CN115337076A - Shock wave balloon catheter - Google Patents
Shock wave balloon catheter Download PDFInfo
- Publication number
- CN115337076A CN115337076A CN202210835767.0A CN202210835767A CN115337076A CN 115337076 A CN115337076 A CN 115337076A CN 202210835767 A CN202210835767 A CN 202210835767A CN 115337076 A CN115337076 A CN 115337076A
- Authority
- CN
- China
- Prior art keywords
- electrode
- balloon catheter
- shock wave
- inner tube
- electrodes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000035939 shock Effects 0.000 title claims abstract description 100
- 239000007788 liquid Substances 0.000 claims abstract description 33
- 239000004020 conductor Substances 0.000 claims description 15
- 239000007769 metal material Substances 0.000 claims description 7
- 229910000566 Platinum-iridium alloy Inorganic materials 0.000 claims description 5
- HWLDNSXPUQTBOD-UHFFFAOYSA-N platinum-iridium alloy Chemical class [Ir].[Pt] HWLDNSXPUQTBOD-UHFFFAOYSA-N 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 229910001182 Mo alloy Inorganic materials 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- MGRWKWACZDFZJT-UHFFFAOYSA-N molybdenum tungsten Chemical compound [Mo].[W] MGRWKWACZDFZJT-UHFFFAOYSA-N 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 239000010410 layer Substances 0.000 description 72
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 210000004204 blood vessel Anatomy 0.000 description 5
- 238000011161 development Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 210000005077 saccule Anatomy 0.000 description 5
- 210000001367 artery Anatomy 0.000 description 4
- 229920000297 Rayon Polymers 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000003902 lesion Effects 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 2
- 239000002872 contrast media Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 201000001320 Atherosclerosis Diseases 0.000 description 1
- 206010028851 Necrosis Diseases 0.000 description 1
- 208000018262 Peripheral vascular disease Diseases 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000003143 atherosclerotic effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 206010008118 cerebral infarction Diseases 0.000 description 1
- 208000026106 cerebrovascular disease Diseases 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 208000029078 coronary artery disease Diseases 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002682 general surgery Methods 0.000 description 1
- 206010020718 hyperplasia Diseases 0.000 description 1
- 208000028867 ischemia Diseases 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000017074 necrotic cell death Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- 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
-
- 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
-
- 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
- A61B2017/22062—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 to be filled with liquid
-
- 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
- A61B2017/22069—Immobilising; Stabilising
Landscapes
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The present invention provides a shock wave balloon catheter comprising: the device comprises an inner tube, a balloon, electrodes, conductive liquid and one or more leads; wherein the balloon has a cavity, the inner tube penetrates the balloon and is at least partially arranged in the cavity; the cavity is filled with the conductive liquid; the electrode is arranged in the cavity and fixed on the outer surface of the inner tube, the electrode comprises a conductive layer, and a sharp structure is arranged on the conductive layer; one end of at least one lead is used for being connected with a pulse power supply, and the other end of at least one lead is spaced from the electrode and is in contact with the conductive liquid. According to the shock wave balloon catheter, the number and the arrangement direction of the sharp structures arranged on the electrodes are changed, so that the emission direction of shock waves can be accurately controlled, the purpose of controlling the emission intensity and the emission direction of the shock waves is achieved, and the problem of instability of the emission intensity of the shock waves of the shock wave balloon catheter is solved.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a shock wave balloon catheter.
Background
Atherosclerosis, the main cause of coronary heart disease, cerebral infarction and peripheral vascular disease, is characterized by fibrous tissue hyperplasia and calcareous deposition in the intima of arteries, leading to thickening and hardening of the arterial wall and narrowing of the lumen of the arteries, and once developed enough to block the lumen of the arteries, can cause ischemia and even necrosis of tissues or organs supplied by the arteries. For severe atherosclerotic lesions, the general surgery adopts treatment means such as cutting saccule, intravascular rotational abrasion and the like, but the treatment means has different degrees of damage to blood vessels.
Intravascular shock wave lithotripsy (ISL) has been clinically applied abroad as an emerging medical technique in recent years. When the shock wave saccule is used, the shock wave saccule is firstly delivered to a calcified lesion part of a blood vessel, then the shock wave saccule is subjected to low-voltage expansion, and finally a high-voltage pulse power supply is started to release high-voltage pulses to the shock wave saccule, so that intermittent shock waves are generated, calcified plaques on the superficial layer and the deep layer of the blood vessel cavity are broken, the blood vessel cavity is fully expanded, and the aim of obviously improving the compliance of the blood vessel is fulfilled.
Nowadays, the shock wave ball bag on the market is realized by the following methods:
the shock wave ball bags on the market are mostly of three-layer annular structures. The outer layer is of an annular metal structure, and a pair of through holes are formed in the outer layer; the middle layer is an annular insulating layer, a pair of through holes are formed in the insulating layer, and the outer layer and the through holes in the middle layer are concentrically arranged; the inner layer is a flat metal structure, is connected with the conducting wire and is arranged at the through holes of the outer layer and the inner layer. When the shock wave ball bag is used, the through holes of the middle layer and the outer layer are filled with conductive liquid, high-voltage pulse is conducted to the inner layer structure through the conducting wire, and the high-voltage pulse punctures the conductive liquid at the through holes to generate shock waves. However, this structure has three disadvantages: (1) The electrode structure is complex, manual bonding technology is mostly adopted, the assembly difficulty is high, and the product yield is low; (2) Foreign matters generated during shock wave treatment easily block the through hole structure, so that the shock waves are uneven, strong and weak, and the treatment effect is greatly reduced; (3) The direction of the shock wave emission is the same as the direction of the through holes, and the shock wave can only be transmitted towards the radial direction of the guide pipe. Because the electrode structure is complicated, the shock wave balloon catheter of the type can only be provided with 2 through holes generally, and the shock waves can only be transmitted towards 2 radial directions, so that the shock wave treatment efficiency is low.
Patent CN208694015U "a sacculus pipe based on electrohydraulic effect" discloses a sacculus pipe, the shock wave electrode in the sacculus pipe is the needle point type, can only adopt modes such as viscose to bond the shock wave electrode to the inner cavity pipe, and the operation degree of difficulty is big, and electrode and inner cavity pipe binding force are poor, and in the shock wave treatment process, the shock wave electrode takes place to drop easily. And the shock wave electrodes can only be arranged to be opposite to the needle points, the shock waves can only be emitted at the positions opposite to the needle points, the shock wave emission efficiency is low, the connection and the arrangement of the wires are difficult, and the production process has no operability.
Disclosure of Invention
In view of the above, the present invention provides a shock wave balloon catheter, which improves the structure of the conventional shock wave balloon catheter, and can solve the defect of uneven discharge in the conventional shock wave balloon catheter, thereby ensuring the accuracy and effectiveness of shock wave treatment.
In order to solve the technical problem, the invention adopts the following technical scheme:
in a first aspect, the present invention provides a shock wave balloon catheter comprising:
the balloon catheter comprises an inner tube, a balloon, electrodes, conductive liquid and one or more leads;
wherein the balloon has a chamber, the inner tube extending through the balloon and at least partially disposed in the chamber;
the cavity is filled with the conductive liquid;
the electrode is arranged in the cavity and fixed on the outer surface of the inner tube, the electrode comprises a conductive layer, and a sharp structure is arranged on the conductive layer;
at least part of the leads are arranged in the chamber, one end of at least one lead is used for being connected with a pulse power supply, and the other end of at least one lead is spaced from the electrode and is in contact with the conductive liquid.
Further, the electrode is of an annular structure, and the electrode is sleeved on the outer surface of the inner tube; and/or the electrode is of an annular structure, the electrode sleeve is arranged on the outer surface of the inner tube, the electrode comprises an insulating layer and a conducting layer, the insulating layer is arranged between the conducting layer and the conducting wire, the insulating layer is arranged between the conducting layer and the inner tube, or the conducting layer is arranged between the insulating layer and the inner tube.
Further, the conductive layer is made of a metal material, and the metal material comprises at least one of stainless steel, platinum-iridium alloy and tungsten-molybdenum alloy; and/or the insulating layer is made of plastic materials.
Further, the electrode is a ring-shaped structure, and the sharp structure extends along the axial direction of the electrode; and/or the shape of the sharp structure comprises a structure with an arc-shaped edge and a straight edge, an ellipse, a circle or a triangle; and/or the number of the sharp structures is multiple, and the plurality of sharp structures are arranged at intervals along the circumferential direction of the electrode; and/or the lead comprises a conductor and an insulating protection layer coated on the conductor, wherein the conductor is exposed in the area of the lead corresponding to the sharp structure; and/or the number of the electrodes is multiple, and the distance between the adjacent electrodes can be adjusted.
Furthermore, the number of the electrodes is multiple, the electrodes are arranged at intervals along the axial direction of the inner tube, and the arrangement gap between the adjacent electrodes is 1-25 mm.
Furthermore, the number of the electrodes is multiple, and the connection mode between at least two of the electrodes is parallel connection or series connection.
Further, the outer surface of the inner tube has a groove, and the lead is disposed in the groove.
Further, the shock wave balloon catheter further comprises: a pressure sensor; the pressure sensor is used for detecting the pressure inside the chamber.
Further, the shock wave balloon catheter further comprises: the developing ring is sleeved on the inner pipe and arranged in the cavity.
Further, the shock wave balloon catheter further comprises: the voltage range of the pulse power supply is 500V-5000V, and the pulse width is 1-100 microseconds.
The technical scheme of the invention has the following beneficial effects:
the present invention provides a shock wave balloon catheter comprising: the device comprises an inner tube, a balloon, electrodes, conductive liquid and one or more leads; wherein the balloon has a chamber, the inner tube extending through the balloon and at least partially disposed in the chamber; the cavity is filled with the conductive liquid; the electrode is arranged in the cavity and fixed on the outer surface of the inner tube, the electrode comprises a conducting layer, and a sharp structure is arranged on the conducting layer; at least part of the leads are arranged in the chamber, one end of at least one lead is used for being connected with a pulse power supply, and the other end of at least one lead is spaced from the electrode and is in contact with the conductive liquid.
The shock wave balloon catheter improves the structure of the traditional shock wave balloon catheter, and the shock wave balloon catheter can accurately control the emission direction of shock waves by changing the number and the arrangement direction of the sharp structures arranged on the electrodes, so that the purpose of controlling the emission intensity and the direction of the shock waves is achieved, and the problem of instability of the emission intensity of the shock waves of the shock wave balloon catheter is solved. Meanwhile, the invention simplifies the structural design of the shock wave sacculus catheter, overcomes the technical defects of complex structure and high assembly difficulty of the original shock wave sacculus catheter, avoids the problem of unstable production process caused by a large amount of manual operations, improves the stability and continuous production efficiency of product quality, reduces the manufacturing cost of the shock wave sacculus catheter and reduces medical expenses.
Drawings
FIG. 1 is a schematic view of a shock wave balloon catheter;
FIG. 2 is a schematic diagram of a shock wave balloon catheter with parallel electrodes;
FIG. 3 is a schematic diagram of the series connection of electrodes in a shock wave balloon catheter;
FIG. 4 is a schematic view of the inner tube;
FIG. 5 is a schematic view of the structure of an electrode;
reference numerals are as follows:
the device comprises an inner tube 1, a balloon 2, an electrode 3, conductive liquid 4, a lead 5, a copper core 6, a pressure sensor 7, a developing ring 8, a pulse power supply 9, an outer tube 10 and a catheter seat 11;
an insulating layer 301, a conductive layer 302, a sharp structure 303;
filling lumen opening 1101, guidewire penetration lumen opening 1102.
Detailed Description
For a further understanding of the invention, reference will now be made to the preferred embodiments of the invention in conjunction with the following examples, but it will be understood that the description is intended to illustrate the features and advantages of the invention further, and not to limit the invention.
The shockwave balloon catheter of the present invention is further explained below with reference to fig. 1 to 5.
In a first aspect, the present invention provides a shock wave balloon catheter comprising:
the balloon catheter comprises an inner tube 1, a balloon 2, electrodes 3, conductive liquid 4 and one or more leads 5; wherein the balloon 2 is provided with a cavity, and the inner tube 1 penetrates through the balloon 2 and is at least partially arranged in the cavity; the conductive liquid 4 is filled in the cavity; the electrode 3 is arranged in the cavity and fixed on the outer surface of the inner tube 1, the electrode 3 comprises a conducting layer 302, and a sharp structure 303 is arranged on the conducting layer 302; at least part of the leads 5 are arranged in the chamber, one end of at least one lead 5 is used for being connected with a pulse power supply 9, and the other end of at least one lead 5 is spaced from the electrode 3 and is in contact with the conductive liquid 4.
The invention provides a shock wave sacculus catheter which is structurally shown as figure 1. The shock wave balloon catheter mainly comprises an inner tube 1, a balloon 2, an electrode 3, conductive liquid 4 and a lead 5, wherein the balloon 2 is provided with a cavity, the inner tube 1 penetrates through the balloon 2 and is at least partially arranged in the cavity, and the electrode 3 is fixed on the outer surface of the inner tube 1 and is arranged in the cavity. The electrode 3 comprises a conductive layer 302 therein, the conductive layer 302 is provided with a sharp structure 303, and the chamber is filled with the conductive liquid 4. Meanwhile, one end of a lead 5 is arranged and used for being connected with a pulse power supply 9, and the other end of the lead 5 is spaced from the electrode 3 and is in contact with the conductive liquid 4. In use, the pulse power supply 9 generates a high-voltage pulse signal and conducts the high-voltage pulse signal through the lead 5, and the high-voltage pulse current breaks down the conductive liquid 4 arranged in the chamber to generate axial and radial shock waves. At the same time, the pointed structures 303 provided on the conductive layer 302 of the electrode 3 serve to release shock waves. The shock wave balloon catheter can accurately control the emission direction of shock waves by changing the number and the arrangement direction of the sharp structures 303 arranged on the electrode 3.
The shock wave balloon catheter improves the structure of the traditional shock wave balloon catheter, and the shock wave balloon catheter can accurately control the emission direction of shock waves by changing the number and the arrangement direction of the sharp structures 303 arranged on the electrode 3, so that the purpose of controlling the emission intensity and the emission direction of the shock waves is achieved, and the problem of instability of the emission intensity of the shock waves of the shock wave balloon catheter is solved. Meanwhile, the invention simplifies the structural design of the shock wave sacculus conduit, overcomes the technical defects of complex structure and high assembly difficulty of the original shock wave sacculus conduit, avoids the problem of unstable production process caused by a large amount of manual operations, improves the stability and continuous production efficiency of the product quality, reduces the manufacturing cost of the shock wave sacculus conduit and reduces the medical expense.
According to some embodiments of the present invention, the conductive liquid 4 is preferably saline, a contrast agent, and a mixed solution of saline and a contrast agent.
According to some embodiments of the present invention, the electrode 3 is a ring structure, and the electrode 3 is sleeved on the outer surface of the inner tube 1; and/or the electrode 3 is a ring structure, the electrode 3 is sleeved on the outer surface of the inner tube 1, the electrode 3 comprises an insulating layer 301 and a conducting layer 302, the insulating layer 301 is arranged between the conducting layer 302 and the lead 5, the insulating layer 301 is arranged between the conducting layer 302 and the inner tube 1, or the conducting layer 302 is arranged between the insulating layer 301 and the inner tube 1.
According to some embodiments of the present invention, the conductive layer 302 is a metal material, and the metal material includes at least one of stainless steel, platinum-iridium alloy and tungsten-molybdenum alloy; and/or the insulating layer 301 is a plastic material.
Referring to fig. 2 and 3, the electrode 3 disposed in the shockwave balloon catheter in the present invention is preferably a ring-shaped structure, and the electrode 3 includes a ring-shaped insulating layer 301 disposed on the outer surface of the inner tube 1, and a conductive layer 302 disposed on the outer surface of the insulating layer 301. The insulating layer 301 is disposed inside the conductive layer 302, and is used for fixing and protecting the conductive layer 302. Meanwhile, the electrode 3 is not limited to the above-described arrangement, and in some embodiments, the electrode 3 may also be arranged in a ring structure with an inner layer being the conductive layer 302 and an outer layer being the insulating layer 301. Preferably, the conductive layer 302 is made of a metal material such as stainless steel, platinum-iridium alloy, tungsten-molybdenum alloy, or the like, and the insulating layer 301 is made of a plastic material having a good insulating property such as PI (polyimide), PTFE, or the like.
According to some embodiments of the invention, the electrode 3 is a ring-shaped structure, the pointed structure 303 extending in the axial direction of the electrode 3; and/or the shape of the pointed structure 303 comprises a structure with an arc-shaped edge and a straight edge, an ellipse, a circle or a triangle; and/or the number of the sharp structures 303 is multiple, and a plurality of the sharp structures 303 are arranged at intervals along the circumferential direction of the electrode 3; and/or the lead 5 comprises a conductor and an insulating protection layer coated on the conductor, wherein the conductor is exposed on the lead 5 in the area corresponding to the sharp structure 303; and/or the number of the electrodes 3 is multiple, and the distance between the adjacent electrodes 3 can be adjusted.
