JP2012065975A - Medical manipulator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a medical manipulator that can smoothly perform the operation and technique of a distal end operating part by suitably wiring a current-carrying cable for using the manipulator as an electric cautery.SOLUTION: The manipulator 10 includes the distal end operating part 12 that can be rotationally operated in a roll direction centering on at least an axial direction by a gear body 126 or the like drivenly rotated by forward/backward driving of a wire 80b. The distal end operating part 12 includes, on its distal end side, a gripper member 308 capable of energizing a living body by being energized from a high frequency power supply 23 through a flexible first cable E1. The gripper member 308 is supported to be rotatable in the roll direction by a distal end support member 161 rotatable in the roll direction, and the first cable E1 is wired to be slidable on the outer peripheral surface 161b of the distal end support member 161 from the base end side of the distal end operating part 12 to the gripper member 308 through a cable guide 404.

Description

  The present invention relates to a medical manipulator that operates a distal end working unit via a power transmission member, and more particularly to a medical manipulator having an electrode member capable of energizing a living body in the distal end working unit.

  In endoscopic surgery (also called laparoscopic surgery), a plurality of holes are made in a patient's abdomen, etc., and a trocar (tubular instrument) is inserted as a passing port of the instrument, and then a shaft is provided. The distal end of the forceps is inserted into a body cavity through a trocar and the affected area is operated. A gripper, a scissors, an electric scalpel blade, and the like are attached to the distal end of the forceps as a working unit for gripping a living tissue.

  As forceps inserted from a trocar, in addition to general forceps that do not have a joint in the working portion at the tip, forceps having a plurality of joints in the working portion, a so-called manipulator has been developed (for example, Patent Document 1). reference). According to such a manipulator, an operation with a high degree of freedom is possible in the body cavity, the procedure is easy, and the number of applicable cases increases.

  The manipulator has a working unit including a distal end working unit (also referred to as an end effector) provided at the distal end of an elongated shaft, and an actuator that drives the distal end working unit by a wire is provided in the main body (operation unit). Yes. Then, by driving the actuator, a rotating operation in the roll direction centering on the axial direction and a swinging operation in the yaw (pitch) direction intersecting the axial direction can be applied to the distal end working unit via the wire. it can.

JP 2004-105451 A

  By the way, when using forceps used for laparoscopic surgery etc. as an electric knife, connect the power supply to the terminal provided near the operation unit, extend the electric wire and work parts such as gripper, blade and hook at the tip Is energized to perform the desired treatment.

  On the other hand, even when the manipulator as described above is used as an electric knife, it is necessary to energize a predetermined high voltage from the operation unit side to the distal end operation unit side as in the case of normal forceps. It is conceivable to wire an electric wire (cable) with insulation coating from the base end to the tip end.

  However, since the tip operating part of the manipulator performs a rotating operation in the roll direction and a swinging operation in the yaw direction, the cable must be bent with sufficient margin to prevent the cable from being twisted during the operation. As a result, it is envisaged that the flexed cable will interfere with the body during the procedure.

  The present invention has been made in consideration of such a problem, and can appropriately route a current-carrying cable for using the manipulator as an electric knife to smoothly perform the operation and procedure of the distal end working unit. An object is to provide a medical manipulator.

  The medical manipulator according to the present invention is provided on a hollow shaft (18), a plurality of power transmission members (80a, 80b) inserted into the shaft (18), and one end of the shaft (18). A drive mechanism (14, 32) for driving the power transmission member (80a, 80b) to advance and retreat in the axial direction; and the other end side of the shaft (18), and the advance / retreat of the power transmission member (80b). A medical manipulator comprising: a distal end working unit (12, 12a to 12c) capable of rotating in at least a roll direction centered on an axial direction by a plurality of rotating bodies driven to rotate by driving, The distal end working unit (12, 12a to 12c) is connected to the distal end side from a power source (23) connected to the drive mechanism unit (14, 32) side via a flexible first cable. The first electrode member (308) capable of energizing the living body, and the first electrode member (308) is supported by the tip support member (161) rotatable in the roll direction. The first cable (E1) is supported so as to be rotatable in the roll direction, and the distal end support member (161) extends from the proximal end side of the distal end working unit (12) to the first electrode member (308). The distal end working part (12) is further slidably wired on the outer peripheral surface (161b) of the first end cable (E1) on the outer peripheral surface (161b) of the distal end support member (161). It has the cable guide (404, 430, 431, 440, 441, 450, 451) supported slidably.

  According to such a configuration, in the distal end working unit, the first cable is slidably wired on the outer peripheral surface of the distal end support member that supports the first electrode member and is rotatable in the roll direction. And a cable guide for slidably supporting the first cable on the outer peripheral surface. As a result, when the distal end working portion is rotated in the roll direction, the first cable is supported properly while being guided between the proximal end binding portion and the distal end binding portion under the sliding action of the cable guide. It slides on the outer peripheral surface of the member. Therefore, the rotation of the distal end working unit in the roll direction is prevented from being obstructed by the first cable, the smooth operation thereof is ensured, and the bent cable is prevented from jumping out. Thus, it is possible to smoothly operate the distal end working portion and perform the procedure smoothly. Note that the reference numerals in parentheses are appended to the reference numerals in the accompanying drawings for easy understanding of the present invention, and the present invention is not construed as being limited to the reference numerals. The same applies hereinafter.

  The distal end working unit (12, 12a to 12c) has a second electrode member (309) capable of energizing a living body with the first electrode member (308) on the distal end side, and the second electrode The member (309) can be energized from the power source (23) via a second cable (E2) insulated from the first cable (E1), and the first electrode member (308) and the second electrode (308) can be energized. The electrode member (309) is supported by the tip support member (161) rotatable in the roll direction so as to be integrally rotatable in the roll direction, and the first cable (E1) and the second cable (E1). The cable (E1) is connected to the outer peripheral surface (161b) of the distal end support member (161) from the proximal end side of the distal end working portion (12) to the first electrode member (308) and the second electrode member (309). The top is slidably wired and front Cable guides (404, 430, 431, 440, 441, 450, 451) are arranged on the outer peripheral surface (161b) of the tip support member (161), and the first cable (E1) and the second cable (E2). If the medical manipulator is used as a bipolar electric knife, the cable can be accommodated appropriately.

  It has a dummy cable slidably wired on the outer peripheral surface (161b) of the tip support member (161), and the cable guides (404, 430, 431, 440, 441, 450, 451) When the medical manipulator is slidably supported while maintaining the relative positional relationship between the first cable (E1) and the dummy cable on the outer peripheral surface (161b) of the support member (161), the medical manipulator is monopolar. Even when used as an electric knife, the cable can be properly accommodated.

  The medical manipulator according to the present invention is provided on a hollow shaft (18), a plurality of power transmission members (80a, 80b) inserted into the shaft (18), and one end of the shaft (18). A drive mechanism (14, 32) for driving the power transmission member (80a, 80b) to advance and retreat in the axial direction; and the other end side of the shaft (18), and the advance / retreat of the power transmission member (80b). A medical manipulator comprising a distal end working unit (12, 12a to 12c) capable of rotating in at least a roll direction centering on an axial direction by a plurality of rotating bodies driven to rotate by driving, wherein the distal end The operating parts (12, 12a to 12c) are flexible and insulated from the power source (23) connected to the driving mechanism part (14, 32) side at the tip side. By being energized through the cable (E1) and the second cable (E2), respectively, a pair of electrode members (308, 309) capable of energizing a living body between them are provided. The pair of electrode members (308, 309) ) Is supported by the tip support member (161) rotatable in the roll direction so as to be integrally rotatable in the roll direction, and the first cable (E1) and the second cable (E1). Is slidably wired on the outer peripheral surface (161b) of the distal end support member (161) from the proximal end side of the distal end working portion (12) to the pair of electrode members (308, 309). The operating portion (12) further slides while maintaining the relative positional relationship between the first cable (E1) and the second cable (E2) on the outer peripheral surface (161b) of the tip support member (161). Movement And having a cable guide (404,430,431,440,441,450,451) for supporting the ability.

  According to such a configuration, the distal end working unit supports the pair of electrode members, and slides the first cable and the second cable on the outer peripheral surface of the distal end support member that is rotatable in the roll direction. A cable guide is provided that is movably wired and that is slidably supported while maintaining the relative positional relationship between the first cable and the second cable on the outer peripheral surface. As a result, when the distal end working portion is rotated in the roll direction, the first cable and the second cable are positioned relative to each other between the proximal end binding portion and the distal end binding portion under the sliding action of the cable guide. Is held on the outer peripheral surface of the tip support member. Therefore, the rotation in the roll direction of the distal end working unit is prevented from being disturbed by the first cable or the like, and its smooth operation is ensured, and the cable bent to the outside is also prevented from jumping out. The tip operation unit can be operated smoothly in the body, and the procedure can be performed smoothly.

  In this case, the distal end side of the first cable (E1) and the second cable (E2) from the cable guide (404, 430, 431, 440, 441, 450, 451) is connected to the distal end support member (161). The second bundling portion (408b) provided on the cable holding member (402) which is held by the provided first bundling portion (418) and the proximal end side from the cable guide (404) does not rotate in the roll direction. It is good also as a structure hold | maintained.

  The cable guide (404) is slidably disposed on the outer peripheral surface (161b) of the tip support member (161), and a ring member (notch portion (414) formed in part in the circumferential direction ( 404), and the first cable (E1) and the second cable (E2) pass from the one side surface (404c) to the other side surface (404d) of the ring member (404) through the notch (414). , And along each of the opposing side surfaces (404a, 404b) of the notch (414), the first cable and The cable guide can be slid smoothly together with the second cable.

  In this case, while surrounding the first cable (E1), the second cable (E2) and the ring member (404) disposed on the outer peripheral surface (161b) of the tip support member (161), When a cable cover (406) that slidably holds the first cable (E1) and the second cable (E2) wired along the side surface of the ring member (404) on the inner surface thereof is provided, The cable and the second cable can be stored more reliably, and the cable can be more reliably prevented from jumping out and bent.

  The cable guides (430, 431) are slidably disposed on the outer peripheral surface (161b) of the tip support member (161), and the first cable (E1) and the second cable (E2) are inserted therethrough. The first cable (E1) and the second cable (E2) through the hole (430a, 431a) and the first bundling part (418). It is good also as a structure wired between 2nd binding parts (408a). Then, since the first cable and the second cable can be held by the hole, it is possible to slide the outer peripheral surface of the tip support member more smoothly while maintaining the relative positional relationship between them. it can.

  The cable guides (440, 441, 450, 451) are slidably disposed on the outer peripheral surface (161b) of the tip support member (161), and the first cable (E1) and the second cable ( E2) is a ring member (440, 441, 450, 451) in which a hole (430a, 431a) or a groove (450a, 451a) can be inserted, and the first cable (E1) and the second cable (E2) passes from one circumferential surface (404c) to the other lateral surface (404d) of the ring member (440, 441, 450, 451) through the hole (430a, 431a) or the groove (450a, 451a). It is good also as a structure wired along. Also by this, since the first cable and the second cable can be held by the hole and the groove, the relative positional relationship between the two can be more smoothly held, and the tip support member can be slid on the outer peripheral surface. Can be moved.

  The pair of electrode members (308, 309) are pivotally supported by a shaft member (196) provided on the tip support member (161) so as to be openable and closable with each other, and are further fixed to the tip support member (161). Thus, the pair of energization members (311) that are not interlocked with the opening / closing operation of the pair of electrode members (308, 309) and are in contact with the pair of electrode members (308, 309) so as to be energized respectively. And when the first cable (E1) and the second cable (E2) are connected to the pair of current-carrying members (311), the first cable and the second cable are opened and closed by the electrode member. Can be reliably prevented from twisting.

  Further, the distal end working portion (12, 12a to 12c) further includes a yaw that intersects in the axial direction by a swing shaft (112) provided on a proximal end side with respect to the pair of electrode members (308, 309). The rocking motion can be performed in a direction or a pitch direction, and the rocking motion is driven by a pair of power transmission members (80a) that advance and retreat in opposite directions among the plurality of power transmission members (80a). When the first cable (E1) and the second cable (E2) are partly fixed to the pair of power transmission members (80a), respectively, in the yaw direction or the pitch direction of the distal end working unit. Since the first cable and the second cable can be moved back and forth together with the power transmission member that moves forward and backward with the swinging motion of the first cable, the first cable and the second cable are swung in the yaw direction or the pitch direction. Can be effectively avoided that the cable results in a deflection or torsion.

  According to the present invention, the first cable is slidably wired on the outer peripheral surface of the tip support member that supports the first electrode member and is rotatable in the roll direction. A cable guide for slidably supporting the first cable is provided at the distal end working portion. As a result, the roll rotation of the distal end working unit is prevented from being obstructed by the first cable, the smooth operation thereof is ensured, and the bent cable is prevented from jumping out to the outside. The operation unit can be operated smoothly, and the procedure can be performed smoothly.

It is a perspective view of the manipulator concerning one embodiment of the present invention. It is a partial cross section side view of a manipulator in the state where a work part and an operation part were separated. 3A is a partially omitted bottom view of the operation unit, and FIG. 3B is a partially omitted plan view of the working unit. It is a partially omitted cross-sectional plan view of a working part. FIG. 4 is a partially omitted perspective view of a composite input unit and its peripheral part of a manipulator. It is a model side view of a front-end | tip operation | movement part when fully pulling a trigger lever. It is a model side view of a front-end | tip operation | movement part when a trigger lever is pushed out. It is a schematic structure figure of a tip operation part. It is a perspective view of a front-end | tip operation | movement part. It is a bottom view of a front-end | tip operation | movement part. It is a bottom view in the state where a tip operation part was rocked in a yaw direction by a joint part. It is a principal part enlarged bottom view in the state where the tip operation part was rotated in the roll direction. It is a disassembled perspective view of a front-end | tip operation | movement part. It is a partial exploded perspective view which shows the wiring structure of a front-end | tip operation | movement part. It is side surface sectional drawing of a front-end | tip operation | movement part. It is a top sectional view of a tip operation part in the state where a gripper was closed. It is a top sectional view of a tip operation part in the state where a gripper was opened. FIG. 18A is an explanatory diagram schematically illustrating a cable wiring structure between the proximal end binding portion and the distal end binding portion in a state where the cable guide and its peripheral portion are developed in the circumferential direction, and FIG. It is explanatory drawing in the state which the front-end | tip operation | movement part performed roll axis | shaft operation | movement from the state shown in FIG. It is a schematic structure figure which shows a part of gripper drive mechanism. It is a schematic cross-sectional top view of the connection location of the edge part of a passive wire. 21A is an enlarged exploded perspective view of a main part showing a wiring structure of a distal end working unit according to a first modification, and FIG. 21B is an enlarged exploded perspective view of a main part showing another configuration example of the cable guide shown in FIG. 21A. It is. 22A is a main part enlarged exploded perspective view showing the wiring structure of the distal end working unit according to the second modification, and FIG. 22B is a main part enlarged exploded perspective view showing another configuration example of the cable guide shown in FIG. 22A. It is. FIG. 23A is an enlarged exploded perspective view of a main part showing a wiring structure of a distal end working unit according to a third modification, and FIG. 23B is an enlarged exploded perspective view of a main part showing another configuration example of the cable guide shown in FIG. 23A. It is. 1 is a schematic perspective view of a surgical robot system in which a manipulator according to an embodiment is connected to a tip of a robot arm.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of a medical manipulator according to the invention will be described with reference to the accompanying drawings.

1. Description of Overall Configuration of Manipulator As shown in FIG. 1, a manipulator (medical manipulator) 10 according to an embodiment of the present invention grips a part of a living body with a distal end working unit 12 provided at the distal end of a shaft 18. A medical electric knife that can be peeled off or touched with a living body to perform a predetermined heat treatment. A medical instrument called a grasping forceps or a peeling forceps is configured as an electric knife.

  In the following description, the width direction in FIG. 1 is defined as the X direction, the height direction is defined as the Y direction, and the extending direction of the shaft 18 is defined as the Z direction. Further, the right side is defined as the X1 direction, the left side is defined as the X2 direction, the upper direction is defined as the Y1 direction, and the lower direction is defined as the Y2 direction. Further, the front (tip side) of the shaft 18 is defined as the Z1 direction and the rear ( The base end side) is defined as the Z2 direction. Unless otherwise specified, the description of these directions is based on the case where the manipulator 10 is in the reference posture (neutral posture). These directions are for convenience of explanation, and it is a matter of course that the manipulator 10 can be used in any direction (for example, upside down).

  The manipulator 10 includes an operation unit 14 that is manually held and operated, and a work unit 16 that is detachable from the operation unit 14. A connection cable 28 that extends from the lower end of the grip handle 26 is connected to the controller 29. The manipulator system is configured.

  Such a manipulator 10 is connected to a predetermined high-frequency power source 23 by an electrode plug 21 mounted on the operation unit 14 side, and extends from an electrode rod 71 (see FIG. 2) to which the electrode plug 21 is mounted. It functions as a bipolar electric knife (bipolar gripping forceps, bipolar peeling forceps) capable of energizing the distal end working unit 12 side by E1 and the second cable E2 and thereby performing heat treatment of the affected part. The first cable E1 and the second cable E2 (hereinafter also collectively referred to as “cable E”) may be flexible electric wires (insulation-coated electric wires) in which conductive wires are insulated and coated. An electric wire with an appropriate specification may be used in consideration of compatibility.

  As shown in FIGS. 1 and 2, the operation unit 14 is configured in a substantially L shape extending in the Z1 direction and the Y2 direction, and includes a pair of upper covers 25a and 25b divided substantially symmetrically in the Z direction. As a grip handle 26, a drive part (actuator part) 30 and the like are accommodated therein, and a portion extending in the Y2 direction on the base end side is gripped by a hand. The grip handle 26 has a length suitable for being manually gripped, and the composite input section 24 is provided on the upper inclined surface 26a.

  A master switch 34 is provided in the vicinity of the top of the operation unit 14 in the Y1 direction so as to be exposed from the upper cover 25b, and an LED 35 is provided at a position where the master switch 34 is easily visible in the Z1 direction. Thus, the electrode plug 21 protrudes in the Y1 direction.

  The working unit 16 includes a distal end working unit 12 that performs the work, a long and hollow shaft (connection shaft) 18 provided with the distal end working unit 12 at the distal end, and a pulley box 32 to which a proximal end side of the shaft 18 is fixed. And a trigger lever 36 that is pivotally supported by a trigger lever support portion 33 that extends from the Z2 direction end of the pulley box 32. The working unit 16 has a pair of lower covers 37a and 37b divided substantially symmetrically in the Z direction as a housing, and houses a pulley box 32 therein. The trigger lever support portion 33 is a pair of plates extending in parallel with the Z2 direction from the Z2 side end surface of the pulley box 32, and the trigger lever 36 is pivotally supported by a trigger shaft 39 extending between the plates. (See FIG. 4).

  Such a working unit 16 is connected and fixed to the operation unit 14 by a pair of left and right attachment / detachment levers 40, 40 provided in the operation unit 14, and can be separated from the operation unit 14 by opening the attachment / detachment lever 40. Yes, replacement work and the like can be easily performed at the operation site without using a special instrument.

  As shown in FIG. 1, the distal end working unit 12 and the shaft 18 are configured to have a small diameter, and can be inserted into a body cavity 22 from a cylindrical trocar 20 provided in a patient's abdomen or the like. In addition, by operating the trigger lever 36, various procedures such as excision of the affected part, grasping, peeling, suturing, and ligation can be performed in the body cavity 22, and thermal treatment by energization from the high frequency power source 23 is possible.

  The distal end operating unit 12 that operates based on the operation of the composite input unit 24 and the trigger lever 36 includes a gripper 300 that includes a pair of gripper members 308 and 309 that function as a pair of electrode members that can grip and energize a living body between them. (See FIG. 9 and FIG. 13), yaw axis operation tilting with reference to the Y axis (or pitch axis operation), roll axis operation rotating with respect to the axis pointing toward the tip (Z axis in the neutral posture), and A three-axis operation including an openable / closable gripper shaft operation (open / close operation) is possible.

  In the present embodiment, the yaw axis operation and the roll axis operation are electrically driven based on the operation of the composite input unit 24, and the gripper axis operation is mechanically driven based on the operation of the trigger lever 36. Here, mechanical is a system that drives through wires, chains, timing belts, links, rods, gears, etc., and a system that drives mainly through solid mechanical parts that are inelastic in the power transmission direction. It is. Wires, chains, and the like may inevitably have some elongation due to tension, but these are inelastic solid mechanical parts.

2. 2. Description of each component of the manipulator 2.1. Description of Drive Unit and Pulley Box that are Removable from Each Other The drive unit 30 and the pulley box 32 are detachable from each other, thereby transmitting a driving force from the operation unit 14 to the working unit 16.

  As shown in FIGS. 1 and 2, the drive unit 30 includes two motors (actuators) 50a and 50b arranged in the X direction, a bracket 52 that supports the motors 50a and 50b, and the rotational directions of the motors 50a and 50b. And a gear mechanism unit 54 that converts the signal and transmits it to the working unit 16 side.

