Patents by Inventor David B. Kieda
David B. Kieda has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7367971Abstract: A removable semi-insulating sheet for use in self-limiting electrosurgical return semi-insulating sheet for use with electrosurgery. Through the selection of impedance characteristics for the electrode materials of the principal body of the semi-insulating sheet, and through tailoring of semi-insulating sheet geometries, the return electrode of the present invention is self-regulating and self-limiting as to current density and temperature rise so as to prevent patient trauma. The semi-insulating sheet has an effective bulk impedance equal to or greater than about 4,000 ?·cm. The effective bulk impedance of the sheet may arise from resistive components, capacitive components, inductive components, or combinations thereof. The configuration of the presently described return electrode allows the electrode to self-limit the electrode's current densities, thereby preventing burning of a patient during surgery.Type: GrantFiled: January 23, 2007Date of Patent: May 6, 2008Assignee: Megadyne Medical Products, Inc.Inventors: Richard P. Fleenor, David B. Kieda, James D. Isaacson, Paul R. Borgmeier
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Patent number: 7166102Abstract: A removable semi-insulating sheet for use in self-limiting electrosurgical return semi-insulating sheet for use with electrosurgery. Through the selection of impedance characteristics for the electrode materials of the principal body of the semi-insulating sheet, and through tailoring of semi-insulating sheet geometries, the return electrode of the present invention is self-regulating and self-limiting as to current density and temperature rise so as to prevent patient trauma. The semi-insulating sheet has an effective bulk impedance equal to or greater than about 4,000 ?·cm. The effective bulk impedance of the sheet may arise from resistive components, capacitive components, inductive components, or combinations thereof. The configuration of the presently described return electrode allows the electrode to self-limit the electrode's current densities, thereby preventing burning of a patient during surgery.Type: GrantFiled: May 9, 2002Date of Patent: January 23, 2007Assignee: Megadyne Medical Products, Inc.Inventors: Richard P. Fleenor, David B. Kieda, James D. Isaacson, Paul R. Borgmeier
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Patent number: 6666859Abstract: A self-limiting electrosurgical return electrode for use with electrosurgery. Through selection of impedance characteristics for the materials of the principal body of the electrode, and through tailoring of electrode geometries, the electrode is self-regulating and self-limiting as to current density and temperature rise to prevent patient trauma. The return electrode includes a sheet of material having an effective bulk impedance equal to or greater than about 4,000&OHgr;.cm and one or more connectors for making electrical connection to the sheet. The effective bulk impedance of the sheet may arise from resistive components, capacitive components, inductive components, or combinations thereof. Configuration of the return electrode allows the electrode to self-limit the electrode's current densities, thereby preventing burning of a patient during surgery. Through employment of washable surface areas, the electrode is made readily cleanable, disinfectable, sterilizable, and reusable.Type: GrantFiled: September 9, 2002Date of Patent: December 23, 2003Assignee: Megadyne Medical Products, Inc.Inventors: Richard P. Fleenor, David B. Kieda, James D. Isaacson
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Patent number: 6582424Abstract: A capacitive reusable electrosurgical return electrode pad for use with electrosurgery. Through selection of the electrode geometries and the impedance characteristics of the electrode, the electrode is self-regulating and self-limiting as to current density and temperature rise so as to prevent patient trauma. The electrosurgical return electrode can include a connector and a sheet of material having an effective bulk impedance equal to or greater than about 100,000 &OHgr;·cm. The electrode can have a working surface area from about 11 to about 1,500 square inches (or about 70 to about 10,000 square centimeters). The electrode can be disposed on the working surface of an operating table or dentist's chair immediately underlying a patient during electrosurgery. This very large working surface area eliminates the need for direct contact or contact through conducting gels and by employing washable surface areas, it is made readily cleanable and reusable.Type: GrantFiled: January 24, 2001Date of Patent: June 24, 2003Assignee: Megadyne Medical Products, Inc.Inventors: Richard P. Fleenor, David B. Kieda, James D. Isaacson, Paul R. Borgmeier
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Patent number: 6544258Abstract: A self-limiting electrosurgical electrode for use with electrosurgery and various other surgical procedures. The electrode can include a pad and a conductive element that collectively has an effective bulk impedance equal to or greater than about 4,000 &OHgr;·cm. The effective bulk impedance of the electrode arises from resistive components, capacitive components, inductive components, or combinations thereof of both the pad and the conductive element. Through the selection of the impedance characteristics for the electrode materials, and through tailoring of electrode geometries, the electrode of the present invention is self-regulating and self-limiting as to current density and temperature rise so as to prevent patient trauma. Additionally, the selection of materials and electrode geometries can prevent the creation of pressure sore or decubitus ulcers on a patient resting upon the electrode.Type: GrantFiled: January 31, 2001Date of Patent: April 8, 2003Assignee: Mega-Dyne Medical Products, Inc.Inventors: Richard P. Fleenor, David B. Kieda, James D. Isaacson, Paul R. Borgmeier
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Publication number: 20030040741Abstract: A removable semi-insulating sheet for use in self-limiting electrosurgical return semi-insulating sheet for use with electrosurgery. Through the selection of impedance characteristics for the electrode materials of the principal body of the semi-insulating sheet, and through tailoring of semi-insulating sheet geometries, the return electrode of the present invention is self-regulating and self-limiting as to current density and temperature rise so as to prevent patient trauma. The semi-insulating sheet has an effective bulk impedance equal to or greater than about 4,000 &OHgr;·cm. The effective bulk impedance of the sheet may arise from resistive components, capacitive components, inductive components, or combinations thereof. The configuration of the presently described return electrode allows the electrode to self-limit the electrode's current densities, thereby preventing burning of a patient during surgery.Type: ApplicationFiled: May 9, 2002Publication date: February 27, 2003Applicant: Mega-Dyne Medical Products, Inc.Inventors: Richard P. Fleenor, David B. Kieda, James D. Isaacson, Paul R. Borgmeier
