CN114831697B - Shock wave generating device for molding body cavity channel - Google Patents
Shock wave generating device for molding body cavity channel Download PDFInfo
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- CN114831697B CN114831697B CN202210554513.1A CN202210554513A CN114831697B CN 114831697 B CN114831697 B CN 114831697B CN 202210554513 A CN202210554513 A CN 202210554513A CN 114831697 B CN114831697 B CN 114831697B
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- 230000035939 shock Effects 0.000 title claims abstract description 51
- 238000000465 moulding Methods 0.000 title abstract description 5
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- 230000001681 protective effect Effects 0.000 claims abstract description 23
- 238000007493 shaping process Methods 0.000 claims description 11
- 238000001727 in vivo Methods 0.000 claims description 6
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- 239000002504 physiological saline solution Substances 0.000 claims description 4
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
- A61B17/22004—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves
- A61B17/22012—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves in direct contact with, or very close to, the obstruction or concrement
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
- A61B2017/22001—Angioplasty, e.g. PCTA
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
- A61B17/22004—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves
- A61B2017/22005—Effects, e.g. on tissue
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- A—HUMAN NECESSITIES
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- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
- A61B17/22004—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves
- A61B17/22012—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves in direct contact with, or very close to, the obstruction or concrement
- A61B2017/22025—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves in direct contact with, or very close to, the obstruction or concrement applying a shock wave
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- A—HUMAN NECESSITIES
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- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
- A61B2017/22051—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for with an inflatable part, e.g. balloon, for positioning, blocking, or immobilisation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
- A61B2017/22051—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for with an inflatable part, e.g. balloon, for positioning, blocking, or immobilisation
- A61B2017/22065—Functions of balloons
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
- A61B2017/22082—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for after introduction of a substance
Abstract
The invention provides a shock wave generating device for molding an internal cavity channel, which belongs to the field of medical appliances and comprises: the device comprises a carrier, a first inner electrode, a second inner electrode, an insulating protective sleeve and a balloon; the first inner electrode and the second inner electrode are respectively arranged on two opposite sides of the outer surface of the carrier; the first inner electrode and the second inner electrode are connected with an external power supply through wires; the saccule is wrapped on the carrier, a closed space is formed between the saccule and the carrier, liquid is filled in the closed space, and the two inner electrodes are positioned in the closed space; the insulating protective sleeve is sleeved on the carrier and covers the two inner electrodes; the insulating protective sleeve is provided with an opening or a slit so as to expose part of the two inner electrodes, when the shock wave generating device acts on the blood vessel of a human body, the first inner electrode is communicated with the second inner electrode through liquid under the action of an external power supply, so that shock wave energy is generated in the balloon, calcified tissues at corresponding positions in the blood vessel are crushed, and the crushing efficiency of the calcified tissues is improved.
Description
Technical Field
The invention relates to the field of medical equipment, in particular to a shock wave generating device for molding an internal cavity channel.
Background
Coronary atherosclerotic heart disease is a coronary angiogenic atherosclerotic lesion that causes stenosis or blockage of a lumen of a blood vessel, resulting in ischemia, hypoxia or necrosis of the heart muscle, also known as coronary heart disease. Pharmaceutical, interventional and surgical treatments are commonly employed. The interventional therapy has the advantages of obvious curative effect, small wound, less pain of patients, same overall curative effect as the coronary artery bypass grafting, and obviously better than the pure drug therapy, and the technique is favored by clinicians and patients.
In 1977, gruentzig successfully performed the first balloon angioplasty (PTCA procedure) in the world for a patient with proximal stenosis of the anterior descending coronary artery using a balloon catheter, and opened a new era of interventional treatment of coronary heart disease. In ten years, the balloon stent technology rapidly develops, becomes smaller in volume and stronger in expansion force, and meanwhile, a certain clinical experience is accumulated.
The majority of balloon catheters currently developed devices for achieving vasodilation by shock wave companies, the patent application number 201380041656.1 of which provides a low profile electrode for an angioplasty shock wave catheter wherein a first inner electrode is located at a first lateral position of an elongate member within the balloon and a second inner electrode is located at a second lateral position circumferentially offset from the first inner electrode, an insulating protective sheath is disposed around the first inner electrode and the second inner electrode, an outer electrode protective sheath is disposed around the insulating protective sheath, and upon application of a voltage between the first inner electrode and the second inner electrode, current flows sequentially from the first inner electrode to the outer electrode protective sheath and then to the second inner electrode such that the first shock wave is initiated from the first lateral position and the second shock wave is initiated from the second lateral position. According to the scheme, the external electrode protective sleeve is required to be arranged, and the current can only flow from the first internal electrode to the external electrode protective sleeve and then flow to the second internal electrode, so that the shock wave generation process is complex, and the breaking efficiency of calcified tissues is affected.
Based on the above, there is a need for a new device for body lumen tract shaping to remove calcified tissue at the intima of the blood vessel and to increase the efficiency of disruption of the calcified tissue.
Disclosure of Invention
The invention aims to provide a shock wave generating device for shaping an internal cavity channel, which can effectively crush calcified tissues in blood vessels and improve the crushing efficiency of the calcified tissues.
In order to achieve the above object, the present invention provides the following solutions:
a shock wave generating device for in-vivo tract shaping, the shock wave generating device for in-vivo tract shaping comprising: the device comprises a carrier, a first inner electrode, a second inner electrode, an insulating protective sleeve and a balloon;
the first inner electrode and the second inner electrode are respectively arranged on two opposite sides of the outer surface of the carrier; the first inner electrode is connected with an external power supply through a first wire, and the second inner electrode is connected with the external power supply through a second wire;
the balloon is wrapped on the carrier, a closed space is formed between the balloon and the carrier, the first inner electrode and the second inner electrode are positioned in the closed space, and liquid is filled in the closed space;
the insulating protective sleeve is sleeved on the carrier and covers the first inner electrode and the second inner electrode; an opening or a slit is formed in the insulating protective sleeve so as to expose part of the first inner electrode and part of the second inner electrode.
Optionally, the carrier is a catheter.
Optionally, the first internal electrode is a positive electrode, and the second internal electrode is a negative electrode; when the shock wave generating device acts on the blood vessel of a human body, the first inner electrode is communicated with the second inner electrode through liquid under the action of an external power supply, and the liquid generates bubbles, so that shock wave energy is generated in the balloon.
Optionally, the number of the first internal electrodes is multiple, each first internal electrode is a positive electrode, and the second internal electrode is a negative electrode; when the shock wave generating device acts on the blood vessel of a human body, under the action of an external power supply, each first inner electrode is communicated with the second inner electrode through liquid, and the liquid generates bubbles, so that shock wave energy is generated in the saccule.
Optionally, the first internal electrodes are positive electrodes, the number of the second internal electrodes is a plurality, and each second internal electrode is a negative electrode; when the shock wave generating device acts on the blood vessel of a human body, the first inner electrodes are communicated with the second inner electrodes through liquid under the action of an external power supply, and the liquid generates bubbles, so that shock wave energy is generated in the saccule.
Optionally, the number of the first internal electrodes is a plurality, and the number of the second internal electrodes is a plurality; each first internal electrode is a positive electrode, and each second internal electrode is a negative electrode; a first internal electrode and a second internal electrode are correspondingly arranged; the opposing first and second inner electrodes are a set of electrodes.
Optionally, each set of electrodes has an angular difference from an adjacent set of electrodes in the direction of the central axis of the carrier to achieve a spiral discharge.
Optionally, the liquid in the closed space is a mixed liquid of a developing solution and physiological saline.
