Implantable biosensing transponder
First Claim
1. A passive biosensing device for implantation in an organism, said device including a dye having an optical property that can change in response to its environment, a photosensor for sensing the optical property of said dye, and a transponder for transmitting data corresponding to the sensed optical property to a remote reader, said dye being positioned for exposure to said organism when the device is implanted therein.
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Accused Products
Abstract
A biosensing transponder for implantation in an organism including a human comprises a biosensor for sensing one or more physical properties related to the organism after the device has been implanted, including optical, mechanical, chemical, and electrochemical properties, and a transponder for wirelessly transmitting data corresponding to the sensed parameter value to a remote reader. Disclosed embodiments utilize temperature sensors, strain sensors, pressure sensors, magnetic sensors, acceleration sensors, ionizing radiation sensors, acoustic wave sensors, chemical sensors including direct chemical sensors and dye based chemical sensors, and photosensors including imagers and integrated spectrophotometers. The transponder includes an energy coupler for wirelessly energizing the device with a remote energy source, and a control circuit for controlling and accessing the biosensor and for storing identifying data. The energy coupler can be an inductive circuit for coupling electromagnetic energy, a photoelectric transducer for coupling optical energy, or a piezoelectric transducer for coupling ultrasonic energy. The control circuit can be configured to delay, either randomly or by a fixed period of time, transmission of data indicative of the sensed parameter value to thereby prevent a data collision with an adjacent like device. Methods for using an implantable biosensing transponder include the steps of associating the device with an implant, including temporary implants, prostheses, and living tissue implants, physically attaching the device to a flexible catheter, sensing parameter values in an organism, and transmitting data corresponding to the sensed parameter values to a remote reader.
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Citations
21 Claims
- 1. A passive biosensing device for implantation in an organism, said device including a dye having an optical property that can change in response to its environment, a photosensor for sensing the optical property of said dye, and a transponder for transmitting data corresponding to the sensed optical property to a remote reader, said dye being positioned for exposure to said organism when the device is implanted therein.
- 8. A passive biosensing device for implantation in an organism, said device including a first optical emitter for illuminating an environment external to said device, a photosensor for sensing an optical property from said external environment, and a transponder for transmitting data corresponding to the sensed optical property to a remote reader.
- 17. A passive biosensing device for implantation in an organism, said device including a biosensor for sensing at least one parameter value related to said organism after implantation of said device and a transponder for transmitting data corresponding to the sensed parameter value to a remote reader, said device being configured to delay transmission of the data corresponding to the sensed parameter value when said transponder is energized to thereby prevent said device from transmitting data at the same time as an adjacent like device.
- 20. A remotely energizable biosensing device adapted for implantation in an organism, said device including a biosensor for sensing at least one parameter value related to said organism after implantation, said biosensor being connected to a transponder for coupling data corresponding to said parameter value to a remote reader, said biosensing device having data specific to said biosensor stored therein.
Specification