Patents by Inventor Ruey-Feng Peh

Ruey-Feng Peh 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: 9232947
    Abstract: Devices and methods for treatment of prolapsed hemorrhoidal arteries is disclosed. The devices can identify the hemorrhoid and ligate the artery without causing significant pain or distension of the rectum. The artery can be identified with ultrasound. The ligation can be performed using energy and/or mechanical structures, such as clips or rubber bands.
    Type: Grant
    Filed: February 17, 2010
    Date of Patent: January 12, 2016
    Assignee: THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY
    Inventors: Jacob S. Brenner, Gregory A. Magee, Ruey Feng Peh, Erika I. Palmer
  • Patent number: 9226648
    Abstract: Off-axis visualization systems are described herein which facilitate the deployment, visualization, and retraction of an imaging element from a catheter. Such a system may include a deployment catheter and an attached imaging hood deployable into an expanded configuration as well as an imaging element, such as a CCD or CMOS imager, which may be deployed from a low profile configuration into a position which is off-axis relative to a longitudinal axis of the deployment catheter and/or imaging hood.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: January 5, 2016
    Assignee: Intuitive Surgical Operations, Inc.
    Inventors: Vahid Saadat, Chris A. Rothe, Ruey-Feng Peh, Edmund Tam
  • Publication number: 20150366440
    Abstract: A medical manipulation assembly comprises a sheath steerable in response to rotational movement of a sheath steering mechanism. The assembly also comprises a catheter extendable through the sheath. The catheter is steerable in response to rotational movement of a catheter steering mechanism. The sheath and catheter are independently steerable. The assembly also comprises a set of control wires. At least one of the sheath or the catheter includes a plurality of lumens with at least two of the plurality of lumens each sized for passage of one of the control wires of the set of control wires. The steerable catheter includes a working channel sized to receive a visualization instrument therethrough.
    Type: Application
    Filed: September 2, 2015
    Publication date: December 24, 2015
    Inventors: Chris A. Rothe, David Miller, Vahid Saadat, Ruey-Feng Peh, Edmund Tam
  • Patent number: 9192287
    Abstract: Tissue visualization devices and variations thereof are described herein where such devices may utilize a variety of methods for facilitating clearing of the device of opaque bodily fluids and sealing between the device and the underlying tissue surface. Additionally, methods and devices for enhancing navigation of the device through a patient body are also described.
    Type: Grant
    Filed: June 18, 2012
    Date of Patent: November 24, 2015
    Assignee: Intuitive Surgical Operations, Inc.
    Inventors: Vahid Saadat, Chris A. Rothe, Edmund Tam, Ruey-Feng Peh
  • Publication number: 20150314107
    Abstract: A medical manipulation assembly comprises an elongated distal steerable portion with a distal working channel extending through the elongated distal steerable portion. The assembly also comprises an elongated proximal steerable portion arranged proximally of the elongated distal assembly portion. A proximal working channel extends through the elongated proximal steerable portion. The assembly also comprises a distal steering mechanism to bend the distal steerable portion in response to movement of the distal steering mechanism. The assembly also comprises a proximal steering mechanism to bend the proximal steerable portion, independently of the distal steerable portion, in response to rotational movement of the proximal steering mechanism. The assembly also comprises distal pullwire(s) extending between the elongated distal steerable portion and the distal steering mechanism and proximal pullwire(s) extending between the elongated proximal steerable portion and the proximal steering mechanism.
    Type: Application
    Filed: July 9, 2015
    Publication date: November 5, 2015
    Inventors: Chris A. Rothe, Juan Diego Perea, David Miller, Vahid Saadat, Zachary J. Malchano, Ruey-Feng Peh
  • Patent number: 9155452
    Abstract: Complex shape steerable tissue visualization and manipulation catheters and their methods of use of disclosed herein. The deployment catheter may be articulated utilizing various steering mechanisms to adjust a position of a visualization hood or membrane through which underlying tissue may be visualized.
    Type: Grant
    Filed: April 24, 2008
    Date of Patent: October 13, 2015
    Assignee: Intuitive Surgical Operations, Inc.
    Inventors: Chris A. Rothe, David Miller, Vahid Saadat, Ruey-Feng Peh, Edmund Tam
  • Patent number: 9155587
    Abstract: Visual electrode ablation systems are described herein which include a deployment catheter and an attached imaging 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. An electric current may be passed through the fluid such that it passes directly to the tissue region being imaged and the electrical energy is conducted through the fluid without the need for a separate ablation probe or instrument to ablate the tissue being viewed.
    Type: Grant
    Filed: May 14, 2009
    Date of Patent: October 13, 2015
    Assignee: INTUITIVE SURGICAL OPERATIONS, INC.
    Inventors: N. Parker Willis, Zachary J. Malchano, Chris A. Rothe, Vahid Saadat, Ruey-Feng Peh, David Miller, Edmund Tam
  • Patent number: 9101735
    Abstract: Catheter control systems which facilitate the tracking of an angle of deflection of a catheter distal end can be used for any number of procedures where catheter orientation relative to the body is desirable, e.g., in transseptal access procedures where an accurate angle of puncture of the septal wall is desirable. Such control systems may comprise a steerable handle which is oriented relative to the catheter steerable section to provide for consistent catheter articulation upon corresponding manipulation of the steering ring. Another variation may utilize an orientation indicator to track the deflectable distal end. For instance, an orientation marker as visualized through an imaging hood on the distal end may correspond to identical orientation markers on the control handle such that articulation of a steering mechanism in a direction relative to the orientation markers deflects the catheter distal end in a corresponding direction relative to the visualized orientation markers.
    Type: Grant
    Filed: July 7, 2009
    Date of Patent: August 11, 2015
    Assignee: INTUITIVE SURGICAL OPERATIONS, INC.
    Inventors: Chris A. Rothe, Juan Diego Perea, David Miller, Vahid Saadat, Zachary J. Malchano, Ruey-Feng Peh
  • Publication number: 20150190587
    Abstract: According to various embodiments, a method and system to obtain access to a blood vessel underneath a skin layer that may preserve lifespan of the blood vessel and reduce executional skill variability may be provided. The method includes placing a guiding portion between the blood vessel and the skin layer; and configuring the guiding portion to receive and guide a needle to reach the same location of the blood vessel repeatedly and consistently; and forming a resultant scarred track between the blood vessel and the skin layer as the guiding portion is resorbed over time. The system includes a vascular access device configurable to first possess strength to penetrate through a tissue layer, subsequently possess flexibility to conform to the surrounding tissue beneath the tissue layer; and a guiding portion which may be resorbable, wherein the inlet includes a larger diameter compared to the outlet.
    Type: Application
    Filed: July 26, 2013
    Publication date: July 9, 2015
    Applicant: Agency for Science, Technology and Research
    Inventors: Ruey Feng Peh, Jing Ming Chew, Wei Ling Fiona Loke, Hsien Ts'ung Tay
  • Publication number: 20150094577
    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: December 10, 2014
    Publication date: April 2, 2015
    Inventors: Vahid Saadat, Ruey-Feng Peh, Edmund A. Tam
  • Publication number: 20150025614
    Abstract: Stent delivery under direct visualization utilizing an imaging hood is described herein. A stent may be delivered and placed in or around lesions, e.g., ostial lesions, through a delivery catheter while being directly visualized via an imaging hood. A pre-delivery assessment probe may also be advanced to the desired site for accurate placement of the stent.
    Type: Application
    Filed: September 18, 2014
    Publication date: January 22, 2015
    Inventors: David Miller, Vahid Saadat, Ruey-Feng Peh
  • Patent number: 8934962
    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: Grant
    Filed: August 31, 2007
    Date of Patent: January 13, 2015
    Assignee: Intuitive Surgical Operations, Inc.
    Inventors: Vahid Saadat, Ruey-Feng Peh, Edmund A. Tam
  • Publication number: 20140316406
    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: Application
    Filed: March 26, 2014
    Publication date: October 23, 2014
    Applicant: Intuitive Surgical Operations, Inc.
    Inventors: N. Parker WILLIS, Zachary J. Malchano, Chris A. Rothe, Vahid Saadat, Ruey-Feng Peh, David Miller, Edmond Tam
  • Patent number: 8858609
    Abstract: Stent delivery under direct visualization utilizing an imaging hood is described herein. A stent may be delivered and placed in or around lesions, e.g., ostial lesions, through a delivery catheter while being directly visualized via an imaging hood. A pre-delivery assessment probe may also be advanced to the desired site for accurate placement of the stent.
