Electrical cautery device
First Claim
1. An apparatus for delivering thermal energy to tissue, the apparatus comprising:
- an electrically powered thermal delivery element configured to be flexible and having a substantially planar resistive coil embedded in a thermally conductive material, wherein the electrically powered thermal delivery element has a tissue contact surface and an opposed non-tissue contact surface, said tissue contact surface operable to directly heat a surface of tissue being contacted by thermal transfer from said substantially planar resistive coil embedded in said thermally conductive material, said thermal delivery element having a maximum watt density of about 5 to about 70 Watts per square inch sufficient to heat said tissue contact surface to a set predetermined temperature, anda power generating means connected to said resistive coil of said thermal delivery element generating an electrical current through said thermal delivery element during a thermal application interval having sufficient energy to heat the tissue contact surface of said thermal delivery element to said set predetermined temperature to cauterize said tissue during said application interval;
wherein the electrically powered thermal delivery element is configured to be flexible by including at least one slit to allow a first portion of the electrically powered thermal delivery element to fold relative to a second portion of the electrically powered thermal delivery element.
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Accused Products
Abstract
An electrical surgical cautery device for delivering thermal energy to cauterize and provide hemostasis to a bleeding tissue comprises an electrically powered flexible thermal delivery element having a substantially planar resistive coil embedded in a thermally conductive material. The thermally conductive material comprises a tissue contact surface and a non-tissue contact surface. A power source is connected to the resistive coil of the thermal delivery element and provides an electrical current to heat the thermal delivery element being pressed against the tissue. A method for providing hemostasis to a bleeding tissue surface comprises providing and pressing an electrical cautery device having a thermal delivery element, against the hemorrhaging tissue at a predetermined temperature for an interval sufficient to cauterize the tissue and provide hemostasis.
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Citations
18 Claims
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1. An apparatus for delivering thermal energy to tissue, the apparatus comprising:
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an electrically powered thermal delivery element configured to be flexible and having a substantially planar resistive coil embedded in a thermally conductive material, wherein the electrically powered thermal delivery element has a tissue contact surface and an opposed non-tissue contact surface, said tissue contact surface operable to directly heat a surface of tissue being contacted by thermal transfer from said substantially planar resistive coil embedded in said thermally conductive material, said thermal delivery element having a maximum watt density of about 5 to about 70 Watts per square inch sufficient to heat said tissue contact surface to a set predetermined temperature, and a power generating means connected to said resistive coil of said thermal delivery element generating an electrical current through said thermal delivery element during a thermal application interval having sufficient energy to heat the tissue contact surface of said thermal delivery element to said set predetermined temperature to cauterize said tissue during said application interval; wherein the electrically powered thermal delivery element is configured to be flexible by including at least one slit to allow a first portion of the electrically powered thermal delivery element to fold relative to a second portion of the electrically powered thermal delivery element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A surgical cauterizing device comprising:
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a power generating means providing a source of current or voltage; an applicator instrument having a first end and a second end, wherein said first end is in electrical communication with said power source; an electrical lead disposed within said applicator instrument; a deformable bio-inert heating element operably connected with said second end of said applicator instrument, said heating element having an electrically resistive planar foil encapsulated within a thermally conductive encapsulation material to generate heat to cauterize tissue; a thermocouple connected to the deformable bio-inert heating element configured to send a signal based on a temperature of the deformable bio-inert heating element to assist in controlling the power generating means; and an instrument defining a lumen; wherein said applicator instrument is operable to be moved within said lumen; wherein said deformable bio-inert heating element includes a plurality of leaves configured to be folded relative to one another within said lumen. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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Specification