JP3166092U - Arm device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an arm device in which an arm can be easily rotated manually. An arm device 10 is attached to a foundation arm 13, a connecting unit 14 attached to the tip of the arm, an intermediate arm 15 connected to the foundation arm 13 via the unit, and the tip of the arm. The connecting unit 16 is provided, an intermediate arm 17 connected to the intermediate arm 15 via this unit, an interlocking member 21 for interlocking each connecting unit, and the like. The connecting unit 14 locks the rotation of the intermediate arm 15 with respect to the foundation arm 13. The connecting unit 14 includes an unlocking lever 22 that unlocks the circuit of the intermediate arm 15 with respect to the foundation arm 13. The connecting unit 16 locks the rotation of the intermediate arm 17 with respect to the intermediate arm 15. The connecting unit 16 is interlocked with the connecting unit 14 by the interlocking member 21, and allows the intermediate arm 17 to rotate with respect to the intermediate arm 15. [Selection diagram] Fig. 1

Description

  The present invention relates to an arm device in which a plurality of arms are connected in a row.

  In a medical facility such as a hospital or a clinic, an arm device that holds a medical device such as a ventilator or a lighting device that illuminates a hand during surgery in a desired position is used. The arm device is provided between two arms arranged in a row and between these two arms, and one arm can be rotated up and down around a horizontal rotation axis with respect to the other arm. A connecting unit (hinge) that connects to the arm and a holding portion that is provided at the tip of an arm that rotates in the vertical direction and holds the medical device (see, for example, Patent Document 1).

  According to this arm device, the medical device held at the tip of the arm can be easily moved to a desired position by manually rotating the arm. After the hand is released from the arm device, the rotation of the arm is restricted by the friction of the connecting portion, and the posture of the arm is maintained. As a result, the medical device is held in a desired position.

Japanese Patent Application Laid-Open No. 07-016272

  In such an arm device, it is necessary to set the frictional force at the connecting portion to a magnitude that does not lose the gravity of the medical device so that the arm does not rotate unexpectedly. However, in order to support holding a heavy medical device, the friction force at the connecting portion is set to be large, but in this case, it is difficult to manually rotate the arm. Problems arise.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide an arm device that can be easily rotated manually.

  (1) The present invention is a plurality of arms connected in a row and a plurality of units that rotatably connect the arms, and includes a gear and a meshing member that meshes with the gear, and the meshing member is the gear. A plurality of connecting units that restrict the bi-directional rotation of the arm when meshing with each other, and allow the bi-directional rotation of the arm when the meshing member is released from meshing with the gear; An interlocking member that is arranged along the arm and connects the meshing members for each of the coupling units and interlocks the meshing members of each of the coupling units with each other, and is provided in the arm or the coupling unit to hold the medical device And an arm device.

  According to the present invention, since the bidirectional rotation of the arm is restricted by the connecting unit, even if a heavy medical device is held or fixed at the tip of the arm, it is unexpectedly caused by the weight of the medical device. The arm does not rotate. Further, by releasing the restriction by the connecting unit, bi-directional rotation of the arm is permitted, and the arm can be manually rotated. Furthermore, since the interlocking member is provided, it is possible to simultaneously release the meshing of the meshing members in all the coupling units to the gears by canceling the meshing of the meshing members in one of the coupling units.

  (2) The present invention is also the arm device according to (1) above, wherein the rotation shaft of the connection unit is arranged in a horizontal direction.

  (3) The present invention also includes an operation unit that is provided in the connection unit that is closest to the holding unit among the plurality of connection units, and that releases the meshing of the meshing member with the gear. The arm device according to (1) or (2) above, which is characterized.

  (4) The present invention is also any one of the above (1) to (3), wherein the arm is formed hollow, and the interlocking member is a thread-like member that passes through the inside of the arm. Arm device.

  According to the arm device described in any one of (1) to (4) of the present invention, it is easy to manually rotate the arm.

