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公开(公告)号：US20240295618A1
公开(公告)日：2024-09-05
申请号：US18593553
申请日：2024-03-01
CPC分类号： G01R33/288 , G16H40/20
摘要： A system and method for increased safety of an MRI system is provided. The system includes a rampable main magnet of the MRI system, a main magnet power control for ramping the magnet on and off and a safety device in communication with the main magnet power control, wherein the safety device links the main magnet power control to a safety procedure. The method includes providing a safety device in communication with a power control of a rampable main magnet of the MRI system, wherein the power control ramps the main magnet on and off, and the safety device implements a safety procedure in response to the power control of the magnet.
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公开(公告)号：US11977138B2
公开(公告)日：2024-05-07
申请号：US17174849
申请日：2021-02-12
IPC分类号： A61B5/00 , G01R33/34 , G01R33/36 , A61B5/055 , G01R33/3875 , G01R33/561 , G01R33/563
CPC分类号： G01R33/34084 , A61B5/7217 , G01R33/3657 , A61B5/055 , G01R33/3875 , G01R33/5616 , G01R33/56341 , G01R33/56366
摘要： Some implementations provide an MRI system that includes: a housing having a bore accommodating a portion of a subject; a main magnet enclosed by said housing and configured to generate a substantially uniform magnet field within the bore; a gradient sub-system to provide perturbations to the substantially uniform magnet field; a flexible coil assembly configured to (i) receive radio frequency (RF) signals from the subject in response to the portion of the subject being scanned, and (ii) generate and apply B0 shimming to improve a field homogeneity of the substantially uniform magnetic field; and a control unit configured to: drive the gradient sub-system using a gradient waveform; and receive measurement results responsive to the gradient waveform such that a coupling between the gradient sub-system and the flexible coil assembly is determined and subsequently reduced in response to the determined coupling exceeding a pre-determined threshold.
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公开(公告)号：US20240085684A1
公开(公告)日：2024-03-14
申请号：US18467564
申请日：2023-09-14
CPC分类号： G02B21/361 , G02B21/025 , G02B21/16 , G02B21/22
摘要： A visualization system and methods for simultaneously visualizing white light and visible fluorescent light, the visualization involving an illumination system and an imaging system operable with the illumination system. The illumination system has a light source produces illumination light (white light and fluorescence excitation light), an optical notch rejection filter to remove light having peak fluorescence excitation wavelengths from the illumination light, and illumination optics to at least one of deliver and condense the filtered illumination light. The imaging system has imaging optics, a fluorescence excitation light removal filter to remove excitation light from the imaged light, a beam splitter to split the filtered images light into a first beam (white light), and a second beam (fluorescent imaging light), an optical notch rejection filter to ensure that light, having peak fluorescence emission wavelengths of a fluorophore, does not reach a white light camera, an optical notch pass filter to pass only the fluorescent imaging light component, a camera to image the white light; and another camera to image the fluorescent light.
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公开(公告)号：US11890067B2
公开(公告)日：2024-02-06
申请号：US17155424
申请日：2021-01-22
发明人： Brent Andrew Bailey , Trevor James Dell , Bart Verzijlenberg , Adam Philip , Sean Dowling , Robert Lucas
IPC分类号： A61B34/30 , B25J9/02 , A61B17/29 , A61B18/14 , B25J13/08 , B25J9/16 , B25J18/00 , A61B34/20 , F16M11/06 , A61B90/00 , A61B34/10 , A61B34/00 , A61B17/32
CPC分类号： A61B34/30 , A61B17/29 , A61B18/1442 , A61B34/20 , B25J9/02 , B25J9/1633 , B25J13/085 , B25J13/088 , B25J18/007 , A61B17/32 , A61B34/10 , A61B34/25 , A61B90/361 , A61B2017/2912 , A61B2034/2055 , A61B2090/064 , A61B2090/065 , A61B2090/066 , A61B2090/374 , A61B2090/3735 , A61B2090/3762 , F16M11/06
摘要： A motion-assisted positioning arm for a medical procedure. The positioning arm includes a base, an arm coupled to the base, and an end effector coupled to the arm. The arm includes a plurality of arm segments. The arm includes a plurality of joints for connecting the arm segments. The end effector may be manipulable with six degrees of freedom in a task-coordinate space based on motion by at least one joint in the plurality of joints. The positioning arm includes a processor to: detect manipulation of and determine forces or torques acting on the end effector; determine a surgical mode for constraining movement of the end effector in the task-coordinate space; determine an end effector velocity based on the determined forces or torques and the surgical mode for moving end effector; and apply at least one joint space movement based on the end effector velocity.
