Device for straightening spinal column

US4445513A · kind A · utility

Assignee

• Max Bernhard Ulrich · DE

Inventors

• Bernhard Ulrich · Port Aransas, US
• Gys H. Slot · Nijmegen, NL

Key dates

• Filing date: May 28, 1982
• Grant date: May 1, 1984
• Expiry date: May 28, 2002

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B17/809
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A device for straightening a spinal column having a succession of vertebrae extending along a nonstraight line lying generally in a plane has an elongated bar lying generally in the plane of the line and having a pair of relatively longitudinally displaceable bar parts in turn having respective bar ends. A pair of connectors of the bar ends are secured to respective vertebrae of the succession. Respective pivots between the connectors and the respective ends define therebetween respective generally parallel axes transverse to the plane. A main abutment movable along and flexible on one of the parts and longitudinally engageable with the other of the parts serves for limiting relative longitudinal displacement of the parts toward each other. Thus the main abutment can be moved along the one part to increase the spacing between the ends and thereby can straighten the succession of vertebrae between the connectors.