What are the uses of medical nitrogen gas and the standards for medical nitrogen gas

Medical nitrogen gas has multiple uses in the medical field. It is usually used to drive medical equipment and tools, such as nitrogen gas knives, nitrogen gas suction devices, etc. In addition, liquid nitrogen gas is commonly used in cryotherapy in surgery, dentistry, gynecology, and ophthalmology to treat vascular tumors, skin cancer, acne, hemorrhoids, rectal cancer, various polyps, cataracts, glaucoma, and artificial insemination.

Regarding the standards for medical nitrogen gas, the European Pharmacopoeia defines two types of nitrogen gas: "medical nitrogen gas" and "low oxygen nitrogen gas". The former is used for medical purposes, such as in hospitals; The latter can be used for inert protection of oxygen sensitive drugs. There is no clear parameter specification for the specific standards of medical nitrogen gas, such as moisture, oil content, or particle content. Usually, only a purity of 99.5% is required for low oxygen nitrogen gas, but the remaining 0.5% may contain moisture, oil content, etc., depending on the production, storage, and transportation conditions.



Medical nitrogen gas has a wide range of applications in the medical field, from driving medical equipment to being used for various medical purposes such as cryotherapy. Meanwhile, for the purity and quality standards of medical nitrogen gas, medical users need to define their own standards based on specific applications and product risks.