Spatially decoupled twin secondary coils for optimizing transcutaneous energy transfer (TET) power transfer characteristics
First Claim
1. An implantable medical device that communicates with a primary transcutaneous energy transfer (TET) circuit external to a patient via a transcutaneous energy transfer channel, the implantable medical device comprising:
- a housing a first TET coil received by the housing;
a second TET coil received by the housing, electrically coupled in parallel with the first TET coil, and physically proximate to and centered on a longitudinal axis of the first TET coil; and
control circuitry in electronic communication with the parallel first and second TET coils and operably configured to utilize power transferred to the first and second TET coils.
3 Assignments
0 Petitions
Accused Products
Abstract
An implantable device, such as an infuser device for bidirectional hydraulically controlling a medical artificial sphincter, enhances power transfer characteristics to a secondary coil thereby allowing implantation to greater physical depths and/or enclosing the secondary coil within a housing of the infuser device. The enhanced power transfer is achieved with multiple coils that are longitudinally aligned and physical and electrical parallel to form the secondary loop of a transcutaneous energy transfer system (TET) instead of a single coil. It better optimizes the power transfer from a parallel tuned tank circuit primary coil to an implanted secondary series tuned tank circuit coil.
60 Citations
23 Claims
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1. An implantable medical device that communicates with a primary transcutaneous energy transfer (TET) circuit external to a patient via a transcutaneous energy transfer channel, the implantable medical device comprising:
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a housing a first TET coil received by the housing;
a second TET coil received by the housing, electrically coupled in parallel with the first TET coil, and physically proximate to and centered on a longitudinal axis of the first TET coil; and
control circuitry in electronic communication with the parallel first and second TET coils and operably configured to utilize power transferred to the first and second TET coils. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A transcutaneous energy transfer (TET) system, comprising:
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a primary transcutaneous energy transfer (TET) circuit external to a patient; and
an implantable medical device, comprising;
a housing including a coil receptacle having a longitudinally aligned and proximate first portion and second portion, a first TET coil received by the first portion of the coil receptacle, a second TET coil received by the second portion of the coil receptacle electrically coupled in parallel with the first TET coil, resonance circuitry in electrical communication with the first and second TET coils to form a resonant tank circuit, and control circuitry in electronic communication with the parallel first and second TET coils and operably configured to utilize power transferred to the first and second TET coils. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. An inductive energy transfer system, comprising:
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a primary coil assembly operably configured to induce a magnetic field having a resonant frequency through a barrier; and
a separate device spaced apart from the primary coil assembly by the barrier, the separate device comprising;
a front secondary coil substantially longitudinally aligned to an axis of the primary coil, a back secondary coil electrically coupled in parallel with, physically proximate to, and aligned parallel with the front secondary coil, resonance circuitry in electrical communication with the front and back secondary coils to form a resonant tank circuit having a pass band selected to encompass the resonant frequency of the primary coil assembly, and control circuitry in electronic communication with the parallel front and back secondary coils and operably configured to utilize electrical power received therefrom. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
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Specification