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).
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Publication number: 20170042548Abstract: An implant delivery system is described. The implant delivery system utilizes an implant, implant wire, delivery sheath, and a torque device. The torque device may include a cutting element to slit the delivery sheath and a clamp device to fix the position of the implant delivery wire.Type: ApplicationFiled: August 11, 2016Publication date: February 16, 2017Applicant: MicroVention, Inc.Inventor: Cang Lam
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Patent number: 9545255Abstract: Methods and apparatus for the endoluminal revision of previously performed obesity procedures which have failed are described. One or more endoluminal instruments may be advanced per-orally into the previously formed failed pouch where a number of different procedures can be performed. One or more tissue folds can be formed and secured to reduce the size of the pouch, or the stoma connecting the pouch to the intestinal tract can be reduced in size using endoluminally deployed tissue anchors. These procedures can be performed entirely from within the pouch lumen or upon the exterior surface of the pouch via transgastric entry of the instruments into the peritoneal cavity of a patient. Alternatively, the interior tissue within the pouch can be injured or sclerosed to shrink the pouch lumen. In another alternative, a length of the Roux limb can be shortened endoluminally to create a malabsorptive region.Type: GrantFiled: May 20, 2014Date of Patent: January 17, 2017Assignee: USGI Medical, Inc.Inventors: John A. Cox, Tracy Maahs, Richard C. Ewers, Eugene Chen, Cang Lam, Lee Swanstrom
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Publication number: 20160361180Abstract: In one embodiment according to the present invention, a stent is described having a generally cylindrical body formed from a single woven nitinol wire. The distal and proximal ends of the stent include a plurality of loops, some of which include marker members used for visualizing the position of the stent. In another embodiment, the previously described stent includes an inner flow diverting layer.Type: ApplicationFiled: August 25, 2016Publication date: December 15, 2016Applicant: MicroVention, Inc.Inventors: Shirley Vong, Priscilla Tsai, Cang Lam, Ross Soltanian, Greg Bak-Boychuk, Tai D. Tieu, Ponaka Pung, Arnold Tuason, Heather Griffith
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Patent number: 9451981Abstract: A surgical sheath for use in endoscopic trans-nasal or intra-ocular surgery has first and second attachment fittings on opposite side of a conical section used for attaching individual sheaths to form a sheath pair. The sheaths of the pair can mutually support each other during surgery, to better resist inadvertent displacement of the sheaths. After the sheaths are positioned, the conical sections of the sheaths may be attached together using clips, pins, belts or other techniques. The sheaths reduce collateral trauma to the tissues in the surgical pathway.Type: GrantFiled: February 24, 2015Date of Patent: September 27, 2016Assignee: SPIWay LLCInventors: Eugene Chen, Cang Lam
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Patent number: 9439791Abstract: In one embodiment according to the present invention, a stent is described having a generally cylindrical body formed from a single woven nitinol wire. The distal and proximal ends of the stent include a plurality of loops, some of which include marker members used for visualizing the position of the stent. In another embodiment, the previously described stent includes an inner flow diverting layer.Type: GrantFiled: March 15, 2013Date of Patent: September 13, 2016Assignee: MicroVention, Inc.Inventors: Shirley Vong, Priscilla Tsai, Cang Lam, Ross Soltanian, Greg Bak-Boychuk, Tai D. Tieu, Ponaka Pung, Arnold Tuason, Heather Griffith
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Publication number: 20150164552Abstract: A surgical sheath for use in endoscopic trans-nasal or intra-ocular surgery has first and second attachment fittings on opposite side of a conical section used for attaching individual sheaths to form a sheath pair. The sheaths of the pair can mutually support each other during surgery, to better resist inadvertent displacement of the sheaths. After the sheaths are positioned, the conical sections of the sheaths may be attached together using clips, pins, belts or other techniques. The sheaths reduce collateral trauma to the tissues in the surgical pathway.Type: ApplicationFiled: February 24, 2015Publication date: June 18, 2015Inventors: Eugene Chen, Cang Lam
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Publication number: 20150157193Abstract: A surgical sheath for use in endoscopic trans-nasal or intra-ocular surgery has an angle section joined to a conical section, with the conical section having a central axis not parallel to a central axis of the angle section. A body section is joined to the angle section, with the body section having a length at least twice the length of the angle section. The conical section, the angle section and the body section may be a flexible or compliant material. The sheath reduces collateral trauma to the tissues in the surgical pathway.Type: ApplicationFiled: February 19, 2015Publication date: June 11, 2015Inventors: Eugene Chen, Aylin Kim, Cang Lam, Blake Hannaford, Randall A. Bly
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Patent number: 8986201Abstract: A surgical sheath for use in endoscopic trans-nasal or intra-ocular surgery has an angle section joined to a conical section, with the conical section having a central axis not parallel to a central axis of the angle section. A body section is joined to the angle section, with the body section having a length at least twice the length of the angle section. The conical section, the angle section and the body section may be a flexible or compliant material. The sheath reduces collateral trauma to the tissues in the surgical pathway.Type: GrantFiled: March 13, 2013Date of Patent: March 24, 2015Assignee: Spiway LLCInventors: Eugene Chen, Aylin Kim, Cang Lam, Blake Hannaford, Randall A Bly