It is a front view of the arm device of a 1st embodiment concerning the present invention. It is an external appearance perspective view of the connection unit in the arm apparatus shown in FIG. It is a disassembled perspective view of the connection unit shown in FIG. It is sectional drawing of the connection unit shown in FIG. 2, and shows the state which controlled rotation of the arm. It is sectional drawing of the connection unit shown in FIG. 2, and shows the state which permitted rotation of the arm. It is a disassembled perspective view of the connection unit in the arm apparatus shown in FIG. 1, and shows a connection unit different from the connection unit shown in FIG. It is sectional drawing of the connection unit shown in FIG. 6, and shows the state which controlled rotation of the arm. It is sectional drawing of the connection unit shown in FIG. 6, and shows the state which permitted rotation of the arm. It is a front view of the arm apparatus of 2nd Embodiment which concerns on this invention. It is a front view of the arm apparatus of 3rd Embodiment which concerns on this invention.

  Hereinafter, arm devices according to first to third embodiments of the present invention will be described in detail with reference to the drawings.

  [First Embodiment] First, the configuration of an arm device 10 according to a first embodiment will be described with reference to FIGS. FIG. 1 is a front view of the arm device 10. FIG. 2 is an external perspective view of the connecting unit 14. FIG. 3 is an exploded perspective view of the connecting unit 14. FIG. 4 is a cross-sectional view of the connecting unit 14 and shows a state where the rotation of the intermediate arm 15 is restricted. FIG. 5 is a cross-sectional view of the connecting unit 14 and shows a state in which the rotation of the intermediate arm 15 is permitted. FIG. 6 is an exploded perspective view of the connecting unit 16. FIG. 7 is a cross-sectional view of the connecting unit 16 and shows a state in which the rotation of the intermediate arm 17 is restricted. FIG. 8 is a cross-sectional view of the connecting unit 16 and shows a state in which the rotation of the intermediate arm 17 is permitted.

  In each of the drawings, illustration of components and the like that are not necessary for the description is omitted as appropriate for simplification of the drawings. In the following description, the right direction and the left direction refer to directions in the drawings unless otherwise specified.

  The arm device 10 shown in FIG. 1 holds a medical device (not shown) such as a ventilator or a lighting device that illuminates the hand in a surgical facility in a medical facility such as a hospital or a clinic at a desired position. It is operated manually.

  The arm device 10 includes a base 11 that serves as a foundation, a rotary base 12 that is rotatably attached to the upper surface of the base 11 about a vertical axis, and a base arm 13 that is attached to the rotary base 12. A connecting unit 14 attached to the tip of the base arm 13, an intermediate arm 15 connected to the base arm 13 via the connecting unit 14, and a connecting unit 16 attached to the tip of the intermediate arm 15. The intermediate arm 17 connected to the intermediate arm 15 via the connection unit 16, the connection unit 18 attached to the tip of the intermediate arm 17, and the tip connected to the intermediate arm 17 via the connection unit 18 An arm 19, a holding unit 20 fixed to the distal arm 19 and detachably holding a medical device (not shown); The interlocking member 21 that links 6, 18, and a. Hereinafter, each component will be described.

  (Arm) The base arm 13, the intermediate arms 15 and 17, and the tip arm 19 are formed in a hollow shape with a stainless steel square tube or the like and arranged in a row. These basic arm 13, intermediate arms 15, 17, and tip arm 19 are connected so that the adjacent arms can be freely rotated by any one of connection units 14, 16, 18.

  The base arm 13 has a proximal end attached to the turntable 12. The basic arm 13 is integrated with the rotary table 12 and rotates about the vertical axis.

  The intermediate arm 15 is connected to the base arm 13 via the connection unit 14, and thus rotates in the vertical direction with respect to the base arm 13 around a horizontal rotation axis. The intermediate arm 15 is integrated with the rotary table 12 and the base arm 13 and rotates about the vertical axis.

  The intermediate arm 17 is connected to the intermediate arm 15 via the connecting unit 16, and thus rotates in the vertical direction with respect to the intermediate arm 15 around a horizontal rotation axis. This intermediate arm 17 is united with the turntable 12, the base arm 13, and the intermediate arm 15, and rotates about the vertical axis.

