The Cold Rush Cold Therapy System by Össur is a mechanical circulation cold therapy device that reduces localized pain and swelling after surgery or trauma. A circulation pump moves a chilled water-and-ice mixture through a closed-loop hydraulic circuit to a cold therapy pad, delivering steady, consistent cooling to the treated joint or limb. Built with a brushless motor for quiet operation, a locking lid, and insulated reservoir walls, the unit runs on a safe, low-voltage 12V power supply and is intended for single-patient use. How It Works Cold Rush circulates cooled water from the ice-and-water reservoir through insulated hoses to the pad placed over the treatment area. According to the manufacturer, the motor supports steady flow and consistent pad temperature, similar to designs used in larger mobile cooling equipment. An adjustable flow control knob lets the patient or caregiver set the temperature within the range prescribed by their physician. Features Circulating cold therapy pump with adjustable flow control knob Brushless motor for quiet operation, per the manufacturer Insulated reservoir walls and locking lid to reduce spills and maintain cooling Compact and lightweight at 4.6 lbs (2.1 kg) Low-voltage 12V external power supply Compatible only with Össur Cold Rush Pads (sold separately) Indications Provides cold therapy For conditions requiring cold therapy to a joint or limb, such as post-surgical care, trauma-related pain, and swelling Contraindications Do not use on patients with: Hematological dyscrasias predisposing to thrombosis (e.g., cryoglobulinemia, sickle cell disease) Compromised local circulation (arteriosclerosis, ischemia) Neurologic impairment, polyneuropathy, or nerve damage causing decreased skin sensitivity Cognitive or communication impairments preventing accurate, timely feedback Raynaud's disease or other vasospastic conditions Buerger's disease or significant vascular impairment Cold hypersensitivity (cold urticaria) or history of cold-related injury Severe cardiovascular disease, hypercoagulation disorders, poor circulation, or extremely low blood pressure Localized unstable skin conditions or infection in the treatment area Tissue inflammation from recent injury or chronic inflammatory flare-up Specifications Device Weight 4.6 lbs (2.1 kg) Power Input Voltage 100–240V, 50/60 Hz Power Output 12V, 0.4A (4.8W) or 12V, 0.5A (6W), depending on adapter model supplied Ingress Protection Rating IP21 Equipment Class Class II, indoor use only Operating Temperature 50°F to 104°F (10°C to 40°C) Operating Humidity 30%–75% Relative Humidity Shipping/Storage Temperature -4°F to 140°F (-20°C to 60°C) Retail Box Size 11.8 x 15.7 x 9.4 in (30 x 40 x 24 cm) Shipping Weight 6.8 lb (3.1 kg) Care Instructions Drain all water from the unit after each use Before prolonged storage, circulate water with 2 tbsp liquid bleach or 3 oz (88 ml) of 3% hydrogen peroxide on MAX for 5 minutes, then drain Store in a cool, dark place with the lid slightly open; avoid sun exposure and extreme heat Flush with clean water before reuse; inspect hoses and pad for damage before each use Optional Accessories Cold Rush Pads are required for use and sold separately. Pad Sizing Pad & Part # Video Link L x W Straps / Hose Length Knee B-232002000 Watch Video 14.5” x 12” Two (2) Straps: 17.75” EachHose: 5” Small Shoulder B-232002202 Watch Video 15” x 13.25” x 9” 31”, 11”, and 10.75” StrapsHose: 18” Large Shoulder B-232002204 Watch Video 17.5” x 15.75” x 11.5” 41.5”, 18”, and 10” StrapsHose: 16” Universal B-232002300 Watch Video 12” x 12” 42” and 18” StrapsHose: 16” Rectangular B-232002402 Watch Video 10.25” x 5.5” 30.75” and 10.75” StrapsHose: 5” Lumbar B-232002404 Watch Video 10.75” x 9” One (1) Strap: 41”Hose: 16” Ankle B-232002500 Watch Video 17.75” x 12.25” N/A , Hose: 5" Left Hip B-232602100 Watch Video 11” x 18.5” 42” and 18” StrapsHose: 7” Right Hip B-232502100 Watch Video 11” x 18.5” 42” and 18” StrapsHose: 7” Add Your Cold Rush PadThis unit ships without a pad. Select your pad above to complete your setup — each pad is contoured to the treatment area for a secure, comfortable fit. Available in Knee, Shoulder (Large), Shoulder (Small), Universal, Foot and Ankle, Hip (Left), Hip (Right), Lumbar, and Rectangular. Not sure which pad fits your treatment area? See pad details and photos. Package Includes 1 x Cold Rush Cold Therapy Unit 1 x Hose with couplings 1 x 12V power supply Resources Instructions for Use (PDF)