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).

  • Publication number: 20100010311
    Abstract: Methods and apparatus for efficient purging from an imaging hood are described which facilitate the visualization of tissue regions through a clear fluid. Such a system may include an imaging hood having one or more layers covering the distal opening and defines one or more apertures which control the infusion and controlled retention of the clearing fluid into the hood. In this manner, the amount of clearing fluid may be limited and the clarity of the imaging of the underlying tissue through the fluid within the hood may be maintained for relatively longer periods of time by inhibiting, delaying, or preventing the infusion of surrounding blood into the viewing field. The aperture size may be controlled to decrease or increase through selective inflation of the membrane or other mechanisms.
    Type: Application
    Filed: July 8, 2009
    Publication date: January 14, 2010
    Applicant: Voyage Medical, Inc.
    Inventors: David MILLER, Vahid SAADAT, Zachary J. MALCHANO, Ruey-Feng PEH, Aseem K. THAKUR, Chris A. ROTHE, Edmund TAM
  • Publication number: 20100004633
    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: Application
    Filed: July 7, 2009
    Publication date: January 7, 2010
    Applicant: Voyage Medical, Inc.
    Inventors: Chris A. ROTHE, Juan Diego PEREA, David MILLER, Vahid SAADAT, Zachary J. MALCHANO, Ruey-Feng PEH
  • Publication number: 20090326572
    Abstract: Apparatus and methods for rapid tissue crossing are described utilizing a device to penetrate and rapidly cross a tissue layer in a patient body without the need to withdraw the tissue visualization catheter out of the patient body to be replaced with a separate dilator. The distal end of a dilator sheath, within which the visualization device is positionable, may be collapsible to form a conical dilator. Upon the placement of the tip of the dilator at the site of transseptal puncture, the conical dilator may be advanced distally through the puncture to enlarge the opening. With passage of the dilator sheath through the opening, a visualization hood may be advanced and deployed through the conical dilator which opens from its conical shape to allow the passage of the hood or other instruments therethrough.
    Type: Application
    Filed: June 11, 2009
    Publication date: December 31, 2009
    Inventors: Ruey-Feng PEH, David MILLER, Zachary J. MALCHANO, Vahid SAADAT
  • Publication number: 20090299363
    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: Application
    Filed: December 20, 2007
    Publication date: December 3, 2009
    Inventors: Vahid Saadat, Chris A. Rothe, Ruey-Feng Peh, Edmund A. Tam
  • Publication number: 20090275799
    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: Application
    Filed: December 20, 2007
    Publication date: November 5, 2009
    Applicant: Voyage Medical, Inc.
    Inventors: Vahid SAADAT, Chris A. Rothe, Ruey-Feng Peh, Edmund Tam
  • Publication number: 20090275842
    Abstract: Systems for the stabilization of visualization catheters are described herein which facilitate the deployment and retraction of an imaging hood from a catheter. Such systems may include a deployment catheter and an imaging hood having one or more structural elements which may be integrated or advanced into the hood independently of the hood itself. Moreover, additional features such as rapid exchange ports may be integrated along the hood or along the catheter proximal to the hood to facilitate intravascular procedures and treatments.
    Type: Application
    Filed: December 20, 2007
    Publication date: November 5, 2009
    Inventors: Vahid SAADAT, Chris A. ROTHE, Ruey-Feng PEH, Edmund A. TAM
  • Publication number: 20090227999
    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: Application
    Filed: May 14, 2009
    Publication date: September 10, 2009
    Applicant: VOYAGE MEDICAL, INC.
    Inventors: N. Parker Willis, Zachary J. Malchano, Chris A. Rothe, Vahid Saadat, Ruey-Feng Peh, David Miller, Edmund Tam
  • Publication number: 20090221871
    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 visual and/or treat tissue regions. Additionally, methods and devices for enhancing navigation of the device through a patient body are also described.
    Type: Application
    Filed: May 12, 2009
    Publication date: September 3, 2009
    Applicant: VOYAGE MEDICAL, INC.
    Inventors: Ruey-Feng PEH, Vahid SAADAT, Edmund A. TAM
  • Publication number: 20090203962
    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: February 6, 2009
    Publication date: August 13, 2009
    Applicant: VOYAGE MEDICAL, INC.
    Inventors: David MILLER, Vahid SAADAT, Ruey-Feng PEH
  • Publication number: 20090187074
    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: Application
    Filed: January 16, 2009
    Publication date: July 23, 2009
    Applicant: NIDUS MEDICAL, LLC
    Inventors: Vahid SAADAT, Ruey-Feng PEH, Edmund TAM
  • Publication number: 20090143640
    Abstract: Combination imaging and treatment assemblies are described herein which may utilize a deployment catheter in combination with an endoscopic system. The combined system comprises an open architecture to modularly incorporate any number of imaging devices (such as optical fiber, CMOS or CCD endoscopes) to provide high resolution optical images of tissue within an opaque environment. Additional variations may include an imaging hood or balloon member incorporated upon an endoscope or advanced through an endoscope working channel to visualize and treat tissue through blood.
