Roger B Stern

US Patent:

7104987, Sep 12, 2006

Filed:

Apr 14, 2003

Appl. No.:

10/414411

Inventors:

Michael Biggs - San Francisco CA, US
Roger A. Stern - Cupertino CA, US
Christopher James Danek - Santa Clara CA, US

Assignee:

Asthmatx, Inc. - Mountain View CA

International Classification:

A61B 18/18

US Classification:

606 34, 606 41

Abstract:

The present invention includes a system for delivering energy to an airway wall of a lung comprising an energy delivering apparatus and a PID controller having one or more variable gain factors which are rest after energy deliver has begun. The energy delivering apparatus may include a flexible elongated member and a distal expandable basket having at least one electrode for transferring energy to the airway wall and at least one temperature sensor for measuring temperature. The PID controller determines a new power set point base on an error between a preset temperature and the measured temperature. The algorithm can be P=P+G(αe+βe+γe) where α, β and γ are preset values and α is from 1 to 2; βis from −1 to −2; and γ is from −0. 5 to 0−5. In another variation, the controller is configured to shut down if various measured parameters are exceeded such as, for example, energy, impedance, temperature, temperature differences, activation time and combinations thereof.

US Patent:

7115123, Oct 3, 2006

Filed:

Mar 31, 2003

Appl. No.:

10/404883

Inventors:

Edward W. Knowlton - Danville CA, US
Roger A. Stern - Cupertino CA, US
Bryan Weber - Livermore CA, US
Mitchell Levinson - Pleasanton CA, US

Assignee:

Thermage, Inc. - Hayward CA

International Classification:

A61B 18/18

US Classification:

606 41, 606 34, 606 48, 607104

Abstract:

An apparatus for cooling a skin surface includes an RF device that has an RF electrode with dielectric and conductive portions. The RF device is configured to be coupled to an RF energy source. A cooling member is coupled to the RF device. A memory is coupled to the RF device. The memory is configured to store information to facilitate operation of at least one of the RF electrode, the cooling member, and the RF energy source.

US Patent:

20030212393, Nov 13, 2003

Filed:

Mar 31, 2003

Appl. No.:

10/404414

Inventors:

Edward Knowlton - Danville CA, US
Roger Stern - Cupertino CA, US
Bryan Weber - Livermore CA, US
Mitchell Levinson - Pleasanton CA, US

International Classification:

A61B018/14

US Classification:

606/032000, 606/041000, 607/099000

Abstract:

An RF device includes a support structure coupled to an RF electrode that has conductive and dielectric portions. A cooling member is coupled to the support structure and is configured to cool a back surface of the RF electrode. The cooling member is distanced from the back surface of the RF electrode. A memory is coupled to the RF electrode. The memory is configured to store information to facilitate operation of at least one of the RF electrode, the cooling member and an RF energy source.

US Patent:

20060206110, Sep 14, 2006

Filed:

May 18, 2006

Appl. No.:

11/436424

Inventors:

Edward Knowlton - Danville CA, US
Roger Stern - Cupertino CA, US
Bryan Weber - Livermore CA, US
Mitchell Levinson - Pleasanton CA, US

Assignee:

Thermage, Inc. - Hayward CA

International Classification:

A61B 18/18

US Classification:

606041000, 606034000, 606048000, 607104000

Abstract:

An apparatus for cooling a skin surface includes an RF device that has an RF electrode with dielectric and conductive portions. The RF device is configured to be coupled to an RF energy source. A cooling member is coupled to the RF device. A memory is coupled to the RF device. The memory is configured to store information to facilitate operation of at least one of the RF electrode, the cooling member, and the RF energy source.

US Patent:

20060259035, Nov 16, 2006

Filed:

May 10, 2006

Appl. No.:

11/382680

Inventors:

Camran Nezhat - Woodside CA, US
Roger Stern - Cupertino CA, US
Joseph Eder - Los Altos CA, US
Peter Edelstein - Menlo Park CA, US

International Classification:

A61B 18/14

US Classification:

606050000

Abstract:

One method for performing procedures, such as vaginal hysterectomies, comprises engaging first and second energy transmitting elements against a lateral side of a uterus. The first and second energy transmitting elements are positioned against opposed surfaces of a tissue mass extending from and including a fallopian tube or round ligament to a tip of a cervix. Third and fourth energy transmitting elements are positioned against another lateral side of the uterus and against opposed surfaces of another tissue mass extending from and including another fallopian tube or round ligament to the tip of the cervix. Radio frequency or other high energy power is applied through the energy transmitting elements to the tissue masses. The power is applied for a time and in an amount sufficient to coagulate and seal the tissue masses within the energy transmitting elements. The coagulated tissue masses are then resected and the entire uterus removed.

US Patent:

20110172655, Jul 14, 2011

Filed:

Nov 11, 2010

Appl. No.:

12/944238

Inventors:

Michael Biggs - San Francisco CA, US
Roger A. Stern - Cupertino CA, US
Christopher J. Danek - Santa Clara CA, US

Assignee:

Asthmatx, Inc. - Sunnyvale CA

International Classification:

A61B 18/18

US Classification:

606 34

Abstract:

The present invention includes a system for delivering energy to an airway wall of a lung comprising an energy delivering apparatus and a PID controller having one or more variable gain factors which are rest after energy deliver has begun. The energy delivering apparatus may include a flexible elongated member and a distal expandable basket having at least one electrode for transferring energy to the airway wall and at least one temperature sensor for measuring temperature. The PID controller determines a new power set point base on an error between a preset temperature and the measured temperature. The algorithm can be P=P+G(αe+βe+γe) where α, β and γ are preset values and α is from 1 to 2; β is from −1 to −2; and γ is from −0.5 to 0.5. In another variation, the controller is configured to shut down if various measured parameters are exceeded such as, for example, energy, impedance, temperature, temperature differences, activation time and combinations thereof. Methods for treating a target medium using a PID algorithm are also provided.

US Patent:

53986830, Mar 21, 1995

Filed:

Jul 16, 1993

Appl. No.:

8/092762

Inventors:

Stuart D. Edwards - San Ramon CA
Michael R. Franz - Washington DC
Russel B. Thompson - San Leandro CA
Roger A. Stern - Cupertino CA

Assignee:

EP Technologies, Inc. - Sunnyvale CA

International Classification:

A61B 504

US Classification:

128642

Abstract:

A combination catheter for both detecting monophasic action potentials and ablating surface tissue in an in vivo heart of a patient is provided. The apparatus includes a catheter probe having a terminal tip portion and an electrode carried on the tip such that a portion of the tip electrode is exposed to ambient. A reference electrode is spaced along the tip from the first electrode for supplying a reference potential signal. An ablating electrode is located adjacent to but electrically insulated from both the tip and reference electrodes for providing electromagnetic energy to the tip. The electrodes are electrically connected to the proximal end of the catheter through individual conductors or wires that run through an insulated cable. An electronic filter is provided to permit the recording of MAPs during ablation without radiofrequency interference. The catheter may also include standard mapping and/or pacing electrodes.

US Patent:

43735320, Feb 15, 1983

Filed:

Jul 7, 1980

Appl. No.:

6/166556

Inventors:

Bruce C. Hill - Palo Alto CA
Roger A. Stern - Palo Alto CA

Assignee:

Palo Alto Medical Research Foundation - Palo Alto CA

International Classification:

A61B 1000

US Classification:

128660

Abstract:

For non-invasive diagnosis of conditions subsequent to a medical operative procedure, at the time of operation a "target" is sutured to tissue. Later, by use of an ultrasonic imaging system or other diagnostic instrument, the location of the target can be accurately determined. Thereupon, non-invasive techniques may be used in the target area to determine changes in physiology subsequent to implanting the target. For example, a target consisting of a fused array of small stainless steel balls is sutured to a coronary artery bypass graft. Later, to determine if the bypass graft is patent, by ultrasonic methods the location of the target and hence the bypass graft is determined. Then, using a Doppler-effect flowmeter, flow through the bypass graft may be measured and compared with prior measurements. The marking technique is also believed to be useful in postoperative determination of tumor growth at the locus of said marker.