[go: up one dir, main page]

WO2015167256A1 - Ensemble cathéter - Google Patents

Ensemble cathéter Download PDF

Info

Publication number
WO2015167256A1
WO2015167256A1 PCT/KR2015/004342 KR2015004342W WO2015167256A1 WO 2015167256 A1 WO2015167256 A1 WO 2015167256A1 KR 2015004342 W KR2015004342 W KR 2015004342W WO 2015167256 A1 WO2015167256 A1 WO 2015167256A1
Authority
WO
WIPO (PCT)
Prior art keywords
balloon
catheter assembly
electrode
catheter body
catheter
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.)
Ceased
Application number
PCT/KR2015/004342
Other languages
English (en)
Korean (ko)
Inventor
김영학
최재순
황창모
남기병
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Asan Foundation
Original Assignee
Asan Foundation
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from KR1020140051264A external-priority patent/KR20150125035A/ko
Priority claimed from KR1020140051266A external-priority patent/KR101672879B1/ko
Application filed by Asan Foundation filed Critical Asan Foundation
Publication of WO2015167256A1 publication Critical patent/WO2015167256A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
    • A61B5/053—Measuring electrical impedance or conductance of a portion of the body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/25—Bioelectric electrodes therefor
    • A61B5/279—Bioelectric electrodes therefor specially adapted for particular uses
    • A61B5/28—Bioelectric electrodes therefor specially adapted for particular uses for electrocardiography [ECG]
    • A61B5/283—Invasive
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/10—Balloon catheters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M29/00—Dilators with or without means for introducing media, e.g. remedies
    • A61M29/02—Dilators made of swellable material

