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Determining anatomical orientations

A technology for orientation and data determination, applied in the direction of prosthesis, application, diagnostic recording/measurement, etc., which can solve problems such as misalignment and uneven wear

Active Publication Date: 2015-04-08
SMITH & NEPHEW INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In some cases, incorrect alignment may result in uneven wear, misalignment, or other adverse effects

Method used

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  • Determining anatomical orientations
  • Determining anatomical orientations
  • Determining anatomical orientations

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Embodiment Construction

[0033] refer to figure 1 A spatial tracking system 100 includes a control unit 10, a position tracking device such as an electromagnetic field generator 20, and two or more reference devices such as magnetic sensors 30a-30c. System 100 also includes probe 70 and surgical tool 80, such as a reamer or indenter. The control unit 10 tracks the spatial positions of the magnetic sensors 30a-30c, for example by determining their relative positions to the electromagnetic field generator 20.

[0034] System 100 may be used to determine anatomical orientation, which may include position and orientation having a defined relationship with respect to an anatomical structure. The anatomical orientation may be an orientation relative to a subject 50, such as a patient undergoing hip arthroplasty or other surgery. As described further below, the anatomical orientation is determined based at least in part on the orientation of a reference surface 12, such as the surface of the operating tab...

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Abstract

Methods, systems, and apparatus for determining anatomical orientations are described. Data is received that indicates a position of a reference device configured to move with a pelvis of a subject. Data is received that indicates locations corresponding to a reference surface. Data is received that indicates locations on the pelvis. One or more anatomical orientations are determined based on the locations corresponding to the reference surface and the locations on the pelvis. The anatomical orientations are registered to the reference device.

Description

[0001] Cross References to Related Applications [0002] This application claims priority and full benefit of US Provisional Application Serial No. 61 / 604,612, filed February 29, 2012, and entitled "DETERMINING ANATOMICAL ORIENTATIONS," the entire contents of which are hereby incorporated by reference. technical field [0003] The present disclosure relates to determining anatomical orientation. Background technique [0004] In hip arthroplasty, the acetabulum is sometimes reamed or otherwise prepared to receive an acetabular cup implant. Proper alignment of the reamer and impactor during the hip arthroplasty procedure is very important to achieve the desired performance of the hip prosthesis. In some cases, incorrect alignment may result in uneven wear, misalignment, or other adverse effects. Contents of the invention [0005] In one general aspect, a method includes determining an anatomical orientation based on an orientation of a reference surface and a feature of a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B19/00A61F2/46
CPCA61B2019/507A61F2/34A61F2002/469A61B19/54A61B19/5244A61F2002/4668A61B2019/5255A61F2/4657A61B2019/5475A61B5/6878A61B19/50A61B2019/5251A61B2019/5416A61B5/1127A61B5/064A61B5/1114A61B5/062A61B2034/2055A61B2090/3916A61B2090/3975A61B34/20A61B34/10A61B2034/107A61B2034/2051A61B90/39F04C2270/041
Inventor 梅森·詹姆斯·贝滕加
Owner SMITH & NEPHEW INC