Patents by Inventor Cang C. Lam

Cang C. Lam 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: 11045341
    Abstract: Apparatus for manipulating and securing tissue are described herein. In creating tissue folds within the body of a patient, a tissue manipulation assembly may generally have an elongate tubular member, an engagement member slidably disposed through the tubular member and a distal end adapted to engage tissue via a helical member, tissue stabilizing members positioned at the tubular member distal end which are adapted to stabilize tissue therebetween, and a delivery tube pivotable about the tissue stabilizer. The stabilizing members can be adapted to become angled relative to a longitudinal axis of the elongate tubular member. Moreover, one or all the articulation controls and functions can be integrated into a singular handle assembly connectable to the tissue manipulation assembly via a rigid or flexible tubular body.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: June 29, 2021
    Assignee: USGI MEDICAL, INC.
    Inventors: Vahid Saadat, Richard C. Ewers, Cang C. Lam, Robert A. Vaughan, Chris Rothe, Kenneth H. Michlitsch
  • Patent number: 10441450
    Abstract: In apparatus and methods for rapid deployment of tissue anchors, a tissue manipulation assembly has a pivoting jaw. A needle assembly can be advanced through the launch tube across tissue received between the jaw members of the tissue manipulation assembly. Tissue anchors can be advanced through the needle assembly for securing received tissue. The tissue anchors can be positioned within a reloadable chamber of a control handle disposed outside the patient, then advanced through the needle assembly.
    Type: Grant
    Filed: May 16, 2013
    Date of Patent: October 15, 2019
    Assignee: USGI Medical, Inc.
    Inventors: Vahid Saadat, Cang C. Lam
  • Publication number: 20180344501
    Abstract: Apparatus for manipulating and securing tissue are described herein. In creating tissue folds within the body of a patient, a tissue manipulation assembly may generally have an elongate tubular member, an engagement member slidably disposed through the tubular member and a distal end adapted to engage tissue via a helical member, tissue stabilizing members positioned at the tubular member distal end which are adapted to stabilize tissue therebetween, and a delivery tube pivotable about the tissue stabilizer. The stabilizing members can be adapted to become angled relative to a longitudinal axis of the elongate tubular member. Moreover, one or all the articulation controls and functions can be integrated into a singular handle assembly connectable to the tissue manipulation assembly via a rigid or flexible tubular body.
    Type: Application
    Filed: July 24, 2018
    Publication date: December 6, 2018
    Inventors: Vahid Saadat, Richard C. Ewers, Cang C. Lam, Robert A. Vaughan, Chris Rothe, Kenneth H. Michlitsch
  • Patent number: 10045871
    Abstract: Apparatus for manipulating and securing tissue are described herein. In creating tissue folds within the body of a patient, a tissue manipulation assembly may generally have an elongate tubular member, an engagement member slidably disposed through the tubular member and a distal end adapted to engage tissue via a helical member, tissue stabilizing members positioned at the tubular member distal end which are adapted to stabilize tissue therebetween, and a delivery tube pivotable about the tissue stabilizer. The stabilizing members can be adapted to become angled relative to a longitudinal axis of the elongate tubular member. Moreover, one or all the articulation controls and functions can be integrated into a singular handle assembly connectable to the tissue manipulation assembly via a rigid or flexible tubular body.
    Type: Grant
    Filed: November 11, 2016
    Date of Patent: August 14, 2018
    Assignee: USGI Medical, Inc.
    Inventors: Vahid Saadat, Richard C. Ewers, Cang C. Lam, Robert A. Vaughan, Chris Rothe, Kenneth H. Michlitsch
  • Patent number: 9585651
    Abstract: Methods and apparatus for securing and deploying tissue anchors are described herein. A tissue manipulation assembly is pivotably coupled to the distal end of a tubular member. A reconfigurable launch tube is also pivotably coupled to the tissue manipulation assembly, which may be advanced through a shape-lockable endoscopic device, a conventional endoscope, or directly by itself into a patient. A second tool can be used in combination with the tissue manipulation assembly to engage tissue and manipulate the tissue in conjunction with the tissue manipulation assembly. A deployment assembly is provided for securing engaged tissue via one or more tissue anchors, the deployment assembly also being configured to disengage the anchors endoluminally or laparoscopically.
