Hyun J Yoon

US Patent:

8165691, Apr 24, 2012

Filed:

Oct 19, 2009

Appl. No.:

12/581475

Inventors:

Michael L. Ellingson - St. Louis Park MN, US
Hyun J. Yoon - Vadnais Heights MN, US

Assignee:

Medtronic, Inc. - Minneapolis MN

International Classification:

A61N 1/00

US Classification:

607 59

Abstract:

An IMD is selectively configurable to support a plurality of programming options for enabling and disabling an exposure operating mode of the device. In one example, the IMD may support at least two of a manual exposure mode programming option in which the exposure operating mode is manually enabled and manually disabled, an automatic exposure mode programming option in which the exposure operating mode is automatically enabled and automatically disabled, or a semi-automatic exposure mode programming option in which the exposure operating mode is either automatically enabled and manually disabled or manually enabled and automatically disabled. In this manner, the IMD may support more than one way for enabling and disabling the exposure operating mode to provide flexibility in the clinical workflows associated with programming the IMD into an exposure operating mode for a medical procedure, such as an MRI scan.

US Patent:

8260422, Sep 4, 2012

Filed:

Oct 19, 2009

Appl. No.:

12/581433

Inventors:

Michael L. Ellingson - St. Louis Park MN, US
Hyun J. Yoon - Vadnais Heights MN, US

Assignee:

Medtronic, Inc. - Minneapolis MN

International Classification:

A61N 1/362

US Classification:

607 30

Abstract:

An IMD is selectively configurable to support a plurality of programming options for enabling and disabling an exposure operating mode of the device. In one example, the IMD may support at least two of a manual exposure mode programming option in which the exposure operating mode is manually enabled and manually disabled, an automatic exposure mode programming option in which the exposure operating mode is automatically enabled and automatically disabled, or a semi-automatic exposure mode programming option in which the exposure operating mode is either automatically enabled and manually disabled or manually enabled and automatically disabled. In this manner, the IMD may support more than one way for enabling and disabling the exposure operating mode to provide flexibility in the clinical workflows associated with programming the IMD into an exposure operating mode for a medical procedure, such as an MRI scan.

US Patent:

8433408, Apr 30, 2013

Filed:

Apr 27, 2011

Appl. No.:

13/095076

Inventors:

Michael L. Ellingson - St. Louis Park MN, US
Hyun J. Yoon - Vadnais Heights MN, US
Patrick L. Parish - Circle Pines MN, US

Assignee:

Medtronic, Inc. - Minneapolis MN

International Classification:

A61N 1/00

US Classification:

607 27

Abstract:

This disclosure provides a pacing technique that reduces the effect of oversensing caused by noise on pacing therapy. The IMD delivers a pacing pulse subsequent to sensing an electrical signal on the lead when the sensed electrical signal coincides with an independently detected noise signal and the sensed electrical signal occurs during a period of time of an expected intrinsic cardiac signal. The IMD may, in some instances, trigger delivery of the pacing pulse during the escape interval instead of waiting for the escape interval to expire. Pacing in accordance with the techniques of this disclosure may allow for improved therapy during an MRI procedure by decreasing the risk associated with inappropriate pacing inhibition as well as decreasing the risk associated with pacing during the vulnerable period of the cardiac cycle.

US Patent:

8437862, May 7, 2013

Filed:

Mar 29, 2011

Appl. No.:

13/074143

Inventors:

Hyun J. Yoon - Vadnais Heights MN, US
Ben W. Herberg - Andover MN, US
Michael L. Ellingson - St. Louis Park MN, US

Assignee:

Medtronic, Inc. - Minneapolis MN

International Classification:

A61N 1/00

US Classification:

607 63, 607 27

Abstract:

An IMD may transition to an MRI mode automatically in response to detecting one or more conditions indicative of the presence of a strong magnetic field. Large static magnetic fields, such as those produced by an MRI device, may interact with the blood of a patient as it flows through the magnetic field to produce a voltage, a phenomenon referred to as the magnetohydrodynamic (MHD) effect. The voltage produced by the MHD effect is proportional to the strength of the magnetic field. As such, the voltage produced by blood flow in the strong magnetic field of an MRI device may result in a change in a characteristic of an electrogram (EGM). The IMD may detect the change in the characteristic of the EGM caused by the MHD effect and transition to operation in the MRI mode in response to at least the change in the EGM.

