Pulse oximetry sensor and technique for using the same on a distal region of a patient's digit
First Claim
1. A pulse oximetry sensor adapted for use on a patient'"'"'s digit, wherein the patient'"'"'s digit includes a distal portion having a distal bone covered with skin and tissue and wherein the distal portion has a length L as measured from a tip of the digit to a transverse fold of skin located generally at a joint between the distal bone and an adjacent bone, the pulse oximetry sensor comprising:
- an emitter and a detector adapted to be located on a distal region of the distal portion of the patient'"'"'s digit when the sensor is properly applied to the patient'"'"'s digit, wherein the distal region is measured as extending from the tip of the distal portion to a location spaced no more than approximately 30% of the length L from the tip, and wherein approximately 30% of the length L is in the range of approximately 5-7 mm; and
a clip-style sensor in which the emitter and detector are disposed, wherein the clip-style sensor is configured such that the tip of the patient'"'"'s digit abuts a stop within the clip-style sensor when the sensor is properly applied to the patient'"'"'s digit.
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Accused Products
Abstract
A sensor may be placed on a distal portion of a patient'"'"'s finger or toe to obtain pulse oximetry measurements. The distal portion of a digit contains few if any large vascular structures that could adversely affect pulse oximetry measurements, but the distal portion does contain microvasculature that carries arterial blood that facilitates pulse oximetry measurements. The sensor may include an emitter and a detector that are spaced apart by an appropriate distance so that they may be located on the distal portion of a patient'"'"'s digit during pulse oximetry measurements.
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Citations
32 Claims
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1. A pulse oximetry sensor adapted for use on a patient'"'"'s digit, wherein the patient'"'"'s digit includes a distal portion having a distal bone covered with skin and tissue and wherein the distal portion has a length L as measured from a tip of the digit to a transverse fold of skin located generally at a joint between the distal bone and an adjacent bone, the pulse oximetry sensor comprising:
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an emitter and a detector adapted to be located on a distal region of the distal portion of the patient'"'"'s digit when the sensor is properly applied to the patient'"'"'s digit, wherein the distal region is measured as extending from the tip of the distal portion to a location spaced no more than approximately 30% of the length L from the tip, and wherein approximately 30% of the length L is in the range of approximately 5-7 mm; and a clip-style sensor in which the emitter and detector are disposed, wherein the clip-style sensor is configured such that the tip of the patient'"'"'s digit abuts a stop within the clip-style sensor when the sensor is properly applied to the patient'"'"'s digit. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for performing pulse oximetry, the method comprising:
placing an emitter and a detector of a pulse oximetry sensor on a distal region of a distal portion of a patent'"'"'s digit to facilitate acquisition of a blood oxygen saturation measurement, wherein; the distal portion of the patient'"'"'s digit includes a distal bone covered with skin and tissue; the distal portion has a length L as measured from a tip of the digit to a transverse fold of skin located generally at a joint between the distal bone and an adjacent bone; the distal region of the distal portion of the patient'"'"'s digit is measured as extending from the tip of the distal portion to a location spaced no more than approximately 30% of the length L from the tip; and approximately 30% of the length L is in the range of approximately 5-7 mm. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A method of manufacturing a pulse oximetry sensor to monitor a distal region of a distal portion of a patient'"'"'s digit, wherein the distal portion includes a distal bone covered with skin and tissue and wherein the distal portion has a length L as measured from a tip of the digit to a transverse fold of skin located generally at a joint between the distal bone and an adjacent bone, wherein the distal region is measured as extending from the tip of the distal portion to a location spaced no more than approximately 30% of the length L from the tip, and wherein approximately 30% of the length L is in the range of approximately 5-7 mm, the method comprising:
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providing a clip-style sensor body configured to be coupled to a distal portion of a patient'"'"'s digit; coupling an emitter and a detector to the clip-style sensor body such that the emitter and the detector are adapted to be located on the distal region of the distal portion of the patient'"'"'s digit when the clip-style sensor body is properly applied to the digit, wherein coupling the emitter and the detector to the clip-style sensor body comprises disposing the emitter on one side of the clip-style sensor body and disposing the detector on another side of the clip-style sensor body; and providing a stop disposed within the clip-style sensor body and configured to abut the patient'"'"'s digit when the clip-style sensor body is properly applied to the patient'"'"'s digit. - View Dependent Claims (17)
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18. A pulse oximetry system comprising:
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a pulse oximetry monitor; and a clip-style pulse oximetry sensor having an emitter and a detector adapted to be located on a distal region of a distal portion of a patient'"'"'s digit when the clip-style sensor is properly applied to the patient'"'"'s digit, wherein; the distal portion of the patient'"'"'s digit includes a distal bone covered with skin and tissue; the distal portion has a length L as measured from a tip of the digit to a transverse fold of skin located generally at a joint between the distal bone and an adjacent bone; the distal region is measured as extending from the tip of the distal portion to a location spaced no more than approximately 30% of the length L from the tip;
the emitter and the detector are adapted to be located no more than approximately 5-7 mm from the tip of the patient'"'"'s digit when the sensor is properly applied to the patient'"'"'s digit; and the clip-style sensor is configured such that the tip of the patient'"'"'s digit abuts a stop within the clip-style sensor when the clip-style sensor is properly applied to the patient'"'"'s digit. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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25. A pulse oximetry sensor adapted for use on a patient'"'"'s digit, the pulse oximetry sensor comprising:
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an emitter adapted to transmit light into the patient'"'"'s digit; and a detector adapted to receive the transmitted light from the patient'"'"'s digit, wherein; the detector is configured to receive at least approximately 50% of the received light from a distal region of a distal portion of the patient'"'"'s digit when the pulse oximetry sensor is properly applied to the patient'"'"'s digit; the distal portion of the patient'"'"'s digit includes a distal bone covered with skin and tissue;
the distal portion has a length L as measured from a tip of the digit to a transverse fold of skin located generally at a joint between the distal bone and an adjacent bone;
the distal region is measured as extending from the tip of the distal portion to a location spaced no more than approximately 30% of the length L from the tip; andapproximately 30% of the length L is in the range of approximately 5-7 mm; and a clip-style sensor body in which the emitter and detector are disposed, wherein the clip-style sensor body is configured such that the tip of the patient'"'"'s digit abuts a stop within the clip-style sensor body when the sensor is properly applied to the patient'"'"'s digit. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32)
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Specification