Thermally adjustable surgical tool system
First Claim
Patent Images
1. A thermally adjustable surgical tool system comprising:
- an electrical conductor;
a ferromagnetic coating covering at least a portion of the electrical conductor, the ferromagnetic coating being sufficiently thin so as to not fracture when heated in air and then immersed in liquid while heated; and
a power supply disposed in communication with the electrical conductor configured to produce oscillating electrical energy to be delivered to the electrical conductor;
a sensor configured to conduct a measurement along or adjacent the electrical conductor; and
wherein the power supply is configured to adjust the oscillating electrical energy in response to the measurement.
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0 Petitions
Accused Products
Abstract
A power source delivers oscillating electrical energy to an electrical conductor, such as a wire or catheter, which is coated circumferentially with a ferromagnetic material in a selected region. With high frequency electrical energy, the ferromagnetic material has a quick response in heating and cooling adjustable by the controllable power delivery. The ferromagnetic material can be used for separating tissue, coagulation, tissue destruction or achieving other desired tissue effects in numerous surgical procedures.
326 Citations
70 Claims
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1. A thermally adjustable surgical tool system comprising:
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an electrical conductor; a ferromagnetic coating covering at least a portion of the electrical conductor, the ferromagnetic coating being sufficiently thin so as to not fracture when heated in air and then immersed in liquid while heated; and a power supply disposed in communication with the electrical conductor configured to produce oscillating electrical energy to be delivered to the electrical conductor; a sensor configured to conduct a measurement along or adjacent the electrical conductor; and wherein the power supply is configured to adjust the oscillating electrical energy in response to the measurement. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A thermally adjustable surgical tool system comprising:
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an electrical conductor having a first portion and a second portion; a ferromagnetic coating covering at least a portion of the electrical conductor between the first portion and the second portion; and a generator configured to deliver a waveform to the electrical conductor and thereby heat the ferromagnetic coating, the ferromagnetic coating being sufficiently thin that, when heated, the ferromagnetic coating will not fracture when transitioning between contact with air and contact with liquid. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A thermally adjustable surgical tool system comprising:
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an electrical conductor; a ferromagnetic coating covering at least a portion of the electrical conductor; a handle configured to direct the electrical conductor; and a generator configured to deliver power to the electrical conductor to thereby heat the ferromagnetic coating; and wherein the ferromagnetic coating is sufficiently thin so as to not fracture when heated in air and then immersed in liquid. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49)
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50. A thermally adjustable surgical tool system comprising:
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a plurality of electrical conductors; a plurality of ferromagnetic coatings, each covering at least a portion of one of the plurality of electrical conductors at least one of the plurality of ferromagnetic coatings being sufficiently thin that the at least one of the plurality of ferromagnetic coatings will not fracture when heated and exposed to a temperature differential sufficiently large to cause a ferrite bead to fracture; and a generator system configured to deliver power to the plurality of electrical conductors. - View Dependent Claims (51, 52, 53, 54, 55, 56, 57)
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58. A thermally adjustable surgical tool system comprising:
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an electrical conductor; a ferromagnetic coating covering at least a portion of the electrical conductor, the ferromagnetic coating, when heated, being movable between air and liquid without causing fracturing of the ferromagnetic coating; a power source disposed in communication with the electrical conductor and configured to impedance match the ferromagnetic coating and further configured to deliver oscillating electrical energy to the electrical conductor; and a user adjustable control in communication with the power source and configured to select the amount of power delivered to the electrical conductor. - View Dependent Claims (59, 60, 61, 62, 63, 64, 65, 66)
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67. A thermally adjustable surgical system comprising:
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a surgical tip having a load comprising; a small diameter electrical conductor having a proximal and distal end, wherein the proximal end is configured for connection to an electrical circuit providing radiofrequency energy; a thin plating of ferromagnetic material disposed circumferentially about the electrical conductor, wherein the thin plating of ferromagnetic material is configured with a Curie point sufficiently high to encompass a desired set of therapeutic temperature ranges; and a controllable power source configured to deliver radiofrequency energy to the electrical conductor and further configured to impedance match the load, wherein the thin plating of ferromagnetic material, when heated, is movable between a first environment and a second environment without causing the thin plating of ferromagnetic material to fracture even when the first environment and the second environment have a large temperature differential. - View Dependent Claims (68, 69, 70)
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Specification