Pushing device for propulsion prepackaged dosing instrument

Abstract

The invention discloses a pushing device for a propulsion prepackaged dosing instrument. The pushing device comprises a dosing cylinder, a rotating sleeve and a push rod; a guiding spiral groove is formed on the inner wall at the top of the dosing cylinder; one end of the rotating sleeve extends into the dosing cylinder, and the other end of the rotating sleeve is a sealed end; a guiding through groove is formed on the side wall of the rotating sleeve in the axial direction; the push rod is arranged in the rotating sleeve in the axial direction; and a guiding block, which passes through the guiding through groove and extends into the guiding spiral groove, is arranged on the push rod. When the pushing device is in use, a medicine container and a dosing double needle are sealed through a diaphragm in a connector and the rotating sleeve with the sealed top end to achieve the transportation and the storage under an absolutely aseptic state. The rotating sleeve is rotated to drive the push rod to move downwards quickly along the guiding spiral groove to push the medicine container; and the upper needle tip of the dosing double needle pierces through a seal plug on the medicine container, and the lower needle tip pierces through the diaphragm in the connector, so that the medicine container is communicated with the interior of an infusion container instantaneously, and the aseptic docking of the whole process is achieved. Therefore, the aseptic and closed whole process of transpiration, storage, docking, medicine mixing and medicine infusion can be achieved.

Description

technical field [0001] The invention relates to a medical device, in particular to a pushing device used on a medicine dosing instrument. Background technique [0002] In order to add the medicine in the medicine container to the solution in the infusion container (i.e. infusion soft bag or infusion soft bottle), and then infuse the mixed solution into patients in clinical institutions such as hospitals. In the prior art, a drug dosing instrument is often used to connect the drug container with the infusion soft bag or the infusion soft bottle. [0003] The dosing instrument in the prior art mainly includes a dosing cylinder and a dosing double needle, the dosing cylinder forms a cup-shaped structure, and the dosing needle is stuck in the dosing barrel through the double needle support seat, in order to seal the dosing channel , there is a septum on the cross-section of the inner wall at the bottom of the cartridge, and a sealing film is provided on the top of the cartridge...

AI Technical Summary

Problems solved by technology

[0004] The drug dosing instrument with the above structure mainly has the following disadvantages in the drug mixing process: when the drug container is stuck into the drug feeding cartridge, the sealing film on the top of the drug feeding cartridge must be torn off first, and the drug feeding cartridge will be broken when it is inserted. Contact with the outside world, thereby causing pollution

And all the closed dosing instruments that appear in the prior art can only realize the airtightness in the mixing process, but cannot realize the "whole process aseptic airtightness" during the docking of the vial and the dosing instrument, the mixing of medicines and the infusion. "

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