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CATHETER DE REFERENCE POUR CALIBRATION D'IMPEDANCE
专利权人:
INC.;BIOSENSE WEBSTER
发明人:
ALTMANN, ANDRES CLAUDIO,EPHRATH, YARON,GOVARI, ASSAF
申请号:
CA2591627
公开号:
CA2591627C
申请日:
2007.06.14
申请国别(地区):
CA
年份:
2013
代理人:
摘要:
A method for position sensing includes placing at a known position within a body of a subject a reference probe including at least one reference electrode. Electrical currents are passed through the body between the reference electrode and body surface electrodes. Characteristics of the electrical currents are measured and are used to generate an approximation of the known position of the reference probe. A correction factor is determined based on a relationship between the approximation and the known position. A target probe including at least one target electrode is placed within the body of the subject and second electrical currents are passed through the body between the target electrode and the body surface electrodes. Characteristics of the second electrical currents are measured and used to generate a calculated position of the target probe. The correction factor is applied to correct the calculated position.
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