Patent ID: 8828036
Filing Date: 2014-09-09
Classification: A61B

Abstract:
1. A surgical instrument comprising: a first cutting blade having a tubular body with a proximal end and a distal end, a cutting window disposed at a first side of the first cutting blade, a suction aperture disposed at a second side of the first cutting blade; a second cutting blade having a tubular body with a proximal end and a distal end, a cutting window disposed at a side of the second cutting blade, the second cutting blade rotatably disposed inside of the first cutting blade such that the surgical instrument cuts tissue by rotating the second cutting blade within the first cutting blade while tissue is drawn into the cutting windows and severs the tissue by rotation of the second cutting blade; and a suction passage forming member disposed over the suction aperture of the first cutting blade, the suction passage forming member including an inlet, an outlet and a passage between the inlet and the outlet, the outlet communicating with the suction aperture, wherein the surgical instrument can be used as a suction tool by applying a vacuum through the internal bore of the second cutting blade while the second cutting blade is stopped from rotating with the cutting windows of the first and second cutting blades misaligned with each other so that the vacuum is applied through the suction aperture and the suction passage forming member.