discharge openings are discretely distributed on the outer side of the outer wall of the first intermediate electrode 302, the second discharge openings enable the first part of the outer wall of the first intermediate electrode 302 to leak out to form a second discharge area 306, and the third discharge openings enable the second part of the outer wall of the first intermediate electrode 302 to leak out to form a third discharge area 307; the fourth discharge opening is located outside the outer wall of the second electrode 303, so that part of the outer wall of the second electrode 303 leaks out to form a fourth discharge area 308; the first discharge region 305 of the first electrode 301 and the second discharge region 306 of the first intermediate electrode 302 constitute the electrode pair; the third discharge region 307 of the first intermediate electrode 302 and the fourth discharge region 308 of the second electrode 303 constitute the electrode pair. In this embodiment, the positioning sheath 304 isolates the gap between the electrodes in the electrode assembly 105 from the liquid, leaving only the first discharge region 305, the second discharge region 306, the third discharge region 307, and the fourth discharge region 308; the distance of the first discharge region 305 from the second discharge region 306, the distance of the third discharge region 307 from the fourth discharge region 308 are respectively configured such that when a voltage is applied between the first electrode 301 and the second electrode 303, the electrode pairs can respectively form a discharge arc in a liquid; the distance between the first discharge region 305 and the second discharge region 306, and the distance between the third discharge region 307 and the fourth discharge region 308 can be adaptively adjusted according to the situation; and the shapes of the first discharge opening, the second discharge opening, the third discharge opening, and the fourth discharge opening are not limited in this application, and may be circular, rectangular, trapezoidal, etc.; the first discharge opening and the second discharge opening may also be arranged in a staggered manner in the axial direction.

In an alternative embodiment, as shown in fig. 8, the number of the electrode assemblies 105 is at least two, and at least two of the electrode assemblies 105 include a distal electrode assembly 105c and a proximal electrode assembly 105d; the proximal electrode assembly 105d is located between the pulse voltage generator and the distal electrode assembly 105 c; the pulse voltage generator is used for providing pulse voltage for the electrode assembly. Wherein the distal electrode assembly 105c and the proximal electrode assembly 105d are used to distinguish between the two electrode assemblies 105 by the relative positional relationship between the two electrode assemblies 105. When the number of the electrode assemblies 105 is greater than two, neither the distal electrode assembly 105c nor the proximal electrode assembly 105d is specific to one electrode assembly 105, and optionally two of the electrode assemblies 105 may be referred to as a distal electrode assembly 105c and a proximal electrode assembly 105d.

The device further comprises a fourth wire 309; the fourth wire 309 is electrically connected between the pulse voltage generator and the distal electrode assembly 105 c.

The fourth wire 309 is laid along the extending direction of the guide wire 102, and then a portion of the fourth wire 309 located in the section of the proximal electrode along the axial direction of the guide wire 102 must be defined as a first proximal overlap section 309a through the section of the proximal electrode along the axial direction of the guide wire 102.

Optionally, the first proximal overlap 309a is superimposed on the outer wall of the proximal electrode assembly 105d. In this embodiment, the fourth wire 309 may cause an increase in the outer cross-sectional area of the profile at the proximal electrode assembly 105d, reducing the passability and compliance of the guidewire 102.

In another alternative embodiment, the first proximal overlap segment 309a is disposed in the gap between any two adjacent electrodes of the proximal electrode assembly 105d as shown in FIG. 8. In this embodiment, the fourth wire 309 is prevented from occupying space at the proximal electrode assembly 105d resulting in an increased outer profile cross-sectional area at the proximal electrode assembly 105d, and the guidewire 102 has better passability in the vessel than in the previous embodiment.

In one aspect, when the first proximal overlap segment 309a is disposed in the gap between any two adjacent electrodes of the proximal electrode assembly 105d, it may be useful to maintain insulating isolation between the electrodes of the proximal electrode assembly 105d. Optionally, the first proximal overlapping section 309a is fixedly connected to the electrode of the proximal electrode assembly, and the fixing manner between the two is not limited in this application, and a fixing structure such as an adhesive, a buckle, or the like may be used. In an alternative embodiment, the first electrode 301 and the first intermediate electrode 302 of the proximal electrode assembly 105d are fixedly connected to a first proximal overlap segment 309a, respectively, so that the positions of the first electrode 301 and the first intermediate electrode 302 on the guide wire 102 are more stable.

In another alternative embodiment of the present application, there is also provided another balloon catheter device, as shown in fig. 9 and 10, comprising:

a catheter holder 401;

an inner catheter 405; the proximal end of the inner catheter 405 is fixed to the catheter hub 401; the inner catheter 405 has a guidewire lumen;

a balloon 403; the balloon 403 is sleeved on the periphery of the inner catheter 405, and the distal end of the balloon 403 is connected to the inner catheter 405 in a sealing manner; the distal end of the inner catheter 405 is located outside the balloon 403;

an outer conduit 404; the outer conduit 404 is sleeved on the periphery of the inner conduit 405; and the proximal end of the outer catheter 404 is fixed on the catheter holder 401, and the distal end of the outer catheter 404 is connected to the proximal end of the balloon 403; the inner wall of the outer catheter 404 and the outer wall of the inner catheter 405 define a channel for infusing a liquid into the balloon 403;

a guidewire 402; the inner catheter 405 is sleeved around the guidewire 402, and the distal end of the guidewire 402 is located outside the inner catheter 405.

Optionally, as shown in fig. 9, the proximal end of the guide wire 402 is inserted into the lumen of the guide wire 402 from the distal end of the inner catheter 405, and the length of the portion of the guide wire 402 inserted into the lumen of the guide wire 402 is convenient for the fixed connection between the guide wire 402 and the inner catheter 405, for example, may be 0.2cm-1cm; optionally, the proximal end of the guide wire 402 is inserted into the lumen of the guide wire 402 of the inner catheter 405 and is adhesively secured. In this embodiment, the guide wire 402 is not present in most of the tube sections of the inner catheter 405, so that the balloon 403 has better passage of the catheter device.

Alternatively, as shown in fig. 10, the proximal end of the guidewire 402 extends outside the patient's body; the guide wire 402 is fixedly connected with the inner catheter 405; alternatively, the guide wire 402 is fixedly connected to the catheter hub 401. In this embodiment, the guide wire 402 is provided in the lumen of the guide wire 402 of the inner catheter 405, so that the balloon 403 catheter device has better pushability.

Alternatively, as shown in FIG. 11, the proximal end of the outer catheter 404 is adhesively secured to the catheter hub 401; and the proximal end of the inner catheter 405 is exposed outside the outer catheter 404, so that the proximal exposed portion of the inner catheter 405 can be fixed to the catheter hub 401 by adhesion; as shown in fig. 12, the proximal end of the guide wire 402 is exposed outside the inner catheter 405, and the proximal exposed portion of the guide wire 402 is fixed to the catheter hub 401.

Alternatively, the outer catheter is fixedly connected to the inner catheter 405, and one of the outer catheter and the inner catheter 405 is directly fixedly connected to the catheter hub 401, such as by bonding; the other of the outer and inner conduits 405 is indirectly fixedly connected to the conduit block 401.

Using the balloon 403 catheter device of the present embodiment to perform an interventional operation, the distal end of the guide wire 402 is located outside the balloon 403, so as to perform a guiding function; the guide wire 402 and the balloon 403 are fixed into a whole, so that synchronous delivery and synchronous withdrawal of the guide wire 402 and the balloon 403 are realized, the operation is simple and convenient, and the operation risk is low.

The balloon catheter device of the embodiment can also be used for shock wave vascular lithotripsy, and the corresponding technical scheme refers to the foregoing embodiment and is not described herein.

The specific embodiments of the electrode assembly provided herein are for purposes of understanding only the contents of the present application and should not be construed as limiting the scope of the present application. Other forms of electrode assemblies, which are connected to the lead in the same or equivalent manner as the present application, should fall within the scope of the present application.

It should be noted that, in the description of the present specification, the terms "first," "second," and the like are used for descriptive purposes only and to distinguish between similar objects, and there is no order of preference therebetween, nor should it be construed as indicating or implying relative importance. In addition, in the description of the present specification, unless otherwise indicated, the meaning of "a plurality" is two or more.

The foregoing embodiments are merely illustrative of the technical concept and features of the present application, and are intended to enable those skilled in the art to understand the content of the present application and implement the same according to the content of the present application, not to limit the protection scope of the present application. All equivalent changes or modifications made in accordance with the spirit of the present application are intended to be included within the scope of the present application.

It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided will be apparent to those of skill in the art upon reading the above description. The disclosures of all articles and references, including patent applications and publications, are incorporated herein by reference for the purpose of completeness.

Claims

1. A balloon catheter device, comprising:

a catheter holder;

2. The apparatus of claim 1, wherein: the distal end of the guide wire is arc-shaped and curved.

3. The apparatus of claim 1, wherein: the proximal end of the guide wire is exposed out of the outer catheter, and the proximal exposed portion of the guide wire is fixed to the catheter hub.