US Patent:

8467882, Jun 18, 2013

Filed:

Mar 29, 2011

Appl. No.:

13/074162

Inventors:

Michael L. Ellingson - St. Louis Park MN, US
Hyun J. Yoon - Vadnais Heights MN, US
Ben W. Herberg - Andover MN, US

Assignee:

Medtronic, Inc. - Minneapolis MN

International Classification:

A61N 1/00

US Classification:

607 63

Abstract:

An IMD may transition to an MRI mode automatically in response to detecting one or more conditions indicative of the presence of a strong magnetic field. Large static magnetic fields, such as those produced by an MRI device, may interact with the blood of a patient as it flows through the magnetic field to produce a voltage, a phenomenon referred to as the magnetohydrodynamic (MHD) effect. The voltage produced by the MHD effect is proportional to the strength of the magnetic field. As such, the voltage produced by blood flow in the strong magnetic field of an MRI device may result in a change in a characteristic of an electrogram (EGM). The IMD may detect the change in the characteristic of the EGM caused by the MHD effect and transition to operation in the MRI mode in response to at least the change in the EGM.

US Patent:

20110077706, Mar 31, 2011

Filed:

Sep 29, 2009

Appl. No.:

12/569101

Inventors:

Michael L. Ellingson - St. Louis Park MN, US
Hyun J. Yoon - Vadnais Heights MN, US

International Classification:

A61N 1/365
A61N 1/362
A61N 1/08

US Classification:

607 17, 607 59, 607 27, 607 28

Abstract:

An implantable medical device (IMD) automatically determines at least a portion of the parameters and, in some instances all of the parameters, of an exposure operating mode based on stored information regarding sensed physiological events or therapy provided over a predetermined period of time. The IMD may configure itself to operate in accordance with the automatically determined parameters of the exposure operating mode in response to detecting a disruptive energy field. Alternatively, the IMD may provide the automatically determined parameters of the exposure operating mode to a physician as suggested or recommended parameters for the exposure operating mode. In other instances, the automatically determined parameters may be compared to parameters received manually via telemetry and, if differences exist or occur, a physician or patient may be notified and/or the manual parameters may be overridden by the automatically determined parameters.

US Patent:

20110106204, May 5, 2011

Filed:

Dec 29, 2009

Appl. No.:

12/648573

Inventors:

Hyun J. Yoon - Vadnais Heights MN, US
Michael L. Ellingson - St. Louis Park MN, US
Piotr J. Przybyszewski - Coon Rapids MN, US
Patrick L. Parish - Circle Pines MN, US

International Classification:

A61N 1/08

US Classification:

607 30, 607 59

Abstract:

An implantable medical device (IMD) configures one or more operating parameters of the IMD based on a type of source of a disruptive energy field to which the IMD is exposed. The disruptive energy field may, in one example, include magnetic and/or radio frequency (RF) fields generated by an MRI scanner. In one aspect, the IMD may distinguish between different types of MRI scanners and select an exposure operating mode tailored to reduce the effects of the particular type of MRI scanner. In another aspect, the IMD may adjust one or more operating parameters that will be used when the IMD returns to a normal operating mode after exposure to the MRI scanner based on the type of MRI scanner to which the IMD is exposed.

US Patent:

20110106212, May 5, 2011

Filed:

Dec 29, 2009

Appl. No.:

12/648547

Inventors:

Michael L. Ellingson - St. Louis Park MN, US
Hyun J. Yoon - Vadnais Heights MN, US
Piotr J. Przybyszewski - Coon Rapids MN, US
Patrick L. Parish - Circle Pines MN, US

International Classification:

A61N 1/08

US Classification:

607 59

Abstract:

An implantable medical device (IMD) configures one or more operating parameters of the IMD based on a type of source of a disruptive energy field to which the IMD is exposed. The disruptive energy field may, in one example, include magnetic and/or radio frequency (RF) fields generated by an MRI scanner. In one aspect, the IMD may distinguish between different types of MRI scanners and select an exposure operating mode tailored to reduce the effects of the particular type of MRI scanner. In another aspect, the IMD may adjust one or more operating parameters that will be used when the IMD returns to a normal operating mode after exposure to the MRI scanner based on the type of MRI scanner to which the IMD is exposed.