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Bone fixing element

A technology for fixing components and bones, which is applied in the direction of fixators, fastening devices, bone implants, etc., and can solve problems such as loosening of implants

Inactive Publication Date: 2007-03-28
SYNTHES GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This change in bone structure can lead to loosening of the implant

Method used

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  • Bone fixing element
  • Bone fixing element
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Experimental program
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Embodiment Construction

[0033] The following description of a preferred embodiment is provided for a better understanding of the present invention in conjunction with the accompanying drawings.

[0034] Bone fixation element 1 shown in Fig. 5 is mainly made up of a hollow cylinder 2, and it comprises a large amount of perforations 3 on its peripheral surface 4, an open front end 5 that is suitable for leading into bone, a rear end 6 and A cylinder with a longitudinal axis 7 .

[0035] The development of the hollow cylinder wall shown in FIG. 1 shows how the perforation increases continuously from the rear to the front, so that the rigidity of the hollow cylinder correspondingly decreases along its longitudinal axis from the rear end to the front end.

[0036] On the rear end 6 said peripheral surface 6 is provided with an external thread 8 . A conical head 9 forms the rear end section of the bone fixation element, which can be inserted into a bone plate (not shown in the figure).

[0037] Variants ...

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PUM

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Abstract

A bone fixation element consisting of a hollow member having a wall, a plurality of perforations locating in the wall, a front end which is suited for insertion into the bone, a rear end, and a longitudinal axis. The stiffness of the hollow member may vary along its longitudinal axis from the rear end to the front end. Changes in the porosity and / or the thickness of the wall of the bone fixation element may result in changes in stiffness of the bone fixation element. An increase in porosity and / or decrease in thickness may result in a decrease in stiffness, and a decrease in porosity and / or increase in thickness may result in an increase in stiffness.

Description

technical field [0001] The present invention relates to a bone fixation element. Background technique [0002] Current implants are less concerned with the reaction of surrounding tissues, especially bone, to external implants. Therefore, firstly, the local microcirculation or perfusion is damaged and the local biological structure is changed. [0003] In particular, the influence on relatively rigid implants made of titanium or steel is insufficiently taken into account in current implants. To prevent fracture due to fatigue, the implant is designed to be as rigid as possible. Since the implanted implant at least partially bears the load of the bone during the fracture treatment and throughout its stay in the body, the bone structure is relatively weak in the relevant area (Wolff Sches' law). This change in bone structure may cause the implant to loosen. [0004] In particular hollow cylinders used for fracture treatment in osteoporosis surgery (for example according to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/86A61F2/44A61B17/56A61B17/84A61F2/00A61F2/28A61F2/30A61L27/00
CPCA61F2230/0023A61F2002/30011A61F2250/0036A61F2002/3085A61F2230/0069A61F2250/0026A61F2/4455A61F2002/30787A61F2250/0023A61F2002/30125A61F2002/30324A61F2002/30955A61F2002/4475A61F2002/30156A61B17/84A61F2230/0008A61F2002/30322A61B17/8635A61F2002/30153A61F2002/30113A61F2/44A61F2250/0018A61F2230/0006A61F2230/0019A61F2002/30014A61F2002/30235A61B17/864A61F2002/30593
Inventor 约尔格·戈尔德哈恩约恩·泽贝克埃里希·施奈德
Owner SYNTHES GMBH