Directions for RF controlled intelligent microvalve

In this paper, we consider the novel concept of a Radio Frequency (RF) controllable microvalve for di erent medical applications. Wireless communication via a Surface Acoustic Wave Identi cation-mark (SAW ID-tag) is used to control, drive and locate the microvalve inside the human body. The energy required for these functions is provided by RF pulses, which are transmitted to the valve and back by a reader/transmitter system outside of the body. These RF bursts are converted into Surface Acoustic Waves (SAWs), which propagate along the piezoelectric actuator material of the microvalve. These waves cause de ections, which are employed to open and close the microvalve. We identi ed ve important areas of application of the microvalve in biomedicine: 1) fertility control; 2) arti cial venous valves; 3) ow cytometry; 4) drug delivery and 5) DNA mapping.