Optionally, a plurality of micropores are formed on the balloon.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the first inner electrode and the second inner electrode are respectively arranged on two opposite sides of the outer surface of the carrier; the first inner electrode and the second inner electrode are connected with an external power supply through wires; the balloon is wrapped on the carrier, a closed space is formed between the balloon and the carrier, the first inner electrode and the second inner electrode are positioned in the closed space, and the closed space is filled with liquid; when the shock wave generating device acts on the blood vessel of the human body, the first inner electrode is communicated with the second inner electrode through the liquid under the action of an external power supply, and bubbles are generated by the liquid, so that shock wave energy is generated in the saccule, and calcified tissues at corresponding positions in the blood vessel are crushed. The first inner electrode and the second inner electrode are arranged on two opposite sides of the outer surface of the carrier, so that the balloon expanding efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural diagram of embodiment 1 of the present invention;
FIG. 2 is another schematic structure of embodiment 1 of the present invention;
FIG. 3 is a schematic structural diagram of embodiment 2 of the present invention;
FIG. 4 is a schematic structural diagram of embodiment 3 of the present invention;
FIG. 5 is a schematic structural diagram of embodiment 4 of the present invention;
fig. 6 is a schematic structural diagram of embodiment 5 of the present invention.
Symbol description:
carrier-1, first inner electrode-2, second inner electrode-3, saccule-4, first wire-5, second wire-6, insulating protective sleeve-7 and opening-8.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a shock wave generating device for shaping an internal cavity channel, when the shock wave generating device acts in a human body blood vessel, a first internal electrode is conducted with a second internal electrode through liquid under the action of an external power supply, and the liquid generates bubbles, so that shock wave energy is generated in a balloon to crush calcified tissues at corresponding positions in the blood vessel, and the first internal electrode and the second internal electrode are arranged on two opposite sides of the outer surface of a carrier, so that the crushing efficiency of the calcified tissues is improved.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Example 1
As shown in fig. 1, the shock wave generating device for in-vivo channel shaping of the present invention comprises: a carrier 1, a first inner electrode 2, a second inner electrode 3 and a balloon 4.
Wherein the first internal electrode 2 and the second internal electrode 3 are respectively arranged on two opposite sides of the outer surface of the carrier 1. The first inner electrode 2 is connected to an external power supply through a first wire 5, and the second inner electrode 3 is connected to the external power supply through a second wire 6. The first wire 5 and the second wire 6 each extend outwards along the carrier 1.
Specifically, the carrier 1 is a catheter. The material of the carrier 1 is an insulating material.
The balloon 4 is wrapped on the carrier 1, a closed space is formed between the balloon 4 and the carrier 1, the first inner electrode 2 and the second inner electrode 3 are positioned in the closed space, and liquid is filled in the closed space. Specifically, the liquid in the closed space is a mixed liquid of the developing solution and the physiological saline.
When the shock wave generating device acts in a human blood vessel, the first inner electrode 2 is communicated with the second inner electrode 3 through liquid under the action of an external power supply, and bubbles are generated by the liquid, so that shock wave energy is generated in the balloon 4. Realizing rapid breaking of calcified tissues at corresponding positions in blood vessels.
In order to further increase the intensity of the shock wave energy, the shock wave generating device for molding the internal cavity channel of the invention further comprises an insulating protective sleeve 7.
The insulating protective sleeve 7 is sleeved on the carrier 1 and covers the first inner electrode 2 and the second inner electrode 3. An opening 8 is formed in the insulating protective sleeve 7 to expose a part of the first internal electrode 2 and a part of the second internal electrode 3. In this embodiment, the opening 8 is an elongated slit. The insulating protective sleeve 7 is in the shape of a hexagon, an octagon and other pipes.
By providing an insulating protective sleeve between the balloon and the carrier, a portion of the first inner electrode and a portion of the second inner electrode are covered such that the current is only in communication with the fluid through the opening, the intensity of the shock wave may be increased. The invention has the advantages that the whole volume is very small, the area of the first electrode and the area of the second electrode are required to be controlled to ensure the intensity of the shock wave, the preparation difficulty of the electrodes are further increased, part of the first inner electrode and part of the second inner electrode are covered by the insulating protective sleeve, the current only flows out through the slit, the volume of the inner electrode is not required to be strictly limited, the area of the opening of the insulating protective sleeve is required to be changed, and the preparation difficulty of the whole shock wave generating device is reduced.
