Closing system for a passage for instruments

US5423761A · kind A · utility

Inventors

• Peter Hein · Bamberg, DE
• Helmut Laser · Berlin, DE

Key dates

• Filing date: Jun 28, 1993
• Grant date: Jun 13, 1995
• Expiry date: Jun 28, 2013

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M39/26
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A closing system for an instrument passage, particularly for use in laparoscopic puncture devices. The object of the invention is to provide a closing system of safe operation which permits a non-complicated cleaning and has a simple and comparatively small construction. The object is realized according to the invention in that a closing member is a floatingly seated disc which centrally fits into a conical seat and which is held in any position only by a non-symmetrically acting magnetic force of at least one magnet, preferably a permanent magnet.