Weight monitoring system
First Claim
1. A weight monitoring system for a scale, said system comprisingfirst means for generating a signal corresponding to a weight change of a load on the scale over a period of time;
- second means for generating a signal corresponding to the lapse of time within said period of time; and
a comparison means for comparing said first signal with said second signal over said period of time, said comparison means including a visual read-out means for displaying said signals, a first linear display for chronologically displaying an actual change in weight of the load at a given time in bar form and a second linear display parallel to and adjacent said first linear display for continuously displaying the elapsed time in bar form.
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Accused Products
Abstract
The weight monitoring system provides a visual read-out to compare an actual weight change in a patient undergoing a change of weight treatment against the elapsed time of treatment. In one embodiment, the actual weight loss is displayed in bar form against the elapsed time also in bar form. In a second embodiment, the read-out uses a display screen for graphically displaying a chronological sequence of differences between a programmed weight change and an actual weight change.
The monitoring system can be used to automatically control a dialysis unit or may provide readings which permit a manual adjustment in a dialysis unit.
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Citations
16 Claims
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1. A weight monitoring system for a scale, said system comprising
first means for generating a signal corresponding to a weight change of a load on the scale over a period of time; -
second means for generating a signal corresponding to the lapse of time within said period of time; and a comparison means for comparing said first signal with said second signal over said period of time, said comparison means including a visual read-out means for displaying said signals, a first linear display for chronologically displaying an actual change in weight of the load at a given time in bar form and a second linear display parallel to and adjacent said first linear display for continuously displaying the elapsed time in bar form. - View Dependent Claims (6)
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2. A weight monitoring system for a scale, said system comprising
first means for receiving an actual weight signal from a weighing scale; -
second means for generating a signal corresponding to a desired programmed weight, said second means including a first input means for receiving a signal corresponding to a desired weight change, a second input means for receiving a signal corresponding to a period of time for the weight change and an output means for delivering the programmed weight signal in correspondence to a desired weight at a point in said period of time; a comparator connected to said first means and said second means for receiving and comparing the actual weight signal and said programmed weight signal to produce an error signal in response to a difference therebetween; and a visual read-out means for graphically displaying a chronological sequence of said error signals. - View Dependent Claims (3, 4, 5)
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7. In combination,
a scale for weighing a patient undergoing a change in weight treatment, said scale having means for emitting an output signal corresponding to an actual weight of the patient; - and
a weight monitoring system connected to said scale to receive said actual weight signal, said system including second means for generating a signal corresponding to a desired programmed weight for the patient at a given time during the treatment, said second means including a first input means for receiving a signal corresponding to a desired weight change, a second input means for receiving a signal corresponding to a period of time for the weight change and an output means for delivering the programmed weight signal in correspondence to a desired weight at a point in said period of time. - View Dependent Claims (8, 9, 10)
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11. In combination
a scale for weighing a patient undergoing a change in weight treatment said scale having means for emitting an output signal corresponding to an actual weight of the patient; - and
a weight monitoring system connected to said scale to receive said actual weight signal, said system including first means for generating a signal corresponding to an amount of weight change of the patient over a period of time, second means for generating a signal corresponding to the lapse of time within said period of time, and a visual read-out means for displaying said signals, said read-out means including a first linear display for chronologically displaying an actual change in weight of the patient at a given time in bar form and a second linear display parallel to and said first linear display for continuously displaying the elapsed time in bar form.
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12. A method of monitoring the weight of a patient undergoing a change in weight treatment, said method comprising the steps of
generating a first signal corresponding to an actual change in weight of the patient at predetermined intervals of time during the treatment; -
generating a second signal corresponding to an elapse of time of the treatment; and displaying said signals in bar form and in parallel relation to obtain a visual comparison of the change in weight relative to the elapsed time. - View Dependent Claims (13)
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14. A method of monitoring the weight of a patient undergoing a change in weight, said method comprising the steps of
generating a first signal corresponding to an actual weight of the patient at predetermined intervals of time during treatment; -
generating a second signal corresponding to a desired weight change; generating a third signal corresponding to a period of time for the desired weight change; delivering a programmed weight signal from said second and third signals corresponding to a desired weight for the patient at each said interval of time; comparing said first signal with said programmed weight signal at each interval of time to obtain an error signal in response to a difference between said first signal and said programmed weight signal; and graphically displaying a chronological sequence of said error signals. - View Dependent Claims (15, 16)
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Specification