APPARATUS FOR DRILLING TISSUE

摘要

PURPOSE: To provide a tissue piercing instrument reducing the danger of damaging blood vessels and tissue and improved in the optical control of piercing. CONSTITUTION: In a tissue piercing instrument equipped with a hollow shaft, a pointed end 12 forms a conical window 34. An optical lens equipped with an illuminating device for the pointed end 12 is passed through the hollow cylindrical shaft 10 and reaches the clearance of a main spindle behind the apex of the pointed end. Therefore, the instrument can be made to pierce while viewing the piercing part. Thus the piercing of the pointed end 12 over an entire jacket surface can be observed. Preferably with a second optical lens 42 at the apex of the pointed end 12, an area in front of the pointed end 12 can be directly observed better.