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 guide sleeve I, a rotary sleeve and a push rod, wherein the double medicine-charging needles are arranged in the medicine-charging barrel, the guide sleeve I is arranged between the medicine-charging barrel and the rotary sleeve, one end of the rotary sleeve forms a sealing connection with one end of the medicine-charging barrel, and the guide sleeve I forms axial fixed fit with the rotary sleeve; and the push rod is arranged along the axial direction of the guide sleeve I and driven by the rotary sleeve to move along the axial direction of the guide sleeve I. 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 and the rotary sleeve with a sealed end part, 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 a connector, so that the medicine container is instantaneously communicated 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 medicine adding instrument used when mixing medicine. Background technique [0002] In order to add the medicine in the medicine container to the solution in the infusion container (ie, the infusion soft bag or the infusion bottle), and then the mixed solution is injected into the patient in a clinical institution such as a hospital. In the prior art, a dosing instrument is often used to connect the medicine container with the infusion soft bag or the infusion soft bottle. [0003] The medical dosing instrument in the prior art mainly includes a dosing cylinder and a dosing double needle. The dosing cylinder forms a cup-shaped structure. The dosing double needles are stuck in the dosing cylinder through the double needle support seat in order to seal the mixing channel , A diaphragm is provided on the cross section of the bottom inner wall of the dosing cylinder, and a sealing film is provided on ...

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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