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Patent number: 8920436Abstract: 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. The handle may include 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: GrantFiled: January 11, 2012Date of Patent: December 30, 2014Assignee: USGI Medical, Inc.Inventors: Cang Lam, Richard C. Ewers, Christopher James Earley
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Publication number: 20140288588Abstract: An embolic protection device includes an expandable and contractible filter that can be supported by one or more struts. The struts can be connected to the filter or interwoven into the filter, so as to assist in the expansion and contraction of the filter. In one embodiment, the proximal ends of the struts connect to a joint that is fixed in position relative to a delivery wire, while the distal end of the filter connect to a joint that slides relative to the delivery wire.Type: ApplicationFiled: March 17, 2014Publication date: September 25, 2014Applicant: MicroVention, Inc.Inventors: Cang Lam, Priscilla Tsai, Juan Valencia, Jacqueline Macias, Kaushik Joshi, Arnold Tuason
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Publication number: 20140257351Abstract: Methods and apparatus for the endoluminal revision of previously performed obesity procedures which have failed are described. One or more endoluminal instruments may be advanced per-orally into the previously formed failed pouch where a number of different procedures can be performed. One or more tissue folds can be formed and secured to reduce the size of the pouch, or the stoma connecting the pouch to the intestinal tract can be reduced in size using endoluminally deployed tissue anchors. These procedures can be performed entirely from within the pouch lumen or upon the exterior surface of the pouch via transgastric entry of the instruments into the peritoneal cavity of a patient. Alternatively, the interior tissue within the pouch can be injured or sclerosed to shrink the pouch lumen. In another alternative, a length of the Roux limb can be shortened endoluminally to create a malabsorptive region.Type: ApplicationFiled: May 20, 2014Publication date: September 11, 2014Applicant: USGI Medical, Inc.Inventors: John A. Cox, Tracy Maahs, Richard C. Ewers, Eugene Chen, Cang Lam, Lee Swanstrom
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Patent number: 8726909Abstract: Methods and apparatus for the endoluminal revision of previously performed obesity procedures which have failed are described. One or more endoluminal instruments may be advanced per-orally into the previously formed failed pouch where a number of different procedures can be performed. One or more tissue folds can be formed and secured to reduce the size of the pouch, or the stoma connecting the pouch to the intestinal tract can be reduced in size using endoluminally deployed tissue anchors. These procedures can be performed entirely from within the pouch lumen or upon the exterior surface of the pouch via transgastric entry of the instruments into the peritoneal cavity of a patient. Alternatively, the interior tissue within the pouch can be injured or sclerosed to shrink the pouch lumen. In another alternative, a length of the Roux limb can be shortened endoluminally to create a malabsorptive region.Type: GrantFiled: January 27, 2006Date of Patent: May 20, 2014Assignee: USGI Medical, Inc.Inventors: John A. Cox, Tracy Maahs, Richard C. Ewers, Eugene Chen, Cang Lam, Lee Swanstrom
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Patent number: 8574243Abstract: 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: GrantFiled: December 12, 2003Date of Patent: November 5, 2013Assignee: USGI Medical, Inc.Inventors: Vahid C. Saadat, Kenneth Jerome Michlitsch, Rich C. Ewers, Chris Rothe, Rodney Brenneman, Cang Lam, Eugene Chen
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Patent number: 8540740Abstract: 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: GrantFiled: July 10, 2012Date of Patent: September 24, 2013Assignee: USGI Medical, Inc.Inventors: Cang Lam, Rich Ewers, Alexander Khairkhahan, Vahid C. Saadat
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Publication number: 20130245745Abstract: In one embodiment according to the present invention, a stent is described having a generally cylindrical body formed from a single woven nitinol wire. The distal and proximal ends of the stent include a plurality of loops, some of which include marker members used for visualizing the position of the stent. In another embodiment, the previously described stent includes an inner flow diverting layer.Type: ApplicationFiled: March 15, 2013Publication date: September 19, 2013Applicant: MICROVENTION, INC.Inventors: Shirley Vong, Priscilla Tsai, Cang Lam, Ross Soltanian, Greg Bak-Boychuk, Tai D. Tieu, Ponaka Pung, Arnold Tuason, Heather Griffith
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Publication number: 20120277775Abstract: 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: ApplicationFiled: July 10, 2012Publication date: November 1, 2012Applicant: USGI MEDICAL, INC.Inventors: Cang Lam, Rich Ewers, Alexander Khairkhahan, Vahid C. Saadat
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Patent number: 8262676Abstract: 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: GrantFiled: September 18, 2009Date of Patent: September 11, 2012Assignee: USGI Medical, Inc.Inventors: Richard C. Ewers, Boris Reydel, Cang Lam, Eugene G. Chen, Brent D. Seybold, Rodney Brenneman, Vahid Saadat
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Publication number: 20120184972Abstract: 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. The handle may include 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: ApplicationFiled: January 11, 2012Publication date: July 19, 2012Applicant: USGI MEDICAL, INC.Inventors: Cang Lam, Richard C. Ewers, Christopher James Earley
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Publication number: 20100249500Abstract: 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: ApplicationFiled: June 14, 2010Publication date: September 30, 2010Applicant: USGI MEDICAL, INC.Inventors: Boris REYDEL, Cang LAM, Richard C. EWERS, Rodney BRENNEMAN, Vahid SAADAT
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Publication number: 20100211086Abstract: 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: ApplicationFiled: April 26, 2010Publication date: August 19, 2010Applicant: USGI Medical, Inc.Inventors: Rich Ewers, Vahid C. Saadat, Ken Michlitsch, Chris Rothe, Rodney Brenneman, Cang Lam, Eugene Chen