Bed pre-exit patient monitor

摘要

Improvements in a bed pre exit patient monitor to determine when a patient has moved to an edge of a bed prior to the patient leaving the bed by measuring load on a single wheel by slightly lifting the wheel with load sensing rods that measure the wheel load. A variety of different alarm signals are used signal to warn a care giver. The device is self-contained, self-secures and removes itself from a variety of different diameter wheels. The device can auto calibration when the wheel is initially lifted and also calibrate when a patient is resting on a bed. The monitoring establishes a threshold load without a patient and with a patient to allow the software to determine when the on an edge of a bed and also when a patient has completely left the bed. Software filtering rejects patient movement to prevent false alarms.

主权项

1. A bed pre-exit patient monitor for determining when a patient has moved to an edge of a bed prior to the patient leaving the bed by measuring a load on a single wheel of the bed by slightly lifting said single wheel with two parallel members to measure the load of said single wheel, the bed pre-exit patient monitor comprising:
a two-direction drive motor secured to at least one of the two parallel members on a stationary base of the bed pre-exit patient monitor; at least one of said two parallel members secured to a load sensor; wherein the at least one of said two parallel members is moved by said two-direction drive motor toward to the other one of the two parallel members to at least partially lift said single wheel of the bed placed between said two parallel members to allow said load sensor to determine the load on said load sensor; said at least partially lifting is determined by said load sensor; a controller configured to determine a bed empty load and a bed full load using said load sensor, wherein the bed empty load represents the bed without the patient and the bed full load represents the bed with the patient; and said load from said single wheel is measured to determine when the patient on said bed is on an edge of said bed by determining a temporal increase or decrease on said single wheel transition between said bed empty load and said bed full load; wherein the bed-pre-exit patient monitor further includes at least one start button or switch that operates said two-direction drive motor to move the at least one of said two parallel members toward to the other one of said two parallel members until said load sensor determines when said single wheel is supported on said parallel members and then stops the operation of said two-direction drive motor.