Tourniquet device convenient to tension

The invention discloses a tourniquet device convenient to tension. The tourniquet device comprises a tourniquet which is in a ring shape; and a tension device is arranged at any position of the tourniquet, and the tourniquet is fixedly mounted on the outer wall of the tension device. According to the tourniquet device, by arranging an air bag, a switch cover is pressed to drive a fixed rod to movedownwards, thus an igniter ignites gunpowder, high-pressure gas generated after gunpowder explosion enters the air bag through a vent hole, thus the air bag rapidly expands, and due to the fact thatthe air bag is fixedly connected with a rope, when the air bag rapidly expands in an air bag chamber and moves outwards, the rope is also driven to move outwards, and therefore the tourniquet is tensioned to stop bleeding. 本发明公开了一种便于拉紧的止血带装置，包括止血带，所述止血带呈环状，所述止血带任意位置设有拉紧装置，所述止血带固定安装在拉紧装置外壁。本发明通过设置气囊，按压开关盖带动固定杆向下运动，使点火器对火药点火，火药爆炸后产生的高压气体通过通气孔进入气囊，使得气囊迅速膨胀，因气囊与绳索固定连接，当气囊在气囊室内部迅速膨胀向外运动时，也带动绳索向外运动，从而拉紧止血带，进行止血。