Patents by Inventor Cang Lam

Cang 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).

  • Publication number: 20050251202
    Abstract: Interlocking tissue anchor apparatus and methods 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. Anchor assemblies can be delivered via the tissue manipulation assembly into or through the tissue. The anchors can incorporate various temporary interlocking features or spacing elements between one another to ensure that an anchor is not prematurely ejected from the needle assembly. This allows the anchor assembly to be advanced distally as well as withdrawn proximally within a deployment sheath while avoiding inadvertently ejecting an anchor.
    Type: Application
    Filed: September 30, 2004
    Publication date: November 10, 2005
    Applicant: USGI Medical Inc.
    Inventors: Richard Ewers, Tracy Maahs, Cang Lam, Vahid Saadat, Chris Rothe
  • Publication number: 20050250988
    Abstract: Removable apparatus for manipulating and securing tissue within a treatment space are described herein. In creating tissue folds within the body of a patient, a tissue manipulation assembly may generally have tissue stabilizing members adapted to stabilize tissue therebetween, an engagement member slidably disposed through the stabilizing members and having a distal end adapted to engage tissue, and a delivery tube pivotable about the tissue stabilizing members. The tissue manipulation assembly optionally may be configured for removable attachment to an endoscope.
    Type: Application
    Filed: December 1, 2004
    Publication date: November 10, 2005
    Applicant: USGI Medical Inc.
    Inventors: Richard Ewers, Vahid Saadat, Cang Lam, Chris Rothe
  • Publication number: 20050251189
    Abstract: Multi-position tissue manipulation assemblies 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. One or all the articulation controls and functions can be integrated into a singular handle enclosure connectable to the tissue manipulation assembly via a rigid or flexible tubular body. A needle deployment mechanism may be positioned within the enclosure. Such a mechanism can have multiple positions adapted to lock and/or advance a needle assembly within the enclosure in a controlled manner as well as for deploying the anchor assembly.
    Type: Application
    Filed: September 29, 2004
    Publication date: November 10, 2005
    Applicant: USGI Medical Inc.
    Inventors: Vahid Saadat, Chris Rothe, Richard Ewers, Cang Lam, Robert Vaughan
  • Publication number: 20050251165
    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: March 1, 2005
    Publication date: November 10, 2005
    Applicant: USGI Medical Inc.
    Inventors: Robert Vaughan, Cang Lam, Richard Ewers, Vahid Saadat
  • Publication number: 20050251157
    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 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: Application
    Filed: May 7, 2004
    Publication date: November 10, 2005
    Inventors: Vahid Saadat, Tracy Maahs, Richard Ewers, Marvin Elmers, Jesus Flores, Alex Khairkhahan, Ruey-Feng Peh, Cang Lam
  • Publication number: 20050251206
    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: Application
    Filed: May 7, 2004
    Publication date: November 10, 2005
    Inventors: Tracy Maahs, Richard Ewers, Jesus Flores, Alex Khairkhahan, Ruey-Feng Peh, Vahid Saadat, Cang Lam
  • Publication number: 20050250986
    Abstract: Removable 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 tissue stabilizing members adapted to stabilize tissue therebetween, an engagement member slidably disposed through the stabilizing members and having a distal end adapted to engage tissue, and a delivery tube pivotable about the tissue stabilizing members. The tissue manipulation assembly optionally may be configured for removable attachment to an endoscope.
    Type: Application
    Filed: December 1, 2004
    Publication date: November 10, 2005
    Applicant: USGI Medical Inc.
    Inventors: Chris Rothe, Richard Ewers, Vahid Saadat, Cang Lam
  • Publication number: 20050245945
    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 17, 2004
    Publication date: November 3, 2005
    Applicant: USGI Medical Inc.
