Power injector and method providing removal of used disposable syringe
First Claim
1. A power injector for injecting fluid from a replaceable syringe and through an injection tube into the body of an animal, where the syringe has a plunger slidable therein and mounting structure at a rearward end thereof that is configured to retain the syringe in a holder when loaded into the holder from the back side of the holder, and where the syringe has an orifice at the front end thereof that is connectable to the back end of the injection tube, the injector comprising:
- a housing;
a power driven ram supported for reciprocal longitudinal movement on the housing and having a plunger coupling at a free end thereof for coupling to the plunger of the syringe;
a syringe mounting head supported on the housing and operable to support a syringe, by engaging the mounting structure thereof, in an injection position at which the ram is extendable from the housing into the rearward end of the syringe to couple to the plunger and to slide the plunger longitudinally in the syringe;
the head including a base fixed to the housing and a syringe holder having an opening therein and moveably linked to the base to move between a closed position thereon at which the syringe is in its injection position and an open position thereon at which the syringe is forwardly loadable into the opening from a rear side of the holder and is rearwardly removable from the opening to the rear side of the holder; and
the holder having the length thereof a slot therethrough having a width sufficient to permit the tube to be moved transversely through the slot from the opening to permit the syringe to be removed from the holder without disconnecting the back end of the tube from the orifice of the syringe and without withdrawing the front end of the tube rearwardly through the opening.
5 Assignments
0 Petitions
Accused Products
Abstract
A power injector is provided for injecting fluid from a replaceable syringe and through an injection tube into the body of an animal. The syringe includes one or more operator-removable and interchangeable syringe mounting heads, at least one of which mounts syringes of a rear loadable type. Preferably an alternative head is provided that accepts front loadable syringes. The mounting head includes an opening and a moveable syringe holder that preferably pivots open to receive a syringe from the back of the holder and pivots closed to orient the rear of the syringe over the ram. The holder has a slot therethrough having a width sufficient to permit an injection tube attached to the syringe nozzle to be moved transversely through the slot to permit the syringe to be removed from the holder without disconnecting the tube from the orifice of the syringe and without withdrawing the tip of the tube rearwardly through the opening. The holder preferably includes a replaceable insert configured to snugly support a rear loadable syringe of a given configuration. One insert is preferably provided in the form of a pressure sleeve configured to support a syringe during high pressure use. The head has a locking mechanism that locks the syringe to the injector, couples the syringe plunger to the ram, locks and releases the head and locks the holder in operating position.
120 Citations
10 Claims
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1. A power injector for injecting fluid from a replaceable syringe and through an injection tube into the body of an animal, where the syringe has a plunger slidable therein and mounting structure at a rearward end thereof that is configured to retain the syringe in a holder when loaded into the holder from the back side of the holder, and where the syringe has an orifice at the front end thereof that is connectable to the back end of the injection tube, the injector comprising:
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a housing; a power driven ram supported for reciprocal longitudinal movement on the housing and having a plunger coupling at a free end thereof for coupling to the plunger of the syringe; a syringe mounting head supported on the housing and operable to support a syringe, by engaging the mounting structure thereof, in an injection position at which the ram is extendable from the housing into the rearward end of the syringe to couple to the plunger and to slide the plunger longitudinally in the syringe; the head including a base fixed to the housing and a syringe holder having an opening therein and moveably linked to the base to move between a closed position thereon at which the syringe is in its injection position and an open position thereon at which the syringe is forwardly loadable into the opening from a rear side of the holder and is rearwardly removable from the opening to the rear side of the holder; and the holder having the length thereof a slot therethrough having a width sufficient to permit the tube to be moved transversely through the slot from the opening to permit the syringe to be removed from the holder without disconnecting the back end of the tube from the orifice of the syringe and without withdrawing the front end of the tube rearwardly through the opening. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification