Project Description

Combat Application Tourniquet (CAT)

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Combat Application Tourniquet is also called C-A-T tourniquet. A tourniquet Is the first choice in combat for external hemorrhage from extremity wounds. 

√ 90% of combat fatalities occur forward of a medical treatment facility.

√ 75% of combat fatalities have a nonsurvivable injury

√ 25% have a potentially survivable injury. Of those with potentially survivable wounds, 90% die from hemorrhage.

CAT tourniquet is used to control venous and arterial circulation to an extremity for a period of time. A hook and loop windlass retention strap was applied, securing the windlass to maintain pressure during casualty evacuation. This pressure is transferred to the vessel wall causing a temporary occlusion.100% effective in blocking blood flow in upper and lower limbs.

Combat Application Tourniquet (C-A-T) should be carried by every soldier. Tourniquets are appropriate in combat because direct pressure is hard to maintain during casualty transport under fire.

Damage is rare if the tourniquet is left in place for less than 2 hours. Tourniquets are often left in place for several hours during surgical procedures. It is better to accept the small risk of damage to the limb than to watch a casualty bleed to death. Both you and the casualty are in grave danger while a tourniquet is being applied during this phase, and non-life-threatening bleeding should be ignored until the Tactical Field Care phase.

A soldier was saved when his battle buddies applied two effective improvised tourniquets to his legs, saving his life.

The need for immediate access to a tourniquet in such situations makes it clear that all soldiers on combat missions should have a suitable tourniquet readily available at a standard location on their battle gear and be trained in its use.

Combat application tourniquet (CAT tourniquet) for battlefield first aid/tourniquets with twisted rods / rotating tourniquets

Tourniquets are a front-line tool to stop life-threatening bleeding. Tourniquets are simple to use but it is still crucial to integrate training to use them in CPR and First Aid training.

Specification: 3.8 x 89 cm

Shelf life: 3 years

Technical Data:

√ Self-adhesive tape withstands 500N of pulling force without breaking.

Friction belt buckle and nylon belt connection: withstand 300N of tension without breaking.

√ Self-adhesive tape, c-clip fastening clip of Velcro peel strength>1.6N/cm.

√ C-type buckle clip and nylon belt body connection: withstand 50N static tension 15s, c-type buckle clip and nylon belt body should not separate, or fall off.

√ Rotating rod: withstands 300N of pulling force without breakage.

Stop any life-threatening hemorrhage with a combat application tourniquet (CAT) or hemostatic dressing, if applicable.

Tourniquet Applicaiton Step 1

Apply the tourniquet band above the bleeding wound.

Tourniquet Applicaiton Step 2

Adjust the friction adaptor buckle until the combat application tourniquet(C-A-T) is securely in place.

Tourniquet Applicaiton Step 3

Twist the windlass rod to provide direct pressure to the extremity; twist until the bleeding stops

Tourniquet Applicaiton Step 4

Lock the windlass rod in place with the clip 

For nonextremity wounds, the use of direct pressure with a hemostatic dressing is appropriate to control life-threatening hemorrhage.  Severe bleeding may occur with neck, axillary, or groin injuries. For these injuries, it may not be possible to effectively apply a tourniquet. Use of direct pressure and a hemostatic dressing may be required.