Patents by Inventor Lawrence T. Kirwan, Jr.

Lawrence T. Kirwan, Jr. 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).

  • Patent number: 11039875
    Abstract: A monopolar suction coagulator device is provided for use with a vacuum source and an electrosurgical generator to perform a coagulation procedure and an evacuation procedure at a surgical site. The device includes an active electrode portion at the distal end of a probe, and the probe is formed of a thermally conductive and electrically conductive, non-stick metal material along all or substantially all of its length, to aid in heat dissipation during a coagulation procedure.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: June 22, 2021
    Assignee: Kirwan Surgical Products LLC
    Inventor: Lawrence T. Kirwan, Jr.
  • Patent number: 10531932
    Abstract: A tip protector for electrosurgical forceps is provided. The tip protector includes two sleeves connected by a bridge spacer. Each sleeve fits over a respective forceps tine to protect the tips of the forceps. The bridge spacer is sufficiently rigid to maintain the spacing between the tips and prevent the tines from closing or opening. In this manner, the tips can be protected from damage and the tines can be protected against misalignment.
    Type: Grant
    Filed: December 10, 2015
    Date of Patent: January 14, 2020
    Assignee: Kirwan Surgical Products LLC
    Inventors: Lawrence T. Kirwan, Jr., Chadwick J. Whitcher
  • Publication number: 20180368910
    Abstract: An electrosurgical forceps having an enhanced capability to transfer heat from the tip to eliminate or minimize sticking of tissue is provided. A heat pipe is secured within a groove of at least one tine of the forceps. The heat pipe has an evaporator section in thermal communication with the tip, and a condenser section in thermal communication with a portion of the body, which serves as a heat sink to receive heat transferred from the tip. A method of manufacturing the electrosurgical forceps is also provided.
    Type: Application
    Filed: June 25, 2018
    Publication date: December 27, 2018
    Inventors: Lawrence T. KIRWAN, JR., Chadwick J. WHITCHER, Jerry R. GRIFFITHS
  • Publication number: 20170303989
    Abstract: A monopolar suction coagulator device is provided for use with a vacuum source and an electrosurgical generator to perform a coagulation procedure and an evacuation procedure at a surgical site. The device includes an active electrode portion at the distal end of a probe, and the probe is formed of a thermally conductive and electrically conductive, non-stick metal material along all or substantially all of its length, to aid in heat dissipation during a coagulation procedure.
    Type: Application
    Filed: April 26, 2016
    Publication date: October 26, 2017
    Inventor: Lawrence T. Kirwan, JR.
  • Publication number: 20170172645
    Abstract: An electrosurgical cable connector that can accept three different styles of electrosurgical forceps connection—a two-pin connection, a two-bladed connection, and a block-bladed connection—is provided for connecting an electrosurgical forceps to an electrosurgical generator.
    Type: Application
    Filed: December 17, 2015
    Publication date: June 22, 2017
    Inventors: Lawrence T. Kirwan, JR., Robert T. Boyd
  • Publication number: 20170165021
    Abstract: A tip protector for electrosurgical forceps is provided. The tip protector includes two sleeves connected by a bridge spacer. Each sleeve fits over a respective forceps tine to protect the tips of the forceps. The bridge spacer is sufficiently rigid to maintain the spacing between the tips and prevent the tines from closing or opening. In this manner, the tips can be protected from damage and the tines can be protected against misalignment.
    Type: Application
    Filed: December 10, 2015
    Publication date: June 15, 2017
    Inventors: Lawrence T. Kirwan, JR., Chadwick J. Whitcher
  • Patent number: 9662164
    Abstract: An electrosurgical cable connector that can accept three different styles of electrosurgical forceps connection—a two-pin connection, a two-bladed connection, and a block-bladed connection—is provided for connecting an electrosurgical forceps to an electrosurgical generator.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: May 30, 2017
    Assignee: Kirwan Surgical Products LLC
    Inventors: Lawrence T. Kirwan, Jr., Robert T. Boyd
  • Publication number: 20160317214
    Abstract: An electrosurgical forceps is provided with a gripping pad formed of a compliant material in the aperture in a gripping region of a blade member of the forceps. The gripping pad includes a pad member, a retaining member and a connecting pillar that extends through an aperture in the blade member.
