Patents by Inventor Peter D. Gadsby

Peter D. Gadsby 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: 10085794
    Abstract: The present disclosure provides a bipolar forceps. The bipolar forceps includes a housing having a handle assembly including a movable handle and one or more shafts. An end effector assembly operatively connects to a distal end of the shaft and includes a pair of first and second jaw members. A solenoid is in operative communication with the movable handle and operatively couples to a drive rod operatively coupled to at least one of the first and second jaw members for causing movement thereof. One or both of the first and second jaw members includes one or more teeth configured to engage one or more teeth located on the drive rod such that rotation of the solenoid imparts one of longitudinal and rotational movement of the drive rod such that at least one of the first and second jaw members moves between the open and closed positions.
    Type: Grant
    Filed: May 16, 2016
    Date of Patent: October 2, 2018
    Assignee: COVIDIEN LP
    Inventors: Duane E. Kerr, Peter D. Gadsby, Glenn A. Horner
  • Patent number: 9888958
    Abstract: A forceps includes an end effector assembly including first and second jaw members. One or both of the jaw members is moveable relative to the other between a spaced-apart position and an approximated position for grasping tissue therebetween. One or both of the jaw members includes a jaw frame including an engagement recess defined on each lateral side thereof and a replaceable component configured for slidable positioning about the jaw frame. The replaceable component includes an outer jaw housing having an engagement tang disposed on each lateral side thereof. The engagement tangs are configured to engage the engagement recesses of the jaw frame upon slidable positioning of the replaceable component about the jaw frame to secure the replaceable component to the jaw frame. The replaceable component includes an electrically conductive tissue sealing plate engaged to the outer jaw housing to define a tissue sealing surface.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: February 13, 2018
    Assignee: COVIDIEN LP
    Inventors: Allan J. Evans, Peter M. Mueller, Peter D. Gadsby
  • Patent number: 9345535
    Abstract: The present disclosure provides a bipolar forceps. The bipolar forceps includes a housing having a handle assembly including a movable handle and one or more shafts. An end effector assembly operatively connects to a distal end of the shaft and includes a pair of first and second jaw members. A solenoid is in operative communication with the movable handle and operatively couples to a drive rod operatively coupled to at least one of the first and second jaw members for causing movement thereof. One or both of the first and second jaw members includes one or more teeth configured to engage one or more teeth located on the drive rod such that rotation of the solenoid imparts one of longitudinal and rotational movement of the drive rod such that at least one of the first and second jaw members moves between the open and closed positions.
    Type: Grant
    Filed: October 14, 2014
    Date of Patent: May 24, 2016
    Assignee: Covidien LP
    Inventors: Duane E. Kerr, Peter D. Gadsby, Glenn A. Horner
  • Patent number: 8968317
    Abstract: A forceps includes an end effector assembly including first and second jaw members. One or both of the jaw members is moveable relative to the other between a spaced-apart position and an approximated position for grasping tissue therebetween. One or both of the jaw members includes a jaw frame including an engagement recess defined on each lateral side thereof and a replaceable component configured for slidable positioning about the jaw frame. The replaceable component includes an outer jaw housing having an engagement tang disposed on each lateral side thereof. The engagement tangs are configured to engage the engagement recesses of the jaw frame upon slidable positioning of the replaceable component about the jaw frame to secure the replaceable component to the jaw frame. The replaceable component includes an electrically conductive tissue sealing plate engaged to the outer jaw housing to define a tissue sealing surface.
    Type: Grant
    Filed: August 18, 2011
    Date of Patent: March 3, 2015
    Assignee: Covidien LP
    Inventors: Allan J. Evans, Peter M. Mueller, Peter D. Gadsby
  • Patent number: 8968307
    Abstract: A forceps includes an end effector assembly having first and second jaw members. One (or both) of the first and second jaw members is moveable relative to the other between a spaced-apart position and an approximated position for grasping tissue therebetween. One (or both) of the jaw members includes a longitudinally-extending blade channel defined therein. An electrical cutting insert is releasably engageable within the blade channel of the jaw member such that the jaw member is transitionable between a mechanical cutting mode, wherein the electrical cutting insert is disengaged from the jaw member to permit reciprocation of a knife blade through the blade channel for mechanically cutting tissue grasped between the jaw members, and an electrical cutting mode, wherein the electrical cutting insert is engaged within the blade channel of the jaw member for electrically cutting tissue grasped between the jaw members.
