초록 ▼

The syringe has an outer casing open at one end and a cylinder reciprocable within the casing in which latter works a plunger; the cylinder is spaced from the inner periphery of the casing to form an outer chamber and the space within the cylinder forms an inner chamber, each chamber to contain the

The syringe has an outer casing open at one end and a cylinder reciprocable within the casing in which latter works a plunger; the cylinder is spaced from the inner periphery of the casing to form an outer chamber and the space within the cylinder forms an inner chamber, each chamber to contain the ingredients to be mixed to form a composition for injection; means being provided at the discharge end of the casing for the attachment of a needle for injection; sealing means at the open end of the casing are extended outwardly along the cylinder to protect the exterior of the cylinder from contamination during its withdrawal for the purpose of mixing. In another form the discharge end of the cylinder is adapted to be extended through the discharge sealing gland to receive the syringe needle; the sealing gland at the discharge end of the cylinder has suitable spiral grooves facing the cylinder so that when the cylinder is retracted its nozzle end discharges into the spiral grooves; the inner and outer chambers are of such capacity that when the cylinder is in mixing position and when the cylinder is retracted to locate the nozzle, it enlarges the capacity of the outer chamber creating suction to facilitate the discharge of the contents of the inner chamber by the plunger without producing undue pressure in the outer chamber, a negative or vacuum effect is created within the combined inner and outer chamber environment when the cylinder is in mixing position.

대표청구항 ▼

A compartmental syringe comprising an outer casing, a cylinder within the outer casing being spaced from the inner periphery of the outer casing forming an outer chamber, the interior of said cylinder forming an inner chamber, said cylinder being axially reciprocable in said outer housing, sealing m

A compartmental syringe comprising an outer casing, a cylinder within the outer casing being spaced from the inner periphery of the outer casing forming an outer chamber, the interior of said cylinder forming an inner chamber, said cylinder being axially reciprocable in said outer housing, sealing means at one end of the outer casing, said cylinder extending through said sealing means, a plunger working in the cylinder, a discharge nozzle on the inner end of the cylinder within said outer casing, nozzle sealing means normally to seal said discharge nozzle from the outer chamber in an initial position, said nozzle sealing means unsealing said nozzle when withdrawn from said nozzle sealing means so as to communicate said inner chamber and outer chamber, whereby the working of the plunger intermixes the contents of the inner and outer chambers and sucks the mixture into the inner chamber, and whereby said nozzle sealing means reseals said nozzle upon the reinsertion of said inner cylinder to said initial position.