IV infusion monitoring device
First Claim
1. An IV infusion monitoring device, comprising:
- (a) a load sensor including at least one strain gage for measuring weight of medical liquid in an IV bottle and for sending a measured weight signal to a signal processor,(b) said signal processor havingsignal amplifier for amplifying said measured weight signal and outputting an amplified weight signal,A/D converter for converting said amplified weight signal from analog signal to a group of digital data,microprocessor having software for statistically analyzing said a group of digital data and obtaining liquid level data, said liquid level data including weight of remaining medical liquid in said IV bottle, liquid flow rate, and remaining time from completion of IV process,data transmitter for transmitting said liquid level data to a monitor terminal,(c) said monitor terminal havingdisplay means for displaying said liquid level data,alarm means for give alarm as said weight of remaining medical liquid drops to a predetermined value,(d) power supplier comprising selected one of battery, solar cell and external power source for providing power to said monitoring device.
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Abstract
An IV infusion monitoring device is provided to measure and to display, during whole infusion process, the liquid level data including the weight of remaining medical liquid in an IV bottle, the liquid flow rate and the remaining time from the completion of an IV infusion process. It also gives alarm as the medical liquid in an IV bottle drops to a predetermined low level. The IV infusion monitoring system comprises an electric load sensor, a signal processor, a monitor terminal and a power provided preferably by a battery. The load sensor measures the weight of the medical liquid in the IV bottle. The measured signal is then transmitted to the signal processor for processing and generating the liquid level data, which are then sent to the monitor terminal for display. The monitor terminal can also generate an alarm if the liquid level drops to the predetermined value. Furthermore, the monitoring device combines with a server and a plurality of PDA devices to form a communication network so that a nurse can monitor the IV infusion process from a remote location.
28 Citations
14 Claims
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1. An IV infusion monitoring device, comprising:
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(a) a load sensor including at least one strain gage for measuring weight of medical liquid in an IV bottle and for sending a measured weight signal to a signal processor, (b) said signal processor having signal amplifier for amplifying said measured weight signal and outputting an amplified weight signal, A/D converter for converting said amplified weight signal from analog signal to a group of digital data, microprocessor having software for statistically analyzing said a group of digital data and obtaining liquid level data, said liquid level data including weight of remaining medical liquid in said IV bottle, liquid flow rate, and remaining time from completion of IV process, data transmitter for transmitting said liquid level data to a monitor terminal, (c) said monitor terminal having display means for displaying said liquid level data, alarm means for give alarm as said weight of remaining medical liquid drops to a predetermined value, (d) power supplier comprising selected one of battery, solar cell and external power source for providing power to said monitoring device. - View Dependent Claims (2, 3, 5)
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4. The monitoring device of claims, wherein selected one of magnetic stripe, barcode label and RFID tag being disposed outside said IV bottle for providing IV data.
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6. A method of monitoring IV infusion comprising:
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(a) evaluating initial weight Wo of medical liquid in an IV bottle by a microprocessor, (b) measuring gross weight of said IV bottle including said medical liquid and attachments by a load sensor, and obtaining a measured weight signal, amplifying said measured weight signal by a signal amplifier, and obtaining an amplified weight signal, converting said amplified weight signal from an analog signal to a group of digital data, analyzing statistically said a group of digital data and obtaining said gross weight Wg as a function of time, (c) calculating weight change Δ
W of said IV bottle including said medical liquid and said attachments as a function of time by said microprocessor,(d) calculating weight of remaining medical liquid Wr=Wo−
Δ
W in said IV bottle as a function of time by said microprocessor, - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14)
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Specification