  The distal arm 19 is connected to the intermediate arm 17 via the connecting unit 18, and thus rotates in the vertical direction with respect to the intermediate arm 17 around a horizontal rotation axis. The tip arm 19 is united with the turntable 12, the base arm 13, and the intermediate arms 15 and 17, and rotates about the vertical axis.

  (Holding unit) The holding unit 20 is configured such that the intermediate arm 15 rotates up and down around the horizontal rotation axis with respect to the base arm 13, and the intermediate arm 17 rotates in the horizontal direction with respect to the intermediate arm 15. It moves in the vertical direction by rotating in the vertical direction around the moving axis, or by rotating the tip arm 19 in the vertical direction around the horizontal axis relative to the intermediate arm 17. The holding unit 20 pivots about the vertical axis by rotating the pivot base 12, the base arm 13, the intermediate arms 15 and 17, and the tip arm 19 together to rotate about the vertical axis.

  (Connection Unit) The connection unit 14 connects the intermediate arm 15 to the base arm 13 so as to be rotatable about a horizontal rotation axis. The connecting unit 14 locks and restricts the bi-directional rotation of the intermediate arm 15 with respect to the base arm 13 by a lock mechanism 31 (see FIG. 3) described later. The connection unit 14 includes a release lever 22 that unlocks the bidirectional rotation of the intermediate arm 15 relative to the base arm 13. The coupling unit 14 allows the intermediate arm 15 to rotate in both directions with respect to the base arm 13 by operating the lock release lever 22 in a predetermined direction.

  The connection unit 16 connects the intermediate arm 17 to the intermediate arm 15 so as to be rotatable about a horizontal rotation axis. The connecting unit 16 locks and restricts the bi-directional rotation of the intermediate arm 17 with respect to the intermediate arm 15 by a lock mechanism 31 (see FIG. 6) described later. The connecting unit 16 is interlocked with the interlock release member 22 being operated in a predetermined direction by the interlocking member 21 and allows the intermediate arm 17 to rotate in both directions with respect to the intermediate arm 15.

  The connection unit 18 connects the tip arm 19 to the intermediate arm 17 so as to be rotatable about a horizontal rotation axis. The connecting unit 18 locks and restricts the bi-directional rotation of the tip arm 19 with respect to the intermediate arm 17 by a lock mechanism (not shown) described later. The connecting unit 18 is interlocked with the interlock member 21 when the unlocking lever 22 in the connecting unit 14 is operated in a predetermined direction, and allows the tip arm 19 to rotate in both directions with respect to the intermediate arm 17.

  (Interlocking member) The interlocking member 21 is a thread-like member such as a fishing line, and is disposed along the intermediate arms 15 and 17. Specifically, the interlocking member 21 is connected from the inside of the connecting unit 14 to the inside of the connecting unit 16 through the inside of the intermediate arm 15, and from the inside of the connecting unit 16 to the inside of the intermediate arm 17. 18 is connected to the inside. The interlocking member 21 is pulled when the lock release lever 22 is operated in a predetermined direction, and the restriction of the rotation of the arm by the connection units 16 and 18 and the release thereof are restricted by the restriction of the rotation of the arm by the connection unit 14. Interlock with the release.

  As shown in FIGS. 2 to 5, the connecting unit 14 includes a bottomed cylinder 25 fixed to the base arm 13, a bottomed cylinder 26 fixed to the intermediate arm 15, and the bottomed cylinders 25, 26. A cylinder 27 interposed therebetween, a shaft bolt 28 for rotatably attaching the bottomed cylinder 25 to the bottomed cylinder 26, a gear 29 fixed to the bottomed cylinder 26, the gear 29 and the bottomed cylinder 26 A cylindrical spacer 30 interposed between them, a meshing member 32 that forms a lock mechanism 31 together with a gear 29, a coil spring 33 that biases this meshing member 32 toward the gear 29, and a meshing member 32. Unlocking lever 22, guide member 34 for guiding the interlocking member 21, fixing bolt 35 for fixing the spacer 30 to the bottomed cylinder 26, and fixing bolt for fixing the gear 29 to the spacer 30. 6, a shaft bolt 37 for attaching the engagement member 32 to the bottomed cylinder 25, a fixing bolt 38 for fixing the guide member 34 and the lock release lever 22 to the engagement member 32, and the base arm 13 for fixing the bottomed cylinder 25. The fixing member 39 and the fixing bolt 40, and the fixing member 41 and the fixing bolt 42 for fixing the intermediate arm 15 to the bottomed cylinder 26 are provided.

