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Surgical alignment guide

A technology of guide and surgery, which is applied in the direction of surgery, stereotaxic surgical instruments, medical science, etc., and can solve problems such as misalignment

Inactive Publication Date: 2009-02-18
罗伯特·利耶
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Even when using the alignment handles described in the prior patent application, misalignment can occur in patients whose desired abduction or anteversion angles are different than typical

Method used

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  • Surgical alignment guide
  • Surgical alignment guide
  • Surgical alignment guide

Examples

Experimental program
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Embodiment Construction

[0027] Referring to FIGS. 1 to 4 , the surgical alignment guide in this embodiment has a rod 10 , and the lower end of the rod 10 is provided with a protruding portion 12 of the support member for repairing the outer cup of the acetabulum. The protrusion 12 has a hole 14 whose axis extends at an angle of 45° relative to the axis of the rod 10 . Both ends of the bore 14 have enlarged diameter portions 14a and 14b to facilitate the engagement of the prosthetic acetabular cup spacer and connectors (eg screws) with the prosthetic acetabular cup to be mounted on the support.

[0028] A pair of generally opposed radially extending fingers 16 and 17 are mounted on the upper end of stem 10 and are spaced from outer cup support boss 12 . The fingers 16 and 17 are angularly spaced about the axis of the rod such that the radial lines defining the centerlines of the respective fingers form an included angle of 150°. Each finger 16 and 17 is formed with a plurality of adjacent radial groo...

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Abstract

A surgical alignment guide for hip replacement or revision surgery includes a support (12) for a prosthetic acetabular cup, the support being connected to one end of a carrier shaft (10). The support (12) has a bore (14) angled relative to the shaft so that a prosthetic acetabular cup secured to the support (12) has the correct orientation. An arm (26) extends from the shaft (10) at a position spaced from the support (12), and an adjustment arrangement (17, 21) is associated with the shaft (10) to enable adjustment of the angular position of the bore (14) with respect to the arm (26). In one form, an outer end of the arm (26) is connected to a gauge (28) which provides an alignment orientation indication of the cup support (12) and a prosthetic acetabular cup attached thereto. The adjustment arrangement may have two radial fingers (17) extending from the shaft (10) and engagable with teeth (24) associated with the arm (26).

Description

technical field [0001] The present invention relates to surgical alignment guides, and more particularly to alignment guides for use in aligning a prosthetic acetabular cup with a reamed acetabulum of a patient undergoing hip replacement surgery. Background technique [0002] In International Patent Application PCT / AU02 / 01482, filed 1 November 2002, an alignment handle for hip replacement surgery is described. The alignment handle includes a body with a gauge at one end of the body and a connector at the other end of the body. A gauge, preferably a plumb bob or the like, provides a visual indication when the alignment handle is in a predetermined orientation relative to at least a first plane of the frame of reference. [0003] The specification discloses an alignment handle that can be attached to a left or right prosthetic acetabular cup support, depending on whether the hip being operated on is the patient's left or right hip. [0004] However, providing selectable left...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/56A61F2/34A61F2/46
CPCA61F2002/30708A61B2017/0046A61F2/34A61B2019/469A61F2002/3054A61F2002/4668A61F2/4609A61B17/1746A61B19/201A61F2250/0084A61B2090/069A61B90/11
Inventor 罗伯特·利耶
Owner 罗伯特·利耶