Michael J Wei

US Patent:

6471638, Oct 29, 2002

Filed:

Apr 28, 2000

Appl. No.:

09/560636

Inventors:

Tenny Chang - Mountain View CA
Charles Gresl - San Francisco CA
Harry Ino - San Jose CA
Liming Lau - Palo Alto CA
John P. Lunsford - San Carlos CA
Michael Wei - San Mateo CA

Assignee:

Origin Medsystems, Inc. - Menlo Park CA

International Classification:

A61B 100

US Classification:

600114, 600104, 600121, 604264, 606190

Abstract:

An assembly of cannula and endoscope and dissection tip facilitate surgical procedures at remote surgical site in tissue of a patient. Relative rotation of the cannula about the endoscope from clamped rotational fixation of the cannula and endoscope is made possible by flexing a resilient clamping segment, and such relative rotation promotes convenient positioning of an eccentric tissue-dissecting tip about a vessel being harvested from within tissue of a patient. Color tinting of the tip or color-tinted illumination of tissue at a remote surgical site enhances contrasting visualization through the tip via the endoscope among the tissue types encountered at the surgical site within a patient. A tool bridge or lateral support mounts to a more rigid component such as an endoscope that extends from the proximal end of a cannula to support a more flexible surgical instrument also extending from the proximal end of the cannula.

US Patent:

6663641, Dec 16, 2003

Filed:

Nov 2, 2000

Appl. No.:

09/704396

Inventors:

Tim J. Kovac - Los Gatos CA
Michael F. Wei - San Mateo CA

Assignee:

Origin Medsystems, Inc. - Santa Clara CA

International Classification:

A61B 1704

US Classification:

606144, 606148, 606205

Abstract:

An endoscopic surgical instrument suitable for use with a needle-grasper having a rotational translation device for creating rotational motion at the distal end of the surgical instrument in a non 1:1 ratio to rotational energy imparted at the handle of the surgical instrument. The shaft of the surgical instrument has an articulated segment capable of remote adjustment to articulate the effector unit at the end of the surgical instrument. The effector unit may be a needle-gripper having an upwardly pointed V-shaped notch in a channeled upper jaw, a convex gripping surface on the lower jaw, such that grasping a curved suture needle between the upper and lower jaw serves to automatically orient the needle perpendicular to the needle-gripper with the curvature pointed down. Conically tapered edges on the upper jaw further facilitate this orientation. A reciprocal motion transmission occurs between the handle and the effector unit so that gripping the levers on the handle serves to operate a function in the effector unit.

US Patent:

6811546, Nov 2, 2004

Filed:

Aug 25, 2000

Appl. No.:

09/648660

Inventors:

Peter Callas - Redwood City CA
John P. Lunsford - San Carlos CA
Albert K. Chin - Palo Alto CA
Michael Wei - San Mateo CA

Assignee:

Origin Medsystems, Inc. - Santa Clara CA

International Classification:

A61M 5178

US Classification:

60416706

Abstract:

A sliding gas-tight seal on an access port promotes insufflation of an anatomical space formed in tissue at a surgical site only during insertion of an endoscopic instrument through the access port into the anatomical space, and promotes deflation of the inflated space upon removal of the endoscopic instrument from within the access port. An inflatable balloon disposed about the port near the distal end may be selectively expanded to seal and anchor the access port within an incision through which a surgical procedure with insufflation is to be performed. Multiple resilient seals may be attached to the body of the port, and an auxiliary resilient seal may be inserted within the aperture of a seal attached to the body to accommodate a wide range of endoscopic instruments of various exterior dimensions inserted through the seals.

US Patent:

6811555, Nov 2, 2004

Filed:

Sep 1, 2000

Appl. No.:

09/654605

Inventors:

Geoffrey H. Willis - Redwood City CA
Thomas A. Kramer - San Carlos CA
Paul A. Spence - Louisville KY
George T. Christakis - Toronto, CA
Timothy J. McCoy - San Carlos CA
John W. Davis - Mountain View CA
Bradley D. Blackwood - San Carlos CA
Peter Callas - Redwood City CA
Michael Francis Wei - San Mateo CA
Jonathan L. Podmore - San Francisco CA
Andrew Knight - Portola Valley CA
Thomas J. Ward - Grandview Heights OH

Assignee:

Origin Medsystems, Inc. - Santa Clara CA

International Classification:

A61B 1708

US Classification:

606153, 606151, 606213, 606219

Abstract:

A ring for use in anastomosis. Preferably, the ring is integrally formed from metal, and includes a ring portion and tines and docking members that extend from the ring portion. The ring portion and tines are malleable, and preferably also the docking members are malleable. The ring portion and tines are malleable in the sense that once deformed from a first shape into a second shape, they will not relax back into the first shape from the second. To install the ring in a vessel with the ring portion extending around an incision or other orifice, the tines pierce the tissue around the orifice and are curled against an anvil. The action of curling the tines inverts the tissue near the orifice edges to expose the inside surface of the vessel or organ. Other aspects of the invention are a method and apparatus for installing an anastomosis ring in an incision or other orifice in a vessel or other organ, a method and apparatus for precisely aligning two anastomosis rings (each installed in an incision or other orifice of a different organ) and fastening the aligned rings together. The clips can be crimped onto the aligned rings, or they can be spring clips which are sprung onto the aligned rings to clamp the rings together by spring force.

