Huu N Nguyen

8096985, Jan 17, 2012

May 7, 2009

12/437495

Marlone Legaspi - Fremont CA, US
Huu Nguyen - San Jose CA, US
Eugene Serina - Union City CA, US

Guided Delivery Systems Inc. - Santa Clara CA

A61M 25/00

604525, 604523, 604532, 604528

Described herein are devices and methods for guide catheters having one or more regions of increased flexibility. A flexibility region comprises one tubular segment of the guide catheter with a non-linear longitudinal seam between two non-concentric layers of material having different durometers. A non-linear seam, such as a zig-zag or sinusoidal configuration, permits controlled compression of lower durometer material between portions of higher durometer material.

20040158191, Aug 12, 2004

Feb 4, 2004

10/771804

Wilfred Samson - Saratoga CA, US
Hoa Nguyen - San Jose CA, US
Huu Nguyen - San Jose CA, US
Brady Esch - San Jose CA, US
Janine Robinson - Half Moon Bay CA, US

A61M037/00
H05B001/00
A61F007/12

604/006130, 604/113000

An apparatus and method are described for efficiently cooling the myocardium while minimizing blood dilution as well as volume buildup within the patient. A flow of cooled fluid is conducted through a percutaneously introduced catheter into the aorta where only a portion thereof is discharged while the remainder is withdrawn from the patient. The much greater flow rate through the catheter that can thereby be maintained without adverse physiological effect serves to minimize the heat gained by the fluid as a result of the catheter's immersion in blood at body temperature. By arranging the catheter such that the return flow surrounds and thereby insulates the supply flow, even colder fluid can be delivered to the myocardium.

20050080374, Apr 14, 2005

Jul 23, 2004

10/897498

Brady Esch - San Jose CA, US
Hoa Nguyen - San Jose CA, US
Huu Nguyen - San Jose CA, US
Janine Robinson - Half Moon Bay CA, US
Manny Javier - Santa Clara CA, US

A61M037/00

604006130

The present invention provides an apparatus and method for induction of therapeutic hypothermia of the heart by selective hypothermic perfusion of the myocardium through the patient's coronary arteries. The apparatus consists of a guiding catheter into which blood is drawn from the aorta, directed over a heat exchanger and expelled directly into a coronary artery.

20090222083, Sep 3, 2009

Feb 5, 2009

12/366553

Huu NGUYEN - San Jose CA, US
Son Nguyen - San Jose CA, US
Eugene Serina - Union City CA, US
Tammy Y. Tam - San Francisco CA, US

Guided Delivery Systems Inc. - Santa Clara CA

A61B 17/03
A61F 2/24

623 211, 606232

Described herein are devices and methods for delivering implants that comprise multiple coupled anchors. The anchors are secured to tissue using a multi-opening guide tunnel that is configured to releasably retain one or more portions of the implant located between two of the anchors. The releasable retention of one or more intervening portions of the implant maintains the position of the implant and the guide tunnel until the implant is secured to the tissue. The multi-opening guide tunnel permits securement of the multiple anchors without requiring repositioning of the guide tunnel for each anchor.

20100094248, Apr 15, 2010

Oct 6, 2009

12/574563

Huu Nguyen - San Jose CA, US
Son Nguyen - San Jose CA, US
Eugene Serina - Union City CA, US
Tammy Y. Tam - San Francisco CA, US

Guided Delivery Systems Inc. - Santa Clara CA

A61M 31/00

604500

Described herein are devices and methods for delivering implants that comprise multiple coupled anchors. The anchors are secured to tissue using a multi-opening guide tunnel that is configured to releasably retain one or more portions of the implant located between two of the anchors. The releasable retention of one or more intervening portions of the implant maintains the position of the implant and the guide tunnel until the implant is secured to the tissue. The multi-opening guide tunnel permits securement of the multiple anchors without requiring repositioning of the guide tunnel for each anchor.

20120101442, Apr 26, 2012

Dec 8, 2011

13/315154

Marlone Legaspi - Fremont CA, US
Huu Nguyen - San Jose CA, US
Eugene Serina - Fremont CA, US

Guided Delivery Systems Inc. - Santa Clara CA

A61M 25/04
A61M 25/00

604175, 604528

Described herein are devices and methods for guide catheters having one or more regions of increased flexibility. A flexibility region comprises one tubular segment of the guide catheter with a non-linear longitudinal seam between two non-concentric layers of material having different durometers. A non-linear seam, such as a zig-zag or sinusoidal configuration, permits controlled compression of lower durometer material between portions of higher durometer material.

60686294, May 30, 2000

Dec 15, 1998

9/213332

Michel Haissaguerre - Talence, FR
Walter Bruszewski - San Francisco CA
Le Le - San Jose CA
Mark Maguire - San Jose CA
John Gaiser - Mountain View CA
Huu Nguyen - San Jose CA

Medtronic, Inc. - Minneapolis MN

A61B 1739

606 41

A steerable electrophysiology catheter includes a shaft having a distal ablation segment with one or more electrodes coupled to a source of electrical energy by a connector extending through the shaft. The distal ablation segment of the shaft is movable between a collapsed configuration sized for percutaneous introduction into the patient and/or endoluminal delivery to the target site and an expanded configuration, in which the distal ablation segment forms a substantially continuous surface transverse to the shaft axis for engaging the heart tissue and creating a linear lesion thereon. The catheter includes one or more force element(s) positioned to apply an axial force between the distal and proximal ends of the ablation segment. The force element(s) provide a sufficiently uniform force against the distal ablation segment to establish continuous contact pressure between the electrodes and the patient's heart tissue. This contact pressure allows the surgeon to engage the entire length of the distal ablation segment against the heart tissue to provide a relatively long linear lesion on this tissue.

59162139, Jun 29, 1999

Feb 4, 1997

8/794804

Michel Haissaguerre - Talence, FR
Walter Bruszewski - San Francisco CA
Le Le - San Jose CA
Mark Maguire - San Jose CA
John Gaiser - Mountain View CA
Huu Nguyen - San Jose CA

Medtronic, Inc. - Minneapolis MN

A61B 1739

606 41

A steerable electrophysiology catheter includes a shaft having a distal ablation segment with one or more electrodes coupled to a source of electrical energy by a connector extending through the shaft. The distal ablation segment of the shaft is movable between a collapsed configuration sized for percutaneous introduction into the patient and/or endoluminal delivery to the target site and an expanded configuration, in which the distal ablation segment forms a substantially continuous surface transverse to the shaft axis for engaging the heart tissue and creating a linear lesion thereon. The catheter includes one or more force element(s) positioned to apply an axial force between the distal and proximal ends of the ablation segment. The force element(s) provide a sufficiently uniform force against the distal ablation segment to establish continuous contact pressure between the electrodes and the patient's heart tissue. This contact pressure allows the surgeon to engage the entire length of the distal ablation segment against the heart tissue to provide a relatively long linear lesion on this tissue.