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Patent number: 6454764Abstract: A self-limiting electrosurgical return electrode for use with electrosurgery. Through the selection of impedance characteristics for the electrode materials of the principal body of the electrode, and through tailoring of electrode geometries, the return electrode of the present invention is self-regulating and self-limiting as to current density and temperature rise so as to prevent patient trauma. The electrosurgical return electrode includes a sheet of material having an effective bulk impedance equal to or greater than about 4,000 &OHgr;·cm and one or more connectors for making electrical connection to the sheet. The effective bulk impedance of the sheet may arise from resistive components, capacitive components, inductive components, or combinations thereof. The configuration of the presently described return electrode allows the electrode to self-limit the electrode's current densities, thereby preventing burning of a patient during surgery.Type: GrantFiled: May 12, 2000Date of Patent: September 24, 2002Inventors: Richard P. Fleenor, David B. Kieda, James D. Isaacson
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Publication number: 20010029367Abstract: A self-limiting electrosurgical electrode for use with electrosurgery and various other surgical procedures. The electrode can include a pad and a conductive element that collectively has an effective bulk impedance equal to or greater than about 4,000 &OHgr;·cm. The effective bulk impedance of the electrode arises from resistive components, capacitive components, inductive components, or combinations thereof of both the pad and the conductive element. Through the selection of the impedance characteristics for the electrode materials, and through tailoring of electrode geometries, the electrode of the present invention is self-regulating and self-limiting as to current density and temperature rise so as to prevent patient trauma. Additionally, the selection of materials and electrode geometries can prevent the creation of pressure sore or decubitus ulcers on a patient resting upon the electrode.Type: ApplicationFiled: January 31, 2001Publication date: October 11, 2001Applicant: Megadyne Medical Products, Inc.Inventors: Richard P. Fleenor, David B. Kieda, James D. Isaacson, Paul R. Borgmeier
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Publication number: 20010021848Abstract: A capacitive reusable electrosurgical return electrode pad for use with electrosurgery. Through selection of the electrode geometries and the impedance characteristics of the electrode, the electrode is self-regulating and self-limiting as to current density and temperature rise so as to prevent patient trauma. The electrosurgical return electrode can include a connector and a sheet of material having an effective bulk impedance equal to or greater than about 100,000 &OHgr;·cm. The electrode can have a working surface area from about 11 to about 1,500 square inches (or about 70 to about 10,000 square centimeters). The electrode can be disposed on the working surface of an operating table or dentist's chair immediately underlying a patient during electrosurgery. This very large working surface area eliminates the need for direct contact or contact through conducting gels and by employing washable surface areas, it is made readily cleanable and reusable.Type: ApplicationFiled: January 24, 2001Publication date: September 13, 2001Applicant: MegaDyne Medical Products, Inc.Inventors: Richard P. Fleenor, David B. Kieda, James D. Isaacson, Paul R. Borgmeier
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Patent number: 6222409Abstract: Programmable analog delay line devices for analog signal processing are constructed on a single integrated circuit chip using a switched capacitor storage scheme for short-term storage of the voltage or charge waveform. These devices provide variable maximum delay times without signal attenuation and with delay-to-risetime ratios of up to 102 to 103. A vector array of switched capacitor analog storage elements may be arranged in a ring-buffer topology, with the number of switched capacitor elements ranging from between about 10 and about 105. Two internal counters incremented by a common clock keep track of the variable delay between an input signal and an output signal.Type: GrantFiled: July 16, 1999Date of Patent: April 24, 2001Assignee: University of Utah Research FoundationInventors: David B. Kieda, Michael H. Salamon
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Patent number: 6214000Abstract: A reusable electrosurgical return electrode pad for use with electrosurgery. In one embodiment it includes a presentation or working surface area lying in the range of from about 11 to about 1,500 square inches. In another the working surface is at least as large as that of a projection of about half of the profile of the trunk of a patient. In yet another, it includes a working surface area at least as large as that of a projection of the profile of both the trunk and legs of a patient. It is adapted for disposition on the working surface of an operating table or dentist's chair immediately underlying a patient during electrosurgery. By presenting a very large surface area, the need for direct contact or contact through conducting jells is eliminated; through employment of washable surface areas, it is made readily cleanable and reusable; and through the inclusion of capacitive.Type: GrantFiled: November 6, 1999Date of Patent: April 10, 2001Inventors: Richard P. Fleenor, David B. Kieda, James D. Isaacson
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Patent number: 6083221Abstract: A reusable electrosurgical return electrode pad for use with electrosurgery. In one embodiment it includes a presentation or working surface area at lying in a range of from about 100 to about 20,000 square centimeters. In another the working surface is at least as large as that of a projection of about half of the profile of the trunk of a patient. In yet another, it includes a working surface area at least as large as that of a projection of the profile of both the trunk and legs of a patient. It is adapted for disposition on the working surface of an operating table or dentist's chair immediately underlying a patient during electrosurgery.Type: GrantFiled: November 30, 1998Date of Patent: July 4, 2000Assignee: MegaDyne Medical Products, Inc.Inventors: Richard P. Fleenor, David B. Kieda, James D. Isaacson