Method and circuit for storing and providing historical physiological data
First Claim
1. A physiological sensor for connecting to a first monitor, comprising:
- means for obtaining signals from a patient indicative of a physiological condition of the patient;
means for sending the signals to said first monitor; and
a sensor memory circuit associated with said physiological sensor and located outside any monitor which processes said signals, said sensor memory stores patient physiological data derived from the signals by said first monitor and which are indicative of the physiological condition, the sensor memory circuit providing the data to any monitor when requested by said any monitor, such that when said sensor is disconnected from said any monitor said sensor memory is physically connected with and moves with said sensor.
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Accused Products
Abstract
A mechanism for storing and providing historical physiological data, such as blood oxygen saturation data, for a patient. In particular, the historical physiological data is stored in a storage medium that “travels” with the patient and is accessible wherever the patient is moved. This is achieved by storing the physiological data within a sensor assembly. At the destination site, a monitor or a device capable of interfacing with the sensor electronics can retrieve and display the data. The historical physiological data allows a clinician or medical personnel at the destination site to assess the condition of the patient for the entire time that the patient has been monitored. Various types of physiological data can be stored including, but not limited to, blood oxygen saturation, heart rate, and temperature data. Compression of the data can be performed to enhance the storage capability.
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Citations
20 Claims
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1. A physiological sensor for connecting to a first monitor, comprising:
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means for obtaining signals from a patient indicative of a physiological condition of the patient;
means for sending the signals to said first monitor; and
a sensor memory circuit associated with said physiological sensor and located outside any monitor which processes said signals, said sensor memory stores patient physiological data derived from the signals by said first monitor and which are indicative of the physiological condition, the sensor memory circuit providing the data to any monitor when requested by said any monitor, such that when said sensor is disconnected from said any monitor said sensor memory is physically connected with and moves with said sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for storing physiological data comprising:
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detecting via a sensor at least one signal indicative of a physiological condition;
conditioning the detected at least one signal to generate data samples;
processing the data samples to generate the physiological data, wherein said physiological data describes the physiological condition; and
storing the physiological data within a sensor memory associated with said sensor and located outside a monitor which processes the data samples, such that when said sensor is disconnected from said monitor said sensor memory is physically connected with and moves with said sensor. - View Dependent Claims (12)
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13. A physiological monitoring instrument comprising:
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a first monitor including conditioning circuitry that receives an electrical signal and processes the electrical signal to provide sampled data, and processing circuitry that processes the sampled data to provide physiological data, wherein the physiological data is indicative of a physiological condition of a patient; and
a sensor coupled to the first monitor, said sensor having a sensor memory circuit, said sensor memory circuit configured to store at least some of the physiological data from said first monitor and provide the data when requested, wherein said memory circuit is located outside any monitor which processes said signals, such that when said sensor is disconnected from said any monitor said sensor memory is physically connected with and moves with said sensor. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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20. An oximeter system for storing and providing historical saturation data of a patient comprising:
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two or more light sources for transmitting light through the patient, wherein said light sources operate at different wavelengths;
a detector that detects optical signals from said light sources and provides electrical signals indicative of the detected optical signals;
conditioning circuitry that processes said electrical signals to provide data samples corresponding to the electrical signals;
processing circuit that receives said data samples and processes said data samples to provide saturation data;
a sensor memory connected with a sensor that stores said saturation data, wherein said sensor memory is located outside a monitor which processes said electrical signals, such that when said sensor is disconnected from said monitor said sensor memory is physically connected with and moves with said sensor; and
circuitry that retrieves the stored saturation data and directs display of said saturation data.
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Specification