WO2010113915A1 - ガイドワイヤ及びそれを備えるバルーン付きアブレーションカテーテルシステム - Google Patents
ガイドワイヤ及びそれを備えるバルーン付きアブレーションカテーテルシステム Download PDFInfo
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- WO2010113915A1 WO2010113915A1 PCT/JP2010/055633 JP2010055633W WO2010113915A1 WO 2010113915 A1 WO2010113915 A1 WO 2010113915A1 JP 2010055633 W JP2010055633 W JP 2010055633W WO 2010113915 A1 WO2010113915 A1 WO 2010113915A1
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- balloon
- guide wire
- bending
- ablation catheter
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- 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
- A61M25/09—Guide wires
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- 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
- A61B18/1492—Probes or electrodes therefor having a flexible, catheter-like structure, e.g. for heart ablation
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- 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
- 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
- A61B2017/22038—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 a guide wire
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- 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
- A61B2018/00053—Mechanical features of the instrument of device
- A61B2018/00214—Expandable means emitting energy, e.g. by elements carried thereon
-
- 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
- A61B2018/00053—Mechanical features of the instrument of device
- A61B2018/00214—Expandable means emitting energy, e.g. by elements carried thereon
- A61B2018/0022—Balloons
-
- 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
- A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
- A61B2018/00345—Vascular system
- A61B2018/00351—Heart
- A61B2018/00357—Endocardium
Definitions
- the present invention relates to a guide wire and an ablation catheter with a balloon including the guide wire.
- An ablation catheter with a balloon is a medical device used for the treatment of cardiac arrhythmias such as paroxysmal supraventricular tachycardia, atrial tachycardia, atrial flutter, and paroxysmal ventricular tachycardia.
- pulmonary vein ablation introduces a balloon attached to the distal end of the catheter into the inferior vena cava, through the right atrium of the heart and into the atrium. This is performed by reaching the left atrium via a gap and expanding the balloon, and then heating the balloon surface with high-frequency power and heating the annular peripheral edge of the pulmonary vein opening (Patent Documents 1 and 2).
- a guide wire may be used to guide the balloon to the pulmonary vein opening or to bring the balloon into close contact with the pulmonary vein opening.
- the guide wire has a linear main body portion and a flexible tip portion, and the tip portion is further devised such as being processed into a J shape in order to prevent damage to the vascular tissue.
- JP 2002-78809 A Japanese Patent No. 4062935
- an ablation catheter with a balloon has a feature that a tissue area that can be cauterized by one cauterization is large.
- FIG. It was almost impossible to use for heart wall ablation because it could not be closely attached.
- an object of the present invention is to achieve efficient ablation of the heart wall using an ablation catheter with a balloon.
- a guide wire having a bending portion wherein the bending portion has a bending region having a bending rigidity of 570 to 3740 N ⁇ mm 2 in a region having a length of at least 20 mm in the longitudinal direction of the guide wire,
- the tangent at the starting point of the curved region intersects with the tangent at the end of the curved region, and the guide wire bending angle formed from the tangent at the starting point of the curved region toward the bending direction is 45 to 180 degrees.
- the balloon of the ablation catheter with a balloon can be brought into close contact with the heart wall, and efficient ablation of the heart wall can be realized.
- the heart wall can be cauterized by an ablation catheter with a balloon, and a wide range of tissue can be cauterized by a single cauterization, which occurs in the treatment of cardiac arrhythmia using an ablation catheter having a metal tip at the tip. This eliminates the defective formation of the shochu line.
- a guide wire for an ablation catheter with a balloon according to the present invention is a guide wire having a bending portion, and the bending portion has a bending rigidity of 570 to 3740 N ⁇ in a region having a length of at least 20 mm in the longitudinal direction of the guide wire.
- the guide wire bending angle formed toward the tangent at the starting point of the time the curved area to the bending direction and the tangential line of the end point of the tangent and the curved area of the start point of the curved region is intersected Is 45 to 180 degrees, and when the guide wire is inserted into the lumen communicating from the distal end to the proximal end in the longitudinal direction of the ablation catheter shaft with a balloon, and the curved region is positioned immediately below the balloon,
- the balloon bending angle in the longitudinal direction of the balloon is 30 to 90 degrees.
