One-Handed and Automatic Tourniquets

A safe and effective combat tourniquet should possess the following properties as learned from these studies and experiences shared by the US Army medical personnel 

The above conditions were satisfied with a ratchet-buckle and single flexible 1.5 inch strap. The force capable of being applied through the lever-ratchet mechanism provided more than enough force from thumb or fingers to tourniquet any size limb. The strap was stressed so that it formed a bow shape in the center and formed the favorable round shape that is preferable for decreasing strain on tissue and nerves. The ratchet-buckle consisted of spikes to penetrate a fiber-woven belt that was very successful in defeating mud, sand, and blood, example shown in Fig. 1.3. 

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The one-hand and automatic tourniquets described in this section represent an innovation over the traditional battlefield devices presently employed. A one-hand operated combat tourniquet (see Figs. 5.24-5.36) has been designed and fabricated... 

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