Vidya J Nayak

US Patent:

6344045, Feb 5, 2002

Filed:

Aug 17, 2000

Appl. No.:

09/642961

Inventors:

Florencia Lim - Union City CA
Christopher L. Haig - Rhode St. Genese, BE
Vidya J. Nayak - Cupertino CA
Joann Heberer - Redwood City CA
Robert D. Ainsworth - Scotts Valley CA

Assignee:

Advanced Cardiovascular Systems, Inc. - Santa Clara CA

International Classification:

A61F 1100

US Classification:

606108, 606192, 604 96, 604101, 604194

Abstract:

The present invention is directed to a gauging system and method for using the same for determining the size of a lesion within a patients body prior to stenting the lesion. In one embodiment the gauging system includes a catheter having an elongated shaft with proximal and distal ends, and an outer sheath formed of a compliant material and disposed about at least a portion of the catheter elongated shaft and being slidable over the same. In another embodiment, the gauging system further includes a radially expandable member formed of the same or different compliant material mounted on a distal section of the shaft and has an interior chamber in fluid communication with an inflation lumen extending within at least a portion of a distal shaft section to a location spaced proximally from the shaft distal end.

US Patent:

6520934, Feb 18, 2003

Filed:

Dec 29, 1999

Appl. No.:

09/474668

Inventors:

Jeong S. Lee - Diamond Bar CA
Vidya Nayak - Cupertino CA
John Schreiner - Hemet CA
Christine Gutting - Murrieta CA
Edwin Wang - Tustin CA
Gary Heinemann - Campbell CA
Roseminda White - Wildomar CA

Assignee:

Advanced Cardiovascular Systems, Inc. - Santa Clara CA

International Classification:

A61M 2900

US Classification:

6041031

Abstract:

A catheter assembly comprising a shaft and at least one flexible radiopaque marker affixed with the shaft. Flexibility of radiopaque marker is achieved by using a segmented band of radiopaque material or a coiled band formed by winding a wire or hollow tube filled with radiopaque material. The flexible radiopaque marker may be affixed with the shaft by an adhesive, by swaging, by crimping, by soldering, or by spring-action tension fit against the shaft.

US Patent:

6527740, Mar 4, 2003

Filed:

Dec 22, 1999

Appl. No.:

09/470877

Inventors:

Gregg A. Jackson - Mountain View CA
Jenny E. Tsien - San Jose CA
Vidya J. Nayak - Cupertino CA
Andree L. Barker - San Jose CA

Assignee:

Advanced Cardiovascular Systems, Inc. - Santa Clara CA

International Classification:

A61M 3100

US Classification:

60410305

Abstract:

A regrooming device for a balloon catheter, comprising a tubular member having a proximal section, a distal section, and an inner lumen extending therein configured to receive a balloon of a balloon catheter; and a mandrel disposed within the inner lumen and having a proximal end configured to enter a guide wire lumen at a distal section of the balloon catheter to facilitate guiding the distal section of the catheter into the inner lumen of the regrooming device, and a distal end secured to the distal section of the tubular member.

US Patent:

8603634, Dec 10, 2013

Filed:

Mar 23, 2009

Appl. No.:

12/409129

Inventors:

Jessica Renee DesNoyer - San Jose CA, US
Stephen Dirk Pacetti - San Jose CA, US
Vidya Nayak - Cupertino CA, US
Lothar Kleiner - Los Altos CA, US

Assignee:

Abbott Cardiovascular Systems Inc. - Santa Clara CA

International Classification:

A61K 31/765
A61K 33/00
A61F 2/06
C08L 77/12

US Classification:

4284231, 424 7837, 424422, 424423, 424426, 424486, 4284744, 525420, 525434, 528288, 528302, 528307, 528308, 528323, 528324, 528325, 528326, 5283291, 528330, 528331, 528332, 528335, 604 48, 604500, 6048901, 623 11

Abstract:

This invention relates to poly(ester amide)s (PEAs) comprising inactivated terminal amino and carboxyl groups, methods of synthesizing the inactivated PEAs and uses for them in the treatment of vascular diseases.

US Patent:

20060089485, Apr 27, 2006

Filed:

Oct 27, 2004

Appl. No.:

10/975247

Inventors:

Jessica DesNoyer - San Jose CA, US
Stephen Pacetti - San Jose CA, US
Vidya Nayak - Cupertino CA, US
Lothar Kleiner - Los Altos CA, US

International Classification:

C08G 63/02
C08G 69/08

US Classification:

528272000, 528310000

Abstract:

Provided herein is an end-capped poly(ester amide) PEA) polymer and the method of making the polymer. The PEA polymer is substantially free of active amino end groups and/or activated carboxyl groups. The PEA polymer can form a coating on an implantable device, one example of which is a stent. The coating can optionally include a biobeneficial material and/or optionally with a bioactive agent. The implantable device can be used to treat or prevent a disorder such as one of atherosclerosis, thrombosis, restenosis, hemorrhage, vascular dissection or perforation, vascular aneurysm, vulnerable plaque, chronic total occlusion, claudication, anastomotic proliferation for vein and artificial grafts, bile duct obstruction, ureter obstruction, tumor obstruction, and combinations thereof.

US Patent:

44734506, Sep 25, 1984

Filed:

Apr 15, 1983

Appl. No.:

6/485572

Inventors:

Vidya J. Nayak - San Jose CA
James P. Reed - San Francisco CA
Jeff C. Curtis - Redwood City CA

Assignee:

Raychem Corporation - Menlo Park CA

International Classification:

C23F 1300

US Classification:

204147

Abstract:

Electrodes for electrochemical processes, especially anodes for impressed current systems for corrosion prevention, have an electrochemically active outer surface comprising a first element, preferably a conductive polymer element, and a plurality of second elements, preferably carbon or graphite fibers, which are partially embedded in the second element and which are electrochemically more active than the first element.

US Patent:

51375133, Aug 11, 1992

Filed:

Jul 2, 1990

Appl. No.:

7/547674

Inventors:

Peter R. McInnes - Surrey, GB2
Vidya J. Nayak - Cupertino CA
Edward A. Estrada - Cupertino CA

Assignee:

Advanced Cardiovoascular Systems, Inc. - Santa Clara CA

International Classification:

A61M 2900

US Classification:

604 96

Abstract:

A perfusion-type intravascular catheter having an outer sheath disposed about the catheter body with a sealing element on the distal end of the sheath to seal off the distal end thereof at a location distal to perfusion ports provided in the wall of the catheter body proximal to an expandable working member such as an inflatable balloon whereby blood can be directed through the proximal perfusion ports into an inner lumen extending through the working member and out of perfusion ports provided into the walls of the catheter distal to the expandable working member to ensure that ischemic conditions do not occur distal to the catheter when the working member is expanded to perform a vascular procedure therein.

US Patent:

20150267000, Sep 24, 2015

Filed:

Jun 5, 2015

Appl. No.:

14/732568

Inventors:

- Santa Clara CA, US
Stephen Dirk Pacetti - San Jose CA, US
Vidya Nayak - Cupertino CA, US
Lothar Kleiner - Los Altos CA, US

International Classification:

C08G 69/48
A61L 31/04
A61L 31/06
A61L 31/16
C08G 69/44
A61L 31/10

Abstract:

This invention relates to poly(ester amide)s (PEAs) comprising inactivated terminal amino and carboxyl groups, methods of synthesizing the inactivated PEAs and uses for them in the treatment of vascular diseases.