Referring to fig. 2, 3 and 5, the electrode 3 is a ring-shaped structure, and the pointed structure 303 extends along the axial direction of the electrode 3; the shape of the sharp structure 303 comprises a structure with an arc edge and a straight edge, an ellipse, a circle or a triangle; the number of the pointed structures 303 is multiple, and the plurality of the pointed structures 303 are arranged at intervals along the circumferential direction of the electrode 3.
Meanwhile, the lead 5 comprises a conductor and an insulating protection layer coated on the conductor, and the conductor is exposed in an area corresponding to the sharp structure 303 on the lead 5. Preferably, the insulating protective layer coated on the conducting wire 5 is an enameled wire with good insulating performance, and a wire stripper or other equipment is used to strip part of the insulating layer of the conducting wire 5 so as to expose a conductor (such as the copper core 6). The lead 5 is connected with the pulse power supply 9, and the pulse power supply 9 generates a high-voltage pulse signal which is conducted to the position of the copper core 6 exposed out of the lead 5 through the lead 5. The high voltage pulse current breaks down the conductive liquid 4 between the copper core 6 and the conductive layer 302, generating axial and radial shock waves. The exposed copper core 6 may be protected by a metal material such as stainless steel, platinum-iridium alloy, etc. to improve the mechanical strength of the copper core 6.
According to some embodiments of the present invention, the number of the electrodes 3 is plural, the plural electrodes 3 are arranged at intervals along the axial direction of the inner tube 1, and the arrangement gap between the adjacent electrodes 3 is 1 to 25mm.
According to some embodiments of the present invention, the number of the electrodes 3 is plural, and at least two of the electrodes 3 are connected in parallel or in series.
According to some embodiments of the invention, the outer surface of the inner tube 1 has grooves in which the wires 5 are arranged.
As shown in the accompanying drawings 2, 3 and 4, the inner tube 1 is a special-shaped tube, a groove is arranged on the outer surface of the inner tube 1, the lead 5 is nested in the groove on the outer surface of the inner tube 1 in a mode of viscose glue and the like, and then the electrode 3 is nested on the outer surface of the lead 5 through processes of viscose glue, hot-press welding and the like, so that the structure of the electrode 3 is combined more stably, the risk that the electrode 3 falls off in the shock wave treatment process of the electrode 3 is avoided, the safety is improved, and the production process is simpler and more convenient.
According to some embodiments of the invention, the shock wave balloon catheter further comprises: a pressure sensor 7; the pressure sensor 7 is used to detect the pressure inside the chamber. As shown in fig. 1, the shock wave balloon catheter further comprises a pressure sensor 7, the pressure sensor 7 is connected with a pulse power supply 9 through a lead 5, a sensor information acquisition module is designed inside the pulse power supply 9, the pressure sensor 7 is used for monitoring pressure change inside the balloon 2 in real time, capturing information such as shock wave intensity generated when the electrode 3 discharges and the like for acquisition and analysis, and automatically adjusting discharge parameters. Meanwhile, the pressure sensor 7 can monitor the sealing condition of the balloon 2 in real time, judge whether the balloon 2 is broken or not, and improve the safety of medical instruments.
According to some embodiments of the invention, the shock wave balloon catheter further comprises: at least two development rings 8, development ring 8 cover is established on the inner tube 1, development ring 8 set up in the cavity, development ring 8 is the development ring of X ray of opacity, plays the location the effect of the position of sacculus 2.
According to some embodiments of the present invention, the shock wave balloon catheter further comprises an outer tube 10, one end of the outer tube 10 is connected with one end of the balloon 2, and the outer tube 10 is used for supporting and protecting the inner tube 1 and the guide wire 5.
According to some embodiments of the present invention, the shockwave balloon catheter further comprises a catheter base 11, wherein an inflation lumen 1101 and a guide wire penetrating lumen 1102 are arranged on the catheter base 11, wherein the inflation lumen 1101 is used for filling a conductive liquid to expand the balloon 2; the guidewire passage lumen opening 1102 is used to pass an introducer guidewire.
According to some embodiments of the invention, the shock wave balloon catheter further comprises: the voltage range of the pulse power supply 9 is 500V-5000V, and the pulse width is 1-100 microseconds.
The invention is further illustrated by the following specific examples.
Example 1
The present embodiment provides a shock wave balloon catheter, including: the device comprises an inner tube 1, a balloon 2, two electrodes 3, conductive liquid 4, a plurality of leads 5, a pressure sensor 7, a developing ring 8 and a pulse power supply 9; wherein the balloon 2 is provided with a cavity, and the inner tube 1 penetrates through the balloon 2 and is at least partially arranged in the cavity; the conductive liquid 4 is filled in the cavity; the electrodes 3 are arranged in the cavity, fixed on the outer surface of the inner tube 1 and arranged at intervals; at least part of the lead 5 is arranged in the chamber, a conductor is exposed on the lead 5 at the area corresponding to the sharp structure 303, one end of the lead 5 is used for being connected with a pulse power supply 9, and the other end of the lead 5 is spaced from the electrode 3 and is contacted with the conductive liquid 4. The pressure sensor 7 is connected with the pulse power supply 9 through a lead 5, and a sensor information acquisition module is designed in the pulse power supply 9.
In this embodiment, the two electrodes 3 of the shockwave balloon catheter are connected in parallel, as shown in fig. 2. The electrode 3 is of an annular structure, the outer layer of the electrode 3 is a conductive layer 302 and an inner insulating layer 301, and the lead 5 is located inside the insulating layer 301. The lead 5 is disposed outside the insulating layer 301 and fixed by an adhesive or the like. The copper core 6 of the exposed wire 5 may be disposed at the front or rear end of the associated electrode 3. In use, the pulse power supply 9 generates a high-voltage pulse signal, and the high-voltage pulse signal is respectively transmitted to the two exposed copper cores 6 through the conducting wires 5 (two conducting wires 5 at the upper part of fig. 2), then is respectively transmitted through the conducting layers 302 of the two electrodes, and finally is transmitted out through the conducting wires 5 positioned below the picture, and in the process, the high-voltage pulse current breaks through the conducting liquid 4 arranged in the cavity to generate axial and radial shock waves. At the same time, the pointed structures 303 provided on the conductive layer 302 of the electrode 3 serve to release shock waves.
In this embodiment, the electrodes 3 are connected in parallel, and can work independently without pairwise paired discharge. The shock wave sacculus catheter can timely adjust the discharge parameters of different electrodes 3 according to medical image results and different calcified lesions, adjust the shock wave emission intensity of different electrodes 3 and improve the accuracy and effectiveness of shock wave treatment.
In a specific application, the gap between the electrodes 3 is configured to be 1-25mm, the voltage range of the pulse power supply 9 is 500V-5000V, and the pulse width of the pulse is 1-100 microseconds. The discharge intensity can be changed by changing the gap between the electrodes 3 or changing parameters such as the voltage and the pulse width of the pulse power supply 9, the intensity of the shock wave can be accurately controlled, and the safety and the effectiveness of the shock wave treatment can be ensured.
Example 2
The present embodiment provides a shock wave balloon catheter, which has the same structure as that in embodiment 1, and includes: the device comprises an inner tube 1, a balloon 2, two electrodes 3, conductive liquid 4, a plurality of leads 5, a pressure sensor 7, a developing ring 87 and a pulse power supply 9; wherein, the balloon 2 is provided with a chamber, and the inner tube 1 penetrates through the balloon 2 and is at least partially arranged in the chamber; the conductive liquid 4 is filled in the cavity; the electrodes 3 are arranged in the cavity, fixed on the outer surface of the inner tube 1 and arranged at intervals; at least part of the lead 5 is arranged in the chamber, a conductor is exposed on the lead 5 at the area corresponding to the sharp structure 303, one end of the lead 5 is used for being connected with a pulse power supply 9, and the other end of the lead 5 is spaced from the electrode 3 and is contacted with the conductive liquid 4. The pressure sensor 7 is connected with the pulse power supply 9 through a lead 5, and a sensor information acquisition module is designed in the pulse power supply 9.
In this embodiment, the two electrodes 3 of the shockwave balloon catheter are connected in series, as shown in fig. 3. In the course of using the shock wave balloon catheter in this embodiment, the pulse power supply 9 generates high-voltage pulse signals, and the high-voltage pulse signals are respectively conducted to the exposed copper core 6 through one of the wires 5, for example, the high-voltage pulse signals are conducted to the exposed copper core 6 of the same wire through the wire 5 at the upper right in fig. 3, then conducted to the wire 5 at the lower left in fig. 3 through the conductive layer 302 of the right electrode, and finally conducted through the electrode at the left side and sent out from the wire 5 at the upper left, and in this process, the high-voltage pulse current breaks down the conductive liquid 4 arranged in the chamber to generate axial and radial shock waves. In this embodiment, the electrodes 3 cannot be independently controlled, and parameters such as the shock wave emission frequency and the intensity of the electrodes 3 are consistent.
Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and the like, herein does not denote any order, quantity, or importance, but rather the terms "first," "second," and the like are used to distinguish one element from another. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships are changed accordingly.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A shock wave balloon catheter, comprising:
the balloon catheter comprises an inner tube, a balloon, electrodes, conductive liquid and one or more leads;
wherein the balloon has a chamber, the inner tube extending through the balloon and at least partially disposed in the chamber;
the cavity is filled with the conductive liquid;
the electrode is arranged in the cavity and fixed on the outer surface of the inner tube, the electrode comprises a conducting layer, and a sharp structure is arranged on the conducting layer;
at least part of the leads are arranged in the chamber, one end of at least one lead is used for being connected with a pulse power supply, and the other end of at least one lead is spaced from the electrode and is in contact with the conductive liquid.
2. The shock wave balloon catheter of claim 1, wherein the electrode is an annular structure that fits over an outer surface of the inner tube; and/or
The electrode is of an annular structure, the electrode sleeve is arranged on the outer surface of the inner tube, the electrode comprises an insulating layer and a conducting layer, the insulating layer is arranged between the conducting layer and the conducting wire, the insulating layer is arranged between the conducting layer and the inner tube, or the conducting layer is arranged between the insulating layer and the inner tube.
3. The shock wave balloon catheter of claim 2, wherein the electrically conductive layer is a metallic material comprising at least one of stainless steel, platinum iridium alloy, and tungsten molybdenum alloy; and/or
The insulating layer is made of plastic materials.
4. The shock wave balloon catheter of claim 1, wherein the electrode is a ring-like structure, the pointed structure extending in an axial direction of the electrode; and/or
The shape of the sharp structure comprises a structure with an arc edge and a linear edge, an ellipse, a circle or a triangle; and/or
The number of the sharp structures is multiple, and the plurality of sharp structures are arranged at intervals along the circumferential direction of the electrode; and/or
The lead comprises a conductor and an insulating protection layer coated on the conductor, and the conductor is exposed in an area corresponding to the sharp structure on the lead; and/or
The number of the electrodes is multiple, and the distance between the adjacent electrodes can be adjusted.
5. The shock wave balloon catheter according to claim 1, wherein the number of the electrodes is plural, the plural electrodes are arranged at intervals along the axial direction of the inner tube, and the arrangement gap between the adjacent electrodes is 1 to 25mm.
6. The shockwave balloon catheter of claim 1, wherein said plurality of electrodes are connected in parallel or in series, and wherein at least two of said electrodes are connected in parallel or in series.
7. The shock wave balloon catheter of claim 1, wherein the outer surface of the inner tube has a groove, the wire being disposed in the groove.
8. The shockwave balloon catheter of claim 1, further comprising:
a pressure sensor; the pressure sensor is used for detecting the pressure inside the chamber.
9. The shock wave balloon catheter of claim 1, further comprising therein:
the developing ring is sleeved on the inner pipe and arranged in the cavity.
10. The shock balloon catheter according to claim 1, further comprising:
the voltage range of the pulse power supply is 500V-5000V, and the pulse width of the pulse power supply is 1-100 microseconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210835767.0A CN115337076A (en) | 2022-07-15 | 2022-07-15 | Shock wave balloon catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210835767.0A CN115337076A (en) | 2022-07-15 | 2022-07-15 | Shock wave balloon catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115337076A true CN115337076A (en) | 2022-11-15 |
Family
ID=83947875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210835767.0A Pending CN115337076A (en) | 2022-07-15 | 2022-07-15 | Shock wave balloon catheter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115337076A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115778487A (en) * | 2023-02-02 | 2023-03-14 | 上海佳沐垚医疗科技有限公司 | Shock wave balloon catheter and catheter system for targeted therapy |
