Medical injector system
AssigneeBayer HealthCare LLC
InventorsKevin Cowan, John Haury, Jared Neff
Life of this patent
Estimating the term…
Abstract
A syringe includes a body and a plunger movably disposed within the body. The syringe may be used with an injector including a drive member. The drive member preferably includes at least one pin adapted to form a retractable abutting connection with an interior of a plunger to enable the drive member to retract the plunger with the body of the syringe.
Claims24
A syringe for use with an injector having a piston with at least one flange and at least one retractable pin, the syringe comprising:
- a syringe body;
- and
- a plunger having a base with an inner surface;
- a ledge projecting inwardly from the inner surface configured to interact with the at least one retractable pin of the piston;
- and
- at least one rib proximal to the ledge and projecting inwardly from the inner surface, the at least one rib having an engagement surface,
- wherein, upon application of a rotational force on the syringe body, the engagement surface on the at least one rib is configured to contact an opposing engagement surface on the at least one flange to prevent rotation of the plunger and transmit the rotational force to the piston thereby enabling removal of the syringe from the injector.
A plunger configured for being movably disposed within a body of a syringe for use with an injector having a piston with at least one flange and at least one retractable pin, the plunger comprising:
- a base with an inner surface,
- a ledge projecting inwardly from the inner surface configured to interact with the at least one retractable pin of the piston, and
- at least one rib proximal to the ledge and projecting inwardly from the inner surface, the at least one rib having an engagement surface, and
- wherein, upon application of a rotational force on the body of the syringe, the engagement surface on the at least one rib is configured to contact an opposing engagement surface on the at least one flange to prevent rotation of the plunger and transmit the rotational force to the piston thereby enabling removal of the syringe from the injector.
An adapter for a syringe comprising:
- a base having a circumferential wall with an inner surface;
- a ledge projecting inwardly from the inner surface;
- and
- at least one rib proximal to the ledge and projecting inwardly from the inner surface,
- wherein the ledge is configured to engage one or more retractable pins on an abutment section of a piston of a fluid injector, and
- wherein the ledge extends continuously around the inner surface of the circumferential wall.
Dependencies are inferred from the claim text.