Definitions

  • This disclosure relates generally to catheter assemblies, and more particularly to catheter assemblies that heat tissue efficiently.
  • Catheter ablation is a method of treating arrhythmia by inserting an ablation catheter assembly into the heart and removing the myocardial tissue by applying heat between the electrode and the counterplate of the tip of the catheter assembly. More specifically, catheter ablation is mainly performed for the treatment of tachyarrhythmias such as paroxysmal atrophy, atrial tachycardia, and paroxysmal ventricular tachycardia, and after diagnosing the cause and site of the arrhythmia by cardiac electrophysiological examination.
  • the electrode attached to the ablation catheter assembly reaches the arrhythmia generating site in the heart, where the electrode is brought into contact with the myocardial tissue causing the arrhythmia, and heat is applied at a temperature of 50 to 60 ° C. for about 60 seconds to cause the arrhythmia. It is a technique to remove tissue.
  • the ablation catheter assembly currently used has a metal electrode at the tip, and the metal electrode is in contact with the myocardial tissue causing the arrhythmia in a point-to-point manner, and a removal line is formed while moving little by little to remove the site of the arrhythmia.
  • Related prior art is US Pat. No. 7,722,605.
  • FIG. 1 is a view showing an example in which the balloon ablation catheter assembly described in US Patent No. 6,952,615 is used. For convenience of description, the terms and reference numerals have been changed.
  • the ablation catheter assembly 10 to which the balloon is attached includes a catheter body 12, a balloon 11, an RF generator 20, a temperature measuring device 21, and a counter electrode 22.
  • the ablation catheter assembly 10 is showing removal of myocardial tissue that requires removal of the atrium 13 around the inlet of the pulmonary artery 14.
  • the direction in which the balloon 11 is attached in the ablation catheter assembly 10 is called the front end, and the direction in which the RF generator 20 is located is called the rear end.
  • the electrode 15 is disposed on the surface of the balloon 11 in the prior art disclosed in FIG. 1, the electrode 15 does not directly remove the myocardial tissue that requires removal of the atrium 13.
  • Electrode 15 in the prior art serves to uniformly raise the temperature of the liquid inside the balloon (11). Myocardial tissue requiring removal of the atria 13 is removed by the surface of the balloon 11 which has risen due to the liquid inside the balloon 11.
  • the electrode 15 is connected to the RF generator 20 through wires inside the catheter body 12.
  • the catheter body supporting the balloon has a problem that the catheter body may be flexible and bent due to the heating of the balloon, thereby deviating from the site of the myocardial tissue that needs to be removed.
  • a catheter assembly in which a balloon is attached and a catheter assembly having one electrode at the tip of the catheter assembly and a catheter assembly having a plurality of electrodes at the tip of the catheter assembly and a plurality of curves at the tip are known. have.
  • the prior art is US Patent No. 5,823,955.
  • FIG. 2 is a view illustrating an example of a catheter assembly having a plurality of electrodes at a tip portion of the catheter assembly described in US Patent No. 5,823,955 and a tip portion having a plurality of curves.
  • the terms and reference numerals have been changed.
  • the catheter assembly 30 having a plurality of electrodes includes a catheter body 31, a catheter handle 37, rings 32, 33, 34 for manipulating pulley wires, and electrodes 35, 36.
  • pulley wires disposed inside the catheter body 31 are connected to the rings 32, 33, and 34, respectively.
  • two curves 41, 42 can be created at the tip 40 of the catheter assembly 30.
  • a space for disposing a plurality of pulley wires is required inside the catheter body.
  • the space inside the catheter body becomes smaller, but as the function of the catheter becomes complicated such as a temperature sensor, an electrocardiogram device, etc., the parts that need to enter the catheter body become more numerous. It is necessary to free space.
  • the present disclosure provides a balloon-attached catheter assembly that solves the problem of balloon-attached ablation catheter assembly.
  • the present disclosure provides a catheter assembly that solves the problem of the catheter assembly having a plurality of electrodes at the tip, making a plurality of curves.
  • a catheter assembly comprising: a catheter body; A plurality of balloons attached to the distal end along the longitudinal direction of the catheter body; And, the electrode is connected to one or more wires on the surface of the balloon attached to the rear end of the catheter body of the plurality of balloons; is provided with a catheter assembly, characterized in that disposed.
  • a catheter assembly comprising: a catheter body; A plurality of electrodes disposed along the longitudinal direction of the catheter body; And a wire connected to each of the plurality of electrodes, wherein each of the wires is moved individually so that the tip portion of the catheter body has a plurality of curves.
  • FIG. 1 is a view showing an example in which the balloon ablation catheter assembly described in US Patent No. 6,952,615 is used;
  • FIG. 2 is a view showing an example of a catheter assembly having a plurality of electrodes at the tip of the catheter assembly described in US Patent No. 5,823,955,
  • FIG. 3 is a view illustrating an example of an ablation catheter assembly having a plurality of electrodes disposed thereon according to the present disclosure
  • FIG. 4 is a view illustrating another example of an ablation catheter assembly having a plurality of electrodes disposed thereon according to the present disclosure
  • FIG. 5 illustrates another example of an ablation catheter assembly having a plurality of electrodes disposed thereon according to the present disclosure
  • FIG. 6 is a view illustrating an example in which an ablation catheter assembly in which a plurality of electrodes is disposed according to the present disclosure is used;
  • FIG. 7 is a view showing an example in which the distal end portion of the ablation catheter assembly having a plurality of electrodes according to the present disclosure has a plurality of curves
  • FIG. 8 is a view showing an example of an balloon ablation catheter assembly having a balloon according to the present disclosure
  • FIG. 9 is a view showing that the balloon is inflated while the electrode is in close contact with the inner surface of the balloon
  • FIG. 10 is a view showing another example of an balloon ablation catheter assembly according to the present disclosure.
  • FIG. 11 is a view showing an example of a balloon shape used in the balloon ablation catheter assembly according to the present disclosure
  • FIG. 12 is a view showing an example in which an balloon ablation catheter assembly according to the present disclosure is used.
  • FIG. 13 is a view showing another example of a balloon shape used in the balloon ablation catheter assembly according to the present disclosure.
  • FIG 3 is a view illustrating an example of an ablation catheter assembly in which a plurality of electrodes is disposed according to the present disclosure.
  • the ablation catheter assembly 50 in which a plurality of electrodes is disposed includes a plurality of electrodes 53, 54, and 55 disposed at the tip portion 52 along the length direction of the catheter body 51 and the catheter body 51. , 56, 57).
  • the number of electrodes can be arrange
  • FIG. 3 (b) shows the arrangement of the wires 60, 61, 62, 63, 64 connected to the electrodes 53, 54, 55, 56, and 57, respectively, in a cross section along AA ′.
  • the wire 60 is connected to the electrode 53 and the wire 61 is connected to the electrode 54.
  • the wire 62 is connected to the electrode 55.
  • the electric wire 63 is connected to the electrode 56, and the electric wire 64 is connected to the electrode 57, respectively.
  • one electrode is provided for each electrode.
  • wires are connected, more than one wire can be connected if required for each electrode.
  • each wire is arranged in the same plane in Figure 3 (b) may be arranged in a different plane if necessary.
  • structures other than wires are not shown.
  • the manner in which the wires and the electrodes disposed on the surface of the catheter body are connected is known to those skilled in the art and has not been described separately.
  • 3 (c) shows that the wire is disposed inside the catheter body 51 in a cross-section for BB ′.
  • Wires 61, 62, 63, and 64 connected to the electrodes 54, 55, 56, and 57 disposed on the side of the catheter body 51 allow the tip 52 of the catheter body 51 to have a plurality of curves. This will be described in FIG. 7.
  • the wires are preferably disposed in the channels 70, 71, 72, 73, 74 to move through the catheter body 51. The smaller the friction between the inner surface of the channel and the outer surface of the wire, the better. To reduce the friction force, a friction reducing material can be inserted between the inner surface of the channel and the outer surface of the wire.
  • the wire 60 disposed in the center of the catheter body 51 preferably has elasticity to maintain a straight line shape, and the elastic force applied to the wires 61, 62, 63, and 64 may be removed. At this time, the distal end portion 52 of the catheter body 51 may return to a straight line without a plurality of curves.
  • FIG. 4 is a view illustrating another example of an ablation catheter assembly having a plurality of electrodes disposed thereon according to the present disclosure.
  • the ablation catheter assembly 80 in which a plurality of electrodes is disposed according to the present disclosure includes a catheter body 84, a hole 81, a temperature sensor 82, and an electrode 83.
  • Temperature control is important when removing the myocardial tissue that needs to be removed using electrode 83. If the temperature is lower than the temperature required for removal, sufficient removal cannot be achieved. In particular, when the temperature is high, unnecessary bubbles may be generated by heating blood, which may be a problem when the bubbles cannot be discharged from the body.
  • movement which removes the myocardial tissue using the electrode 83 is about 50-60 degreeC. It is desirable to place the temperature sensor 82 to maintain the proper temperature. It is particularly desirable to place them around the electrode 82 for accurate temperature measurements.
  • thermocouple As the temperature sensor 62, a thermocouple, a thermistor, or the like known to those skilled in the art can be used.
  • the temperature may be adjusted by adjusting the amount of current flowing into the electrode 83.
  • the temperature may be controlled by sending a material that suppresses the temperature rise around the electrode 83.
  • physiological saline is sent to suppress the temperature rise around the electrode 83 by the latter method.
  • the physiological saline is discharged through the hole 81 around the electrode 83.
