JP2613801B2 - Surgical instrument support device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention provides an arbitrary surgical instrument such as a hook for rejecting an organ in order to secure a surgical field (a visual field at the time of surgery and a space necessary for operation). The present invention relates to a surgical instrument support device that is fixed and held in a state.

[Conventional technology]

Conventionally, at the time of surgery, in order to secure an operation field, organs are rejected by hooks or the like, and as a device for fixing and holding the hooks and the like, there is a "surgery hook fixing device" disclosed in Japanese Patent Publication No. 63-37667. .

The first arm unit and the second arm unit of the device
With an adjusting screw that is rotatable about the axis of the arm and rotatable about an axis orthogonal to the axis and rotatable about the axis of the second arm body, and tightens and fixes both arm bodies. Of the second arm and a hook attached to the tip of the second arm.
The arm is rotatable about the axis of the arm and is rotatable about an axis perpendicular to the axis, and is connected to the second arm by a second joint with an adjusting screw for tightening and fixing the hook. With such a configuration, the hook can be fixed to an arbitrary spatial position.

[Problems to be solved by the invention]

However, the above-described conventional apparatus has the following problems.

(1) Since the second arm is rotated by the first and second joints to position the hook in an arbitrary space, depending on the spatial position, the second arm may be close to the surgeon or may be operated. Located in the field, it can interfere with surgical operations. Also,
Three pivotable directions of the first joint and two of the second joint
Since the hook is moved to an arbitrary space position in combination with the two rotatable directions, it is difficult to move the hook to the arbitrary space position, and it takes time and effort. Then, since both the adjusters of the first and second joints are tightened and fixed, it takes time to tighten and fix the adjusting screw.

(2) The first joint moves the three rotatable directions for each direction to adjust the direction of the second arm body.
It is difficult to adjust the arm in any direction.

The present invention has been made in view of the above-described problems, and an arm member supporting a surgical instrument such as a hook does not hinder a surgical operation, and a surgical instrument such as a hook is moved to an arbitrary space position. It is an object of the present invention to provide a surgical instrument support device which is easy and does not require any trouble to tighten an adjusting screw, and which can easily adjust the arm member in an arbitrary direction.

[Means for solving the problem]

The present invention has the following configuration in order to solve the above problems.

A hand part for mounting the surgical instrument, a flexible arm part supporting the hand part, and a mounting part for mounting the flexible arm part to a support member, wherein the flexible arm part has a connecting part which is slidably contacted. A plurality of connecting members formed in a substantially spherical shape and connected in a bendable and rotatable manner, and the connecting members slidably fit a plurality of piston rods connected in a slidable manner. The distal end is constituted by the end surface of the piston rod, the hand portion is rotatably supported by the distal end connecting body, and the hand portion is positioned so as to be in contact with the piston rod at the distal end. Is provided on the connecting member at the base end, and the mounting portion is tightened and fixed, and the fixing device for fixing each connecting member and the hand portion by pressing the piston rod is provided.

Further, the support member is constituted by a support arm portion and a support portion, and a distal end portion of the support arm portion is formed in a substantially spherical shape,
A first joint portion in which a mounting portion of a flexible arm portion formed in a substantially ring shape having a gap is externally fitted to the distal end portion and rotatably connected in an arbitrary direction, and a base end portion of the support arm portion A second joint in which either one of the upper and lower ends of the column is formed in a substantially spherical shape, and the other is formed in a substantially ring shape with a gap, and the other is externally fitted to the one and rotatably connected in an arbitrary direction. Department and
A fixing mechanism for fixing the second joint by tightening the other;
A column mounting portion is provided for mounting the lower end of the column portion to the operating table, and a mounting mechanism for fastening the column mounting portion to fix the column portion to the operating table is provided.

[Action]

 The present invention operates as follows by the above configuration.

Since the plurality of connecting members are connected in a bendable and rotatable manner, the flexible arm portion can be bent in any direction. In addition, when the piston rod is pressed by the fixing operation part, a frictional force is generated on the end face of the continuously provided piston rod, and the piston rod and each connecting body are fixed, and the piston rod at the tip presses the hand part. Therefore, the hand unit is fixed.

The support member is composed of a support arm and a support, and the first joint and the second joint are provided, so that the flexible arm and the support arm can rotate freely in any direction. Become.

〔Example〕

 An embodiment according to the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view showing a surgical instrument supporting device, FIG. 2 is a longitudinal sectional view showing a distal end side of a flexible arm and a hand, and FIG. 3 is a proximal end side of a flexible arm. FIG. 4 is a longitudinal sectional view showing a supporting arm portion, FIG. 5 is a perspective view showing a lever side of a fixing mechanism, and FIG. 6 is a partially cutaway front view showing a support portion.

As shown in FIG. 1, a surgical instrument supporting device A supports a hand section B for mounting a surgical instrument such as a hook, a flexible arm section C for supporting the hand section B, and a flexible arm section C for supporting the hand section B. A first joint F connecting the flexible arm C and the support arm D, and a second joint G connecting the support arm D and the support E to each other. It has.

