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Method for achieving optical surgical navigation surgical instrument calibration through calibrating device

A technology for calibrating devices and surgical instruments, which is applied in the field of surgical navigation and can solve the problems of inconvenient operation and complicated calibration devices.

Active Publication Date: 2016-09-07
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the calibration device used in this type of method is complicated and inconvenient to operate

Method used

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  • Method for achieving optical surgical navigation surgical instrument calibration through calibrating device
  • Method for achieving optical surgical navigation surgical instrument calibration through calibrating device
  • Method for achieving optical surgical navigation surgical instrument calibration through calibrating device

Examples

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with specific examples.

[0033] figure 1 It is a schematic diagram of a calibration device according to an embodiment of the present invention. The calibration device includes a substrate 1, a club body, and a reflective ball 2. There are three reflective balls 2, and each reflective ball 2 is mounted on the substrate 1 through a club body. The distance between any two of the three reflective balls 2 is not equal, and the center of the reflective ball 2 is used as the marking point. There are three linear grooves 3 on the substrate 1, and the grooves are semicircular grooves with different diameters. When the calibration device is manufactured, the relative positional relationship of the three reflective balls 2 is known, and the relative positional relationship between the upper and lower ports of the three linear groove channels and the three reflective balls is known.

[0034] figure 2 It is a ...

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Abstract

The invention discloses a method for achieving optical surgical navigation surgical instrument calibration through a calibrating device. The method comprises the steps of 1) establishing a calibrating device coordinate system; 2) calculating a transfer matrix from a surgical navigation coordinate system to the calibrating device coordinate system; 3) establishing a surgical instrument coordinate system and calculating a transfer matrix between the surgical instrument coordinate system and the surgical navigation coordinate system; 4) calculating a transfer matrix from the calibrating device coordinate system to the surgical instrument coordinate system; 5) calculating the coordinates and orientation of a tip of a surgical instrument in the surgical instrument coordinate system. The method reduces operating complexity, reduces calibrating time, is suitable for field calibration and has higher clinical application value.

Description

technical field [0001] The invention relates to the field of surgical navigation, in particular to a method for realizing calibration of optical surgical navigation surgical instruments by using a calibration device. Background technique [0002] In terms of surgery, the surgical navigation system provides a new surgical implementation plan for surgery, and gradually replaces the traditional surgical implementation plan, guiding the development of surgical treatment in the direction of precision and minimal invasiveness. At present, the clinical application of surgical navigation system in neurosurgery, orthopedics, otolaryngology and other surgical fields has achieved remarkable results. Compared with traditional surgical treatment, it has made great improvements in terms of surgical accuracy, surgical time consumption, surgical trauma, and postoperative efficacy. Optical surgical navigation is the most widely used surgical navigation technology, and it has higher precisio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B34/20
Inventor 杨荣骞肖伟虎林钦永张哲思
Owner SOUTH CHINA UNIV OF TECH
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