| abstract |
(57) [Summary] [Object] An object of the present invention is to provide a surgical cutting instrument capable of solving the drawbacks of the prior art. A surgical cutting instrument of the present invention includes an elongate outer tubular member having a tip, an inner diameter, and an opening in the tip for receiving anatomical tissue, and disposed within the outer tubular member. An elongated inner tubular member having a tip, an outer diameter, and a cutting surface on the tip for cutting tissue in cooperation with the opening, the cutting surface engaging tissue through the opening. In order to position the cutting edge surface so that the inner tubular member and the outer tubular member can be moved relative to each other, it has a means for attaching both tubular members so that the inner diameter and the outer diameter can be made substantially the same. , One of the inner and outer tubular members is made of a galling resistant material forming a bearing surface along substantially the entire length of the surgical cutting instrument. |