| 摘要 |
<p>A stapling element is provided, operative to pierce and penetrate a tissue by a first end, and close around the tissue. The staple is adapted for joining tissue of diverse geometries, for example, joining edge to edge, joining two or more layers together, and joining a mesh, or a patch to the tissue. Three factors help prevent local necrosis: 1. The self-closing feature of the staple does not lead to tissue crushing. 2. Edge seams are applied generally perpendicular to the tissue edge, allowing for blood supply to the tissue edge. 3. Excess tissue is cut off at the seam, minimizing the amount of tissue that may undergo local necrosis. A physical feature prevents the staple from rotating, when in an application shaft, to maintain a predetermined closing direction. The application devices provide ergonomic means for staple application in difficult-to-reach places. In addition, they provide standardization, so that the skilled and the less so may reach results of comparable quality, and the effects of fatigue and loss of patience will be minimized. The wide variety of stapling elements, which come in different sizes and shapes, and the wide variety of devices that are disclosed provide solutions to many surgical problems, for open and minimally invasive surgeries. The stapling element may be formed of an alloy, a pure metal, a polymer, or a composite of at least two materials. Additionally, staplers, anastomosis devices, and methods for their applications are described.</p> |
