Patents by Inventor Kristin D. Johnson

Kristin D. Johnson 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).

  • Publication number: 20200337761
    Abstract: An end effector assembly for use with an instrument for sealing vessels and cutting vessels includes a pair of opposing first and second jaw members which are movable relative to one another from a first spaced apart position to a second position for grasping tissue therebetween. Each jaw member includes a pair of spaced apart electrically conductive tissue contacting surfaces which each have an insulator disposed therebetween, the conductive surfaces are connected to an electrosurgical energy source. The first jaw member includes an electrically conductive cutting element disposed within the insulator which extends towards the second tissue contacting surface to create a gap therebetween. The cutting element is inactive during the sealing process while the two pairs of electrically conductive surfaces are activated to seal tissue.
    Type: Application
    Filed: July 10, 2020
    Publication date: October 29, 2020
    Inventors: Kristin D. Johnson, Robert Sharp, Jeff Unger, Gary M. Couture
  • Publication number: 20200330146
    Abstract: A tissue segmentation device, controller, and methods therefore are disclosed. The device has an active electrode, a return electrode, a mechanical force application mechanism, voltage and current sensors, and a controller. The controller has a processing component, configured to assign a circuit status to a circuit comprising the at least one electrode. IF (PF?0) and ((Vrms/Irms)?T), THEN the circuit status is “open”. IF (PF?0) and ((Vrms/Irms)<T), THEN the circuit status is “short”. PF is a power factor of power applied to the electrosurgical device. T is a threshold value.
    Type: Application
    Filed: March 16, 2020
    Publication date: October 22, 2020
    Inventors: James A. Gilbert, Steven C. Rupp, William N. Gregg, Kristin D. Johnson, Dirk Johnson
  • Patent number: 10806507
    Abstract: An end effector assembly is provided. The end effector assembly includes a pair of first and second jaw members including respective seal plates adapted to connect to a source of electrosurgical energy. The first and second jaw members operable in a first bipolar mode of operation for treating tissue and a second bipolar mode of operation for separating tissue. A dissector translatable through one of the first and second jaw members is in electrical communication with one of the seal plates of the first and second jaw members and activatable in the second bipolar mode of operation for separating tissue when the first and second jaw members are in one of the open and clamping position and tissue is adjacent thereto.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: October 20, 2020
    Assignee: COVIDIEN LP
    Inventors: Kristin D. Johnson, Scott F. Alexander
  • Publication number: 20200129227
    Abstract: An end effector assembly for use with an instrument for sealing vessels and cutting vessels includes a pair of opposing first and second jaw members which are movable relative to one another from a first spaced apart position to a second position for grasping tissue therebetween. Each jaw member includes a pair of spaced apart electrically conductive tissue contacting surfaces which each have an insulator disposed therebetween, the conductive surfaces are connected to an electrosurgical energy source. The first jaw member includes an electrically conductive cutting element disposed within the insulator which extends towards the second tissue contacting surface to create a gap therebetween. The cutting element is inactive during the sealing process while the two pairs of electrically conductive surfaces are activated to seal tissue.
    Type: Application
    Filed: December 30, 2019
    Publication date: April 30, 2020
    Inventors: Kristin D. Johnson, Robert M. Sharp, Jeffrey R. Unger, Gary M. Couture
  • Patent number: 10603100
    Abstract: A controller for an electrosurgical device and related methods and devices are disclosed. The controller has a processing component to: (a) derive a power factor of power applied to the electrosurgical device; and (b) responsive to the deriving a power factor, assign a circuit status to a circuit comprising the electrosurgical device. IF (PF?0) and ((Vrms/Irms)?T), THEN the circuit status is “open”. IF (PF?0) and ((Vrms/Irms)<T), THEN the circuit status is “short”. PF is the power factor. Vrms is the root mean square of a voltage associated with the power applied to the at electrosurgical device. Irms is the root mean square of a current associated with the power applied to the electrosurgical device. T is a threshold value.
    Type: Grant
    Filed: April 11, 2017
    Date of Patent: March 31, 2020
    Assignee: Eximis Surgical Inc.
