Patents by Inventor Edmund A. TAM

Edmund A. TAM 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: 20210007594
    Abstract: A tissue visualization system comprises a flexible elongate shaft through which a lumen extends. The system also comprises a pliable visualization device coupled to a distal portion of the flexible elongate shaft. The pliable visualization device includes a chamber configured to receive a fluid. The system also comprises a piercing instrument configured to extend through the lumen and to penetrate a surface of the pliable visualization device.
    Type: Application
    Filed: July 28, 2020
    Publication date: January 14, 2021
    Inventors: David Miller, Zachary J. Malchano, Ruey-Feng Peh, Christopher A. Rothe, Vahid Saadat, Edmund Tam, Aseem K. Thakur
  • Publication number: 20200305693
    Abstract: A system for visualizing a tissue region of interest comprises a deployment catheter defining a lumen and a hood coupled to and extending distally from the deployment catheter. The hood has a low-profile configuration within a delivery sheath and a deployed configuration when extended distally of the delivery sheath. The hood in the deployed configuration defines an open area in fluid communication with the lumen. A distal portion of the deployment catheter extends into the open area. The system also comprises an imaging element coupled to an imager support member. When the hood is in the deployed configuration, the imaging element is configured to extend distally of the distal portion of the deployment catheter while the imager support member extends within the deployment catheter.
    Type: Application
    Filed: June 16, 2020
    Publication date: October 1, 2020
    Inventors: Vahid Saadat, Ruey-Feng Peh, Chris A. Rothe, Edmund Tam
  • Patent number: 10772492
    Abstract: A method of inhibiting flow of a purging fluid from a device comprises positioning an imaging hood in proximity to a tissue region to be visualized. The imaging hood includes a distal membrane which defines a main aperture. The imaging hood and the distal membrane define an open area. The method also comprises introducing the purging fluid into a proximal portion of the open area. The proximal portion is bounded by a proximal membrane including a plurality of apertures. The method also comprises pressurizing the proximal membrane with the purging fluid to a partially extended state in which the purging fluid flows through the plurality of apertures and through the main aperture. The method also comprises pressurizing the proximal membrane with the purging fluid to a blocking extended state in which the proximal membrane obstructs the main aperture to block the flow of the purging fluid through the main aperture.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: September 15, 2020
    Assignee: INTUITIVE SURGICAL OPERATIONS, INC.
    Inventors: David Miller, Vahid Saadat, Zachary J. Malchano, Ruey-Feng Peh, Aseem K. Thakur, Christopher A. Rothe, Edmund Tam
  • Publication number: 20200246070
    Abstract: An apparatus may be used for ablating a target tissue region disposed along a tissue surface. The apparatus may comprise a means for directing ablating energy into the target tissue region through the tissue surface and a means for imaging the tissue surface along the target tissue region while selectively directing the ablating energy. The imaging means may be coupled to the energy directing means.
    Type: Application
    Filed: March 27, 2020
    Publication date: August 6, 2020
    Inventors: N. Parker Willis, Zachary J. Malchano, Chris A. Rothe, Vahid Saadat, Ruey-Feng Peh, David Miller, Edmund A. Tam
  • Patent number: 10624695
    Abstract: A method of ablating a tissue region within a blood-filled environment comprises restraining a fluid within a visualization field in a portion of the blood-filled environment and visualizing the tissue region through the fluid within the visualization field. The method also includes transmitting ablating electrical energy from the fluid into the visualized tissue region.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: April 21, 2020
    Assignee: Intuitive Surgical Operations, Inc.
    Inventors: N. Parker Willis, Zachary J. Malchano, Chris A. Rothe, Vahid Saadat, Ruey-Feng Peh, David Miller, Edmund A. Tam
  • Publication number: 20200069166
    Abstract: A method of inhibiting flow of a purging fluid from a device comprises positioning an imaging hood in proximity to a tissue region to be visualized. The imaging hood includes a distal membrane which defines a main aperture. The imaging hood and the distal membrane define an open area. The method also comprises introducing the purging fluid into a proximal portion of the open area. The proximal portion is bounded by a proximal membrane including a plurality of apertures. The method also comprises pressurizing the proximal membrane with the purging fluid to a partially extended state in which the purging fluid flows through the plurality of apertures and through the main aperture. The method also comprises pressurizing the proximal membrane with the purging fluid to a blocking extended state in which the proximal membrane obstructs the main aperture to block the flow of the purging fluid through the main aperture.
    Type: Application
    Filed: June 28, 2019
    Publication date: March 5, 2020
    Inventors: David Miller, Vahid Saadat, Zachary J. Malchano, Ruey-Feng Peh, Aseem K. Thakur, Christopher A. Rothe, Edmund Tam
  • Publication number: 20190343373
    Abstract: A system for visualizing a tissue region of interest comprises a deployment catheter defining at least one lumen therethrough and a hood projecting distally from the deployment catheter. The hood defines an open area that is in fluid communication with the at least one lumen. The system also comprises a delivery catheter sized to extend through the lumen. The delivery catheter includes a distal portion extendable distally from the deployment catheter and into the open area defined by the hood. The distal portion extends distally from the deployment catheter is articulatable within the open area.
