Charles Michael Adam, 66210 Belle Maison Dr, Lafayette, LA 70506

6432044, Aug 13, 2002

Jan 25, 2000

09/490552

John P. Lunsford - San Carlos CA
Charles J. Adam - San Jose CA
John W. Davis - Mountain View CA
Albert K. Chin - Palo Alto CA

Origin Medsystems, Inc. - Menlo Park CA

A61B 1732

600129, 600127

A retractor and a surgical tool are positioned within a cannula, and a dissection cradle of the retractor is positioned at the distal end of the cannula. The retractor includes a first portion with an axis approximately parallel to the axis of the cannula and a second portion with an axis skewed relative to the axis of the cannula. The dissection cradle is located at the distal end of the second portion of the retractor, and may include two substantially parallel, spaced legs with the retractor shaped in a loop between and in a plane skewed relative to the axes of the legs, and with the loop directed away from the surgical tool. Thus, in operation, when the surgeon locates a vessel and side branch of interest, the surgeon extends the retractor to cradle the vessel in the dissection cradle. Once cradled, the retractor may be fully extended to urge the vessel away from the axis of the cannula to isolate the side branch for exposure to the surgical tool. Removable, transparent tips are selectively positioned at the distal end of the cannula for performing dissection and transection via a single cannula.

6527786, Mar 4, 2003

Jun 21, 1999

09/337856

John W. Davis - Mountain View CA
David E. Hancock - San Francisco CA
Charles J. Adam - San Jose CA

Origin Medsystems, Inc. - Menlo Park CA

A61B 1704

606151, 606157, 606158

The invention is directed to a medical device for endoscopically ligating and cutting a body vessel. The device may be percutaneously inserted into a patient to perform several possible procedures. The improvements to the device include a hinged jaw capable of grasping and crimping body vessels. An improved clip delivery system and an improved clip which ligate body vessels are also described. The instrument includes a rotating cutting member which provides more efficient body vessel cutting means. Furthermore, the entire system allows a simplified and more efficient method of operation.

6752756, Jun 22, 2004

Aug 12, 2002

10/218475

John P. Lunsford - San Carlos CA
Charles J. Adam - San Jose CA
John W. Davis - Mountain View CA
Albert K. Chin - Palo Alto CA

Origin Medsystems, Inc. - Santa Clara CA

A61B 1732

600129, 600127

A retractor and a surgical tool are positioned within a cannula, and a dissection cradle of the retractor is positioned at the distal end of the cannula. The retractor includes a first portion with an axis approximately parallel to the axis of the cannula and a second portion with an axis skewed relative to the axis of the cannula. The dissection cradle is located at the distal end of the second portion of the retractor, and may include two substantially parallel, spaced legs with the retractor shaped in a loop between and in a plane skewed relative to the axes of the legs, and with the loop directed away from the surgical tool. Thus, in operation, when the surgeon locates a vessel and side branch of interest, the surgeon extends the retractor to cradle the vessel in the dissection cradle. Once cradled, the retractor may be fully extended to urge the vessel away from the axis of the cannula to isolate the side branch for exposure to the surgical tool. Removable, transparent tips are selectively positioned at the distal end of the cannula for performing dissection and transection via a single cannula.

7326178, Feb 5, 2008

Mar 22, 2004

10/807368

John P. Lunsford - San Carlos CA, US
Charles J. Adam - San Jose CA, US
John W. Davis - Mountain View CA, US
Albert K. Chin - Palo Alto CA, US

Origin Medsystems, Inc. - Santa Clara CA

A61B 1/32

600206, 600209

A retractor and a surgical tool are positioned within a cannula, and a dissection cradle of the retractor is positioned at the distal end of the cannula. The retractor includes a first portion with an axis approximately parallel to the axis of the cannula and a second portion with an axis that can be skewed relative to the axis of the cannula. The dissection cradle is located at the distal end of the second portion of the retractor, and may include two substantially parallel, spaced legs with the retractor shaped in a loop between and in a plane skewed relative to the axes of the legs, and with the loop directed away from the surgical tool. Thus, in operation, a surgeon locates a vessel and side branch of interest and extends the retractor to cradle the vessel in the dissection cradle. Once cradled, the retractor may be deflected to urge the vessel away from the axis of the cannula to isolate the side branch for exposure to the surgical tool. Removable, transparent tips are selectively positioned at the distal end of the cannula for performing dissection and transection via a single cannula.