    Inventors: James A. Gilbert, Steven C. Rupp, William N. Gregg, Kristin D. Johnson, Dirk Johnson
  • Patent number: 10537384
    Abstract: An end effector assembly for use with an instrument for sealing vessels and cutting vessels includes a pair of opposing first and second jaw members which are movable relative to one another from a first spaced apart position to a second position for grasping tissue therebetween. Each jaw member includes a pair of spaced apart electrically conductive tissue contacting surfaces which each have an insulator disposed therebetween, the conductive surfaces are connected to an electrosurgical energy source. The first jaw member includes an electrically conductive cutting element disposed within the insulator which extends towards the second tissue contacting surface to create a gap therebetween. The cutting element is inactive during the sealing process while the two pairs of electrically conductive surfaces are activated to seal tissue.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: January 21, 2020
    Assignee: COVIDIEN LP
    Inventors: Kristin D. Johnson, Gary M. Couture, Jeff Unger, Robert Sharp
  • Publication number: 20200015848
    Abstract: A surgical port assembly for use with surgical instruments includes a body including an exterior surface and an interior space defined by an interior surface of the body. The surgical port assembly includes a control interface including a plurality of drive members coupled to the body and controllable to apply a force to a different portion of a shaft of an surgical instrument, when the shaft is disposed within the interior space, to move a distal portion of the surgical instrument to a desired position within a body cavity.
    Type: Application
    Filed: September 20, 2019
    Publication date: January 16, 2020
    Inventor: Kristin D. Johnson
  • Patent number: 10420583
    Abstract: A surgical port assembly for use with surgical instruments includes a body including an exterior surface and an interior space defined by an interior surface of the body. The surgical port assembly includes a control interface including a plurality of drive members coupled to the body and controllable to apply a force to a different portion of a shaft of an surgical instrument, when the shaft is disposed within the interior space, to move a distal portion of the surgical instrument to a desired position within a body cavity.
    Type: Grant
    Filed: May 22, 2014
    Date of Patent: September 24, 2019
    Assignee: Covidien LP
    Inventor: Kristin D. Johnson
  • Patent number: 10172668
    Abstract: A removable electrode assembly for use in combination with a forceps having opposing end effectors and a handle for effecting movement of the end effectors relative to one another. The electrode assembly includes a housing which is removably engageable with the forceps and a pair of electrodes which are attachable to a distal end of the housing. The electrodes are removably engageable with the end effectors of the forceps such that the electrodes reside in opposing relation relative to one another. The electrode assembly also includes a cover plate which is removably attachable to the housing and at least one stop member for controlling the distance between the opposing electrodes. The stop member is selectively engageable with the electrodes.
    Type: Grant
    Filed: May 21, 2015
    Date of Patent: January 8, 2019
    Assignee: COVIDIEN AG
    Inventors: Philip M. Tetzlaff, James S. Cunningham, Michael C. Moses, Roger F. Smith, Kristin D. Johnson, Paul R. Romero
  • Publication number: 20180256239
    Abstract: A medical device for treating and analyzing tissue includes a plasma applicator having a housing. The housing includes a substantially tubular shape and defines a lumen therethrough. The lumen is in fluid communication with an ionizable media source configured to supply ionizable media thereto. The applicator also includes one or more electrodes coupled to the housing. The electrodes are adapted to couple to a power source configured to energize the electrodes to ignite the ionizable media to form a plasma plume for treating tissue. The device also includes an effluent-collection attachment coupled to the plasma applicator. The effluent-collection attachment is configured to collect a portion of a plasma effluent.
    Type: Application
    Filed: May 8, 2018
    Publication date: September 13, 2018
    Inventors: KRISTIN D. JOHNSON, KYLE R. RICK, CHRISTOPHER A. VALENTINE, MIKA N. SINANAN
  • Patent number: 9974594
    Abstract: A medical device for treating and analyzing tissue includes a plasma applicator having a housing. The housing includes a substantially tubular shape and defines a lumen therethrough. The lumen is in fluid communication with an ionizable media source configured to supply ionizable media thereto. The applicator also includes one or more electrodes coupled to the housing. The electrodes are adapted to couple to a power source configured to energize the electrodes to ignite the ionizable media to form a plasma plume for treating tissue. The device also includes an effluent-collection attachment coupled to the plasma applicator. The effluent-collection attachment is configured to collect a portion of a plasma effluent.