    Type: Grant
    Filed: May 26, 2005
    Date of Patent: March 7, 2017
    Assignee: USGI Medical, Inc.
    Inventors: Cang C. Lam, Richard C. Ewers, Robert A. Vaughan, Vahid Saadat
  • Publication number: 20170056228
    Abstract: Apparatus for manipulating and securing tissue are described herein. In creating tissue folds within the body of a patient, a tissue manipulation assembly may generally have an elongate tubular member, an engagement member slidably disposed through the tubular member and a distal end adapted to engage tissue via a helical member, tissue stabilizing members positioned at the tubular member distal end which are adapted to stabilize tissue therebetween, and a delivery tube pivotable about the tissue stabilizer. The stabilizing members can be adapted to become angled relative to a longitudinal axis of the elongate tubular member. Moreover, one or all the articulation controls and functions can be integrated into a singular handle assembly connectable to the tissue manipulation assembly via a rigid or flexible tubular body.
    Type: Application
    Filed: November 11, 2016
    Publication date: March 2, 2017
    Inventors: Vahid Saadat, Richard C. Ewers, Cang C. Lam, Robert A. Vaughan, Chris Rothe, Kenneth H. Michlitsch
  • Patent number: 9572581
    Abstract: Tissue manipulation and securement systems are described herein. A tissue manipulation assembly is pivotably coupled to the distal end of a tubular member and has a lower jaw member and an upper jaw member pivotably coupled to the lower jaw member. A reconfigurable launch tube is also pivotably coupled to the upper jaw member and is used to urge the jaw members from a low-profile configuration to an open configuration for receiving tissue. The tissue manipulation assembly may be advanced through a shape-lockable endoscopic device, a conventional endoscope, or directly by itself into a patient. A second tool can be used in combination with the tissue manipulation assembly to engage tissue and manipulate the tissue in conjunction with the tissue manipulation assembly.
    Type: Grant
    Filed: August 19, 2014
    Date of Patent: February 21, 2017
    Assignee: USGI Medical, Inc.
    Inventors: Robert A. Vaughan, Cang C. Lam, Richard C. Ewers, Vahid Saadat
  • Patent number: 8926634
    Abstract: Apparatus and methods for manipulating and securing tissue are described herein. In creating tissue folds within the body of a patient, a tissue manipulation assembly may generally have an elongate tubular member, an engagement member slidably disposed through the tubular member and a distal end adapted to engage tissue via a helical member, tissue stabilizing members positioned at the tubular member distal end which are adapted to stabilize tissue therebetween, and a delivery tube pivotable about the tissue stabilizer. The stabilizing members can be adapted to become angled relative to a longitudinal axis of the elongate tubular member. Moreover, one or all the articulation controls and functions can be integrated into a singular handle assembly connectable to the tissue manipulation assembly via a rigid or flexible tubular body.
    Type: Grant
    Filed: December 5, 2007
    Date of Patent: January 6, 2015
    Assignee: USGI Medical, Inc.
    Inventors: Chris A. Rothe, Richard C. Ewers, Cang C. Lam, Vahid Saadat, Kenneth J. Michlitsch
  • Patent number: 8906038
    Abstract: Devices and methods for forming and securing tissue folds and elongated invaginations in gastric tissue are used as a treatment for obesity. In several embodiments, a plurality of tissue folds is formed along the greater curvature of the stomach using laparoscopic tissue anchor deployment devices. Additional embodiments include various combinations of tissue folds, elongated invaginations, and other reconfigurations of stomach tissue using laparoscopic devices or laparoscopic devices in combination with endoscopic devices.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: December 9, 2014
    Assignee: USGI Medical, Inc.
    Inventors: Richard C. Ewers, Eugene G. Chen, Tracy D. Maahs, Stuart Moran, Cang C. Lam
  • Publication number: 20140358164
    Abstract: Tissue manipulation and securement systems are described herein. A tissue manipulation assembly is pivotably coupled to the distal end of a tubular member and has a lower jaw member and an upper jaw member pivotably coupled to the lower jaw member. A reconfigurable launch tube is also pivotably coupled to the upper jaw member and is used to urge the jaw members from a low-profile configuration to an open configuration for receiving tissue. The tissue manipulation assembly may be advanced through a shape-lockable endoscopic device, a conventional endoscope, or directly by itself into a patient. A second tool can be used in combination with the tissue manipulation assembly to engage tissue and manipulate the tissue in conjunction with the tissue manipulation assembly.
