Peter B Simpson

US Patent:

8255032, Aug 28, 2012

Filed:

Jan 15, 2010

Appl. No.:

12/688763

Inventors:

James R. Petisce - San Clemente CA, US
Mark A. Tapsak - Orangeville PA, US
Peter C. Simpson - Encinitas CA, US
Victoria E. Carr-Brendel - San Diego CA, US
James H. Brauker - Addison MI, US

Assignee:

DexCom, Inc. - San Diego CA

International Classification:

A61B 5/05
A61B 5/00

US Classification:

600345, 600347, 600365

Abstract:

The present invention relates generally to systems and methods for increasing oxygen availability to implantable devices. The preferred embodiments provide a membrane system configured to provide protection of the device from the biological environment and/or a catalyst for enabling an enzymatic reaction, wherein the membrane system includes a polymer formed from a high oxygen soluble material. The high oxygen soluble polymer material is disposed adjacent to an oxygen-utilizing source on the implantable device so as to dynamically retain high oxygen availability to the oxygen-utilizing source during oxygen deficits. Membrane systems of the preferred embodiments are useful for implantable devices with oxygen-utilizing sources and/or that function in low oxygen environments, such as enzyme-based electrochemical sensors and cell transplantation devices.

US Patent:

8478377, Jul 2, 2013

Filed:

Nov 7, 2008

Appl. No.:

12/267544

Inventors:

Mohammad Ali Shariati - Irvine CA, US
Ying Li - San Diego CA, US
Apurv Ullas Kamath - San Diego CA, US
Peter C. Simpson - Encinitas CA, US
Richard C. Yang - Carlsbad CA, US
Mark Brister - Encinitas CA, US

Assignee:

Dexcom, Inc. - San Diego CA

International Classification:

A61B 5/05

US Classification:

600347, 600345, 600365

Abstract:

Systems and methods of use for continuous analyte measurement of a host's vascular system are provided. In some embodiments, a continuous glucose measurement system includes a vascular access device, a sensor and sensor electronics, the system being configured for insertion into communication with a host's circulatory system.

US Patent:

20110275919, Nov 10, 2011

Filed:

Jul 20, 2011

Appl. No.:

13/187277

Inventors:

James Petisce - San Clemente CA, US
Mark A. Tapsak - Orangeville PA, US
Peter C. Simpson - Encinitas CA, US
Victoria Carr-Brendel - San Diego CA, US

Assignee:

DexCom, Inc. - San Diego CA

International Classification:

A61B 5/1468

US Classification:

600347, 600345

Abstract:

The present invention relates generally to systems and methods for increasing oxygen availability to implantable devices. The preferred embodiments provide a membrane system configured to provide protection of the device from the biological environment and/or a catalyst for enabling an enzymatic reaction, wherein the membrane system includes a polymer formed from a high oxygen soluble material. The high oxygen soluble polymer material is disposed adjacent to an oxygen-utilizing source on the implantable device so as to dynamically retain high oxygen availability to the oxygen-utilizing source during oxygen deficits. Membrane systems of the preferred embodiments are useful for implantable devices with oxygen-utilizing sources and/or that function in low oxygen environments, such as enzyme-based electrochemical sensors and cell transplantation devices.

US Patent:

20130255570, Oct 3, 2013

Filed:

May 13, 2013

Appl. No.:

13/893237

Inventors:

James R. Petisce - San Clemente CA, US
Sean Saint - San Diego CA, US
Kum Ming Woo - San Diego CA, US
Victor Ha - Saint Louis MO, US
John Nolting - Poway CA, US
Peter C. Simpson - Encinitas CA, US
James Brauker - Addison MI, US

Assignee:

DexCom, Inc. - San Diego CA

International Classification:

A61B 5/05

US Classification:

118 35, 118500

Abstract:

The present invention relates generally to systems and methods for measuring an analyte in a host. More particularly, the present invention relates to systems and methods for transcutaneous measurement of glucose in a host.