- FIG. 1 is a schematic view showing a guide wire 1 for an ablation catheter with a balloon according to the first embodiment of the present invention.
- FIG. 2A is a schematic view showing a state in which the balloon is pressed against the heart wall at a shallow angle in the balloon ablation catheter system including the guide wire for the balloon ablation catheter according to the first embodiment of the present invention.
- FIG. 2B is a schematic view showing a state in which the balloon is pressed against the heart wall at a deep angle in the ablation catheter system with a balloon including the guide wire for the ablation catheter with a balloon according to the first embodiment of the present invention.
- “Bending rigidity” is the product of the Young's modulus E of the guide wire material and the moment of inertia I of the cross section, and is calculated by the following formula 1. It is preferably 570 to 3740 N ⁇ mm 2. .
- the Young's modulus E can be approximated by Equation 2 below.
- the material of the guide wire 1 includes, for example, a metal or alloy such as stainless steel.
- the length of the guide wire 1 is preferably 0.5 to 2.5 m from the viewpoint of practicality.
- the length of the curved region is preferably 20 to 25 mm from the viewpoint of adapting to the general diameter 20 to 40 mm of the balloon 6.
- Guide wire bending angle refers to an angle formed by the tangent line at the starting point of the bending region and the tangent line at the end point of the bending region intersect to form a bending direction from the tangent line at the starting point of the bending region. In FIG. 1, it is shown as a guide wire bending angle 3.
- the starting point of the curved area refers to a certain point in the curved portion of the guide wire.
- 4 is selected as the starting point of the curved area.
- the tangent of the starting point of the curved region is shown as, for example, the tangent 30 of the starting point 4 of the curved region in FIG.
- the end point of the curved region refers to any one point in the curved portion of the guide wire that is arbitrarily selected so that the curved region has a length of at least 20 mm with respect to the starting point of the curved region.
- 5 is selected as the end point of the curved region.
- the tangent of the end point of the curved region is shown as, for example, the tangent 31 of the end point 5 of the curved region in FIG.
- the “curved region” refers to a specific region of the guide wire sandwiched between the starting point of the curved region and the end point of the arbitrary curved region in the curved portion of the guide wire. For example, in FIG. Indicated.
- the guidewire for the ablation catheter with balloon of the present invention has a shape having at least 20 mm in length and having one or more bending regions in the bending portion of the guidewire having a bending rigidity of 570 to 3740 N ⁇ mm 2 If so, everything is included.
- “Balloon curve angle” refers to the angle formed by the tangent line of the catheter shaft and the tangent line of the guide wire at the catheter tip.
- the tangent line of the catheter shaft 7 and the guide at the catheter tip 23 The angle formed by the tangent of the wire 1 is shown as a balloon bending angle 21.
- the balloon bending angle 21 is preferably 30 to 90 degrees and more preferably 90 degrees from the viewpoint of bringing the balloon 6 into close contact with the heart wall 8.
- the distal end of the guide wire 1 is preferably flexible considering the possibility of tissue damage when it contacts the myocardial tissue, and more preferably J-shaped as shown in FIG.
- the guide wire for the ablation catheter with balloon of the present invention is preferably used for ablation of the heart wall from the viewpoint of allowing the balloon of the ablation catheter with balloon to be in close contact with the heart wall.
- the ablation catheter system with a balloon of the present invention is characterized by including a guide wire for the ablation catheter with a balloon of the present invention.
- FIG. 3 is a schematic view showing an embodiment of an ablation catheter system with a balloon including a guide wire for an ablation catheter with a balloon according to the first embodiment of the present invention.
- the ablation catheter system with a balloon shown in FIG. 3 includes a balloon 6 that can be expanded and contracted on the distal end side of the ablation catheter 10 with a balloon, and a double tube in which an inner tube body 12 is inserted into the lumen of an outer tube body 11.
- a cylindrical catheter shaft 7 is provided.
- the distal end portion of the balloon 6 is fixed to the distal end portion in the longitudinal direction of the inner tube body 12, and the rear end portion of the balloon 6 is fixed to the distal end portion in the longitudinal direction of the outer tube body 11.
- the length of the outer tube body 11 and the inner tube body 12 is preferably 0.5 to 2 m, more preferably 0.8 to 1.2 m.
