Abstract: Transient polymers and compositions comprising such polymers are described. The polymers are copolymers of phthalaldehyde and one or more additional aldehydes and can degrade/decompose upon exposure to a desired stimulus, like light, heat, sound, or chemical trigger. Films comprising the copolymers and devices comprising surfaces coated with the film are also described.

Abstract: A system and method is provided for monitoring and controlling the pressure inside of an orthosis or orthotic brace. The system can measure the pressure inside of the brace using a force sensor and then, using an air bladder placed between the outside wall of the orthotic brace and the body of the person wearing the brace, deflate or inflate the air bladder as required to maintain a constant pressure between the brace and the body.