  • 4 (b) shows an example of discharging physiological saline through the hole 81.
  • FIG. (B) is sectional drawing with respect to CC 'of FIG.
  • the hole 81 is connected to the channel 85.
  • Physiological saline is discharged through the hole 81 via the channel (85).
  • the channel 85 and the hole 81 through which the saline passes is shown inside the catheter body 84, and other structures are not shown.
  • FIG. 5 illustrates another example of an ablation catheter assembly having a plurality of electrodes disposed thereon according to the present disclosure.
  • the ablation catheter assembly 90 in which a plurality of electrodes is disposed includes a plurality of electrodes 91 and a catheter body 92 on a side surface thereof.
  • the plurality of electrodes 91 surround the catheter body 92 in an annular shape.
  • 5B is a cross section taken along DD '.
  • a portion of the electrode 91 surrounding the catheter body 92 is insulated and coated.
  • the insulation coated portion 93 does not transfer heat to the surroundings.
  • the electrode 91 removes the tissue by applying heat to the tissue in contact. At this time, when heat is generated in a part where tissue is not in contact, a thrombus may be generated. In order to prevent this, an insulating coating may be applied to a portion of the electrode 91 that does not contact the tissue, thereby preventing thrombus generation.
  • FIG. 6 is a diagram illustrating an example in which an ablation catheter assembly in which a plurality of electrodes is disposed according to the present disclosure is used.
  • a tip 101 of the ablation catheter assembly 100 having a plurality of electrodes is located at the inlet of the pulmonary artery 110.
  • a plurality of electrodes 102 contact the myocardial tissue 112 that needs to be removed in the atrial portion 111 at the entrance side of the pulmonary artery 110 by forming a plurality of curves. Heat is removed by applying heat to the myocardial tissue 112 that needs to be removed through the plurality of electrodes 102.
  • the impedance measuring device 103 of the plurality of electrodes 102 may selectively transmit current only to the electrode 102 in contact with the myocardial tissue 112 that needs to be removed. In FIG. 6, the impedance measuring device 103 and the RF generator 103 are shown together, but they may be configured separately.
  • FIG. 6B is an enlarged view of the dotted circle in FIG. 6A.
  • FIG. 7 is a diagram illustrating an example in which a distal end portion of an ablation catheter assembly having a plurality of electrodes according to the present disclosure has a plurality of curves.
  • the ablation catheter assembly 160 having a plurality of electrodes includes a catheter body 161 and a plurality of electrodes 120, 130, 140, and 150.
  • 7 (b) shows the wires 121, 131, 132, 141, 142, 151, and 152 inside the catheter body 161.
  • the wire 121 is connected to the electrode 120.
  • the wires 131 and 132 are connected to the electrode 130, the wires 141 and 142 are connected to the electrode 140, and the wires 151 and 152 are connected to the electrode 150, and two wires are symmetrically connected to each electrode. Is connected.
  • the method in which the electric wire is connected to the electrode is not described separately by known techniques.
  • FIG. 7C shows that the catheter body 160 is bent to the right when the wires 131, 141 and 151 are properly pulled.
  • FIG. 7 (d) shows that the distal end portion 170 of the distal end portion of the catheter body 160 is further bent by further pulling the wire 131 in the state of FIG. 7 (c).
  • FIG. 7 (e) shows that the distal end 170 of the distal end of the catheter body 160 is bent by pulling the wire 132 in the state of FIG. 7 (c).
  • the wire 120 preferably has sufficient elasticity so that the catheter body 160 can return to a straight line when the force applied to the wires 131, 132, 141, 142, 151, and 152 is removed. According to the shape of the curve to be made to the catheter body 160, the number and location of the wires can be variously arranged.
  • FIG. 8 is a view illustrating an example of an ablation catheter assembly to which a balloon is attached according to the present disclosure.
  • the ablation catheter assembly 230 to which the plurality of balloons is attached includes two balloons 232 and 233 and two balloons attached to the distal end along the longitudinal direction of the catheter body 231 and the catheter body 231.
  • At least one electrode 234 disposed on the surface of the balloon 233 at the rear end is included.
  • the electrode 234 may be in direct contact with the myocardial tissue to be removed and disposed on the outer surface of the balloon 233. Alternatively, it may be disposed on the inner surface of the balloon 233.
  • the electrode 234 is preferably in close contact with the inner surface of the balloon 233 in order to efficiently remove the myocardial tissue.
  • An adhesive may be used to bring the electrode 234 into close contact with the inner surface of the balloon 233.
  • the electrode 234 may be brought into close contact with the inner surface of the balloon 233 using the RF generator (not shown in FIG. 8) and the wire 235 connecting the electrode 234. That is, the wire 235 is bent inward to the inside of the balloon 233 in advance. The wire 235 is not bent in the state where the balloon 233 is not expanded. However, when the balloon 233 is inflated, the wire 235 naturally bends from the inside of the balloon 233 to the outside, and the electrode 234 remains in close contact with the inner surface of the balloon 233. 9, the balloon 233 is inflated with the electrode 234 in close contact with the inner surface of the balloon 233. That is, in FIG.
