Fluid transfer apparatus
OwnerRobert Q. Riley, Thomas J. Aksamitinventors
Life of this patent
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Abstract
A body having a syringe receptacle for receiving and retaining a syringe having a plunger, a housing containing a drive assembly for moving the plunger of the syringe between a depressed position and an extended position, a grip containing a control assembly for controlling the operation of the drive assembly in programmable modes of operation.
Claims22
A fluid transfer apparatus comprising:
- a syringe having a barrel for holding fluid;
- a plunger receivable within said barrel;
- a body for holding said syringe;
- a drive assembly having a power source, said drive assembly for actuating said plunger in a fill operation and a dispense operation;
- control means for selectively controlling said drive assembly in a plurality of selectable modes of operation;
- and
- sensor means for controlling the amount of current supplied to said drive assembly during operation thereof for inhibiting a fluid pressure within said barrel from exceeding a predetermined fluid pressure level during said dispense operation, and for controlling the amount of current supplied to said drive assembly during operation thereof for inhibiting a vacuum within said barrel from exceeding a predetermined vacuum level during said fill operation.
A fluid transfer apparatus comprising:
- a syringe having a barrel;
- a plunger receivable within said barrel;
- a body for holding said syringe, said barrel being movable between a locked configuration an unlocked configuration;
- a drive assembly having a power source, said drive assembly for actuating said plunger in a fill operation and a dispense operation;
- and
- sensor means for controlling the amount of current supplied to said drive assembly during operation thereof for inhibiting a fluid pressure within said barrel from exceeding a predetermined fluid pressure level during said dispense operation, and for controlling the amount of current supplied to said drive assembly during operation thereof for inhibiting a vacuum within said barrel from exceeding a predetermined vacuum level during said fill operation.
A fluid transfer apparatus in combination with a syringe having a plunger and a barrel for receiving said plunger, said fluid transfer apparatus comprising:
- a body for holding said syringe;
- a drive assembly for actuating said plunger in a fill operation and a dispensing operation, said drive assembly including a plunger gear carried by said plunger and a piston mounted in meshing relation with said plunger gear;
- and
- plunger lock means for selectively detachably engaging the plunger to said body in a locked configuration and for selectively detachably engaging said plunger to said drive assembly.
What is claimed is a fluid transfer apparatus for use in combination with a syringe having a plunger and a barrel for receiving said plunger, said fluid transfer apparatus including:
- a syringe having a plunger and a barrel for receiving said plunger;
- a body for holding said syringe and including a barrel cavity having a barrel cavity width and spaced-apart upper lips defining a lip width therebetween;
- said barrel further including a greatest width slightly smaller than said barrel cavity width but larger than said lip width, and a lesser width slightly smaller than said lip width, said lesser width being received in said barrel cavity through said lip width, whereupon rotation of said barrel from said unlocked configuration engages said greatest width with said barrel cavity width thereby securing said barrel within said barrel cavity in said locked configuration;
- and
- a drive assembly for actuating said plunger in a fill operation and a dispense operation.
Dependencies are inferred from the claim text.