Ultrasound cardiac stimulator
First Claim
Patent Images
1. An ultrasound cardiac stimulation system comprising:
- a spatially selective ultrasound source comprising at least one ultrasound transducer located outside a circulatory system of a body; and
a controller;
wherein the controller generates an electrical response in a heart by directing the ultrasound source to transmit a pulse or pulses of ultrasound to one or more locations in the heart on a periodic basis suitable for cardiac pacing, wherein said of ultrasound pulse or pulses are configured to include a rower level and duration suitable to induce an action potential in the heart.
1 Assignment
0 Petitions
Accused Products
Abstract
An ultrasound cardiac stimulation system comprising: a spatially selective ultrasound source comprising at least one ultrasound transducer located outside the circulatory system; and a controller; where the controller generates an electrical response in the heart by directing the ultrasound source to transmit a high enough power level of ultrasound to one or more locations in the heart.
-
Citations
75 Claims
-
1. An ultrasound cardiac stimulation system comprising:
a spatially selective ultrasound source comprising at least one ultrasound transducer located outside a circulatory system of a body; and a controller; wherein the controller generates an electrical response in a heart by directing the ultrasound source to transmit a pulse or pulses of ultrasound to one or more locations in the heart on a periodic basis suitable for cardiac pacing, wherein said of ultrasound pulse or pulses are configured to include a rower level and duration suitable to induce an action potential in the heart. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62)
-
63. A method of changing a cardiac stimulation sequence for a patient, comprising:
-
a) choosing a test sequence of locations in the heart of the patient, and a time in the cardiac cycle to stimulate each location; b) stimulating the test sequence of locations at the chosen times in the cardiac cycle, using an ultrasound cardiac stimulation system from outside the heart; c) evaluating a change in cardiac synchronization of the patient associated with the test sequence; d) choosing a stimulation sequence for a pacemaker, based at least partly on the change in cardiac synchronization that the test sequence produces; and e) changing a stimulation sequence of the heart to conform to the chosen stimulation sequence by modifying operation of the pacemaker. - View Dependent Claims (64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75)
-
Specification