Push device used on short-travel precession preassembly medicating instrument

Abstract

The invention discloses a push device used on a short-travel precession preassembly medicating instrument. The push device comprises a medicating barrel, a rotating sleeve and a guide part, wherein a guide helical slot is formed on the inner wall of the medicating barrel; the rotating sleeve extends into the medicating barrel, is fixed together with the medicating barrel in the axial direction and matched with the medicating barrel in a sealed rotatable manner in the radial direction; a guide through slot is formed on the side wall of the rotating sleeve along the axial direction; the guide part is arranged in the rotating sleeve; and a guide block is arranged on the outer wall of the guide part, passes through the guide through slot and extends into the guide helical slot. During use, due to a diaphragm in an interface and the rotating sleeve, a medicine container and a medicating dual needle are in a 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 therefore, 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 dosing instrument used for mixing medicines. 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...

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