    Type: Grant
    Filed: August 25, 2014
    Date of Patent: May 22, 2018
    Assignee: COVIDIEN LP
    Inventors: Kristin D. Johnson, Kyle R. Rick, Christopher A. Valentine, Mika N. Sinanan
  • Patent number: 9848938
    Abstract: The present disclosure relates to electrosurgical instruments for use in sealing various tissues. The instrument includes a housing having a shaft attached thereto and an end effector assembly attached to a distal end of the shaft, wherein the end effector assembly includes first and second jaw members attached thereto. The jaw members are movable relative to one another from a first position for approximating tissue to at least one additional position for grasping tissue therebetween. The jaw members have an elastomeric material disposed on an inner facing tissue contacting surface thereof with the elastomeric materials including an electrode disposed therein. The electrodes are offset a distance X relative to one another such that when the jaw members are closed about the tissue and when the electrodes are activated, electrosurgical energy flows through the tissue in a generally coplanar manner relative to the tissue contacting surfaces.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: December 26, 2017
    Assignee: Covidien AG
    Inventors: David A. Schechter, Kristin D. Johnson
  • Publication number: 20170296255
    Abstract: A controller for an electrosurgical device and related methods and devices are disclosed. The controller has a processing component to: (a) derive a power factor of power applied to the electrosurgical device; and (b) responsive to the deriving a power factor, assign a circuit status to a circuit comprising the electrosurgical device. IF (PF?0) and ((Vrms/Irms)?T), THEN the circuit status is “open”. IF (PF?0) and ((Vrms/Irms)<T), THEN the circuit status is “short”. PF is the power factor. Vrms is the root mean square of a voltage associated with the power applied to the at electrosurgical device. Irms is the root mean square of a current associated with the power applied to the electrosurgical device. T is a threshold value.
    Type: Application
    Filed: April 11, 2017
    Publication date: October 19, 2017
    Inventors: James A. Gilbert, Steven C. Rupp, William N. Gregg, Kristin D. Johnson, Dirk Johnson
  • Patent number: 9730672
    Abstract: A system and method of ultrasound imaging, the system including a laparoscopic surgical instrument including at least one ultrasound transducer, and a processor adapted to receive acoustic data from the ultrasound transducer and process the acoustic data from the ultrasound transducer to produce a graphical representation of the acoustic data, the graphical representation depicting echoic attributes of tissue substantially axially aligned with a transmission path of the at least one ultrasound transducer, and the distance of at least one tissue type having different echoic attributes from surrounding tissue form a distal tip of the laparoscopic surgical instrument.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: August 15, 2017
    Assignee: COVIDIEN LP
    Inventors: Peng Zheng, Christopher A. Valentine, Christopher T. Rusin, Kathy E. Rooks, Benjamin M. Corum, Sally D. Jandrall, Kristin D. Johnson
  • Publication number: 20170156787
    Abstract: An end effector assembly is provided. The end effector assembly includes a pair of first and second jaw members including respective seal plates adapted to connect to a source of electrosurgical energy. The first and second jaw members operable in a first bipolar mode of operation for treating tissue and a second bipolar mode of operation for separating tissue. A dissector translatable through one of the first and second jaw members is in electrical communication with one of the seal plates of the first and second jaw members and activatable in the second bipolar mode of operation for separating tissue when the first and second jaw members are in one of the open and clamping position and tissue is adjacent thereto.
