DIELECTRIC FLUID FILLED ACTIVE IMPLANTABLE MEDICAL DEVICES
First Claim
1. A method for backfilling an active implantable medical device (AIMD) with a dielectric fluid, comprising the steps of:
- providing an AIMD having a housing with a fluid inlet/outlet;
evacuating substantially all air and moisture from the housing through the housing inlet/outlet;
filling the housing with a dielectric fluid having a dielectric breakdown strength greater than air, nitrogen or helium; and
sealing the housing inlet/outlet.
1 Assignment
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Accused Products
Abstract
Active implantable medical devices (AIMDs) are backfilled with a dielectric fluid to increase the volts per mil dielectric breakdown strength between internal circuit elements. In a method for backfilling the AIMD with dielectric fluid, substantially all air and moisture is evacuated from the AIMD housing prior to backfilling the AIMD housing with a dielectric fluid having a dielectric breakdown strength greater than air, nitrogen or helium. The AIMD is constructed to accommodate volumetric expansion or contraction of the dielectric fluid due to changes of pressure or temperature of the dielectric fluid to maintain integrity of the AIMD.
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Citations
31 Claims
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1. A method for backfilling an active implantable medical device (AIMD) with a dielectric fluid, comprising the steps of:
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providing an AIMD having a housing with a fluid inlet/outlet; evacuating substantially all air and moisture from the housing through the housing inlet/outlet; filling the housing with a dielectric fluid having a dielectric breakdown strength greater than air, nitrogen or helium; and sealing the housing inlet/outlet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An active implantable medical device (AIMD), comprising:
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a housing; electronic components disposed within the housing; dielectric fluid substantially filling the housing, the dielectric fluid having a dielectric breakdown strength exceeding that of air, nitrogen, or helium; and means for accommodating change of pressure or temperature of the dielectric fluid to maintain housing integrity. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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Specification