    Type: Application
    Filed: May 1, 2015
    Publication date: November 3, 2016
    Inventors: Lawrence T. Kirwan, JR., Robert T. Boyd
  • Publication number: 20160262779
    Abstract: Electrosurgical forceps having a clad metal structure and a method of manufacturing electrosurgical forceps using a cladding process are provided. The clad metal structure of the forceps includes a first layer of non-stick material, which may be copper, a copper alloy, silver, or a silver alloy, and a second layer of a material providing good mechanical properties and light weight, which may be aluminum, an aluminum alloy, titanium, a titanium alloy, or stainless steel.
    Type: Application
    Filed: March 13, 2015
    Publication date: September 15, 2016
    Inventor: Lawrence T. Kirwan, JR.
  • Patent number: 8656585
    Abstract: An electrosurgical forceps has at least the tip of one blade member formed of a composite material having aligned elongated particles of nickel interspersed in a matrix of silver particles. The tip can be provided as a tip member attached, such as by brazing, to the body of the blade member, or the entire blade member can be formed of the silver/nickel composite material. In another embodiment, the tip or blade member is formed of a dispersion strengthened silver or copper composite material.
    Type: Grant
    Filed: December 6, 2011
    Date of Patent: February 25, 2014
    Assignee: Kirwan Surgical Products LLC
    Inventors: John P. Ariola, Jr., Lawrence T. Kirwan, Jr.
  • Patent number: 8108994
    Abstract: An electrosurgical forceps has at least the tip of one blade member formed of a composite material having aligned elongated particles of nickel interspersed in a matrix of silver particles. The tip can be provided as a tip member attached, such as by brazing, to the body of the blade member, or the entire blade member can be formed of the silver/nickel composite material. In another embodiment, the tip or blade member is formed of a dispersion strengthened silver or copper composite material.
    Type: Grant
    Filed: March 5, 2009
    Date of Patent: February 7, 2012
    Assignee: Kirwan Surgical Products LLC
    Inventors: John P. Ariola, Jr., Lawrence T. Kirwan, Jr.
  • Patent number: 7402754
    Abstract: A cable assembly interconnects an electrosurgical instrument and source equipment for power and fluid transfer. The cable assembly includes a unitary tubular assembly forming a lumen(s) and an insulating sheath(s) for an electrically conducting cord that are integrally interconnected via a web arrangement in a continuum of material. The web arrangement has a thickness sufficient to allow the lumen(s) and sheath(s) to be pulled apart upon application of a pulling force in a direction transverse to the direction of elongation of the tubular assembly.
    Type: Grant
    Filed: April 30, 2003
    Date of Patent: July 22, 2008
    Assignee: Kirwan Surgical Products, Inc.
    Inventors: Lawrence T. Kirwan, Jr., John P. Ariola, Jr.
  • Patent number: 6749610
    Abstract: An electro-surgical forceps has a pair of tines. At least one of the tines has an inner core of a metal such as stainless steel, nickel, or titanium, and an outer plating of a material having a thermal conductivity and preferably also an electrical conductivity greater than the core material. The outer plating covers all or substantially all of the tine. The outer plating is suitably formed by an electroplating process.
    Type: Grant
    Filed: August 15, 2002
    Date of Patent: June 15, 2004
    Assignee: Kirwan Surgical Products, Inc.
    Inventors: Lawrence T. Kirwan, Jr., John Paul Ariola, Jr.
  • Patent number: 6406476
    Abstract: A bipolar, fluid assisted coagulator/ablator probe having a coaxial bipolar electrode arrangement in which an elongated outer electrode is positioned concentrically around an elongated inner electrode. An elongated concentric electrical inner insulating layer is positioned between the outer electrode and the inner electrode. An outer insulating layer is concentrically disposed over the outer electrode such that only the annular distal end of the outer electrode is exposed for surgical activity. The inner electrode is hollow and forms a conduit for drawing fluid through the probe. The inner and outer insulating layers are a high-temperature cross-linked polyethylene. In addition, the elongated hollow electrode portion is curved near the distal end of the electrode portion, and the distal end has a beveled face that forms an acute angle with a common axis of the hollow elongated probe portion.
    Type: Grant
    Filed: August 15, 2000
    Date of Patent: June 18, 2002
    Assignee: Kirwan Surgical Products, Inc.
    Inventors: Lawrence T. Kirwan, Jr., Roger C. Odell, Joseph W. Tippett
  • Patent number: 6298550
    Abstract: An electro-surgical forceps are provided which minimize sticking to tissue of a patient. The forceps include a pair of electrically conducting blade members extending from an insulated cap portion. The blade members include an inner layer of copper or copper alloy having a thickness sufficient to dissipate heat generated at the tip to prevent sticking of tissue to the forceps during use. An outer covering of nickel or a nickel alloy covers the inner copper layer to prevent exposure of the copper. The outer covering comprises a first nickel layer metallurgically bonded to one side of the inner copper layer and a second nickel layer metallurgically bonded to an opposite side of the inner copper layer. The thickness of the nickel layers is sufficient to withstand the forming process, to minimize or prevent delamination from the inner copper layer, and to minimize or prevent exposure of the inner layer.
    Type: Grant
    Filed: July 29, 1999
    Date of Patent: October 9, 2001
    Assignee: Kirwan Surgical Products, Inc.
    Inventor: Lawrence T. Kirwan, Jr.
  • Patent number: 6228084
    Abstract: An electro-surgical forceps has a recessed irrigation channel. The forceps includes a pair of blades mounted in a cap portion. A groove is recessed in the inner surface of a first blade of the pair of blades. Tubing is disposed in the groove. The tubing terminates at a location spaced from the termination of the groove to provide an outlet from the groove. The depth of the groove and the outer diameter of the tubing are selected such that the tubing is substantially recessed below the inner surface of the first blade sufficiently that a surgeon's view of the inner faces of the tips of the blades is not obstructed by the irrigation channel. The blades may be covered with an insulating material if desired.
    Type: Grant
    Filed: April 6, 1999
    Date of Patent: May 8, 2001
    Assignee: Kirwan Surgical Products, Inc.
    Inventor: Lawrence T. Kirwan, Jr.
  • Patent number: 6174310
    Abstract: A bipolar coagulator includes a connector pin having an offset therein to provide a strong electrical connection between the pin and the conductor. The bipolar coagulator comprises an insulative housing extending along a longitudinal axis from a tip to a connector end. A coaxial conductor having an inner conductor and an outer conductor is disposed within the housing along the longitudinal axis of the housing. The inner conductor includes a terminal portion that protrudes from the outer conductor and has an offset therein to space the terminal portion from the longitudinal axis of the housing. A first connector pin is electrically coupled to the terminal portion of the inner conductor. A second connector pin is electrically coupled to the outer conductor along the longitudinal axis of the housing. The second connector includes an offset therein to space the pin portion from the longitudinal axis of the housing and from the first connector pin.
    Type: Grant
    Filed: May 24, 1999
    Date of Patent: January 16, 2001
    Assignee: Kirwan Surgical Products, Inc.
    Inventor: Lawrence T. Kirwan, Jr.
  • Patent number: D771810
    Type: Grant
    Filed: May 1, 2015
    Date of Patent: November 15, 2016
    Assignee: Kirwan Surgical Products LLC
    Inventors: Lawrence T. Kirwan, Jr., Robert T. Boyd, Aaron Cohen-Gadol
  • Patent number: D794789
    Type: Grant
    Filed: October 5, 2016
    Date of Patent: August 15, 2017
    Assignee: Kirwan Surgical Products LLC
    Inventors: Lawrence T. Kirwan, Jr., Robert T. Boyd, Aaron Cohen-Gadol
  • Patent number: D809136
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: January 30, 2018
    Assignee: Kirwan Surgical Products LLC
    Inventor: Lawrence T. Kirwan, Jr.