If you have been diagnosed with a joint infection after surgery, you could have a claim which would allow you to sue the manufacturer of the Bair Hugger device. Generally, manufacturers are liable for all the harm caused by their defectively designed products. In this case, there is strong evidence that Bair Hugger was defectively designed, in such a way that causes joint infections, a serious surgical complication.
You would only be able to sue the manufacturer if the Bair Hugger product was actually used in the surgery that caused you to contract an infection. Bair Hugger warming blankets are frequently used, even to this day, so chances are fairly high that if you had orthopedic surgery in the last ten years, a Bair Hugger forced-air warming blanket was used.