Patent · US Expired

Bone screw

US6755835B2 · kind B2 · utility

323Cited by

11References

59Claims

0Family size

Assignee

Aesculap AG & Co. KG · DE

Inventors

Markus Schultheiss · Nersingen, DE
Lutz Claes · Neu-Ulm, DE
Lothar Kinzl · Ulm, DE

Key dates

Filing date	Jan 24, 2002
Grant date	Jun 29, 2004
Priority date	—
Expiry date	Feb 17, 2022

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61B17/7098
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

In order to produce a bone screw having a screw body which is provided with an external thread and which comprises a flow-through mechanism for bone cement that is used for the production of a cement jacket around the bone screw, such that the bone screw will be anchored in a highly stable manner after being implanted in a bone and especially after being implanted in a bone of reduced quality, it is proposed that the flow-through mechanism should comprise at least one longitudinal recess which is formed in the screw body such that it extends transversely relative to the radial direction and/or transversely relative to the peripheral direction.

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