Implantable wireless sensor for pressure measurement within the heart
First Claim
1. A flexible sensor for wirelessly determining a physical property in a patient'"'"'s heart chamber, which sensor comprises a self-contained resonant circuit comprising a capacitor and an inductor, wherein the circuit is variable in response to the physical property of the patient, and wherein the sensor is sufficiently flexible to be folded for delivery percutaneously.
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Abstract
The progress of a endovascular cardiac repair can be monitored by inserting a pressure transducer sensor using a catheter into a chamber of the heart during endovascular repair and then using a small, hand-held read out device to measure pressure easily, safely, inexpensively and accurately. In one aspect a sensor is introduced into the body by the steps of folding or rolling the sensor into a cylinder, loading it into a catheter, and deploying into the heart chamber by allowing it to unroll or unfold, either by itself or facilitated by the incorporation of a super-elastic alloy component.
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Citations
33 Claims
- 1. A flexible sensor for wirelessly determining a physical property in a patient'"'"'s heart chamber, which sensor comprises a self-contained resonant circuit comprising a capacitor and an inductor, wherein the circuit is variable in response to the physical property of the patient, and wherein the sensor is sufficiently flexible to be folded for delivery percutaneously.
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32. A flexible sensor for wirelessly determining a physical property in a patient'"'"'s heart chamber, which sensor comprises a self-contained resonant circuit a variable in response to said physical property, wherein the sensor is sufficiently flexible to be folded for delivery percutaneously.
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33. A flexible sensor for wirelessly determining a physical property in a patient'"'"'s heart chamber, which sensor comprises a self-contained resonant circuit comprising a capacitor and an inductor, wherein the circuit is variable in response to said physical property, wherein the capacitor is variable in response to the physical property of the patient, of the patient, wherein the inductor is adapted to allow inductance of a current in the resonant circuit when the sensor is subjected to a time-varying electromagnetic field, and wherein the sensor is sufficiently flexible to be folded for delivery percutaneously.
Specification