| CN116158807A (en) * | 2023-04-26 | 2023-05-26 | 深圳英美达医疗技术有限公司 | Shock wave balloon catheter |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170135709A1 (en) * | 2015-11-18 | 2017-05-18 | Shockwave Medical, Inc. | Shock wave electrodes |
| US20190150960A1 (en) * | 2017-11-17 | 2019-05-23 | Shockwave Medical, Inc. | Low profile electrodes for a shock wave catheter |
| CN110811761A (en) * | 2019-05-17 | 2020-02-21 | 谱创医疗科技(上海)有限公司 | Shock wave generation system applied to angioplasty |
| CN113117220A (en) * | 2021-04-14 | 2021-07-16 | 深圳市赛禾医疗技术有限公司 | Medicine balloon catheter, medicine balloon catheter system and control method thereof |
| CN113289212A (en) * | 2021-06-04 | 2021-08-24 | 乐普（北京）医疗器械股份有限公司 | Shock wave auxiliary medicine perfusion balloon catheter and medical equipment |
| CN215458401U (en) * | 2021-06-23 | 2022-01-11 | 苏州中荟医疗科技有限公司 | Shock wave generating device for angiostenosis lesion |
| CN113951972A (en) * | 2020-12-16 | 2022-01-21 | 深圳市赛禾医疗技术有限公司 | Pressure wave sacculus pipe |
| CN216319437U (en) * | 2021-11-03 | 2022-04-19 | 上海微创旋律医疗科技有限公司 | Medical device |
-
2022
- 2022-07-15 CN CN202210835767.0A patent/CN115337076A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170135709A1 (en) * | 2015-11-18 | 2017-05-18 | Shockwave Medical, Inc. | Shock wave electrodes |
| US20190150960A1 (en) * | 2017-11-17 | 2019-05-23 | Shockwave Medical, Inc. | Low profile electrodes for a shock wave catheter |
| CN111601560A (en) * | 2017-11-17 | 2020-08-28 | 冲击波医疗公司 | Low profile electrode for a shock waveguide |
| CN110811761A (en) * | 2019-05-17 | 2020-02-21 | 谱创医疗科技(上海)有限公司 | Shock wave generation system applied to angioplasty |
| CN113951972A (en) * | 2020-12-16 | 2022-01-21 | 深圳市赛禾医疗技术有限公司 | Pressure wave sacculus pipe |
| CN113117220A (en) * | 2021-04-14 | 2021-07-16 | 深圳市赛禾医疗技术有限公司 | Medicine balloon catheter, medicine balloon catheter system and control method thereof |
| CN113289212A (en) * | 2021-06-04 | 2021-08-24 | 乐普（北京）医疗器械股份有限公司 | Shock wave auxiliary medicine perfusion balloon catheter and medical equipment |
| CN215458401U (en) * | 2021-06-23 | 2022-01-11 | 苏州中荟医疗科技有限公司 | Shock wave generating device for angiostenosis lesion |
| CN216319437U (en) * | 2021-11-03 | 2022-04-19 | 上海微创旋律医疗科技有限公司 | Medical device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115778487A (en) * | 2023-02-02 | 2023-03-14 | 上海佳沐垚医疗科技有限公司 | Shock wave balloon catheter and catheter system for targeted therapy |
| CN116158807A (en) * | 2023-04-26 | 2023-05-26 | 深圳英美达医疗技术有限公司 | Shock wave balloon catheter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115337076A (en) | Shock wave balloon catheter | |
| US10993832B2 (en) | Ablation devices and methods with ultrasonic imaging cross-reference to related applications | |
| US9561043B2 (en) | Ablation devices with sensors structures | |
| US7854740B2 (en) | Intraluminal guidance system using bioelectric impedance | |
| JP3898754B2 (en) | Imaging, potential detection and ablation catheters | |
| US5711298A (en) | High resolution intravascular signal detection | |
| AU2006213956B2 (en) | Deflectable tip catheter with guidewire tracking mechanism | |
| AU2011254066B2 (en) | Lasso catheter with ultrasound transducer | |
| EP1179995B1 (en) | Balloon anchor wire | |
| CN100352396C (en) | System and methods for locating and ablating arrhythomogenic tissues | |
| US6672312B2 (en) | Pulmonary vein ablation with myocardial tissue locating | |
| AU770121B2 (en) | Catheter positioning system | |
| WO1995007657A1 (en) | Mapping and ablation system, catheter and method | |
| US11751905B2 (en) | Transseptal crossing system | |
| JP2001510354A (en) | Ablation and detection medical catheter | |
| CN114886503A (en) | Shock wave sacculus pipe based on point discharge | |
| CN115317072A (en) | Intravascular imaging shock wave balloon catheter and medical equipment | |
| US20220008128A1 (en) | Medical device | |
| CN116158807B (en) | Shock wave balloon catheter | |
| CN116392199A (en) | Shock wave balloon catheter and feedback system thereof | |
| CA2471106A1 (en) | Imaging, electrical potential sensing and ablation catheters | |
| CN117860338A (en) | Impact waveguide tube | |
| CN117297712A (en) | Electrode saccule catheter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |