Timothy A Fayram

6552511, Apr 22, 2003

Apr 7, 2000

09/545044

Timothy A. Fayram - Gilroy CA

Pacesetter, Inc. - Sunnyvale CA

H02J 700

320103

An implantable cardiac stimulation device with a hybrid battery network having first and second batteries with different battery chemistries connected in parallel with each other. The first dense cell battery has a higher resistance and greater energy density than the second fast cell battery, and the fast cell battery has greater current carrying capability than the dense cell battery. The dense cell battery has a higher voltage than the fast cell battery. In one embodiment the dense cell is a Lithium Carbon Monofluoride cell and the fast cell is a Lithium Silver Vanadium Oxide cell. During high current demand of high voltage capacitor charging, the fast cell provides the vast majority of the current due to its lower resistance. Following capacitor charging, the fast cell is recharged from the dense cell at a rate limited by the voltage difference between the cells.

6658296, Dec 2, 2003

Jun 19, 2001

09/886321

Kenneth Wong - Saratoga CA
Timothy A. Fayram - Gilroy CA

Pacesetter, Inc. - Sunnyvale CA

A61N 136

607 37, 607 9

An implantable cardiac rhythm management device has a flexible circuit sheet with a number of connected sheet portions and a number of conductive traces extending between different sheet portions. A plurality of device components are attached to the sheet, on different sheet portions. The sheet is articulated at fold lines between the sheet portions; and folded so that at least some of the sheet portions occupy different planes.

6826427, Nov 30, 2004

Jan 18, 2002

10/054468

Timothy A. Fayram - Gilroy CA
Mark W. Kroll - Simi Valley CA

Pacesetter, Inc. - Sunnyvale CA

A61N 139

607 29, 607 5

A battery of a cardiac stimulation device may experience voltage delay problems caused by a passivation layer that forms on the anode of the battery. To inhibit voltage delay, the battery is periodically used to charge the capacitor to a partial charge. Both the charge time and the interval between charges can be adjusted to reduce the power consumption required to inhibit battery voltage delay.

6931278, Aug 16, 2005

Dec 6, 2002

10/313223

Mark W. Kroll - Simi Valley CA, US
Gabriel A. Mouchawar - Valencia CA, US
Timothy A. Fayram - Gilroy CA, US

Pacesetter, Inc. - Sylmar CA

A61N001/39

607 5

An implantable cardiac rhythm management device has a housing containing rhythm management circuitry. The circuitry includes a battery, a transformer, and a capacitor connected via charging circuitry that operates to transmit current from the battery to charge the capacitor. A number of leads connected to the circuitry operate to transmit a shock from the capacitor to cardiac tissue outside of the housing. The capacitor has a smaller volume than the combined volume of the battery and transformer, such that it reaches a selected charge voltage within a limited time interval. The device may operate to limit capacitor charging to less than a selected energy storage capability at a given voltage, and components may be selected to limit charging time to less than 2 seconds. The component selection and charge duration may be based on a time-based function of defibrillation threshold (DFT).

7031139, Apr 18, 2006

Dec 5, 2002

10/313510

Timothy A. Fayram - Gilroy CA, US

Pacesetter, Inc. - Sunnyvale CA

H01G 9/04
H01G 2/10

361508, 361517, 361528

An implantable cardioverter-defibrillator has a housing containing cardioverter-defibrillator circuitry and a capacitor assembly. The capacitor assembly includes at least two flat capacitors each having opposed major surfaces. Each capacitor has an anode contact at one major surface, and a cathode contact at the opposite major surface. The anode contact of one of the capacitors contacts the cathode contact of the other. Each capacitor contact may be a thin metal plate covering the entire surface of the capacitor, with each plate connected to corresponding interleaved cathode or anode flat sheets between the plates. A non-conductive perimeter may enclose the sheets and connect the plates to each other.

7130183, Oct 31, 2006

Feb 3, 2006

11/346664

Timothy A. Fayram - Gilroy CA, US

PaceSetter, Inc. - Sunnyvale CA

H01G 2/10
A61N 1/18

361517, 607 5

An implantable cardioverter-defibrillator has a housing containing cardioverter-defibrillator circuitry and a capacitor assembly. The capacitor assembly includes at least two flat capacitors each having opposed major surfaces. Each capacitor has an anode contact at one major surface, and a cathode contact at the opposite major surface. The anode contact of one of the capacitors contacts the cathode contact of the other. Each capacitor contact may be a thin metal plate covering the entire surface of the capacitor, with each plate connected to corresponding interleaved cathode or anode flat sheets between the plates. A non-conductive perimeter may enclose the sheets and connect the plates to each other.

7155281, Dec 26, 2006

Dec 3, 2004

11/003203

Timothy A. Fayram - Gilroy CA, US

Pacesetter, Inc. - Sunnyvale CA

A61N 1/00
A61B 5/04
A61B 5/02
A61B 5/05
A61B 5/103
A61B 5/00

607 19, 607 6, 607 16, 607 17, 607 18, 607 62, 600513, 600595, 600506, 600547, 600587, 600301, 600323, 600483

Energy efficient methods and systems for using multi-dimensional activity sensors with implantable cardiac devices are provided. In certain embodiments the output of a passive activity sensor (used for rate responsive pacing) is used to trigger temporary use of a relatively high power multi-dimensional activity sensor. In other embodiments, the output of a relatively low power oxygen saturation sensor is used to trigger temporary use of a relatively high power multi-dimensional activity sensor. This description is not intended to be a complete description of, or limit the scope of, the invention.

7181276, Feb 20, 2007

Jul 27, 2004

10/901403

Rose Province - San Jose CA, US
Timothy A. Fayram - Gilroy CA, US

Pacesetter, Inc. - Sylmar CA

A61N 1/38

607 7, 607 4, 607 5

An exemplary method includes detecting ventricular fibrillation, delivering a low voltage cardiac stimulus, determining whether the low voltage cardiac stimulus terminated the ventricular fibrillation, and delivering a higher voltage cardiac stimulus if the low voltage cardiac stimulus did not terminate the ventricular fibrillation. In one example, the delivering the low voltage cardiac stimulus occurs within approximately 10 event intervals from the detected onset of ventricular fibrillation; otherwise, delivery of an appropriate higher voltage cardiac stimulus occurs. Other exemplary methods, devices, systems, etc. , are also disclosed.