    Type: Application
    Filed: July 26, 2019
    Publication date: November 14, 2019
    Inventors: Vahid Saadat, Ruey-Feng Peh, Chris A. Rothe, Edmund Tam
  • Publication number: 20190314007
    Abstract: An apparatus for inhibiting tissue migration during a procedure comprises a deployment catheter defining at least one lumen therethrough and a non-inflatable hood projecting distally from the deployment catheter and defining an open area. The open area is in fluid communication with the at least one lumen. The apparatus also comprises a visualization element disposed within or along the non-inflatable hood for visualizing tissue adjacent to the open area. The apparatus also comprises a tissue grasping end effector positioned within the open area and configured to temporarily engage the tissue adjacent to the open area such that distal migration of the tissue relative to the barrier or membrane is inhibited.
    Type: Application
    Filed: May 15, 2019
    Publication date: October 17, 2019
    Inventors: Vahid Saadat, Ruey-Feng Peh, Christopher A. Rothe, Edmund A. Tam
  • Patent number: 10441136
    Abstract: A method of treatment comprises intravascularly securing an anchor extending from an anchor member at least partially within a vessel lumen such that blood flows unobstructed through or past the anchor. While the anchor is secured, a distance of the anchor member, between the anchor and a barrier or membrane projecting distally from a deployment catheter, is adjusted such that an open area defined by the barrier or membrane is placed against or adjacent to a portion of a patient tissue. Adjusting the distance of the anchor member comprises moving the deployment catheter distally with respect to the anchor member. The method also comprises displacing blood with a transparent fluid from the open area, and while the anchor is secured, articulating the barrier or membrane circumferentially around the anchor. The method also includes treating the tissue while visualizing through the transparent fluid.
    Type: Grant
    Filed: February 16, 2016
    Date of Patent: October 15, 2019
    Assignee: INTUITIVE SURGICAL OPERATIONS, INC.
    Inventors: Vahid Saadat, Ruey-Feng Peh, Chris A. Rothe, Edmund Tam
  • Publication number: 20190307331
    Abstract: Electrophysiology mapping and visualization systems are described herein where such devices may be used to visualize tissue regions as well as map the electrophysiological activity of the tissue. Such a system may include a deployment catheter and an attached hood deployable into an expanded configuration. In use, the imaging hood is placed against or adjacent to a region of tissue to be imaged in a body lumen that is normally filled with an opaque bodily fluid such as blood. A translucent or transparent fluid, such as saline, can be pumped into the imaging hood until the fluid displaces any blood, thereby leaving a clear region of tissue to be imaged via an imaging element in the deployment catheter. A position of the catheter and/or hood may be tracked and the hood may also be used to detect the electrophysiological activity of the visualized tissue for mapping.
    Type: Application
    Filed: April 15, 2019
    Publication date: October 10, 2019
    Inventors: Vahid Saadat, Ruey-Feng Peh, Edmund A. Tam
  • Patent number: 10390685
    Abstract: A system comprises a deployment catheter defining at least one lumen and a hood projecting distally from the deployment catheter and defining an open area. The open area is in direct fluid communication with the at least one lumen. The system also comprises an elongate channel directly coupled to the hood such that the elongate channel terminates distally into the open area. The elongate channel extends proximally from an outer surface of the hood and is bounded proximally at a proximal pocket surface. The system also comprises an imaging element. The imaging element is sized to pass into the elongated channel at a distal end of the elongate channel. Proximal movement within the elongated channel is restricted by the proximal pocket surface. The system also comprises a control member extending within the elongate channel and through the proximal pocket surface for moving the imaging element through the elongate channel.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: August 27, 2019
    Assignee: INTUITIVE SURGICAL OPERATIONS, INC.
    Inventors: Vahid Saadat, Chris A. Rothe, Ruey-Feng Peh, Edmund A. Tam
  • Patent number: 10368729
    Abstract: A method of inhibiting a flow of a purging fluid from a tissue visualization device comprises positioning an imaging hood attached to a distal end of a flexible elongate shaft in proximity to a tissue region to be visualized The method also comprises introducing the purging fluid into an inflation member suspended within an open area of the imaging hood. The inflation member includes at least one aperture on a proximal portion of the inflation member. The method also comprises inflating the inflation member to a partially inflated state in which the inflation member is circumferentially separated from an inner surface of the hood to form an annular flow path for the purging fluid from the at least one aperture, between the inner surface of the hood and the inflation member, and into fluid communication with an environment external to the hood.
    Type: Grant
    Filed: November 14, 2016
    Date of Patent: August 6, 2019
    Assignee: INTUITIVE SURGICAL OPERATIONS, INC.
    Inventors: David Miller, Vahid Saadat, Zachary J. Malchano, Ruey-Feng Peh, Aseem K. Thakur, Christopher A. Rothe, Edmund Tam
  • Patent number: 10335131
    Abstract: A method of inhibiting tissue migration comprises positioning an open area of a hood against or adjacent to a tissue region. The method also comprises displacing an opaque fluid with a transparent fluid from the open area. The method includes engaging a portion of the tissue region within the open area via an end effector advanced through the open area and which grasps onto the portion. The end effector includes a tapered section, tapered along its entire length, through which a lumen extends. The tapered section includes threads extending from a surface of the tapered section in a direction orthogonal to the longitudinal axis. The tissue region is pierced while displacing the opaque fluid with the transparent fluid through the distal opening of the hood and while maintaining engagement of the portion of the tissue region such that distal movement of the tissue is inhibited.
