06511417 is referenced by 47 patents and cites 4 patents.

An endoscope shape detection system has a CPU included in a control unit. The CPU performs frequency sampling on digital data to calculate coordinates indicating the spatial positions of source coils incorporated in an insertion unit of an endoscope and of marker coils. An inserted state of the insertion unit of the endoscope is estimated based on the calculated coordinate data indicating the positions of the source coils. Display data based on which shape of the endoscope depicted is produced from the calculated coordinate data indicating the positions of the source coils, and output to a video RAM. Display data based on which marker coils are depicted is produced from the calculated coordinate data indicating the positions of the marker coils, and output to the video RAM. Consequently, the positions of the markers are depicted together with the shape of the endoscope. The positional relationship between the insertion unit of the endoscope and a patient's body can therefore be ascertained.

Title
System for detecting the shape of an endoscope using source coils and sense coils
Application Number
9/387859
Publication Number
6511417 (B1)
Application Date
September 1, 1999
Publication Date
January 28, 2003
Inventor
Tetsuo Nonami
Hino
US
Yasuo Hirata
Hachioji
US
Jun Hasegawa
Hino
US
Tsugio Okazaki
Aizuwakamatsu
US
Yoshinao Oaki
Hino
US
Hiroshi Ishii
Hino
US
Hiroki Moriyama
Akishima
US
Takayasu Miyagi
Hachioji
US
Kazutaka Tsuji
Hachioji
US
Masanao Hara
Hino
US
Sumihiro Uchimura
Sagamihara
US
Katsuyoshi Sasagawa
Hino
US
Takeshi Kawabata
Sagamihara
US
Seiki Toriyama
Hino
US
Fumiyuki Onoda
Tama
US
Yasuhiro Yoshizawa
Hachioji
US
Chieko Aizawa
Hachioji
US
Akira Taniguchi
Hachioji
US
Agent
Ostrolenk Faber Gerb & Soffen
US
Assignee
Olympus Optical
US
IPC
A61B 1/00
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