    Inventors: Rich Ewers, Vahid Saadat, Ken Michlitsch, Chris Rothe, Rodney Brenneman, Cang Lam, Eugene Chen
  • Publication number: 20050119671
    Abstract: Apparatus & methods for endoscopic suturing are described herein. A distal tip of the endoscopic device engages the tissue and then approximates the engaged tissue to form a tissue fold. A needle body positioned within a flexible catheter is deployed into or through the newly created tissue fold where it is then detached or released from the endoscopic device. The needle body has a length of suture which depends therefrom and can be used to secure the tissue fold. The entire endoscopic device or its tissue engaging assembly can then be rotated relative to the tissue fold while maintaining engagement with the tissue to maneuver the flexible catheter to the opposing side of the penetrated tissue fold. This procedure can be repeated any number of times to create an interrupted, continuous, or running suture to secure the tissue fold.
    Type: Application
    Filed: November 10, 2004
    Publication date: June 2, 2005
    Applicant: USGI MEDICAL INC.
    Inventors: Boris Reydel, Cang Lam, Richard Ewers, Rodney Brenneman, Vahid Saadat
  • Publication number: 20050075653
    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 18, 2004
    Publication date: April 7, 2005
    Applicant: USGI Medical Inc.
    Inventors: Vahid Saadat, Kenneth Michlitsch, Rich Ewers, Chris Rothe, Rodney Brenneman, Cang Lam, Eugene Chen
  • Publication number: 20050065536
    Abstract: Apparatus and methods are provided for forming a gastrointestinal tissue fold by engaging tissue at a first tissue contact point, moving the first tissue contact point from a position initially distal to a second tissue contact point to a position proximal of the second contact point to form a tissue fold, and extending an anchor assembly through the tissue fold near the second tissue contact point.
    Type: Application
    Filed: November 18, 2004
    Publication date: March 24, 2005
    Applicant: USGI Medical Inc.
    Inventors: Richard Ewers, Boris Reydel, Cang Lam, Eugene Chen, Brent Seybold, Rodney Brenneman, Vahid Saadat
  • Publication number: 20040225183
    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: December 12, 2003
    Publication date: November 11, 2004
    Applicant: USGI MEDICAL
    Inventors: Ken Michlitsch, Vahid C. Saadat, Rich Ewers, Chris Rothe, Rodney Brenneman, Cang Lam, Eugene Chen
  • Publication number: 20040225305
    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: December 12, 2003
    Publication date: November 11, 2004
    Applicant: USGI MEDICAL
    Inventors: Rich Ewers, Vahid C. Saadat, Ken Michlitsch, Chris Rothe, Rodney Brenneman, Cang Lam, Eugene Chen
  • Publication number: 20040162568
    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: December 12, 2003
    Publication date: August 19, 2004
    Applicant: USGI MEDICAL
    Inventors: Vahid C. Saadat, Kenneth Jerome Michlitsch, Rich C. Ewers, Chris Rothe, Rodney Brenneman, Cang Lam, Eugene Chen
  • Publication number: 20040147958
    Abstract: Apparatus and methods are provided for forming a gastrointestinal tissue fold by engaging tissue at a first tissue contact point, moving the first tissue contact point from a position initially distal to a second tissue contact point to a position proximal of the second contact point to form a tissue fold, and extending an anchor assembly through the tissue fold near the second tissue contact point. Adjustable anchor assemblies, as well as anchor delivery systems, are also provided.
    Type: Application
    Filed: September 25, 2003
    Publication date: July 29, 2004
    Applicant: USGI MEDICAL
    Inventors: Cang Lam, Rich Ewers, Alexander Khairkhahan, Vahid C. Saadat
  • Publication number: 20040116949
    Abstract: Apparatus and methods are provided for forming a gastrointestinal tissue fold by engaging tissue at a first tissue contact point, moving the first tissue contact point from a position initially distal to a second tissue contact point to a position proximal of the second contact point to form a tissue fold, and extending an anchor assembly through the tissue fold near the second tissue contact point.
    Type: Application
    Filed: August 11, 2003
    Publication date: June 17, 2004
    Inventors: Richard C. Ewers, Boris Reydel, Cang Lam, Eugene Chen, Brent D. Seybold, Rodney Brenneman, Vahid C. Saadat