Patents by Inventor Ronald Underwood
Ronald Underwood 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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Publication number: 20020151885Abstract: The present invention provides systems and methods for selectively applying electrical energy to a target location within a patient's body, particularly including tissue in the spine. The present invention applies high frequency (RF) electrical energy to one or more electrode terminals in the presence of electrically conductive fluid to contract collagen fibers within the tissue structures. In one aspect of the invention, a system and method is provided for treating herniated or swollen discs within a patient's spine by applying sufficient electrical energy to the disc tissue to contract or shrink the collagen fibers within the nucleus pulposis. This causes the pulposis to shrink and withdraw from its impingement on the spinal nerve.Type: ApplicationFiled: February 20, 1998Publication date: October 17, 2002Inventors: RONALD A. UNDERWOOD, TERRY S. DAVISON, HIRA V. THAPLIYAL, PHILIP E. EGGERS
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Patent number: 6461350Abstract: Systems and methods are provided for removing adipose or fatty tissue underlying a patient's epidermis is disclosed (e.g., liposuction, abdominoplasty, and the like). The method includes positioning one or more active electrode(s) and one or more return electrode(s) in close proximity to a target region of fatty tissue. A high frequency voltage difference is applied between the active and return electrodes, and the fatty tissue or fragments of the fatty tissue are aspirated from the target region. The high frequency voltage either softens the fatty tissue or completely removes at least a portion of the tissue. In both embodiments, the remaining fatty tissue is more readily detached from the adjacent tissue in the absence of energy, and less mechanical force is required for removal. The bipolar configuration of the present invention controls the flow of current to the immediate region around the distal end of the probe, which minimizes tissue necrosis and the conduction of current through the patient.Type: GrantFiled: September 28, 1998Date of Patent: October 8, 2002Assignee: ArthroCare CorporationInventors: Ronald A. Underwood, Stephen M. Brunell, Michael A. Baker, Hira V. Thapliyal, Philip E. Eggers
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Publication number: 20020128641Abstract: The present invention provides systems, apparatus and methods for selective applying energy to a patient's dermis tissue to generate the growth of new collagen in this tissue, while minimizing the effect on the outer epidermis layer, thereby minimizing or suppressing the wound healing phase of the procedure. In one aspect of the invention, a method includes positioning a first electrode adjacent to, or in contact with, a region on or within a patient's skin, and applying a sufficient high frequency voltage between the first electrode and a second electrode to create a heat injury to a target tissue within the patient's dermis layer without ablating the epidermis layer overlying the target tissue. Typically, the voltage applied to the first and second electrodes is sufficient to induce heating of the dermis layer to about 60°-80° C., preferably about 65°-75° C. This induced heating causes the patient's body to undergo a wound healing response in the slightly inflamed tissue of the dermis.Type: ApplicationFiled: April 30, 2002Publication date: September 12, 2002Applicant: ArthroCare CorporationInventors: Ronald A. Underwood, Jean Woloszko
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Publication number: 20020087155Abstract: The present invention provides systems, apparatus and methods for selective applying energy to a patient's dermis tissue to generate the growth of new collagen in this tissue, while minimizing the effect on the outer epidermis layer, thereby minimizing or suppressing the wound healing phase of the procedure. In one aspect of the invention, a method includes positioning a first electrode adjacent to, or in contact with, a region on or within a patient's skin, and applying a sufficient high frequency voltage between the first electrode and a second electrode to create a heat injury to a target tissue within the patient's dermis layer without ablating the epidermis layer overlying the target tissue. Typically, the voltage applied to the first and second electrodes is sufficient to induce heating of the dermis layer to about 60°-80° C., preferably about 65°-75° C. This induced heating causes the patient's body to undergo a wound healing response in the slightly inflamed tissue of the dermis.Type: ApplicationFiled: September 25, 2001Publication date: July 4, 2002Inventors: Ronald A. Underwood, Jean Woloszko
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Publication number: 20010056280Abstract: The present invention provides systems and methods for selectively applying electrical energy to a target location within of a patient's body, particularly including tissue in the spine. The present invention applies high frequency (RF) electrical energy to one or more electrode terminals in the presence of electrically conductive fluid to remove, contract or otherwise modify the structure of tissue structures. In one aspect of the invention, a method is provided for treating herniated discs within a patient's spine by applying sufficient electrical energy to the disc tissue to reduce a volume of the disc, thereby relieving pressure on a spinal nerve. In one embodiment, the high frequency voltage is sufficient to ablate a portion of the nucleus pulposis, either the extruded portion outside of the annulus or a portion or all of the pulposis within the annulus.Type: ApplicationFiled: May 18, 2001Publication date: December 27, 2001Inventors: Ronald A. Underwood, Terry S. Davison, Hira V. Thapliyal, Philip E. Eggers
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Publication number: 20010029373Abstract: Systems and methods are provided for treating a discolored blood vessel in tissue under the surface of the skin. In this method, one or more active electrode(s) are positioned in close proximity to a target region of the blood vessel, and a sufficient high frequency voltage is applied to the electrode terminal(s) to cause thermal damage to a target region within the blood vessel. The thermal injury causes the vessel to shrink or to thrombose and collapse so that blood flow through the vessel is restricted or completely interrupted. Preferably, the vessel is injured with minimal thermal energy being applied to the surrounding tissue, which prevents the tissue discoloration or scarring associated with prior art thermal processes. The electrode terminal(s) may be positioned on the external surface of the skin, or they may be introduced through a percutaneous penetration in the outer skin surface to the blood vessel.Type: ApplicationFiled: January 30, 2001Publication date: October 11, 2001Applicant: ArthroCare CorporationInventors: Michael A. Baker, Stephen M. Brunell, Ronald A. Underwood
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Patent number: 6283961Abstract: The present invention provides systems and methods for selectively applying electrical energy to a target location within of a patient's body, particularly including tissue in the spine. The present invention applies high frequency (RF) electrical energy to one or more electrode terminals in the presence of electrically conductive fluid to remove, contract or otherwise modify the structure of tissue structures. In one aspect of the invention, a method is provided for treating herniated discs within a patient's spine by applying sufficient electrical energy to the disc tissue to reduce a volume of the disc, thereby relieving pressure on a spinal nerve. In one embodiment, the high frequency voltage is sufficient to ablate a portion of the nucleus pulposis, either the extruded portion outside of the annulus or a portion or all of the pulposis within the annulus.Type: GrantFiled: June 3, 1999Date of Patent: September 4, 2001Assignee: ArthroCare CorporationInventors: Ronald A. Underwood, Terry S. Davison, Hira V. Thapliyal, Philip E. Eggers
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Patent number: 6277112Abstract: The present invention provides systems and methods for selectively applying electrical energy to a target location within of a patient's body, particularly including tissue in the spine. The present invention applies high frequency (RF) electrical energy to one or more electrode terminals in the presence of electrically conductive fluid to remove, contract or otherwise modify the structure of tissue structures. In one aspect of the invention, a method is provided for treating herniated discs within a patient's spine by applying sufficient electrical energy to the disc tissue to reduce a volume of the disc, thereby relieving pressure on a spinal nerve. In one embodiment, the high frequency voltage is sufficient to ablate a portion of the nucleus pulposis, either the extruded portion outside of the annulus or a portion or all of the pulposis within the annulus.Type: GrantFiled: February 20, 1998Date of Patent: August 21, 2001Assignee: ArthroCare CorporationInventors: Ronald A. Underwood, Terry S. Davison, Hira V. Thapliyal, Philip E. Eggers
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Patent number: 6264651Abstract: The present invention provides systems and methods for selectively applying electrical energy to a target location within of a patient's body, particularly including tissue in the spine. The present invention applies high frequency (RF) electrical energy to one or more electrode terminals in the presence of electrically conductive fluid to remove, contract or otherwise modify the structure of tissue structures. In one aspect of the invention, a method is provided for treating herniated discs within a patient's spine by applying sufficient electrical energy to the disc tissue to reduce a volume of the disc, thereby relieving pressure on a spinal nerve. In one embodiment, the high frequency voltage is sufficient to ablate a portion of the nucleus pulposis, either the extruded portion outside of the annulus or a portion or all of the pulposis within the annulus.Type: GrantFiled: July 1, 1999Date of Patent: July 24, 2001Assignee: ArthroCare CorporationInventors: Ronald A. Underwood, Terry S. Davison, Hira V. Thapliyal, Philip E. Eggers