As shown in FIG. 2, the hand portion B has a fixed holding body 2 and a movable holding body 3 disposed on a support 1 so as to face each other. The support 1 has a substantially U-shape. The base end of the fixed holding body 2 inserted into the groove 1a is fixed with a pin 1b, and the base end of the movable holding body 3 inserted into the groove 1a is rotated. It is rotatable by the shaft 1c, and has a long hole 2a, formed in the center of the two holding members 2, 3.
Male screw portions 4a, 4b of different directions formed on the handle 4 are screwed into the female screw portions 2b, 3b of 3a, and the distal end side of the movable holding member 3 is rotated by the handle 4 to make the distal end of the fixed holding member 2 And the distal end of the movable holding body 3 for holding a surgical instrument such as a hook. A hole 2c is formed at the tip end of the fixed holding member 2, and the support 1 has a cylindrical support shaft 5a and a support shaft 5a.
And a substantially disk-shaped member 5b for rotatably locking the support shaft 5 are fixed by fixing members 6 such as bolts. The hand portion B is attached to the tip of the supporting flexible arm portion C, and is supported by the supporting shaft portion 5 so as to be rotatable around an axis Y orthogonal to the axis X.

The flexible arm portion C is composed of a plurality of connecting members 7 connected in series as shown in FIG. 2 and FIG. This link 7
Is formed so as to be bendable and rotatable by forming a connection portion 8 which is in sliding contact with the connection portion 7 and a plurality of piston rods 9 provided continuously are slidably fitted in the connection member 7 and connected. The distal end side of the portion 8 is constituted by the end face of the piston rod 9, and when the piston rod 9 is pressed, a frictional force is generated between the end faces to fix the connecting portion 8 of the connecting body 7.
Hereinafter, the connecting member 7 will be described in detail.

The connecting body 7 has a substantially cylindrical main body 10, a rear part 11 screwed to a base end thereof, a front part 12 screwed to a front end thereof, and a connection body screwed to a front end of the front part 12. The piston rod 9 is composed of a rod body 14, a front end 15 screwed to the distal end thereof, and a rear end 16 screwed to the proximal end thereof. The distal end portion 13a of the connecting body 13 is formed in a hemispherical shape, and forms a substantially spherical shape with the front end portion 15 of the piston rod 9 whose end surface is formed in a hemispherical shape. Further, a front end portion 13a of the connecting body 13 is hooked to the rear portion 11 from inside the main body 10, and a hooking surface 11a of the rear portion 11 is formed in a substantially spherical shape, and a rear end portion engaged with the front end portion 15 is formed. The end surfaces 16a of the 16 are formed in a substantially spherical shape so that each connecting member 7 is bendable and rotatable. The pressing force is transmitted by the rod body 14 slidably fitted in the front part 12 and the connecting body 13, and
When a pressing force is applied, the end face of the front end 15 and the end face 16 of the rear end 16 are
A frictional force is generated in a, and each piston rod 9 is fixed, so that the connecting portion 8 of the connecting body 7 is fixed. Further, a ball 16b is interposed between the outer peripheral surface of the rear end 16 and the inner wall of the main body 10 at the rear end 16 to facilitate sliding in the main body 10.

The distal end of the flexible arm C, that is, the connecting member 7 at the distal end
The pivot portion 5 of the hand portion B is rotatably attached to the rod portion, and the rod body 14 of the piston rod 9 at the tip is located on the outer peripheral surface of the pivot 5a of the pivot portion 5 so as to be in contact therewith. When the main body 14 is pressed, the hand portion B is fixed. A screw hole 14a is formed in the connecting member 7 at the distal end so that the hand portion B can be fixed independently of the rod body 14.

Further, a mounting portion 17 is fixed to the proximal end portion of the flexible arm portion C, that is, the connecting portion 7 at the proximal end, by tightening the mounting portion 17 and pressing the piston rod 9 to hold the connecting portion 7 in hand with each connecting portion 7. A fixing operation section 18 for fixing the section B is provided. The fixed operation portion 18 includes a substantially cylindrical tube body 19 slidably fitted in the main body 10 of the connecting member 7 at the base end, and a rotating shaft 21 having a handle 20. The threaded portion 21a of the rotating shaft 21 is provided on the inner wall of the cylindrical body 19.
A screw thread 19a is formed, and one end of a substantially ring-shaped mounting portion 17 having a gap is welded to the outer peripheral surface. The other end of the mounting portion 17 is welded to the main body 10 of the connecting member 7 at the base end. A rod body 14 of the piston rod 9 is attached to the tip of the rotating shaft 21. When the rotating shaft 21 is rotated, the cylinder 19 moves to the base end side to fasten and fix the mounting portion 17. , The rod body 14 of the piston rod 9 moves to the distal end side and presses the piston rod 9 in each connecting member 7, so that each connecting member 7 and the hand portion B
Will be fixed. When the rotation shaft 21 is rotated in the reverse direction, the operation is reversed.

