Patent · US Expired

Pivotal securing system at a bone screw

US6146383A · kind A · utility

542Cited by

2References

13Claims

0Family size

Assignee

Sulzer Orthopaedie AG · CH

Inventors

Armin Studer · Winterthur, CH
Cosimo Donno · Pfungen, CH
Markus Frohlich · Balterswil, CH

Key dates

Filing date	Feb 1, 1999
Grant date	Nov 14, 2000
Priority date	—
Expiry date	Feb 1, 2019

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61B2017/8655
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

With the invention a pivotal securing system between a bone screw (1) with a spherical head part (2) and a reception part (3) is shown. The reception part has a passage bore (4) with a shoulder at its end which encloses the head part (2) at its lower side and which forms an abutment when the head part (2) is pressed on by the clamping screw (7) in a settable pivotal position (8). The head part (2) is executed as a separate part (9) which can be screwed together with the bone screw (1) in order to be able to place on the reception part (3) and to connect it to the latter after the implantation of the bone screw (1).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.