具有平行夹持和夹紧血管夹的手术器械，其配备有耦合元件，其可以结合已知的可拆卸操作装置和致动工具，以便保持胸部中的进入开口没有侵入性器械。 利用本发明的血管夹具的平行抓握和夹紧操作装置，已知的剪刀式装置被省去，并且通过根据本发明的杠杆装置进行操作装置的平行调节。 杠杆齿轮由构造为主体元件的固定杠杆和由张力和压力元件，推拉杆，两个拨动杆，两个枢转臂和两个可移动分支组成的几个可移动杠杆形成。 杠杆齿轮具有九个轴线并且转换线性驱动运动，用于将操作装置调节成可旋转的运动装置，由此两个可移动分支可基本上彼此平行地彼此移位并且彼此远离。

The present invention relates generally to the field of surgery. In the surgical field instruments are used to examine the inside of living organisms and / or to be used for surgical procedures. This includes surgical instruments for tying or otherwise compressing tubes, or hose-shaped parts of the body, preferably of blood vessels. The inventive surgical instrument relates to such a parallel summary and clamped hemostat, which is equipped with coupling elements, which allows a combination of a known releasable operating device and an operating tool in order to keep the access opening in the thorax of cumbersome equipment. In the parallel synthesis and clamping tools of the inventive hemostat is omitted the known scissors-like means, and there is a parallel adjustment of the working fluid by means of a lever mechanism according to the invention. The lever mechanism is of a fixed lever, designed as a body member and a plurality of movable levers, consisting of a tension and compression element, a push-train-bar, two toggle levers, two pivot arms and two movable branches formed. The lever mechanism has nine axes and converts a linear drive movement for the adjustment of the working medium in a rotatable order, whereby the two mobile sectors, are substantially parallel to each other and away from each displaced.