Flexible optical source for pulse oximetry
First Claim
Patent Images
1. An optical source for guiding light to a target of a patient, the optical source comprising:
- at least one light source configured to emit red light and infrared light, the at least one light source being embedded within a flexible light-conducting sheet;
a flexible photodistributor spaced from the at least one light source, the photodistributor including a light-emitting surface and at least one light-receiving surface optically coupled to the light-conducting sheet, the photodistributor being configured to discharge at least a portion of the emitted red light and at least a portion of the emitted infrared light into a target; and
a housing configured to encase the at least one light source, the photodistributor, and the light-conducting sheet, the housing defining an opening, the housing being configured to reflect light emitted from the at least one light source, the photodistributor being separately formed from the light-emitting sheet.
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Abstract
An optical source for guiding light to a target of a patient includes at least one light source configured to emit red light and infrared light. The at least one light source is embedded within a light-conducting sheet. A photodistributor is spaced from the at least one light source. The photodistributor includes a light-emitting surface and at least one light-receiving surface optically coupled to the light-conducting sheet. The photodistributor is configured to discharge at least a portion of the emitted red light and at least a portion of the emitted infrared light into a target.
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Citations
18 Claims
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1. An optical source for guiding light to a target of a patient, the optical source comprising:
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at least one light source configured to emit red light and infrared light, the at least one light source being embedded within a flexible light-conducting sheet; a flexible photodistributor spaced from the at least one light source, the photodistributor including a light-emitting surface and at least one light-receiving surface optically coupled to the light-conducting sheet, the photodistributor being configured to discharge at least a portion of the emitted red light and at least a portion of the emitted infrared light into a target; and a housing configured to encase the at least one light source, the photodistributor, and the light-conducting sheet, the housing defining an opening, the housing being configured to reflect light emitted from the at least one light source, the photodistributor being separately formed from the light-emitting sheet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for lighting a target with red and infrared light, the method comprising:
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positioning an optical source at least adjacent to the target; emitting each of red light and infrared light from at least one light source; guiding at least a portion of the red light and at least a portion of the infrared light along a flexible light-conducting sheet; and directing at least a portion of the red light and at least a portion of the infrared light into the target via a flexible light-emitting surface that abuts at least a portion of the target; reflecting at least a portion of the red light and at least a portion of the infrared light via at least one reflective particle disposed within a photodistributor; and absorbing at least a portion of the red light and at least a portion of the infrared light via a light-absorbing material disposed substantially surrounding a perimeter of a photodistributor. - View Dependent Claims (13)
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14. An optical source for guiding light to a target of a patient, the optical source comprising:
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at least one light source configured to emit red light and infrared light; a light-conducting sheet molded around at least a portion of the at least one light source, the light-conducting sheet being configured to guide at least a portion of emitted red light and at least a portion of emitted infrared light; a coating layer disposed on at least a portion of the light-conducting sheet, the coating layer being configured to reflect at least a portion of the emitted red light and at least a portion of the emitted infrared light and retain the emitted red light and infrared light in the light-conducting sheet; and an outlet disposed on a portion of the light-conducting sheet that is free from engagement with the coating layer, the outlet being surrounded by at least a portion of the coating layer, the outlet being configured to emit red light and infrared light towards a target. - View Dependent Claims (15, 16, 17, 18)
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Specification