Wireless device and system for monitoring physiologic parameters
First Claim
1. A miniature self contained sensor module adapted for use in medical applications, the sensor module comprising:
- a first substrate defining an exterior surface of the sensor module and comprising a cavity having an opening at a surface of the first substrate;
a second substrate within the cavity of the first substrate;
at least one miniature sensor supported by the first substrate and exposed on the exterior surface of the sensor module to sense a physiological parameter surrounding the sensor module;
electronics within the cavity, the electronics comprising an inductor coil and an integrated circuit die, the electronics being adapted to receive operating power from a magnetic field with the inductor coil, condition a sensor signal, and transmit a conditioned sensor signal to an external signal detection system via magnetic telemetry;
electrical connections interconnecting the sensor with the electronics, at least a portion of the electrical connections being on the second substrate; and
means for hermetically sealing the opening of the cavity and enclosing the electronics, the second substrate and the electrical connections within the cavity, wherein at least a portion of the sensor is exposed outside the hermetic sealing means for sensing the physiological parameter surrounding the sensor module.
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Accused Products
Abstract
A system for monitoring blood pressure and other physiologic parameters is provided. The system is designed such that it can be delivered to the patient with ease and minimal invasion. The system contains at least one self contained implantable sensing device consisting of a sensor, an electrical circuit for signal conditioning and magnetic telemetry, a biocompatible outer surface and seal, an anchoring method, and an external readout device. The implant is small in size so that it may be delivered to the desired location and implanted using a catheter, although direct surgical implantation is also possible. The circuit, sensor, and antenna for telemetry are packaged together and sealed hermetically to the biologic environment. The larger readout unit remains outside the body but proximal to the implant for minimizing communication distance.
90 Citations
29 Claims
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1. A miniature self contained sensor module adapted for use in medical applications, the sensor module comprising:
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a first substrate defining an exterior surface of the sensor module and comprising a cavity having an opening at a surface of the first substrate; a second substrate within the cavity of the first substrate; at least one miniature sensor supported by the first substrate and exposed on the exterior surface of the sensor module to sense a physiological parameter surrounding the sensor module; electronics within the cavity, the electronics comprising an inductor coil and an integrated circuit die, the electronics being adapted to receive operating power from a magnetic field with the inductor coil, condition a sensor signal, and transmit a conditioned sensor signal to an external signal detection system via magnetic telemetry; electrical connections interconnecting the sensor with the electronics, at least a portion of the electrical connections being on the second substrate; and means for hermetically sealing the opening of the cavity and enclosing the electronics, the second substrate and the electrical connections within the cavity, wherein at least a portion of the sensor is exposed outside the hermetic sealing means for sensing the physiological parameter surrounding the sensor module. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 24, 26, 28)
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15. A miniature self contained module adapted for use in medical applications, the module comprising:
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a first substrate defining an exterior surface of the module and comprising a cavity having an opening at a surface of the first substrate; electronics within the cavity of the first substrate, the electronics comprising an inductor coil and an integrated circuit die bonded to the first substrate, the electronics being adapted to receive operating power from a magnetic field with the inductor coil, condition a signal, and transmit a conditioned signal to an external signal detection system via magnetic telemetry; a second substrate within the cavity of the first substrate; a third substrate bonded to the surface of the first substrate, hermetically sealing the opening of the cavity, and enclosing the electronics and the second substrate within the cavity; at least one miniature device disposed on the third substrate and exposed on the exterior surface of the module, the device being chosen from the group consisting of sensors and actuators; and electrical connections disposed on the second substrate and interconnecting the device with the electronics. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 25, 27, 29)
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Specification