Abstract: Provided is an endoscopic vessel harvesting system comprising a direct current (DC) power control system connected to a therapeutic tool comprising a heating element. The DC power control system may include an input connection to receive power from a power supply. A first power control circuit may supply constant output power during a first time interval to heat the heating element to a target temperature. A second power control circuit may supply pulsed output power during a second time interval to maintain a temperature of the heating element within a target temperature range. An output connection may receive the output power and may supply controlled power to the heating element by supplying the constant output power during the first time interval, the pulsed output power during the second time interval, followed by a third time interval during which no power is supplied. Methods and systems are also disclosed.

Abstract: The transportation tarp assembly includes a panel that is positionable on a support surface. An object is positionable upon the panel. A belt is provided. The belt is worn by a user. A clip is operationally coupled to the belt. A rope is coupled between the clip and the panel. The user tows the objects on the panel. Once the user arrives at the intended destination, a selected rope is disconnected, and the user walks forward in order for the tarp to flip over thereby dumping the objects at the intended destination.