| 摘要 |
A part attachable to a bladed surgical instrument comprises a guard (26) which lies adjacent the blade (20) and controls the depth to which the blade may enter tissue. The part may be attachable to the blade or to a handle of the instrument, and may include means enabling adjustment of the position of the guard relative to the blade. The spacing of the guard and blade may be adjustable as may the relative heights thereof. The part may be provided with a clip (22) allowing it to be attached to the handle at various positions along the handle -the clip being formed integrally with an extending arm which carries the guard. The guard may be a single element carried to one or other side of the blade or be two elements respectively lying on either side of the blade. Resectors are also described having a blade the angle of which relative to the handle may be varied and having a curved or curvable handle including optical fibres allowing light to be carried to the blade and a view of tissue being cut by the blade to be seen by a user. |
