Sensor with signature of data relating to sensor
First Claim
Patent Images
1. A pulse oximeter sensor comprising:
- an emitter capable of emitting light into tissue;
a detector configured to detect light from the emitter after passing through at least a portion of the tissue and capable of converting the detected light into an electrical signal for use by a monitor; and
a memory storing a digital signature, wherein the digital signature comprises functional data residing completely within the digital signature, the functional data capable of facilitating proper operation of the monitor with the pulse oximeter sensor.
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Abstract
A sensor has codes useful for a monitor which can be authenticated as accurate. The sensor produces a signal corresponding to a measured physiological characteristic and provides codes which can be assured of being accurate and authentic when used by a monitor. A memory associated with the sensor stores both data relating to the sensor and a digital signature. The digital signature authenticates the quality of the code by ensuring it was generated by an entity having predetermined quality controls, and ensure the code is accurate.
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Citations
19 Claims
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1. A pulse oximeter sensor comprising:
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an emitter capable of emitting light into tissue; a detector configured to detect light from the emitter after passing through at least a portion of the tissue and capable of converting the detected light into an electrical signal for use by a monitor; and a memory storing a digital signature, wherein the digital signature comprises functional data residing completely within the digital signature, the functional data capable of facilitating proper operation of the monitor with the pulse oximeter sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A pulse oximeter comprising:
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a processing circuit; a sensor input configured to receive a signal from a pulse oximeter sensor indicative of a measured physiological characteristic; a first oximeter memory storing a digital signature received from a sensor memory of the pulse oximeter sensor; a second oximeter memory storing a signature translation program, the signature translation program configured to cooperate with the processing circuit to verify authenticity of the digital signature and to acquire functional data from the digital signature to facilitate operation of the pulse oximeter with the pulse oximeter sensor; and an output configured to present data indicative of a value of the measured physiological characteristic based at least in part upon the signal and/or the functional data. - View Dependent Claims (10, 11, 12, 13)
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14. A method comprising:
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receiving a digital signature from a pulse oximeter sensor; verifying that the digital signature is authentic; retrieving functional data from within the digital signature; performing an operation on a signal from the sensor indicative of a physiologic characteristic based at least in part upon the functional data; and providing an output indicative of a value of the physiological characteristic based at least in part on the signal and/or the functional data. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification