Configuration needle with air pressure balancing function and configuration device

Abstract

The invention discloses a configuration needle with an air pressure balancing function and a configuration device. The configuration needle comprises a needle tip and a needle stand. The needle head is internally provided with double chamber channels for ventilating and liquid passing. The ventilating channel is internally provided with an upper hole which is next to the needle tip part, and a lower hole which is close to the needle stand part. The liquid passing channel is internally provided with a liquid passing hole. The connecting position between the needle stand and the needle tip is provided with a needle stand interface which corresponds with the lower hole, thereby communicating the ventilating channel with outside through the needle stand interface. According to the configuration needle with the air pressure balancing function, through arranging the ventilating channel and the liquid passing channel which are isolated from each other, forming of the positive air pressure andthe negative air pressure can be prevented, and a medicament configuration operation rate and reliability are improved.

Description

[0001] This application claims the priority of the Chinese patent application filed on May 26, 2017, with the application number of 201720601617.8 and the utility model titled "A configuration needle and configuration device with air pressure balance function". The entire contents of this application are incorporated by reference. technical field [0002] The invention relates to the technical field of medical devices, in particular to a configuration needle and a configuration device with an air pressure balance function. Background technique [0003] At present, when using a drug in a sealed container, such as a vial for liquid dispensing, the configuration needle used is a general single-chamber / single-hole structure. When such a single-chamber / single-hole needle structure injects a solvent into a sealed container (such as a vial), a positive pressure will be generated in the sealed container, which will hinder the smooth injection of the solvent, and at the same time, th...

AI Technical Summary

Problems solved by technology

When such a single-chamber / single-hole needle structure injects a solvent into a sealed container (such as a vial), a positive pressure will be generated in the sealed container, which will hinder the smooth injection of the solvent, and at the same time, there will be liquid / aerosol when the needle is pulled out. Splashing will cause harm to the operator and the people in this space

In addition, when using a single-lumen / single-hole needle to extract the dissolved medicinal solution from the sealed container, negative pressure will be generated in the sealed container, making it difficult to extract the medicinal solution and reducing work efficiency

Therefore, the inventor found that the prior art has at least the following defects in the process of realizing the application: the currently used configuration needle is easy to hinder the injection or extraction operation due to positive or negative pressure when extracting or injecting the medicine in the sealed container, and even May cause harm to relevant personnel and cause waste of liquid medicine

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