    Type: Application
    Filed: November 25, 2008
    Publication date: June 4, 2009
    Applicant: Voyage Medical, Inc.
    Inventors: Vahid SAADAT, Ruey-Feng PEH, Zachary J. MALCHANO, David MILLER, Chris A. ROTHE, Juan Diego PEREA
  • Publication number: 20090125022
    Abstract: Visualization and ablation system variations are described which utilize various tissue ablation arrangements. Such assemblies are configured to facilitate the application of energy delivery, such as RF ablation, to an underlying target tissue for treatment in a controlled manner while directly visualizing the tissue during the bipolar ablation process.
    Type: Application
    Filed: November 10, 2008
    Publication date: May 14, 2009
    Applicant: Voyage Medical, Inc.
    Inventors: Vahid SAADAT, Zachary J. MALCHANO, David MILLER, Ruey-Feng PEH
  • Publication number: 20090076498
    Abstract: Visualization and ablation system variations are described which utilize various tissue ablation arrangements. Such assemblies are configured to facilitate the application of bipolar energy delivery, such as RF ablation, to an underlying target tissue for treatment in a controlled manner while directly visualizing the tissue during the bipolar ablation process.
    Type: Application
    Filed: September 11, 2008
    Publication date: March 19, 2009
    Applicant: VOYAGE MEDICAL, INC.
    Inventors: Vahid SAADAT, Ruey Feng PEH, Zachary J. MALCHANO, Chris A. ROTHE
  • Publication number: 20090062790
    Abstract: Direct visualization bipolar ablation systems are described which utilize bipolar electrode arrangements. Such assemblies are configured to facilitate the application of bipolar energy delivery, such as RF ablation, to an underlying target tissue for treatment in a controlled manner while directly visualizing the tissue during the bipolar ablation process.
    Type: Application
    Filed: August 29, 2008
    Publication date: March 5, 2009
    Applicant: Voyage Medical, Inc.
    Inventors: Zachary J. MALCHANO, Ruey-Feng PEH, David MILLER, Edmund TAM, Vahid SAADAT, Aseem K. THAKUR
  • Publication number: 20090054803
    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: August 31, 2007
    Publication date: February 26, 2009
    Inventors: Vahid Saadat, Ruey-Feng Peh, Edmund A. Tam
  • Publication number: 20090030412
    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: Application
    Filed: May 9, 2008
    Publication date: January 29, 2009
    Inventors: N. Parker WILLIS, Zachary J. MALCHANO, Chris A. ROTHE, Vahid SAADAT, Ruey-Feng PEH, David MILLER, Edmund TAM
  • Publication number: 20090030276
    Abstract: Tissue visualization catheters with imaging systems integrated within the imaging catheter system are described. The tissue-imaging apparatus relates to devices and/or methods to provide visualization of tissue regions within a body lumen such as a heart, which is filled with blood flowing dynamically therethrough. High-resolution images can be obtained by miniaturizing and integrating solid state cameras into the tissue visualization catheter in a number of different off-axis configurations. One or more light sources can also be optionally integrated with the solid state imagers to illuminate the tissue from different angles.
    Type: Application
    Filed: July 25, 2008
    Publication date: January 29, 2009
    Applicant: Voyage Medical, Inc.
    Inventors: Vahid SAADAT, Ruey-Feng PEH, Zachary J. MALCHANO
  • Publication number: 20080281293
    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: May 8, 2008
    Publication date: November 13, 2008
    Applicant: Voyage Medical, Inc.
    Inventors: Ruey-Feng PEH, Vahid SAADAT, Chris A. ROTHE
  • Publication number: 20080275300
    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: Application
    Filed: April 24, 2008
    Publication date: November 6, 2008
    Applicant: Voyage Medical, Inc.
    Inventors: Chris A. ROTHE, David MILLER, Vahid SAADAT, Ruey-Feng PEH, Edmund TAM
  • Publication number: 20080214889
    Abstract: Methods and apparatus for preventing tissue migration or tissue “tenting” during transseptal access procedures are described. The underlying tissue wall may be temporarily engaged via any number of mechanisms, e.g., engaging teeth or projections, threaded needle, vacuum, etc., and one or more instruments may be passed through the tissue wall while maintaining engagement with the tissue to provide a counter-traction force. The procedure may be accomplished while under direct visualization within an imaging hood placed against the tissue surface and purged of blood.
    Type: Application
    Filed: October 23, 2007
    Publication date: September 4, 2008
    Applicant: Voyage Medical, Inc.
    Inventors: Vahid Saadat, Ruey-Feng Peh, Edmund A. Tam, Chris A. Rothe