  The motors 50a and 50b are cylindrical, and output shafts 56a and 56b that are decelerated by a reduction gear (not shown) pass through one surface of the bracket 52, and a drive umbrella that constitutes a gear mechanism portion 54 with respect to the output shafts 56a and 56b. Gears 58a and 58b are fixed. The motors 50a and 50b are, for example, DC motors, and a rotary encoder or the like is provided as an angle sensor (not shown).

  As shown in FIG. 2, the gear mechanism portion 54 is provided in a space in the bracket 52, and is fixed to two drive shafts (drive shafts) 60a and 60b arranged in the X direction, and the drive shafts 60a and 60b. And two driven bevel gears 62a and 62b that mesh with the drive bevel gears 58a and 58b. The output shafts 56a and 56b of the motors 50a and 50b, the drive shafts 60a and 60b, and the like are pivotally supported on the bracket 52 by bearings (not shown).

  The lower end side of the drive shaft 60a (60b) protrudes from the lower surface of the bracket 52, and an engaging convex portion 64a (64b) that is biased and supported downward by, for example, a coil spring 63 is provided at the tip thereof. . The engaging convex portion 64a (64b) is a substantially petal-shaped convex portion having one large convex portion and four small convex portions as five arc-shaped convex portions extending radially from the axial center. (See FIG. 3A).

  As shown in FIGS. 2 and 4, the pulley box 32 includes a hollow portion 66 opened on both sides in the X direction, pulleys (driven shafts) 70a and 70b and wire guide portions 72a and 72b housed in the hollow portion 66. The shaft 18 is fixed and supported by a hole that penetrates the cavity 66 on the Z1 side.

  The pulleys 70a and 70b are coaxial with respect to the drive shafts 60a and 60b, and engagement concave portions 74a and 74b that can be engaged with the engagement convex portions 64a and 64b on the drive shafts 60a and 60b side are provided on the upper ends thereof. Is provided. The engagement recesses 74a and 74b can be engaged (fitted) with the engagement protrusions 64a and 64b. For example, as the five arc-shaped recesses extending radially from the axial center, one large recess and four It is a substantially petal-shaped recess having a small recess (see FIG. 3B). That is, as can be understood from FIGS. 3A and 3B, the engaging convex portion 64a (64b) and the engaging concave portion 74a (74b) can be engaged with each other only at a predetermined phase.

  Accordingly, when the operating unit 14 and the working unit 16 are mounted, the motor 50a (50b) is appropriately driven and controlled, whereby the engagement convex portion 64a (64b) and the engagement concave portion 74a (74b) are formed in a predetermined phase. Thus, the rotational driving force from the drive shaft 60a (60b) can be transmitted to the pulley 70a (70b). At this time, for example, the operation unit 14 includes an attachment / detachment detection sensor (not shown) that detects attachment / detachment of the operation unit 14 and the working unit 16, a phase detection sensor (not shown) that detects the phase of the drive shaft 60a, A coupling sensor (not shown) for detecting the engagement state between the engagement convex portions 64a and 64b and the engagement concave portions 74a and 74b may be provided. Of course, the engagement structure of the engagement convex part 64a and the engagement concave part 74a may be another structure.

  As can be understood from FIGS. 2 and 4, the wire guide portion 72a (72b) is disposed on the Z1 side of the pulley 70a (70b), and the interval thereof is set narrow, and the pulley 70a (70b) And a gear (power transmission member) 80a (80b) wound between the shaft body 126 and the gear body 126 (see FIG. 13) of the distal end working unit 12, and has a function of smoothly guiding it into the shaft 18.

  As shown in FIG. 2, the electrode bar 71 protrudes from the upper end in the Z1 direction of the pulley box 32 in the Y1 direction, and is provided so as to be able to be inserted through a through hole 73 formed in the upper cover 25b. An electrode plug 21 provided at the ends of two power cables (electric wires) E01 and E02 connected to the high-frequency power source 23 is fitted on the electrode rod 71. The power cables E01 and E02 are electrically connected to the first cable E1 and the second cable E2 by internal wiring (not shown) of the electrode rod 71, respectively. The first cable E1 and the second cable E2 from the electrode rod 71 are drawn into the cavity 66 from the hole 69 opened on the upper surface of the pulley box 32, and are wired inside the shaft 18 toward the distal end working unit 12 side. .

  In the hollow portion 66 of the pulley box 32, two rods 82a and 82b arranged in the Y direction, which are rod-shaped or linear power transmission members, further penetrate in the Z direction. The rods 82a and 82b are, for example, sufficiently strong and thin stainless steel pipes or solid rods. The Z1 direction of the rods 82a and 82b extends through the hollow portion 66 into the shaft 18 and is wound around the idle pulley 140a and the like in the distal end working portion 12 via the wires 252a and 252b (see FIG. 8). The Z2 direction extends through the pulley box 32 to the trigger lever support portion 33 and is connected to the trigger lever 36 via a rod 85 and a wire 87 (see FIG. 8).

  As shown in FIGS. 2 and 4, a pair of pin holes 84 and 84 that are symmetrical with respect to the Z direction are formed on the Z2 side of the pulley box 32. A pair of guide pins 86, 86 projecting from the bottom surface of the bracket 52 in the Y1 direction are inserted into the pin holes 84, 84 when the working unit 16 and the operating unit 14 are mounted. The part 16 is positioned and mounted with high rigidity.

  In the working unit 16, the wires 80a and 80b reciprocate between the pulleys 70a and 70b side and the distal end working unit 12 side, respectively, so that a total of four wires 80a, 80b and the two rods 82a and 82b are inserted. For example, all power transmission mechanisms may be configured with only wires instead of rods. The wires 80a and 80b can be of the same type, different types, the same diameter, or different diameters, and are made of flexible and bendable wires. In the wires 80a and 80b, portions that pass through the shaft 18 and do not require flexibility may be reinforced by surrounding a high-rigidity reinforcing rod (not shown).

  In such a manipulator 10, when the composite input unit 24 is operated and the motors 50a and 50b are driven, the wires 80a and 80b are driven to reciprocate from the drive shafts 60a and 60b via the pulleys 70a and 70b, and the tip operation is performed. Operations in the roll direction and the yaw direction are given to the section 12. Further, when the trigger lever 36 is turned, the rods 82a and 82b are mechanically reciprocated, and an opening / closing operation is given to the gripper 300 of the distal end working unit 12.

  The driving elements disposed in the operation unit 14 and the pulley box 32, that is, the pulleys 70a and 70b (motors 50a and 50b) and the trigger lever 36 are driven by the wires 80a and 80b and the rods 82a and 82b, which are power transmission members. It functions as a drive mechanism that applies force and operates the distal end working unit 12. More specifically, the pulleys 70a and 70b (motors 50a and 50b) function as an electric mechanism unit that applies driving force to the wires 80a and 80b, and applies operation in the roll direction and yaw direction to the distal end operating unit 12. The trigger lever 36 functions as a manual mechanism that applies a driving force to the rods 82 a and 82 b and applies a gripper opening / closing operation to the distal end operating unit 12.

2.2. Description of Composite Input Unit for Electrically Driving the Tip Operating Unit As shown in FIG. 5, the composite input unit 24 for electrically driving the tip operating unit 12 has X1 and Y centered on the Z axis (Y axis). This is a composite input unit that is symmetrical with respect to the X2 direction and gives rotation commands in the roll direction (axial rotation direction) and yaw direction (left-right direction) to the distal end working unit 12.

  The composite input unit 24 is supported by a sensor holder 88 disposed on the inclined surface 26a, and is provided on the Z1 side (Y1 side) rotation operation unit 90 of the inclined surface 26a and on the Z2 side (Y2 side) thereof. The tilt operation unit 92 includes three switch operators 94a to 94c disposed on the lower side surface of the tilt operation unit 92, respectively. The input to the rotary operation unit 90 and the like is detected by a switch board (not shown) provided in the sensor holder 88, and the motors 50a and 50b are appropriately driven and controlled under the control of the controller 29. The

2.3. Next, description will be given of the distal end working unit 12 that performs a predetermined operation at the distal end of the manipulator 10 according to the present embodiment.

  Hereinafter, the distal end working unit 12 will be described by exemplifying a structure that employs the gripper 300 as an end effector that performs work at the forefront of the distal end working unit 12. The end effector may be any end effector as long as it can constitute an electric knife provided with an electrode member such as the gripper 300. For example, a bipolar electric knife using scissors may be used. Further, in the manipulator 10, as described above, since the working unit 16 having the distal end working unit 12 provided at the distal end of the shaft 18 can be attached to and detached from the operation unit 14, the type of end effector (gripper or scissors) is easy. Can be changed.

  In the distal end working unit 12, the first cable E <b> 1 and the second cable E <b> 2 inserted through the shaft 18 are wired in a state that can smoothly follow the three-axis motion of the distal end working unit 12, thereby configuring the gripper 300. A pair of gripper members (electrode members) 308 and 309 are connected to each other. Thus, in the distal end working unit 12, the cable E does not interfere with the operation state of the gripper opening / closing operation, the yaw axis operation, and the roll axis operation, and the gripper member 308, 309 can be appropriately energized.

2.3.1. Description of the tip operating unit First, prior to the description of the wiring structure of the cable E in the tip operating unit 12, a basic structure for giving the tip operating unit 12 a gripper axis operation, a yaw axis operation, and a roll axis operation will be described.

  As shown in FIGS. 6 to 8, the distal end working unit 12 includes a rod 82a, a passive wire 252a, an idle pulley 140a, a guide pulley 142a, a passive pulley 156a, and a first gripper driving mechanism (first end effector driving mechanism). 320a and a second gripper driving mechanism (second end effector driving mechanism) 320b corresponding thereto are provided. The first gripper driving mechanism 320a and the second gripper driving mechanism 320b are basic configurations for opening and closing the gripper 300.

  The components in the first gripper drive mechanism 320a are identified by a and the components in the second gripper drive mechanism 320b are identified by b. The components of the first gripper drive mechanism 320a and the components of the second gripper drive mechanism 320b that have the same function may be described only typically with respect to the first gripper drive mechanism 320a so as not to become complicated.

  In FIGS. 6 and 7, for ease of understanding, the first gripper driving mechanism 320 a and the second gripper driving mechanism 320 b are shown side by side on the paper surface. However, when applied to the actual manipulator 10, FIG. As shown in FIG. 8, the idle pulleys 140a and 140b and the rotation shafts of the guide pulleys 142a and 142b are preferably arranged on the same axis in parallel in the axial direction of each pulley (that is, the Y direction). That is, the idle pulleys 140a and 140b can be pivotally supported on the shaft 110 (see FIG. 8), and the guide pulleys 142a and 142b can be pivotally supported on the shaft 112. By making the guide pulleys 142a and 142b have a coaxial configuration, the yaw axis operating mechanism having the shaft 112 as a rotation axis (oscillation axis) becomes a simple configuration.