- the material of the outer tube body 11 and the inner tube body 12 is preferably a flexible material excellent in antithrombogenicity, and examples thereof include a fluororesin, a polyamide resin, a polyurethane resin, and a polyimide resin.
- the bending rigidity of the catheter (for example, the inner tube body 11) having a lumen through which the guide wire 1 is inserted is higher than the bending rigidity of the guide wire 1.
- the shape of the balloon 6 may be any shape that can fit into the pulmonary vein opening, and examples thereof include a spherical shape having a diameter of 20 to 40 mm or a conical shape with a conical tip.
- the film thickness of the balloon 6 is preferably 20 to 200 ⁇ m, more preferably 30 to 100 ⁇ m.
- the material of the balloon 6 is preferably a stretchable material with excellent antithrombotic properties, and more preferably a polyurethane polymer material.
- polyurethane-based polymer material examples include thermoplastic polyether urethane, polyether polyurethane urea, fluorine polyether urethane urea, polyether polyurethane urea resin, and polyether polyurethane urea amide.
- the high-frequency energizing electrode 13 is disposed inside the balloon 6.
- the high-frequency energizing electrode 13 When the high-frequency energizing electrode 13 is fixed to the inner tube body 12, examples of the fixing method include caulking, adhesive, welding, or heat shrinkable tube.
- the high-frequency energizing electrode 13 is fixed to the inner tube body 12. It doesn't have to be.
- the high frequency power is supplied by the high frequency generator 15 between the high frequency energizing electrode 13 and the balloon outer electrode 14 affixed to the patient's body surface to heat the balloon.
- a plurality of high-frequency energization electrodes 13 may be arranged inside the balloon 6. Further, from the viewpoint of improving the flexibility of the balloon in the range where the high frequency energizing electrode 13 is disposed, the high frequency energizing electrode 13 may be divided into a plurality of portions.
- the shape of the high-frequency energizing electrode 13 is not particularly limited, but a cylindrical shape such as a coil shape or a cylindrical shape is preferable.
- the diameter of the coil-shaped high frequency energizing electrode 13 is preferably 0.1 to 1 mm, and more preferably 0.2 to 0.5 mm.
- a high conductivity metal is preferable.
- high conductivity metal examples include high conductivity metals such as silver, gold, platinum, and copper.
- the high-frequency power supply lead wire connected to the high-frequency energizing electrode 13 is connected to the high-frequency generator 15 via the electrode connector 16 and transmits a high-frequency current to the high-frequency energizing electrode 13.
- the high frequency power supply lead wire is connected to the high frequency energizing electrode 5 by soldering or caulking.
- the diameter of the lead wire for supplying high-frequency power is preferably 0.1 to 1 mm, more preferably 0.2 to 0.5 mm, from the viewpoint of practicality.
- Examples of the material of the lead wire for high-frequency power supply include high conductivity metals such as copper, silver, gold, platinum, tungsten, and alloys. From the viewpoint of preventing short circuit, electrically insulating protection such as fluororesin In order to eliminate the need for connection by soldering or caulking, a part of the lead wire for high-frequency power supply with the electrically insulating protective coating stripped is formed into a coil shape and applied with high-frequency energization. The electrode 13 is more preferable.
- the temperature sensor 17 is fixed to any one of the inner tube body 12, the high-frequency energizing electrode 13, or the inner surface of the balloon 6.
- a plurality of temperature sensors 17 may be fixed from the viewpoint of backup at the time of failure of the temperature sensor.
- the temperature sensor 17 includes, for example, a thermocouple or a resistance temperature detector.
- the temperature sensor lead wire connected to the temperature sensor 17 is connected to the high frequency generator 15 via the electrode connector 16, and transmits a temperature signal measured by the temperature sensor 17 to the high frequency generator 15.
- the material of the lead wire for the temperature sensor is preferably the same material as the thermocouple.
- the temperature sensor 17 is a resistance temperature detector, a high conductivity metal such as copper, silver, gold, platinum, tungsten, or an alloy is preferable.
- the temperature sensor lead wire is preferably provided with an electrically insulating protective coating such as a fluororesin from the viewpoint of preventing a short circuit.
