Thuzar K Han

6936055, Aug 30, 2005

Mar 10, 2000

09/523585

Christopher G. M. Ken - San Mateo CA, US
Thuzar K. Han - Fremont CA, US
Matthew Yingwing Hui - San Jose CA, US
Liem Ho - Mountain View CA, US

SciMe Life Systems, Inc. - Maple Grove MN

A61B017/00

606157, 606151

This is a device for bridging the neck of either a wide-necked or narrow-necked aneurysm in the vasculature. In general, it is a device used to stabilize the presence of vaso-occlusive devices (such as helically wound coils) in the aneurysm. The device preferably is delivered by a core wire which terminates in an electrolytically severable joint. The core wire will often be insulated. The retainer assembly itself is also attached to the electrolytic joint and typically has a number of array elements which are intended to be resident within the aneurysm after the device is deployed from the distal end of a catheter. After deployment of this retainer, the aneurysm is at least partially filled with a vaso-occlusive device such as helically wound coils.

20010026666, Oct 4, 2001

May 23, 2001

09/865021

David Ferrera - Manhattan Beach CA, US
Nicholas Debeer - Burlingame CA, US
Thuzar Han - Fremont CA, US
Daniel Kurz - Sunnyvale CA, US
Rose Wong - Sunnyvale CA, US

G02B006/16
G02B006/36

385/123000, 385/086000, 385/118000, 385/117000

The variable stiffness optical fiber shaft includes a optical fiber, and at least one coaxial layer of heat shrink polymer disposed over the optical fiber of a length shorter than the optical fiber, to provide variations in stiffness along the length of the shaft. The variable stiffness optical fiber shaft preferably includes a plurality of coaxial layers of heat shrink polymer encapsulating the optical fiber, extending from the proximal end of the optical fiber toward the distal end, the plurality of coaxial layers having different lengths to provide said optical fiber shaft with varying stiffness over the length of the optical fiber shaft. The plurality of coaxial layers can be arranged in successive progressively shorter coaxial layers, and can be formed of heat shrink polymeric material, such as polyethylene, PTFE, PEEK, PET or PPS. The variable stiffness optical fiber shaft can also include a coaxial strain relief member disposed over the outer coaxial polymer layers at the proximal end, and a connecting hub disposed over the strain relief member. The variable stiffness optical fiber shaft can also include a hypo tube attached to the optical fiber, and a reinforcing braid attached over the optical fiber, as well as a radiopaque marker that can be a reinforcing coil. A shape memory collar can also be attached over the distal end of the optical fiber, with a distal sheath extending over a portion of the shape memory collar. A hub can also be attached over the proximal portion of the optical fiber. A method of constructing the variable stiffness optical fiber shaft is also provided.

20050187568, Aug 25, 2005

Feb 20, 2004

10/783783

Alan Klenk - San Jose CA, US
Hai Le - San Jose CA, US
Thuzar Han - Fremont CA, US

A61B017/08

606153000

A patent foramen ovale closure device and method are provided. The device is deployed at the foramen ovale to secure the septum primum and septum secundum together, thus sealing the patent foramen ovale. In one embodiment, the closure device is a coil that is delivered through the septum secundum and septum primum in an axially elongated state using a tissue piercing structure. After being delivered, the coil is released, causing the coil to axially shorten to pinch the septum primum and septum secundum together.

61937088, Feb 27, 2001

Mar 24, 1999

9/276132

Christopher G. M. Ken - San Mateo CA
Thuzar K. Han - Fremont CA
Matthew Yingwing Hui - San Jose CA
Liem Ho - Mountain View CA

SciMed Life Systems, Inc. - Maple Grove MN

A61B 1700

606 1

This is a device for bridging the neck of either a wide-necked or narrow-necked aneurysm in the vasculature. In general, it is a device used to stabilize the presence of vaso-occlusive devices (such as helically wound coils) in the aneurysm. The device preferably is delivered by a core wire which terminates in an electrolytically severable joint. The core wire will often be insulated. The retainer assembly itself is also attached to the electrolytic joint and typically has a number of array elements which are intended to be resident within the aneurysm after the device is deployed from the distal end of a catheter. After deployment of this retainer, the aneurysm is at least partially filled with a vaso-occlusive device such as helically wound coils.

56039913, Feb 18, 1997

Sep 29, 1995

8/539902

David Kupiecki - Cupertino CA
Thuzar K. Han - Fremont CA

Target Therapeutics, Inc. - Fremont CA

C08F 248

427508

This invention is in the general field of surgical instruments and, in particular, catheters. Specifically, it relates to procedures for coating the interior surfaces of surgical devices with a cross-linkable lubricious polymer, preferably one which is hydrophilic. These catheters may be variously used in cardiovascular and endovascular procedures to deliver diagnostic, therapeutic, or vaso-occlusive agents or devices to a target site within a human or animal body and to catheters used to guide other catheters to a particular site in that body. The interior of the catheters are coated using the noted procedure in such a way that the interior is exceptionally slippery and very durable.

60865776, Jul 11, 2000

Jul 30, 1998

9/126705

Christopher G. M. Ken - San Mateo CA
Thuzar K. Han - Fremont CA
Matthew Yingwing Hui - San Jose CA
Liem Ho - Mountain View CA

Scimed Life Systems, Inc. - Maple Grove MN

A61M 2900
A61B 1700

606 1

This is a device for bridging the neck of either a wide-necked or narrow-necked aneurysm in the vasculature. In general, it is a device used to stabilize the presence of vaso-occlusive devices (such as helically wound coils) in the aneurysm. The device preferably is delivered by a core wire which terminates in an electrolytically severable joint. The core wire will often be insulated. The retainer assembly itself is also attached to the electrolytic joint and typically has a number of array elements which are intended to be resident within the aneurysm after the device is deployed from the distal end of a catheter. After deployment of this retainer, the aneurysm is at least partially filled with a vaso-occlusive device such as helically wound coils.

62402315, May 29, 2001

Dec 22, 1998

9/219572

David A. Ferrera - Manhattan Beach CA
Nicholas C. Debeer - San Francisco CA
Thuzar Han - Fremont CA
Daniel R. Kurz - Sunnyvale CA
Rose Y. Wong - Sunnyvale CA

Micrus Corporation - Mountain View CA

G02B 604
A61B 1822

385115

The variable stiffness optical fiber shaft includes a optical fiber, and at least one coaxial layer of heat shrink polymer disposed over the optical fiber of a length shorter than the optical fiber, to provide variations in stiffness along the length of the shaft. The variable stiffness optical fiber shaft preferably includes a plurality of coaxial layers of heat shrink polymer encapsulating the optical fiber, extending from the proximal end of the optical fiber toward the distal end, the plurality of coaxial layers having different lengths to provide said optical fiber shaft with varying stiffness over the length of the optical fiber shaft. The plurality of coaxial layers can be arranged in successive progressively shorter coaxial layers, and can be formed of heat shrink polymeric material, such as polyethylene, PTFE, PEEK, PET or PPS. The variable stiffness optical fiber shaft can also include a coaxial strain relief member disposed over the outer coaxial polymer layers at the proximal end, and a connecting hub disposed over the strain relief member. The variable stiffness optical fiber shaft can also include a hypo tube attached to the optical fiber, and a reinforcing braid attached over the optical fiber, as well as a radiopaque marker that can be a reinforcing coil.