    Type: Application
    Filed: August 19, 2014
    Publication date: December 4, 2014
    Inventors: Robert A. Vaughan, Cang C. Lam, Richard C. Ewers, Vahid Saadat
  • Patent number: 8828027
    Abstract: Tissue manipulation and securement systems are described herein. A tissue manipulation assembly is pivotably coupled to the distal end of a tubular member and has a lower jaw member and an upper jaw member pivotably coupled to the lower jaw member. A reconfigurable launch tube is also pivotably coupled to the upper jaw member and is used to urge the jaw members from a low-profile configuration to an open configuration for receiving tissue. The tissue manipulation assembly may be advanced through a shape-lockable endoscopic device, a conventional endoscope, or directly by itself into a patient. A second tool can be used in combination with the tissue manipulation assembly to engage tissue and manipulate the tissue in conjunction with the tissue manipulation assembly.
    Type: Grant
    Filed: June 14, 2010
    Date of Patent: September 9, 2014
    Assignee: U.S.G.I. Medical, Inc.
    Inventors: Robert A. Vaughan, Cang C. Lam, Richard C. Ewers, Vahid Saadat
  • Publication number: 20140148828
    Abstract: Apparatus and methods are provided for forming a gastrointestinal tissue fold by engaging tissue at a first tissue contact point and moving the first tissue contact point from a position initially distal to, or in line with, a second tissue contact point to a position proximal of the second contact point, thereby forming the tissue fold, and extending an anchor assembly through the tissue fold from a vicinity of the second tissue contact point. Adjustable anchor assemblies; as well as anchor delivery systems, shape-lockable guides and methods for endoluminally performing medical procedures, such as gastric reduction, treatment of gastroesophageal reflux disease, resection of lesions, and treatment of bleeding sites; are also provided.
    Type: Application
    Filed: November 28, 2012
    Publication date: May 29, 2014
    Applicant: USGI MEDICAL, INC.
    Inventors: Richard C. Ewers, Vahid C. Saadat, Kenneth J. Michlitsch, Chris A. Rothe, Rodney C. Brenneman, Cang C. Lam, Eugene C. Chen
  • Patent number: 8628541
    Abstract: Methods and apparatus for securing and deploying tissue anchors are described herein. A tissue manipulation assembly is pivotably coupled to the distal end of a tubular member. A reconfigurable launch tube is also pivotably coupled to the tissue manipulation assembly, which may be advanced through a shape-lockable endoscopic device, a conventional endoscope, or directly by itself into a patient. A second tool can be used in combination with the tissue manipulation assembly to engage tissue and manipulate the tissue in conjunction with the tissue manipulation assembly. A deployment assembly is provided for securing engaged tissue via one or more tissue anchors, the deployment assembly also being configured to disengage the anchors endoluminally or laparoscopically by applying thermal energy through at least one suture cutting element disposed along the deployment assembly.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: January 14, 2014
    Assignee: USGI Medical, Inc.
    Inventors: Vahid Saadat, Richard C. Ewers, Cang C. Lam
  • Publication number: 20130253537
    Abstract: In apparatus and methods for rapid deployment of tissue anchors, a tissue manipulation assembly has a pivoting jaw. A needle assembly can be advanced through the launch tube across tissue received between the jaw members of the tissue manipulation assembly. Tissue anchors can be advanced through the needle assembly for securing received tissue. The tissue anchors can be positioned within a reloadable chamber of a control handle disposed outside the patient, then advanced through the needle assembly.
    Type: Application
    Filed: May 16, 2013
    Publication date: September 26, 2013
    Inventors: Vahid Saadat, Cang C. Lam
  • Patent number: 8444657
    Abstract: Apparatus and methods for rapid deployment of tissue anchors are described herein. A tissue manipulation assembly is pivotably coupled to the distal end of a tubular member and has a lower jaw member and an upper jaw member pivotably coupled to the lower jaw member. A reconfigurable launch tube is pivotably coupled to the upper jaw member and is used to urge the jaw members from a low-profile configuration to an open configuration. A needle assembly can be advanced through the launch tube across tissue received between the jaw members of the tissue manipulation assembly. Tissue anchors can be advanced through the needle assembly for securing received tissue. The tissue anchors can be positioned within a reloadable chamber of a control handle disposed outside the patient, then advanced through the needle assembly.
