Jonathan R Kuhn

US Patent:

8275432, Sep 25, 2012

Filed:

Dec 12, 2007

Appl. No.:

11/955056

Inventors:

Jonathan L. Kuhn - Ham Lake MN, US
Timothy J. Davis - Coon Rapids MN, US
Can Cinbis - Shoreview MN, US
Robert M. Ecker - Lino Lakes MN, US
Shawn D. Knowles - Princeton NJ, US
Thomas A. Anderson - New Hope MN, US
Jeffrey M. Jelen - New Hope MN, US

Assignee:

Medtronic, Inc. - Minneapolis MN

International Classification:

A61B 5/1455

US Classification:

600310, 600316, 600322, 600323

Abstract:

An implantable optical sensor and associated manufacturing method include a sensor housing having an inner surface and an outer surface and a window formed in the housing extending between the housing inner surface and the housing outer surface. An opto-electronic device enclosed within the housing and having a photonic surface is operatively positioned proximate the window for emitting light through the window or detecting light through the window. An optical coupling member is positioned between the opto-electronic device and the window for reducing light reflection at a surface within the implantable optical sensor.

US Patent:

8275435, Sep 25, 2012

Filed:

Jan 21, 2010

Appl. No.:

12/690957

Inventors:

Jonathan L. Kuhn - Ham Lake MN, US
Jonathan P. Roberts - Coon Rapids MN, US
Andrew J. Ries - Lino Lakes MN, US
James D. Reinke - Maple Grove MN, US
Jeffrey M. Jelen - New Hope MN, US
Robert M. Ecker - Lino Lakes MN, US
Timothy J. Davis - Coon Rapids MN, US
Can Cinbis - Shoreview MN, US
Thomas A. Anderson - New Hope MN, US

Assignee:

Medtronic, Inc. - Minneapolis MN

International Classification:

A61B 5/00

US Classification:

600323, 600325

Abstract:

An implantable medical device having an optical sensor selects the function of modular opto-electronic assemblies included in the optical sensor. Each assembly is provided with at least one light emitting device and at least one light detecting device. A device controller coupled to the optical sensor controls the function of each the assemblies. The controller executes a sensor performance test and selects at least one of the plurality of assemblies to operate as a light emitting assembly in response to a result of the performance test. The controller selects at least one other of the plurality of optical sensor assemblies to operate as a light detecting assembly in response to a result of the performance test.

US Patent:

8290557, Oct 16, 2012

Filed:

Dec 12, 2007

Appl. No.:

11/955025

Inventors:

Timothy J. Davis - Coon Rapids MN, US
Jonathan P. Roberts - Coon Rapids MN, US
James D. Reinke - Maple Grove MN, US
Jonathan L. Kuhn - Ham Lake MN, US
Shawn D. Knowles - St. Francis MN, US

Assignee:

Medtronic, Inc. - Minneapolis MN

International Classification:

A61B 5/1455
A61B 5/02

US Classification:

600310, 600322, 600323, 600324, 600500, 600502

Abstract:

An implantable medical device includes a hermetically sealed housing and a first light emitting diode (LED) enclosed within the housing configured to detect light corresponding to a selected light wavelength. A conductive element extends from the LED for carrying a current signal corresponding to the light detected by the LED, the intensity of the detected light being correlated to a change in a physiological condition in a body fluid volume or a tissue volume proximate the LED.

US Patent:

8320984, Nov 27, 2012

Filed:

Apr 22, 2010

Appl. No.:

12/765345

Inventors:

Jonathan L. Kuhn - Ham Lake MN, US
Thomas A. Anderson - New Hope MN, US
Can Cinbis - Shoreview MN, US
Jeffrey M. Jelen - New Hope MN, US
Timothy Davis - Coon Rapids MN, US
James K. Carney - Brooklyn Park MN, US

Assignee:

Medtronic, Inc. - Minneapolis MN

International Classification:

A61B 5/00

US Classification:

600316

Abstract:

An optical sensor for a medical device includes a fixed lens spacing between emit and receive modules to achieve target sensor sensitivity, while varying other sensor parameters in order to increase signal amplitude without increasing power demand. The size of at least one of emit and receive module lenses of an optical sensor, and the offset between the opto-electronic component and the respective lens of at least one of emit and receive modules is decreased to increase amplitude of the signal received by the receive module from the emit module.

US Patent:

8346332, Jan 1, 2013

Filed:

Jun 10, 2010

Appl. No.:

12/797811

Inventors:

Jonathan L. Kuhn - Ham Lake MN, US
David A. Anderson - Stanchfield MN, US
Can Cinbis - Shoreview MN, US
Richard J. O'Brien - Hugo MN, US
Yong K. Cho - Maple Grove MN, US
Thomas J. Mullen - Andover MN, US
Avram Scheiner - Vadnais Heights MN, US
Rodolphe P. Katra - Blaine MN, US

Assignee:

Medtronic, Inc. - Minneapolis MN

International Classification:

A61B 5/00

US Classification:

600323, 600328, 600334

Abstract:

A medical device for monitoring a patient condition includes a first combination of a light source and a light detector to emit light into a volume of tissue, detect light scattered by the volume of tissue, and provide a first output signal corresponding to an intensity of the detected light. A control module is coupled to the light source to control the light source to emit light at least four spaced-apart light wavelengths, and a monitoring module is coupled to the light detector to receive the output signal, compute a measure of tissue oxygenation in response to the light detector output signal, and detect tissue hypoxia using the measure of tissue oxygenation.

US Patent:

8352008, Jan 8, 2013

Filed:

Jun 10, 2010

Appl. No.:

12/797831

Inventors:

Jonathan L. Kuhn - Ham Lake MN, US
David A. Anderson - Stanchfield MN, US
Can Cinbis - Shoreview MN, US

Assignee:

Medtronic, Inc. - Minneapolis MN

International Classification:

A61B 5/00

US Classification:

600336

Abstract:

A medical device system and associated method are used for monitoring tissue oxygenation. An optical sensor produces a signal corresponding to tissue light attenuation. A processor receives the optical sensor signal and computes a first measure of light attenuation at a first light wavelength and a second measure of light attenuation at a second light wavelength. In one embodiment, noise cancellation circuitry receives the first measure and the second measure and generates a guessed ratio of the first and second measures. Using the first measure, the second measure and the guessed ratio, the noise cancellation circuitry provides a peak output power when the guessed ratio corresponds to an actual ratio of the first and second measures.

US Patent:

8369932, Feb 5, 2013

Filed:

Jan 29, 2010

Appl. No.:

12/696488

Inventors:

Can Cinbis - Shoreview MN, US
Xiaonan Shen - Shoreview MN, US
Jonathan Kuhn - Ham Lake MN, US

Assignee:

Medtronic Ablation Frontiers LLC - NE Minneapolis MN

International Classification:

A61B 5/00

US Classification:

600424, 600475, 600477, 600479

Abstract:

A system and method for identifying the location of a medical device within a patient's body may be used to locate or identify the fossa ovalis for trans-septal procedures. The systems and methods measure light reflected by tissues encountered by an optical array. An optical array detects characteristic wavelengths of tissues that are different distances from the optical array. The reflectance of different wavelengths of light at different distances from an optical array may be used to identify the types of tissue encountered, including oxygenated blood in the left atrium as detected from the right atrium through the fossa ovalis.

US Patent:

8391979, Mar 5, 2013

Filed:

Jun 10, 2010

Appl. No.:

12/797793

Inventors:

Jonathan L. Kuhn - Ham Lake MN, US
Can Cinbis - Shoreview MN, US
David A. Anderson - Stanchfield MN, US
James K. Carney - Brooklyn Park MN, US

Assignee:

Medtronic, Inc. - Minneapolis MN

International Classification:

A61N 1/00

US Classification:

607 22

Abstract:

An implantable medical device that includes an optical sensor for providing a signal corresponding to light attenuation by a volume of blood perfused tissue, a control module coupled to the optical sensor controlling the light emitted by the optical sensor, a monitoring module receiving an optical sensor output signal and measuring light attenuation, a tissue electrode for stimulating the volume of blood perfused tissue, a pulse generator coupled to the tissue electrode for delivering electrical stimulation to the volume of blood-perfused tissue, and a processor coupled to the cardiac electrode and the monitoring module and configured to detect an arrhythmia in response to the depolarization signals, compute a tissue oxygenation measurement and control the pulse generator to deliver electrical stimulation to the volume of blood-perfused tissue in response to detecting the arrhythmia, and detect a hemodynamic status of the arrhythmia in response to at least one of a detected rate of tissue oxygenation decline and a detected rate of tissue oxygenation recovery.