- the ablation catheter 10 with a balloon shown in FIG. 3 includes a tube connecting portion 19 having a through hole to which a balloon expansion / contraction tube 18 for supplying a liquid to the inside of the balloon 6 is mounted.
- the pipe connecting portion 19 communicates with the space between the outer tube body 11 and the inner tube body 12.
- the pipe connecting portion 19 is preferably provided on a connecting member disposed on the rear end side in the longitudinal direction of the outer tube body, the plug body, the lid body or the outer tube body, but the ablation with balloon shown in FIG.
- the tube connecting portion 19 of the catheter 10 is provided on the connecting member 20.
- the high-frequency energization lead wire and the temperature sensor lead wire are inserted through the space between the outer tube body 11 and the inner tube body 12 from the high-frequency energization electrode 13 and the temperature sensor 17 so as to be exposed to the outside from the connecting member 20. It is preferable to arrange
- the guide wire 1 for the ablation catheter with balloon is inserted through the lumen of the inner tube body 12.
- Example 1 An ablation catheter system with a balloon according to the first embodiment of the present invention was manufactured as follows.
- the cross-sectional shape is a circle with a diameter of 0.5 mm, a stainless steel wire (SUS304WPB wire) having a length of 2000 mm is used as a guide wire, and a position 1950 mm in length from one end thereof is used as a starting point 4 of the bending region so that the entire bending portion is long.
- the curved region 2 was formed so as to be a curved region having a thickness of 20 mm (hereinafter referred to as Example 1 guide wire).
- Example 1 The bending rigidity of the guide wire is 570 N ⁇ mm 2 when the Young's modulus E is 186 ⁇ 10 3 N / mm 2 and the secondary moment of inertia I is ⁇ ⁇ (0.25) 4/4 .
- an ablation catheter with a balloon according to the first embodiment of the present invention was manufactured as follows.
- a glass balloon mold having a mold surface corresponding to a desired balloon shape is immersed in a 13% concentration polyurethane solution, and the solvent is evaporated by applying heat to form a urethane polymer film on the mold surface.
- a balloon 6 having a diameter of 30 mm and a thickness of 50 ⁇ m was manufactured.
- the connecting member 20 provided with the pipe connecting portion 19 was inserted into the rear end of the outer tube body 11 which is a polyurethane tube having an outer diameter of 4 mm, an inner diameter of 3 mm, and an overall length of 1000 mm, and was fixed by adhesion.
- High frequency power which is an annealed copper wire with a diameter of 0.5 mm, starting from a position 20 mm from the tip of the inner tube body 12, which is a polyurethane tube having an outer diameter of 1.7 mm, an inner diameter of 1.2 mm, and an overall length of 1100 mm
- a part of the electrically insulating protective coating applied to the supply lead wire was peeled off and then directly wound around the inner tube body 12 to form a coil having a length of 10 mm.
- One of the temperature sensor lead wires is an ultra-thin thermocouple copper wire with an electrically insulating protective coating as one temperature sensor lead wire, and the other ultra-thin thermocouple constantan wire with an electrically insulating protective coating is the other temperature sensor lead wire.
- the tips were connected and reinforced with solder, and the connection portion was used as the temperature sensor 17.
- the temperature sensor 17 was fixed by caulking at a position 3 mm from the tip of the high-frequency energizing electrode 13.
- the inner tube body 12 to which the high frequency energizing electrode 13 and the temperature sensor 17 were fixed was inserted into the outer tube body 11 from the rear end side of the connecting member 20 and fixed to the connecting member 20 with a lid.
- the high-frequency energization lead wire and the temperature sensor lead wire are inserted from the high-frequency energization electrode 13 and the temperature sensor 17 through the space between the outer tube body 11 and the inner tube body 12 and taken out from the connecting member 20 to the outside.
- the electrode connector 16 was connected.
- the distal end portion of the balloon 6 is fixed to the outer periphery of the inner tube body 12 by thermal welding at a position 10 mm from the distal end of the inner tube body 12, and the rear end portion of the balloon 6 is thermally welded to the outer periphery of the distal end portion of the outer tube body 11.
- Example 1 catheter system One guide wire was inserted to complete the ablation catheter system with balloon according to the first embodiment of the present invention (hereinafter referred to as Example 1 catheter system).
