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公开(公告)号：US20230349733A1
公开(公告)日：2023-11-02
申请号：US18348238
申请日：2023-07-06
Applicant: Intuitive Surgical Operations, Inc.
Inventor： Mark E. Froggatt , Dawn K. Gifford , Alexander K. Sang
CPC classification number: G01D5/35316 , G02B6/02042 , G02B6/02076 , G02B6/02128 , G02B6/022
Abstract: An optical fiber with one or more microgratings is disclosed. Methods and apparatus are described for making an optical fiber with one or more microgratings. Methods and apparatus are described for an optical fiber with one or more microgratings. Optical sensing methods and an optical sensing system effectively decouple strain range from the laser tuning range, permit the use of a smaller tuning range without sacrificing strain range, and compensate for ambiguity in phase measurements normally associated with smaller tuning ranges.
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公开(公告)号：US20230204852A1
公开(公告)日：2023-06-29
申请号：US18115736
申请日：2023-02-28
Applicant: Intuitive Surgical Operations, Inc.
Inventor： Mark E. Froggatt , Dawn K. Gifford , Jeffrey T. LaCroix , Patrick Roye , Alexander K. Sang
CPC classification number: G02B6/02042 , G01D5/3538 , G02B6/02 , G01D5/35393 , G01B11/161 , G01B21/042 , G01D5/35303
Abstract: An optical fiber includes multiple optical cores configured in the fiber including a set of primary cores and an auxiliary core. An interferometric measurement system uses measurements from the multiple primary cores to predict a response from the auxiliary core. The predicted auxiliary core response is compared with the actual auxiliary core response to determine if they differ by more than a predetermined amount, in which case the measurements from the multiple primary cores may be deemed unreliable.
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公开(公告)号：US20210199884A1
公开(公告)日：2021-07-01
申请号：US17203701
申请日：2021-03-16
Applicant: Intuitive Surgical Operations, Inc.
Inventor： Mark E. Froggatt , Dawn K. Gifford , Jeffrey T. LaCroix , Patrick Roye , Alexander K. Sang
Abstract: An optical fiber includes multiple optical cores configured in the fiber including a set of primary cores and an auxiliary core. An interferometric measurement system uses measurements from the multiple primary cores to predict a response from the auxiliary core. The predicted auxiliary core response is compared with the actual auxiliary core response to determine if they differ by more than a predetermined amount, in which case the measurements from the multiple primary cores may be deemed unreliable.
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公开(公告)号：US20210172768A1
公开(公告)日：2021-06-10
申请号：US17178061
申请日：2021-02-17
Applicant: Intuitive Surgical Operations, Inc.
Inventor： Mark E. Froggatt , Dawn K. Gifford , Eric E. Sanborn , Alexander K. Sang
Abstract: Example embodiments include an optical interrogation system with a sensing fiber having a single core, the single core having multiple light propagating modes. Interferometric apparatus probes the single core multimode sensing fiber over a range of predetermined wavelengths and detects measurement interferometric data associated with the multiple light propagating modes of the single core for each predetermined wavelength in the range. Data processing circuitry processes the measurement interferometric data associated with the multiple light propagating modes of the single core to determine one or more shape-sensing parameters of the sensing fiber from which the shape of the fiber in three dimensions can be determined.
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15.发明授权公开(公告)号：US10921117B2
公开(公告)日：2021-02-16
申请号：US16908414
申请日：2020-06-22
Applicant: Intuitive Surgical Operations, Inc.
Inventor： Mark E. Froggatt , Justin W. Klein , Dawn K. Gifford , Stephen T. Kreger
Abstract: A multi-core fiber includes multiple optical cores, and for each different core of a set of different cores of the multiple optical cores, a total change in optical length is detected. The total change in optical length represents an accumulation of all changes in optical length for multiple segments of that different core up to a point on the multi-core fiber. A difference is determined between the total changes in optical length for cores of the set of different cores. A twist parameter and/or a bend angle associated with the multi-core fiber at the point on the multi-core fiber is/are determined based on the difference.
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Patent Agency Ranking
16.发明授权公开(公告)号：US10908047B2
公开(公告)日：2021-02-02
申请号：US16900643
申请日：2020-06-12
Applicant: Intuitive Surgical Operations, Inc.
