抄録
This paper describes a work on the development of an artificial sphincter actuator for the treatment of the functional disorder on bowel movement. The prototype acuator is composed of two shape memory alloy (SMA) plates with all-round shape memory effect (ARSME) ; the shapes of those plates are transformed from straight to arc in the heating process and reversed in the cooling process. This actuator is expected to work as a valve of a digestive canal. Its thermo-mechanical properties including the deformation and force generated during the phase transformation of SMA have been measured. The experiments on an living body show that this actuator has good self-bowel movement function.
