Surgical cutting instrument

Surgery – Means for introducing or removing material from body for... – With means for cutting – scarifying – or vibrating tissue

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Details

606170, A61B 1720

Patent

active

059117010

ABSTRACT:
A surgical cutting instrument for cutting tissue includes a flexible outer tubular assembly or cannula sized for percutaneous insertion into an anatomical space, such as a joint space in the spine. The outer tubular assembly has a cutting opening at its angle-tipped distal end, and the proximal end is supported by a handpiece. A cutting member is slidablv disposed within the outer tubular assembly and includes a tubular cutting head portion defining an end opening and a cutting edge at the end opening. In one specific embodiment, the outer tubular assembly includes a flexible segment connected between two more rigid segments by means of locking grooves. The cutting member includes a flexible drive portion attached to the cutting head portion in order to permit the cutting head portion to flex relative to the remainder of the cutting member and relative to the outer tubular assembly. The flexible segment and drive portion allow the cutting instrument to be pre-configured to navigate through tissue to the cutting site.

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