Sung Hwan Chun

US Patent:

6746446, Jun 8, 2004

Filed:

Aug 4, 2000

Appl. No.:

09/633054

Inventors:

Sung Chun - Palo Alto CA
Reynaldo P. Hilario - Mountain View CA
Tim Ngeo Huynh - Santa Clara CA
Mahmoud R. Seraj - Mountain View CA
Robert Obara - Fremont CA

Assignee:

Cardima, Inc. - Fremont CA

International Classification:

A61B 1818

US Classification:

606 41, 604 9504

Abstract:

An intravascular electrophysiology (EP) device for the mapping and/or formation of lesions along the isthmus region of a heart that has particular utility in the treatment of atrial flutter. The EP device of the invention has an elongated shaft with a proximal section, a compound-curved or modified pigtail-shaped distal section, and a plurality of at least partially exposed electrodes disposed on an outer surface of the distal section. The electrodes are spaced along a length of the distal section and may be interspersed with at least one temperature sensor located between electrodes. The shape of the distal end of the device enables manipulation of the device by inserting its distal end in the tricuspid valve and retracting the device to bias the section having electrodes along the isthmus to achieve acceptable contact with the region so high frequency (e. g. , RF) electrical energy delivered to the electrodes on the distal section of the EP device will form a lesion. Sections of the isthmus where treatment is desired but not reached by the section of the device biased against tissue by retraction may be ablated by repeating the steps of hooking the tricuspid valve at a different end location of the device and retracting to bias the electrodes against different tissue, simply advancing the section with electrodes to the desired site or retracting the device so a tip connected to an RF source will drop into a desired site where ablation may occur.

US Patent:

20230128367, Apr 27, 2023

Filed:

Oct 25, 2022

Appl. No.:

17/973364

Inventors:

- Milpitas CA, US
Eric Swenson - Soquel CA, US
Christopher Kalima - Mammoth Lakes CA, US
Oleg Mürk - San Francisco CA, US
Sung Yong Chun - Millbrae CA, US
Michael Manente - Sudbury MA, US

Assignee:

Intertrust Technologies Corporation - Milpitas CA

International Classification:

G06F 21/62

Abstract:

This disclosure relates to, among other things, secure data rights management and governance. Certain embodiments disclosed herein provide for a data access control and management architecture that enforces one or more rules, restrictions, and/or configurations in connection with managing access requests to data. In various embodiments, one or more of the enforced rules, restrictions, and/or configurations may articulate access conditions that depend, at least in part, on a source, physical location, and/or an execution environment associated with a data access request. In this manner, data access may be managed and/or governed based, at least in part, on the source, location, system and/or associated environment requesting access to the data.

US Patent:

20140298207, Oct 2, 2014

Filed:

Mar 28, 2014

Appl. No.:

14/229650

Inventors:

- Sunnyvale CA, US
David P. MAHER - Livermore CA, US
Daniel VICKERY - San Francisco CA, US
Peter JONES - San Francisco CA, US
Sung CHUN - Millbrae CA, US
Tauseef BASHIR - San Francisco CA, US

International Classification:

G06F 3/0482

US Classification:

715753

Abstract:

This disclosure relates to systems and methods for enabling collaboration and/or task management between one or more users. Certain embodiments facilitate task management in connection with secure, governed, and/or audited collaboration and/or document management services using an interface that includes social communication features. Further embodiments relate to search operations returning active and/or functional search results that a user may interact with in connection with performing various activities in connection with a collaboration and/or document management service.