- Example 2 An ablation catheter system with a balloon according to the second embodiment of the present invention was manufactured as follows.
- the cross-sectional shape is a circle with a diameter of 0.8 mm, and a stainless steel wire (SUS304WPB wire) having a length of 2000 mm is used as a guide wire, and a position 1950 mm in length from one end thereof is used as a starting point 4 of the bending region, so that the entire bending portion is long.
- the curved region 2 was formed so as to be a curved region having a thickness of 20 mm (hereinafter referred to as Example 2 guide wire).
- Example 2 The bending rigidity of the guide wire is 3740 N ⁇ mm 2 when the Young's modulus E is 186 ⁇ 10 3 N / mm 2 and the second moment of section I is ⁇ ⁇ (0.4) 4/4 .
- Example 2 catheter system A guide wire was inserted to complete the ablation catheter system with balloon according to the second embodiment of the present invention (hereinafter referred to as Example 2 catheter system).
- Comparative Example 1 As Comparative Example 1, an ablation catheter system with a balloon was manufactured as follows.
- the cross-sectional shape is a circle with a diameter of 0.4 mm, a stainless steel wire (SUS304WPB wire) having a length of 2000 mm is used as a guide wire, and the position of 1950 mm in length from one end thereof is used as a starting point of the bending region.
- a curved region was formed so as to be a curved region of 20 mm (hereinafter referred to as Comparative Example 1 guide wire).
- Comparative Example 1 The bending rigidity of the guide wire is 230 N ⁇ mm 2 when the Young's modulus E is 186 ⁇ 10 3 N / mm 2 and the cross-sectional secondary moment I is ⁇ ⁇ (0.25) 4/4 .
- Comparative Example 1 catheter system After supplying physiological saline to the balloon 6 of the same ablation catheter with balloon as prepared in Example 1 to expand the maximum diameter to 20 mm, the lumen of the inner tube body is compared with the comparative example.
- One guide wire was inserted to complete an ablation catheter system with a balloon (hereinafter referred to as Comparative Example 1 catheter system).
- Comparative Example 2 As Comparative Example 2, an ablation catheter system with a balloon was manufactured as follows.
- the cross-sectional shape is a circle with a diameter of 0.84 mm, a stainless steel wire (SUS304WPB) having a length of 2000 mm is used as a guide wire, and a position 1950 mm in length from one end thereof is used as a starting point of the bending region, and the entire bending portion is 20 mm in length.
- the curved region was formed so as to be a curved region (hereinafter referred to as Comparative Example 2 guide wire).
- Comparative Example 2 catheter system An ablation catheter system with a balloon (hereinafter referred to as Comparative Example 2 catheter system) was completed by inserting a guide wire.
- Comparative Example 3 As Comparative Example 3, an ablation catheter system with a balloon was manufactured as follows.
- the cross-sectional shape is a circle having a diameter of 1.0 mm, and a stainless steel wire (SUS304WPB) having a length of 2000 mm is used as a guide wire body, and a position 1950 mm in length from one end thereof is used as a starting point 4 of the bending region, so that the entire bending portion is long.
- the curved region 2 was formed so as to be a curved region having a thickness of 20 mm (hereinafter referred to as Comparative Example 3 guide wire).
- Comparative Example 3 catheter system Three guide wires were inserted to complete an ablation catheter system with a balloon (hereinafter referred to as Comparative Example 3 catheter system).
- Example 1 (Verification of ablation catheter system with balloon)
- Example 2 catheter system Comparative example 1 catheter system, Comparative example 2 catheter system, and Comparative example 3 catheter system
- the guide wire curve angle required for the balloon curve angle to be 30 to 90 degrees is set. Verified. The results are shown in Table 1.
- the bending angle of the guide wire needs to be 180 degrees or more, and if it exceeds 180 degrees, the operability of the guide wire at the time of catheter insertion is deteriorated, which is not preferable. Further, even when the angle was about 360 degrees, the balloon bending angle was not 90 degrees, and it was determined that the balloon was not applicable.
- the balloon bending angle is 90 degrees.
- the comparative example 2 guide wire is inserted into the lumen of the inner tube body 12 of the ablation catheter with a balloon. It was judged that it was not applicable because of resistance.