4. The apparatus of claim 1, wherein: the outer surface of the guide wire is made of an insulating material; the device further comprises an electrode assembly; the electrode assembly is positioned in the balloon and is arranged on the guide wire;

the electrode assembly is configured to generate a discharge shock wave in a liquid within the balloon when a voltage is applied between electrodes of the electrode assembly.

5. The apparatus as claimed in claim 4, wherein: the electrode assembly comprises an inner electrode, an outer electrode sheath and an insulating layer;

the inner electrode is paved on the outer wall of the catheter; the insulating layer is positioned at the periphery of the inner electrode and used for insulating and separating the inner electrode from the outer electrode sheath; the outer electrode sheath surrounds the periphery of the insulating layer;

the inner electrode includes a discharge portion; the discharge part is positioned outside the axial coverage area of the outer electrode sheath and can be in contact with liquid in the balloon;

the inner electrode comprises a first inner electrode and a second inner electrode which are arranged at intervals; when a voltage is applied between the first and second inner electrodes, a discharge arc may be generated in the liquid between the discharge portion of the first inner electrode and the outer electrode sheath, and a discharge arc may be generated in the liquid between the outer electrode sheath and the discharge portion of the second inner electrode, so that a current flows through the first inner electrode, the outer electrode sheath, and the second inner electrode in this order.

6. The apparatus as claimed in claim 5, wherein: the number of the electrode assemblies is at least two, and the electrode assemblies comprise a first electrode assembly and a second electrode assembly; the second inner electrode of the first electrode assembly is electrically connected to the first inner electrode of the second electrode assembly; when a voltage is applied between the first inner electrode of the first electrode assembly and the second inner electrode of the second electrode assembly, a discharge arc may be generated in a liquid between the discharge portion of the first inner electrode of the first electrode assembly and the outer electrode sheath of the first electrode assembly, a discharge arc may be generated in a liquid between the outer electrode sheath of the first electrode assembly and the discharge portion of the second inner electrode of the first electrode assembly, a discharge arc may be generated in a liquid between the discharge portion of the first inner electrode of the second electrode assembly and the outer electrode sheath of the second electrode assembly, a discharge arc may be generated in a liquid between the outer electrode sheath of the second electrode assembly and the discharge portion of the second inner electrode of the second electrode assembly; to allow current to pass through the first inner electrode of the first electrode assembly, the outer electrode sheath of the first electrode assembly, the second inner electrode of the first electrode assembly, the first inner electrode of the second electrode assembly, the outer electrode sheath of the second electrode assembly, the second inner electrode of the second electrode assembly in sequence.

7. The apparatus as claimed in claim 4, wherein: the electrode assembly includes a first electrode, a first intermediate electrode unit, and a second electrode; the first electrode, the first intermediate electrode unit and the second electrode are sequentially arranged at intervals along the circumferential direction of the catheter; a gap is formed between the first electrode and the first intermediate electrode unit, and an electrode pair is formed; a gap is formed between the first intermediate electrode unit and the second electrode unit, and an electrode pair is formed; when a voltage is applied between the first electrode and the second electrode, each of the electrode pairs is configured to form a discharge arc in the liquid, respectively, to allow a current to pass through the first electrode, the first intermediate electrode unit, and the second electrode in sequence.

8. The apparatus of claim 7, wherein: the number of the electrode assemblies is at least two, and the electrode assemblies comprise a distal electrode assembly and a proximal electrode assembly; the proximal electrode assembly is located between the pulse voltage generator and the distal electrode assembly; the pulse voltage generator is used for providing pulse voltage for the electrode assembly;

the device further comprises a first wire; the first lead is electrically connected between the pulse voltage generator and the distal electrode assembly;

the first lead includes a first proximal overlapping section; the first proximal overlapping section is located in a region where the proximal electrode assembly is located along the axial direction of the catheter; the first proximal overlap section is disposed in a region between any two adjacent electrodes in the proximal electrode assembly.

9. A balloon catheter device, comprising

A catheter holder;

characterized in that the device further comprises:

the guide wire is fixedly connected with the inner catheter;

or,

the guide wire is fixedly connected with the catheter seat.

10. The apparatus as claimed in claim 9, wherein: the proximal end of the inner catheter is exposed out of the outer catheter, and the proximal exposed part of the inner catheter is fixed on the catheter seat;

the proximal end of the guide wire is exposed out of the inner catheter, and the proximal exposed portion of the guide wire is fixed on the catheter seat.