MRI operation modes for implantable medical devices
First Claim
1. An implantable medical device comprising:
- a detector configured to sense a MRI electromagnetic field;
communications circuitry configured to receive a command from an external device; and
memory and a processor configured to;
switch operation of the implantable medical device from a non-MRI mode to an MRI mode upon reception of the command by the communications circuitry outside the presence of the MRI electromagnetic field, andwhile in the MRI mode, switch operation of the implantable medical device from a first mode of operation to a second mode of operation based on the MRI electromagnetic field being detected, wherein the implantable medical device is prohibited from switching operation from the first mode to the second mode while operating in the non-MRI mode.
0 Assignments
0 Petitions
Accused Products
Abstract
One embodiment of the present invention relates to an implantable medical device (“IMD”) that can be programmed from one operational mode to another operational mode when in the presence of electro-magnetic interference (“EMI”). In accordance with this particular embodiment, the IMD includes a communication interface for receiving communication signals from an external device, such as a command to switch the IMD from a first operation mode to a second operation mode. The IMD further includes a processor in electrical communication with the communication interface, which is operable to switch or reprogram the IMD from the first operation mode to the second operation mode upon receiving a command to do so. In addition, the IMD includes a timer operable to measure a time period from when the processor switches the IMD to the second operation mode. In accordance with this aspect of the invention, the processor is in electrical communication with the timer, and is further operable to switch the IMD from the second operation mode back to the first operation mode when the measured time period reaches a predetermined time period.
353 Citations
20 Claims
-
1. An implantable medical device comprising:
-
a detector configured to sense a MRI electromagnetic field; communications circuitry configured to receive a command from an external device; and memory and a processor configured to; switch operation of the implantable medical device from a non-MRI mode to an MRI mode upon reception of the command by the communications circuitry outside the presence of the MRI electromagnetic field, and while in the MRI mode, switch operation of the implantable medical device from a first mode of operation to a second mode of operation based on the MRI electromagnetic field being detected, wherein the implantable medical device is prohibited from switching operation from the first mode to the second mode while operating in the non-MRI mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A method of operating an implantable medical device comprising:
-
receiving a command from an external device; switching, upon receiving the command, operation of the implantable medical device from a non-MRI mode to an MRI mode prior to a MRI scan while outside the presence of an MRI electromagnetic field, and detecting the MRI electromagnetic field of the MRI scan with a detector of the implantable medical device while the implantable medical device operates in the MRI mode; and switching operation of the implantable medical device from a first mode of operation to a second mode of operation based on the MRI electromagnetic field being detected, wherein the implantable medical device is prohibited from switching operation from the first mode to the second mode while operating in the non-MRI mode. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
-
Specification