Syringe apparatus including readily removable syringe supporting head

Claim 1

A syringe apparatus, the syringe apparatus including a cylindrical body, the cylindrical body including a bottom wall, and a fluid port coaxially directed through the bottom wall, and the cylindrical body including a body entrance opening at an upper distal end of the body spaced from the bottom wall, and a syringe piston slidably mounted within the cylindrical body, with a fluid cavity oriented between the syringe piston and the bottom wall, and the syringe piston including a piston plunger rod mounted coaxially and integrally to the piston projecting rearwardly of the piston extending through the entrance opening, with the plunger rod terminating in a head portion exteriorly of the cylindrical body, and a needle head mounted to the bottom wall, with the needle head including a needle member mounted coaxially to the needle head projecting coaxially of and exteriorly of the cylindrical body, with the needle in coaxial alignment with the fluid port, and a circular groove defined between a bottom surface of the needle head and an exterior surface of the bottom wall, and a cylindrical frangible connecting web extending from the bottom wall to the needle head coaxially aligned relative to the needle head and the cylindrical body, wherein the needle head is arranged for removal from the bottom wall by displacement of the needle head relative to the bottom wall permitting subsequent reception of the needle within the cavity through the fluid port, and the plunger rod includes a coaxial bore directed therethrough, and the head portion of the plunger rod is transparent and spaced from a plunger rod cavity floor, wherein a plunger rod cavity is oriented between the plunger rod cavity floor and the transparent head portion, and wherein the plunger rod cavity floor is oriented parallel relative to a forward face of the piston in confronting relationship relative to the cylindrical body bottom wall within the cavity, and an opaque capsule containing a dye solution positioned within the plunger rod cavity between the transparent head portion and the plunger rod cavity floor, and the needle is receivable within the plunger rod cavity through the coaxial bore.