Pulse oximeter sensor with piece-wise function
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0 Petitions
Accused Products
Abstract
A memory in a sensor is used to store multiple coefficients for a physiological parameter. In one embodiment, not only are the sensor'"'"'s specific calibration coefficients stored in a memory in the sensor for the formula to determine oxygen saturation, but multiple sets of coefficients are stored. The multiple sets apply to different ranges of saturation values to provide a better fit to occur by breaking the R to SpO2 relationship up into different pieces, each described by a different function. The different functions can also be according to different formulas for determining oxygen saturation.
239 Citations
51 Claims
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1-21. -21. (canceled)
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22. A memory, comprising:
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a memory body;
a memory disposed within the memory body, the memory storing coefficients for use in at least one formula for determining oxygen saturation, the coefficients including at least a first set of coefficients and a second set of coefficients, wherein the first and second sets of coefficients are for use in the same formula, different linear formulas, or different nonlinear formulas; and
a coupling configured to communicatively couple the memory to a sensor port on an oximeter monitor. - View Dependent Claims (23)
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24. A method of manufacturing memory, comprising:
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providing a memory body;
providing a memory disposed within the memory body, the memory storing coefficients for use in at least one formula for determining oxygen saturation, the coefficients including at least a first set of coefficients and a second set of coefficients, wherein the first and second sets of coefficients are for use in the same formula, different linear formulas, or different nonlinear formulas; and
providing a coupling configured to communicatively couple the memory to a sensor port on an oximeter monitor. - View Dependent Claims (25)
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26. A method of operating a memory, comprising:
transmitting coefficients from the memory to an oximeter monitor via a coupling with a sensor port of the oximeter monitor, the coefficients for use in at least one formula for determining oxygen saturation, the coefficients including at least a first set of coefficients and a second set of coefficients, wherein the first and second sets of coefficients are for use in the same formula, different linear formulas, or different nonlinear formulas. - View Dependent Claims (27)
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28. An oximeter system, comprising:
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an oximeter sensor, comprising;
a light emitting element configured to emit light into a patient;
a light detector configured to detect the light from the patient; and
an extension cable, comprising;
a first coupling configured to communicatively couple to the oximeter sensor;
a memory storing coefficients for use in at least one formula for determining oxygen saturation, the coefficients including at least a first set of coefficients and a second set of coefficients, wherein the first and second sets of coefficients are for use in the same formula, different linear formulas, or different nonlinear formulas; and
a second coupling configured to communicatively couple the memory to a sensor port on an oximeter monitor an oximeter monitor, comprising;
a drive circuit configured to provide signals to the oximeter sensor via the sensor port; and
a read circuit configured to read the coefficients from the memory in the extension cable via the sensor port. - View Dependent Claims (29)
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30. An oximeter monitor, comprising:
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a drive circuit configured to provide signals to an oximeter sensor that is coupleable to a patient;
a circuit configured to receive coefficients from a memory in a reusable extension cable coupleable with the oximeter sensor; and
a calculation mechanism configured to utilize the coefficients in an algorithm to determine a blood oxygen saturation level of the patient.
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31. A method of monitor operation, comprising:
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providing signals to an oximeter sensor that is coupleable to a patient;
receiving information from a memory via a reusable extension cable that is coupleable to the oximeter sensor, the information comprising coefficients; and
utilizing the coefficients in an algorithm to determine a blood oxygen saturation level of the patient.
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32. A method of manufacturing an oximeter sensor, comprising:
providing a memory of the oximeter sensor having coefficients stored therein, the coefficients for use in at least one formula for determining oxygen saturation, the coefficients including at least a first set of coefficients and a second set of coefficients, wherein the first and second sets of coefficients are for use in the same formula.
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33. A method of operating an oximeter sensor comprising:
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directing light at a patient with a light emitter;
receiving light from the patient with a light detector; and
transmitting coefficients from a memory of the oximeter sensor to a monitor, the coefficients for use in at least one formula for determining oxygen saturation, the coefficients including at least a first set of coefficients and a second set of coefficients for the light emitter, wherein the first and second sets of coefficients are for use in the same formula.
