All-sealing screw-in preassembly-type medicine feeder

Abstract

The invention discloses an all-sealing screw-in preassembly-type medicine feeder which comprises a medicine feeding cylinder, a medicine feeding crosspointer, a guide sleeve, a rotation sleeve and a pushing rod. The guide sleeve and the medicine feeding cylinder are in sealing joint, a guide spiral groove is arranged on the inner wall of the guide sleeve, one end of the rotation sleeve stretches into the guide sleeve, and the other end of the rotation sleeve is a sealing end. A guide through groove is arranged on the lateral wall of the rotation sleeve along the axial direction, the pushing rod is arranged in the rotation sleeve along the axial direction, and a guide block which penetrates through the guide through groove and stretches into the guide spiral groove is arranged on the pushing rod. When the all-sealing screw-in preassembly-type medicine feeder is used, a medicine container and the medicine feeding crosspointer are kept in a sealing state through a separation film and therotation sleeve and achieve absolutely sterile of transportation and storage. The rotation sleeve is rotated to drive the pushing rod to rapidly move downwards along the guide spiral groove, an upperneedle tip of the medicine feeding crosspointer pierces a sealing plug on the medicine container, a lower needle tip of the medicine feeding crosspointer pierces the separation film in a connector toenable the medicine container and a transfusion container to be communicated in the twinkling of an eye, and sterile sealing of the whole process of transportation, storage, joint, medicine mixing and transfusion is achieved.

Description

technical field [0001] The invention relates to a medical device, in particular to a dosing device 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 feeder is often used to connect the drug container with the infusion soft bag or infusion soft bottle. [0003] The dosing device in the prior art mainly includes a dosing cartridge and a double needle for dosing. 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 mixing 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 the double needle ...

AI Technical Summary

Problems solved by technology

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

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

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