Abstract: A deburring tool is constructed of a pair of wire sections resiliently interconnected with each other so that each biases the other against the internal side walls of a bore formed in a workpiece. Abrasive material is provided on either or both of the sections, and rotation of the tool about its longitudinal axis causes engagement of the abrasive material with the area of the bore wall at which burrs are to be removed. The tool can be formed of a single length of wire having a curved portion on which the abrasive material is located, or the tool can assume various other configurations. The single wire version can be used to remove burrs from the interior of very small bores.

Abstract: An elongate stylet slidably disposed within a thermoelectric insulative sheath has a forward-projecting surgically incisive tip for entry of the sheath into the peritoneal cavity. After the stylet is withdrawn, an elongate shaft having hook-shaped electrical resistance element extending forwardly therefrom is slidably inserted through the sheath and the resistance element engaged with a Fallopian tube. Subsequently, the sheath is moved forwardly to encase the resistance element in the doubled section of Fallopian tube engaged therewith. An electrical energy impulse from a controlled source thereof energizes the resistance element for concurrent electroresection and electrocoagulation of the Fallopian tube in an environment shielded from adjacent organs.