DEVICE FOR DEGASSING AND SEALING OF VACUUM TUBES Russian patent published in 2016 - IPC B67B3/24 

FIELD: medicine.

SUBSTANCE: invention can be used in manufacturing of vacuum tubes for venous blood sampling for analysis. Device for degassing and sealing of vacuum tubes includes a vacuum chamber coaxial with a removable sleeve. Vacuum chamber comprises a cylindrical housing with a nozzle for air pumping, a bottom with a nipple for connection of a removable sleeve and a cover with a central nipple. Between the cover and the housing there is a fixed elastic membrane, in which a rod is coaxially mounted with the possibility of movement along the axis, in the lower part, the rod has a head located inside the chamber directly under the membrane, and there is a circular thrust in the upper part. There is a locking device for rob fixation in the upper part of the cover, a return spring is in the nipple between the cover of the chamber and the rob circular thrust. Removable sleeve is made with a bell in the lower part of which there is a sealing ring. There are quick-detachable connection elements on the exterior surface of the nipple of the chamber bottom and on the inner surface of the sleeve bell.

EFFECT: device has simple design and reduces the possibility of probable vacuum leakage.

1 cl, 1 dwg