- the optimum bending rigidity of the guide wire for the balloon ablation catheter system of the present invention is 570 to 3740 N ⁇ mm 2 and the guide wire bending angle is 45 to 180 degrees.
- the balloon of the ablation catheter with a balloon is bent at an angle applicable to the ablation of the heart wall by the bending region at the distal end side in the longitudinal direction of the guide wire for the balloon ablation catheter. It has become clear that a conventional ablation catheter with a balloon can be provided with a balloon ablation catheter system applicable to heart wall ablation.
- the present invention can be used as an ablation catheter system with a balloon for cauterizing a heart wall.
- SYMBOLS 1 Guide wire for ablation catheter with balloon, 2 ... Curve region, 3 ... Guide wire bending angle, 4 ... Start point of curve region, 5 ... End point of curve region, 6. -Balloon, 7 ... Double tube catheter shaft, 8 ... Heart wall, 10 ... Ablation catheter with balloon, 11 ... Outer tube body, 12 ... Inner tube body, 13 ... High frequency energizing electrode, 14 ... balloon outer electrode, 15 ... high frequency generator, 16 ... electrode connector, 17 ... temperature sensor, 18 ... balloon expansion / contraction tube, 19 ... tube Connection part, 20 ... connecting member, 21 ... balloon bending angle, 22 ... balloon junction, 23 ... catheter tip, 30 ... tangent at the start of the bending area, 31 ... bending area End of Tangent at
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Abstract
Description
(1) 湾曲部を有するガイドワイヤであって、上記湾曲部は、上記ガイドワイヤの長手方向における少なくとも20mmの長さの領域に曲げ剛性が570~3740N・mm2の湾曲領域を有し、上記湾曲領域の始点における接線と上記湾曲領域の終点における接線とが交差して上記湾曲領域の始点における接線から湾曲方向へ向けて形成されるガイドワイヤ湾曲角が45~180度であり、バルーン付きアブレーションカテーテル用シャフトの長手方向における遠位端から近位端まで連通するルーメンに上記ガイドワイヤが挿入されて上記湾曲領域がバルーンの直下に位置したときに、バルーンの上記長手方向におけるバルーン湾曲角が30~90度となる、バルーン付きアブレーションカテーテル用のガイドワイヤ。
(2) 心臓壁の焼灼に使用する、上記(1)のガイドワイヤ。
(3) 上記(1)又は(2)のガイドワイヤを備える、バルーン付きアブレーションカテーテルシステム。
(4) 上記(3)のバルーン付きアブレーションカテーテルシステムを用いた、心臓不整脈の治療方法。
本発明の第一実施形態に係るバルーン付きアブレーションカテーテルシステムを以下の通り製作した。
本発明の第二実施形態に係るバルーン付きアブレーションカテーテルシステムを以下の通り製作した。
比較例1として、バルーン付きアブレーションカテーテルシステムを以下の通り製作した。
比較例2として、バルーン付きアブレーションカテーテルシステムを以下の通り製作した。
比較例3として、バルーン付きアブレーションカテーテルシステムを以下の通り製作した。
実施例1カテーテルシステム、実施例2カテーテルシステム、比較例1カテーテルシステム、比較例2カテーテルシステム、比較例3カテーテルシステムにおいて、バルーン湾曲角が30~90度となるために必要なガイドワイヤ湾曲角を検証した。結果を表1に示す。
Claims (4)
- 湾曲部を有するガイドワイヤであって、
前記湾曲部は、前記ガイドワイヤの長手方向における少なくとも20mmの長さの領域に曲げ剛性が570~3740N・mm2の湾曲領域を有し、
前記湾曲領域の始点における接線と前記湾曲領域の終点における接線とが交差して前記湾曲領域の始点における接線から湾曲方向へ向けて形成されるガイドワイヤ湾曲角が45~180度であり、
バルーン付きアブレーションカテーテル用シャフトの長手方向における遠位端から近位端まで連通するルーメンに前記ガイドワイヤが挿入されて前記湾曲領域がバルーンの直下に位置したときに、バルーンの前記長手方向におけるバルーン湾曲角が30~90度となる、
バルーン付きアブレーションカテーテル用のガイドワイヤ。 - 心臓壁の焼灼に使用する、請求項1記載のガイドワイヤ。
- 請求項1又は2記載のガイドワイヤを備える、バルーン付きアブレーションカテーテルシステム。
- 請求項3記載のバルーン付きアブレーションカテーテルシステムを用いた、心臓不整脈の治療方法。
Priority Applications (8)