7534243, May 19, 2009

Jun 6, 2003

10/455942

Albert K. Chin - Palo Alto CA, US
Joseph N. Lamberti - Castro Valley CA, US
Charles J. Adam - San Jose CA, US
Geoffrey H. Willis - Redwood City CA, US

Maquet Cardiovascular LLC - San Jose CA

A61B 18/12

606 49, 606 41

A tissue dissector and method for welding and severing blood vessels includes advancing the tip of a tissue-dissecting surgical instrument through tissue, with a tissue welder substantially concealed within the tip during tissue dissection. Blood vessels encountered in the tissue being dissected are selectively captivated and compressed in substantial contact with the tissue welder to elevate the temperature of the compressed tissue sufficiently to hemostatically weld and sever the compressed blood vessel.

7887558, Feb 15, 2011

Sep 28, 2004

10/951426

Arthur M. Lin - Fremont CA, US
Joseph N. Lamberti - Castro Valley CA, US
Kenny Dang - San Jose CA, US
Michael C. Stewart - San Jose CA, US
Charles J. Adam - San Jose CA, US
Justin N. Williams - San Jose CA, US

Maquet Cardiovascular LLC - San Jose CA

A61B 17/22

606159, 600 36

A vessel harvesting system that is suitable for harvesting target vessels such as the saphenous vein or radial artery for cardiac artery bypass graft surgery. The system includes a vessel harvesting tool with an elongated cannula and a plurality of surgical instruments therein for separating the target vessels from the surrounding tissue and side branches. The harvesting tool includes a modular handle unit with a base attached to the elongated cannula and a sled that can adapt the base to various types of vessel severing/securing tools, such as tissue welders, bipolar scissors, and bipolar bisectors. The handle unit may be relatively rigid and integrated with the various tool movement controls to facilitate one-handed operation by a user. A severing/securing tool rotation mechanism may be incorporated within the handle and operated by a thumbwheel or other such mechanism. The vessel harvesting system may also provide distal COinsufflation for enhanced maintenance of the operating cavity.

8241210, Aug 14, 2012

Jan 4, 2008

11/969318

John P Lunsford - San Carlos CA, US
Charles J Adam - San Jose CA, US
John W Davis - Mountain View CA, US
Albert K Chin - Palo Alto CA, US

Maquet Cardiovascular LLC - San Jose CA

A61B 17/02

600209

A surgical apparatus includes an elongate cannula having a lumen extending therein between proximal and distal ends, a retractor disposed to slide within the lumen to extend a distal end thereof beyond the distal end of the cannula, an angling device connected to the retractor near the distal end of the retractor and extending within the cannula toward the proximal end thereof for selectively deflecting the distal end of the retractor away from a central axis of the cannula in response to manual manipulation of the angling device from near the proximal end of the cannula, wherein the distal end of the retractor is configured to move, upon extension, an object away from the central axis of the cannula.

2008030, Dec 11, 2008

Jun 1, 2006

11/446024

Liming Lau - Mountain View CA, US
Peter L. Callas - Castro Valley CA, US
Michael C. Stewart - Milpitas CA, US
Geoffrey H. Willis - Mountain View CA, US
Ryan C. Abbott - San Jose CA, US
Charles J. Adam - San Jose CA, US
Kimberly D. Barkman - Redwood City CA, US
Albert K. Chin - Palo Alto CA, US
Kenny L. Dang - San Jose CA, US
Joseph N. Lamberti - Castro Valley CA, US
Arthur M. Lin - Fremont CA, US
Ravi Pamnani - Belmont CA, US

A61B 1/015
A61B 1/018

600106, 600158, 600104

Components for an endoscopic vessel harvesting system suitable for harvesting target vessels such as the saphenous vein or radial artery for cardiac artery bypass graft surgery. The main components of such systems include a vessel dissector and a vessel harvester, both of which work in conjunction with a separately provided endoscope. The vessel dissector is an elongated cannula having a blunt tip for separating layers of facial around vessels. The tip may be movable, and is typically transparent to permit viewing forward of the tip using the endoscope. Internal features of the tip may reduce glare back to the endoscope. Several devices improve visibility through the tip by reducing interference from tissue or fluid on the tip. The vessel harvester also has an elongated cannula for receiving the endoscope. Several tools within the harvester permit manipulation, severing, and sealing of vessels forward of the distal end. The tool for manipulating vessels may have a low-profile for increased visibility of operation, and may be coupled to the cannula with a damping mechanism to reduce the possibility of avulsion of the vessels. Various vessel cutting and sealing devices are provided that may accommodate various sizes of vessels and improve cutting and sealing efficacy.