    Type: Grant
    Filed: October 23, 2007
    Date of Patent: July 2, 2019
    Assignee: INTUITIVE SURGICAL OPERATIONS, INC.
    Inventors: Vahid Saadat, Ruey-Feng Peh, Edmund A. Tam, Chris A. Rothe
  • Patent number: 10278588
    Abstract: A system comprises a catheter and an electromagnetic sensor assembly supported at a distal end of the catheter. The electromagnetic sensor assembly includes a magnetic strut spirally extended away from the distal end of the catheter around an open area distal of the catheter. The system also comprises an imaging element supported at a distal end of the catheter inside the open area. The imaging element acquires an image of the tissue surface region. The system also comprises a processor that receives a position of the electromagnetic sensor assembly and the tissue surface image. The processor maps the position of the electromagnetic sensor assembly and tissue surface image together. The system also comprises a barrier reconfigurable from a low-profile shape to an expanded deployment shape projecting from a distal end of the catheter. The electromagnetic sensor assembly is spirally configured over the barrier.
    Type: Grant
    Filed: December 10, 2014
    Date of Patent: May 7, 2019
    Assignee: INTUITIVE SURGICAL OPERATIONS, INC.
    Inventors: Vahid Saadat, Ruey-Feng Peh, Edmund A. Tam
  • Publication number: 20190083174
    Abstract: A tissue treatment assembly comprising an elongate flexible energy delivery device extending along a longitudinal axis and terminating at a distal opening and a circuit assembly including a plurality of conductors wrapped in a spiral configuration around the elongate flexible energy delivery device.
    Type: Application
    Filed: October 12, 2018
    Publication date: March 21, 2019
    Inventors: Jason Paul Watson, Edmund Tam, Vahid Saadat
  • Publication number: 20190008360
    Abstract: A robotic assembly comprises a deployment catheter including a steerable distal region and further comprises a balloon assembly coupled to the steerable distal region.
    Type: Application
    Filed: August 30, 2018
    Publication date: January 10, 2019
    Inventors: Ruey-Feng Peh, Vahid Saadat, Edmund A. Tam
  • Patent number: 10137836
    Abstract: Vehicle visual systems are disclosed to produce seamless and uniform surround-view images of the vehicle using a number of Ultra Wide-Angle (UWA) lens cameras and optionally HUD systems. A distributive system architecture wherein individual cameras are capable of performing various image transformations allows a flexible and resource efficient image processing scheme.
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: November 27, 2018
    Assignee: GEO SEMICONDUCTOR INC.
    Inventors: Zorawar S. Bassi, Ashkan Alavi-Harati, Thushyanthan Jegatheswaran, Edmund Tam
  • Patent number: 10111705
    Abstract: Electrode placement and connection systems are described which allow for the electrical connection and maintenance of one or more electrodes positioned on a substrate which is subjected to a variety of mechanical stresses. Electrodes may also be formed on flexible circuit assemblies integrated within or along the hood. The circuit assemblies may also provide structural support to the hood during delivery and/or deployment. Such a system may include an imaging hood having an aperture through which transparent fluid is flowed and one or more electrodes positioned along or about the hood. As the hood is configured between a low-profile and opened configuration, these electrodes may remain electrically coupled despite the mechanical stresses subjected to the electrodes and the connections thereto.
    Type: Grant
    Filed: November 11, 2014
    Date of Patent: October 30, 2018
    Assignee: INTUITIVE SURGICAL OPERATIONS, INC.
    Inventors: Jason Paul Watson, Edmund Tam, Vahid Saadat
  • Patent number: 10070772
    Abstract: Precision control systems for tissue visualization and manipulation assemblies are described herein where such devices may utilize a variety of apparatus and methods for facilitating advancement, articulation, control, navigation, etc. of systems which may be used to visualize and/or treat tissue regions. Additionally, methods and devices for enhancing navigation of the device through a patient body are also described.
    Type: Grant
    Filed: May 12, 2009
    Date of Patent: September 11, 2018
    Assignee: Intuitive Surgical Operations, Inc.
    Inventors: Ruey-Feng Peh, Vahid Saadat, Edmund Tam
  • Publication number: 20180228350
    Abstract: A method of visually locating a vessel within a body lumen comprises displacing an opaque fluid with an inflatable member contained within an open area of a barrier or membrane. The method also comprises positioning the inflatable member against or adjacent to a tissue region at a first location and visually assessing the tissue region at the first location through the inflatable member. The method also comprises repositioning the inflatable member against or adjacent to the tissue region at a second location.
    Type: Application
    Filed: April 18, 2018
    Publication date: August 16, 2018
    Inventors: Vahid Saadat, Christopher A. Rothe, Ruey-Feng Peh, Edmund A. Tam