A new injection rate estimation technique for on-site screening test of medication infusion pump by nurses

Abstract

Medication infusion pumps are the most popular device in almost all areas of a hospital; therefore, it is important to frequently inspect the accuracy of the infusion pump operation to prevent underdose/overdose accidents. However, the conventional infusion pump inspection devices are not suitable for quick and convenient on-site inspection by nurses. In this study, a new IR estimation technique for peristaltic infusion pumps that facilitates on-site pre-screening test with shorter inspection time was proposed. A thin membrane potentiometer was attached to a catheter and the actual IR was estimated based on a time interval between two successive line pushes of an identical cam follower using power function estimation. To evaluate the performance of the proposed IR estimation technique, in vitro experiments were performed using 11 infusion pumps (three for Infusion Pump SET 1 ( IPSET-1) and eight for Infusion Pump SET 2 ( IPSET-2)) with the same model. In experiments, error rate between the actual and the measured values (using conventional inspection device) were 0.04–1.17% range for IPSET-1 and 2.09–4.32% for IPSET-2, and those between the actual and the estimated values (using proposed method) were 0.02–0.62% range for IPSET-1 and 1.31–4.23% for IPSET-2. The proposed technique had almost equivalent performance with a commercial inspection device, but the time for inspection was reduced to almost one third. We expect that the proposed technique can provide a tool for simple and convenient on-site pre-screening of infusion pumps by nurses to improve patient safety.

Multi-modal infusion pump real-time monitoring technique for improvement in safety of intravenous-administration patients

“…To monitor the mismatch between the IP panel setting and actual infusion state in real time, we extended our recent study on the off-line IR estimation. 18 In the previous study, we (1) inserted a membrane potentiometer (overlapped with an IV catheter) into the actuator of an IP, (2) measured the ICI values using the membrane potentiometer, (3) obtained the relationship between the ICI and actual IR measured using an electronic balance (i.e., IR REAL ) by applying the power function estimation, and (4) determined the relevance of the estimated IR (i.e., IR EST ) by comparing it to the IR panel setting (i.e., IR SET ). Kim et al 18 have presented a more detailed description of the ICI-based IR estimation technique.…”

“…In our recent report, we proposed an off-line infusion rate (IR) estimation protocol for a peristaltic IP using a thin membrane potentiometer inserted into the mechanical actuator of the IP, and we also proposed a curve fitting technique, which is suitable for an on-site prescreening test of the IP by nurses. 18 However, the overlapped insertion of the IV catheter and membrane potentiometer into the IP could reduce the IR owing to the depth of the utilized membrane potentiometer. Therefore, it was not suitable for continuous real-time IR monitoring that is required to detect the mismatch between the IP panel setting and actual infusion state during the operation.…”

Convolutional neural network-based ambient light-independent panel digit surveillance technique for infusion pumps

“…Utilizing this result, for example, long-term, continuous closed-loop monitoring of infusion pump operation can be realized by combining the currently proposed ambient light-independent panel digit monitoring technique and the previously proposed membrane sensor-based actual infusion rate monitoring technique. 5,17…”