Temporary electrode connection for wireless pacing systems
First Claim
1. A method for determining whether tissue is excitable, comprising:
- positioning a delivery system with an implantable and detachable receiver-stimulator attached to a distal end of the delivery system at a location in a patient'"'"'s heart, wherein the receiver-stimulator comprises a cathode and an anode for stimulating the heart and a first detachable temporary electrical connection between the cathode and the distal end of the delivery system, wherein the first temporary electrical connection provides a first conductive path from the cathode to an external monitor via a first conductive wire routed through the delivery system;
transmitting acoustic energy from a controller-transmitter to the receiver-stimulator;
converting the acoustic energy to electrical energy by the receiver-stimulator;
stimulating the heart using the receiver-stimulator at the location in the patient'"'"'s heart by delivering electrical energy to the heart;
determining a likelihood of pacing based on the excitability of the heart tissue by monitoring the electrical activity using the external monitor;
quantifying the delivered electrical energy by using the external monitor;
determining an efficiency of conversion of acoustic energy to electrical stimulation energy at the location that is determined to be excitable by comparing a level of the delivered electrical energy against the acoustic energy transmitted by the controller-transmitter; and
correlating the efficiency of conversion with the likelihood of pacing of the heart issue;
wherein the controller-transmitter is separate from the receiver-stimulator and the external monitor.
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Accused Products
Abstract
Delivery of an implantable wireless receiver-stimulator (R-S) into the heart using delivery catheter is described. R-S comprises a cathode and an anode and wirelessly receives and converts energy, such as acoustic ultrasound energy, to electrical energy to stimulate the heart. Conductive wires routed through the delivery system temporarily connect R-S electrodes to external monitor and pacing controller. R-S comprises a first temporary electrical connection from the catheter to the cathode, and a second temporary electrical connection from the catheter to the anode. Temporary electrical connections allow external monitoring of heart'"'"'s electrical activity as sensed by R-S electrodes to determine tissue viability for excitation as well as to assess energy conversion efficiency.
171 Citations
16 Claims
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1. A method for determining whether tissue is excitable, comprising:
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positioning a delivery system with an implantable and detachable receiver-stimulator attached to a distal end of the delivery system at a location in a patient'"'"'s heart, wherein the receiver-stimulator comprises a cathode and an anode for stimulating the heart and a first detachable temporary electrical connection between the cathode and the distal end of the delivery system, wherein the first temporary electrical connection provides a first conductive path from the cathode to an external monitor via a first conductive wire routed through the delivery system; transmitting acoustic energy from a controller-transmitter to the receiver-stimulator; converting the acoustic energy to electrical energy by the receiver-stimulator; stimulating the heart using the receiver-stimulator at the location in the patient'"'"'s heart by delivering electrical energy to the heart; determining a likelihood of pacing based on the excitability of the heart tissue by monitoring the electrical activity using the external monitor; quantifying the delivered electrical energy by using the external monitor; determining an efficiency of conversion of acoustic energy to electrical stimulation energy at the location that is determined to be excitable by comparing a level of the delivered electrical energy against the acoustic energy transmitted by the controller-transmitter; and correlating the efficiency of conversion with the likelihood of pacing of the heart issue;
wherein the controller-transmitter is separate from the receiver-stimulator and the external monitor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification