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Height-adjustable spinal implant

An implant, adjustable technology, applied in the direction of spinal implants, medical science, prosthesis, etc., to achieve the effect of simple axial movement and reduce the number of parts

Active Publication Date: 2011-06-22
陶鲁斯有限及两合公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the spinal implant is subjected to high mechanical loads, there is the risk that the drive element will be pressed out of its retaining position due to a curved or convex wall section.

Method used

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  • Height-adjustable spinal implant
  • Height-adjustable spinal implant
  • Height-adjustable spinal implant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] figure 1 A spinal implant 100 is shown having a first part 101 and a second part 102 coaxially oriented towards the median longitudinal axis A. As shown in FIG. The first component 101 and the second component 102 each have wall sections 110 , 111 , 120 , 121 connected to each other in the region of the bases 112 , 122 . These wall sections 110 , 111 , 120 , 121 —viewed in the circumferential direction of the implant 100 —enclose an intermediate space S in each case. The wall sections 110 , 111 of the first part 101 protrude here into corresponding intermediate spaces S between the wall sections 120 , 121 of the second part 102 . The wall sections 120 , 121 of the second part 102 protrude oppositely into the intermediate space S present between the wall sections 110 , 111 of the first part 101 . The first part 101 and the second part 102 are relatively telescopically displaceable in the axial direction, ie along the central longitudinal axis A, and are held against ea...

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PUM

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Abstract

A height-adjustable spinal implant has first and second components that are rotationally fixed relative to one another and axially movable along a central longitudinal axis of the implant. Each of the components have at least two wall segments that are fixed on a base and that extend in the direction of the central longitudinal axis and are at a radial distance from the latter. Circumferentially adjacent wall segments each flank a space in which a wall segment of the respective other component extends and is axially guided. A drive element is disposed in the interior of the implant that engages with the second component in a meshing relationship. The drive element bears, in the load direction, on the first component and has a toothed ring that is used for its rotary actuation. For the rotary actuation of the drive element, an access opening is present in a wall segment of the first component. The free ends of the wall segments of the first component are connected to each other by a holding element.

Description

technical field [0001] The present invention relates to a height-adjustable spinal implant for insertion between vertebral bodies. The implant includes first and second members relatively telescopically movable along a medial longitudinal axis of the implant. These parts are axially displaceable, but are held against each other in a rotationally fixed manner. Each part comprises at least two wall sections fastened to the base, extending both in the direction of the central longitudinal axis and in the circumferential direction. The wall sections here have a radial distance from the central longitudinal axis. Adjacent wall sections in the circumferential direction each enclose an intermediate space, into which a wall section of the other component protrudes and is guided axially in this space. A transmission element is located in the intermediate cavity surrounded by the first part and the second part, the transmission part is held on the first part, and the second part is a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/44
CPCA61F2002/30841A61F2002/30601A61F2002/30405A61F2002/305A61F2220/0025A61F2002/30787A61F2002/3055A61F2002/4475A61F2002/30525A61F2/4611A61F2/44A61F2/30728A61F2002/30383A61F2002/30593
Inventor 基利安·克劳斯
Owner 陶鲁斯有限及两合公司