Hybrid navigation system for tracking the position of body tissue

a navigation system and body technology, applied in the field of surgical navigation system, can solve the problems of system not producing signals that accurately represent the position of the body tissue, adds to the trauma to which the patient is exposed, and limitations associated with its use, and achieves the effects of low strength, low strength energy, and small siz
US20070225595A1Inactive Publication Date: 2007-09-27STRYKER CORP
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
STRYKER CORP
Publication Date
2007-09-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

A hybrid surgical navigation system for tracking the position of body tissue. The system includes a marker shaped to be mounted subcutaneously to the tissue the position of which is to be tracked. A tracker located above skin level is placed near the marker. A first navigation system integral with the marker and tracker generate data indicating the position of the marker relative to the tracker. A second navigation monitors the position of the tracker. The tracker also includes a transmitter for transmitting data generated by the first navigation system. Based on the data generated by the first navigation system representative of the position of the marker relative to the tracker and the data from the second navigation system representative of the position of the tracker, the position of the marker and tissue to which it is attached is determined.
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Description

FIELD OF THE INVENTION

[0001] This invention relates generally to a surgical navigation system used to track the position of body tissue. More particularly, this invention relates to a surgical navigation for tracking body tissue that does not expose the tissue to excessive trauma and that can be used in the presence of ferromagnetic objects. BACKGROUND OF THE INVENTION

[0002] Surgical navigation systems are increasingly used as aids in surgical procedures. Generally, a surgical navigation includes a tracker, a localizer and a processor. The tracker is attached to an instrument or section of tissue the position of which is to be tracked. The localizer, relative to the tracker, is static. One or more transmitters are contained in either the tracker or localizer. The other of localizer or the tracker contains one or more complementary receives able to detect the energy emitted by the transmitters. It is known to construct surgical navigation systems out of transmitter receiver pairs w...

Claims

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