US Patent:

6814696, Nov 9, 2004

Filed:

Sep 6, 2002

Appl. No.:

10/237450

Inventors:

Tenny Chang - Mountain View CA
Charles Gresl - San Francisco CA
Harry Ino - San Jose CA
Liming Lau - Palo Alto CA
John P. Lunsford - San Carlos CA
Michael Wei - San Mateo CA

Assignee:

Origin Medsystems, Inc. - Santa Clara CA

International Classification:

A61B 100

US Classification:

600114, 600104, 600121, 604264, 604190

Abstract:

An assembly of cannula and endoscope and dissection tip facilitate surgical procedures at remote surgical site in tissue of a patient. Relative rotation of the cannula about the endoscope from clamped rotational fixation of the cannula and endoscope is made possible by flexing a resilient clamping segment, and such relative rotation promotes convenient positioning of an eccentric tissue-dissecting tip about a vessel being harvested from within tissue of a patient. Color tinting of the tip or color-tinted illumination of tissue at a remote surgical site enhances contrasting visualization through the tip via the endoscope among the tissue types encountered at the surgical site within a patient. A tool bridge or lateral support mounts to a more rigid component such as an endoscope that extends from the proximal end of a cannula to support a more flexible surgical instrument also extending from the proximal end of the cannula.

US Patent:

7235083, Jun 26, 2007

Filed:

Sep 10, 2003

Appl. No.:

10/661009

Inventors:

Juan I. Perez - Sunnyvale CA, US
Masoud Molaei - Fremont CA, US
Shahrokh R. Farahani - Danville CA, US
Michael F. Wei - Menlo Park CA, US
Shuji Uemura - San Francisco CA, US
Natalie Fawzi - Belmont CA, US

Assignee:

Endovascular Technologies, Inc. - Santa Clara CA

International Classification:

A61F 2/84
A61M 25/01
A61M 25/10

US Classification:

606108, 623 111, 606194, 60416409

Abstract:

Methods and devices for facilitating the repair of vasculature. The methods and devices described accomplish engagement of components employed during in situ assembly of repair devices.

US Patent:

7276075, Oct 2, 2007

Filed:

Nov 10, 2003

Appl. No.:

10/705652

Inventors:

Peter Callas - Redwood City CA, US
John P. Lunsford - San Carlos CA, US
Albert K. Chin - Palo Alto CA, US
Michael Wei - San Mateo CA, US

Assignee:

Origin Medsystems, Inc. - Santa Clara CA

International Classification:

A61M 29/00

US Classification:

606191, 606192, 606198

Abstract:

A sliding gas-tight seal on an access port promotes insufflation of an anatomical space formed in tissue at a surgical site only during insertion of an endoscopic instrument through the access port into the anatomical space, and promotes deflation of the inflated space upon removal of the endoscopic instrument from within the access port. An inflatable balloon disposed about the port near the distal end may be selectively expanded to seal and anchor the access port within an incision through which a surgical procedure with insufflation is to be performed. Multiple resilient seals may be attached to the body of the port, and an auxiliary resilient seal may be inserted within the aperture of a seal attached to the body to accommodate a wide range of endoscopic instruments of various exterior dimensions inserted through the seals.

US Patent:

7399313, Jul 15, 2008

Filed:

May 27, 2003

Appl. No.:

10/445723

Inventors:

Peter S. Brown - Palo Alto CA, US
Tim Kovac - Los Gatos CA, US
Michael Wei - Menlo Park CA, US
Robin W. Eckert - San Jose CA, US

International Classification:

A61F 2/06

US Classification:

623 113

Abstract:

A endovascular graft having sensing devices attached thereto to facilitate measurement of pertinent parameters within the vasculature into which the graft is implanted. Power sources and transmitters may be attached to the graft to facilitate transmission of measurements to a receiving device outside the patient's body. The sensing devices, may be electrically passive or integrated devices with measurement and transmission capability. The sensing devices may be attached to specific locations on the graft material or attached to the lumen, thereby providing pertinent parameters from critical points inside the vasculature, or may be dispersed over the surface of the graft material or within the lumen to provide a profile of pertinent parameters. The sensing devices may be attached to the graft material with one suture using a running stitch to minimize graft bulk and may be coated with a material to inhibit or control tissue growth. A bio-reabsorbable or hard wire tether or suture may be employed to attach devices to one or more graft components.

Address:

425 1 St UNIT 1201, San Francisco, CA 94105

Phone:

4157227995

VIN:

WMWMF73527TV30346

Make:

MINI

Model:

Cooper Hardtop

Year:

2007

Address:

425 1 St UNIT 1201, San Francisco, CA 94105

Phone:

4157227995

VIN:

WBAVS13547FX15638

Make:

BMW

Model:

3-Series

Year:

2007