    Type: Grant
    Filed: August 18, 2011
    Date of Patent: March 3, 2015
    Assignee: Covidien LP
    Inventors: Allan J. Evans, Peter M. Mueller, Peter D. Gadsby
  • Patent number: 8858554
    Abstract: The present disclosure provides a bipolar forceps. The bipolar forceps includes a housing having a handle assembly including a movable handle and one or more shafts. An end effector assembly operatively connects to a distal end of the shaft and includes a pair of first and second jaw members. A solenoid is in operative communication with the movable handle and operatively couples to a drive rod operatively coupled to at least one of the first and second jaw members for causing movement thereof. One or both of the first and second jaw members includes one or more teeth configured to engage one or more teeth located on the drive rod such that rotation of the solenoid imparts one of longitudinal and rotational movement of the drive rod such that at least one of the first and second jaw members moves between the open and closed positions.
    Type: Grant
    Filed: June 4, 2013
    Date of Patent: October 14, 2014
    Assignee: Covidien LP
    Inventors: Duane E. Kerr, Peter D. Gadsby, Glenn A. Horner
  • Patent number: 8690867
    Abstract: An electrosurgical return electrode is disclosed. The return electrode includes a first and second flexible conductive material layers and a material layer disposed between the first and second conductive material layers. The material layer is transitionable between a solid state and a non-solid state, the material layer is also configured to melt upon an increase in temperature beyond a predetermined threshold, thereby increasing conductivity between the first and second conductive material layer.
    Type: Grant
    Filed: February 14, 2013
    Date of Patent: April 8, 2014
    Assignee: Covidien LP
    Inventors: James E. Dunning, Peter D. Gadsby, David Gresback
  • Patent number: 8685056
    Abstract: A forceps includes an end effector assembly having first and second jaw members. One or both of the jaw members is moveable relative to the other between a spaced-apart position and an approximated position for grasping tissue therebetween. One or both of the jaw members includes a jaw frame and a replaceable component engageable with the jaw frame. The replaceable component includes one or more engagement members configured to engage a corresponding engagement member(s) disposed on the jaw frame to secure the replaceable component to the jaw frame. The engagement member(s) is transitionable from a new state to a used state, wherein, in the used state, the engagement member(s) is incapable of reengaging the corresponding engagement member(s).
    Type: Grant
    Filed: August 18, 2011
    Date of Patent: April 1, 2014
    Assignee: Covidien LP
    Inventors: Allan J. Evans, Peter M. Mueller, Peter D. Gadsby
  • Patent number: 8454602
    Abstract: The present disclosure provides a bipolar forceps. The bipolar forceps includes a housing having a handle assembly including a movable handle and one or more shafts. An end effector assembly operatively connects to a distal end of the shaft and includes a pair of first and second jaw members. A solenoid is in operative communication with the movable handle and operatively couples to a drive rod operatively coupled to at least one of the first and second jaw members for causing movement thereof. One or both of the first and second jaw members includes one or more teeth configured to engage one or more teeth located on the drive rod such that rotation of the solenoid imparts one of longitudinal and rotational movement of the drive rod such that at least one of the first and second jaw members moves between the open and closed positions.
    Type: Grant
    Filed: May 4, 2012
    Date of Patent: June 4, 2013
    Assignee: Covidien LP
    Inventors: Duane E. Kerr, Peter D. Gadsby, Glenn A. Horner
  • Patent number: 8382749
    Abstract: An electrosurgical return electrode is disclosed. The return electrode includes a first and second flexible conductive material layers and a material layer disposed between the first and second conductive material layers. The material layer is transitionable between a solid state and a non-solid state, the material layer is also configured to melt upon an increase in temperature beyond a predetermined threshold, thereby increasing conductivity between the first and second conductive material layer.
    Type: Grant
    Filed: July 17, 2012
    Date of Patent: February 26, 2013
    Assignee: Covidien LP
    Inventors: James E. Dunning, Peter D. Gadsby, David Gresback
  • Publication number: 20130046337
    Abstract: A forceps includes an end effector assembly having first and second jaw members. One or both of the jaw members is moveable relative to the other between a spaced-apart position and an approximated position for grasping tissue therebetween. One or both of the jaw members includes a jaw frame and a replaceable component engageable with the jaw frame. The replaceable component includes one or more engagement members configured to engage a corresponding engagement member(s) disposed on the jaw frame to secure the replaceable component to the jaw frame. The engagement member(s) is transitionable from a new state to a used state, wherein, in the used state, the engagement member(s) is incapable of reengaging the corresponding engagement member(s).
