Alex Soriano

US Patent:

8135468, Mar 13, 2012

Filed:

Aug 9, 2010

Appl. No.:

12/853157

Inventors:

Dan E. Gutfinger - Agoura Hills CA, US
Fujian Qu - Sunnyvale CA, US
Alex Soriano - Ventura CA, US
Ryan Rooke - Redondo Beach CA, US
Yelena Nabutovsky - Sunnyvale CA, US
Riddhi Shah - Mountain View CA, US

Assignee:

Pacesetter, Inc. - Sylmar CA

International Classification:

A61N 1/00

US Classification:

607 28

Abstract:

Various techniques are provided for use with an implantable medical device for estimating cardiac pressure within a patient based on admittance (or related electrical values such as impedance or conductance) that takes into account the presence of acute MR within the patient. Briefly, the device detects an indication of acute MR, if occurring within the patient. The device also applies electrical fields to tissues of the patient and measures electrical parameters influenced by the electrical field, such as admittance, impedance or conductance. The device then estimates cardiac pressure within the patient based on the measured electrical parameter and the indication of acute MR. In one example, different linear correlation functions are used to convert admittance values to left atrial pressure (LAP) values depending upon the presence or absence of acute MR within the patient.

US Patent:

20120035493, Feb 9, 2012

Filed:

Aug 9, 2010

Appl. No.:

12/853130

Inventors:

Dan E. Gutfinger - Agoura Hills CA, US
Fujian Qu - Sunnyvale CA, US
Alex Soriano - Ventura CA, US
Ryan Rooke - Redondo Beach CA, US
Yelena Nabutovsky - Sunnyvale CA, US
Riddhi Shah - Mountain View CA, US
Andreas Blomqvist - Taby, SE

Assignee:

PACESETTER, INC. - Sylmar CA

International Classification:

A61B 5/053

US Classification:

600547

Abstract:

A new model is provided for understanding and exploiting impedance or admittance values measured by implantable medical devices, such as pacemakers or cardiac resynchronization devices (CRTs.) The device measures impedance along vectors extending through tissues of the patient between various pairs of electrodes. The device then converts the vector-based impedance measurements into near-field individual electrode-based impedance values. This is accomplished, in at least some examples, by converting the vector-based impedance measurements into a set of linear equations to be solved while ignoring far-field contributions to the impedance measurements. The device solves the linear equations to determine the near-field impedance values for the individual electrodes, which are representative of the impedance of tissues in the vicinity of the electrodes. The device then performs or controls various device functions based on the near-field values, such as analyzing selected near-field values to detect heart failure or pulmonary edema.

US Patent:

20120035495, Feb 9, 2012

Filed:

Jan 14, 2011

Appl. No.:

13/007424

Inventors:

Dan E. Gutfinger - Agoura Hills CA, US
Fujian Qu - Sunnyvale CA, US
Alex Soriano - Ventura CA, US
Ryan Rooke - Redondo Beach CA, US
Yelena Nabutovsky - Sunnyvale CA, US
Riddhi Shah - Mountain View CA, US

Assignee:

PACESETTER, INC. - Sylmar CA

International Classification:

A61B 5/053

US Classification:

600547

Abstract:

Various techniques are provided for use with an implantable medical device for exploiting near-field impedance/admittance. Examples include techniques for assessing heart chamber disequilibrium, detecting chamber volumes and pressures, calibrating near-field-based left atrial pressure (LAP) estimation procedures and for assessing the recovery from injury at the electrode-tissue interface. In one particular example, the implantable device assesses the degree of concordance between the left ventricle (LV) and the right ventricle (RV) by quantifying a degree of scatter between LV and RV near-field admittance values. An increase in RV admittance is indicative of RV failure, an increase in LV admittance is indicative of LV failure, and an increase in both LV and RV admittance is indicative of biventricular failure.

US Patent:

20230028735, Jan 26, 2023

Filed:

May 19, 2022

Appl. No.:

17/664180

Inventors:

- Sylmar CA, US
Bei Ning Zhang - Pasadena CA, US
Arees Garabed - North Hills CA, US
Rodney Hawkins - Santa Clarita CA, US
Xiangqun Chen - Santa Clarita CA, US
Alexander Davis Robertson - Los Angeles CA, US
Alex Soriano - Ventura CA, US
Kyungmoo Ryu - Palmdale CA, US

International Classification:

A61B 17/34
A61M 37/00

Abstract:

An implant delivery instrument includes a housing with a main body section that defines a passage therethrough from a front end of the main body section to a back end of the main body section. The passage receives an obturator through an opening at the back end, and also receives an implant device. Movement of the obturator through the passage pushes the implant device through a discharge opening at the front end and through an incision into a subdermal pocket of a patient. The housing includes a tab connected to and projecting from the front end of the main body section. The tab has a blunt dissection tip for maintaining the incision in an open state without creating or enlarging the incision, and the tab is configured to surround the implant device moving through the discharge opening along only one side of the implant device.