Operating insert for a resectoscope with sealing means

US5041111A · kind A · utility

Assignee

• RICHARD WOLF GMBH · DE

Inventors

• Siegfried Bauer · Bruchsal, DE
• Ernst Falk · Maulbronn, DE

Key dates

• Filing date: Sep 29, 1989
• Grant date: Aug 20, 1991
• Expiry date: Sep 29, 2009

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B18/149
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An operating insert to be passed through a resectoscope shaft comprises a channel for an axially displaceable cutting loop which extends parallel to an optical system through the operating insert. The cutting loop has branches secured within a tube and merging at their proximal ends into an electrode stem which extends beyond the shaft as far as an electrode carrier. An annular cylindrical sealing element of plastics material or the like is secured on the stem or on the inner side of the channel and bears via sealing projections against the inner surface of the cutting loop so as to prevent the passage of fluid to the proximal end of the channel while allowing axial movement of the stem and the tube within the channel.