  • the wire 235 connected to the electrode 234 disposed on the inner surface of the balloon 233 has a straight shape in the state in which the balloon 233 is not expanded, but in FIG. 9 (b).
  • the electrode 234 is in close contact with the inner surface of the balloon 233 while naturally bent in the direction in which the wire 235 is bent in advance.
  • the electrode 234 is disposed on the inner surface of the balloon 233, it may be used to heat the liquid inside the balloon 233 as described in US Pat. No. 6,952,615.
  • the ablation catheter assembly 240 to which the plurality of balloons is attached includes two balloons 242 and 243 and two balloons attached to the distal end along the longitudinal direction of the catheter body 241 and the catheter body 241.
  • One or more electrodes 244, a temperature sensor 245, and a hole 246 disposed on the surface of the balloon 243 at the rear end are included.
  • Temperature control is important when removing the myocardial tissue that needs to be removed using electrode 244. If the temperature is lower than the temperature required for removal, sufficient removal cannot be achieved. In particular, when the temperature is high, unnecessary bubbles may be generated by heating blood, which may be a problem when the bubbles cannot be discharged from the body.
  • the temperature suitable for the work for removing the myocardial tissue using the electrode 244 is about 50 ⁇ 60 °C. It is desirable to place the temperature sensor 245 to maintain the proper temperature. In particular, it is desirable to place around electrode 244 for accurate temperature measurement. Therefore, it is preferable to arrange
  • the temperature sensor 245, a thermocouple, a thermistor, or the like known to those skilled in the art can be used.
  • the temperature around the electrode 244 measured by the temperature sensor 245 is high, the temperature may be controlled by adjusting the amount of current flowing into the electrode 244. Alternatively, the temperature may be controlled by sending a material that suppresses the temperature rise around the electrode 244.
  • the latter method is known to those skilled in the art to send physiological saline to suppress the temperature rise around the electrode 244.
  • the electrode 244 since the electrode 244 is disposed on the surface of the balloon 243, it is necessary to discharge the physiological saline through the surface of the balloon 243. To this end, the saline solution may be discharged through the hole 246 on the surface of the balloon 243 in which the electrode 244 is disposed.
  • FIG 11 is an example of a balloon shape used in the balloon ablation catheter assembly according to the present disclosure.
  • FIG. 11 separately illustrates only a portion of balloon 243 to show an example of a hole 246 in the surface of balloon 243 according to the present disclosure.
  • the balloon 243 injects gas or liquid into the balloon 243 for expansion after it is placed in a desired position.
  • the liquid inside the liquid used to inflate the balloon 243 does not leak out.
  • the balloon 243 preferably has a double film.
  • FIG. 11B is a cross-sectional view of the balloon 243 of FIG. 11A taken along line AA ′.
  • the saline solution is discharged through the holes 246 via the double membrane 247.
  • physiological saline for inflating the balloon 243 and physiological saline for controlling the temperature is preferably injected separately.
  • the physiological saline may be separated through the inner membrane 249, and the physiological saline inside the inner membrane 249 may not leak out.
  • the electrode 244 is arrange
  • the electrode 244 may be disposed on the inner surface of the outer layer 248 or the outer surface of the inner layer 249. If the electrode 244 is disposed on the outer surface of the outer membrane 248 may damage the blood vessel wall when the catheter is inserted, and when the electrode 244 is disposed on the inner surface of the inner membrane 249, the physiology of inflating the balloon 243 This is because the saline solution can be directly heated.
  • FIG. 12 is a view illustrating an example in which an balloon ablation catheter assembly according to the present disclosure is used.
  • the balloon 251 located at the tip of the two balloons of the balloon ablation catheter assembly 250 is attached to the pulmonary artery 260 inside the inlet of the pulmonary artery 260.
  • the balloon 251 is located inside the pulmonary artery 260 so that the balloon 252 located at the bottom of the pulmonary artery 260 is immobilized when the myocardial tissue 262 is removed when the pulmonary artery 260 needs to be removed.
  • the electrode 253 disposed in the balloon 252 located at the bottom is removed by applying heat to the myocardial tissue 262 that needs to be removed.
  • the balloon 251 located at the tip is located in the pulmonary artery 260 inside the entrance of the pulmonary artery 260, or when the balloon 252 located at the bottom removes the myocardial tissue, the balloons 251 and 252 have a peripheral atrium 261. It is preferable to expand according to the shape of the surroundings so as to be in close contact without applying excessive pressure to the wall of the pulmonary artery or the pulmonary artery 260.
  • the current may be selectively sent only to the electrode 253 in contact with the myocardial tissue 262 to be removed through the impedance measuring device 254 of the electrode 253.
  • the impedance measuring device 254 and the RF generator 254 are shown together, but they may be configured separately.