  The bottomed cylinder 25 has a shaft hole 25a for the shaft bolt 28, a bolt hole 25b for the shaft bolt 37, a bolt hole 25c for the fixing bolt 40, and a fixing hole 25d to which one end of the coil spring 33 is fixed. , Is formed. The bottomed cylinder 26 is formed with a bolt hole 26 a for the fixing bolt 35 and a bolt hole 26 b for the fixing bolt 42.

  The cylinder 27 includes a large-diameter portion 27a having an outer diameter that is slightly smaller than the inner diameter of the bottomed cylinders 25 and 26, and a small-diameter portion having an outer diameter that is slightly smaller than the outer diameter of the large-diameter portion 27a. 27b. The cylinder 27 is formed with a notch 27c in the small diameter portion 27b for allowing the lock release lever 22 to escape. The cylinder 27 constitutes a casing together with the bottomed cylinders 25 and 26 by covering the bottomed cylinders 25 and 26 on both sides thereof. Between the outer peripheral surface of the small diameter portion 27b and the inner peripheral surface of the bottomed cylinder 25, a gap (reference numeral omitted) through which the interlocking member 21 passes is formed.

  The gear 29 is a gear in which square-shaped teeth are formed over the entire circumference. When the meshing member 32 is meshed with the gear 29, bidirectional rotation is restricted. On the other hand, the gear 29 is allowed to rotate in both directions when the meshing member 32 is disengaged. The gear 29 is formed with a bolt hole 29 a for the fixing bolt 36 and a bolt hole 29 b for the shaft bolt 28.

  The spacer 30 has a bolt hole 30a for the fixing bolt 35 formed on the surface on the bottomed cylinder 26 side, and a bolt hole 30b for the fixing bolt 36 formed on the surface on the gear 29 side.

  The fixing bolt 35 is screwed in the order of the bolt hole 26a and the bolt hole 30a, thereby fixing the spacer 30 to the bottomed cylinder 26. The fixing bolt 36 fixes the gear 29 to the spacer 30 by being screwed in the bolt hole 29a and the bolt hole 30b in this order. Thereby, the gear 29 is fixed to the bottomed cylinder 26 via the spacer 30.

  The shaft bolt 28 is a medium bolt whose front end portion is threaded and whose base end portion is not threaded. The shaft bolt 28 is inserted into the shaft hole 25a and then screwed into the bolt hole 29b, thereby fixing the bottomed cylinder 25 to the gear 29 so as to be rotatable. Thereby, the bottomed cylinder 25 is fixed to the bottomed cylinder 26 so as to be rotatable.

  The meshing member 32 meshes with the gear 29 to lock and restrict the bidirectional rotation of the gear 29. A shaft hole 32 a for the shaft bolt 37, a bolt hole 32 b for the fixing bolt 38, and a fixing hole 32 c to which the other end of the coil spring 33 is fixed are formed in the meshing member 32. The lock release lever 22 is formed with a bolt hole 22a for the fixing bolt 38.

  The guide member 34 has a substantially semicircular plate shape. The guide member 34 is integrally formed with a protrusion 34a around which the interlocking member 21 is wound, and a groove 34b for guiding the interlocking member 21 is formed along the entire arc from the protrusion 34a. A bolt hole 34c for the fixing bolt 38 is formed in the guide member 34.

  The shaft bolt 37 is a special bolt in which the base end portion is threaded and the tip end portion is not threaded. The shaft bolt 37 is screwed into the bolt hole 25 b from the outside of the bottomed cylinder 25, thereby causing the tip portion to protrude inside the bottomed cylinder 25. The tip end portion of the shaft bolt 37 constitutes the rotation shaft of the meshing member 32. The meshing member 32 rotates around a shaft bolt 37 inserted into the shaft hole 32a. The meshing member 32 is rotated by the urging force of the coil spring 33 and is meshed with the gear 29.

