Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2008-02-14
2010-11-16
Tweel, Jr., John A (Department: 2612)
Communications: electrical
Condition responsive indicating system
Specific condition
C005S618000
Reexamination Certificate
active
07834770
ABSTRACT:
A body weight threshold determination unit determines that the body weight of a user on a bed is at a body weight threshold or higher, and a center-of-gravity position area determination unit determines that the center-of-gravity position thereof has moved to an abnormal position (monitored area). In such a case, the bed user is detected to be in an abnormal position when a body weight center-of-gravity position monitoring unit detects that such a state has continued for a prescribed length of time or longer. When a back-raising operation has been carried out, a movable bedboard determination unit inputs the movable bedboard information, and a monitored area adjustment unit adjusts the monitored area. The monitored area is thereby constantly set to a suitable area in accordance with the state of the movable bedboard. In this manner, the combined information of the body weight information and center-of-gravity position information of the user is determined, whereby the movement of the user can be more accurately monitored with fewer misdetections, high detection accuracy, and high reliability in an electric bed having a movable bedboard.
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Barbenel et al.; “Monitoring the mobility of patients in bed”, Medical & Biological Engineering & Computing, Sep. 1985, pp. 466-468.
McGinn Intellectual Property Law Group PLLC
Paramount Bed Co., Ltd.
Tweel, Jr. John A
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