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公开(公告)号：US11826208B2
公开(公告)日：2023-11-28
申请号：US17094768
申请日：2020-11-10
发明人： Michael Frank Gunter Wood , Cameron Anthony Piron , Tammy Kee-Wai Lee , Kamyar Abhari , Kai Michael Hynna
CPC分类号： A61B90/361 , A61B1/00188 , A61B1/00193 , A61B1/045 , A61B34/20 , A61B90/20 , A61B90/30 , A61B90/37 , A61B90/14 , A61B90/39 , A61B2034/2051 , A61B2034/2055 , A61B2090/306 , A61B2090/365 , A61B2090/367 , A61B2090/371 , A61B2090/374 , A61B2090/376 , A61B2090/378 , A61B2090/3735 , A61B2090/3762
摘要： A surgical imaging system is described. The system includes first and second optical assemblies. Each optical assembly defines a respective optical axis, and each includes a respective set of one or more optics for adjusting field-of-view (FOV) and focus and a respective camera for capturing an image. The system includes a controller for controlling the optical assemblies and for switching the surgical imaging system between a coupled configuration and an uncoupled configuration. In the coupled configuration, the first optical assemblies are controlled to adjust the respective sets of optics and/or the respective optical axes in dependence on each other. In the uncoupled configuration, the optical assemblies are controlled to adjust the respective sets of optics, and the respective optical axes independently of each other.
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公开(公告)号：US11821970B2
公开(公告)日：2023-11-21
申请号：US17645108
申请日：2021-12-20
发明人： Geron André Bindseil , Ian Robert Oliphant Connell , William Bradfield Handler , Chad Tyler Harris
IPC分类号： G01R33/385
CPC分类号： G01R33/3856 , G01R33/3858
摘要： A coil apparatus and methods for magnetic resonance imaging involving a wire winding, the wire winding having at least one of: a hollow cross-section wire and a solid cross-section wire, the solid cross-section wire having at least one of: a solid small cross-section wire and a solid large cross-section wire, the solid large cross-section wire having a thickness greater than that of the solid small cross-section wire, and the solid small cross-section wire disposed in one of adjacent and proximate at least one of the hollow cross-section wire and the solid large cross-section wire, whereby at least one of current density, winding density, and heat extraction are increasable.
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公开(公告)号：US11712307B2
公开(公告)日：2023-08-01
申请号：US17302709
申请日：2021-05-11
发明人： Kirusha Srimohanarajah , Dorothy Lui , Gal Sela
CPC分类号： A61B34/20 , A61B5/00 , A61B5/06 , A61B5/064 , A61B34/10 , A61B90/39 , A61B2034/107 , A61B2034/2055 , A61B2090/364 , A61B2090/3983 , A61B2090/502
摘要： An apparatus is provided that is visible by both a three dimensional (3D) scanner system of a medical navigation system and a camera of the medical navigation system. The apparatus involves a rigid member and a plurality of markers attached to the rigid member. Each of the plurality of markers includes a reflective surface portion visible by the camera and a distinct identifiable portion visible by the 3D scanner system. The apparatus further involves a connector mechanism to connect the apparatus to a reference location. The apparatus is in a field of view of the 3D scanner system and the camera within a timeframe of the 3D scan.
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公开(公告)号：US11707204B2
公开(公告)日：2023-07-25
申请号：US15762853
申请日：2015-10-06
CPC分类号： A61B5/055 , G01R33/50 , G01R33/5608 , G01R33/56341 , A61B34/20 , A61N1/0534
摘要： A method of imaging an implant device in a computing device is provided. The computing device includes a processor interconnected with a memory and a display. The method includes, at the processor: obtaining a first magnetic resonance (MR) image of a patient tissue, the first MR image containing a first magnetic field strength indicator; responsive to the implant device being inserted in the patient tissue, obtaining a second MR image of the patient tissue, the second MR image containing a second magnetic field strength indicator smaller than the first magnetic field strength indicator; registering the second MR image with the first MR image; generating a composite image from the first MR image and the second MR image; and presenting the composite image on the display.
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公开(公告)号：US11686795B2
公开(公告)日：2023-06-27
申请号：US17369924
申请日：2021-07-07
IPC分类号： G01V3/00 , G01R33/3875 , G01R33/48
CPC分类号： G01R33/3875 , G01R33/4828
摘要： A fat saturation method for a magnetic resonance imaging system having a main magnet providing a magnetic field B0 The method includes: driving a shim coil assembly with a first set of shimming currents to sufficiently alter a B0 field inhomogeneity of the magnetic field B0 within a region that includes a first imaging volume of interest such that water saturation inside the region is reduced from before the first set of shimming currents are applied; applying a fat saturation pulse to the region; identifying the first imaging volume of interest from the region; driving the shim coil assembly with a second set of shimming currents to alter the B0 field inhomogeneity of the magnetic field B0 within the first imaging volume of interest such that the B0 field inhomogeneity within the first imaging volume of interest is reduced; and obtaining magnetic resonance signals from the first imaging volume of interest.
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公开(公告)号：US11668775B2
公开(公告)日：2023-06-06
申请号：US17362005
申请日：2021-06-29
CPC分类号： G01R33/3621 , G01R33/34076 , G01R33/3614
摘要： A coil assembly includes: a radio frequency (RF) coil operable to be placed over a portion of a subject; a quarter-wave transformer coupled to the RF coil and configured to transform a characteristic impedance of the RF coil; and a diode placed behind the quarter-wave transformer and away from the RF coil, wherein the diode is operable to: (i) when the diode is forward biased, the diode turns the quarter-wave transformer into an open circuit such that the power amplifier drives the RF coil with sufficient electrical power for the RF coil to transmit an RF pulse into the portion of the subject; and (ii) when the diode is provided zero or revers bias, the diode turns the quarter-wave transformer into a short circuit such that the RF coil is detuned from a Lamor frequency of nuclei of interest immersed in the main magnet.
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