Biomedical Engineering Reference
In-Depth Information
drain bodily fluids or dispense drugs to an area of the body. Figures 9.24, 9.25, 9.26,
and 9.27 depict various configurations of such minidiaphragm pumps with rectan-
gular and circular chambers.
An alternative external power system includes a biocompatible induction coil with
gold wire armature that can be transcutanously activated, adjusted, computer interro-
gated, and controlled by a surgeon. The device of the invention is further equipped with
a pair of adjustable variable flow valves placed at the juncture of the inlet and effluent
conduits with the pumping chamber. The valves are used to regulate fluid flow through
the pumping chamber. A pressure-regulating system including a pressure sensor and
pump-controlling microprocessor may also be used with the inventive system.
FIGURE 9.23
A photograph of a fabricated double-diaphragm pump. The size of the IPMNC
is 1-mm width
×
5-mm length
×
0.2-mm thickness.
FIGURE 9.24
Perspective view of two (rectangular and circular chamber) double-diaphragm
minipumps equipped with IPMNC muscles and an inductive receiving coil.
FIGURE 9.25
Side view of the two double-diaphragm minipumps equipped with synthetic
muscles and an inductive receiving coil.
