-
公开(公告)号：US12070303B2
公开(公告)日：2024-08-27
申请号：US18473885
申请日：2023-09-25
申请人： CloudNav Inc.
发明人： Erik E. Anderson , Jon D. Maiara
CPC分类号： A61B5/062 , A61M25/0127 , G16H40/67 , A61B5/287 , A61B2562/0223 , A61M25/09 , G16H20/40
摘要： Methods, systems and devices for estimating the position and orientation of an invasive surgical devices, for example, a catheter guidewire or endoscope, surgical catheter, or self-guided electrophysiology catheter, relative to a reference frame, are described. An example system comprises one or more permanent magnets mounted on the surgical device, a plurality of magnetometer sensors at fixed location providing a reference frame that are configured to perform magnetic field measurements of the direct current superposition field of the permanent magnets, and computational means for receiving the input signals and calculating the position and orientation of the permanent magnets mounted on the surgical device.
-
公开(公告)号：US11766190B2
公开(公告)日：2023-09-26
申请号：US17345837
申请日：2021-06-11
申请人： CloudNav Inc.
发明人： Erik E. Anderson , Jon D. Maiara
CPC分类号： A61B5/062 , A61M25/0127 , G16H40/67 , A61B5/287 , A61B2562/0223 , A61M25/09 , G16H20/40
摘要： Methods, systems and devices for estimating the position and orientation of an invasive surgical devices, for example, a catheter guidewire or endoscope, surgical catheter, or self-guided electrophysiology catheter, relative to a reference frame, are described. An example system comprises one or more permanent magnets mounted on the surgical device, a plurality of magnetometer sensors at fixed location providing a reference frame that are configured to perform magnetic field measurements of the direct current superposition field of the permanent magnets, and computational means for receiving the input signals and calculating the position and orientation of the permanent magnets mounted on the surgical device.
-
公开(公告)号：US20210386315A1
公开(公告)日：2021-12-16
申请号：US17345837
申请日：2021-06-11
申请人： CloudNav Inc.
发明人： Erik E. Anderson , Jon D. Maiara
摘要： Methods, systems and devices for estimating the position and orientation of an invasive surgical devices, for example, a catheter guidewire or endoscope, surgical catheter, or self-guided electrophysiology catheter, relative to a reference frame, are described. An example system comprises one or more permanent magnets mounted on the surgical device, a plurality of magnetometer sensors at fixed location providing a reference frame that are configured to perform magnetic field measurements of the direct current superposition field of the permanent magnets, and computational means for receiving the input signals and calculating the position and orientation of the permanent magnets mounted on the surgical device.
-
公开(公告)号：US09891245B2
公开(公告)日：2018-02-13
申请号：US14754280
申请日：2015-06-29
申请人： CloudNav Inc.
发明人： Erik Anderson , Nathan Royer
IPC分类号： G01P21/00
CPC分类号： G01P21/00
摘要： An electronic device configured for real-time calibration of an on-board accelerometer. A plurality of acceleration measurements are collected from the accelerometer to form a data set. An accelerometer error correction model is maintained that includes bias error calibration parameters, sensitivity calibration parameters, and cross-axis calibration parameters that each specify respective weights for each of bias error, sensitivity error, and cross-axis error. Calibration values are determined for one or more of the bias error calibration parameters, the sensitivity calibration parameters, and the cross-axis error calibration parameters for the data set of acceleration measurements using the accelerometer error correction model. A true acceleration vector may be determined that corresponds to a subsequently received acceleration measurement using the determined calibration values.
-
公开(公告)号：US20240298950A1
公开(公告)日：2024-09-12
申请号：US18596975
申请日：2024-03-06
申请人： CloudNav Inc.
发明人： Jeffery DECH , Erik E. ANDERSON , Ben KOKES
CPC分类号： A61B5/243 , A61B5/6804 , A61B5/721 , A61B5/7221 , A61B5/726 , A61B2503/02 , A61B2562/0219 , A61B2562/0223
摘要： Devices, systems and methods for monitoring of fetal health through determination of fetal heart rate are described. In an example, beat-to-beat decelerations and accelerations are monitored to estimate fetal position and orientation within the womb using magnetometer sensors. The described embodiments enable long-term monitoring that can be remote from a clinical setting, and is sufficiently portable to be operable while the mother engages in substantial motion during daily activity. An example method includes receiving, from a magnetic sensor, a combined heart signal comprising a mixture of a maternal heart signal and the fetal heart signal, estimating, based on the combined heart signal, one or more parameters associated with a location/motion of the magnetic sensor, generating a de-noised combined heart signal by performing a de-noising operation on the combined heart signal, and tracking, based on the de-noised combined heart signal, an estimate of the fetal heart signal.