  As shown in FIGS. 9 to 13, the distal end working unit 12 includes a wire passive unit 100, a composite mechanism unit 102, and a gripper 300, and a first rotation axis (yaw axis, pitch axis) Oy in the Y direction. , And a second degree of freedom rotating in the roll direction around the second rotation axis (roll axis) Or, The mechanism has a total of three degrees of freedom having a third degree of freedom in which the gripper 300 at the tip end opens and closes around the third rotation axis (gripper axis, opening / closing axis) Og.

  The mechanism of the yaw axis operation by the first rotation axis Oy is set so as to be swingable in a direction intersecting with the axis along the extending direction of the shaft 18, and has a working range of, for example, about ± 70 ° or more. (Tilt mechanism) (see FIGS. 10 and 11). The mechanism of the roll direction operation by the second rotation axis Or is set so that the tip end portion can rotate around the axis in the extending direction of the tip end portion (that is, the gripper 300) in the tip operating portion 12, for example, about ± 160 ° or more (See FIGS. 10 and 12. Refer to the gripper 300 indicated by a two-dot chain line in FIG. 9). The gripper opening / closing mechanism (gripper 300) by the third rotating shaft Og is an opening / closing mechanism that can open, for example, about 30 ° or more (see FIGS. 16 and 17).

  The gripper 300 is a part that performs actual work in the operation, and the first rotation axis Oy and the second rotation axis Or constitute a posture axis that constitutes a posture change mechanism for changing the posture of the gripper 300 so that the work can be easily performed. It is. In general, the first rotation axis Oy that swings in the yaw direction is also called a yaw axis, the second rotation axis Or that rotates in the roll direction is also called a roll axis, and the third rotation axis Og that opens and closes the gripper 300 is a gripper axis. Also called.

  As shown in FIGS. 13 and 15 to 17, the wire passive portion 100 is formed between a pair of tongue pieces 159 and 159 protruding to the distal end side of a stepped cylindrical base end support member (base end cover) 116. It is a portion that is provided and converts the reciprocating motion of each of the wires 80 a and 80 b into a rotational motion and transmits it to the composite mechanism section 102.

  The wire passive unit 100 includes a shaft 110 inserted into the shaft holes 160a and 160a and a shaft 112 inserted into the shaft holes 160b and 160b. The shafts 110 and 112 are fixed to the shaft holes 160a and 160b, for example, by press fitting or welding. A shaft 112 on the distal end side of the tongue piece 159 is disposed on the first rotation axis Oy serving as the yaw axis. That is, the shaft 112 becomes a support shaft of the joint portion 114 on the proximal end side of the distal end working unit 12.

  A gear body (rotating body) 126 and a pulley (rotating body) 130 that are symmetrical in the Y direction are provided at both ends of the shaft 112 constituting the joint portion 114 in the Y direction. The gear body 126 includes a cylindrical body 132 and a gear 134 provided concentrically on the upper portion of the cylindrical body 132. The pulley 130 has substantially the same diameter and the same shape as the cylindrical body 132. The gear 134 meshes with a face gear 165 of a gear body 146 described later.

  A part of the wires 80a and 80b is fixed to the pulley 130 and the cylindrical body 132 by predetermined fixing means (see FIG. 15). The angle at which the wires 80a and 80b are wound is, for example, 1.5 rotations (540 °). The pulley 130 is integrally provided on the base end side of the main shaft member 144, and the main shaft member 144 is supported by the shaft 112 so as to be rotatable (tilted) about the first rotation axis Oy (yaw axis). Has been.

  By causing the wire 80a to reciprocate (advance and retreat), the main shaft member 144 provided integrally with the pulley 130 rotates about the first rotation axis Oy, and the yaw axis operation is performed. By causing the wire 80b to reciprocate (advance / retreat operation), the gear body 126 rotates with respect to the shaft 112, the gear body 146 rotates with respect to the second rotation axis Or, and roll axis operation is performed. When the gear body 126 and the pulley 130 are rotated, a combined operation of the yaw direction operation and the roll rotation operation is performed. In this way, the mechanism of the distal end working unit 12 is such that the wire 80b drives the face gear 165 via the gear 134, whereas the wire 80a is not limited to the type in which the main shaft member 144 is directly driven to rotate. A differential mechanism corresponding to the configuration shown in FIG. 23 in Japanese Patent Laid-Open No. 2008-253463 may be used.

  Idle pulleys 140a and 140b are rotatably supported at a substantially central portion of the shaft 110, and guide pulleys 142a and 142b are rotatably supported at a substantially central portion of the shaft 112. The idle pulleys 140a and 140b are used to keep the winding angle of the passive wires (flexible members, transmission members) 252a and 252b wound around the guide pulleys 142a and 142b constant at all times (approximately 180 ° on both sides). is there. Instead of the idle pulleys 140a and 140b, the guide pulleys 142a and 142b may be provided with one or more turns of the passive wires 252a and 252b (see FIG. 8). The guide pulleys 142a and 142b are provided on a first rotation axis Oy that is a yaw axis in the posture changing mechanism.

  As shown in FIGS. 13 and 15, a guide pulley 142a, 142b is sandwiched between two auxiliary plates 144b, 144b on the shaft 112 constituting the first rotating shaft Oy, and a pulley 130 projects from the Y2 side thereof. The main shaft member 144 is rotatably supported. The main shaft member 144 has a cylindrical portion that protrudes toward the composite mechanism portion 102 (see FIG. 13). A square hole 144 a is provided in the axial center portion of the main shaft member 144. At the end in the Z2 direction of the main shaft member 144, there are provided two auxiliary plates 144b that hold the upper surface in the Y direction of the guide pulley 142a and the lower surface in the Y direction of the guide pulley 142b and have a hole through which the shaft 112 is inserted. . The auxiliary plate 144b has a mountain shape that becomes wider in the Z1 direction, and can prevent entry of foreign matters such as a thread from the joint portion 114 (see FIGS. 9 and 10) that is wide open.

  Next, the composite mechanism unit 102 is a composite mechanism unit including an opening / closing operation mechanism of the gripper 300 and a posture changing mechanism that changes the posture of the gripper 300.

  As shown in FIG. 13 and FIGS. 15 to 17, the composite mechanism portion 102 is provided on a gear body 146 that is rotatably inserted into the peripheral surface of the cylindrical portion of the main shaft member 144, and a tip screw portion of the main shaft member 144. The nut body 148 to be fastened, the transmission member 152 having a square section in the Z2 direction inserted into the hole 144a of the main shaft member 144, and the pin 154 rotatably supported by the Z2 direction end of the transmission member 152 A passive pulley 156a, a flat passive plate 158 having both ends projecting in the Z2 direction, and a cylindrical tip support member (tip cover) 161 having a substantially enlarged central portion.

  A resin-made thrust bearing member 144c is provided on a portion of the main shaft member 144 that contacts the gear body 146. A thrust bearing member 148a made of resin is provided at a portion of the nut body 148 that contacts the gear body 146. The thrust bearing members 144c and 148a are low-friction materials that reduce the friction and torque at the abutting portion and prevent the face gear 165 from being directly loaded. The thrust bearing members 144c and 148a are so-called sliding bearings, but may be provided with rolling bearings. Accordingly, even when the gripper 300 is strongly closed or opened, that is, when the gear body 146 strongly contacts the main shaft member 144, the roll rotation operation can be performed smoothly.

  The gear body 146 has a stepped cylindrical shape, and includes a large diameter portion 162 in the Z2 direction, a small diameter portion 164 in the Z1 direction, and a face gear 165 provided on the end surface of the large diameter portion 162 in the Z2 direction. The face gear 165 meshes with the gear 134 of the gear body 126. The gear body 146 is prevented from coming off from the main shaft member 144 by a nut body 148. A screw is provided on the outer periphery of the large diameter portion 162.

  The passive plate 158 includes a concave portion 166 in the Z2 direction, an engaging portion 168 provided on the bottom surface of the concave portion 166, axial ribs 170 and 170 provided on both sides in the Y direction, and link holes 172 and 172, respectively. Have The engaging portion 168 has a shape that engages with a mushroom-like protrusion 174 provided at the tip of the transmission member 152. By this engagement, the passive plate 158 and the transmission member 152 can rotate relative to each other. The width of the passive plate 158 is substantially equal to the inner diameter of the tip support member 161.

  The tip support member 161 is sized to cover substantially the entire composite mechanism portion 102, and prevents foreign matter (biological tissue, medicine, thread, etc.) from entering the composite mechanism portion 102. As shown in FIGS. 13 and 16, two axial grooves 175 and 175 in which the two ribs 170 and 170 of the passive plate 158 are fitted are provided to face the inner surface of the tip support member 161. The passive plate 158 is guided in the axial direction by fitting the rib 170 into the groove 175. Since the protrusion 174 at the tip of the transmission member 152 engages with the engaging portion 168 of the passive plate 158, the passive pulley 156 a moves forward and backward in the axial direction together with the passive plate 158 and the transmission member 152 in the hole 144 a of the main shaft member 144. It is possible to rotate the roll with reference to the transmission member 152. The tip support member 161 is fixed to the large diameter portion 162 of the gear body 146 by means such as screwing or press fitting.

  As shown in FIG. 15, the distal end support member 161 has a base end portion fitted onto the gear body 146 and coupled (screwed, press-fitted, etc.). The distal end support member 161 and the gripper 300 are connected to the gear body 146. The roll axis operation is performed along with the rotation of.

  In the gripper 300, the lever 310 on the base end side of one gripper member 308 and the passive plate 158 are connected by the gripper link 220, and the lever portion 310 on the base end side of the other gripper member 309 and the passive plate 158 are connected. Are connected by a gripper link 221. That is, the pin 220 is inserted into the hole 220 a at one end of each gripper link 220, 221 together with the hole 218 of the lever portion 310, and the pin 224 is inserted into the hole 220 b at the other end together with the link hole 172 of the passive plate 158. Has been.

  Although details will be described later, since the first cable E1 and the second cable E2 are connected to the gripper members 308 and 309, respectively, the stepped cylindrical shape formed of resin or the like between the lever portions 310 has insulation properties. The insulating cylinder 400 is insulated (see FIGS. 13 and 15).

  As shown in FIG. 19, the idle pulley 140a is configured by two coaxial first-layer idle pulleys 232 and second-layer idle pulleys 234 arranged in parallel, and the guide pulley 142a has a first coaxial pulley 140a. Two layers of the layer guide pulley 236 and the second layer guide pulley 238 are configured in parallel.

  As shown in FIG. 8, the end portion in the Z1 direction of the rod 82a is connected to both end portions of the passive wire (flexible member) 252a by the wire engaging portion 250a.

  As shown in FIG. 20, in the wire engaging portion 250a, a roller 262 is provided at a tip portion 260 of a rod 82a, and a passive wire 252a is wound around the roller 262. The roller 262 is supported by a pin 264 and is rotatable. As a result, the passive wire 252a is appropriately advanced and retracted while being wound around the roller 262, and when the rod 82a is pulled in the Z2 direction, the passive wire 252a is pulled in a balanced manner in the X direction even when the yaw axis is not bent. be able to. The distal end portion 260 is screwed to the rod 82a.

  As shown in FIGS. 8 and 19, the passive wire 252a is an annular flexible member partially connected to the wire engaging portion 250a. In addition to the wire, a rope, a resin wire, a piano wire, a chain, etc. Can be used.

  The passive wire 252a passes from the rod 82a of the driving member through the X1 direction (first side) of the idle pulley 140a, toward the X2 direction (second side), and passes through the surface of the guide pulley 142a in the X2 direction. It reaches the surface of the passive pulley 156a in the X2 direction. Further, the passive wire 252a is wound halfway around the surface of the passive pulley 156a in the Z1 direction to reach the surface of the X1 direction, passes through the surface of the guide pulley 142a in the X1 direction, and moves in the X2 direction to the X2 direction of the idle pulley 140a. It is arrange | positioned by the path | route which leads to the wire engaging part 250a.

  In other words, the passive wire 252a forms a circuit that has the wire engaging portion 250a as a base point and an end point, passes through both sides of the idle pulley 140a, is wound around the passive pulley 156a, and the idle pulley 140a and the guide pulley 142a It intersects between the two to form an approximately 8-character shape. Thereby, the wire engaging part 250a and the passive wire 252a are mechanically connected with respect to the trigger lever 36 via the rod 82a.

  The idle pulley 140a, the guide pulley 142a, and the passive pulley 156a have substantially the same diameter, and have an appropriately large diameter within a possible range in the layout so that the passive wire 252a is not bent so much. The wire engaging portion 250a is provided at a position moderately separated from the idle pulley 140a so that the passive wire 252a does not bend excessively, and both ends of the passive wire 252a have an acute angle with the wire engaging portion 250a as the top. Is forming. The gap between the idle pulley 140a and the guide pulley 142a is narrow, and for example, a gap substantially equal to the width of the passive wire 252a is formed.

  As can be seen from FIG. 8, in the first gripper drive mechanism 320a, the passive wire 252a, the idle pulley 140a, the guide pulley 142a, and the passive pulley 156a are arranged along the center line from the base end side to the tip end side. ing. The gripper 300 is connected to the passive pulley 156a via the transmission member 152 and the like (see FIGS. 13 and 15).

  In the first gripper drive mechanism 320a configured as described above, when the rod 82a (see FIG. 8) is pulled in the Z2 direction, the first layer idle pulley 232 and the second layer guide pulley 238 are counterclockwise in plan view. Rotating, the second layer idle pulley 234 and the first layer guide pulley 236 rotate clockwise. As described above, the idle pulley 140a and the guide pulley 142a are configured such that two pulleys are coaxially arranged in parallel, and thus can be rotated in the reverse direction in accordance with the movement of the passive wire 252a that comes into contact with the idle pulley 140a and the guide pulley 142a. Is possible.

  Next, the gripper 300 will be specifically described.

  As shown in FIGS. 13 and 15 to 17, the gripper 300 is a so-called double-open type in which a pair of gripping portions 302 and 302 operate. The gripper 300 is operated with reference to a pair of gripper bases 304 and 304 formed on the tip support member 161 and a pin (shaft member) 196 inserted into a shaft hole 305 provided in the gripper base 304. The gripper members 308 and 309 and a pair of gripper links 220 and 221 are provided. A shallow recess 304a is formed on the inner surface of each gripper base 304 including the shaft hole 305 portion. In each recess 304a, a plate-shaped energizing member 311 provided with a hole 311a through which the pin 196 is inserted is disposed with the washer 313 sandwiched on the inner surface side. Each energizing member 311 is a terminal for energizing each gripper member 308, 309 by connecting the first cable E1 and the second cable E2 respectively.

  The gripper members 308 and 309 have a state-of-the-art grip portion 302 that is slightly bent and extends in the Z1 direction, and a lever portion 310 that is bent approximately 35 ° with respect to the grip portion 302 and extends. A hole 216 is provided near the grip portion 302 of each lever portion 310, and a hole 218 is provided near the end of the lever portion 310.

  As shown in FIG. 15, when the pin 196 is inserted into the hole 216, the pair of gripper members 308 and 309 are swingable about the third rotation axis Og. The insulating cylinder 400 is interposed between the pin 196 and the hole 216 of each gripper member 308, 309.

  The gripper members 308 and 309 are connected to pins 224 and 224 inserted into the link holes 172 of the passive plate 158 together with the gripper links 220 and 221. In the passive plate 158 that functions as a link that opens and closes the gripper 300, two link holes 172 are provided at symmetrical positions in the Y direction, and the pair of gripper links 220 and 221 intersect each other in a side view (FIG. 13 and FIG. 13). FIG. 15).

  As shown in FIGS. 8, 13, and 15, the second gripper driving mechanism 320b basically has a configuration in which a folding pulley 350 is added to the first gripper driving mechanism 320a. The passive pulley 156a and the passive pulley 156b have a coaxial configuration.

  As shown in FIGS. 13 and 15, the main shaft member 144 is provided with a radial shaft hole 354 into which the pin 352 is inserted and fixed. The shaft hole 354 passes through the cylindrical portion of the main shaft member 144 via the hole 144a.

  The transmission member 152 is provided with a long hole 356 extending in the axial direction with a width through which the pin 352 can be inserted (see FIG. 13). As shown in FIG. 15, the transmission member 152 is provided at a position slightly offset in the Y1 direction from the axis of the proximal support member 116 (shaft 18), but only the protrusion 174 at the distal end may be arranged at the axis. (See FIG. 15). Of course, the transmission member 152 may be arranged at the center.

  The pin 154 passes through the transmission member 152 and protrudes in the Y2 direction to pivotally support the passive pulley 156b. The passive pulley 156b has a width that allows the passive wire 252b to be wound twice. The hole 144a of the main shaft member 144 has a height at which the passive pulleys 156a and 156b and the transmission member 152 can be inserted. The passive pulleys 156a and 156b are axially supported by a pin 154 in the hole 144a and are independently rotatable.

  The pin 352 is inserted into the center hole of the elongated hole 356 and the folding pulley 350 from the Y1 direction toward the Y2 direction in the hole 144a, so that the transmission member 152 and the passive pulleys 156a and 156b can advance and retract in the axial direction. The folding pulley 350 is supported by a pin 352 and is rotatable, and its position is fixed. The folding pulley 350 has a width that allows the passive wire 252b to be wound twice.

  As shown in FIG. 6 to FIG. 8 and FIG. 15 to FIG. 17, in the second gripper driving mechanism 320b, a folding pulley 350 is provided on the tip side of the passive pulley 156b, and the passive wire 252b is folded back with the passive pulley 156b. It is wound around the pulley 350. That is, the passive wire 252b passes from the wire engaging portion 250b of the rod 82b of the driving member through the X1 direction of the idle pulley 140b, toward the X2 direction, passes through the X2 direction of the guide pulley 142b, and the X2 direction surface of the passive pulley 156b. To. The passive wire 252b extends in the Z1 direction as it is, reaches the surface in the X2 direction of the folding pulley 350, is wound around the Z1 direction surface of the folding pulley 350, and is folded in the Z2 direction.

  The passive wire 252b is wound around the surface of the passive pulley 156b in the Z2 direction by half rotation, passes through the X2 side, reaches the folding pulley 350 again, and is again wound around the Z1 direction of the folding pulley 350 by half rotation in the Z2 direction. Wrap. Thereafter, the passive wire 252b extends from the X1 direction of the guide pulley 142b to the X2 direction of the idle pulley 140b and is connected to the wire engaging portion 250b of the rod 82b. The wire engaging portion 250a and the passive wire 252a are mechanically connected to the trigger lever 36 via the rod 82a.

  In the distal end working unit 12 configured in this way, as shown in FIGS. 6 and 16, when the trigger lever 36 is sufficiently pulled by hand, the rod 82a pulls the passive wire 252a, and the passive pulley 156a and the transmission member 152 are moved. Since the gripper 300 is moved in the Z2 direction, the gripper 300 can be closed. That is, the gripper 300 is closed by pulling transmission members such as the rod 82a, the passive wire 252a, and the passive pulley 156a. In this case, with respect to the second gripper driving mechanism 320b, the rod 82b is disposed so as to be pushed out, and thus does not hinder the operation of the transmission member 152.

  Further, as shown in FIGS. 7 and 17, when the trigger lever 36 is sufficiently pushed out manually, the transmission member 152 and the passive pulley 156a can move in the Z1 direction toward the tip side to open the gripper 300. Since the force that pushes the trigger lever 36 manually is directly transmitted to the gripper 300 by the second gripper driving mechanism 320b, the gripper 300 can be opened with an arbitrary strong force instead of a predetermined force such as an elastic body. Therefore, it can be suitably used for a procedure that peels the living tissue using the outer surface of the gripper 300 or widens the hole.

  Further, when the object comes into contact with the outer surface of the gripper 300, the passive wire 252b, the rod 82b, and the trigger lever 36 do not move further in the Z1 direction, and the operator touches the outer surface of the gripper 300 with the object. And the hardness of the object can be perceived with a fingertip.

  The tip operation unit 12 can further perform a yaw axis operation and a roll axis operation. As shown in FIGS. 10 and 11, in the tip operation unit 12, when the yaw axis operation is performed, the composite mechanism unit 102 and the gripper 300 at the tip are centered on the shaft 112 of the guide pulley 142 a and the guide pulley 142 b. Swings in the yaw direction. Since the distal end working unit 12 is a non-interference mechanism, the opening degree of the gripper 300 does not change even when the yaw axis operation is performed. Conversely, the yaw axis operates even when the opening degree of the gripper 300 is changed. There is nothing. The same applies to the relationship between the gripper 300 and the roll shaft.

