Cang Chi Lam from Richmond, TX, age 55

Resumes

Cang Lam

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Us Patents

Methods For Grasping And Cinching Tissue Anchors
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US Patent:

7390329, Jun 24, 2008
Filed:

Jan 14, 2005
Appl. No.:

11/036946
Inventors:

Hendrik S. Westra - San Clemente CA, US
Cang C. Lam - Irvine CA, US
Richard C. Ewers - Fullerton CA, US
Vahid Saadat - Saratoga CA, US
Assignee:

USGI Medical, Inc. - San Clemente CA
International Classification:

A61B 17/10
A61B 17/08
US Classification:

606151, 606139, 606205
Abstract:

Methods and apparatus for controlled grasping and cinching or locking of a tissue anchor are provided. In one variation, a tube is provided having a lumen and a resilient member that obstructs the lumen. A grasper may be advanced coaxially through the lumen, such that it reversibly displaces the resilient member and extends beyond the lumen's outlet to engage an element of the tissue anchor. The grasper then may be retracted within the tube, such that the resilient member again obstructs the lumen of the tube. Continued retraction of the grasper may act to cinch the anchor, for example, via interaction between the anchor and the obstructing resilient member. During cinching, a cinching mechanism of the anchor optionally may be positioned at least partially within the tube to enhance lateral stability. Furthermore, feedback indicative of a degree of cinching or locking may be provided during cinching.

Apparatus And Methods For Forming And Securing Gastrointestinal Tissue Folds
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US Patent:

7416554, Aug 26, 2008
Filed:

Sep 25, 2003
Appl. No.:

10/672375
Inventors:

Cang Lam - Irvine CA, US
Rich Ewers - Fullerton CA, US
Alexander Khairkhahan - Palo Alto CA, US
Vahid C. Saadat - Saratoga CA, US
Assignee:

USGI Medical Inc - San Clemente CA
International Classification:

A61B 17/08
A61B 17/04
US Classification:

606153, 606232
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.

Interlocking Tissue Anchor Apparatus And Methods
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US Patent:

7601159, Oct 13, 2009
Filed:

Sep 30, 2004
Appl. No.:

10/955244
Inventors:

Richard C. Ewers - Fullerton CA, US
Tracy D. Maahs - Rancho Santa Margarita CA, US
Cang C. Lam - Irvine CA, US
Vahid Saadat - Saratoga CA, US
Chris Rothe - San Jose CA, US
Assignee:

USGI Medical, Inc. - San Clemente CA
International Classification:

A61B 17/03
US Classification:

606139, 606232
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.

Apparatus And Methods For Forming Gastrointestinal Tissue Approximations
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US Patent:

7618426, Nov 17, 2009
Filed:

Aug 11, 2003
Appl. No.:

10/639162
Inventors:

Richard C. Ewers - Fullerton CA, US
Boris Reydel - West Caldwell NJ, US
Cang Lam - Irvine CA, US
Eugene Chen - Carlsbad CA, US
Brent D. Seybold - Santa Clara CA, US
Rodney Brenneman - San Juan Capistrano CA, US
Vahid C. Saadat - Saratoga CA, US
Assignee:

USGI Medical, Inc. - San Clemente CA
International Classification:

A61B 17/00
A61B 17/10
A61B 17/12
A61B 17/125
US Classification:

606139, 606153, 606205
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.

Apparatus And Methods For Forming And Securing Gastrointestinal Tissue Folds
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US Patent:

7704264, Apr 27, 2010
Filed:

Nov 17, 2004
Appl. No.:

10/992306
Inventors:

Richard C. Ewers - Fullerton CA, US
Vahid C. Saadat - Saratoga CA, US
Kenneth J. Michlitsch - Livermore CA, US
Chris Rothe - San Jose CA, US
Rodney Brenneman - San Juan Capistrano CA, US
Cang C. Lam - Irvine CA, US
Eugene C. Chen - Carlsbad CA, US
Assignee:

USGI Medical, Inc. - San Clemente CA
International Classification:

A61B 17/10
A61B 17/08
A61B 17/15
A61B 17/128
US Classification:

606151, 606153, 606232, 606144, 606139
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.

Tissue Manipulation And Securement System
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US Patent:

7736374, Jun 15, 2010
Filed:

Mar 1, 2005
Appl. No.:

11/070846
Inventors:

Robert A. Vaughan - Laguna Niguel CA, US
Cang C. Lam - Irvine CA, US
Richard C. Ewers - Fullerton CA, US
Vahid Saadat - Saratoga CA, US
Assignee:

USGI Medical, Inc. - San Clemente CA
International Classification:

A61B 17/08
A61B 17/12
A61B 17/00
US Classification:

606153, 606144, 606205
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.

Apparatus And Methods For Positioning And Securing Anchors
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US Patent:

7736378, Jun 15, 2010
Filed:

May 7, 2004
Appl. No.:

10/841245
Inventors:

Tracy D. Maahs - Rancho Santa Margarita CA, US
Richard C. Ewers - Fullerton CA, US
Jesus Flores - Perris CA, US
Alexander Khairkhahan - Palo Alto CA, US
Vahid Saadat - Atherton CA, US
Cang C. Lam - Irvine CA, US
Assignee:

USGI Medical, Inc. - San Clemente CA
International Classification:

A61B 17/04
US Classification:

606232
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.

Apparatus And Methods For Forming And Securing Gastrointestinal Tissue Folds
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US Patent:

7744613, Jun 29, 2010
Filed:

Dec 12, 2003
Appl. No.:

10/734547
Inventors:

Richard C. Ewers - Fullerton CA, US
Vahid Saadat - Atherton CA, US
Kenneth J. Michlitsch - Livermore CA, US
Chris A. Rothe - San Mateo CA, US
Rodney A. Brenneman - San Juan Capistrano CA, US
Cang C. Lam - Irvine CA, US
Eugene G. Chen - Carlsbad CA, US
Assignee:

USGI Medical, Inc. - San Clemente CA
International Classification:

A61B 17/08
A61B 17/04
US Classification:

606153, 606232
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.