Patent ID: 7497850

Claim:
An apparatus, comprising: a hypodermic needle having a cannula defining an outer diameter D 1 , a pointed end with a pointed distal tip defining an outer diameter D 2 and a beveled surface extending from the pointed distal tip to the cannula and defining an axial length L 1 with an outer diameter that diminishes from the cannula outer diameter D 1 to the pointed distal tip outer diameter D 2 ; and an implantable port including a port body, a septum associated with the port body, and a needle stop member associated with the port body including a stop hole with an inlet defining a diameter D 3 that is less than the outer diameter D 1 of the beveled surface and is greater than the diameter D 2 of the pointed distal tip and an obstruction-free axial length L 2 that is greater than the axial length L 1 of the beveled surface, whereby said beveled surface will engage said needle stop member at said hole to stop axial penetration by said needle without engaging said pointed distal tip.