Push device used on preassembly medicating instrument

Abstract

The invention discloses a push device used on a push preassembly medicating instrument. The push device comprises a medicating barrel, a rotating sleeve and a push rod, wherein a guide helical slot is formed on the inner wall of the top of the medicating barrel along the axial direction; one end of the rotating sleeve extends into the medicating barrel, and the other end of the rotating sleeve is a sealing end; a guide through slot is formed on the side wall of the rotating sleeve along the axial direction; the push rod is arranged in the rotating sleeve along the axial direction; and a guide block which passes through the guide helical through slot and extends into the guide slot is arranged on the push rod. During use, due to a diaphragm in an interface and the rotating sleeve of which the top is sealed, a medicine container and the medicating dual needle are in sealed states; therefore, an effect of absolute germfree transpiration and storage can be achieved; the rotating sleeve is rotated to drive the guide part to quickly move downwards and push the medicine container; the upper needle point of the medicating dual needle punctures a sealing plug on the medicine container, and the lower needle point of the medicating dual needle punctures the diaphragm in the interface, so that the medicine container is instantly communicated with the interior of the transfusion container; and the whole process is in a germfree butting state, so that germfree sealing is realized in the whole process of transportation, storage, butting, medicine mixing and transfusion.

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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