Retraction of one or more three-dimensional or planar amorphous objects is provided to gain access for a procedure where the retracted elements are easily damaged by application of normal forces. For example, a surgical instrument to provide access to an organ or tissue plane. Microtextured surfaces are provided that provide immobilization of amorphous objects, the immobilization of which is characterized by low normal forces and high shear or in plane forces. The retraction device is comprised of microstructured surfaces on one or more arms. Preferably these arms are soft and flexible to minimize damage to retracted objects. In some instances, these arms resemble and are used as a nonslip tape. Alternatively, parts or whole arms of the retraction device are rigid to provide a supportive aspect. These arms may be configured around a handle. Furthermore, the microtextured aspect may be further augmented with conventional gripping surfaces, such as a sticky surface, or a surface comprised of one or more hooks or barbs. The handle means may be distributed over the retraction device, for example, holes distributed along the arms through which anchoring means are tied. The retraction device is particularly well suited for grasping wet, oily, slimy or living surfaces by applying a small nondestructive normal force.一或多個三維度或平面的無固定形狀物體的退縮被提供，用以在被退縮的物體會因為法向力的施加而輕易地受損的時候獲得一處理程序的途徑。例如，一手術儀器提供對於一器官或組織平面的接近途徑。微織構型表面(microtextured surface)被提供，其提供無固定形狀物體的固定(immobilization)，該無固定形狀物體的固定的特徵在於低法向力及高剪力或平面內的力(in plane force)。該退縮裝置是由一或多個手臂上的微型結構表面所構成。較佳地，這些手臂很柔軟且可撓曲用以讓被退縮的物體的損傷減至最小。在一些例子中，這些手臂類似防滑膠帶且被用作為防滑膠帶。或者，該退縮裝置的一部分手臂或全部的手臂是剛硬的，用以提供支撐特性。這些手臂可被建構在一把手周圍。再者，該微織構型特徵可用傳統的抓握表面(譬如，黏性表面)或包含一或多個鉤或倒鉤的表面來進一步強化。該把手機構可被散布在該退縮裝置上，例如，沿著該等手臂被散布的孔，固定機構可穿過孔被繫緊。該退縮裝置特別適合藉由施加一小的非破壞性的法向力來抓握濕的、油的、分泌黏液的或活的表面。
