FORCE SENSING CATHETERS HAVING SUPER-ELASTIC STRUCTURAL STRAIN SENSORS
    11.
    发明申请
    FORCE SENSING CATHETERS HAVING SUPER-ELASTIC STRUCTURAL STRAIN SENSORS 审中-公开
    具有超弹性结构应变传感器的感应导管

    公开(公告)号:US20170035358A1

    公开(公告)日:2017-02-09

    申请号:US15227231

    申请日:2016-08-03

    Abstract: Various embodiments concern a system for measuring a force on a catheter. The catheter can comprise a proximal segment, a distal segment, and an intermediary segment comprising at least one strut. Each strut can extend from the proximal segment to the distal segment. Each strut can be formed from a super-elastic metal alloy material, such as nitinol. The plurality of struts can be configured to resiliently support the distal segment with respect to the proximal segment while permitting relative movement between the distal segment and the proximal segment. The system can comprise control circuitry configured to measure, for each of the plurality of struts, a change in an electrical property of the super-elastic metal alloy material of the strut when the distal segment moves relative to the proximal segment to determine a magnitude and direction of the force.

    Abstract translation: 各种实施例涉及用于测量导管上的力的系统。 导管可以包括近端段,远端段和包括至少一个支柱的中间区段。 每个支柱可以从近端段延伸到远端段。 每个支柱可以由超弹性金属合金材料形成,例如镍钛诺。 多个支柱可被构造成相对于近端段弹性地支撑远端段,同时允许远端段和近端段之间的相对运动。 所述系统可以包括控制电路,所述控制电路被配置成当所述远端段相对于所述近端段移动时,针对所述多个支柱中的每一个测量所述支柱的超弹性金属合金材料的电性质的变化,以确定大小和 方向的力量。

    Inductive double flat coil displacement sensor

    公开(公告)号:US11369431B2

    公开(公告)日:2022-06-28

    申请号:US15619432

    申请日:2017-06-09

    Abstract: A catheter adapted to measure a contact force includes a proximal segment, a distal segment, a spring segment extending from the proximal segment to the distal segment, and at least one inductive sensor. The at least one inductive sensor includes a first plate of high magnetic permeability material disposed on the proximal segment, a second plate of high magnetic permeability material disposed on the distal segment opposite the first plate, at least one first coil disposed adjacent to the first plate between the first plate and the second plate, and at least one second coil disposed adjacent to the second plate opposite the first coil between the first plate and the second plate. The second coil is electrically connected in series with the first coil. The first coil and the second coil are configured to output a signal indicative of displacement between the first coil and the second coil.

    CATHETER WITH INDUCTIVE FORCE SENSING ELEMENTS
    14.
    发明申请
    CATHETER WITH INDUCTIVE FORCE SENSING ELEMENTS 审中-公开
    带感应力传感元件的导管

    公开(公告)号:US20170035357A1

    公开(公告)日:2017-02-09

    申请号:US15230314

    申请日:2016-08-05

    Abstract: Various embodiments concerns a system for measuring a force within a body comprising a catheter, the catheter comprising at least one sensor and an element located within the catheter, the element displaceable within the catheter relative to the at least one sensor. The system further comprises control circuitry configured to measure, for each of the at least one sensor, a change in a resonance frequency of the sensor based on a change in distance between the sensor and the element, the change in distance responsive to the force. The control circuitry is further configured to calculate at least one parameter of the force based on the change in the resonance frequency, and output an indication of the at least one parameter of the force.

    Abstract translation: 各种实施例涉及用于测量包括导管的主体内的力的系统,所述导管包括至少一个传感器和位于所述导管内的元件,所述元件可相对于所述至少一个传感器在导管内移位。 所述系统还包括控制电路,所述控制电路被配置为基于所述传感器和所述元件之间的距离的变化来测量所述至少一个传感器中的每一个传感器的谐振频率的变化,所述变化响应于所述力。 控制电路还被配置为基于谐振频率的变化来计算力的至少一个参数,并输出力的至少一个参数的指示。

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