| 摘要 |
This invention is a trephine device for preparing apertures through a flexible material, such as skin of a patient, including a base plate (36) having an upper surface, and an opposed lower surface, where the upper surface has at least one upwardly protruding skin deforming contoured surface (56). The base plate is adapted to be removably inserted into a pocket surgically prepared in tissue of the patient. The device can include a handle member (12) mounted on, and projecting upwardly from the upper surface of the base plate. A clamping member (100) is connected to the trephine device in overlying relationship to the upper surface of the base plate. The clamping member facilitates deformable, clamping, sandwiched engagement of the flexible material between the upper surface of the base plate, and the clamping member. When the base plate is inserted into the tissue pocket, the skin of the patient is engaged between the base plate, and the clamping member. The trephine device includes a cutter position relative to the handle member. The cutter is movable relative to the clamping member into cutting engagement with the flexible material deformably engaged by the clamping member to form an aperture having a cylindrical wall or a reverse tapered wall in the flexible material.
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