Publication

Surgical navigation system

Charles Baur
2005
Patents

Abstract

The invention relates to a surgical navigation system, comprising a microscope to which a 3D measuring apparatus is rigidly fixed, for localising objects within the field of operation. Markers are fixed to the objects the position of which is desirable to know, for example, the patient or surgical instruments, which are themselves connected to the measuring system. The change in coordinates between the measuring system and the microscope is fixed as the two devices are rigidly connected. Also, knowing the position of the markers relating to the measuring system, it is possible to calculate the change in coordinates between the markers and the image from the microscope. When the markers are recorded, in other words when the relationship between the real objects and the virtual objects is determined, the information can then be used as a navigational instrument and/or for enhanced reality. A typical application for enhanced reality is the superimposition of a 3D anatomical model of the patient on the microscope image, generated from a pre-operative scan of the patient.

Official source

https://infoscience.epfl.ch/entities/publication/edfde71a-3fe4-497e-9bb5-d582a738d316

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Charles Baur
2005
Patents

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/edfde71a-3fe4-497e-9bb5-d582a738d316

About this result

Related concepts (32)

Rigid body

In physics, a rigid body, also known as a rigid object, is a solid body in which deformation is zero or negligible. The distance between any two given points on a rigid body remains constant in time regardless of external forces or moments exerted on it. A rigid body is usually considered as a continuous distribution of mass. In the study of special relativity, a perfectly rigid body does not exist; and objects can only be assumed to be rigid if they are not moving near the speed of light.

Rigid body dynamics

In the physical science of dynamics, rigid-body dynamics studies the movement of systems of interconnected bodies under the action of external forces. The assumption that the bodies are rigid (i.e. they do not deform under the action of applied forces) simplifies analysis, by reducing the parameters that describe the configuration of the system to the translation and rotation of reference frames attached to each body. This excludes bodies that display fluid, highly elastic, and plastic behavior.

Microscope

A microscope () is a laboratory instrument used to examine objects that are too small to be seen by the naked eye. Microscopy is the science of investigating small objects and structures using a microscope. Microscopic means being invisible to the eye unless aided by a microscope. There are many types of microscopes, and they may be grouped in different ways.

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Surgical navigation system

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