  The fixing bolt 38 is screwed in the order of the bolt hole 34c, the bolt hole 22a, and the bolt hole 32b, thereby fixing the guide member 34 to the meshing member 32 together with the lock release lever 22. As a result, the engagement member 32 is rotated against the urging force of the coil spring 33 by the operation of the lock release lever 22, and the engagement of the engagement member 32 with the gear 29 can be released, and the guide member 34. Rotates, and the interlocking member 21 can be pulled.

  The fixing member 39 includes a first piece (reference number omitted), a second piece (reference number omitted) in which one end of the first piece is bent 90 degrees and the foundation arm 13 is fixed, and the other end of the first piece is second. A third piece (reference numeral omitted) which is bent 90 degrees on the opposite side of the piece and to which the bottomed cylinder 25 is fixed, and is configured in a crank shape. A bolt hole 39 a for the fixing bolt 40 is formed in the second piece of the fixing member 39. A bolt hole 39 b for the fixing bolt 40 is formed in the third piece of the fixing member 39. A bolt hole 13 a for the fixing bolt 40 is formed in the foundation arm 13.

  The fixing bolt 40 is screwed in the order of the bolt hole 39a and the bolt hole 13a, thereby fixing the fixing member 39 to the foundation arm 13, and is screwed in the order of the bolt hole 39b and the bolt hole 25c so that the fixing member 39 is provided. Fix to the bottom cylinder 25. Thereby, the foundation arm 13 is fixed to the bottomed cylinder 25.

  The fixing member 41 includes a first piece (reference number omitted), a second piece (reference number omitted) in which one end of the first piece is bent 90 degrees and the intermediate arm 15 is fixed, and the other end of the first piece is second. A third piece (reference numeral omitted) which is bent 90 degrees on the opposite side of the piece and to which the bottomed cylinder 26 is fixed, and is configured in a crank shape. A bolt hole 41 a for the fixing bolt 42 is formed in the second piece of the fixing member 41. A bolt hole 41 b for the fixing bolt 42 is formed in the third piece of the fixing member 41. A bolt hole 15 a for the fixing bolt 42 is formed in the intermediate arm 15.

  The fixing bolt 42 is screwed in the order of the bolt hole 41a and the bolt hole 15a, thereby fixing the fixing member 41 to the intermediate arm 15, and is screwed in the order of the bolt hole 41b and the bolt hole 26b so that the fixing member 41 is provided. Fix to the bottom cylinder 26. As a result, the intermediate arm 15 is fixed to the bottomed cylinder 26.

  The interlocking member 21 is guided by the groove 34b of the guide member 34 with the protrusion 34a of the guide member 34 as a base end, and is guided to the intermediate arm 15 through the gap between the bottomed cylinder 25 and the small diameter portion 27b of the cylinder 27 from below. It is burned.

  As shown in FIGS. 6 to 8, the connecting unit 16 includes a guide member 44 instead of the guide member 34 as compared with the connecting unit 14. Further, the connecting unit 16 does not include the lock release lever 22. 7 and 8, a part of the interlocking member 21 is not shown. Specifically, the portion of the guide member 44 that is guided to the intermediate arm 17 through the gap between the bottomed cylinder 25 and the small diameter portion 27b of the cylinder 27 from below is omitted.

  The guide member 44 is integrally formed with two protrusions 44a for winding the interlocking member 21, and a groove 44b for guiding the interlocking member 21 from one protrusion 44a to the other protrusion 44a along the entire arc. Is formed. A bolt hole 44c for the fixing bolt 38 is formed in the guide member 44.

  The fixing bolt 38 is screwed in the order of the bolt hole 44c and the bolt hole 32b, thereby fixing the guide member 44 to the meshing member 32. Thereby, when the interlocking member 21 is pulled, the meshing member 32 rotates against the urging force of the coil spring 33, and the meshing of the meshing member 32 with the gear 29 can be released. Further, the guide member 44 rotates together with the meshing member 32, and the interlocking member 21 (part not shown) guided to the intermediate arm 17 can be pulled.

