Bilateral eye shield is used to protect the eye during or after surgery or trauma. The smooth edges need no protective cover. It is connected with elastic at nose. It has an adjustable hook/loop material for a comfortable fit.

Bilateral hip orthoses are useful for hip dysplasia, hip instability due to trauma, and post-operative support. The main objective of bilateral hip orthoses is to prevent the hip joints from subluxating (partial dislocation) or luxation (dislocation) while providing over all stability support for the legs.

Biliary stent is a plastic or metal tube, which is inserted into a bile duct to relieve narrowing of the duct. It is used to drain the bile from the obstructed biliary tree. It is also used to support a narrowed part of the bile duct and prevent the reformation of the stricture. The two most common methods that are used to place a biliary stent are endoscopic retrograde cholangiopancreatography and percutaneous transhepatic cholangiography.

Bilirubin is a yellow breakdown product of normal heme catabolism. Its levels are elevated in certain diseases and it is responsible for the yellow color of bruises and the brown color of feces. Bilirubin reduction in the gut leads to a product called urobilinogen, which is excreted in urine. It consists of an open chain of four pyrrole-like rings (tetrapyrrole).