A device for connecting or disconnecting cannula to or from a tube. The connection is uncomplicted, quick, safe and provides reproducible conditions in a surgical procedure for connecting to a blood pump that assists the heart or replaces the heart. A nipple (4) is formed on the tube (5) which is inserted into the cannula (7). A rotatable claw ring (1), which is arranged on a cannula end (71) for displacement to a stop (2, 62), can be rotatably joined with a locking ring (3) which is secured to a tube end (51) by axial movement and latching engagement with the locking ring (3). The connection is releasable by rotating the claw ring (1) and pulling the claw ring (1) and the cannula apart in an axial direction.

 
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> Cristalline and amorphous form of a triazolo (4,5-D) pyridimine compound

~ 00396