Gwo Jenn Shen

8308722, Nov 13, 2012

Jul 23, 2007

11/781467

Theodore C. Ormsby - Escondido CA, US
George L. Leung - San Diego CA, US
Gwo Jenn Shen - Carlsbad CA, US
Peter Chu - Poway CA, US
Ming Fan Law - San Diego CA, US

MedWaves, Inc. - San Diego CA

A61B 18/18

606 41, 606 33, 607101, 607156

A hollow coaxial cable adapted for conduction of radio frequency (RF) energy, particularly microwave energy, has a proximal end and a distal end and comprises coaxial inner and outer conductors extending substantially the entire length of the cable from the proximal end to a distal end portion of the cable with a dielectric medium disposed between the inner and outer conductors. The inner conductor comprises an elongated electrically conductive tubular member having a hollow, axially extending lumen, and the outer conductor comprises an elongated electrically conductive tubular member disposed in a substantially coaxial relationship over at least a portion of the inner conductor. An ablating member which delivers radio frequency energy, particularly microwave energy, to body tissue is disposed at a distal end portion of the cable.

20060287649, Dec 21, 2006

Jun 30, 2006

11/479259

Theodore Ormsby - Escondido CA, US
George Leung - San Diego CA, US
Gwo Shen - Carlsbad CA, US
Peter Chu - Poway CA, US
Ming Fan Law - San Diego CA, US

A61B 18/04

606033000, 607101000, 607152000, 607154000

A radio-frequency based catheter system and method for ablating biological tissues within the body vessel of a patient comprises a radio-frequency (“RF”) generator for selectively generating a high frequency RF energy signal in a deployable catheter having an RF transmission line, an RF antenna mounted on the distal portion of the catheter, and a temperature sensor also mounted on a distal portion of the catheter for detecting temperature adjacent an ablation site. A control system adjusts the RF energy signal so that the detected temperature is at or close to a selected temperature setting or within a selected temperature range.

20070066972, Mar 22, 2007

Oct 19, 2006

11/551162

Theodore Ormsby - Escondido CA, US
George Leung - San Diego CA, US
Gwo Shen - Carlsbad CA, US
Peter Chu - Poway CA, US

A61B 18/18

606041000

A radio frequency (RF) ablation catheter has a flexible distal end portion so that it can be deflected to position an antenna disposed in the distal end portion adjacent a tissue site to be treated. At least one electrical conductor is coupled to the antenna and extends through the catheter to the proximal end of the catheter to a connector at the proximal end of the catheter for connection to a power supply for the RF antenna. At least one electrode is disposed at the distal end portion of the catheter and electrically coupled to the proximal end connector for connection to a monitor. The electrode is of a flexible, electrically conductive material such as conductive polymer material. The electrode may be an electrocardiogram (ECG) electrode.

20100004650, Jan 7, 2010

Jul 1, 2008

12/166159

Theodore C. Ormsby - Escondido CA, US
George Leung - San Diego CA, US
Gwo Jenn Shen - Carlsbad CA, US

MEDWAVES, INC. - San Diego CA

A61B 18/18
A61F 2/84

606 41, 623 111

A coaxial cable apparatus which transmits radio frequency (RF) energy for the ablation of biological tissues has inner and outer coaxial conductors extending substantially the entire length of the cable from a proximal end portion to a distal end portion. An RF antenna is disposed at the distal end portion of the cable and transmits RF energy for ablation of a tissue region to be treated. An angioplasty balloon is disposed over the RF antenna and communicates with a fluid supply and extraction passageway extending through the cable to allow the balloon to be inflated for an angioplasty procedure including tissue ablation, and to be deflated after the procedure is complete.

20100268218, Oct 21, 2010

Apr 15, 2009

12/424274

Theodore C. Ormsby - Escondido CA, US
Russell Chung - San Diego CA, US
George Leung - San Diego CA, US
Gwo Jenn Shen - Carlsbad CA, US

MedWaves, Inc. - San Diego CA

A61B 18/18

606 33

An ablation system which transmits radio frequency (RF) energy for the ablation of biological tissues has a transmission line and an RF antenna disposed at the distal portion of the transmission line. An RF signal generator supplies RF energy to the proximal end of the cable for transmission to the antenna, and an electrically tunable transformer is connected between the signal generator and the antenna. The transformer is tuned based on detection of the reflected power level from the antenna so as to reduce or minimize reflected power, thereby increasing RF energy coupling between the antenna and tissue.

20100268219, Oct 21, 2010

Apr 15, 2009

12/424287

Theodore C. Ormsby - Escondido CA, US
Russell Chung - San Diego CA, US
George Leung - San Diego CA, US
Gwo Jenn Shen - Carlsbad CA, US

MEDWAVES, INC. - San Diego CA

A61B 18/18

606 33

An ablation device which transmits radio frequency (RF) energy for the ablation of biological tissues has elongate inner and outer coaxial conductors extending from a proximal portion to a distal portion. An RF antenna is disposed at the distal portion of the device and transmits RF energy for ablation of a tissue region to be treated. Reflection of energy from the tissue or the ablation point is reduced by providing multiple layers of dielectric media about the antenna, or by providing a gradual transition point from the conductors to the antenna tip, by means of a longitudinally stepped dielectric layer transformer.

20210128231, May 6, 2021

Oct 29, 2020

17/083751

- San Diego CA, US
George Leung - San Diego CA, US
Gwo Jenn Shen - San Diego CA, US

A61B 18/14

An energy-transmitting therapeutic device having a hollow elongated assembly with a flexible tip at its distal end in which the hollow elongated assembly includes energy-transmitting elements and directional control elements. The directional control elements control the flexible tip such that it can pass through a lumen having a curve with a minimum radius of 1 cm and the energy-transmitting elements can deliver energy at an electromagnetic frequency of 300 KHz to 300 GHz.