In this embodiment, the first internal electrode 2 is a positive electrode, and the second internal electrode 3 is a negative electrode. The current flows from the first inner electrode 2 to the second inner electrode 3. Since the first inner electrode 2 and the second inner electrode 3 are positioned at opposite sides of the carrier 1, shock waves generated at both ends of the first inner electrode 2 and the second inner electrode 3 are emitted in different directions, and the method can be applied to the case that calcified tissues in blood vessels are in an asymmetric structure.
Further, as shown in fig. 2, the first internal electrode 2 and the second internal electrode 3 are electrode plates.
In order to better inhibit the generation of calcified tissue in the blood vessel, the surface of the balloon 4 may be coated with a liquid medicine for treating restenosis in the blood vessel. In addition, the surface of the saccule 4 can be coated with taxol, rapamycin or other medicines capable of inhibiting endothelialization proliferation.
Preferably, the balloon 4 is an open balloon, i.e. a plurality of micropores are formed on the balloon 4. Because of the small size of the micro-holes, the surface tension generated by the micro-holes can keep the high pressure generated in the balloon 4 instantaneously, so that the balloon 4 is rapidly inflated. The open balloon is used for conveying the medicine for the blood vessel, so that the waste of the medicine can be avoided, and the cost is reduced.
In this embodiment, the balloon 4 includes an inner balloon and an outer balloon, and a plurality of micropores are formed on both the inner balloon 4 and the outer balloon 4. Furthermore, the balloon 4 may be in the form of a single or double leak. The number of the balloon 4 may be two or more. When two balloons 4 are used, one balloon 4 may contain a developing solution and physiological saline, and the other balloon 4 may be filled with a drug for treating restenosis in the blood vessel.
Example 2
As shown in fig. 3, this embodiment is different from embodiment 1 in that the number of the first internal electrodes 2 is plural. The plurality of first inner electrodes 2 are arranged side by side in the axial direction of the catheter. Each of the first internal electrodes 2 is a positive electrode. The second internal electrode 3 is a negative electrode. The second inner electrodes 3 are provided on the outer surface of the carrier opposite to the respective first inner electrodes 2. And the second internal electrodes 3 are disposed at intermediate positions corresponding to the plurality of first internal electrodes 2. When the shock wave generating device acts on the blood vessel of a human body, under the action of an external power supply, each first inner electrode 2 is communicated with the second inner electrode 3 through liquid, and bubbles are generated by the liquid, so that shock wave energy is generated in the balloon 4.
Further, a plurality of first internal electrodes 2 are connected in series.
As another embodiment, the first internal electrode 2 includes a plurality of first positive internal electrodes and a plurality of first negative internal electrodes. The first positive internal electrodes and the first negative internal electrodes are arranged at intervals along the axial direction of the catheter. Two adjacent first positive internal electrodes and two adjacent first negative internal electrodes are a group of electrodes. The second internal electrode is not energized at this time. Each group of electrodes is connected in parallel. The first inner electrode 2 arranged along the axial direction of the carrier enables the shock wave generating device to generate shock waves on one side in the blood vessel, so that the device is applicable to the situation that calcified tissues in the blood vessel are of asymmetric structures.
Example 3
As shown in fig. 4, the present embodiment is different from embodiment 1 in that the first internal electrode 2 is a positive electrode; the number of the second internal electrodes 3 is plural. The plurality of second inner electrodes 3 are arranged side by side in the axial direction of the catheter. Each of the second internal electrodes 3 is a negative electrode. The first inner electrodes 2 are arranged on the outer surface of the carrier opposite to the respective second inner electrodes 3. And the first internal electrodes 2 are disposed at intermediate positions corresponding to the plurality of second internal electrodes 3. When the shock wave generating device acts on the blood vessel of a human body, the first inner electrodes 2 are communicated with the second inner electrodes 3 through liquid under the action of an external power supply, and bubbles are generated by the liquid, so that shock wave energy is generated in the balloon 4.
Further, a plurality of second internal electrodes 3 are connected in series.
