| 摘要 |
Negative-pressure regulator device used to regulate blood-extraction fluid for preventing obstruction and/or rupture of the vein. This device should be placed between the needle inserted into the vein and the negative-pressure tube such that the health professional is able to regulate the necessary extraction fluid in accordance with the user's characteristics. In the event of a user with a narrow vein and/or low blood flow, this negative-pressure regulator system will facilitate extraction without injury to the patient.
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