Overlapping fiber gratings
    165.
    发明授权

    公开(公告)号:US11815371B2

    公开(公告)日:2023-11-14

    申请号:US17877526

    申请日:2022-07-29

    CPC classification number: G01D5/35316 G02B6/02085

    Abstract: Described are optical fibers, e.g., for use in stress-sensing or shape-sensing applications, that use overlapping grating configurations with chirped gratings to facilitate strain delay registration. In accordance with various embodiments, a fiber core may, for instance, have two overlapping sets of chirped gratings that differ in the direction of the chirp between the first and second sets, or a set of chirped gratings overlapping with a single-frequency grating. Also described are strain sensing systems and associated computational methods employing optical fibers with overlapping gratings.

    GEARED GRIP ACTUATION FOR MEDICAL INSTRUMENTS
    167.
    发明公开

    公开(公告)号:US20230355328A1

    公开(公告)日:2023-11-09

    申请号:US18223324

    申请日:2023-07-18

    CPC classification number: A61B34/30 A61B17/00 A61B2090/031

    Abstract: An actuation mechanism for a medical instrument includes a pinion and a face gear that move a push-pull element. The pinion has a mounting that permits rotation of the pinion by an external control system such as a robot. The face gear meshes with the pinion. The push-pull element may have a proximal end coupled to the face gear and a distal end coupled to a tool at a distal end of an instrument shaft. A manipulator coupled for manual rotation of the actuation mechanism may include a slip clutch to prevent manual application of excessive force to the actuation mechanism.

    MEDICAL DEVICES HAVING COMPACT END EFFECTOR DRIVE MECHANISMS WITH HIGH GRIP FORCE

    公开(公告)号:US20230355261A1

    公开(公告)日:2023-11-09

    申请号:US18029532

    申请日:2021-09-30

    Inventor: Raymond YU

    CPC classification number: A61B17/29 A61B34/30 A61B34/71 A61B2017/2944

    Abstract: An end effector drive mechanism has first and second pulleys and first and second jaws configured as a torque-amplifying tool assemblies. Each pulley jaw pair is configured as kinematic assembly having a compact footprint that can amplify outputs to increase the grip force applied by the jaws. The end effector drive mechanism is within a pulley envelope defined by the first and second pulleys. In certain configurations, the tool assemblies are configured to produce a grip force independent from a push-pull force that is exerted on (or by) the jaws. In certain configurations, the tool assemblies are configured to prevent undesirable reverse rotations and limit the range of travel of the jaws (or pulleys).

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