-
公开(公告)号：US20240023823A1
公开(公告)日：2024-01-25
申请号：US18473885
申请日：2023-09-25
申请人： CloudNav Inc.
发明人： Erik E. Anderson , Jon D. Maiara
CPC分类号： A61B5/062 , A61M25/0127 , G16H40/67 , G16H20/40
摘要： Methods, systems and devices for estimating the position and orientation of an invasive surgical devices, for example, a catheter guidewire or endoscope, surgical catheter, or self-guided electrophysiology catheter, relative to a reference frame, are described. An example system comprises one or more permanent magnets mounted on the surgical device, a plurality of magnetometer sensors at fixed location providing a reference frame that are configured to perform magnetic field measurements of the direct current superposition field of the permanent magnets, and computational means for receiving the input signals and calculating the position and orientation of the permanent magnets mounted on the surgical device.
-
公开(公告)号：US11204257B2
公开(公告)日：2021-12-21
申请号：US17240658
申请日：2021-04-26
申请人： CloudNav Inc.
发明人： Erik Anderson
IPC分类号： G01C25/00 , G01C19/5776 , G06F3/01 , G01C21/20 , G01P15/14
摘要： Devices, systems and methods for automatic calibration of rate gyroscope sensitivity are described. One exemplary method includes receiving a first plurality of measurements from a gyroscope and a second plurality of measurements from at least another sensor including at least one accelerometer, generating an orientation estimate of the device and a plurality of orientation corrections based on the first and second plurality of measurements, generating an estimate of a sensitivity of the gyroscope based on the orientation estimate, the plurality of orientation corrections and the first plurality of measurements, and calibrating at least the gyroscope based on the estimate of the sensitivity. In an example, the at least another sensor may include an accelerometer and/or a magnetometer.
-
8.发明申请公开(公告)号：US20220244074A1
公开(公告)日：2022-08-04
申请号：US17649346
申请日：2022-01-28
申请人： CloudNav Inc.
摘要： Devices and methods for automatic calibration of rate gyroscope bias are described. One example method includes receiving, while the device is in motion, a plurality of measurements from one or more sensors, including a gyroscope, in the device. In this example, the plurality of measurements is acquired over a time period. The method also includes identifying one or more time segments, within the time period, having a low motion activity of the device by comparing a computed value associated with a motion of the device to a predetermined threshold. The method further includes determining, based on one or more measurements acquired over the one or more time segments, a degree of motion metric for at least one of the one or more sensors, and determining, based on the degree of motion metric for the at least one of one or more sensors, an estimate of a bias of the gyroscope.
-
公开(公告)号：US20210318141A1
公开(公告)日：2021-10-14
申请号：US17240658
申请日：2021-04-26
申请人： CloudNav Inc.
发明人： Erik Anderson
IPC分类号： G01C25/00 , G01C19/5776 , G06F3/01 , G01C21/20 , G01P15/14
摘要： Devices, systems and methods for automatic calibration of rate gyroscope sensitivity are described. One exemplary method includes receiving a first plurality of measurements from a gyroscope and a second plurality of measurements from at least another sensor including at least one accelerometer, generating an orientation estimate of the device and a plurality of orientation corrections based on the first and second plurality of measurements, generating an estimate of a sensitivity of the gyroscope based on the orientation estimate, the plurality of orientation corrections and the first plurality of measurements, and calibrating at least the gyroscope based on the estimate of the sensitivity. In an example, the at least another sensor may include an accelerometer and/or a magnetometer.
-
公开(公告)号：US10989563B2
公开(公告)日：2021-04-27
申请号：US16452351
申请日：2019-06-25
申请人： CloudNav Inc.
发明人： Erik Anderson
IPC分类号： G01C25/00 , G01C19/5776 , G06F3/01 , G01C21/20 , G01P15/14
摘要： Devices, systems and methods for automatic calibration of rate gyroscope sensitivity are described. One exemplary method includes receiving a first plurality of measurements from a gyroscope and a second plurality of measurements from at least another sensor including at least one accelerometer, generating an orientation estimate of the device and a plurality of orientation corrections based on the first and second plurality of measurements, generating an estimate of a sensitivity of the gyroscope based on the orientation estimate, the plurality of orientation corrections and the first plurality of measurements, and calibrating at least the gyroscope based on the estimate of the sensitivity. In an example, the at least another sensor may include an accelerometer and/or a magnetometer.
-
-
-
-
-
-
-
-
-
搜索结果
12 条记录 (耗时 0.013 秒)
