Forehead sensor placement
First Claim
1. A method of determining a physiological parameter using a pulse oximeter, comprising:
- placing an oximetry sensor comprising an emitter and a detector on the forehead of a patient, such that the sensor is placed on the lower forehead region above the eyebrow with the emitter and the detector placed lateral of the iris and proximal the temple such that the axis connecting the emitter and detector lies within 8 mm of the top of the eyebrow; and
operating the pulse oximeter to obtain the physiological parameter.
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Accused Products
Abstract
Forehead oximetry sensor devices and methods for determining physiological parameters using forehead oximetry sensors. One method includes placing an oximetry sensor on the forehead of a patient, such that the sensor is placed on the lower forehead region, above the eyebrow with the sensor optics placed lateral of the iris and proximal the temple; and operating the pulse oximeter to obtain the physiological parameter. In one aspect, the method also includes providing and placing a headband over the oximetry sensor, or alternately, the sensor is a headband-integrated sensor. The headband has an elastic segment sized to fit around the patient'"'"'s head. The headband also includes a non-elastic segment that is smaller than and attached with the elastic segment. The non-elastic segment is sized to span a portion of the elastic segment when the elastic segment is stretched. In addition, the non-elastic segment is larger than the portion of the elastic segment it spans when the elastic segment is not stretched. When the headband or the headband-integrated sensor is sufficiently tight, it delivers a pressure in the range higher than the venous pressure and lower than the capillary pressure to the forehead of the patient.
695 Citations
14 Claims
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1. A method of determining a physiological parameter using a pulse oximeter, comprising:
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placing an oximetry sensor comprising an emitter and a detector on the forehead of a patient, such that the sensor is placed on the lower forehead region above the eyebrow with the emitter and the detector placed lateral of the iris and proximal the temple such that the axis connecting the emitter and detector lies within 8 mm of the top of the eyebrow; and operating the pulse oximeter to obtain the physiological parameter. - View Dependent Claims (2, 3, 4)
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5. A method of determining a physiological parameter using a pulse oximeter, comprising:
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providing a headband comprising an elastic segment sized to fit around the patient'"'"'s head and a non-elastic segment being smaller than and attached with the elastic segment, the non-elastic segment sized to span a portion of the elastic segment when the elastic segment is stretched, the non-elastic segment being larger than the portion of the elastic segment it spans when the elastic segment is not stretched; placing an oximetry sensor comprising an emitter and a detector on the forehead of a patient, such that the sensor is placed on the lower forehead region above the eyebrow with the emitter and the detector placed lateral of the iris and proximal the temple; placing the headband over the oximetry sensor; and operating the pulse oximeter to obtain the physiological parameter.
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6. A method of determining a physiological parameter using a pulse oximeter, comprising:
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placing an oximetry sensor in a region on the forehead that is absent superficial vasoactive vessels perfused with blood from external carotid circulation; and operating the pulse oximeter to obtain the physiological parameter.
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7. A method of determining a physiological parameter using a pulse oximeter, comprising:
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placing an oximetry sensor comprising an emitter and a detector on the forehead of a patient, such that the sensor is placed on the lower forehead region above the eyebrow with the emitter and the detector placed lateral of the iris and proximal the temple such that one of the sensor emitter and detector lies within 5 mm of a line directly above the patient'"'"'s iris and the other of the sensor emitter and detector lies lateral the iris; and operating the pulse oximeter to obtain the physiological parameter.
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8. A method of determining a physiological parameter using a pulse oximeter, comprising:
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placing an oximetry sensor comprising an emitter and a detector on the forehead of a patient, on or directly above the eyebrow such that the sensor is no more than 8 mm from the eyebrow, and such that the emitter and detector are both located lateral of the supratrochlear and supraorbital arteries and medial the superficial temporal artery; and operating the pulse oximeter to obtain the physiological parameter. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification