Abstract: A visual signaling device and a method for visual signaling between members of a motorcycling group. The device includes a housing that can be mounted to a handle of a motorcycle. The device includes a plurality of lights of distinct colors, wherein each color is associated with a signal. The devices in the group can be synced with each other. The lights can be turned on by respective buttons also provided in the housing.

Abstract: A composition includes a plurality of stabilized crosslinked nanobubbles, each nanobubble having a membrane that defines at least one internal void, which includes at least one gas, the membrane including at least one lipid, at least one nonionic triblock copolymer that is effective to control the size of the nanobubble without compromising in vitro and in vivo echogenicity of the nanobubble, and an interpenetrating crosslinked biodegradable polymer.

Abstract: A resilient compressive surgical retractor securing device with capture assembly includes a compressive securing device that compressively joins the resilient compressive surgical retractor securing device with capture assembly to a surgical accessory bar of a halo style head fixation device and a capture assembly that releasably retains the elasticized band of a scalp hook retractor. The compressive securing device is formed with an arm that is configured to form a neck for receiving the surgical accessory bar or other external support between the arm and the compressive securing device. The arm may be resilient or non-resilient, and may employ releasable closures to close the neck. The capture assembly may include a pivotable cam that releasably retains the elasticized band of a scalp hook retractor by compressing the band between the cam and the surgical accessory bar or other external support.

Abstract: A system for dispensing irrigation fluids, including a hand operated dispensing unit connected through a continuous length of multi-tube conduit to a mobile reservoir cart. The dispensing unit is constructed of disposable materials. The conduit system is uninterrupted to provide a sealed delivery of the irrigating fluids to the dispensing unit. Flow control is through a trigger mechanism on the handheld unit, as well as a plurality of individual on/off valves. A variety of nozzles are provided including devices for flushing and/or debriding. The reservoir unit includes disposable containers for the variety of irrigation fluids that are positioned in place and connected to the tubing conduit that extends to the handheld unit. A fluid heating unit may optionally be incorporated. Rotary tube pumps provide a nearly continuous flow of fluid and are capable of continuous operation even with back pressure due to flow stoppage at the handheld unit.