公开(公告)号：US20200350846A1

公开(公告)日：2020-11-05

申请号：US16864794

申请日：2020-05-01

Applicant: Canon U.S.A., Inc.

Inventor： Badr Elmaanaoui ,  Alexander Altshuler ,  Pierre-Yves Mabboux

IPC: H02P23/24

Abstract: System, apparatus, and methods for controlling a motor by using servo-to-edge direction feedback are disclosed. An exemplary apparatus comprises: a fiber optic rotary junction (FORJ) having a rotatable portion; a motor to rotate the rotatable portion; a connector to connect the rotatable portion to a rotatable fiber of an imaging probe; a sensor positioned in close proximity to a target and configured to output a signal indicative of which one of at least two distinguishable regions of the target is proximal to the sensor; and a controller configured to control the rotational direction of the motor based on the sensor signal. In one embodiment, the motor is a servo-motor, and the rotation of the motor and/or rotatable portion is controlled by a servo-loop to change the rotation direction of the motor back-and-forth around a predetermined rotational position without the use of an encoder.

公开(公告)号：US10678044B2

公开(公告)日：2020-06-09

申请号：US15684287

申请日：2017-08-23

Applicant: Canon U.S.A., Inc.

Inventor： Alexander Altshuler ,  Badr Elmaanaoui

IPC: G02B26/00 ,  G02B26/08 ,  G02F1/29 ,  G02B23/24 ,  G02B26/10 ,  G01B9/02

Abstract: A rotation-free beam-steering device for manipulating probing and reflected optical beams includes at least one electrowetting cell having at least one side wall defining an inner space. The at least one side wall has a lining adjacent to the inner space. A liquid at least partially fills the inner space. The liquid has at least one controlled surface not in contact with the wall lining. The liquid further has a contact angle with the wall lining. The at least one controlled surface is disposed to interface with an optical beam exiting from a distal end of an optical fiber at an incidence angle. At least two electrodes are provided separated from the inner space by the lining. An electrical potential on the at least two electrodes is controlled to adjust the contact angle of the liquid bounding the at least one controlled surface.

公开(公告)号：US20190099079A1

公开(公告)日：2019-04-04

申请号：US15724003

申请日：2017-10-03

Applicant: Canon U.S.A., Inc.

Inventor： Daisuke Yamada ,  Jeffrey Chen ,  Badr Elmaanaoui

IPC: A61B5/00

Abstract: A multimodality system includes first and second modalities, a catheter, and a processor. The catheter collects fluorescent light from a plurality of locations of a sample which has been irradiated with excitation light of the second modality; a detector detects intensity of the fluorescent light received from the plurality of locations as a function of an angle α formed between the normal to the sample surface and the optical axis of the excitation light. A processor calculates the angle α at each of the plurality of locations based on radiation of the first modality incident on the sample, and corrects the intensity of the detected fluorescent light using a calibration factor g(α). The calibration factor g(α) is a function of the angle α calculated at two or more of the plurality of locations. The angle α is composed of a transversal angle αt and an axial angle αa.

公开(公告)号：US20170360398A1

公开(公告)日：2017-12-21

申请号：US15628093

申请日：2017-06-20

Applicant: Canon U.S.A. Inc.

Inventor： Mark Alan Hamm ,  Bin Wu ,  Albert Dunfee ,  Badr Elmaanaoui

IPC: A61B8/00 ,  G01S7/52 ,  G01S15/89 ,  A61B8/12

CPC classification number: A61B8/4254 ,  A61B8/12 ,  A61B8/445 ,  A61B8/4461 ,  G01S7/5205 ,  G01S15/894

Abstract: Exemplary probes including longitudinal marker elements arranged parallel to the probe axis are provided for reducing or eliminating non-uniform rotational distortions (NURD) in imaging systems. Additional ring marker elements may also be provided to reduce or eliminate non-uniform linear distortion (NULD). These probes, as well as systems and methods of use provide for images having better image quality and reduced NURD.

公开(公告)号：US12121205B2

公开(公告)日：2024-10-22

申请号：US17493184

申请日：2021-10-04

Applicant: CANON U.S.A., INC.

Inventor： Matthew Scott Pias ,  Badr Elmaanaoui

IPC: A61B1/00 ,  A61B1/04 ,  A61B1/06 ,  A61B1/313 ,  A61B5/00

CPC classification number: A61B1/00057 ,  A61B1/0005 ,  A61B1/043 ,  A61B1/0638 ,  A61B1/3137 ,  A61B5/0066

Abstract: A method and system for calibrating fluorescence data in a multimodality image acquired from a vessel imaged by an imaging catheter. A fluorescence signal acquired by a first modality is calibrated by applying a first calibration factor based on a lumen distance and/or radiation angle from the catheter to the vessel wall. If a parameter of the calibrated fluorescence signal is different from a predetermined condition, a user is prompted to manually select a lumen boundary and/or a region of interest (ROI) on the image of the vessel. An optical attenuation property of the selected boundary and/or ROI is calculated based on backscattered radiation collected by a second modality, and the fluorescence signal is further calibrated by applying a second calibration factor based on the optical attenuation property.

