Conductive pouch electrode for defibrillation
First Claim
1. A defibrillator adapted for implantation in a patient'"'"'s body, comprising:
- a waveform generator including a metal housing for electronic components of the generator, andan electrically conductive pouch having an effective electrical surface area considerably larger than its geometric surface area, said pouch receiving the generator and making electrical connection with said metal housing to enhance the conductivity of the housing as an electrode of the defibrillator when implanted in the patient'"'"'s body.
1 Assignment
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Accused Products
Abstract
An implantable defibrillator includes a waveform generator having a metal housing for the generator electronics. The housing is used as one of the electrodes for cardioversion and defibrillation of the chambers of the patient'"'"'s heart. An electrically conductive pouch having an effective electrical surface area considerably larger than its geometric surface area is constructed to receive and partially surround the generator, and to make electrical connection with its metal housing to enhance the conductivity of the housing as an electrode. An extension lead is electrically connected to the pouch to further enhance the electric field established during defibrillation.
254 Citations
26 Claims
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1. A defibrillator adapted for implantation in a patient'"'"'s body, comprising:
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a waveform generator including a metal housing for electronic components of the generator, and an electrically conductive pouch having an effective electrical surface area considerably larger than its geometric surface area, said pouch receiving the generator and making electrical connection with said metal housing to enhance the conductivity of the housing as an electrode of the defibrillator when implanted in the patient'"'"'s body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for enhancing the effectiveness of an automatic implantable defibrillator having a metallic can which houses electronic components of a waveform generator of the defibrillator, and which is to be used as one of electrodes for defibrillation, the method comprising the steps of:
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at least partially enclosing the metallic can within and in contact with an electrically conductive pouch having a substantially larger electrical surface area than its geometric surface area, to provide electrical connection between the pouch and the can, and implanting the waveform generator with its metallic can at least partially enclosed by the pouch into a patient'"'"'s body, to improve field strength and vector of an electric field through the patient'"'"'s heart during defibrillation. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification