instrument for fusion and cutting of blood vessels. The present invention relates to an instrument (10) which is preferably suitable for minimally invasive surgery, which can be introduced into a body, for example, through a trocar, has two arms (19, 20) and a centrally knife. guide (21) for vessel fixation. the central orientation of the knife in at least one of the arms (19, 20) avoids the disadvantages that could otherwise develop as a result of cutting off the center of the coagulated tissue. furthermore, the clean central orientation of the knife (21) results in less wear on the knife (21). The invention thus guarantees better cutting quality and longer knife life (21). one of the arms has a base body, preferably ceramic (23), at the upper ends of which the internally projecting projections (38, 39) is provided, which is in the form of a fillet. These electrically insulating protrusions extend toward the central plane (m) and provide two improvements: On the one hand, the electrode assembly (33) is substantially facilitated. On the other hand, two tissue fixation points are created. the projections may be designed such that when the arms (20, 19) are closed, the distance (a) between the electrode formed by the upper arm (20) and the electrode (33) at the point where the distance has it. its maximum width, and the two distances b between the protrusions 38, 39 and the arm 20, is the same or slightly smaller than the distance a. This has the advantage that during the coagulation process, in which the tissue volume falls within the coagulation region, the tissue is nevertheless firmly grasped. distance a preferably tapers from the projections (38, 39) to the guide slot (31). With the present instrument, the area of coagulation is determined by the insulation projections (38, 39) and is thus reliably reproducible. The quality of coagulation is substantially improved.instrumento para a fusão e corte dos vasos sanguíneos. a presente invenção refere-se a um instrument
