System and method for multiple site injection
AssigneeCredence Medsystems, Inc.
InventorsConor Edward Shanley, Alan E. Shluzas, Mina M. Leung, Stephen H. Diaz
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Abstract
A system for injecting includes a syringe body having proximal and distal ends, a syringe interior, and a syringe flange at the proximal end thereof. The system also includes an injectable fluid disposed in the syringe interior. The system further includes a finger flange coupled to the syringe flange. Moreover, the system includes a stopper member disposed in the syringe interior. In addition, the system includes a plunger ratchet member coupled to the stopper member. The system also includes a plunger tube disposed coaxially around at least a portion of the plunger ratchet member and operatively coupled thereto.
Claims15
A system for injecting, comprising:
- a syringe body having proximal and distal ends, a syringe interior, and a syringe flange at the proximal end thereof;
- a finger flange coupled to the syringe flange;
- a stopper member disposed in the syringe interior;
- a plunger member coupled to the stopper member;
- a thumb pad configured to apply a distally directed force to the plunger member;
- a plunger tube disposed coaxially around at least a portion of the plunger member and operatively coupled thereto;
- and
- a needle hub assembly coupled to the syringe body at its distal end, the needle assembly including,
- a needle having a needle proximal end feature,
- a hub, and
- a needle latching member configured to selectively prevent the needle from moving proximally relative to the hub,
- wherein the thumb pad is movable relative to the plunger member along a longitudinal axis,
- wherein the plunger member comprises
- a needle retention feature disposed in a plunger interior,
- an energy-storage member disposed in the plunger interior, and
- an energy-storage member latching member disposed in the plunger interior, and
- wherein the needle is at least partially retractable into the plunger interior upon manipulation of the plunger tube to transform the energy-storage member latching member from a latched state to an unlatched state.
Dependencies are inferred from the claim text.