  A bolt hole 15 b for the fixing bolt 40 is formed in the intermediate arm 15. The fixing bolt 40 is screwed in the order of the bolt hole 39a and the bolt hole 15b, thereby fixing the fixing member 39 to the intermediate arm 15, and is screwed in the order of the bolt hole 39b and the bolt hole 25c so that the fixing member 39 is provided. Fix to the bottom cylinder 25. As a result, the intermediate arm 15 is fixed to the bottomed cylinder 25.

  A bolt hole 17 a for the fixing bolt 42 is formed in the intermediate arm 17. The fixing bolt 42 is screwed in the order of the bolt hole 41a and the bolt hole 17a, thereby fixing the fixing member 41 to the intermediate arm 17, and is screwed in the order of the bolt hole 41b and the bolt hole 26b so that the fixing member 41 is provided. Fix to the bottom cylinder 26. Thereby, the intermediate arm 17 is fixed to the bottomed cylinder 26.

  The interlocking member 21 is guided from the intermediate arm 15 through the gap between the bottomed cylinder 25 and the small diameter portion 27b of the cylinder 27 to the guide member 44 from above the gap. Then, the interlocking member 21 is guided through the groove 44b of the guide member 44, and is sequentially wound around the lower protrusion 44a and the upper protrusion 44a. The interlocking member 21 is guided in the groove 44 b of the guide member 44, and is guided to the intermediate arm 17 through the gap between the bottomed cylinder 25 and the small diameter portion 27 b of the cylinder 27 from below.

  The above connection unit 14 functions as an operation unit that releases the meshing of the meshing member 32 with the gear 29 with the lock release lever 22 as a main component. In addition, the specific structure of the connection unit 18 is the same as that of the connection unit 16, and the description is abbreviate | omitted.

  Next, operation | movement of the arm apparatus 10 is demonstrated based on FIG.4, FIG.5, FIG.7 and FIG.

  As shown in FIG. 4, the meshing member 32 in the connecting unit 14 is biased toward the gear 29 by the coil spring 33 and meshes with the gear 29. Accordingly, the bottomed cylinder 26 (see FIGS. 2 and 3) to which the gear 29 is attached and the intermediate arm 15 is fixed has the bottomed cylinder to which the meshing member 32 is attached and the foundation arm 13 is fixed. Bidirectional rotation is locked and restricted with respect to the cylinder 25.

  Further, as shown in FIG. 7, the meshing member 32 in the connecting unit 16 is urged toward the gear 29 by the coil spring 33 and meshes with the gear 29. Accordingly, the bottomed cylinder 26 (see FIG. 6) to which the gear 29 is attached and the intermediate arm 17 is fixed is replaced with the bottomed cylinder 25 to which the engagement member 32 is attached and the intermediate arm 15 is fixed. On the other hand, bidirectional rotation is locked and restricted.

  When the lock release lever 22 is operated in a predetermined direction as shown in FIG. 5 from the state shown in FIG. 4 where the meshing member 32 in the coupling unit 14 is meshed with the gear 29, the meshing member 32 is attached to the coil spring 33. It rotates against the force and the meshing of the meshing member 32 with the gear 29 is released. Accordingly, the bottomed cylinder 26 (see FIGS. 2 and 3) to which the gear 29 is attached and the intermediate arm 15 is fixed has the bottomed cylinder to which the meshing member 32 is attached and the foundation arm 13 is fixed. The cylinder 25 is unlocked in both directions and is allowed to rotate in both directions. The guide member 34 rotates integrally with the meshing member 32 and pulls the interlocking member 21.

  The interlocking member 21 has a protrusion 34 a of the guide member 34 in the connection unit 14 as a base end, a gap between the bottomed cylinder 25 in the connection unit 14 and the small diameter portion 27 b of the cylinder 27, the intermediate arm 15, and a bottomed cylinder in the connection unit 16. 25 and the small diameter portion 27b of the cylinder 27 are passed through the gap 27 and led to the guide member 44 in the connecting unit 16. Similarly to the flow up to the connection unit 16, the interlocking member 21 is guided from the connection unit 16 through the intermediate arm 17 to the connection unit 18.

