Quang Kiem Tran

US Patent:

6524299, Feb 25, 2003

Filed:

Apr 9, 1997

Appl. No.:

08/838685

Inventors:

Quang Q. Tran - Fremont CA
Marlowe Patterson - Milpitas CA
Henry Nita - Milpitas CA
Paul C. Slaikeu - Hayward CA

Assignee:

Target Therapeutics, Inc. - Fremont CA

International Classification:

A61M 2500

US Classification:

604523

Abstract:

This invention is to a minimally invasive surgical device. In particular, the invention relates to an infusion catheter which may be used in cardiovascular and endovascular procedures to deliver diagnostic, therapeutic, or vasoocclusive agents to a target site accessible through the vasculature. The device is a flow-directed infusion catheter having a variety of sections of different flexibilities with tapered junctions between those sections. The inventive catheter is directed to that target site by a flow of blood to the site.

US Patent:

6527763, Mar 4, 2003

Filed:

Sep 6, 2001

Appl. No.:

09/949443

Inventors:

Victor C. Esch - San Francisco CA
Quang Q. Tran - Fremont CA
R. Rox Anderson - Lexington MA

Assignee:

Endovasix, Inc. - Belmont CA

International Classification:

A61B 1818

US Classification:

606 2, 606 8, 606127

Abstract:

The invention encompasses methods and apparatus for pumping fluid from one location to another through the repetitive expansion and collapse of bubbles generated as a result of the absorption of repetitive pulses of radiation in a fluid. This pumping phenomenon can be used to aid removal of a total or partial occlusion in a body passage by emulsifying the occlusion with acoustic shock and pressure waves or by causing mechanically disrupting the occlusive material.

US Patent:

6547779, Apr 15, 2003

Filed:

Jun 9, 1999

Appl. No.:

09/328514

Inventors:

Marc-Alan Levine - San Francisco CA
Eduardo U. Sucgang - South San Francisco CA
Stephen J. Hebert - Berkeley CA
Estela D. Gatchalian - San Jose CA
Quang Q. Tran - Fremont CA
Victor C. Esch - San Francisco CA

Assignee:

Endovasix, Inc. - Belmont CA

International Classification:

A61B 1818

US Classification:

606 7, 606 13, 606 15, 606128, 128898, 607 89

Abstract:

Methods and apparatus for creating fluid flow from one location to another are disclosed. The fluid flow is created via the absorption of repetitive pulses of radiation in a fluid to generate bubbles that expand and collapse repetitively. This fluid mechanism, or pumping phenomenon, can be used to aid removal of a total or partial occlusion in a body passage by disrupting a surface of the occlusion with acoustic shock and pressure waves and/or by causing mechanical disruption of the occlusive material. Appropriate selection of materials and particular constructions improve apparatus flexibility.

US Patent:

6679893, Jan 20, 2004

Filed:

Nov 16, 2000

Appl. No.:

09/715667

Inventors:

Quang Q. Tran - Redwood City CA

Assignee:

Chestnut Medical Technologies, Inc. - Menlo Park CA

International Classification:

A61B 1722

US Classification:

606127

Abstract:

The invention is directed to a grasping device and system and the method of using the device and system for capturing a thromboembolism and other objects or masses within a patients body lumen, particularly from within a patients cerebral blood vessels. The grasping device has an elongated core member with a grasping assembly of arms on the distal end of the core member which have an expanded and a contracted configuration. The expanded configuration permits the arms to surround an object such as a thrombus or clot and a contracted configuration to grasp or capture the object. The distal ends of the arms are provided with object grasping members such as one or more teeth to facilitate the capture and removal of the object. A delivery catheter and a shorter guide catheter aid in delivering the grasping device to the desired intravascular location within the patient.

US Patent:

7699056, Apr 20, 2010

Filed:

Jun 10, 2004

Appl. No.:

10/866493

Inventors:

Quang Tran - Redwood City CA, US
Christopher A. Stout - San Mateo CA, US
Elisa J. Aldridge - Menlo Park CA, US
Betsy Swann - Grass Valley CA, US

Assignee:

Conceptus, Inc. - Mountain View CA

International Classification:

A61F 6/06
A61F 6/14
A61F 13/00
A61M 1/00
A61M 5/178

US Classification:

128831, 128830, 128832, 128833, 128839, 604 27, 604 28, 604 36, 424422, 424430

Abstract:

Devices, such as medical devices for inhibiting conception, and methods of using and/or making these devices. In one aspect of the disclosure, a medical device has a delivery system and a first insert, which is removably coupled to the delivery system and which is designed to be deployed within a portion of a first fallopian tube, and a second insert, which is removably coupled to the delivery system and which is designed to be deployed within a portion of a second fallopian tube. Other aspects of the disclosure include, among other things, inserts made from one or more polymers;.

US Patent:

8147534, Apr 3, 2012

Filed:

May 25, 2005

Appl. No.:

11/136398

Inventors:

Aaron Lee Berez - Menlo Park CA, US
Quang Quoc Tran - Redwood City CA, US

Assignee:

Tyco Healthcare Group LP - Mansfield MA

International Classification:

A61F 2/06

US Classification:

623 111, 623 112

Abstract:

A system and method for deploying an occluding device that can be used to remodel an aneurysm within the vessel by, for example, neck reconstruction or balloon remodeling. The system comprises an introduer sheath and an assembly for carrying the occluding device. The assembly includes an elongated flexible member having an occluding device retaining member for receiving a first end of the occluding device, a proximally positioned retaining member for engaging a second end of the occluding device and a support surrounding a portion of the elongated flexible member over which the occluding device can be positioned.

US Patent:

8236042, Aug 7, 2012

Filed:

Apr 8, 2009

Appl. No.:

12/420383

Inventors:

Aaron Lee Berez - Menlo Park CA, US
Quang Quoc Tran - Redwood City CA, US

Assignee:

Tyco Healthcare Group LP - Mansfield MA

International Classification:

A61F 2/06

US Classification:

623 112, 623 111

Abstract:

A system and method for deploying an occluding device that can be used to remodel an aneurysm within the vessel by, for example, neck reconstruction or balloon remodeling. The system comprises an introducer sheath and an assembly for carrying the occluding device. The assembly includes an elongated flexible member having an occluding device retaining member for receiving a first end of the occluding device, a proximally positioned retaining member for engaging a second end of the occluding device and a support surrounding a portion of the elongated flexible member over which the occluding device can be positioned.

US Patent:

8257421, Sep 4, 2012

Filed:

Apr 6, 2009

Appl. No.:

12/419031

Inventors:

Aaron Lee Berez - Menlo Park CA, US
Quang Quoc Tran - Redwood City CA, US

Assignee:

Tyco Healthcare Group LP - Mansfield MA

International Classification:

A61F 2/06

US Classification:

623 111, 623 112

Abstract:

A system and method for deploying an occluding device that can be used to remodel an aneurysm within the vessel by, for example, neck reconstruction or balloon remodeling. The system comprises an introducer sheath and an assembly for carrying the occluding device. The assembly includes an elongated flexible member having an occluding device retaining member for receiving a first end of the occluding device, a proximally positioned retaining member for engaging a second end of the occluding device and a support surrounding a portion of the elongated flexible member over which the occluding device can be positioned.