Instrument for the fusion and cutting of blood vessels

摘要

An instrument suitable for minimal invasive surgery. The instrument can be introduced into a body, for example, through a trocar, and has two arms and a centrally guided knife for clamping vessels. The central guidance of the knife in at least one of the arms avoids disadvantages that could otherwise develop as a result of the off-center severing of coagulated tissue. Moreover, the clean central guidance of the knife results in lower wear on the knife. Thus, a better cut quality and a longer service life of the knife can be achieved.

主权项

1. An instrument for the fusion and cutting of vessels, said instrument comprising:
a first arm having an electrically isolating base body with a groove-like recess and a guide slot, wherein retaining means are formed on the base body for the fixed-position mounting of an electrode having a curved shape, and wherein the retaining means are formed by electrically isolating projections that project inwards in a direction of the groove-like recess and beyond an upper edge of the electrode thereby covering the upper edge of the electrode; a second arm movably mounted on the base body such that the second arm can move towards and away from the electrode, the second arm having a longitudinal slot; and a knife arranged in the guide slot of the base body such that the knife is longitudinally movable and arranged projecting into the longitudinal slot or movable into the longitudinal slot.