In-line Microwave Warmer for Blood and Intravenous Fluids.
Abstract
Microwave technology has been used to develop a system capable of providing fast, in-line warming of blood or intravenous(IV) fluids. The first year of this Phase 11 program has resulted in the fabrication and testing of a functional engineering model consisting of four main components: (1) Microwave energy source with variable power control; (2) Heating Chamber with insertable cartridge; (3) Microwave radiometer for fluid temperature measurement; and (4) Feedback control algorithm on an EM PC computer . . he single most important technical achievement has been the integration of these major components into a functional closed-loop feedback control system. To determine the efficacy of the rapid, in-line warming of blood and IV fluids within the microwave energy field, in-vivo tests using baboons have been conducted using a technique of radiolabelling blood components prior to microwave warming. Results show no significant changes in blood component longevity between samples that were warmed with microwave energy versus control samples warmed by a heated water bath. The development work during the upcoming second year will consist of- (1) Fine-tuning the power control and temperature measurement components; (2) Optimizing the insertable cartridge of IV tubing; and (3) Introducing a microprocessor system to replace the IBM PC computer.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 14, 1989
- Accession Number
- ADA260778
Entities
People
- Kenneth L. Carr
- Richard S. Grabowy