Tourniquet device

A tourniquet device, comprising:

• a tourniquet base, having a base window portion, a first side portion, and a second side portion;
• wherein the first side portion and the second side portion are disposed on both sides of the base window portion;
• a driving shaft, having a shaft body, a first assembling portion, and a second assembling portion;
• wherein the first assembling portion and the second assembling portion are disposed on both ends of the shaft body;
• wherein the shaft body has a strap groove and penetrates the first side portion and the second side portion, the first assembling portion and the second assembling portion are respectively exposed on an outer surface of the first side portion and the second side portion;
• a strap, having a fixed end and a free end on both ends;
• wherein the fixed end is fixed to the base window portion, the free end is wound to form an adjustable annular space and penetrates into the tourniquet base through the base window portion, and the free end is then wound into the strap groove of the driving shaft and is rotatably linked to the driving shaft;
• a crank, having one end assembled to the first assembling portion of the driving shaft;
• and
• a gear locking assembly, having a gear member and a pivot member;
• wherein the gear member is assembled to the second assembling portion, one end of the pivot member is pivotally assembled to the second side portion, and the other end of the pivot member is mutually meshed with the gear member;
• wherein rotating the crank drives the driving shaft to rotate synchronously, so that the annular space of the strap is tightened.