  Therefore, when the guide member 34 pulls the interlocking member 21 as shown in FIG. 5, the guide member 44 rotates as shown in FIG. The meshing member 32 in the connection unit 16 rotates integrally with the guide member 44, and the meshing of the meshing member 32 with the gear 29 in the connection unit 16 is released. Accordingly, the bottomed cylinder 26 (see FIG. 6) to which the gear 29 is attached and the intermediate arm 17 is fixed is replaced with the bottomed cylinder 25 to which the engagement member 32 is attached and the intermediate arm 15 is fixed. On the other hand, the bi-directional rotation is unlocked and the bi-directional rotation is allowed.

  Similarly, the meshing member 32 in the coupling unit 18 is disengaged from the gear 29. As a result, the bottomed cylinder to which the tip arm 19 is fixed is unlocked in both directions relative to the bottomed cylinder to which the intermediate arm 17 is fixed, and bidirectional rotation is allowed. .

  Thus, according to the arm device 10, the bidirectional rotation of the intermediate arm 15 with respect to the base arm 13, the bidirectional rotation of the intermediate arm 17 with respect to the intermediate arm 15, and the bidirectional movement of the tip arm 19 with respect to the intermediate arm 17. Is controlled by being locked by the connecting units 14, 16, 18, so that even if a heavy medical device (not shown) is held at the distal end of the distal arm 19, Any one of the intermediate arms 15 and 17 and the tip arm 19 does not rotate unexpectedly due to gravity.

  Further, by operating the lock release lever 22 to release the restriction by the connecting units 14, 16, 18, the bidirectional rotation of the intermediate arm 15 relative to the basic arm 13 and the bidirectional movement of the intermediate arm 17 relative to the intermediate arm 15 are performed. And bi-directional rotation of the tip arm 19 with respect to the intermediate arm 17 are allowed, and the intermediate arms 15, 17 and tip arm 19 can be manually rotated in both directions. The medical device (not shown) held in the can be easily moved to a desired position.

  Furthermore, since the interlocking member 21 is provided, the engagement of the meshing members 32 with the gears 29 in all the connecting units 14, 16, 18 can be simultaneously released by operating the lock release lever 22 in one place.

  [Second Embodiment] Next, the configuration of an arm device 46 according to a second embodiment will be described with reference to FIG. FIG. 9 is a front view of the arm device 46.

  As shown in FIG. 9, the arm device 46 includes a rotating table 47 instead of the rotating table 12, the basic arm 13, and the connecting unit 14 as compared with the arm device 10 of the first embodiment.

  Like the turntable 12, the turntable 47 is attached to be rotatable about a vertical axis. The turntable 47 includes a connection unit 48 similar to the connection unit 14. The connecting unit 48 connects the intermediate arm 15 to the turntable 47 so as to be rotatable about a horizontal turning shaft. The connecting unit 48 locks and restricts the bi-directional rotation of the intermediate arm 15 with respect to the rotation table 47. The connection unit 48 includes a lock release lever 49 that releases the bidirectional rotation lock of the intermediate arm 15 with respect to the rotation table 47. The coupling unit 48 allows the bidirectional movement of the intermediate arm 15 with respect to the rotation base 47 by operating the lock release lever 49 in a predetermined direction.

  [Third Embodiment] Next, the configuration of an arm device 51 according to a third embodiment will be described with reference to FIG. FIG. 10 is a front view of the arm device 51.

  As shown in FIG. 10, the arm device 51 includes connection units 52 to 54 and an interlocking member 55 instead of the connection units 14, 16, 18 and the interlocking member 21 as compared with the arm device 10 of the first embodiment. ing.

  The connection unit 52 does not include the lock release lever 22 as compared with the connection unit 14 of the first embodiment. The connection unit 52 allows a bi-directional rotation of the intermediate arm 15 with respect to the base arm 13 by operating a lock release lever 56 (described later) in the connection unit 54 in a predetermined direction.

  The connection unit 53 allows a bidirectional rotation of the intermediate arm 17 with respect to the intermediate arm 15 by operating a lock release lever 56 (described later) in the connection unit 54 in a predetermined direction.

