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: 20210364324
    Abstract: Identifying position of a first rotating shaft may comprise a first position detection system and a second position detection system. A controller may be coupled to a first sensor and a second sensor and may identify the position of the first shaft using the identified shaft position from either the first detection system or the second detection system, whichever is identified faster. The first shaft may have a first wheel disposed thereon with targets and one or more gaps disposed about the first wheel. A second shaft may have a second wheel disposed thereon with targets and one or more gaps disposed thereon. The second wheel is in a fixed relationship relative to the first wheel. The first detection system may use data simultaneously from the first sensor and the second sensor to eliminate targets to determine position. The second detection system uses data only from the first sensor.
    Type: Application
    Filed: September 3, 2020
    Publication date: November 25, 2021
    Applicant: Deere & Company
    Inventors: Brian D. McGee, Kristin A. Molstad, Gary J. Treichel, Rodney W. Kvalvog, Stephen B. Lukas, Thomas M. Johnson, Jeffrey L. England
  • Patent number: 11172958
    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: September 20, 2019
    Date of Patent: November 16, 2021
    Assignee: COVIDIEN LP
    Inventor: Kristin D. Johnson
  • Publication number: 20210251683
    Abstract: A tissue removal system for extracting a tissue specimen from a patient is disclosed. The system has a retrieval bag, a first electrode, and a return electrode. The retrieval bag has a flexible container with an opening. The first electrode is coupled to an interior of the flexible container, and has a conductive wire with an exposure area, a first load-bearing area, a coating having a first active electrode surface area, and an impedance that is greater than an impedance of the conductive wire. The first active electrode surface area is less than the exposure area. The coating is configured to degrade during application of electrosurgical power and wherein the degradation expands the first active electrode surface area during the application of the electrosurgical power.
    Type: Application
    Filed: January 27, 2021
    Publication date: August 19, 2021
    Inventors: Kristin D. Johnson, William N. Gregg, Dirk Johnson
  • Patent number: 10987160
    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: July 10, 2020
    Date of Patent: April 27, 2021
    Assignee: Covidien AG
    Inventors: Kristin D. Johnson, Robert Sharp, Jeff Unger, Gary M. Couture
  • Patent number: 10966775
    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: May 8, 2018
    Date of Patent: April 6, 2021
    Assignee: Covidien LP
    Inventors: Kristin D. Johnson, Kyle R. Rick, Christopher A. Valentine, Mika N. Sinanan
  • Patent number: 10925665
    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: Grant
    Filed: November 14, 2016
    Date of Patent: February 23, 2021
    Assignee: Eximis Surgical, LLC
    Inventors: Kristin D. Johnson, William N. Gregg, Dirk Johnson
  • 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
  • Publication number: 20200113556
    Abstract: A method and device for detecting leaks of a containment barrier. The method may comprise placing the barrier in contact with one or more volumes of fluid such that the one or more volumes of fluid is in contact with a first surface and a second surface of the containment barrier, then placing a first electrode in contact with a first volume of fluid within in a first area defined by the first surface of the containment barrier. The method may then comprise placing a second electrode in contact with a second volume of fluid in a second area defined by the second surface of the containment barrier, measuring electrical conductivity between the first and second electrodes; and determining a presence of a leak in the containment barrier based on a calculation using properties of the one or more volumes of fluid, the containment barrier, and the measured electrical conductivity.
    Type: Application
    Filed: September 27, 2019
    Publication date: April 16, 2020
    Inventors: Joseph A. Paulus, Carlo Balleria, Dirk Johnson, Kristin D. Johnson, William N. Gregg
  • 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