The surgical instrument includes an element connectable with the fixture. The first member includes a component that is movable independently and selectively relative to the element and that is engageable with tissue in a substantially posterior portion of the incision relative to the body. The second member includes a part that is movable independently and selectively relative to the element and that is engageable with tissue in a substantially anterior portion of the incision relative to the body. The third member includes a component that is movable independently and selectively relative to the element and that is engageable with tissue in a substantially cranial portion of the incision relative to the body. Systems and methods are disclosed. [Selection] Figure 1手術器具は、固定具と接続可能な要素を備える。第１の部材は、要素に対して独立しておよび選択的に移動可能であり、身体に対して切開部の実質的に後側の部分の組織と係合可能な部品を含む。第２の部材は、要素に対して独立しておよび選択的に移動可能であり、身体に対して切開部の実質的に前側の部分の組織と係合可能な部品を含む。第３の部材は、要素に対して独立しておよび選択的に移動可能であり、身体に対して切開部の実質的に頭側の部分の組織と係合可能な部品を含む。システムおよび方法が開示される。【選択図】図１