  • FIG. 12B is an enlarged view of the dotted circle in FIG. 12A.
  • FIG 13 is another example of the balloon shape used in the balloon ablation catheter assembly according to the present disclosure.
  • FIG. 13B shows the BB 'cross section of the balloon 270.
  • the balloon 270 includes one or more channels 281 penetrating along the longitudinal direction of the catheter body 271. This may interfere with the flow of blood when the balloon 270 is expanded, to prevent this. The larger the size of the channel 281 is, the better it is to facilitate blood flow.
  • the positions of the electrodes described in the drawings are arranged in a line at approximately the center of the balloon, but may be arranged at various positions as necessary.
  • some electrodes may be arranged at the tip of the balloon, at the center, and at the bottom of the balloon.
  • the shape of most balloons is shown to be close to a circle, the shape of a balloon may be elliptical as needed.
  • a catheter assembly comprising: a catheter body; A plurality of balloons attached to the distal end along the longitudinal direction of the catheter body; And an electrode having one or more wires connected to a surface of the balloon at the rear end of the catheter body, among the plurality of balloons.
  • a catheter assembly comprising an electrode impedance measuring device.
  • a catheter assembly comprising a temperature sensor capable of measuring the temperature around the electrode.
  • a catheter assembly wherein a balloon in which an electrode is disposed has a hole for discharging a substance for controlling the temperature rise around the electrode.
  • a catheter assembly characterized in that the plurality of balloons expand in accordance with the shape of the portion where the surface of the balloon contacts.
  • a catheter assembly wherein at least one of the plurality of balloons is a double film having an outer film and an inner film.
  • the catheter assembly characterized in that the outer surface of the outer membrane has a hole to discharge the saline solution.
  • a catheter assembly comprising an electrocardiogram measuring device attached to the tip of the catheter body.
  • a catheter assembly comprising: a catheter body; A plurality of electrodes disposed along the longitudinal direction of the catheter body; And a wire connected to each of the plurality of electrodes, wherein each of the wires is moved individually so that the tip portion of the catheter body has a plurality of curves.
  • a catheter assembly comprising a temperature sensor capable of measuring a temperature around an electrode.
  • a catheter assembly comprising an electrode impedance measuring device.
  • a catheter assembly characterized by having a hole for discharging a substance for controlling the temperature rise around the electrode.
  • a catheter assembly wherein the substance for controlling temperature rise is physiological saline.
  • a catheter assembly comprising an electrocardiogram measuring device attached to the tip of the catheter body.
  • a catheter assembly wherein only a portion of the electrode has an insulating coating.
  • a catheter assembly characterized in that at least one electrode is disposed on the side of the catheter body.
  • a catheter assembly characterized in that two wires are symmetrically connected to each of the one or more electrodes arranged on the side.
  • a catheter assembly characterized in that a plurality of electrodes are arranged in the same plane inside the catheter body.
  • the balloon-attached catheter assembly it is possible to remove several tissues at once, thereby reducing the procedure time and thereby providing convenience for the patient and the operator.
  • the entire balloon is not heated but only the electrode of the required portion can be heated, thereby preventing unnecessary portions from being removed.
  • the balloon ablation catheter assembly according to the present disclosure may be used in various therapeutic fields for removing tissue by applying heat in addition to arrhythmia treatment.
  • the balloon ablation catheter assembly may be used for treatment by simply applying heat to a necessary tissue in addition to ablation. .
  • the catheter assembly is arranged a plurality of electrodes according to the present disclosure.
  • wires connected to electrodes instead of pulley wires to create a plurality of curves at the tip of the catheter body, it is possible to increase the utilization of the space inside the catheter body.
  • the catheter assembly having a plurality of electrodes it is possible to remove several tissues at once, thereby reducing the procedure time and thereby facilitate the convenience of the patient and the operator.
  • the catheter assembly in which the plurality of electrodes according to the present disclosure is disposed only the electrode of the necessary portion can be heated instead of heating the entire balloon, thereby preventing unnecessary portions from being removed.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Veterinary Medicine (AREA)
  • Biomedical Technology (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Molecular Biology (AREA)
  • Physics & Mathematics (AREA)
  • Biophysics (AREA)
  • Medical Informatics (AREA)
  • Hematology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Anesthesiology (AREA)
  • Pathology (AREA)
  • Cardiology (AREA)
  • Pulmonology (AREA)
  • Plasma & Fusion (AREA)
  • Otolaryngology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Child & Adolescent Psychology (AREA)
  • Vascular Medicine (AREA)
  • Surgical Instruments (AREA)

