Pressure and Oxygen Saturation Monitoring Devices and Systems
First Claim
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1. An implantable device for monitoring blood pressure and oxygen saturation in a living being, comprising:
- a fluid filled catheter having a distal portion adapted for insertion within a blood vessel lumen of the living being;
a pressure sensor in communication with the fluid, the fluid communicating blood pressure to the pressure sensor for transduction of the blood pressure into electric signals;
a light source adapted for illuminating blood within the blood vessel lumen; and
a photodetector adapted to sample light reflected by the blood located in the blood vessel lumen and that transduces the sampled light into electrical signals.
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Abstract
Pressure and oxygen saturation monitoring devices and systems are disclosed. The devices, or portions thereof, can be implanted within a subject for monitoring blood pressure and oxygen saturation.
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Citations
35 Claims
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1. An implantable device for monitoring blood pressure and oxygen saturation in a living being, comprising:
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a fluid filled catheter having a distal portion adapted for insertion within a blood vessel lumen of the living being; a pressure sensor in communication with the fluid, the fluid communicating blood pressure to the pressure sensor for transduction of the blood pressure into electric signals; a light source adapted for illuminating blood within the blood vessel lumen; and a photodetector adapted to sample light reflected by the blood located in the blood vessel lumen and that transduces the sampled light into electrical signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A system for monitoring blood pressure and oxygen saturation in a living being, comprising:
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an implantable device, wherein the implantable device comprises; a fluid filled catheter having a distal portion adapted for insertion within a blood vessel lumen of the living being; a pressure sensor in communication with the fluid, the fluid communicating blood pressure to the pressure sensor for transduction of the blood pressure into electric signals; a light source adapted for illuminating blood within the blood vessel lumen; a photodetector adapted to sample light reflected by the blood located in the blood vessel lumen and that transduces the sampled light into electrical signals; and signal processing circuitry electrically coupled to the pressure sensor and photodetector for remotely transmitting data for determining blood pressure and oxygen saturation based upon the electrical signals transduced from the blood pressure and the electrical signals transduced from the sampled light; and wherein the system further comprises a remote processing unit located external to the living being and configured to receive the transmitted data and to determine blood pressure and oxygen saturation values from the received transmitted data. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. An implantable device for monitoring blood pressure and oxygen saturation in a living being, comprising:
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a fluid filled catheter having a distal portion adapted for insertion within a blood vessel lumen of the living being; a membrane positioned in the distal portion of the catheter and coupled to the fluid, the membrane adapted to be deflected in response to blood pressure in the blood vessel lumen; a light source adapted for illuminating blood with the blood vessel lumen; and a photodetector adapted to sample light reflected by the blood located in the blood vessel lumen and to sample light modulated by deflection of the membrane, wherein the photodetector transduces the sampled light into electrical signals. - View Dependent Claims (34, 35)
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Specification