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: 20130131448
    Abstract: Flow reduction hood systems 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: January 16, 2013
    Publication date: May 23, 2013
    Applicant: VOYAGE MEDICAL, INC.
    Inventors: Vahid SAADAT, Edmund TAM, Chris A. ROTHE, David MILLER, Ruey-Feng PEH
  • Patent number: 8419613
    Abstract: Tissue visualization device having a fluid barrier is described herein where an imaging hood is temporarily sealed against a region of tissue to be treated while under direct visualization. Such a system may include a deployment catheter and an attached imaging hood deployable into an expanded configuration. The imaging hood is placed against or adjacent to the tissue to be imaged in a body lumen that is normally filled with an opaque bodily fluid such as blood. A field of view of the imaging element can be expanded and the blood can also be purged in part by inflating a balloon beyond the imaging hood where the balloon is integrally formed along an interior surface of the hood.
    Type: Grant
    Filed: September 13, 2011
    Date of Patent: April 16, 2013
    Assignee: Voyage Medical, Inc.
    Inventors: Vahid Saadat, Ruey-Feng Peh, Edmund Tam, Amir A. Abolfathi, Chris A. Rothe
  • Patent number: 8417321
    Abstract: Flow reduction hood systems 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: Grant
    Filed: August 24, 2011
    Date of Patent: April 9, 2013
    Assignee: Voyage Medical, Inc
    Inventors: Vahid Saadat, Edmund Tam, Chris A. Rothe, David Miller, Ruey-Feng Peh
  • Publication number: 20130023731
    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: Application
    Filed: June 18, 2012
    Publication date: January 24, 2013
    Applicant: VOYAGE MEDICAL, INC.
    Inventors: Vahid SAADAT, Chris A. ROTHE, Edmund A. TAM, Ruey-Feng PEH
  • Patent number: 8308765
    Abstract: Apparatus and methods for positioning and securing anchors are adapted to be delivered and implanted into or upon tissue, particularly tissue within the gastrointestinal system of a patient. The anchor is adapted to slide uni-directionally over suture such that a tissue plication may be cinched between anchors. A locking mechanism either within the anchor itself of positioned proximally of the anchor may allow for the uni-directional translation while enabling the anchor to be locked onto the suture if the anchor is pulled, pushed, or otherwise urged in the opposite direction along the suture. This unidirectional anchor locking mechanism facilitates the cinching of the tissue plication between the anchors and it may be utilized in one or several anchors in cinching a tissue fold.
    Type: Grant
    Filed: May 7, 2004
    Date of Patent: November 13, 2012
    Assignee: USGI Medical, Inc.
    Inventors: Vahid Saadat, Tracy D. Maahs, Richard C. Ewers, Marvin C. Elmers, Jesus Flores, Alex Khairkhahan, Ruey-Feng Peh, Cang C. Lam
  • Patent number: 8235985
    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: Grant
    Filed: September 11, 2008
    Date of Patent: August 7, 2012
    Assignee: Voyage Medical, Inc.
    Inventors: Vahid Saadat, Ruey-Feng Peh, Zachary J. Malchano, Chris A. Rothe
  • Patent number: 8221310
    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: August 30, 2007
    Date of Patent: July 17, 2012
    Assignee: Voyage Medical, Inc.
    Inventors: Vahid Saadat, Chris A. Rothe, Edmund Tam, Ruey-Feng Peh
  • Publication number: 20120059394
    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: Application
    Filed: February 17, 2010
    Publication date: March 8, 2012
    Applicant: 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: 8131350
    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: Grant
    Filed: December 20, 2007
    Date of Patent: March 6, 2012
    Assignee: Voyage Medical, Inc.
    Inventors: Vahid A. Saadat, Chris A. Rothe, Ruey-Feng Peh, Edmund Tam
  • Publication number: 20120004577
    Abstract: Tissue visualization device and method variations are described herein where an imaging hood is temporarily sealed against a region of tissue to be treated while under direct visualization. Such a system may include a deployment catheter and an attached imaging hood deployable into an expanded configuration. The imaging hood is placed against or adjacent to the 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 is pumped into the hood until the fluid displaces any blood leaving a clear region of tissue to be imaged via an imaging element. Temporary sealing against the tissue can be achieved in a number of ways such as circumferential balloons inflatable within the hood or other sealing techniques. A field of view of the imaging element can be expanded by inflating the balloon beyond the imaging hood.
    Type: Application
    Filed: September 13, 2011
    Publication date: January 5, 2012
    Applicant: VOYAGE MEDICAL, INC.
    Inventors: Vahid SAADAT, Ruey-Feng PEH, Edmund A. TAM, Amir ABOLFATHI, Chris A. ROTHE
  • Patent number: 8087413
    Abstract: The attenuation or isolation of environmental parameters on a gastric lumen is described herein. Once tissue plications are formed into a gastric lumen or sleeve within a stomach, the newly formed lumen is subjected to a multitude of fluctuating stresses or pressure from food or fluids passing therethrough, from naturally-occurring contractions, and/or from changes in pH levels from caustic stomach acids and hormones. The tissue interface between these plications can be isolated from such environmental fluctuations, or the fluctuations can be attenuated, by a number of methods. One example is to place a gastric stent or sleeve within the newly formed lumen. Another example is to utilize multiple rows of anchors, clips, or sutures along the interface. Alternatively, bio-adhesives can be dispensed to buttress the tissue interface. In another variation, the tissue can be approximated in different configurations which effectively reduce or isolate the adhered tissue region.
    Type: Grant
    Filed: January 14, 2005
    Date of Patent: January 3, 2012
    Assignee: USGI Medical Inc.