Abstract

L'invention concerne un ensemble cathéter comprenant : un corps de cathéter ; une pluralité de ballonnets fixés à l'extrémité avant selon la direction longitudinale du corps de cathéter ; et une électrode, dont au moins un fil électrique est relié à la surface d'un ballonnet, parmi la pluralité de ballonnets, situé au niveau de la dernière extrémité du corps de cathéter. L'invention concerne également un ensemble cathéter comprenant : un corps de cathéter ; une pluralité d'électrodes disposées selon la direction longitudinale du corps de cathéter ; et des fils électriques respectivement reliés à la pluralité d'électrodes, les fils électriques respectifs se déplaçant individuellement de telle sorte que la partie extrémité avant du corps de cathéter possède une pluralité de courbes.
PCT/KR2015/004342 2014-04-29 2015-04-29 Ensemble cathéter Ceased WO2015167256A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR1020140051264A KR20150125035A (ko) 2014-04-29 2014-04-29 카테터 어셈블리
KR1020140051266A KR101672879B1 (ko) 2014-04-29 2014-04-29 카테터 어셈블리
KR10-2014-0051266 2014-04-29
KR10-2014-0051264 2014-04-29

Publications (1)

Publication Number Publication Date
WO2015167256A1 true WO2015167256A1 (fr) 2015-11-05

Family

ID=54358898

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2015/004342 Ceased WO2015167256A1 (fr) 2014-04-29 2015-04-29 Ensemble cathéter

Country Status (1)