    Type: Application
    Filed: February 15, 2017
    Publication date: June 8, 2017
    Inventors: KRISTIN D. JOHNSON, SCOTT F. ALEXANDER
  • Publication number: 20170156788
    Abstract: An end effector assembly for use with an instrument for sealing vessels and cutting vessels includes a pair of opposing first and second jaw members which are movable relative to one another from a first spaced apart position to a second position for grasping tissue therebetween. Each jaw member includes a pair of spaced apart electrically conductive tissue contacting surfaces which each have an insulator disposed therebetween, the conductive surfaces are connected to an electrosurgical energy source. The first jaw member includes an electrically conductive cutting element disposed within the insulator which extends towards the second tissue contacting surface to create a gap therebetween. The cutting element is inactive during the sealing process while the two pairs of electrically conductive surfaces are activated to seal tissue.
    Type: Application
    Filed: February 23, 2017
    Publication date: June 8, 2017
    Inventors: KRISTIN D. JOHNSON, GARY M. COUTURE, JEFF UNGER, ROBERT SHARP
  • Publication number: 20170135746
    Abstract: A removable electrode assembly for use in combination with a forceps having opposing end effectors and a handle for effecting movement of the end effectors relative to one another. The electrode assembly includes a housing which is removably engageable with the forceps and a pair of electrodes which are attachable to a distal end of the housing. The electrodes are removably engageable with the end effectors of the forceps such that the electrodes reside in opposing relation relative to one another. The electrode assembly also includes a cover plate which is removably attachable to the housing and at least one stop member for controlling the distance between the opposing electrodes. The stop member is selectively engageable with the electrodes.
    Type: Application
    Filed: January 30, 2017
    Publication date: May 18, 2017
    Inventors: Philip M. Tetzlaff, James S. Cunningham, Michael C. Moses, Roger F. Smith, Kristin D. Johnson, Paul R. Romero
  • Patent number: 9649147
    Abstract: A tissue segmentation device, controller, and methods therefore are disclosed. The device has an active electrode, a return electrode, a mechanical force application mechanism, voltage and current sensors, and a controller. The controller is configured to control a power output of the segmentation device. The controller has a processing component, responsive to the sensors, configured to execute the following: (a) derive a power factor of power applied to the at least one electrode; and (b) responsive to the deriving a power factor, assign a circuit status to a circuit comprising the at least one electrode. IF (PF?0) and ((Vrms/Irms)?T), THEN the circuit status is “open”. IF (PF?0) and ((Vrms/Irms)<T), THEN the circuit status is “short”. PF is the power factor. T is a threshold value.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: May 16, 2017
    Assignee: EXIMIS SURGICAL, LLC
    Inventors: James A. Gilbert, Steven C. Rupp, William N. Gregg, Kristin D. Johnson, Dirk Johnson
  • Publication number: 20170119455
    Abstract: A tissue removal system for extracting a tissue specimen from a patient and a related method are disclosed. The system has a flexible container with an opening associated with a proximal end, and a distal end. The system also has a plurality of wires removably coupled to an interior of the flexible container in a pre-collection configuration wherein the plurality of wires form a receiving space for receiving the tissue specimen and wherein the plurality of wires are positioned in a pattern. The pattern is selected to divide the tissue specimen into at least four pieces in response to at least one pulling force on the plurality of wires.
    Type: Application
    Filed: November 14, 2016
    Publication date: May 4, 2017
    Inventors: Kristin D. Johnson, William N. Gregg, Dirk Johnson
  • Publication number: 20170079708
    Abstract: A tissue segmentation device, controller, and methods therefore are disclosed. The device has an active electrode, a return electrode, a mechanical force application mechanism, voltage and current sensors, and a controller. The controller is configured to control a power output of the segmentation device. The controller has a processing component, responsive to the sensors, configured to execute the following: (a) derive a power factor of power applied to the at least one electrode; and (b) responsive to the deriving a power factor, assign a circuit status to a circuit comprising the at least one electrode. IF (PF ? 0) and ((Vrms/Irms)?T), THEN the circuit status is “open”. IF (PF ? 0) and ((Vrms/Irms)<T), THEN the circuit status is “short”. PF is the power factor. T is a threshold value.
    Type: Application
    Filed: September 15, 2016
    Publication date: March 23, 2017
    Inventors: James A. Gilbert, Steven C. Rupp, William N. Gregg, Kristin D. Johnson, Dirk Johnson