Methods and systems for reducing data acquisition, power and/or processing for pulse oximetry applications
First Claim
1. A method for obtaining information regarding a patient'"'"'s blood oxygen saturation for a period of time using an implantable device implanted within the patient and a non-implanted device external to the patient, while limiting the amount of data that need be stored by the implantable device, the method comprising:
- (a) using a light source of the implantable device to transmit light having a first wavelength and light having a second wavelength through body tissue;
(b) using a light detector of the implantable device to receive a portion of the light having the first wavelength and a portion of the light having the second wavelength and to produce a first signal based on the received portion of light having the first wavelength, and a second signal based on the received portion of light having the second wavelength;
(c) determining, within the implantable device using the first and second signals or data indicative thereof, histogram data indicative of various levels of blood oxygen saturation that occur over the period of time without determining actual values of blood oxygen saturation;
(d) storing, within the implantable device, the histogram data indicative of the various levels of blood oxygen saturation that occur over the period of time;
(e) transmitting the stored histogram data from the implantable device to the non-implanted device, when the relative locations of the patient and the non-implanted device allows for transmission of the histogram data; and
(f) using the non-implanted device to analyze [and/or display the levels of blood oxygen saturation provided by] the histogram data.
1 Assignment
0 Petitions
Accused Products
Abstract
Systems and methods are provided for obtaining measures of blood oxygen saturation using an implantable device implanted within a patient and a non-implanted device external to the patient, while limiting the amount of processing that need be performed by the implantable device. Other embodiments limit the amount of processing that is performed within the implantable device by monitoring changes and blood oxygen saturation without determining actual measures of blood oxygen saturation.
48 Citations
18 Claims
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1. A method for obtaining information regarding a patient'"'"'s blood oxygen saturation for a period of time using an implantable device implanted within the patient and a non-implanted device external to the patient, while limiting the amount of data that need be stored by the implantable device, the method comprising:
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(a) using a light source of the implantable device to transmit light having a first wavelength and light having a second wavelength through body tissue; (b) using a light detector of the implantable device to receive a portion of the light having the first wavelength and a portion of the light having the second wavelength and to produce a first signal based on the received portion of light having the first wavelength, and a second signal based on the received portion of light having the second wavelength; (c) determining, within the implantable device using the first and second signals or data indicative thereof, histogram data indicative of various levels of blood oxygen saturation that occur over the period of time without determining actual values of blood oxygen saturation; (d) storing, within the implantable device, the histogram data indicative of the various levels of blood oxygen saturation that occur over the period of time; (e) transmitting the stored histogram data from the implantable device to the non-implanted device, when the relative locations of the patient and the non-implanted device allows for transmission of the histogram data; and (f) using the non-implanted device to analyze [and/or display the levels of blood oxygen saturation provided by] the histogram data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for obtaining information regarding a patient'"'"'s blood oxygen saturation, the method comprising:
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(a) providing an implantable device that is configured to be implanted into a patient, and after it is implanted into a patient is configured to transmit light having a first wavelength and light having a second wavelength through body tissue, receive a portion of the light having the first wavelength and a portion of the light having the second wavelength and to produce a first signal based on the received portion of light having the first wavelength, and a second signal based on the received portion of light having the second wavelength, — determine, using the first and second signals or data indicative thereof, histogram data indicative of various levels of blood oxygen saturation that occur over a period of time without determining actual values of blood oxygen saturation, and store histogram data indicative of the various levels of blood oxygen saturation that occur over the period of time;
—(b) providing a non-implanted device configured to obtain the histogram data from the implantable device after it is implanted into a patient and when the relative locations of a patient within which the implantable device is implanted and the non-implanted device allows for transmission of the stored histogram data to the non-implanted device, and analyze [and/or display the levels of blood oxygen saturation provided by] the histogram data. - View Dependent Claims (10)
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11. An implantable device for obtaining information regarding blood oxygen saturation of a patient within which the device is implanted, comprising:
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a light source to transmit light having a first wavelength and light having a second wavelength through body tissue, regardless of the location of the patient; a light detector to receive a portion of the light having the first wavelength and a portion of the light having the second wavelength and to produce a first signal based on the received portion of light having the first wavelength, and a second signal based on the received portion of light having the second wavelength, regardless of the location of the patient; means for determining, using the first and second signals or data indicative thereof, histogram data indicative of various levels of blood oxygen saturation that occur over a period of time without determining actual values of blood oxygen saturation; means for storing the histogram data indicative of the various levels of blood oxygen saturation that occur over the period of time; and means for transmitting said stored histogram data to a non-implanted device [when the relative locations of the patient and the non-implanted device allows for transmission of the stored histogram data to the non-implanted device, so that the non-implanted device can analyze and/or display the levels of blood oxygen saturation provided by the histogram data]. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A[n] system for obtaining measures of blood oxygen saturation, comprising:
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an implantable device configured to be implanted into a patient, said implantable device including a light source to transmit light having a first wavelength and light having a second wavelength through body tissue; a light detector to receive a portion of the light having the first wavelength and a portion of the light having the second wavelength and to produce a first signal based on the received portion of light having the first wavelength, and a second signal based on the received portion of light having the second wavelength; means for determining, using the first and second signals or data indicative thereof, histogram data indicative of various levels of blood oxygen saturation that occur over a period of time without determining actual values of blood oxygen saturation; means for storing the histogram data indicative of the various levels of blood oxygen saturation that occur over the period of time; and a non-implantable device configured to communicate with said implantable device after said implantable device is implanted into a patient, said non-implantable device including means for receiving the histogram data stored in the implantable device [when the relative locations of the patient and the non-implantable device allows for transmission of the stored first data and stored second data to the non-implantable device]; and means for analyzing [and/or displaying the levels of blood oxygen saturation using] the histogram data. - View Dependent Claims (18)
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Specification