2.3.2. Next, the wiring structure of the cable E in the distal end working unit 12 will be described.

  In the distal end working unit 12, as described above, the first cable E1 and the second cable E2 are connected to the gripper members 308 and 309 that function as a pair of electrode members, respectively, and thereby the current from the high frequency power supply 23 is supplied to the gripper member. The living body held between 308 and 309 can be energized.

  However, since the distal end operating unit 12 performs the above-described operations (yaw axis operation, roll axis operation, gripper opening / closing operation), the cable E has a sufficient margin (bending) so as not to interfere with these operations. On the other hand, it is necessary to prevent the marginal portion of the cable E from protruding to the outside and being caught by the entrance of the trocar 20 or the living tissue in the body cavity 22. Therefore, in the manipulator 10 according to the present embodiment, the distal end working unit 12 employs a wiring structure that can achieve both the operation of the distal end working unit 12 and the smooth execution of the procedure using the tip operation unit and the appropriate storage of the cable E. Yes.

  That is, as shown in FIG. 14, the distal end working unit 12 includes a cable holding member (cable presser) 402 that binds and holds the proximal end (Z2 side) portion of the cable E inserted through the shaft 18, and the cable E A distal end support member 161 that binds and supports the distal end side (Z1 side) portion, and a C-ring-shaped cable guide that slidably engages on the outer peripheral surface 161b of the proximal end side cylindrical portion of the distal end support member 161 in the circumferential direction. Ring member) 404 and a cable cover 406 disposed on the outer peripheral side of the cable guide 404. The first cable E1 and the second cable E2 are wired from the shaft 18 side to the gripper 300 side through these members.

  The cable holding member 402 is a pair of a ring portion (ring member) 408 that is slidably fitted in the circumferential direction on the base end peripheral portion of the outer peripheral surface 161b of the distal end support member 161, and a pair that protrudes from the Z2 side surface of the ring portion 408. Projecting pieces 412, 412. At a position corresponding to one (Y2 side) protruding piece 412, a part of the ring portion 408 in the circumferential direction is cut out in a tunnel shape and opened in the axial direction so that the first cable E 1 and the second cable E 2 are inserted together. A base end bundling portion (second bundling portion, notch passage) 408a to be held is formed. On the outer peripheral surface of the ring portion 408 on the front end side (Z1 side), an annular recess 408b that forms the ring portion 408 in a stepped shape is formed. Each protruding piece 412 is disposed on the outer surface of each tongue piece 159 of the base end support member 116, and the shaft 112 is fitted and supported in the shaft hole 412a at the end (see FIGS. 9, 10 and 10). FIG. 15).

  Therefore, as shown in FIGS. 10 and 11, the cable holding member 402 is moved along the yaw direction of the tip support member 161 having the first rotation axis Oy (shaft 112) as an axis. It swings together with the support member 161. On the other hand, as can be seen from FIG. 15, the cable holding member 402 has the shaft hole 412 a supported by the shaft 112, and therefore the tip support member 161 having the second rotation axis Or as the axis is in the roll direction. For the rotation operation, the outer peripheral surface 161b of the tip support member 161 slides in the circumferential direction on the inner surface of the ring portion 408, and does not rotate in the roll direction.

  The cable guide 404 is a C-ring-like member that is slidably engaged in the circumferential direction on the outer peripheral surface 161b of the tip support member 161. The cable guide 404 is partially cut in the circumferential direction in the axial direction. A notch 414 is formed. The notch portion 414 is arranged so as to open to the Y1 side in the neutral posture (roll neutral posture) of FIG. 10 in which the distal end working portion 12 is not performing the roll axis operation (see FIGS. 10 and 14). Each of the pair of side surfaces 404a and 404b facing each other with the notch 414 interposed therebetween has an arc shape.

  As shown in FIGS. 10, 15, and 16, the cable guide 404 includes a ring portion 408 of the cable holding member 402 and an enlarged diameter portion 161 a of the tip support member 161 on the outer peripheral surface 161 b of the tip support member 161. Arranged between. The cable guide 404 is provided with gaps 416 and 416 in which at least one of the first cable E1 and the second cable E2 can be arranged with some margin on the side surfaces of the ring portion 408 and the enlarged diameter portion 161a. Arranged.

  The distal end support member 161 has a distal end bundling portion (first bundling portion) 418 through which a part in the circumferential direction of the enlarged diameter portion 161a is cut out in the axial direction and the first cable E1 and the second cable E2 are inserted and held. In the case of the present embodiment, the distal end binding portion 418 has a configuration in which a pair of cutout passages corresponding to the first cable E1 and the second cable E2 are disposed adjacent to each other (see FIGS. 10 and 14). Similarly to the section 408a, the cable E may be inserted and held together.

  As shown in FIGS. 10 and 15, the outer diameter of the enlarged diameter portion 161 a of the tip support member 161 is set to be substantially the same as the outer diameter of the annular recess 408 b of the cable holding member 402. The both ends of the cable cover 406 in the Z direction are fitted to the enlarged diameter portion 161a and the annular recess 408b, respectively. As a result, the cable guide 404 is prevented from falling off inside the cable cover 406. Further, on the inner side of the cable cover 406, the cable E routed in the gap 416 between the proximal end bundling portion 408a and the distal end bundling portion 418 is prevented from bulging or drooping outward, and the cable E is securely stored. The

  Further, as shown in FIGS. 10 and 14, a cover member 405 for preventing external exposure of the cable E on the outer surface of the distal end support member 161 (gripper base 304) on the distal end side from the distal end binding portion 418, and a proximal end A cover member 407 that prevents external exposure of the cable E on the outer surface of the proximal end support member 116 (tongue piece 159) may be provided on the proximal end side from the binding portion 408a. As these cover members 405 and 407, for example, a thin cylindrical member such as resin or a flexible tube member such as rubber may be used.

  In place of the cover members 405 and 407, holes 409 and 411 penetrating the inner and outer surfaces are provided in the distal end support member 161 and the proximal end support member 116 as shown by a two-dotted line in FIG. The cable E may be inserted into the holes 409 and 411 and pulled into the distal end support member 161 or the proximal end support member 116 to prevent the cable E from being exposed to the outside.

  Based on the above configuration, the wiring structure in the distal end working unit will be specifically described.

  First, as shown in FIG. 8 and FIG. 10, the first cable E1 and the second cable E2 from the electrode rod 71 (see FIG. 2) are forwarded by a wire 80a wound around a pulley 130 that drives the yaw axis operation. And fixed to the return path integrally by a fixing member 420, and wired in the shaft 18 to reach the distal end working unit 12. As the fixing member 420, for example, a heat shrinkable tube or an adhesive tape may be used.

  As shown in FIGS. 10, 14, and 15, the first cable E <b> 1 and the second cable E <b> 2 wired in the shaft 18 are each one (Y2 side) from the opening on the Z1 side of the base end support member 116. The tongue piece 159 is passed through the both sides of the tongue piece 159 to the outer surface of the tongue piece 159, and around the shaft 112, from the inside of the protruding piece 412 on one side (Y2 side) of the cable holding member 402. It is inserted into the end bundling portion 408a.

  The first cable E1 and the second cable E2 that are integrally held by the proximal end bundling portion 408a are branched when reaching the gap 416 between the ring portion 408 and the cable guide 404. After being routed in the circumferential direction away from each other along the side surface 404c (see FIGS. 10 and 14), the notch 414 passes through the notch 414 in the Z1 direction along the side surfaces 404a and 404b of the notch 414, respectively. The first cable E1 and the second cable E2 that have passed through the notch 414 are branched again and routed along the side surface 404d on the Z1 side of the cable guide 404, and then merge again to be inserted into the leading end binding unit 418. Is done.

  The first cable E1 and the second cable E2 that are integrally held by the distal end bundling portion 418 are drawn into the inside of the gripper base 304 from both sides of the gripper base 304 on one side (Y2 side) of the distal end support member 161, respectively. (Refer to FIG. 10 and FIG. 14), and connected to each energizing member 311 corresponding to each gripper member 308, 309 (see FIG. 10, FIG. 13 and FIG. 14).

  At this time, as shown in FIG. 15, between one gripper member 308 and the other gripper member 309, an insulating cylinder 400 surrounding the pin 196 is sandwiched between the lever portions 310 and 310, The insulating cylinder 400 is formed of an insulating resin or the like, and one of the gripper links 221 is formed of an insulating resin or the like to be insulated. For these insulating members, for example, an insulating material such as a resin such as PEEK or ceramic may be used.

  Of course, the insulating method of the one gripper member 308 and the other gripper member 309 is not limited to the configuration of the present embodiment. For example, even if the gripper links 220 and 221 are non-insulating members and the gripper members 308 and 309 are not insulated, the passive plate 158 is an insulating member or is coated or covered with an insulating member. The gripper member 308 and the gripper link 220 and the other gripper member 309 and the gripper link 221 may be insulated from each other and from the passive plate 158. That is, it is only necessary that the three members of the one gripper member 308, the other gripper member 309, and the structural member / power transmission member are in an insulated state.

  As described above, the first cable E1 and the second cable E2 are routed along the side surfaces 404a to 404d of the cable guide 404 on the way from the proximal end binding portion 408a to the distal end binding portion 418, thereby rolling. In addition to having a sufficient margin (deflection) that can cope with the shaft operation, there are interference portions (flexion portions) E1a and E2a housed in the cable cover 406 over the outer peripheral surface 161b (see FIG. 10).

2.3.3. Description of the Cable Wiring State when the Tip Operating Unit Operates First, see FIG. 18A and FIG. 18B regarding the state of the cable E when the tip operating unit 12 performs the roll axis operation around the second rotation axis Or. To explain. 18A is an explanatory view schematically showing the wiring structure of the cable E between the proximal end binding portion 408a and the distal end binding portion 418 in a state where the cable guide 404 and its peripheral portion are developed in the circumferential direction. These are explanatory drawings in the state where the front-end | tip operation | movement part 12 performed roll-axis operation | movement from the state shown to FIG. 18A.

  In the neutral posture (roll neutral posture) in which the distal end working unit 12 is not performing the roll axis operation (see FIG. 10), as shown in FIG. 18A, the first cable E1 and the second cable E2 are connected to the proximal end bundling portion 408a. Wiring is performed along the side surfaces 404a to 404d of the cable guide 404 between the leading end binding portions 418 in a symmetrical positional relationship in the Z direction. In this state, the interference part E1a of the first cable E1 and the interference part E2a of the second cable E2 have substantially the same shape. In FIG. 18A, the rotation angle of the roll axis operation in this state is shown as 0 °.

  Subsequently, for example, when a roll axis operation with a rotation angle of 90 ° is applied to the distal end working unit 12 (see FIG. 12), the distal end support member 161 rotates by 90 °, so that the distal end binding unit 418 is connected to the cable holding member 402. 90 ° roll relative to Then, as shown in FIG. 18B, the first cable E1 and the second cable E2 are rotated in the roll direction while their proximal ends are held by the proximal end binding portion 408a and their distal ends are held by the distal end binding portion 418. Will be.

  Here, in the wiring structure, the cable guide 404 is slidably rotated between the proximal end bundling portion 408a and the front end bundling portion 418. Therefore, as shown in FIG. For example, the distal end side of the interference portion E1a of the first cable E1 is pulled by the distal end binding portion 418, and the interference portion E1a presses the side surface 404a of the cable guide 404 in the roll rotation direction. For this reason, since the cable guide 404 also rotates 90 degrees in the circumferential direction on the outer peripheral surface 161b due to the pressing of the interference portion E1a (first cable E1), the other interference portion E2a (second cable E2) It is pressed in the roll rotation direction from the other side surface 404b.

  That is, as shown in FIG. 18B, the interference portions E1a and E2a have a relative positional relationship with each other due to the rotational action of the cable guide 404 even when the roll binding operation is applied to the tip bundling portion 418. Since sliding while maintaining, it is avoided that an excessive tensile load is generated on the cable E by the roll shaft operation, and an excessive deflection is also avoided.

  As described above, in the distal end working unit 12, the first cable E1 and the second cable E2 are held by the distal end bundling portion 418 that rotates in the roll and the proximal end bundling portion 408a that does not rotate in the roll, and the first cable E1. The second cable E2 is wired between the distal end binding portion 418 and the proximal end binding portion 408a by providing interference portions E1a and E2a along the side surfaces 404a to 404d of the cable guide 404. In this case, the interference portions E1a and E2a are set to be slightly longer than the rotation distance in the roll axis operation of ± 180 °, for example.

  For this reason, when the roll axis operation is applied to the distal end working unit 12, the interference portions E1a and E2a are relatively moved between the proximal end binding unit 408a and the distal end binding unit 418 that relatively roll rotate by the roll axis operation. One side presses and slides and rotates the cable guide 404 while avoiding an excessive tensile load, and the other can be bent by the cable guide 404 rotated and rotated. Will be avoided. Accordingly, the cable E can be appropriately housed and wired so as not to jump out of the distal end working unit 12 while ensuring the smooth roll axis operation of the distal end working unit 12. Moreover, since the roll axis operation is provided with a wide operation range of, for example, ± 180 ° or more as compared with the yaw axis operation, for example, the wiring structure using the cable guide 404 that rotates as described above is particularly suitable. It becomes effective.

  Further, in the distal end working unit 12, the gripper 300 is provided as an electrode member, so that the living tissue can be reliably sandwiched by the gripper 300 and energized. Therefore, the coagulation ability by energization can be enhanced, and damage to other tissues can be reduced as much as possible.

  Next, the state of the cable E when the distal end operating unit 12 performs the yaw axis operation around the first rotation axis Oy will be described with reference to FIGS. 10 and 11.

  As described above, the first cable E1 and the second cable E2 from the electrode rod 71 (see FIG. 2) are connected to the forward path and the return path of the wire 80a wound around the pulley 130 on the shaft 112 that drives the yaw axis operation. Each is fixed integrally by a fixing member 420.

  Accordingly, as shown in FIG. 10, when the yaw axis operation is performed as shown in FIG. 11 from the neutral posture (yaw neutral posture) in which the tip operation unit 12 is not performing the yaw axis operation, the pulley 130 The forward and backward paths of the folded wire 80a advance and retract in the reverse direction in the Z direction, and accordingly, the first cable E1 and the second cable E2 also advance and retract in the reverse direction in the Z direction.

  That is, as shown in FIG. 11, for example, when the distal end working unit 12 is swung in the X2 direction, the pulley 80 (that is, the main shaft member 144) is rotated counterclockwise in FIG. The forward path portion (X1 side portion in FIG. 10) is drawn in the Z2 direction, the return path portion (X2 side portion in FIG. 10) is pushed in the Z1 direction, and is fixed to the forward path portion and the return path portion, respectively. The second cable E2 and the first cable E1 are also moved integrally in the Z2 direction and the Z1 direction. For this reason, it is avoided that the cable E interferes with the yaw axis operation, and further, it is also possible to avoid bending due to the yaw axis operation.

  Of course, as described above, the yaw axis operation is set to about ± 90 °, for example, and the operation range is relatively narrow compared to the roll axis operation, so the cable E is not fixed to the wire 80a by the fixing member 420, and the base end Even if it is configured to be bent somewhat inside the support member 116, the bent cable E does not greatly jump out of the distal end working unit 12, and the operation of the distal end working unit 12 is hardly hindered.

2.3.4. Description of Modification Example of Wiring Structure at Tip Operation Unit Next, as a modification example of the wiring structure at the tip operation unit 12 applied to the manipulator 10 according to the present embodiment, another configuration related to storage and wiring of the cable E Examples will be described in order. In the following description, the same or similar components as those denoted by the reference numerals shown in FIGS. 1 to 20 are denoted by the same reference numerals, and detailed description thereof is omitted.

  FIG. 21A is an enlarged exploded perspective view showing a main part of the wiring structure of the distal end working unit 12a according to the first modification.

  As shown in FIG. 21A, the distal end working portion 12a has a pair of insertion holes (holes) 430a and 430a penetrating in the Z direction instead of the cable guide 404 of the distal end working portion 12 shown in FIG. A cable guide 430 is provided on both sides of the sliding plate 430b.

  The distance between the pair of insertion holes 430a and 430a (X-direction width of the sliding plate 430b in FIG. 21A) is substantially the same as the distance between the side surfaces 404a and 404b of the cable guide 404 shown in FIG. 14 (width of the notch 414). The interference portions E1a and E2a of the first cable E1 and the second cable E2 are inserted through the insertion holes 430a, respectively. Further, the sliding plate 430b is slidably disposed on the outer peripheral surface 161b of the tip support member 161 on the inner surface (Y2 side surface in FIG. 21A) in substantially the same manner as the cable guide 404 shown in FIG.

  Accordingly, in the distal end working portion 12a, the pair of insertion holes 430a and 430a function in substantially the same manner as the pair of side surfaces 404a and 404b constituting the cutout portion 414 of the cable guide 404 shown in FIG. For this reason, when the roll axis motion is applied to the tip motion unit 12a, the interference portions E1a and E2a are caused by the roll shaft motion, as in the case of the tip motion unit 12 shown in FIGS. 18A and 18B. While maintaining a relative position between the proximal end bundling portion 408a and the front end bundling portion 418 that relatively roll-rotate, one side is subjected to an excessive tensile load because the cable guide 430 is pressed and slidably rotated. The other is to avoid bending by the slidingly rotated cable guide 404. Of course, the insertion hole 430a may be formed as one hole through which the first cable E1 and the second cable E2 are simultaneously inserted.

  At this time, in the cable guide 430, since the first cable E1 and the second cable E2 can be held in the respective insertion holes 430a, even if the cable cover 406 (see FIG. 14) is omitted, the interference portion It is avoided that E1a and E2a bend during the roll axis operation and jump out. Of course, the cable guide 430 may also be covered with the cable cover 406 so that the cable E is completely accommodated and the exposure thereof can be reliably prevented.

  In the cable guide 430, the sliding plate 430b and the insertion hole 430a are illustrated as being linear (see FIG. 21A), but the entire cable guide 404 (see FIG. 14) has a ring-shaped and arc-shaped side surface 404a. As shown in FIG. 21B, it can be configured as a cable guide 431 including a sliding plate 431b having an arcuate (curved) shape and an insertion hole 431a. The sliding plate 431b corresponds to the arc shape of the outer peripheral surface 161b of the tip support member 161, and the insertion hole 430a corresponds to the bending shape of the interference portions E1a and E2a of the first cable E1 and the second cable E2.

  Therefore, in the cable guide 431, the arc-shaped sliding plate 431b makes the sliding on the outer peripheral surface 161b smoother, and the arc-shaped insertion hole 431a makes the sliding of the cable E smoother. The service life of the cable E can be improved, and the roll shaft operation at the distal end operating portion 12a is further smoothed.

  FIG. 22A is an enlarged exploded perspective view showing a main part of the wiring structure of the distal end working unit 12b according to the second modification.

  As shown in FIG. 22A, the distal end working unit 12b includes a cable guide (ring member) 440 having a configuration in which the distal end working unit 12 shown in FIG. 14 and the distal end working unit 12a shown in FIG. 21A are substantially combined. The cable guide 440 is configured in a C-ring shape that is substantially the same as the cable guide 404 in FIG. 14 and has insertion holes 430a and 430a that are substantially the same as the cable guide 430 shown in FIG. Have Of course, the insertion hole 430a may be formed as one hole through which the first cable E1 and the second cable E2 are simultaneously inserted. Also, as shown in FIG. 22B, the cable guide 440 also has an insertion hole 430a having an arc (curved) insertion hole 431a substantially similar to the cable guide 431 shown in FIG. You may comprise as the cable guide 441 made smoother.

  The distal end working portion 12b can obtain substantially the same operation and effect as when the cable guides 404 and 430 (431) are used, and the cable E is inserted into the insertion hole 430a (431a). The cover 406 can be omitted. Note that, as indicated by a two-dot chain line in FIG. 22A (FIG. 22B), the cable guide 440 (441) can be configured as a complete ring without providing the notch 414.

  FIG. 23A is an enlarged exploded perspective view showing a main part of the wiring structure of the distal end working unit 12c according to the third modification.

  As shown in FIG. 23A, the distal end working portion 12c includes a cable guide (ring member) 450 having a pair of grooves 450a and 450a on the inner surface side instead of the insertion hole 430a of the distal end working portion 12b shown in FIG. 22A. It is configured. Interference portions E1a and E2a of the first cable E1 and the second cable E2 are disposed in the grooves 450a and 450a, respectively. Further, as shown in FIG. 23B, the cable guide 450 also has an arcuate (curved) groove 451a, and the cable E slides more smoothly, similar to the cable guide 431 shown in FIG. 21B. The guide 451 may be configured.

  The distal end working portion 12c can also provide substantially the same operational effects as when the above-described cable guides 404, 430 (431), and 440 (441) are used, and the cable E is inserted into the groove portion 450a (451a). Depending on the configuration, the cable cover 406 can be omitted. Note that, as indicated by a two-dot chain line in FIG. 23A (FIG. 23B), the cable guide 450 (451) may also be configured as a complete ring without providing the notch 414. Of course, the groove portion 450a (451a) may be formed as one groove portion through which the first cable E1 and the second cable E2 are simultaneously inserted.

