METHOD OF USING ELECTROSURGICAL DEVICE FOR RESTRICTING LOSS OF BLOOD DURING SURGERY
First Claim
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1. In the surgical treatment of a human or animal body, a method of severing a portion of diseased liver from the body without excessive bleeding, the method comprising:
- providing a device, the device comprising an applicator having at least one face and including an array of four needles arranged in a rectangular pattern of two rows by two columns that define a central channel structured and arranged such that two of said four tissue-piercing needles are positioned on one side of a width of diseased liver tissue and two of said needles are arranged to be positioned on an opposite side of said width of diseased liver tissue, said width of tissue defining a planned incision line corresponding with said channel, said plurality of four tissue-piercing needles structured and arranged to be energizeable together to deliver three-dimensional energy among and with a cross-flow across said plurality of tissue-piercing needles, said applicator structured to be operably coupled to a source of electromagnetic energy;
positioning said array of four needles arranged in two rows by two columns such that two of said four tissue-piercing needles are positioned on one side of a width of diseased liver tissue and two of said needles are positioned on an opposite side of said width of diseased liver tissue such that said positioning defines a planned incision line corresponding with said channel, said array of needles serving to confine and transmit the electromagnetic energy field three-dimensionally;
extending the tissue-piercing distal tips of said array of needles from said at least one face of the applicator into said diseased liver tissue at a point on the planned incision line such that said four needles define a volume of liver tissue to be treated;
applying said electromagnetic energy three-dimensionally among said array of four needles into the volume of liver tissue at said point on the planned incision line such that localized heating of said volume of liver tissue is achieved and blood vessels within said volume of liver tissue are coagulated;
removing the tissue-piercing distal tips of said array of needles from the volume of tissue to be treated;
advancing the applicator along the planned incision line in step-wise manner, extending the tissue-piercing distal tips of said array of needles into a subsequent volume of tissue to be treated along said planned incision line, and applying said electromagnetic energy three-dimensionally among said array of four needles into the volume of the tissue to be treated along said planned incision line until said electromagnetic energy has been applied along the length of said incision line and blood vessels in the liver tissue along said planned incision line are coagulated; and
severing the diseased liver tissue from the body by incision along said planned incision line without excessive bleeding.
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Abstract
A device for generating localized heating in a selected body tissue includes an applicator having a source of microwave radiation and an array of retractable needles arranged so as to extend from one face of the applicator and, in operation, to confine the irradiated microwave energy field emanating from the applicator. The device has application for controlling excessive bleeding from severed tissue during surgical procedures.
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Citations
43 Claims
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1. In the surgical treatment of a human or animal body, a method of severing a portion of diseased liver from the body without excessive bleeding, the method comprising:
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providing a device, the device comprising an applicator having at least one face and including an array of four needles arranged in a rectangular pattern of two rows by two columns that define a central channel structured and arranged such that two of said four tissue-piercing needles are positioned on one side of a width of diseased liver tissue and two of said needles are arranged to be positioned on an opposite side of said width of diseased liver tissue, said width of tissue defining a planned incision line corresponding with said channel, said plurality of four tissue-piercing needles structured and arranged to be energizeable together to deliver three-dimensional energy among and with a cross-flow across said plurality of tissue-piercing needles, said applicator structured to be operably coupled to a source of electromagnetic energy; positioning said array of four needles arranged in two rows by two columns such that two of said four tissue-piercing needles are positioned on one side of a width of diseased liver tissue and two of said needles are positioned on an opposite side of said width of diseased liver tissue such that said positioning defines a planned incision line corresponding with said channel, said array of needles serving to confine and transmit the electromagnetic energy field three-dimensionally; extending the tissue-piercing distal tips of said array of needles from said at least one face of the applicator into said diseased liver tissue at a point on the planned incision line such that said four needles define a volume of liver tissue to be treated; applying said electromagnetic energy three-dimensionally among said array of four needles into the volume of liver tissue at said point on the planned incision line such that localized heating of said volume of liver tissue is achieved and blood vessels within said volume of liver tissue are coagulated; removing the tissue-piercing distal tips of said array of needles from the volume of tissue to be treated; advancing the applicator along the planned incision line in step-wise manner, extending the tissue-piercing distal tips of said array of needles into a subsequent volume of tissue to be treated along said planned incision line, and applying said electromagnetic energy three-dimensionally among said array of four needles into the volume of the tissue to be treated along said planned incision line until said electromagnetic energy has been applied along the length of said incision line and blood vessels in the liver tissue along said planned incision line are coagulated; and severing the diseased liver tissue from the body by incision along said planned incision line without excessive bleeding. - View Dependent Claims (2, 19, 20, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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3. A method of severing tissue from a human or animal body without excessive bleeding, the method comprising:
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(a) inserting a device into tissue or a part of an organ to be treated, the device comprising an applicator structured to be operably coupled to a source of electromagnetic energy, said applicator including an array of four needles arranged in a rectangular pattern of two by two needles thereon, each needle having tissue-piercing means; (b) positioning the tissue-piercing means of said array of four needles into a desired depth of approximately 10 millimeters in a volume of the tissue to be treated defined by said four needles; (c) applying the electromagnetic energy to the desired depth of the volume of tissue to be treated to heat the tissue; (d) advancing the tissue-piercing means of said array of needles along the length of a planned incision line; (e) creating a heat-treated tissue volume as long as the length of the planned incision line, as deep as the desired depth, having a width that extends across the planned incision line between said needles arranged in said rectangular pattern of two by two needles, wherein the heat-treated tissue volume is centered on the planned incision line and further wherein blood vessels located within said tissue are coagulated to said desired depth; (f) making an incision into the desired depth of the volume of tissue which has been heated along said planned incision line; and (g) severing the tissue or part of organ from the body by incision along said planned incision line without excessive bleeding. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 21, 22, 33, 34, 35)
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36. A method of surgically severing tissue from a human or animal body without excessive bleeding, the method comprising:
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(a) providing an applicator structured to be operably coupled to a source of electromagnetic energy, said applicator having an array of needles thereon, each needle having a sharp tissue-piercing end; (b) selecting in a tissue volume a planned incision plane with a planned incision depth and containing tissue which is prone to substantial bleeding upon incision thereinto; (c) at said planned incision plane, perforatingly inserting said sharp tissue-piercing ends of said needles to a planned insertion depth to pierce said tissue which is prone to bleeding; (d) applying said electromagnetic energy via said needles to said tissue volume to coagulate tissue in a coagulation volume, said coagulation volume containing said planned incision plane, straddling said incision plane and extending to the planned incision depth, in order to convert tissue in said coagulated volume from tissue prone to bleeding upon incision thereinto into tissue resistant to bleeding upon incision thereinto; and (e) making an incision to the planned incision depth along said planned incision plane to sever said tissue from the body without excessive bleeding. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43)
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Specification