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).
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Patent number: 8417321Abstract: 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: GrantFiled: August 24, 2011Date of Patent: April 9, 2013Assignee: Voyage Medical, IncInventors: Vahid Saadat, Edmund Tam, Chris A. Rothe, David Miller, Ruey-Feng Peh
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Publication number: 20130023731Abstract: 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: ApplicationFiled: June 18, 2012Publication date: January 24, 2013Applicant: VOYAGE MEDICAL, INC.Inventors: Vahid SAADAT, Chris A. ROTHE, Edmund A. TAM, Ruey-Feng PEH
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Patent number: 8308765Abstract: 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: GrantFiled: May 7, 2004Date of Patent: November 13, 2012Assignee: 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
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Patent number: 8235985Abstract: 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: GrantFiled: September 11, 2008Date of Patent: August 7, 2012Assignee: Voyage Medical, Inc.Inventors: Vahid Saadat, Ruey-Feng Peh, Zachary J. Malchano, Chris A. Rothe
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Patent number: 8221310Abstract: 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: GrantFiled: August 30, 2007Date of Patent: July 17, 2012Assignee: Voyage Medical, Inc.Inventors: Vahid Saadat, Chris A. Rothe, Edmund Tam, Ruey-Feng Peh
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Publication number: 20120059394Abstract: 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: ApplicationFiled: February 17, 2010Publication date: March 8, 2012Applicant: THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITYInventors: Jacob S. Brenner, Gregory A. Magee, Ruey Feng Peh, Erika I. Palmer
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Patent number: 8131350Abstract: 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: GrantFiled: December 20, 2007Date of Patent: March 6, 2012Assignee: Voyage Medical, Inc.Inventors: Vahid A. Saadat, Chris A. Rothe, Ruey-Feng Peh, Edmund Tam
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Publication number: 20120004577Abstract: 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: ApplicationFiled: September 13, 2011Publication date: January 5, 2012Applicant: VOYAGE MEDICAL, INC.Inventors: Vahid SAADAT, Ruey-Feng PEH, Edmund A. TAM, Amir ABOLFATHI, Chris A. ROTHE
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Patent number: 8087413Abstract: 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: GrantFiled: January 14, 2005Date of Patent: January 3, 2012Assignee: USGI Medical Inc.Inventors: Vahid Saadat, Ruey-Feng Peh, Richard C. Ewers, Eugene G. Chen
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Publication number: 20110306833Abstract: 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: ApplicationFiled: August 24, 2011Publication date: December 15, 2011Applicant: Voyage Medical, Inc.Inventors: Vahid SAADAT, Edmund TAM, Chris A. ROTHE, David MILLER, Ruey-Feng PEH
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Patent number: 8078266Abstract: 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: GrantFiled: February 5, 2008Date of Patent: December 13, 2011Assignee: Voyage Medical, Inc.Inventors: Vahid Saadat, Edmund Tam, Chris A. Rothe, David Miller, Ruey-Feng Peh
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Patent number: 8057511Abstract: 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: GrantFiled: May 7, 2004Date of Patent: November 15, 2011Assignee: USGI Medical, Inc.Inventors: Jesus Flores, Richard C. Ewers, Tracy D. Maahs, Alex Khairkhahan, Ruey-Feng Peh, Vahid Saadat
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Patent number: 8050746Abstract: 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: GrantFiled: July 10, 2007Date of Patent: November 1, 2011Assignee: Voyage Medical, Inc.Inventors: Vahid Saadat, Ruey-Feng Peh, Edmund Tam, Amir A. Abolfathi, Chris A. Rothe
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Publication number: 20110196392Abstract: 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: ApplicationFiled: April 15, 2011Publication date: August 11, 2011Applicant: USGI MEDICAL, INC.Inventors: Vahid SAADAT, Ruey-Feng PEH
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Patent number: 7931661Abstract: 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: GrantFiled: August 11, 2004Date of Patent: April 26, 2011Assignee: USGI Medical, Inc.Inventors: Vahid Saadat, Ruey-Feng Peh
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Patent number: 7736378Abstract: 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: GrantFiled: May 7, 2004Date of Patent: June 15, 2010Assignee: USGI Medical, Inc.Inventors: Tracy D. Maahs, Richard C. Ewers, Jesus Flores, Alexander Khairkhahan, Ruey-Feng Peh, Vahid Saadat, Cang C. Lam
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Publication number: 20100130836Abstract: 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: ApplicationFiled: November 13, 2009Publication date: May 27, 2010Applicant: Voyage Medical, Inc.Inventors: Zachary J. MALCHANO, Ruey-Feng PEH, Vahid SAADAT, Ted J. COOPER, David MILLER, Veerappan SWAMINATHAN
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Patent number: 7703459Abstract: 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: GrantFiled: September 29, 2004Date of Patent: April 27, 2010Assignee: USGI Medical, Inc.Inventors: Vahid Saadat, Chris Rothe, Ruey-Feng Peh, Richard C. Ewers
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Publication number: 20100010311Abstract: 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: ApplicationFiled: July 8, 2009Publication date: January 14, 2010Applicant: Voyage Medical, Inc.Inventors: David MILLER, Vahid SAADAT, Zachary J. MALCHANO, Ruey-Feng PEH, Aseem K. THAKUR, Chris A. ROTHE, Edmund TAM
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Publication number: 20100004633Abstract: 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: ApplicationFiled: July 7, 2009Publication date: January 7, 2010Applicant: Voyage Medical, Inc.Inventors: Chris A. ROTHE, Juan Diego PEREA, David MILLER, Vahid SAADAT, Zachary J. MALCHANO, Ruey-Feng PEH