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34. An oximeter system, comprising:
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an oximeter sensor, comprising;
a light emitter configured to direct light at a patient;
a light detector configured to receive light from the patient; and
a memory storing coefficients for use in at least one formula for determining oxygen saturation, the coefficients including at least a first set of coefficients and a second set of coefficients for the light emitter, wherein the first and second sets of coefficients are for use in the same formula;
an oximeter monitor, comprising;
a drive circuit configured to provide signals to the oximeter sensor; and
a read circuit configured to read the coefficients from the memory of the oximeter sensor.
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35. An oximeter monitor, comprising:
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a drive circuit configured to provide signals to an oximeter sensor that is coupleable to a patient;
a read circuit configured to receive coefficients from a memory of the oximeter sensor, the coefficients including first and second sets of coefficients for a light emitter of the oximeter sensor; and
a calculation mechanism configured to utilize the first and second sets of coefficients in a single formula to determine a blood oxygen saturation level of the patient.
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36. A method of monitor operation, comprising:
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providing signals to circuitry of an oximeter sensor that is coupleable to a patient;
receiving information from a memory of the oximeter sensor, the information comprising first and second sets of coefficients for a light emitter of the oximeter sensor; and
utilizing the first and second sets of coefficients in a single formula to determine a blood oxygen saturation level of the patient.
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37. A method of manufacturing an oximeter sensor, comprising:
providing a memory of the oximeter sensor having coefficients stored therein, the coefficients for use in at least one formula for determining oxygen saturation, the coefficients including at least a first set of coefficients and a second set of coefficients for the light emitter, wherein the first and second sets of coefficients are for use in different nonlinear formulas.
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38. A method of operating an oximeter sensor comprising:
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directing light at a patient with a light emitter;
receiving light from the patient with a light detector; and
transmitting coefficients from a memory of the oximeter sensor to a monitor, the coefficients for use in at least one formula for determining oxygen saturation, the coefficients including at least a first set of coefficients and a second set of coefficients for the light emitter, wherein the first and second sets of coefficients are for use in different nonlinear formulas.
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39. An oximeter system, comprising:
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an oximeter sensor, comprising;
a light emitter configured to direct light at a patient;
a light detector configured to receive light from the patient; and
a memory storing coefficients for use in at least one formula for determining oxygen saturation, the coefficients including at least a first set of coefficients and a second set of coefficients for the light emitter, wherein the first and second sets of coefficients are for use in different nonlinear formulas;
an oximeter monitor, comprising;
a drive circuit configured to provide signals to the oximeter sensor; and
a read circuit configured to read the coefficients from the memory of the oximeter sensor.
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40. An oximeter monitor, comprising:
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a drive circuit configured to provide signals to an oximeter sensor that is coupleable to a patient;
a read circuit configured to receive coefficients from a memory of the oximeter sensor, the coefficients including first and second sets of coefficients for a light emitter of the oximeter sensor; and
a calculation mechanism configured to utilize the first and second sets of coefficients in different nonlinear formulas to determine a blood oxygen saturation level of the patient.
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41. A method of monitor operation, comprising:
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providing signals to circuitry of an oximeter sensor that is coupleable to a patient;
receiving information from a memory of the oximeter sensor, the information comprising first and second sets of coefficients for a light emitter of the oximeter sensor; and
utilizing the first and second sets of coefficients in different nonlinear formulas to determine a blood oxygen saturation level of the patient.
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42. A method of manufacturing an oximeter sensor, comprising:
providing a memory of the oximeter sensor having stored therein;
coefficients for use in a formula for determining oxygen saturation, the coefficients including a first set of coefficients and a second set of coefficients; and
an indication of a saturation for use in selecting between the first and second sets of coefficients, wherein the first and second sets of coefficients are used in the same formula.
