Surgery – Instruments – Cutting – puncturing or piercing
Patent
1998-05-08
1999-07-13
Thaler, Michael H.
Surgery
Instruments
Cutting, puncturing or piercing
606180, 2853815, 285908, 403273, 403270, 464 88, 464181, 464903, 156293, 156 85, 1563096, A61B 1732
Patent
active
059220031
ABSTRACT:
The present invention is generally characterized in an angled rotary tissue cutting instrument including an outer blade assembly, having a rigid tubular member with proximal and distal portions connected by a bend, and an inner blade assembly rotatably disposed within the outer blade assembly and including a tubular drive shaft at a proximal end, a cutting tip at a distal end, and a flexible coupling disposed between the drive shaft and the cutting tip. The drive shaft and cutting tip include neck portions which are disposed telescopically within proximal and distal ends of the coupling. The flexible coupling is formed of a flexible polymeric material, and each of the neck portions includes a lateral opening defining a predetermined flow path for the polymeric material during fabrication so that the flexible polymeric coupling includes flow portions extending into the openings in the neck portions of the drive shaft and the cutting tip to form permanent, interlocking mechanical joints therewith capable of receiving and transmitting torque.
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"Linvatec Flexes Ability With ENT Shavers," article by Troy Cozad, 1 page, published 1994 or prior thereto.
Anctil Stephanie B.
Peters Gary
Thaler Michael H.
Xomed Surgical Products, Inc.
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