Inventor： Dawn K. Gifford , Mark E. Froggatt , Patrick Roye , Jeffrey T. LaCroix
Abstract: A system and method are used for an optical fiber having a core multiple, closely-spaced optical gratings written along the core that create a repeated pattern in the core. A memory stores predetermined reference reflection data and measurement reflection data determined for a length of the core detected from interferometric patterns corresponding to scatter reflections received from the core. Data processing circuitry reduces or removes from the measurement reflection data information that corresponds to reflections due to the repeated pattern in the core to produce filtered measurement data. One or more portions of the filtered measurement data is/are correlated with one or more portions of the reference reflection data to produce multiple correlation values. The greatest of the multiple correlation values is determined, and a location along the fiber corresponding to the greatest correlation value is identified.
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17.发明申请公开(公告)号：US20200264018A1
公开(公告)日：2020-08-20
申请号：US16652938
申请日：2018-09-21
Applicant: Intuitive Surgical Operations, Inc.
Inventor： Mark E. Froggatt , Dawn K. Gifford , Alexander K. Sang
Abstract: An optical fiber with one or more microgratings is disclosed. Methods and apparatus are described for making an optical fiber with one or more microgratings. Methods and apparatus are described for an optical fiber with one or more microgratings Optical sensing methods and an optical sensing system effectively decouple strain range from the laser tuning range, permit the use of a smaller tuning range without sacrificing strain range, and compensate for ambiguity in phase measurements normally associated with smaller tuning ranges.
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18.发明授权公开(公告)号：US10732075B2
公开(公告)日：2020-08-04
申请号：US15528911
申请日：2016-04-01
Applicant: INTUITIVE SURGICAL OPERATIONS, INC.
Inventor： Dawn K. Gifford , Mark Froggatt , Patrick Roye , Jeffrey Lacroix
Abstract: A system and method are used for an optical fiber having a core multiple, closely spaced optical gratings written along the core that create a repeated pattern in the core. A memory stores predetermined reference reflection data and measurement reflection data determined for a length of the core detected from interferometric patterns corresponding to scatter reflections received from the core. Data processing circuitry reduces or removes from the measurement reflection data information that corresponds to reflections due to the repeated pattern in the core to produce filtered measurement data. One or more portions of the filtered measurement data is/are correlated with one or more portions of the reference reflection data to produce multiple correlation values. The greatest of the multiple correlation values is determined, and a location along the fiber corresponding to the greatest correlation value is identified.
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公开(公告)号：US10132614B2
公开(公告)日：2018-11-20
申请号：US15520950
申请日：2015-12-07
Applicant: INTUITIVE SURGICAL OPERATIONS, INC.
Inventor： Mark Froggatt , Dawn K. Gifford , Stephen T. Kreger , Alexander K. Sang , Jeffrey T. Lacroix , Eric E. Sanborn
Abstract: An optical fiber includes multiple optical waveguides configured in the fiber. An interferometric measurement system mitigates or compensates for the errors imposed by differences in a shape sensing optical fiber's response to temperature and strain. A 3-D shape and/or position are calculated from a set of distributed strain measurements acquired for a multi-core optical shape sensing fiber that compensates for these non-linear errors using one or more additional cores in the multicore fiber that react differently to temperature changes than the existing cores.
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20.发明授权公开(公告)号：US09841269B2
公开(公告)日：2017-12-12
申请号：US14362759
申请日：2012-12-03
Applicant: INTUITIVE SURGICAL OPERATIONS, INC.
Inventor： Mark E. Froggatt , Alexander K. Sang , Dawn K. Gifford , Justin W. Klein
CPC classification number: G01B9/0207 , G01B9/02004 , G01B9/02069 , G01B9/02072 , G01B9/02076 , G01B9/02083 , G01B9/0209 , G01B11/0658 , G01B11/18 , G01D5/3537 , G01L1/242 , G01M11/3172
Abstract: An optical interrogation system, e.g., an OFDR-based system, measures local changes, of index of refraction of a sensing light guide subjected to a time-varying disturbance. Interferometric measurement signals detected for a length of the sensing light guide are transformed into the spectral domain. A time varying signal is determined from the transformed interferometric measurement data set. A compensating signal is determined from the time varying signal which is used to compensate the interferometric measurement data set for the time-varying disturbance. Further robustness is achieved using averaging and strain compensation. The compensation technique may be applied along the length of the light guide.
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