The concept of impedance sensitivity factor (ISF) of TCSC has been developed. It has been proved that ISF is the main factor determining the impedance controllable range of TCSC.

For an ideal cells scaffold, it has to possess certain biodegradation rate, good cells affinity, three dimension of multi- porous structure, as well as included controllable released growth factor.

But stressed constantly the approach speed use factor the enhancement caused the approach speed to surpass the controllable scope, brought the disadvantageous influence to the taking off speed change.