摘要:
A distal side link hub (15) is connected with a proximal end side link hub (14) through three sets of link mechanisms (11 to 13) for alteration in posture. At least two sets of the link mechanisms include an actuator (30) for arbitrarily changing the posture of the distal end side link hub (15) relative to the proximal end side link hub (14) by rotating a proximal side end link member (11a to 13a) and a reduction gear unit (31) for reducing the speed of and transmitting the operation amount of the actuator (30) to the proximal side end link member (11a to 13a). The reduction gear unit (31) includes a geared speed reducing section (33) having a small gear (36) rotated by the actuator (30) and a large gear (37) provided in the proximal side end link member (11a to 13a). The radius of pitch circle of the large gear (37) is chosen to be equal to or greater than the arm length (L) of the proximal side end link member (11a to 13a).
摘要:
A remote controlled actuator includes an elongated guide section (3) of a curved shape, a distal end member (2) fitted to a tip of the guide section for alteration in attitude, and a work tool (1) provided in the distal end member. A drive shaft (22) for transmitting a driving force of a work tool drive source (41) to the work tool and a curved guide hole (30a) extending to its opposite ends are accommodated inside the guide section. A wire-like attitude altering member (31) is inserted within the guide hole for selective advance or retraction and then is driven by an attitude altering drive source (42) to alter the attitude of the distal end member. The attitude altering member has a curved shape identical with the curved shape of the guide hole under a natural condition while it has not yet been inserted into the guide hole.
摘要:
A remote controlled actuator includes an elongated spindle guide section (3) and a distal end member (2) fitted to a distal end thereof for alteration in attitude. The distal end member rotatably supports a spindle (13) for holding a tool (1). The spindle guide section includes a rotary shaft (22) for transmitting rotation of a tool rotation drive source (41) to the spindle. An attitude altering member (31) inserted in a guide hole (30a) is selectively advanced or retracted by an attitude control drive source (42). An initial attitude hold control unit (53a) controls the attitude control drive source so that an initial attitude holding force (F0) necessary to maintain the distal end member in the initial attitude can be applied to the attitude altering member. An attitude alteration control unit (53b) controls the attitude control drive source so that the attitude of the distal end member can be altered by a force (F5) larger than the initial attitude holding force.
摘要:
A master (210) includes an externally operated manipulation unit (323). The master (210) transmits, upon detection of an amount of operation of a catheter (50) and a delivery wire (70) by the manipulation unit (323), the detected amount of operation to a slave (120). The slave (120) includes an actuator (124) applying a force in a longitudinal axial direction to a delivery wire (70) or the like according to the applied driving amount to move the delivery wire. The manipulation unit (323) includes a secondary catheter manipulation unit (14M) and a delivery wire manipulation unit (13M) for operating a catheter (50) and a delivery wire (70) individually, arranged in close proximity at the surface of a casing of the master (210).
摘要:
A drive device for driving a linear body (1) having flexibility includes a first roller (3), a motor (4) for feeding the linear body (1) in a direction of extension of the linear body (1) by directly transmitting rotation force to the first roller (3) to rotate the first roller (3), a motor drive portion (7) for driving the motor (4) by supplying a current to the motor (4), and a control unit (8) for calculating force applied to the linear body (1) in the direction of extension based on the current supplied to the motor (4).