System and method for determining a vital sign of a subject
AssigneeKoninklijke Philips N. V.
InventorsErik BRESCH, Jens MUEHLSTEFF
Life of this patent
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Abstract
The present invention relates to a system for determining a vital sign of a subject by which the likelihood of generating and outputting false alarms is reduced. The system comprises a vital sign processor that processes said vital sign information signal measured by a sensor attached to a subject to obtain a vital sign of said subject, an image analysis unit that detects motion of a marker attached to said sensor from image data obtained by an imaging unit from at least an imaging region containing said sensor, and an alarm unit that generates and outputs an alarm signal based on the measured vital sign information signal and/or obtained vital sign and on the detected motion of said marker.
Claims18
A system for determining a vital sign of a subject comprising:
- a vital sign processor that processes said vital sign information signal measured by a sensor attachable to a subject to obtain a vital sign of said subject,
- an image analysis unit that detects motion of a marker attached to said sensor from image data obtained by an imaging unit from at least an imaging region containing said sensor, and
- an alarm unit that generates and outputs an alarm signal based on the measured vital sign information signal and/or obtained vital sign and on the detected motion of said marker.
A plethysmographic sensor comprising at least one light source that emits light onto a subject's skin covered by said sensor and a light detector that receives light reflected from and/or transmitted through the subject's skin, wherein said sensor is designed such that light from at least one light source is emitted in a direction away from the skin.
A method for determining a vital sign of a subject comprising:
- processing a measured vital sign information signal of said subject,
- detecting motion of a marker attached to said sensor from image data obtained from at least an imaging region containing said sensor, and
- generating and outputting an alarm signal based on the measured vital sign information signal and/or obtained vital sign and on the detected motion of said marker.
A system for determining a vital sign of a subject comprising:
- a plethysmographic sensor comprising at least one light source that emits light onto a subject's skin covered by said sensor and a light detector that receives light reflected from and/or transmitted through the subject's skin, wherein said sensor is designed such that light from at least one light source is emitted in a direction away from the skin,
- a vital sign processor that processes said vital sign information signal measured by said sensor,
- an image analysis unit that detects motion of said sensor from image data obtained by an imaging unit from at least an imaging region containing said sensor, and
- an alarm unit that generates and outputs an alarm signal based on the measured vital sign information signal and/or obtained vital sign and on the detected motion of said sensor.
Dependencies are inferred from the claim text.