NON-INVASIVE BLOOD PRESSURE SENSOR
First Claim
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1. A non-invasive pressure detection system comprising:
- a plate member comprising a protrusion extending out from one side thereof; and
a piezoelectric transducer portion operatively supported by the plate member, and operatively coupled to the protrusion;
such that, when the protrusion is operatively coupled to a conduit having a fluid stream passing there through, the plate member is configured to receive an indication of the pressure of the fluid, and wherein the plate member is configured to provide the indication of the pressure of the fluid to the piezoelectric transducer portion, and wherein said piezoelectric transducer portion emits an electrical signal related to a pressure of the fluid in response to the indication of pressure from the plate member.
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Abstract
A non-invasive pressure measurement device measures pressure of fluid in a conduit via a piezoelectric transducer positioned proximate to the conduit having a fluid passing therethrough. The piezoelectric transducer is in communication with the conduit via a plate member having a protrusion extending outward from one side of the member. In one application, the device continuously measures blood pressure without the need for an inflatable cuff. Also, the device can detect and measure heart beat pulses from the fluid and utilize heart beat pulse information to provide further characteristics pertaining to the fluid in the conduit.
38 Citations
34 Claims
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1. A non-invasive pressure detection system comprising:
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a plate member comprising a protrusion extending out from one side thereof; and a piezoelectric transducer portion operatively supported by the plate member, and operatively coupled to the protrusion; such that, when the protrusion is operatively coupled to a conduit having a fluid stream passing there through, the plate member is configured to receive an indication of the pressure of the fluid, and wherein the plate member is configured to provide the indication of the pressure of the fluid to the piezoelectric transducer portion, and wherein said piezoelectric transducer portion emits an electrical signal related to a pressure of the fluid in response to the indication of pressure from the plate member. - View Dependent Claims (2, 3, 5, 6, 10, 11, 14, 15, 16)
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17. A method of non-invasively determining pressure in a conduit, the method comprising:
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coupling a protrusion to a conduit having a fluid stream passing there through, wherein the protrusion extends out from one side of a plate member and wherein a piezoelectric transducer portion is operatively supported by the plate member; receiving, at the transducer, an indication of pressure in the conduit; emitting, from the transducer, an electric signal indicative of the pressure in the conduit; and correlating an output of the piezoelectric transducer portion with the pressure in the conduit. - View Dependent Claims (21, 22, 27, 30, 31, 32, 33, 34)
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Specification