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43. A method of operating an oximeter sensor comprising:
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directing light at a patient with a light emitter;
receiving light from the patient with a light detector; and
transmitting coefficients from a memory of the oximeter sensor to a monitor, the coefficients for use in a formula for determining oxygen saturation, the coefficients including a first set of coefficients and a second set of coefficients for the light emitter, wherein the first and second sets of coefficients are used in the same formula, wherein selection between the first and second sets of coefficients is based on an indication of a saturation stored in the memory.
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44. An oximeter system, comprising:
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an oximeter sensor, comprising;
a light emitter configured to direct light at a patient;
a light detector configured to receive light from the patient; and
a memory storing coefficients for use a formula for determining oxygen saturation, the coefficients including a first set of coefficients and a second set of coefficients for the light emitter, wherein the first and second sets of coefficients are for use in the same formula, the memory further storing an indication of a saturation for use in selecting between the first and second sets of coefficients; and
an oximeter monitor, comprising;
a drive circuit configured to provide signals to the oximeter sensor; and
a read circuit configured to read the coefficients from the memory of the oximeter sensor.
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45. An oximeter monitor, comprising:
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a drive circuit configured to provide signals to an oximeter sensor that is coupleable to a patient;
a read circuit configured to receive coefficients from a memory of the oximeter sensor, the coefficients including first and second sets of coefficients, the circuit also configured to receive an indication of a saturation for use in selecting between the first and second sets of coefficients; and
a calculation mechanism configured to utilize the first and second sets of coefficients in the same formula to determine a blood oxygen saturation level of the patient.
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46. A method of monitor operation, comprising:
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providing signals to circuitry of an oximeter sensor that is coupleable to a patient;
receiving information from a memory of the oximeter sensor, the information comprising first and second sets of coefficients for a light emitter of the oximeter sensor;
selecting between the first and second set of coefficients based on an indication of saturation stored in the memory; and
utilizing the first and second sets of coefficients in the same formula to determine a blood oxygen saturation level of the patient.
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47. A method of manufacturing an oximeter sensor, comprising:
providing a memory of the oximeter sensor having coefficients stored therein, the coefficients for use in at least one formula for determining oxygen saturation, the coefficients including at least a first set of coefficients and a second set of coefficients for the light emitter, wherein the first and second sets of coefficients are for use in different linear formulas.
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48. A method of operating an oximeter sensor comprising:
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directing light at a patient with a light emitter;
receiving light from the patient with a light detector; and
transmitting coefficients from a memory of the oximeter sensor to a monitor, the coefficients for use in at least one formula for determining oxygen saturation, the coefficients including at least a first set of coefficients and a second set of coefficients for the light emitter, wherein the first and second sets of coefficients are for use in different linear formulas.
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49. An oximeter system, comprising:
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an oximeter sensor, comprising;
a light emitter configured to direct light at a patient;
a light detector configured to receive light from the patient; and
a memory storing coefficients for use in at least one formula for determining oxygen saturation, the coefficients including at least a first set of coefficients and a second set of coefficients for the light emitter, wherein the first and second sets of coefficients are for use in different linear formulas;
an oximeter monitor, comprising;
a drive circuit configured to provide signals to the oximeter sensor; and
a read circuit configured to read the coefficients from the memory of the oximeter sensor.
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50. An oximeter monitor, comprising:
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a drive circuit configured to provide signals to an oximeter sensor that is coupleable to a patient;
a read circuit configured to receive coefficients from a memory of the oximeter sensor, the coefficients including first and second sets of coefficients for a light emitter of the oximeter sensor; and
a calculation mechanism configured to utilize the first and second sets of coefficients in different linear formulas to determine a blood oxygen saturation level of the patient.
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51. A method of monitor operation, comprising:
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providing signals to circuitry of an oximeter sensor that is coupleable to a patient;
receiving information from a memory of the oximeter sensor, the information comprising first and second sets of coefficients for a light emitter of the oximeter sensor; and
utilizing the first and second sets of coefficients in different linear formulas to determine a blood oxygen saturation level of the patient.
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Specification