    Type: Grant
    Filed: April 28, 2005
    Date of Patent: May 21, 2013
    Assignee: USGI Medical, Inc.
    Inventors: Vahid Saadat, Cang C. Lam
  • Patent number: 8439898
    Abstract: An endoscopic tissue anchor deployment device includes a handle, an elongated shaft defining an internal lumen, and an end effector attached to the distal end of the elongated shaft. A tissue anchor catheter is removably inserted through the lumen of the elongated shaft, the catheter having a tissue anchor assembly that is deployable from its distal end. In some embodiments, the handle includes a pin and track assembly that define a series of handle actuation steps corresponding to deployment steps for the deployment device end effector and the tissue anchor catheter. In some embodiments, the handle includes a catheter stop member that prevents movement of the tissue anchor catheter under certain circumstances, and a handle stop member that prevents actuation of the handle under certain circumstances.
    Type: Grant
    Filed: June 17, 2009
    Date of Patent: May 14, 2013
    Assignee: USGI Medical, Inc.
    Inventors: Cang C. Lam, Stuart Moran, Tracy D. Maahs, John Fernando Rodriguez, Seferino Enrique Torres, Wesley Lummis
  • Patent number: 8343175
    Abstract: Apparatus and methods are provided for forming a gastrointestinal tissue fold by engaging tissue at a first tissue contact point and moving the first tissue contact point from a position initially distal to, or in line with, a second tissue contact point to a position proximal of the second contact point, thereby forming the tissue fold, and extending an anchor assembly through the tissue fold from a vicinity of the second tissue contact point. Adjustable anchor assemblies; as well as anchor delivery systems, shape-lockable guides and methods for endoluminally performing medical procedures, such as gastric reduction, treatment of gastroesophageal reflux disease, resection of lesions, and treatment of bleeding sites; are also provided.
    Type: Grant
    Filed: April 26, 2010
    Date of Patent: January 1, 2013
    Assignee: USGI Medical, Inc.
    Inventors: Richard C. Ewers, Vahid Saadat, Kenneth J. Michlitsch, Chris A. Rothe, Rodney C. Brenneman, Cang C. Lam, Eugene G. Chen
  • 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: 8298291
    Abstract: Methods and apparatus for securing and deploying tissue anchors are described herein. A tissue manipulation assembly is pivotably coupled to the distal end of a tubular member. A reconfigurable launch tube is also pivotably coupled to the tissue manipulation assembly, which may be advanced through a shape-lockable endoscopic device, a conventional endoscope, or directly by itself into a patient. A second tool can be used in combination with the tissue manipulation assembly to engage tissue and manipulate the tissue in conjunction with the tissue manipulation assembly. A deployment assembly is provided for securing engaged tissue via one or more tissue anchors, the deployment assembly also being configured to disengage the anchors endoluminally or laparoscopically by applying thermal energy through at least one suture cutting element disposed along the deployment assembly.
    Type: Grant
    Filed: April 26, 2006
    Date of Patent: October 30, 2012
    Assignee: USGI Medical, Inc.
    Inventors: Richard C. Ewers, Cang C. Lam
  • Patent number: 8216252
    Abstract: Tissue manipulation and securement systems are described herein. A tissue manipulation assembly is pivotably coupled to the distal end of a tubular member and has a lower jaw member and an upper jaw member pivotably coupled to the lower jaw member. A reconfigurable launch tube is also pivotably coupled to the upper jaw member and is used to urge the jaw members from a low-profile configuration to an open configuration for receiving tissue. The tissue manipulation assembly may be advanced through a shape-lockable endoscopic device, a conventional endoscope, or directly by itself into a patient. A second tool can be used in combination with the tissue manipulation assembly to engage tissue and manipulate the tissue in conjunction with the tissue manipulation assembly.
    Type: Grant
    Filed: March 1, 2005
    Date of Patent: July 10, 2012
    Assignee: USGI Medical, Inc.
    Inventors: Robert A. Vaughan, Cang C. Lam, Richard C. Ewers, Vahid Saadat