  Compared with the connection unit 18 of the first embodiment, the connection unit 54 includes a lock release lever 56 that releases the bidirectional rotation lock of the distal arm 19 with respect to the intermediate arm 17.

  The interlocking member 55 is disposed along the intermediate arms 17 and 15 similarly to the interlocking member 21 of the first embodiment. Specifically, the interlocking member 55 is connected from the inside of the connecting unit 54 to the inside of the connecting unit 53 through the inside of the intermediate arm 17 and from the inside of the connecting unit 53 to the inside of the intermediate arm 15. 52 is connected to the inside. The interlocking member 55 is pulled when the lock release lever 56 is operated in a predetermined direction, and the restriction of the rotation of the arm by the connection units 53 and 52 and the release thereof are restricted by the restriction of the rotation of the arm by the connection unit 54 and Interlock with the release.

  As described above, according to the arm device 51, the connection unit 54 having the closest distance to the holding unit 20 among the plurality of connection units 52 to 54 includes the lock release lever 56. The lock release lever 56 can be operated while operating the medical device (not shown) or prior to operating the medical device. Thus, the medical device can be moved to a desired position while operating the medical device or prior to operating the medical device.

  The present invention is not limited to the above embodiments, and various modifications can be made without departing from the spirit and technical idea of the present invention.

  That is, in each said embodiment, you may make it provide the holding | maintenance part which hold | maintains a medical device so that attachment or detachment is not provided without the holding | maintenance part 20 which hold | maintains a medical device so that attachment or detachment is possible. Moreover, you may make it a holding | maintenance part be provided in a connection unit.

  Or in each said embodiment, the quantity of each component can be changed suitably. For example, the number of intermediate arms, connecting units, etc. can be mentioned.

DESCRIPTION OF SYMBOLS 10 Arm apparatus 11 Base 12 Rotating base 13 Base arm 14 Connection unit 15 Intermediate arm 16 Connection unit 17 Intermediate arm 18 Connection unit 19 Tip arm 20 Holding part 21 Interlocking member 22 Lock release lever 22a Bolt hole 25 Bottomed cylinder 25a Shaft hole 25b Bolt hole 25c Bolt hole 25d Fixing hole 26 Bottomed cylinder 26a Bolt hole 26b Bolt hole 27 Cylindrical 27a Large diameter part 27b Small diameter part 27c Notch 28 Shaft bolt 29 Gear 29a Bolt hole 29b Bolt hole 30 Spacer 30a Bolt hole 30b Bolt hole 30b 31 Locking mechanism 32 Meshing member 32a Shaft hole 32b Bolt hole 32c Fixing hole 33 Coil spring 34 Guide member 34a Projection 34b Groove 34c Bolt hole 35 Fixing bolt 36 Fixing bolt 37 Fixing bolt 37 Fixing bolt 38 Fixing bolt G 39 Fixing member 39a Bolt hole 39b Bolt hole 40 Fixing bolt 41 Fixing member 41a Bolt hole 41b Bolt hole 42 Fixing bolt 44 Guide member 44a Projection 44b Groove 44c Bolt hole 46 Arm device 47 Rotating base 49 Lock release lever 51 Arm device 52 ~ 54 Connecting unit 55 Interlocking member 56 Lock release lever

Claims (4)

A plurality of arms connected in a row;
A plurality of units for rotatably connecting the arm, having a gear and a meshing member that meshes with the gear, and restricting bi-directional rotation of the arm when the meshing member meshes with the gear; A plurality of connecting units that permit bidirectional rotation of the arm when the meshing member is disengaged from the gear;
An interlocking member arranged along the arm to connect the engagement members for each of the connection units, and to interlock the engagement members for each of the connection units;
A holding part that is provided in the arm or the connecting unit and holds a medical device,
Arm device. The rotation axis of the connecting unit is disposed in a horizontal direction,
The arm device according to claim 1. Among the plurality of connection units, the operation unit is provided in the connection unit that is closest to the holding unit and releases the meshing of the meshing member with the gear.
The arm device according to claim 1 or 2. The arm is formed hollow,
The interlocking member is a thread-like member that passes through the inside of the arm,
The arm apparatus in any one of Claims 1-3.

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