Surgical instrument for an endoscope

Details Surgical instrument for an endoscope Surgical instrument for an endoscope

1983-02-23

1984-10-02

Thaler, Michael H.

Surgery

Truss

Perineal

12830315, 128772, 604 95, A61B 1736, A61B 1732

Patent

active

044741740

ABSTRACT:
A surgical instrument is described for use with a flexible endoscope. The instrument includes a tubular member such as a catheter, in which a surgical tool is placed. The tool is formed of a working end and a control wire connected thereto and formed of a helically twisted flat ribbon sized to slidingly fit within the lumen of the tubular member. With a helically twisted control wire, the instrument may be bent and flexed in any plane without breakage, yet preserving accurate axial positional control substantially without longitudinal backlash. A distal end of the tubular member has a predetermined bend, with a channel cut therein in a manner selected to enable the working end of the tool, such as a knife, to be automatically moved into the channel and thus reliably extended from a side of the distal end of the catheter. A manipulator is used at the proximal end of the endoscope to precisely control the position of the working end of the surgical tool.

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