Country Link
WO (1) WO2015167256A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112545643A (zh) * 2021-02-23 2021-03-26 上海安钛克医疗科技有限公司 电极、球囊导管及消融系统

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008501440A (ja) * 2004-06-07 2008-01-24 ボストン サイエンティフィック リミテッド 同時に使用する固定機能を有する切除カテーテル
US20120029511A1 (en) * 2010-07-30 2012-02-02 Scott Smith Cooled Conductive Balloon RF Catheter for Renal Nerve Ablation
US20130066315A1 (en) * 2011-09-14 2013-03-14 Raj Subramaniam Ablation device with ionically conductive balloon
JP2013523414A (ja) * 2010-04-14 2013-06-17 ボストン サイエンティフィック サイムド，インコーポレイテッド 螺旋形状をなす構成物を使用する腎動脈除神経装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008501440A (ja) * 2004-06-07 2008-01-24 ボストン サイエンティフィック リミテッド 同時に使用する固定機能を有する切除カテーテル
JP2013523414A (ja) * 2010-04-14 2013-06-17 ボストン サイエンティフィック サイムド，インコーポレイテッド 螺旋形状をなす構成物を使用する腎動脈除神経装置
US20120029511A1 (en) * 2010-07-30 2012-02-02 Scott Smith Cooled Conductive Balloon RF Catheter for Renal Nerve Ablation
US20130066315A1 (en) * 2011-09-14 2013-03-14 Raj Subramaniam Ablation device with ionically conductive balloon

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112545643A (zh) * 2021-02-23 2021-03-26 上海安钛克医疗科技有限公司 电极、球囊导管及消融系统
CN112545643B (zh) * 2021-02-23 2021-05-28 上海安钛克医疗科技有限公司 电极、球囊导管及消融系统

Similar Documents

Publication Publication Date Title
CN107205774B (zh) 热标测导管
US9427277B2 (en) Ablative treatment of the heart to improve patient outcomes following surgery
CN111467031B (zh) 分段球囊导管
US20180235692A1 (en) High resolution multi-function and conformal electronics device for diagnosis and treatment of cardiac arrhythmias
JPS6329665A (ja) 医学的目的のために体の開孔に挿入するアプリケ−タ−
WO2019027254A2 (fr) Cathéter pour détecter une forme et une force de contact à l'aide d'une fibre optique fbg et système de cathéter associé
WO2013172599A1 (fr) Dispositif combiné de cautérisation et de pose d'endoprothèse
US20140114304A1 (en) Ablation catheter system and method for deploying same
WO2010107182A2 (fr) Cathéter bipolaire pour rhytidectomie
WO2015167256A1 (fr) Ensemble cathéter
JP2025164844A (ja) 両面電極アレイ及び灌注用の可撓性遠位端アセンブリ
CN215349402U (zh) 消融装置和射频消融设备
JP2855556B2 (ja) 気管支誘導心電図の測定装置
WO2022050776A1 (fr) Pince à biopsie
KR20150125035A (ko) 카테터 어셈블리
WO2019190060A1 (fr) Cathéter de capture pour détecter un signal électrique myocardique
KR101672879B1 (ko) 카테터 어셈블리
WO2015147577A1 (fr) Cathéter à ballonnet d'ablation par radiofréquence intravasculaire
KR100721070B1 (ko) 외장튜브 및 그 내부에 삽입된 전극도자를 포함하는시술기구
WO2020040511A1 (fr) Cathéter à détection de signal électrique myocardique intégré à une anse
CN223529518U (zh) 一种消融导管组件
CN204671152U (zh) 心脏电学信息标测电极
CN117379167B (zh) Marshall 韧带射频消融电极、装置及其应用
CN114748157A (zh) 电极组件、消融装置和射频消融设备
CN114748151A (zh) 电极组件、消融装置和射频消融设备

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15785921

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15785921

Country of ref document: EP

Kind code of ref document: A1