Recharge of an implantable device in the presence of other conductive objects
AssigneeMedtronic, Inc.
InventorsDavid P. Olson, Todd A. Kallmyer
Life of this patent
Estimating the term…
Abstract
Techniques are disclosed for controlling the transcutaneously transfer of energy to an implantable medical device (IMD) that is in proximity to a conductive object that conducts current in the presence of an electromagnetic field. Various techniques are disclosed for estimating or determining the levels of heat dissipation associated with the object during the transfer of energy. If too much heat is being dissipated, the transfer of energy may be adjusted so that heating remains below acceptable levels.
Claims28
A system to transfer energy to an Implantable Medical Device (IMD) that is located in proximity to a conductive object that is associated with an estimated amount of heat, comprising:
- a primary coil configured to transcutanously transfer energy to the IMD located in proximity to the conductive object;
- and
- processing circuitry configured to control the transfer of energy to the IMD based on the estimated amount of heat associated with the object during the transfer of energy to the IMD, wherein the IMD comprises a housing and the conductive object is located outside of the housing.
A method, comprising:
- transcutanously transferring energy to an implantable medical device (IMD) that is located in proximity to a conductive object;
- and
- controlling, via processing circuitry the transcutaneous transfer of energy to the IMD based on an estimated amount of heat associated with the object during the transfer of the energy, wherein the IMD comprises a housing and the object is located outside of the housing.
A system to transfer energy to an implantable medical device (IMD) that is located in proximity to another object, the other object being conductive and being associated with an estimated amount of heat, comprising:
- means for transcutanously transferring energy to the IMD located in proximity to the conductive object;
- and
- means for controlling the transfer of energy to the IMD based on the estimated amount of heat associated with the object during the transfer of energy, wherein the IMD comprises a housing and the object is located outside of the housing.
A non-transitory storage medium for storing instructions to cause a control circuit to:
- transcutanously transfer energy to an implantable medical device (IMD) that is located in proximity to a conductive object;
- and
- control the transfer of energy to the IMD based on an estimated amount of heat associated with the object during the transfer of energy, wherein the IMD comprises a housing and the object is located outside of the housing.
Dependencies are inferred from the claim text.