    Inventors: Vahid Saadat, Ruey-Feng Peh, Richard C. Ewers, Eugene G. Chen
  • Publication number: 20110306833
    Abstract: Flow reduction hood systems 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: August 24, 2011
    Publication date: December 15, 2011
    Applicant: Voyage Medical, Inc.
    Inventors: Vahid SAADAT, Edmund TAM, Chris A. ROTHE, David MILLER, Ruey-Feng PEH
  • Patent number: 8078266
    Abstract: Flow reduction hood systems 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: Grant
    Filed: February 5, 2008
    Date of Patent: December 13, 2011
    Assignee: Voyage Medical, Inc.
    Inventors: Vahid Saadat, Edmund Tam, Chris A. Rothe, David Miller, Ruey-Feng Peh
  • Patent number: 8057511
    Abstract: Apparatus and methods for positioning and securing anchors are disclosed herein. The anchors are adapted to be delivered and implanted into or upon tissue, particularly tissue within the gastrointestinal system of a patient. The anchor is adapted to slide uni-directionally over suture such that a tissue plication may be cinched between anchors. A locking mechanism either within the anchor itself of positioned proximally of the anchor may allow for the uni-directional translation while enabling the anchor to be locked onto the suture if the anchor is pulled, pushed, or otherwise urged in the opposite direction along the suture. This uni-directional anchor locking mechanism facilitates the cinching of the tissue plication between the anchors and it may be utilized in one or several anchors in cinching a tissue fold.
    Type: Grant
    Filed: May 7, 2004
    Date of Patent: November 15, 2011
    Assignee: USGI Medical, Inc.
    Inventors: Jesus Flores, Richard C. Ewers, Tracy D. Maahs, Alex Khairkhahan, Ruey-Feng Peh, Vahid Saadat
  • Patent number: 8050746
    Abstract: Tissue visualization device and method variations are described herein where an imaging hood is temporarily sealed against a region of tissue to be treated while under direct visualization. Such a system may include a deployment catheter and an attached imaging hood deployable into an expanded configuration. The imaging hood is placed against or adjacent to the 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 is pumped into the hood until the fluid displaces any blood leaving a clear region of tissue to be imaged via an imaging element. Temporary sealing against the tissue can be achieved in a number of ways such as circumferential balloons inflatable within the hood or other sealing techniques. A field of view of the imaging element can be expanded by inflating the balloon beyond the imaging hood.
    Type: Grant
    Filed: July 10, 2007
    Date of Patent: November 1, 2011
    Assignee: Voyage Medical, Inc.
    Inventors: Vahid Saadat, Ruey-Feng Peh, Edmund Tam, Amir A. Abolfathi, Chris A. Rothe
  • Publication number: 20110196392
    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: Application
    Filed: April 15, 2011
    Publication date: August 11, 2011
    Applicant: USGI MEDICAL, INC.
    Inventors: Vahid SAADAT, Ruey-Feng PEH
  • Patent number: 7931661
    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: August 11, 2004
    Date of Patent: April 26, 2011
    Assignee: USGI Medical, Inc.
    Inventors: Vahid Saadat, Ruey-Feng Peh
  • Patent number: 7736378
    Abstract: Apparatus and methods for positioning and securing anchors are disclosed herein. The anchors are adapted to be delivered and implanted into or upon tissue, particularly tissue within the gastrointestinal system of a patient. The anchor is adapted to slide uni-directionally over suture such that a tissue plication may be cinched between anchors. A locking mechanism either within the anchor itself of positioned proximally of the anchor may allow for the uni-directional translation while enabling the anchor to be locked onto the suture if the anchor is pulled, pushed, or otherwise urged in the opposite direction along the suture. This uni-directional anchor locking mechanism facilitates the cinching of the tissue plication between the anchors and it may be utilized in one or several anchors in cinching a tissue fold.
    Type: Grant
    Filed: May 7, 2004
    Date of Patent: June 15, 2010
    Assignee: USGI Medical, Inc.
    Inventors: Tracy D. Maahs, Richard C. Ewers, Jesus Flores, Alexander Khairkhahan, Ruey-Feng Peh, Vahid Saadat, Cang C. Lam
  • Publication number: 20100130836
    Abstract: Image processing systems are described which utilize various methods and processing algorithms for enhancing or facilitating visual detection and/or sensing modalities for images captured in vivo by an intravascular visualization and treatment catheter. Such assemblies are configured to deliver energy, such as RF ablation, to an underlying target tissue for treatment in a controlled manner while directly visualizing the tissue during the ablation process.
    Type: Application
    Filed: November 13, 2009
    Publication date: May 27, 2010
    Applicant: Voyage Medical, Inc.
    Inventors: Zachary J. MALCHANO, Ruey-Feng PEH, Vahid SAADAT, Ted J. COOPER, David MILLER, Veerappan SWAMINATHAN
  • Patent number: 7703459
    Abstract: Apparatus and methods are provided for mapping out endoluminal gastrointestinal surgery, including endoluminal gastric reduction. Mapping is achieved by locally marking the interior of the gastrointestinal lumen at specified locations. In some variations, mucosectomy and/or mucosal ablation are performed to map out endoluminal GI surgery, to facilitate direct endoluminal engagement of underlying muscularis tissue and/or to initiate a wound healing response. Specialized apparatus may be provided to achieve desired spacing and/or positioning of tissue markings, as well as to actually form the markings. Methods of using apparatus of the present invention are provided.
    Type: Grant
    Filed: September 29, 2004
    Date of Patent: April 27, 2010
    Assignee: USGI Medical, Inc.
    Inventors: Vahid Saadat, Chris Rothe, Ruey-Feng Peh, Richard C. Ewers