Adjustable continuous injector

Abstract

The invention relates to an adjustable continuous injector. The injector comprises a sleeve, a piston, a core rod, a fixed handle, a movable handle and an adjusting screw rod, wherein the rear part of the sleeve is connected with the fixed handle; a screw hole is formed at the bottom of the fixed handle; the adjusting screw rod passes through the screw hole and is contacted with the lower lateral face of the movable handle; the adjusting screw rod pushes the movable handle to rotate with a pin roll, and the core rod is driven to displace, so that adjustment of injection amount is realized; a slotted hole is formed in the middle of the upper end of the movable handle along the axial direction of the core rod; the movable handle is sleeved on the core rod; a core rod catch, a gasket and a spring are sleeved on the core rod close to protruded cambered surfaces of the front and rear parts of the movable handle; and when the movable handle drives the core rod to move front and back, the movable handle can freely and slightly float up and down relative to the core rod, the core rod is prevented from generating friction, and axial movement of the core rod is not influenced. The adjustable continuous injector has the advantages of reasonable structure, accurate quantitation, convenience in adjustment, reliability in operation, good stability of injection quantity control and long service life.

Description

technical field [0001] The invention relates to a veterinary medical device, in particular to an adjustable continuous syringe. Background technique [0002] We know that at present, the veterinary continuous syringes on the market mainly include a sleeve, a piston, and a core rod. The piston is installed at the front end of the core rod and is driven by the core rod to move back and forth in the sleeve. The communicating infusion channel is provided with a needle seat at the front end of the sleeve. The injection mechanism of a continuous syringe is mostly a piston-type push mechanism with a handle connecting rod. The continuous injection can be realized by holding the handle. When entering the liquid medicine, a joint is connected to a rubber hose at the continuous feeding part, and the other end of the rubber hose is connected to a long needle. Insert into the original liquid medicine bottle, or use the spare liquid storage bottle, pour the medicine of the original medic...

AI Technical Summary

Problems solved by technology

Since the upper end of the movable handle is connected and fixed with the core rod through the connecting block and the fixed pin, if it is gripped continuously and quickly for a long time, there will be friction between the movable handle, the connecting block and the core rod, and a gap will be generated, resulting in unstable movement of the core rod and control of the injection volume. Inaccurate

Images