    Type: Application
    Filed: August 18, 2011
    Publication date: February 21, 2013
    Applicant: TYCO Healthcare Group LP
    Inventors: Allan J. Evans, Peter M. Mueller, Peter D. Gadsby
  • Publication number: 20130046306
    Abstract: A forceps includes an end effector assembly including first and second jaw members. One or both of the jaw members is moveable relative to the other between a spaced-apart position and an approximated position for grasping tissue therebetween. One or both of the jaw members includes a jaw frame including an engagement recess defined on each lateral side thereof and a replaceable component configured for slidable positioning about the jaw frame. The replaceable component includes an outer jaw housing having an engagement tang disposed on each lateral side thereof. The engagement tangs are configured to engage the engagement recesses of the jaw frame upon slidable positioning of the replaceable component about the jaw frame to secure the replaceable component to the jaw frame. The replaceable component includes an electrically conductive tissue sealing plate engaged to the outer jaw housing to define a tissue sealing surface.
    Type: Application
    Filed: August 18, 2011
    Publication date: February 21, 2013
    Applicant: TYCO Healthcare Group LP
    Inventors: Allan J. Evans, Peter M. Mueller, Peter D. Gadsby
  • Publication number: 20130046303
    Abstract: A forceps includes an end effector assembly having first and second jaw members. One (or both) of the first and second jaw members is moveable relative to the other between a spaced-apart position and an approximated position for grasping tissue therebetween. One (or both) of the jaw members includes a longitudinally-extending blade channel defined therein. An electrical cutting insert is releasably engageable within the blade channel of the jaw member such that the jaw member is transitionable between a mechanical cutting mode, wherein the electrical cutting insert is disengaged from the jaw member to permit reciprocation of a knife blade through the blade channel for mechanically cutting tissue grasped between the jaw members, and an electrical cutting mode, wherein the electrical cutting insert is engaged within the blade channel of the jaw member for electrically cutting tissue grasped between the jaw members.
    Type: Application
    Filed: August 18, 2011
    Publication date: February 21, 2013
    Applicant: TYCO Healthcare Group LP
    Inventors: Allan J. Evans, Peter M. Mueller, Peter D. Gadsby
  • Publication number: 20120221004
    Abstract: The present disclosure provides a bipolar forceps. The bipolar forceps includes a housing having a handle assembly including a movable handle and one or more shafts. An end effector assembly operatively connects to a distal end of the shaft and includes a pair of first and second jaw members. A solenoid is in operative communication with the movable handle and operatively couples to a drive rod operatively coupled to at least one of the first and second jaw members for causing movement thereof. One or both of the first and second jaw members includes one or more teeth configured to engage one or more teeth located on the drive rod such that rotation of the solenoid imparts one of longitudinal and rotational movement of the drive rod such that at least one of the first and second jaw members moves between the open and closed positions.
    Type: Application
    Filed: May 4, 2012
    Publication date: August 30, 2012
    Applicant: TYCO HEALTHCARE GROUP LP
    Inventors: Duane E. Kerr, Peter D. Gadsby, Glenn A. Horner
  • Patent number: 8187273
    Abstract: The present disclosure provides a bipolar forceps. The bipolar forceps includes a housing having a handle assembly including a movable handle and one or more shafts. An end effector assembly operatively connects to a distal end of the shaft and includes a pair of first and second jaw members. A solenoid is in operative communication with the movable handle and operatively couples to a drive rod operatively coupled to at least one of the first and second jaw members for causing movement thereof. One or both of the first and second jaw members includes one or more teeth configured to engage one or more teeth located on the drive rod such that rotation of the solenoid imparts one of longitudinal and rotational movement of the drive rod such that at least one of the first and second jaw members moves between the open and closed positions.
    Type: Grant
    Filed: May 7, 2009
    Date of Patent: May 29, 2012
    Assignee: TYCO Healthcare Group LP
    Inventors: Duane E. Kerr, Peter D. Gadsby, Glenn A. Horner
  • Publication number: 20100286691
    Abstract: The present disclosure provides a bipolar forceps. The bipolar forceps includes a housing having a handle assembly including a movable handle and one or more shafts. An end effector assembly operatively connects to a distal end of the shaft and includes a pair of first and second jaw members. A solenoid is in operative communication with the movable handle and operatively couples to a drive rod operatively coupled to at least one of the first and second jaw members for causing movement thereof. One or both of the first and second jaw members includes one or more teeth configured to engage one or more teeth located on the drive rod such that rotation of the solenoid imparts one of longitudinal and rotational movement of the drive rod such that at least one of the first and second jaw members moves between the open and closed positions.
    Type: Application
    Filed: May 7, 2009
    Publication date: November 11, 2010
    Inventors: Duane E. Kerr, Peter D. Gadsby, Glenn A. Horner
  • Patent number: 6600957
    Abstract: A disposable medical electrode for delivering high-energy defibrillation or pacing stimulation and having energy dispersion characteristics. A fanned wire contacts the top of an electrode member for delivering energy to and transmitting energy from the electrode. A hydrogel is disposed on the bottom of the electrode member and an electrically conductive metal/metal chloride ink coating underlies the hydrogel. The ink coating has (a) a center with a first amount of ink, (b) an inner edge defining the terminus of the center and a step at which the ink content of the ink coating drops from the first amount of ink to a lesser second amount of ink, (c) an outer edge defining the terminus of the ink, and (d) a predetermined gradient disposed between the inner edge at which the ink coating has the second amount of ink and the outer edge at which the ink is substantially absent.
    Type: Grant
    Filed: June 28, 2001
    Date of Patent: July 29, 2003
    Assignee: The Ludlow Company LP
    Inventor: Peter D. Gadsby
  • Publication number: 20030004558
    Abstract: A disposable medical electrode for delivering high-energy defibrillation or pacing stimulation and having energy dispersion characteristics. A fanned wire contacts the top of an electrode member for delivering energy to and transmitting energy from the electrode. A hydrogel is disposed on the bottom of the electrode member and an electrically conductive metal/metal chloride ink coating underlies the hydrogel. The ink coating has (a) a center with a first amount of ink, (b) an inner edge defining the terminus of the center and a step at which the ink content of the ink coating drops from the first amount of ink to a lesser second amount of ink, (c) an outer edge defining the terminus of the ink, and (d) a predetermined gradient disposed between the inner edge at which the ink coating has the second amount of ink and the outer edge at which the ink is substantially absent.
    Type: Application
    Filed: June 28, 2001
    Publication date: January 2, 2003
    Applicant: The Ludlow Company LP
    Inventor: Peter D. Gadsby
  • Patent number: 6351666
    Abstract: In accordance with the apparatus and method of the present invention, a biopotential lesion sensor is placed directly over a lesion in a symptomatic breast and a reference sensor is located away from the symptomatic breast. A plurality of electropotential test measurements are taken during a test period with the lesion sensor and averaged to obtain a primary test potential. This primary test potential can be weighted to compensate for one or more biologic variables such as patient age, time in the patient menstrual cycle, and the time of day during which the measurement is taken. To provide noise enhancement of the primary test potential average measurement, the symptomatic breast is divided into four equal quadrants with one quadrant containing the lesion.
    Type: Grant
    Filed: February 24, 1999
    Date of Patent: February 26, 2002
    Assignee: Biofield Corp.
    Inventors: Jack A. Cuzick, Richard J. Davies, John D. Stephens, Vera Borgwardt, Craig M. Housworth, Xingye Lei, Peter D. Gadsby, Abe Iskac
  • Patent number: 5456710
    Abstract: Disclosed is an electrode (10, 60) for placement upon the skin of a patient (12) to deliver electrical pulses from medical electronic equipment (16) to the patient. The electrode includes (10, 60) an electrically conductive layer (24, 74) having a skin-facing side and an upper side. An impedance-decreasing layer (32, 82) is adjacent a substantial portion of the skin-facing side of the conductive layer (24, 74). A substantially electrically nonconductive backing layer (18, 68) is adjacent the upper surface of the conductive layer (24, 74), the backing layer (18, 68) being substantially impermeable to the impedance-decreasing layer (32, 82). A gas-permeable layer (20, 70) is between the backing layer (18, 68) and the conductive layer (24, 74). Finally, a vent (22, 72) is provided for venting gas formed between the impedance-decreasing layer (32, 82) and the conductive layer (24, 74) to the environment.
    Type: Grant
    Filed: June 30, 1994
    Date of Patent: October 10, 1995
    Assignee: Physio-Control Corporation
    Inventor: Peter D. Gadsby