Trocar with improved piercing tip

A trocar comprising: a. an assembly housing; b. an assembly of cannula assembly attached to the housing and defining an axial bore therethrough; and c. one obturator assembly for sliding engagement through the axial bore defined by the cannula assembly; said obturator assembly comprising a shaft having a piercing end for insertion into a patient and a blunt penetration connected detachably, the piercing end of the shaft. Such blunt penetration comprises: i. a body with an upper face and a lower face tapering progressively from the axis; It characterized in that said blunt penetration further comprises: ii. an insert blade protruding outward from the body of the penetration point. Said sheet comprising a non-conical, blunt head and two webs have conically pointed and bevelled side edges and lie at an angle of 180 degrees apart between the upper face and the lower face of the body.