Abstract: A surgical blade includes an elongate outer tubular member, an elongate inner movably received within the outer member, and a polymer coating disposed on a portion of the outer surface of the inner member, the inner surface of the outer member, of both. The inner member has a distal cutter positionable adjacent a distal opening in the outer member. A method of cutting tissue, e.g., hard tissue such as bone, includes providing a surgical blade having an inner member and/or an outer member coated with a polymer, placing the surgical blade against the tissue, and driving the inner member to cut the tissue.

Abstract: A toilet training system and method which includes a plurality of sheets with patterns adapted to dissolve when contacted with urine, at least one chart for recording the child's use of a toilet, instruction for positioning one of the sheets in the toilet such that the patterned sheet is contacted by the child's urine and therefore dissolves, and instructions for recording the child's toilet training progress on the provided chart. Optionally receiving means are positioned in the toilet to hold the sheet out of the water and in line with the child's urine stream. The sheet is preferably formed of carboxymethyl cellulose and sized to dissolve when contacted with 30 cc of urine. In the preferred embodiment this toilet training system and associated method of encouraging child to use the toilet is in a booklet form.