Pre-filled glass syringe

Abstract

The invention relates to a pre-filled glass syringe. The glass syringe comprises a glass outer bushing, a core bar, a piston, a needle and a protective cap, wherein a needle seat is arranged on the front end of the glass outer bushing; the needle is fixedly arranged in a needle hole at a center pole of the needle seat by utilizing an adhesive; the protective cap is composed of a silica gel cap and a glass sheath, the glass sheath is sheathed on the needle seat, and the silica gel cap is arranged in a cavity of the glass sheath; and the needle is directly inserted into a needle protective body of the silica gel cap via a guide hole on the silica gel cap. The pre-filled glass syringe has the advantages of reasonable structure and low manufacture cost, is convenient in operation and use, is convenient and reliable in machining, and can be utilized as a liquid medicine reservoir as well as a syringe, thus being an ideal disposable pre-filled syringe.

Description

technical field [0001] The invention relates to a medicine packaging container, in particular to a pre-filled glass syringe. Background technique [0002] We know that pre-filled syringes are a new type of drug packaging material, which is equivalent to ordinary drug packaging containers when storing drugs, and is equivalent to ordinary syringes when used. It generally includes a jacket, a piston, a core rod, and a needle. The piston is installed at the front of the core rod, and can be driven by the core rod to twitch back and forth in the jacket. The needle is installed and connected to the front end of the jacket, and a silicone protective cap is installed on it. As a prefilled syringe, the jacket is made of glass tube, which is convenient for long-term storage of liquid medicines. At present, the products on the market have the following disadvantages: the inner tapered surface of the glass jacket is directly made into pinholes and glue holes, and the needles are direc...

AI Technical Summary

Problems solved by technology

At present, the products on the market have the following deficiencies: the inner cone surface of the glass jacket is directly made into pinholes and glue holes, and the needles are directly installed in the connecting pinholes of the glass jacket. The pinholes are too thin to bring a lot of trouble to the production of the glass jacket. ;Use a silicone protective cap to completely wrap and protect the needle. Due to the high cost of rubber, the cost of this product has also increased a lot

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