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4 条记录 (耗时 0.011 秒)

    Arterial dilation device
    3.
    发明授权
    Arterial dilation device 失效
    动脉硬化装置

    公开(公告)号：US3557794A

    公开(公告)日：1971-01-26

    申请号：US3557794D

    申请日：1968-07-30

    申请人： US AIR FORCE

    发明人： PATTEN ROBERT E VAN

    IPC分类号： A61B17/22 ,  A61M29/00

    CPC分类号： A61M29/02 ,  A61B2017/22001

    摘要： An improved catheter is disclosed in which the length of the active portion of the instrument is divided longitudinally into four or more beams, preferably of rectangular cross section. The beams are constituted of spring steel and are held between two abutments on the catheter, one of which is adapted to be retracted toward the other by an actuator wire controlled by a micrometer screw. The beams are positioned independently of one another and normally rest snugly about a metal tubing so that when the abutment is caused to move the compressive force causes the beams to flex outwardly except at their ends since the tubing prevents any movement inwardly. The beams therefore execute a smooth flexing effect and define an enlarged outline which, when contained in a blood vessel, artery, etc., causes a dilation of that member. When the pull in the actuator wire is released at the micrometer screw, the beams spring back into their normal rest position to allow ready retraction of the catheter. A standard form of strain gage using the Wheatstone Bridge principle may be applied to the actuator wire to determine the counterforce exerted by the blood vessel against the deployment of the dilator.

    Adjustable hydraulic/electric hand grip dynamometer
    4.
    发明授权
    Adjustable hydraulic/electric hand grip dynamometer 失效
    可调节液压/电动手动测力计

    公开(公告)号：US3672219A

    公开(公告)日：1972-06-27

    申请号：US3672219D

    申请日：1970-11-12

    申请人： US AIR FORCE

    发明人： PATTEN ROBERT E VAN

    IPC分类号： A61B5/22 ,  G01L5/02

    CPC分类号： A61B5/22

    摘要： A hand-grip dynamometer having a main support element mounting front and back grip members in spaced relation on opposite sides thereof, and incorporating a hydraulic system interconnected with the front grip member and combined with a potentiometric pressure transducer for measuring a gripping force applied to the front grip member.