초록 ▼

A surgical cutting instrument comprising an outer tube having a peripheral wall and a longitudinal axis. The outer tube has a plurality of openings arranged generally longitudinally along the outer tube. Each of the openings has first and second cutting edges defining portions of the periphery of su

A surgical cutting instrument comprising an outer tube having a peripheral wall and a longitudinal axis. The outer tube has a plurality of openings arranged generally longitudinally along the outer tube. Each of the openings has first and second cutting edges defining portions of the periphery of such openings. An inner cutting member is rotatable within the outer tube. The inner cutting member has at least one cutting edge cooperable with the first and second cutting edges of the openings of the outer tube for cutting material from within the patient with a shearing action.

대표청구항 ▼

A surgical cutting instrument comprising: an outer tube sized for insertion through an opening in a patient, said outer tube having a generally cylindrical peripheral wall and an outside diameter; said outer tube having a plurality of openings arranged generally longitudinally along the outer tube i

A surgical cutting instrument comprising: an outer tube sized for insertion through an opening in a patient, said outer tube having a generally cylindrical peripheral wall and an outside diameter; said outer tube having a plurality of openings arranged generally longitudinally along the outer tube including distal and proximal openings; each of said openings having a cutting edge defining at least a portion of the periphery of such opening; the ratio of the length of the periphery of each of said openings to said diameter of the outer tube is at least 1.5 to 1; an inner cutting member rotatable within said outer tube; and said inner cutting member having a cutting edge cooperable with said cutting edges of the openings of the outer tube for cutting material from within the patient with a shearing action that progresses along both said cutting edges as the inner cutting member rotates.