The invention belongs to the technical field of
medical instruments and discloses a primary-secondary type medical semiautomatic drainage metering device which comprises a box, a
liquid storage bag, a box liquid drain valve, a drainage mechanism and a
liquid storage bag liquid drain valve. A partition overflow port is formed on the upper portion of a box cavity partition which is arranged in a box cavity, a box cover is fixed on the upper portion of the box, an air film is arranged in a deflating hole which is arranged at the left end of the box cover, a drainage liquid guide-in port is arranged at the right end of the box cover in a matched manner, large-capacity metering scale marks and precise metering scale marks are arranged on one side of the box, a
liquid storage bag adapting port is fixed on the upper portion on one side the liquid storage bag, liquid storage bag scale marks are arranged on one side and along the height direction of the liquid storage bag, the box liquid drain valve comprises a
valve seat, a valve sleeve, a spiral sleeve and a valve core, the drainage mechanism comprises a
catheter and a transition connector, and the liquid storage bag liquid drain valve is adapted with the middle of the bottom of the liquid storage bag. The primary-secondary type medical semiautomatic drainage metering device has the advantages that cost is reduced and expense burden of the
medical instruments is reduced for patients, process metering and result metering can be performed simultaneously, intensity is improved, immediate sampling is facilitated, and attending intensity is reduced.