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Angular adjustment mechanism, surgical alignment guide and surgical instrument assembly

An angle adjustment and guide technology, applied in the field of orthopedic surgery and knee surgery, can solve problems such as limiting the adjustment range, and achieve the effect of easy cleaning and assembly

Active Publication Date: 2013-07-24
DEPUY (IRELAND) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Restrictions on the number of notches limit the possible adjustment range

Method used

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  • Angular adjustment mechanism, surgical alignment guide and surgical instrument assembly
  • Angular adjustment mechanism, surgical alignment guide and surgical instrument assembly
  • Angular adjustment mechanism, surgical alignment guide and surgical instrument assembly

Examples

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Embodiment Construction

[0046] FIG. 1 depicts a perspective view showing components of a surgical instrument system for aligning a cutting guide. The system comprises an intramedullary rod comprising a cylindrical part 2 having a longitudinal groove 4 formed along its length. In use, the cylindrical section 2 is inserted into the intramedullary canal of the femur, and the longitudinal groove 4 provides means for pressure relief during insertion.

[0047] The alignment guide 6 (partially shown in FIG. 1 ) comprises a through hole into which the cylindrical section 2 of the intramedullary rod is inserted so that the alignment guide 6 can be moved along the cylindrical section 2 along the Move longitudinally and also rotate relative to the cylindrical section.

[0048] A cutting guide 8 is provided separately from the alignment guide 6 . The cutting guide 8 comprises a cutting notch 10 defining the cut made to the bone. The cutting guide 8 also includes attachment holes 12 for securing the cutting gu...

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PUM

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Abstract

An angular adjustment mechanism for a surgical instrument is described. The mechanism comprises an adjustment member (102) configured for rotation about a longitudinal axis (122), the adjustment member comprising a plurality of pairs of facets (134) arranged about the longitudinal axis. Each of the plurality of pairs of facets defines a respective angled axis (148B, 148C) at an angle (150B, 150C) relative to the longitudinal axis. A pivoting member (104) is arranged to pivot about a pivot axis perpendicular to the longitudinal axis and comprises a recess (128) for receiving the adjustment member and engaging one pair of the plurality of pairs of facets. This provides an angular adjustment mechanism in which facets on the outside of the adjustment member engage corresponding surfaces in a recess on a pivoting member. The use of facets provides a secure connection while allowing a greater degree of angular adjustment and providing a further benefit of simple operation.

Description

technical field [0001] The present invention relates to angle adjustment mechanisms, surgical alignment guides, and surgical instrument assemblies. The invention is particularly suitable for use in orthopedic surgery, especially knee surgery. Background technique [0002] In orthopedic knee surgery, incisions may be made to the femoral head to allow correction of varus or valgus alignment. Use a cutting guide to precisely position the cut. Pins are used to secure the cutting guide to the bone, and the cutting guide provides a stable surface to guide the resection of the femoral head. [0003] To ensure that the cutting guide is properly placed on the femur, an alignment system is typically used. An intramedullary rod is inserted into the intramedullary canal of the femur to provide a stable reference to the intramedullary axis of the femur. An alignment guide is provided on this rod. The alignment guide contains a dial indicating the desired angle of the notch relative ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/15
CPCA61B17/1764A61B17/155
Inventor D.比达尔K.布思G.芬顿A.弗特拉莫
Owner DEPUY (IRELAND) LTD
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