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Patent number: 6228082Abstract: Systems and methods are provided for treating a discolored blood vessel in tissue under the surface of the skin. In this method, one or more active electrode(s) are positioned in close proximity to a target region of the blood vessel, and a sufficient high frequency voltage is applied to the electrode terminal(s) to cause thermal damage to a target region within the blood vessel. The thermal injury causes the vessel to shrink or to thrombose and collapse so that blood flow through the vessel is restricted or completely interrupted. Preferably, the vessel is injured with minimal thermal energy being applied to the surrounding tissue, which prevents the tissue discoloration or scarring associated with prior art thermal processes. The electrode terminal(s) may be positioned on the external surface of the skin, or they may be introduced through a percutaneous penetration in the outer skin surface to the blood vessel.Type: GrantFiled: December 3, 1998Date of Patent: May 8, 2001Assignee: ArthroCare CorporationInventors: Michael A. Baker, Stephen M. Brunell, Ronald A. Underwood
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Patent number: 6149620Abstract: Systems and methods are provided for applying a high frequency voltage in the presence of an electrically conductive fluid to create a relatively low-temperature plasma for ablation of tissue adjacent to, or in contact with, the plasma. In one embodiment, an electrosurgical probe or catheter is positioned adjacent the target site so that one or more active electrode(s) are brought into contact with, or close proximity to, a target tissue in the presence of electrically conductive fluid. High frequency voltage is then applied between the electrode terminal(s) and one or more return electrode(s) to generate a plasma adjacent to the active electrode(s), and to volumetrically remove or ablate at least a portion of the target tissue. The high frequency voltage generates electric fields around the active electrode(s) with sufficient energy to ionize the conductive fluid adjacent to the active electrode(s).Type: GrantFiled: February 12, 1999Date of Patent: November 21, 2000Assignee: ArthroCare CorporationInventors: Michael A. Baker, Stephen M. Brunell, Jean Woloszko, Ronald A. Underwood, Hira V. Thapliyal, Philip E. Eggers
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Patent number: 6117109Abstract: Systems and methods are provided for removing fatty tissue underlying a patient's epidermis (e.g., blepharoplasty, brow lifts, eyelid shortening procedures, and the like). These methods include positioning one or more active electrode(s) and one or more return electrode(s) in close proximity to a target site on an external body surface of the patient. A high frequency voltage difference is applied between the active and return electrode(s), and the active electrode(s) are translated across the external body surface to create an incision therein. The bipolar configuration controls the flow of current to within and around the distal end of the probe, which minimizes tissue necrosis and the conduction of current through unwanted paths in the patient. The residual heat from the electrical energy also provides simultaneous hemostasis of severed blood vessels, which increases visualization and improves recovery time for the patient.Type: GrantFiled: September 28, 1998Date of Patent: September 12, 2000Assignee: ArthroCare CorporationInventors: Andrew R. Eggers, Philip E. Eggers, Ronald A. Underwood, Stephen M. Brunell, Hira V. Thapliyal
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Patent number: 4186452Abstract: The present invention relates to an adjustable bed support pedestal. The pedestal includes at least two longitudinal, substantially vertical planar support members which have a length substantially equal to the length of the bed to be supported. The longitudinal support members are arranged in spaced, parallel relationship with one another within the perimeter of the bed to be supported. Each of the longitudinal support members has at least two vertically extending slots extending partially therethrough in spaced parallel relationship.The support pedestal includes at least two transverse, substantially vertical planar support members extending outwardly at substantially right angles to a longitudinal support member from an inside end inside the longitudinal support member to an outside end at the perimeter of the bed to be supported. The transverse support members are arranged in spaced, parallel relationship with one another.Type: GrantFiled: July 31, 1978Date of Patent: February 5, 1980Inventor: Ronald Underwood