3. Description of Surgical Robot System The present invention can also be applied to a surgical robot system 500 as shown in FIG. 24, for example.

  The surgical robot system 500 includes an articulated robot arm 502 and a console (controller) 504 for controlling the driving of the robot arm 502. A mechanism similar to the manipulator 10 is provided at the tip of the robot arm 502. Is provided. Instead of the operation unit 14, a base portion 14 a that houses the drive unit 30 is fixed to the distal end portion 508 of the robot arm 502. The distal end operation unit 12 (12 a to 12 c) is connected to the base portion 14 a. The provided working unit 16 is detachably attached.

  The robot arm 502 may be any means that moves the working unit 16, and is not limited to a stationary type, but may be an autonomous moving type, for example. If the robot arm 502 has six or more independent joints (such as a rotation axis and a slide axis), the position and orientation of the working unit 16 can be arbitrarily set. A base portion 14 a constituting the manipulator 10 at the distal end is integrated with a distal end portion 508 of the robot arm 502. The robot arm 502 may be configured to operate under the action of the console 504, and to perform an automatic operation based on a program, an operation following a joystick 506 provided on the console 504, and a combination of these operations.

  The console 504 includes the function of the controller 29 described above. The console 504 is provided with two joysticks 506 as operation command units and a monitor 510. Although not shown, the two robot arms 502 can be individually operated by the two joysticks 506. The two joysticks 506 are provided at positions that can be easily operated with both hands. On the monitor 510, information such as an image by a flexible endoscope is displayed. The console 504 may take a configuration such as a table type or a control panel type.

  The joystick 506 can move up and down, move left and right, twist, and tilt, and can move the robot arm 502 according to these operations. The joystick 506 may be a master arm. Communication means between the robot arm 502 and the console 504 may be wired, wireless, network, or a combination thereof. The joystick 506 is provided with a trigger lever 36, and by operating the trigger lever 36, two rods 82a and 82b (an actuator coupled to an input unit operated manually) (not shown) 2 (not shown in FIG. 24) can be driven back and forth.

  Also in such a surgical robot system 500, the manipulator 10 can be easily used as a bipolar electric scalpel by providing the configuration in which the first cable E1 and the second cable E2 are provided.

  The present invention is not limited to the above-described embodiment, and it is needless to say that various configurations and processes can be adopted without departing from the gist of the present invention.

  For example, although the said embodiment demonstrated the structure used as a bipolar electric knife, the medical manipulator of this invention was demonstrated, this invention can also be applied to a monopolar electric knife.

  Therefore, for example, in order to make the manipulator 10 according to the embodiment function as a monopolar electric knife, the cable E may be configured by only one system (for example, the first cable E1), or the cable E may be configured by two systems. In this case, the first cable E1 and the second cable E2 are not necessarily insulated from each other. Further, when the cable E passes through the cable guides (404, 430, 431, 440, 441, 450, 451), the two systems of the first cable E1 and the second cable E2 are not necessary, one is an energizing member and the other is May not be a current-carrying member (the other may be a dummy cable, for example). That is, the dummy cable plays a role of driving a cable guide for smoothly bending and sliding the cable as the one energization member.

  Further, in the case of a monopolar electric knife, insulation between the gripper members 308 and 309 is not necessary, but one gripper member 308, the other gripper member 309, and the structural member / power transmission member are mutually connected. It is necessary to insulate (however, each of these members does not necessarily have to be insulated from a metal member that does not contact the body tissue).

  In the monopolar electric knife, for example, when the energization path is configured by a structural member / power transmission member, the metal portion (structural member / power transmission member) exposed at the distal end working unit does not directly contact the living tissue. Thus, an insulating (resin) cover or the like that covers the distal end working unit is required. On the other hand, when the present invention is applied to the monopolar electric knife with the above configuration, the cable is wired to the gripper member of the distal end working unit, and the insulating cover is simply insulated from the gripper and the structural member / power transmission member. There is an advantage that becomes unnecessary.

  Of course, the cable guide for supporting the interference portions E1a and E2a of the cable E may have a configuration other than the cable guides 404, 430 (431), 440 (441), and 450 (451). Any configuration that can be slidably supported on the outer peripheral surface 161b of the tip support member 161 while maintaining the relative positional relationship between the first cable E1 and the second cable E2 may be used.

  Moreover, as an electrode member, not only a gripper shape but also a scissor shape enables cutting with scissors while coagulation and hemostasis are performed.

  Furthermore, you may provide the opening part (cleaning window) which is not shown in the cylindrical surface of the cable cover 406, the front-end | tip support member 161, and a cable guide (404,430,431,440,441,450,451). By providing the opening, it is possible to easily wash the brushing and running water inside the tip working unit such as the space inside the tip support member 161 and the space between the cable cover 406 and the tip support member 161. Can do.

DESCRIPTION OF SYMBOLS 10 ... Manipulator 12, 12a-12c ... Tip operation part 14 ... Operation part 16 ... Working part 18 ... Shaft 30 ... Drive part 80a, 80b ... Wire 82a, 82b ... Rod 161 ... Tip support member 300 ... Gripper 308, 309 ... Gripper Member 402 ... Cable holding member 404, 430, 431, 440, 441, 450, 451 ... Cable guide 406 ... Cable cover 408a ... Base end bundling portion 418 ... Tip bundling portion E1 ... First cable E2 ... Second cable

Claims (11)

A hollow shaft,
A plurality of power transmission members inserted into the shaft;
A drive mechanism that is provided on one end of the shaft and drives the power transmission member to advance and retreat in the axial direction;
A tip operating portion that is provided on the other end side of the shaft and capable of rotating in the roll direction around at least the axial direction by a plurality of rotating bodies that are driven and rotated by the forward and backward drive of the power transmission member;
A medical manipulator comprising:
The distal end working unit is provided with a first electrode member capable of energizing a living body by being energized through a flexible first cable from a power source connected to the drive mechanism unit side on the distal end side. Have
The first electrode member is rotatably supported in the roll direction by a distal end support member that is rotatable in the roll direction, and the first cable is connected to the first electrode member from the proximal end side of the distal end working unit. 1 electrode member is slidably wired on the outer peripheral surface of the tip support member,
The tip operating section further includes a cable guide that slidably supports the first cable on the outer peripheral surface of the tip support member. The medical manipulator according to claim 1, wherein
The distal end working portion has a second electrode member on the distal end side thereof capable of energizing a living body with the first electrode member, and the second electrode member is insulated from the first cable. Can be energized from the power source via two cables,
The first electrode member and the second electrode member are supported by a tip support member that can rotate in the roll direction so as to be integrally rotatable in the roll direction, and the first cable and the second electrode member. The cable is slidably wired on the outer peripheral surface of the distal end support member from the proximal end side of the distal end working portion to the first electrode member and the second electrode member,
The medical manipulator, wherein the cable guide is slidably supported while maintaining a relative positional relationship between the first cable and the second cable on the outer peripheral surface of the tip support member. The medical manipulator according to claim 1, wherein
Furthermore, having a dummy cable slidably wired on the outer peripheral surface of the tip support member,
The medical manipulator, wherein the cable guide is slidably supported while maintaining a relative positional relationship between the first cable and the dummy cable on the outer peripheral surface of the tip support member. A hollow shaft,
A plurality of power transmission members inserted into the shaft;
A drive mechanism that is provided on one end of the shaft and drives the power transmission member to advance and retreat in the axial direction;
A tip operating portion that is provided on the other end side of the shaft and capable of rotating in the roll direction around at least the axial direction by a plurality of rotating bodies that are driven and rotated by the forward and backward drive of the power transmission member;
A medical manipulator comprising:
The distal end working unit is energized on the distal end side thereof from a power source connected to the drive mechanism unit side through a flexible first cable and a second cable insulated from each other. And having a pair of electrode members capable of energizing the living body,
The pair of electrode members are supported by a tip support member that is rotatable in the roll direction so as to be integrally rotatable in the roll direction, and the first cable and the second cable are in the tip motion. Wiring is slidable on the outer peripheral surface of the tip support member from the base end side of the part to the pair of electrode members,
The distal end working unit further includes a cable guide that slidably supports the first cable and the second cable while maintaining a relative positional relationship on the outer peripheral surface of the distal end support member. Medical manipulator. The medical manipulator according to claim 4, wherein
The first cable and the second cable are held at a distal end side from the cable guide by a first bundling portion provided on the distal end support member, and a proximal end side from the cable guide does not rotate in the roll direction. A medical manipulator that is held by a second bundling portion provided on a holding member. The medical manipulator according to claim 4 or 5,
The cable guide is a ring member that is slidably disposed on the outer peripheral surface of the tip support member and has a notch portion formed in part in the circumferential direction.
The first cable and the second cable are routed along one side surface from the circumferential direction of the ring member along the other side surface through the notch portion, and are also routed along each opposing side surface of the notch portion. A medical manipulator characterized by that. The medical manipulator according to claim 6, wherein
The first cable that surrounds the first cable, the second cable, and the ring member disposed on the outer peripheral surface of the tip support member, and is wired along the side surface of the ring member on the inner surface thereof And a medical manipulator comprising a cable cover for slidably holding the second cable. The medical manipulator according to claim 4 or 5,
The cable guide is slidably disposed on the outer peripheral surface of the tip support member, and has a hole through which the first cable and the second cable can be inserted.
The medical manipulator, wherein the first cable and the second cable are wired between the first binding portion and the second binding portion through the hole portion. The medical manipulator according to claim 4 or 5,
The cable guide is a ring member that is slidably disposed on the outer peripheral surface of the tip support member and is formed with a hole or a groove through which the first cable and the second cable can be inserted.
The medical manipulator, wherein the first cable and the second cable are wired from one circumferential side to the other side of the ring member through the hole or the groove. The medical manipulator according to any one of claims 4 to 9,
The pair of electrode members are pivotally supported so as to be openable and closable by a shaft member provided on the tip support member,
Furthermore, it has a pair of current-carrying members that are not interlocked with the opening / closing operation of the pair of electrode members by being fixed to the tip support member, and that come into contact with the pair of electrode members so as to be energized,
The medical manipulator, wherein the first cable and the second cable are respectively connected to the pair of energization members. The medical manipulator according to any one of claims 4 to 10,
The distal end working unit is further capable of swinging in the yaw direction or the pitch direction intersecting the axial direction by a swing shaft provided on the base end side of the pair of electrode members.
The swinging operation is driven by a pair of the power transmission members that advance and retreat in opposite directions among the plurality of power transmission members, and a part of the first cable and the second cable are the pair. A medical manipulator characterized by being fixed to each power transmission member.

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