Implantable micro-electromechanical system sensor
AssigneePacesetter, Inc.
InventorsYong D. Zhao, Apratim Dixit
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Abstract
The disclosure relates in some aspects to an implantable pressure sensor and a method of measuring pressure. In some embodiments pressure may be measured through the use of an implantable lead incorporating one or more pressure sensors. In some aspects a pressure sensor is implemented in a micro-electromechanical system (“MEMS”) that employs direct mechanical sensing. A biocompatible material is attached to one or more portions of the MEMS sensor to facilitate implant in a body of a patient. The MEMS sensor may thus be incorporated into an implantable lead for measuring blood pressure in, for example, one or more chambers of the patient's heart.
Claims6
An implantable lead, comprising:
- a lead body;
- a sensor housing attached to the lead body;
- and
- a micro-electromechanical system (MEMS) sensor enclosed within the sensor housing and comprising:
- a primary pressure sensor generating primary pressure signals indicative of a primary pressure measured by the primary pressure sensor;
- a reference pressure sensor generating reference pressure signals indicative of a secondary pressure measured by the secondary pressure sensor;
- and
- a compensation circuit generating a compensated pressure reading based on the primary pressure signals and the reference pressure signals.
A method of measuring pressure in a heart of a patient, comprising:
- generating a primary pressure reading from a primary pressure sensor of an implanted micro-electromechanical system (MEMS) sensor;
- generating a reference pressure reading from a reference pressure sensor of the MEMS sensor;
- and
- generating a temperature compensated pressure reading based on the primary pressure reading and the reference pressure reading.
Dependencies are inferred from the claim text.