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Connecting sleeve for anchor rods of two oppositely arranged prostheses

A technology of connecting sleeves and relative ground, applied in the directions of prostheses, fixators, internal fixators, etc., to achieve the effect of simple manufacture and reduced cost

Active Publication Date: 2022-06-03
WALDEMAR LINK GMBH & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In contrast, however, there is the disadvantage that a high manufacturing precision is required for such wedge connectors in order to achieve the desired high fastening reliability.

Method used

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  • Connecting sleeve for anchor rods of two oppositely arranged prostheses
  • Connecting sleeve for anchor rods of two oppositely arranged prostheses
  • Connecting sleeve for anchor rods of two oppositely arranged prostheses

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] An embodiment of the connection sleeve according to the present invention is described below. the connection sleeve at each of its two ends

[0028] The receiving bushes 1, 2 are constructed substantially identically. They differ only in the length of the corresponding accommodating hole and

[0029] The receiving bush 1 has a cavity 10 in its inner cavity extending in the axial direction. The cavity is designed as a cylindrical hole, but also

[0030] The receiving holes 15, 16 are also oriented in such a way that they point towards the central axis 19 of the lumen 10. They are used to hold solid

[0031] The proximal receiving bush 2 is correspondingly configured with a cavity 20, holes 25, 26 and a central axis 29. To avoid repetition,

[0032] The coupling region 3 is located on the end of the proximal or distal receiving bushing 1, 2 opposite the respective end side. in two

[0033] The two fork tines 33, 33' are arranged in a U shape with a fork bottom 34 between...

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Abstract

The invention relates to a connecting sleeve for anchor rods of two oppositely arranged prostheses. The reinforcement sleeve comprises two receiving bushings for the prosthesis rod in each case and a detachable coupling region arranged between these receiving bushings for a push-pull and torsion-proof connection. According to the invention, these receiving bushings have, on their side facing the coupling region, respectively a fork of a cooperating fork counterpart, at the foot of which a mating block is arranged, the mating block The sides of the fork have the same spacing as the inner width of the fork and are configured to rest planarly on the flanks of the fork, at least one fixing screw being arranged transversely through the fork. The fork connection is easier to manufacture than the known wedge connection, but is sufficiently durable. Unlike the wedge connection, no precise fit is required; a clearance fit between the fork and mating block is basically sufficient, wherein excessive play is eliminated by means of the set screw.

Description

Connection sleeve for anchor rods of two prostheses arranged oppositely technical field The present invention relates to a prosthesis for two oppositely arranged prostheses, preferably on an elongated bone, such as a femur the connecting sleeve of the anchor rod. The reinforcing sleeve includes two receiving bushings for the prosthesis rod and arranged in these receiving bushings Separable coupling regions between the sleeves for a push-pull and torsion-resistant connection. Background technique [0002] Especially elongated bones are often articulated at both ends. This is especially true for slender, large limb bones, such as the thighbone or humerus. Artificial joints, intra-articular prostheses may be implanted at one or both ends due to disease or wear and tear (Gelenkendoprothese). In some cases, this occurs first at one end of the bone and simultaneously at the other end happen, happen at a later date, or not happen at all. [0003] In some cases, slender ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/28A61F2/36A61F2/30
CPCA61F2/3859A61F2/28A61F2/30721A61F2/30734A61F2/36A61F2/3662A61F2/3804A61F2/4059A61F2002/2825A61F2002/2853A61F2002/30224A61F2002/30235A61F2002/30329A61F2002/30331A61F2002/30385A61F2002/30433A61F2002/30507A61F2002/3674A61B17/72A61F2/30739A61B17/744A61F2002/30604
Inventor H.D.林克U.博尔歇斯
Owner WALDEMAR LINK GMBH & CO
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