Estimation and monitoring of patient torso angle
First Claim
1. A person support apparatus comprisinga frame including a head section to support a person'"'"'s upper body and a seat section to support the person'"'"'s sacral region,an angle sensor to sense an angle of elevation of the head section,a hip position sensor to sense a distance, d, between a desired hip position and a measured hip position, andelectronics coupled to the angle sensor and to the hip position sensor, the electronics being configured to estimate the person'"'"'s actual torso angle based on the angle of elevation of the head section as sensed by the angle sensor and the distance, d, as sensed by the hip position sensor.
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Accused Products
Abstract
A person support apparatus supports a person in a laying-down or a seated position. One or more body-mounted sensors detect changes in the position of the person relative to a reference. A control system receives output from the body-mounted sensor or sensors through a remote coupling. The control system uses patient position information obtained from the body-mounted sensors to determine whether the person has experienced a change-in-position and/or a change-in-activity event. Alternatively or in addition, the position of the person situated on a person support apparatus is detected using one or more sensors that are not body-mounted, but rather are coupled to the person support apparatus or to another component of a patient support system. The patient position information is used to estimate the patient'"'"'s torso angle. The estimated torso angle is used to assess the patient'"'"'s condition.
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Citations
20 Claims
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1. A person support apparatus comprising
a frame including a head section to support a person'"'"'s upper body and a seat section to support the person'"'"'s sacral region, an angle sensor to sense an angle of elevation of the head section, a hip position sensor to sense a distance, d, between a desired hip position and a measured hip position, and electronics coupled to the angle sensor and to the hip position sensor, the electronics being configured to estimate the person'"'"'s actual torso angle based on the angle of elevation of the head section as sensed by the angle sensor and the distance, d, as sensed by the hip position sensor.
Specification