Patent · US Expired

Bone nail for the treatment of upper arm fractures

US4858602A · kind A · utility

111Cited by

8References

17Claims

0Family size

Assignee

Howmedica GmbH Werk Schonkirchen · DE

Inventors

Hartmut Seidel · Hamburg, DE
Hans E. Harder · Probsteierhagen, DE
Klaus Behrens · Rickling, DE

Key dates

Filing date	Nov 28, 1986
Grant date	Aug 22, 1989
Priority date	—
Expiry date	Nov 28, 2006

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61B17/7283
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A bone nail for the treatment of upper arm fractures comprises a hollow shank adapted to be introduced into the medullary canal and slotted at the distal end, and an expansion screw adapted to be advanced into the shank through rotation of the screw so as to radially expand the slotted end of the shank. An inner thread is formed on the inner wall of the shank outside the slotted region for cooperation with the expansion screw. At least in the slotted region, the cross sectional profile of the shank is provided with alternating elevations and depressions on the inner surface of the wall of the hollow shank.

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