公开(公告)号：US12112488B2

公开(公告)日：2024-10-08

申请号：US17381048

申请日：2021-07-20

Applicant: Canon U.S.A., Inc.

Inventor： Badr Elmaanaoui ,  James Hastings Houskeeper

IPC: G06T7/30 ,  A61B5/00 ,  A61B34/20

CPC classification number: G06T7/30 ,  A61B5/0066 ,  A61B5/0071 ,  A61B5/0075 ,  A61B34/20 ,  G06T2207/10064 ,  G06T2207/10101 ,  G06T2207/30004

Abstract: One or more devices, systems, methods, and storage mediums for performing image synchronization using one or more imaging modalities are provided herein. Examples of applications include imaging, evaluating and diagnosing biological objects, such as, but not limited to, for Gastro-intestinal, cardio and/or ophthalmic applications, and being obtained via one or more optical instruments, such as, but not limited to, optical probes, catheters, capsules and needles (e.g., a biopsy needle). Devices, systems, methods, and storage mediums may include or involve a method, such as, but not limited to, for performing image synchronization.

公开(公告)号：US20240029305A1

公开(公告)日：2024-01-25

申请号：US17870681

申请日：2022-07-21

Applicant: Canon U.S.A., Inc.

Inventor： Badr Elmaanaoui

IPC: G06T7/80 ,  G06T7/00

CPC classification number: G06T7/80 ,  G06T7/0012 ,  G06T2207/10101

Abstract: One or more devices, systems, methods, and storage mediums for performing self-diagnosis using one or more imaging modalities are provided herein. Examples of applications include imaging, evaluating and diagnosing biological objects, such as, but not limited to, for Gastro-intestinal, cardio and/or ophthalmic applications, and being obtained via one or more optical instruments, such as, but not limited to, optical probes, catheters, capsules and needles (e.g., a biopsy needle). Devices, systems, methods, and storage mediums may include or involve a method, such as, but not limited to, for determining status or health (such as optical health) of a rotary joint of an apparatus/system and/or of the apparatus/system. A device, system, method, or storage medium may perform self-diagnosis or diagnosis to minimize, reduce, and/or avoid optical failures, rotary joint failures, or apparatus/system failures and to have a robust method(s) of determining the health of the rotary joint and/or the apparatus or system.

公开(公告)号：US20230015390A1

公开(公告)日：2023-01-19

申请号：US17378476

申请日：2021-07-16

Applicant: Canon U.S.A., Inc.

Inventor： Badr Elmaanaoui

IPC: A61B5/00 ,  G01B9/02

Abstract: Devices, systems, and methods perform operations that include the following: obtaining a reflectance-detection signal from a back-reflected-light detector, wherein the back-reflected-light detector is configured to detect back-reflected excitation light and generate the reflectance-detection signal based on the back-reflected excitation light; determining whether blood clearance has been achieved based on the reflectance-detection signal; and issuing a clearance indicator in response to determining that blood clearance has been achieved.

公开(公告)号：US11375881B2

公开(公告)日：2022-07-05

申请号：US16270304

申请日：2019-02-07

Applicant: CANON U.S.A., INC.

Inventor： Mark Alan Hamm ,  Albert Harold Dunfee ,  Badr Elmaanaoui

IPC: A61B1/00 ,  A61B5/00 ,  A61B90/00 ,  A61B1/04 ,  A61M25/01 ,  A61M25/06 ,  A61B6/00 ,  A61B6/12 ,  A61B8/12

Abstract: An apparatus includes an elongate member having proximal and distal portions; a rotatable drive cable disposed within the elongate member, the drive cable being connectable to a mechanism to which torque can be applied; and a control assembly mechanically coupled to the drive cable, and configured to disengage the mechanism from the drive cable when the applied torque exceeds a predetermined level, wherein disengagement of the mechanism from the drive cable causes rotation of the drive cable to stop or withdrawal of the drive cable.

公开(公告)号：US11224336B2

公开(公告)日：2022-01-18

申请号：US16184832

申请日：2018-11-08

Applicant: CANON U.S.A., INC.

Inventor： Alexander Altshuler ,  Badr Elmaanaoui ,  Seiji Takeuchi

IPC: A61B1/07 ,  G02B6/42 ,  H04N5/225 ,  A61B5/00 ,  A61B1/00 ,  A61B1/06 ,  A61B8/12 ,  A61B1/04 ,  A61B3/12 ,  A61B8/00

Abstract: One or more devices, systems, methods and storage mediums for characterizing, examining and/or diagnosing, and/or measuring viscosity of, a sample or object are provided herein. Such information may be obtained in application(s) using a system that includes a rotary junction, an elongated extender or at least one repeater attached to the rotary junction and a rotatable probe attached to the elongated extender and/or the at least one repeater. Examples of such applications include imaging, evaluating and diagnosing biological objects, such as, but not limited to, for Gastro-intestinal, cardio and/or ophthalmic applications, and being obtained via one or more optical instruments. The extenders and/or repeaters may be used with one or more forms of imaging, such as, but not limited to, Spectrally Encoded Endoscopy (“SEE”) and Optical Coherence Tomography (“OCT”).