| 摘要 |
<p>This invention relates to a surgical instrument having a body (1) provided with an inlet opening (20) for a driving gas, and an opening (21) for the introduction of a physiological solution; a hollow small tube or cannula (23), which is provided at the front position with an opening (24) and is arranged in front of said body (1); a movable member (3) arranged inside said body (1) and movable alternately when driven by said driving gas and counteracted in its motion by counteracting means (4); and a cutting blade (12) which is hollow inside and is movable according to a motion integral with the motion of said movable member (3), whose front end is arranged inside said outer cannula (23) which is provided with a front opening (25) and is connected at the back to a suction system; wherein said outer cannula (23) is coupled at the front portion to said body (1) through removable coupling means (22), wherein said cutting blade (12) is inserted at the back of the body (1), and wherein a guide (11) is integrally coupled to said movable member (3), said guide being provided at the back part with second removable coupling means (14) which couple with corresponding coupling means (26) which are borne by said cutting blade (12) so as to allow the motion of the blade (12) to occur integrally with said movable member (3). <IMAGE></p> |
