Implantable micro-electromechanical system sensor
First Claim
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1. An implantable lead comprising:
- a lead body;
a sensor housing attached to the lead body, and defining an internal space, and comprising at least one outer wall defining an aperture;
a micro-electromechanical system (MEMS) pressure sensor comprising a diaphragm, wherein;
the pressure sensor is positioned within the internal space and adjoins the aperture of the sensor housing such that an outer surface of at least a portion of the diaphragm is exposed to the aperture; and
the pressure sensor is sized and contained within the internal space such that during thermal expansion the pressure sensor is free to expand in at least one direction; and
a biocompatible material attached to the outer surface.
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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.
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Citations
14 Claims
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1. An implantable lead comprising:
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a lead body; a sensor housing attached to the lead body, and defining an internal space, and comprising at least one outer wall defining an aperture; a micro-electromechanical system (MEMS) pressure sensor comprising a diaphragm, wherein; the pressure sensor is positioned within the internal space and adjoins the aperture of the sensor housing such that an outer surface of at least a portion of the diaphragm is exposed to the aperture; and the pressure sensor is sized and contained within the internal space such that during thermal expansion the pressure sensor is free to expand in at least one direction; and a biocompatible material attached to the outer surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification