1. Cardiovascular dynamics evaluation apparatus comprising: a pulse wave detection means for detecting pulse waves when external pressure is applied to the artery; a pulse wave amplitude pattern formulation means for formulating a pulse wave amplitude pattern that indicates the dependency characteristic of the pulse wave amplitude in regard to said external pressure from the value detected by said pulse wave detection means; a pattern shape matching means for matching general polyangular patterns to a pattern portion of said pulse wave amplitude pattern that includes at least a part of the envelope curve; and an index derivation means for deriving a cardiovascular dynamics index related to arterial mechanical characteristics and/or cardiac function, based on said general pattern matched shape.