    Type: Grant
    Filed: February 6, 2009
    Date of Patent: October 14, 2014
    Assignee: Intuitive Surgical Operations, Inc.
    Inventors: David Miller, Vahid Saadat, Ruey-Feng Peh
  • Patent number: 8758229
    Abstract: Axial visualization systems which utilize axially aligned imaging instruments for visualizing through an imaging hood purged of blood via a transparent fluid are described where an imaging element extending from a support shaft may be aligned within a working lumen defined through a deployment catheter. The imaging element may be positioned distal to the hood in its collapsed state and within the hood in its expanded state. The imaging element may be configured to seat itself securely within the catheter or to angle itself to adjust the viewing angle. Additionally, a disposable visualization sheath having a transparent lens may also be utilized to house an imaging instrument therein.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: June 24, 2014
    Assignee: Intuitive Surgical Operations, Inc.
    Inventors: Vahid Saadat, Chris A. Rothe, Ruey-Feng Peh, Edmund Tam
  • Patent number: 8709008
    Abstract: Visual electrode ablation systems are described herein which include a deployment catheter and an attached imaging 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. An electric current may be passed through the fluid such that it passes directly to the tissue region being imaged and the electrical energy is conducted through the fluid without the need for a separate ablation probe or instrument to ablate the tissue being viewed.
    Type: Grant
    Filed: May 9, 2008
    Date of Patent: April 29, 2014
    Assignee: Intuitive Surgical Operations, Inc.
    Inventors: N. Parker Willis, Zachary J. Malchano, Chris A. Rothe, Vahid Saadat, Ruey-Feng Peh, David Miller, Edmund Tam
  • Publication number: 20140114129
    Abstract: Complex steerable catheter visualization and tissue manipulation systems and their methods of use are disclosed herein. The deployment catheter is articulated using various steering mechanisms. Tissue visualization is accomplished from the visualization hood at the distal end of the deployment catheter, the hood having an ability to expand and other features to facilitate visualization and articulation at the tissue surface.
    Type: Application
    Filed: January 7, 2014
    Publication date: April 24, 2014
    Applicant: Intuitive Surgical Operations, Inc.
    Inventors: Ruey-Feng Peh, Vahid Saadat, Christopher A. Rothe
  • Patent number: 8657805
    Abstract: Complex steerable catheter visualization and tissue manipulation systems and their methods of use are disclosed herein. The deployment catheter is articulated using various steering mechanisms. Tissue visualization is accomplished from the visualization hood at the distal end of the deployment catheter, the hood having an ability to expand and other features to facilitate visualization and articulation at the tissue surface.
    Type: Grant
    Filed: May 8, 2008
    Date of Patent: February 25, 2014
    Assignee: Intuitive Surgical Operations, Inc.
    Inventors: Ruey-Feng Peh, Vahid Saadat, Chris A. Rothe
  • Patent number: 8573226
    Abstract: Methods and apparatus are provided for diagnosing and treating digestive or other organs (as well as other parts of the body) endoluminally and transluminally, via instruments passed into the GI tract per-orally and/or per-anally. The instruments may, for example, pass transluminally out of the stomach and/or the colon through a breach formed therein in order to conduct diagnostic or therapeutic procedures, such as gastroenterostomy.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: November 5, 2013
    Assignee: USGI Medical, Inc.
    Inventors: Vahid Saadat, Ruey-Feng Peh
  • Patent number: 8460181
    Abstract: Epicardial access and treatment systems are described herein where such devices may utilize multiple expanding frame members coupled to a flexible or rigid deployment catheter shaft. The multiple frame members may extend distally to collapse into a low-profile configuration and may further expand or open radially to create a working or surgical field under direct visualization and defined by the frame members and surrounding membrane while retracting any surrounding tissue. Moreover, the distal ends of each frame member may be tapered such that the frame members may close tightly relative to one another forming an atraumatic end. Any number of therapeutic tools can be passed through the catheter for performing any number of procedures on the tissue.
    Type: Grant
    Filed: January 16, 2009
    Date of Patent: June 11, 2013
    Assignee: Nidus Medical, LLC
    Inventors: Vahid Saadat, Ruey-Feng Peh, Edmund Tam