Alex J Lim

US Patent:

7783006, Aug 24, 2010

Filed:

Oct 8, 2004

Appl. No.:

10/962247

Inventors:

Daren L. Stewart - Belmont CA, US
Paul A. Lovoi - Saratoga CA, US
Thomas W. Rusch - Hopkins MN, US
Alex Lim - Santa Clara CA, US
Darius Francescatti - Barrington IL, US

Assignee:

Xoft, Inc. - Sunnyvale CA

International Classification:

G21K 5/00

US Classification:

378 64, 600 1, 600 2, 600 3, 600 4, 378 65, 378119

Abstract:

Methods and apparatus are described for irradiating living tissue via a cavity or lumen, using an inflatable balloon applicator. In a preferred embodiment the applicator balloon has a balloon skin with x-ray contrast material in relatively low concentration, so that an outline of the balloon will appear sharply when imaged externally. In another preferred embodiment the balloon catheter has a drain for withdrawing liquids from the cavity, which may include channels or texture on the exterior of the balloon. Methods are described for using a switchable miniature x-ray tube, variable as to voltage and current, to achieve accuracy in an isodose profile.

US Patent:

7885382, Feb 8, 2011

Filed:

Jun 18, 2007

Appl. No.:

11/820238

Inventors:

Daren L. Stewart - Belmont CA, US
Paul A. Lovoi - Saratoga CA, US
Thomas W. Rusch - Hopkins MN, US
Alex Lim - Santa Clara CA, US
Darius Francescatti - Barrington IL, US

Assignee:

Xoft, Inc. - Sunnyvale CA

International Classification:

G21K 5/00

US Classification:

378 64, 378 65, 378119, 600 1, 600 2, 600 3, 600 4, 600 5, 600 6, 600 7, 600 8, 600452, 600459, 128897, 128898, 128899

Abstract:

Methods and apparatus are described for irradiating living tissue via a cavity or lumen, using an inflatable balloon applicator. In a preferred embodiment the applicator balloon has a balloon skin with x-ray contrast material in relatively low concentration, so that an outline of the balloon will appear sharply when imaged externally. In another preferred embodiment the balloon catheter has a drain for withdrawing liquids from the cavity, which may include channels or texture on the exterior of the balloon. Methods are described for using a switchable miniature x-ray tube, variable as to voltage and current, to achieve accuracy in an isodose profile.

US Patent:

20050015084, Jan 20, 2005

Filed:

Aug 2, 2004

Appl. No.:

10/909668

Inventors:

Richard Hill - Berkeley CA, US
Alex Lim - Santa Clara CA, US
Tim Huynh - Santa Clara CA, US
Eric Chan - Newark CA, US

International Classification:

A61B018/14

US Classification:

606041000

Abstract:

An electrophysiology (EP) device suitable for ablating tissue within a patient's body lumen. The EP device of the invention generally comprises an elongated shaft having a distal shaft section with a helical shape and at least one electrode on an exterior portion thereof. One aspect of the invention comprises a method of performing a medical procedure, such as treating a patient for atrial arrhythmia, by forming a lesion using an EP device embodying features of the invention.

US Patent:

20050080313, Apr 14, 2005

Filed:

Oct 10, 2003

Appl. No.:

10/683885

Inventors:

Daren Stewart - Belmont CA, US
Paul Lovoi - Saratoga CA, US
Thomas Rusch - Hopkins MN, US
Alex Lim - Santa Clara CA, US
Darius Francescatti - Barrington IL, US

International Classification:

A61M036/00
A61B005/00

US Classification:

600003000, 600424000, 600436000

Abstract:

An applicator for facilitating radiation treatment in a body cavity, particularly post resection, provides for superior wound closure management, with an integrated drain and a flexible main shaft that permits further treatments at intervals without disturbing the wound closure. The drain includes channels in the shaft, and the surface of an expandable balloon of the applicator may have features that help channel the flow of drain liquids toward the cavity entrance. Non-spherical, irregular geometries of balloons are achieved in several different ways. In some embodiments multiple balloons are included, either an inner and outer balloon or a series of balloons extending outwardly from the main shaft. Non-balloon applicators are also disclosed.

US Patent:

20130079855, Mar 28, 2013

Filed:

Sep 28, 2011

Appl. No.:

13/247073

Inventors:

Richard A. Helkowski - Redwood City CA, US
Jeremy T. Dabrowiak - Redwood City CA, US
Venkata Vishnu Gurukula - Mountain View CA, US
Alex L. Lim - Santa Clara CA, US

International Classification:

A61F 7/12

US Classification:

607105

Abstract:

A catheter includes a working fluid supply path communicating with a source of working fluid. The catheter also includes a working fluid return path communicating with the working fluid supply path to return working fluid from the supply path to the source of working fluid. At least one of the paths is contained in a distal heat exchange region of the catheter, where the distal heat exchange region includes first and second helical paths and is made of a shape memory material.

US Patent:

20130079856, Mar 28, 2013

Filed:

Sep 28, 2011

Appl. No.:

13/247122

Inventors:

Jeremy T. Dabrowiak - Redwood City CA, US
Alex L. Lim - Santa Clara CA, US
Venkata Vishnu Gurukula - Mountain View CA, US
Richard A. Helkowski - Redwood City CA, US

International Classification:

A61F 7/12

US Classification:

607105

Abstract:

A patient temperature control catheter includes working fluid supply and return lumens through which working fluid circulates to exchange heat with a patient in whom the catheter is positioned. At least one lumen is defined by plural coils axially spaced from each other. At least a first coil is a large coil that inflates with working fluid to seat against a wall of a blood vessel in which the catheter is positioned, with blood flowing through the coil so as not to block blood flow in the vessel.

US Patent:

20130079858, Mar 28, 2013

Filed:

Sep 28, 2011

Appl. No.:

13/247044

Inventors:

Richard A. Helkowski - Redwood City CA, US
Jeremy T. Dabrowiak - Redwood City CA, US
Alex L. Lim - Santa Clara CA, US
Venkata Vishnu Gurukula - Mountain View CA, US

International Classification:

A61F 7/12

US Classification:

607106, 607113

Abstract:

A transatrial intravascular temperature management catheter has a lower heat exchange segment positionable in the inferior vena cava and an upper heat exchange segment positionable in the superior vane cava, with a connecting segment lying between the two and positionable in the right atrium. A temperature sensor on the distal tip of the upper heat exchange segment provides accurate core body temperature signals for feedback purposes since the blood flowing past the sensor has not yet reached the heat exchange segment.

US Patent:

56906609, Nov 25, 1997

Filed:

Apr 2, 1996

Appl. No.:

8/626688

Inventors:

Barry J. Kauker - Soquel CA
Alex L. Lim - San Francisco CA

Assignee:

Stryker Corporation - Kalamazoo MI

International Classification:

A61B 1732

US Classification:

606180

Abstract:

A powered rotatable surgical tissue working tool for chucking in a powered rotating surgical handpiece includes a tubular elongate outer member having a distal tip portion angled off the central axis of the proximal portion of such tubular outer member, by reason of a angled portion therebetween. A rotatable elongate inner member extends coaxially and rotatably within the tubular outer member and has a rotatably drivable proximal portion, a distal tip portion for tissue working interaction with the distal tip portion of the outer member, and a flexibly bendable portion therebetween rotatably housed within the angled portion of the outer member. A suction passage communicates between the distal tip portions thereof and the handpiece for permitting suction withdrawal of flowable materials from a surgical site axially through such suction passage and to a suction source. An annular space is maintained between the flexible portion of the inner member and the angled portion of the outer member despite rotation of the inner member.

Address:

155 24 Ave APT 1, San Francisco, CA 94121

Phone:

(415)6235091

VIN:

WA1LFAFP1CA070394

Make:

AUDI

Model:

Q5

Year:

2012