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RU2011143738/14A RU2011143738A (ru) | 2009-03-31 | 2010-03-30 | Проводник и содержащая баллон аблационная катетерная система с таким проводником |
EP10758686A EP2415496A4 (en) | 2009-03-31 | 2010-03-30 | GUIDE WIRE AND BALLOON DAMAGE CATHETER SYSTEM THEREWITH |
AU2010231682A AU2010231682A1 (en) | 2009-03-31 | 2010-03-30 | Guide wire and balloon-equipped ablation catheter system with same |
BRPI1013682A BRPI1013682A2 (pt) | 2009-03-31 | 2010-03-30 | fio-guia para um cateter de ablação com um balão tendo uma porção curva, sistema de cateter de ablação com um balão, e, método de tratamento de uma arritmia cardíaca |
US13/260,809 US20120046647A1 (en) | 2009-03-31 | 2010-03-30 | Guidewire and ablation catheter system with balloon having the same |
CN2010800153276A CN102369038A (zh) | 2009-03-31 | 2010-03-30 | 导丝以及具备其的带球囊消融导管系统 |
CA2757198A CA2757198A1 (en) | 2009-03-31 | 2010-03-30 | Guidewire and ablation catheter system with balloon having the same |
JP2010513215A JPWO2010113915A1 (ja) | 2009-03-31 | 2010-03-30 | ガイドワイヤ及びそれを備えるバルーン付きアブレーションカテーテルシステム |
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JP2009-087189 | 2009-03-31 | ||
JP2009087189 | 2009-03-31 |
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US (1) | US20120046647A1 (ja) |
EP (1) | EP2415496A4 (ja) |
JP (1) | JPWO2010113915A1 (ja) |
KR (1) | KR20110120921A (ja) |
CN (1) | CN102369038A (ja) |
AU (1) | AU2010231682A1 (ja) |
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CN105854155A (zh) * | 2016-03-22 | 2016-08-17 | 福建省立医院 | 一种球囊导管 |
US10413709B2 (en) * | 2016-07-14 | 2019-09-17 | Medtronic Vascular, Inc. | High-pressure dilatation catheter balloon |
CN106422038A (zh) * | 2016-09-28 | 2017-02-22 | 上海凯利泰医疗科技股份有限公司 | 一种椎体扩张球囊导管 |
CN111839618B (zh) * | 2019-04-30 | 2024-02-27 | 上海科赐医疗技术有限公司 | 具有自然腔道显示装置的医用非对称球囊导管 |
KR20220159941A (ko) * | 2020-03-31 | 2022-12-05 | 도레이 카부시키가이샤 | 만곡 검출 기능이 있는 베이스 부재, 만곡 검출 시스템, 만곡 검출 기능이 있는 베이스 부재를 구비한 기기 및 벌룬 카테터 |
WO2023226194A1 (zh) * | 2022-05-25 | 2023-11-30 | 乐普(北京)医疗器械股份有限公司 | 射频消融设备 |
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- 2010-03-30 US US13/260,809 patent/US20120046647A1/en not_active Abandoned
- 2010-03-30 BR BRPI1013682A patent/BRPI1013682A2/pt not_active IP Right Cessation
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- 2010-03-30 JP JP2010513215A patent/JPWO2010113915A1/ja not_active Withdrawn
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CA2757198A1 (en) | 2010-10-07 |
TW201039875A (en) | 2010-11-16 |
BRPI1013682A2 (pt) | 2016-04-26 |
CN102369038A (zh) | 2012-03-07 |
KR20110120921A (ko) | 2011-11-04 |
RU2011143738A (ru) | 2013-05-10 |
US20120046647A1 (en) | 2012-02-23 |
EP2415496A4 (en) | 2012-11-07 |
JPWO2010113915A1 (ja) | 2012-10-11 |
EP2415496A1 (en) | 2012-02-08 |
AU2010231682A1 (en) | 2011-11-03 |
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