Closed ampoule joint

Abstract

The invention discloses a closed ampoule joint comprising a shell and a syringe needle on the shell. The lower end of the shell is provided with an opening, a boss is disposed on the top of the shell, the syringe needle penetrates through the boss and extends into the shell, the upper end of the boss is provided with a connection tube communicated with the syringe needle, an annular cavity is formed by the syringe needle and the inner side wall of the boss, the annular cavity is communicated with the inside of the shell, the syringe needle is sleeved with an elastic sleeve, and the upper end of the elastic sleeve is fixed in the annular cavity. When the joint is used, the syringe needle penetrates out of the bottom of the elastic sleeve and enters an ampoule, and the elastic sleeve is stressed and squeezed and upward contracts. After use, the elastic sleeve automatically restores the original shape under the action of its own elastic force, wraps the periphery of the syringe needle again and seals a needle making contact with a medicine, so various anti-tumor medicines cannot be exposed in the environment, aerosol is not formed or enters air, and operators are further protected against harm.

Description

technical field [0001] The invention relates to the technical field of medical instruments, and more specifically, the invention relates to a closed type ampoule connector. Background technique [0002] The ampoule connector is used to connect the syringe and the ampoule, inject the drug into the ampoule or take it out of the ampoule. The ampoule connector currently used has its own needle. When using it, insert the needle into the ampoule, and the ampoule The upper end of the joint is provided with a connecting pipe connected with the needle, and the connecting pipe is connected with the syringe, thereby completing the injection process of the medicine. However, the needle in this ampoule structure is exposed, which is particularly easy to cause needle contamination. During the drug injection process, it is easy to contaminate the drug. On the other hand, the needle tip is partly exposed outside, which is easy to hurt the operator, especially for those with side effects. A...

AI Technical Summary

Problems solved by technology

[0003] For this reason, the U.S. Patent discloses a cannula sealing system, the patent number is US9414990B2, the system uses a sleeve to wrap around the outer circumference of the needle, and the spring seat and spring are used to cooperate with the sleeve, so that when in use, the spring shrinks the needle from the sleeve. After use, the spring stretches the needle and retracts it into the sleeve, so that the needle is not exposed and protects the operator. However, this structure is complicated and the cost is too high, so it is not easy to popularize

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