As another embodiment, the second internal electrode 3 includes a plurality of second positive internal electrodes and a plurality of second negative internal electrodes. The second positive internal electrodes and the second negative internal electrodes are arranged at intervals along the axial direction of the catheter. Two adjacent second positive internal electrodes and two adjacent second negative internal electrodes are a group of electrodes. The first internal electrode is not energized at this time. Each group of electrodes is connected in parallel. The second inner electrode 3 arranged along the axial direction of the carrier enables the shock wave generating device to generate shock waves on one side in the blood vessel, so that the device is applicable to the situation that calcified tissues in the blood vessel are of asymmetric structures.
Example 4
As shown in fig. 5, this embodiment combines embodiment 2 and embodiment 3, and is different from embodiment 1 in that the number of the first internal electrodes 2 is plural and the number of the second internal electrodes 3 is plural. Each of the first internal electrodes 2 is a positive electrode, and each of the second internal electrodes 3 is a negative electrode. A first internal electrode 2 is arranged in correspondence with a second internal electrode 3. The opposing first 2 and second 3 inner electrodes are a set of electrodes.
Specifically, a plurality of first internal electrodes 2 are connected in series, and a plurality of second internal electrodes 3 are connected in series. As another embodiment, each set of electrodes is connected in parallel.
When the shock wave generating device acts on the blood vessel of a human body, under the action of an external power supply, each first inner electrode 2 is communicated with the corresponding second inner electrode 3 through liquid, and the liquid generates bubbles so as to generate shock wave energy in the balloon.
Example 5
As shown in fig. 6, this embodiment is different from embodiment 5 in that each set of electrodes has an angle difference from the adjacent set of electrodes in the direction of the central axis of the carrier to achieve spiral discharge. That is, in this embodiment, each set of electrodes is spirally arranged on the carrier such that the shock wave generated by the shock wave generating means is in the form of a spiral.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to assist in understanding the methods of the present invention and the core ideas thereof; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (4)
1. A shock wave generating device for shaping an internal body cavity tract, the shock wave generating device for shaping an internal body cavity tract comprising: the device comprises a carrier, a first inner electrode, a second inner electrode, an insulating protective sleeve and a balloon;
the first inner electrode and the second inner electrode are respectively arranged on two opposite sides of the outer surface of the carrier; the first inner electrode is connected with an external power supply through a first wire, and the second inner electrode is connected with the external power supply through a second wire;
the number of the first internal electrodes and the number of the second internal electrodes are all multiple; each first internal electrode is a positive electrode, and each second internal electrode is a negative electrode; a first internal electrode and a second internal electrode are correspondingly arranged; the first inner electrode and the second inner electrode which are opposite are a group of electrodes; each group of electrodes and the adjacent group of electrodes have an angle difference in the central axis direction of the carrier so as to realize spiral discharge;
the balloon is wrapped on the carrier, a closed space is formed between the balloon and the carrier, the first inner electrode and the second inner electrode are positioned in the closed space, and liquid is filled in the closed space;
the insulating protective sleeve is sleeved on the carrier and covers the first inner electrode and the second inner electrode; an opening or a slit is formed in the insulating protective sleeve so as to expose part of the first inner electrode and part of the second inner electrode.
2. The shock wave generating device for in-vivo channel shaping as defined in claim 1, wherein said carrier is a catheter.
3. The shock wave generating device for in-vivo channel shaping as defined in claim 1, wherein the liquid in said closed space is a mixture of a developing solution and a physiological saline solution.
4. The shock wave generating device for in-vivo channel shaping as defined in claim 1, wherein said balloon is provided with a plurality of micro-holes.
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| CN117481743A (en) * | 2022-07-26 | 2024-02-02 | 苏州生科智能科技有限公司 | Shock wave sacculus catheter device |
| CN116999118A (en) * | 2022-09-20 | 2023-11-07 | 苏州润迈德智能科技发展有限公司 | Shock wave sacculus catheter device |
| CN115553869A (en) * | 2022-11-15 | 2023-01-03 | 南京沃福曼医疗科技有限公司 | Annular discharge electrode pair array and balloon catheter |
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