Safety needle with collapsible sheath

In combination,

• a housing;
• a needle extending from said housing;
• a rigid cap concentrically disposed over said needle and having a bore for passage of said needle therethrough, said cap being movable relative to said needle from a first position with said needle extending through said bore to a second position with an end of said needle disposed therein in spaced relation to said bore;
• means disposed in said cap for selectively sealing off said bore to the passage of said needle therethrough;
• and
• a tubular sheath concentrically disposed on and about said needle in a collapsed state and secured to and between said housing and said cap, said sheath being longitudinally extendable from said collapsed state to an extended state in response to movement of said cap from said first position to said second position thereof.

In combination,

• a housing;
• a Huber needle having a first leg extending from said housing and a second leg extending perpendicularly of said first leg;
• a cap disposed over said second leg of said needle and having a bore for passage of said second leg therethrough, said cap being movable relative to said second leg of said needle from a first position with said needle extending therethrough to a second position with an end of said needle disposed therein in sealed relation;
• and
• a tubular sheath concentrically disposed on and about said needle in a collapsed state and secured to and between said housing and said cap, said sheath being extendable from said collapsed state to an extended state in response to movement of said cap from said first position to said second position thereof.