Screw-in pre-installed type medicine-charging instrument

Abstract

The invention discloses a screw-in pre-installed type medicine-charging instrument, comprising a medicine-charging barrel, double medicine-charging needles, a rotary sleeve and a push rod, wherein a guide spiral groove is arranged on the inner wall of the top of the medicine-charging barrel; one end of the rotary sleeve stretches in the medicine-charging barrel, and the other end of the rotary sleeve is a sealed end; and a guide through groove is arranged on the sidewall of the rotary sleeve along an axial direction, the push rod is arranged in the rotary sleeve along the axial direction, anda guide block penetrating through the guide through groove and stretching in the guide spiral groove is arranged on the push rod. When the screw-in pre-installed type medicine-charging instrument is used, a medicine container and the double medicine-charging needles are in a sealed state via a diaphragm in a connector and the rotary sleeve with a sealed top end, so that absolutely sterile transport and storage can be achieved. The rotary sleeve is rotated to drive the push rod to rapidly move downwards along the guide spiral groove, so as to push the medicine container, and the upper needle points of the double medicine-charging needles puncture a sealing plug on the medicine container, the lower needle points of the double medicine-charging needles puncture the diaphragm in the connector, so that the medicine container is instantaneously connected with the interior of a transfusion container, and the whole process is in a sterile butt-joint; and therefore, whole-course sterile sealing for transport, storage, butt-joint, medicine mixing and transfusion can be realized.

Description

technical field [0001] The invention relates to a medical device, in particular to a dosing instrument 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 of the cartridge, one tip of ...

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. "

Images