Randall L. Schlesinger,Stephen J. Blumenkranz,Christopher R. Carlson,Vincent Duindam,Anoop B. Kowshik,Timothy D. Soper
申请号：
US16509177
公开号：
US20200008655A1
申请日:
2019.07.11
申请国别(地区):
US
年份:
2020
代理人:
摘要：
An apparatus may include an instrument including an elongated shaft and a shape sensor including an elongated optical fiber extending within the elongated shaft at a first radial distance from a neutral axis. The apparatus may also comprise a reference sensor disposed within the elongated shaft. The shape sensor may be fixed in a known first position relative to the reference sensor. The apparatus may also comprise a twist resistant feature disposed within the elongated shaft. The twist resistant feature may be coupled to the shape sensor to reduce twisting of the elongated optical fiber relative to the elongated shaft while permitting axial translation of the elongated optical fiber within the elongated shaft. The shape sensor may be coupled to the twist resistant feature at a known second position relative to the reference sensor.
