MEDICAL SENSOR WITH AMBIENT LIGHT SHIELDING
First Claim
Patent Images
1. A sensor assembly, comprising:
- a sensor body comprising a first lobe and a second lobe coupled by a neck;
an emitter disposed on a patient-contacting side of the sensor body on the first lobe and configured to transmit light into a patient tissue;
a first detector disposed on the patient-contacting side of the sensor body on the second lobe and configured to detect a first portion of light passing through the patient tissue;
a second detector disposed on the patient-contacting side of the sensor body on the second lobe and configured to detect a second portion of light passing through the patient tissue, wherein the first detector is closer to the emitter than the second detector;
an adhesive layer disposed about at least a portion of a perimeter of the sensor body; and
a shielding element configured to be adhered to the sensor body on a surface opposing the patient-contacting surface and to the adhesive layer, wherein the shielding element, when adhered to the sensor body, extends beyond the perimeter of the sensor body and does not cover the sensor body in an area corresponding to the emitter, the first detector, and the second detector.
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Accused Products
Abstract
Medical sensors assemblies with shielding elements are provided that may be applied to a sensor body to reduce ambient light infiltration. In one embodiment, the shielding elements may be applied only about a portion of the sensor body such that an additive pressure of the shielding element and the sensor body on the patient'"'"'s tissue is reduced. For example, the shielding element may include openings that reduce the total surface area of the sensor body that is covered by the shielding element. In addition, such shielding elements may be provided as separate accessories for a sensor that may be applied only when ambient light infiltration is detected.
11 Citations
22 Claims
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1. A sensor assembly, comprising:
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a sensor body comprising a first lobe and a second lobe coupled by a neck; an emitter disposed on a patient-contacting side of the sensor body on the first lobe and configured to transmit light into a patient tissue; a first detector disposed on the patient-contacting side of the sensor body on the second lobe and configured to detect a first portion of light passing through the patient tissue; a second detector disposed on the patient-contacting side of the sensor body on the second lobe and configured to detect a second portion of light passing through the patient tissue, wherein the first detector is closer to the emitter than the second detector; an adhesive layer disposed about at least a portion of a perimeter of the sensor body; and a shielding element configured to be adhered to the sensor body on a surface opposing the patient-contacting surface and to the adhesive layer, wherein the shielding element, when adhered to the sensor body, extends beyond the perimeter of the sensor body and does not cover the sensor body in an area corresponding to the emitter, the first detector, and the second detector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A sensor assembly, comprising:
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a sensor body; an emitter disposed on a patient-contacting side of the sensor body; at least one detector disposed on the patient-contacting side of the sensor body and configured to detect a first portion of light passing through the patient tissue; and a shielding element comprising an adhesive surface configured to be adhered in part to a patient'"'"'s tissue and in part to the sensor body on a surface opposing the patient-contacting surface layer, wherein the shielding element, when adhered to the sensor body, applies pressure unevenly across the sensor body such that a pressure applied to the patient'"'"'s tissue by the emitter and the at least one detector is less than a pressure applied to the patient'"'"'s tissue by a perimeter of the sensor body. - View Dependent Claims (17, 18, 19, 20, 21)
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22. A method comprising:
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applying a sensor to a patient'"'"'s tissue wherein the sensor comprises a sensor body having a first lobe and a second lobe coupled by a neck such that a first optical element disposed on the first lobe and a second optical element disposed on the second lobe are in direct contact with the patient'"'"'s tissue; receiving an indication that measurements acquired by the sensor are associated with ambient light infiltration; and applying a shielding element in part to the sensor body on a surface opposing a patient-contacting surface and in part to the patient'"'"'s tissue in an area about a perimeter of the sensor body such that the shielding element, when adhered to the sensor body, extends beyond the perimeter of the sensor body and does not cover the sensor body in an area corresponding to the first optical element and the second optical element, wherein the applying of the shielding element is only when the measurements acquired by the sensor are associated with ambient light infiltration.
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Specification