Antenna insulation for an implantable medical device
First Claim
Patent Images
1. An implantable medical device comprising:
- a hermetically sealed housing containing electronic circuitry;
a feedthrough disposed on an external surface of said housing;
an antenna wire having a first distal end, a second distal end and an external surface, said antenna wire being disposed around said external surface of said housing, said antenna wire having said one end connected to said feedthrough so that said antenna wire is in electric communication with at least a portion of said electronic circuitry;
a tube having a hollow cylindrical shape being sealingly disposed about substantially said entire external surface of said antenna wire to prevent fluids from contacting the wire and thereby detuning the antenna wire; and
an antenna surround disposed about said tube.
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Abstract
An implantable medical device includes a hermetically sealed housing that contains electronic circuitry. A feedthrough is disposed on an external surface of the housing. An antenna wire is disposed around the external surface of the housing. The antenna wire has one end connected to the feedthrough so that the antenna wire is in electric communication with at least a portion of the electronic circuitry. A heat shrink tube is sealingly disposed about substantially the entire external surface of the antenna wire to prevent fluids from contacting the antenna wire and thereby detuning the antenna wire. An antenna surround is disposed about the tube.
15 Citations
16 Claims
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1. An implantable medical device comprising:
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a hermetically sealed housing containing electronic circuitry; a feedthrough disposed on an external surface of said housing; an antenna wire having a first distal end, a second distal end and an external surface, said antenna wire being disposed around said external surface of said housing, said antenna wire having said one end connected to said feedthrough so that said antenna wire is in electric communication with at least a portion of said electronic circuitry; a tube having a hollow cylindrical shape being sealingly disposed about substantially said entire external surface of said antenna wire to prevent fluids from contacting the wire and thereby detuning the antenna wire; and an antenna surround disposed about said tube. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of maintaining the tuning of an antenna in an implantable medical device constant, said method comprising the steps of:
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manipulating a hermetically sealed housing containing electronic circuitry and a feedthrough disposed on an external surface of said housing, said feedthrough having an exposed external surface; manipulating an antenna wire having a first distal end, a second distal end and an external surface; placing said antenna wire around said external surface of said housing; connecting said first distal end of said antenna wire to said feedthrough so that said antenna wire is in electric communication with at least a portion of said electronic circuitry; sealingly placing a tube having a hollow cylindrical shape about substantially said entire external surface of said antenna wire to prevent fluids from contacting the wire and thereby detuning the antenna wire; and placing an antenna surround about said tube. - View Dependent Claims (15, 16)
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Specification