Wireless, lcr-based, passive sensor systems for implantable deployment using collapsible electromechanics and applications of same

An implantable sensor device comprising:

• a collapsible implantable frame that is transitionable between a crimped delivery configuration and an expanded deployed configuration;
• and
• one or more passive resonant sensor systems configured for attachment to the collapsible implantable frame, each of the one or more passive resonant sensor systems comprising:
• a deformable conductive coil configured to be coupled to the collapsible implantable frame, the deformable conductive coil providing an inductive element of a respective passive resonant sensor system;
• and
• a capacitive pressure sensor electrically coupled to the deformable conductive coil, the capacitive pressure sensor and the deformable conductive coil together forming a resonant circuit having a resonant frequency that varies in response to pressure acting on the capacitive pressure sensor.

An implantable sensor device comprising:

• a collapsible implantable frame that is transitionable between a crimped delivery configuration and an expanded deployed configuration;
• and
• a passive resonant sensor system configured for attachment to the collapsible implantable frame, the passive resonant sensor system comprising:
• a deformable conductive coil configured to be coupled to an outer diameter of the collapsible implantable frame, the deformable conductive coil forming a loop disposed along and covering a localized area of the outer diameter of the collapsible implantable frame, the loop defining a loop axis oriented in a radial direction relative to a longitudinal axis of the collapsible implantable frame, the deformable conductive coil providing an inductive element of the passive resonant sensor system;
• and
• a capacitive pressure sensor electrically coupled to the deformable conductive coil, the capacitive pressure sensor and the deformable conductive coil together forming a resonant circuit having a resonant frequency that varies in response to pressure acting on the capacitive pressure sensor.

A method of measuring pressure using an implantable sensor device, the method comprising:

• implanting within a body of a subject an implantable sensor device including a collapsible implantable frame transitionable between a crimped delivery configuration and an expanded deployed configuration and a passive resonant sensor system attached to the collapsible implantable frame, the passive resonant sensor system including:
• a deformable conductive coil, and
• a capacitive pressure sensor electrically coupled to the deformable conductive coil to form a resonant circuit having a resonant frequency that varies in response to pressure acting on the capacitive pressure sensor;
• inductively coupling an external antenna to the deformable conductive coil;
• and
• measuring the resonant frequency of the resonant circuit to determine the pressure acting on the capacitive pressure sensor.