Abstract: The present invention provides an apparatus and a method for modifying a structure such as a medical device through the selective application of a coating. A coating sleeve may comprise an elastomeric wall that may be permeable or impermeable to a coating material and may be porous so as to allow for patterned coating of the device. The coating sleeve may contain surface protrusions that facilitate manipulation by providing sites for grasping and pulling. In operation the coating sleeve may be fitted on the device prior to application of a coating and removed subsequent to application of the coating.

Abstract: The present invention provides an apparatus and a method for modifying a structure such as a medical device through the selective application of a coating. A coating sleeve may comprise an elastomeric wall that may be permeable or impermeable to a coating material and may be porous so as to allow for patterned coating of the device. The coating sleeve may contain surface protrusions that facilitate manipulation by providing sites for grasping and pulling. In operation the coating sleeve may be fitted on the device prior to application of a coating and removed subsequent to application of the coating.

Abstract: A small, light weight watercraft that can be used and enjoyed in substantially the same manner as a conventional kayak, but one that includes a novel auxiliary power system for propelling the watercraft through the water. The auxiliary power system comprises a four-stroke, overhead-valve, single-cylinder engine that is of the character typically used to drive the cutting line head of a conventional line trimmer device. In one form of the invention, the speed of the engine can be controlled by a hand-operated throttle mounted on the kayak paddle. The conventional kayak has been modified by installing at the stem of the kayak an elongated, tubular-shaped duct having a water inlet port and by mounting within the hull of the kayak the engine system that includes a drive shaft that extends through the hull and into the tubular shaped duct to impart rotation to a propeller that is mounted on the drive shaft for controlled rotation within the tubular shaped duct.