Michael S Yang

US Patent:

7168694, Jan 30, 2007

Filed:

Jan 22, 2004

Appl. No.:

10/763710

Inventors:

Xuan S. Bui - Culver City CA, US
Michael Yang - Cerritos CA, US
Gilles Lefebvre - Torrance CA, US

Assignee:

Sakura Finetek U.S.A., Inc. - Torrance CA

International Classification:

B23Q 3/18

US Classification:

269 63

Abstract:

A multi-axis chuck that rotates about at least two axes. Preferably, the axes are perpendicular. The multi-axis chuck includes a first portion, second portion, and third portion. Rear sides of the first portion and the second portion have a first mating portion that mates with a second mating portion provided on the second portion and the third portion, respectively. The mating portions enable the first portion and the second portion to be rotated about the axes. Preferably, the first portion rotates about a first axis independently of the second and third portions. Rotation of the second portion about a second axis preferably also rotates the first portion about the second axis. The multi-chuck is operatively connected to a motor, controller, and sensors. A user inputs a desired position into the controller that controls the motor. The motor rotates the multi-axis chuck to the desired position.

US Patent:

7433739, Oct 7, 2008

Filed:

Nov 30, 2004

Appl. No.:

11/001374

Inventors:

Scott Salys - Los Angeles CA, US
Chris Parrillo - Simi Valley CA, US
Matt Phillips - Sylmar CA, US
Luz Padilla - Pacoima CA, US
Jnyan Patel - Woodland Hills CA, US
Kevin L. Morgan - Simi Valley CA, US
Michael Yang - Thousand Oaks CA, US
Sheldon Williams - Green Valley CA, US
Andrew W. McGarvey - Minneapolis MN, US

Assignee:

Pacesetter, Inc. - Sylmar CA

International Classification:

A61N 1/05

US Classification:

607115, 607119

Abstract:

An implantable lead having an elongated lead body that includes an electrical conductor extending between a distal end of the lead body and a proximal end of the lead body is disclosed. The lead further includes an electrode formed at the distal end of the lead body, the electrode being coupled to the electrical conductor and one or more passive fixation mesh sections coupled to the distal end of the lead body that promotes tissue over growth.

US Patent:

7530557, May 12, 2009

Filed:

Jan 29, 2007

Appl. No.:

11/668427

Inventors:

Xuan S. Bui - Culver City CA, US
Michael Yang - Cerritos CA, US
Gilles Lefebvre - Torrance CA, US

Assignee:

Sakura Finetek U.S.A., Inc. - Torrance CA

International Classification:

B23Q 3/18

US Classification:

269 63, 269 60

Abstract:

A multi-axis chuck that rotates about at least two axes. Preferably, the axes are perpendicular. The multi-axis chuck includes a first portion, second portion, and third portion. Rear sides of the first portion and the second portion have a first mating portion that mates with a second mating portion provided on the second portion and the third portion, respectively. The mating portions enable the first portion and the second portion to be rotated about the axes. Preferably, the first portion rotates about a first axis independently of the second and third portions. Rotation of the second portion about a second axis preferably also rotates the first portion about the second axis. The multi-chuck is operatively connected to a motor, controller, and sensors. A user inputs a desired position into the controller that controls the motor. The motor rotates the multi-axis chuck to the desired position.

US Patent:

8447389, May 21, 2013

Filed:

Aug 23, 2010

Appl. No.:

12/861573

Inventors:

Steve Koh - South Pasadena CA, US
Michael Yang - Thousand Oaks CA, US
Ryan Rooke - Redondo Beach CA, US
Stuart Rosenberg - Castaic CA, US
Wenbo Hou - Lancaster CA, US

Assignee:

Pacesetter, Inc. - Sylmar CA

International Classification:

A61B 5/0452

US Classification:

600509

Abstract:

A system and method are provided for monitoring ischemic development. The system and method identify a non-physiologic event and obtain cardiac signals along multiple sensing vectors, wherein at least a portion of the sensing vectors extend to or from electrodes located proximate to the left ventricle. The system and method monitor a segment of interest in the cardiac signals obtained along the multiple sensing vectors to identify deviations in the segment of interest from a baseline. The system and method record at least one of timing or segment shift information associated with the deviations in the segments of interest; and identify at least one of size, direction of development or rate of progression of an ischemia region based on the at least one of timing or segment shift information.

US Patent:

8527049, Sep 3, 2013

Filed:

Nov 18, 2009

Appl. No.:

12/621373

Inventors:

Steve Koh - South Pasadena CA, US
Stuart Rosenberg - Castaic CA, US
Kyungmoo Ryu - Palmdale CA, US
Michael Yang - Thousand Oaks CA, US
Allen Keel - San Jose CA, US

Assignee:

Pacesetter, Inc. - Sylmar CA

International Classification:

A61N 1/365
A61B 5/05

US Classification:

607 17

Abstract:

An exemplary method includes selecting multiple electrodes located in a patient; acquiring position information during one or more cardiac cycles for the multiple electrodes where the acquiring includes using each of the electrodes for measuring one or more electrical potentials in an electrical localization field established in the patient; calculating one or more vector metrics based on the acquired position information for one or more vectors, each vector defined by two of the multiple electrodes; and analyzing the one or more vector metrics to assess cardiac performance during the one or more cardiac cycles. Various other methods, devices, systems, etc. , are also disclosed.

US Patent:

20100042174, Feb 18, 2010

Filed:

Aug 12, 2008

Appl. No.:

12/190545

Inventors:

Steve Koh - South Pasadena CA, US
Michael Yang - Thousand Oaks CA, US
Kyungmoo Ryu - Palmdale CA, US

Assignee:

PACESETTER, INC. - Sylmar CA

International Classification:

A61N 1/368

US Classification:

607 19

Abstract:

An exemplary method for multi-tier pacing includes delivering single site, left ventricular pacing, sensing patient activity; comparing the sensed patient activity to a patient activity threshold and, if the sensed patient activity exceeds the patient activity threshold, then delivering multi-site, left ventricular pacing for a predetermined period of time and, after the predetermined period of time, delivering single, site left ventricular pacing. In such a method, the period of time may be determined based on cardio-pulmonary demand. Other exemplary technologies are also disclosed.

US Patent:

20110144510, Jun 16, 2011

Filed:

Dec 16, 2009

Appl. No.:

12/639788

Inventors:

Kyungmoo Ryu - Palmdale CA, US
Euljoon Park - Valencia CA, US
Stuart Rosenberg - Castaic CA, US
Allen Keel - San Francisco CA, US
Wenbo Hou - Lancaster CA, US
Thao Thu Nguyen - Bloomington MN, US
Steve Koh - South Pasadena CA, US
Kjell Norén - Solna, SE
Michael Yang - Thousand Oaks CA, US

Assignee:

PACESETTER, INC. - Sylmar CA

International Classification:

A61B 5/0452

US Classification:

600509

Abstract:

An exemplary system includes one or more processors; memory; and control logic, of one or more modules operable in conjunction with the one or more processors and the memory, to acquire myocardial potential data associated with position information, acquire myocardial electrical activation data associated with position information, acquire myocardial position data with respect to time, generate isopotential contours based on the potential data, generate isochronal contours based on the electrical activation data, generate isomotion contours based on the position data with respect to time, and overlay the generated isopotential contours, isochronal contours and isomotion contours on a display to indicate a region of myocardial damage or myocardial scarring with respect to a map that comprises anatomical markers. Various other methods, devices, systems, etc., are also disclosed.

US Patent:

20120172867, Jul 5, 2012

Filed:

Dec 29, 2010

Appl. No.:

12/980586

Inventors:

Kyungmoo Ryu - Palmdale CA, US
Thao T. Ngo - Shakopee MN, US
Euljoon Park - Valencia CA, US
Stuart Rosenberg - Castaic CA, US
Allen Keel - San Francisco CA, US
Wenbo Hou - Lancaster CA, US
Steve Koh - South Pasadena CA, US
Kjell Noren - Solna, SE
Michael Yang - Thousand Oaks CA, US

International Classification:

A61B 18/14

US Classification:

606 41

Abstract:

A system and method for treating an arrhythmia in a heart are provided. The system includes an electronic control unit configured to monitor movement of one or more position sensor over a period of time. The position sensors may, for example, comprise electrodes or coils configured to generate induced voltages and currents in the presence of electromagnetic fields. The positions sensors are in contact with portions of heart tissue and changes in position are representative of motion of that tissue. The electronic control unit is further configured to generate an indicator, responsive to the movements of the sensors over the period of time, of a characteristic of the heart affected by delivery of ablation energy to heart tissue. In this manner, the effectiveness and safety of cardiac tissue ablation for treatment of the arrhythmia can be assessed and a post-ablation therapy regimen determined.