As shown in FIGS. 3 and 4, the first joint portion F includes a mounting portion 17 of a flexible arm portion C and a tip portion 22 of a support arm portion D formed in a substantially spherical shape. The flexible arm C is rotatable in any direction by externally fitting the tip 17 to the tip 22. The inner surface of the mounting portion 17 is formed in a spherical surface, and the portion of the maximum diameter of the distal end portion 22 slides on the spherical surface. The tip 22 is fixed to the tip of a hollow pipe-shaped arm main body 24 by a fixture 23 such as a bolt. Then, the first joint portion F is fixed by fastening the mounting portion 17 by the fixing operation portion 18.

As shown in FIGS. 4 and 6, the second joint part G has a substantially ring-shaped ring body 25 having a gap at the base end of the support arm part D and a cylindrical shape screwed to the base end of the arm body 24. A base end portion 27 comprising a base end cylindrical body 26 is provided.
The support arm D is rotatable in an arbitrary direction by externally fitting the support arm 25 to the upper end 28 of the column E having a substantially spherical shape. The inner surface of the ring body 25 is formed as a spherical surface, and the portion of the maximum diameter of the upper portion 28 slides on the spherical surface.

The support arm D is provided with a fixing mechanism 29 for fixing the second joint G by tightening the ring 25. The fixing mechanism 29 includes a substantially cylindrical cylinder 30 slidably fitted in the base cylinder 26 and a rod 32 operated by a fixing lever 31. On the inner wall of the cylindrical body 30, there is formed a screw thread 30a screwed with the adjusting screw 33 attached to the base end of the rod 32,
One end of a ring body 25 is welded to the outer peripheral surface. The other end of the ring body 25 is welded to the base cylinder 26. The adjusting screw 33 is provided with a small screw 34 for preventing loosening. As shown in FIGS. 4 and 5, a fixed lever 31 is provided on the distal end side of the rod 32.
This is a crank mechanism in which a mounting member 37 screwed to the tip of the rod 32 is rotatably mounted on an eccentric shaft 36 provided on the rotating shaft 35. When the fixed lever 31 is operated, the rotating shaft 35 rotates and the rod 32 moves to the base end side of the support arm D. The cylinder 30 is pressed by the movement of the rod 32, and the ring 25 is tightened to fix the second joint G. When the rotating shaft 35 is rotated in the reverse direction by the fixed lever 31, the reverse operation is performed, and the second joint G is in a free state. Since the fixing mechanism 29 is provided with the adjusting screw 33, the tightening width of the ring 25 by the fixing lever 31, the angle of the fixing lever 31, and the like can be adjusted.

As shown in FIG. 6, the column portion E has a column main body 38 having a substantially hollow pipe shape, an upper end portion 28 provided on the upper side of the column main body 38, and a column mounting portion provided on the lower side of the column main body 38. Part 39
Consists of The upper end portion 28 is fixed to a tip end of an arm 40 projecting from the upper end of the column main body 38 in a direction orthogonal to the column main body 38 with a fixing tool such as a bolt. The column mounting portion 39 is for mounting the lower end of the column portion E to the operating table S, and includes an upper holding member 41 fixed to the column main body 38 and a cylindrical member 42 slidably fitted in the column main body 38. Lower clamping body formed integrally with
An operating mechanism 44 is provided to move the lower holding member 43 to hold the operating table S between the upper holding member 41 and the lower holding member 43 and to fix the support E to the operating table S. This mounting mechanism 44
Is provided with a crank mechanism as described above, and includes a mounting lever 45 and a rod 46 which moves up and down when the mounting lever 45 is operated.
Consists of A threaded portion 46a is formed at the lower end of the rod 46, and the threaded portion 46a is screwed to a threaded portion 47a of a substantially cylindrical mounting body 47 engaged with the cylindrical body 42. . This mounting body 47 is formed by an upper holding body 41 and a lower holding body 4 by a threaded portion 47a.
The width of 3 can be adjusted. Mounting lever 4 above
By operating 5, the rod 46 moves upward and the lower holding body 43 moves upward. The operating table S is held by the upward movement of the lower holding body 43, and the column E is fixed to the operating table S.

With this configuration, the surgical instrument supporting device A can instantly move and fix a surgical instrument such as a hook to an arbitrary space position.

The present invention is not limited to the above embodiment, for example,
The base end of the support arm may be formed in a substantially spherical shape, and the upper end of the support may be formed in a substantially ring shape.

〔The invention's effect〕

Since the present invention is configured as described above, the following effects can be obtained.

(1) Since the flexible arm portion can be bent in an arbitrary direction, the flexible arm portion can be bent and avoided when approaching the surgeon or in the operating field, and the surgical operation can be performed. Can be prevented. Further, since the flexible arm portion is bendable and rotatable in an arbitrary direction and the hand portion is rotatable, a surgical instrument such as a hook can be easily moved to an arbitrary space position, and no labor is required. Since the flexible operation section and the hand section are simultaneously fixed by the fixing operation section, no labor is required.

(2) Since both the first joint and the second joint are rotatable in any direction, it is easy to adjust the flexible arm and the support arm in any directions.

[Brief description of the drawings]

1 is a perspective view showing a surgical instrument supporting device, FIG. 2 is a longitudinal sectional view showing a distal end side of a flexible arm and a hand, and FIG. FIG. 4 is a longitudinal sectional view showing a base end side of a flexible arm portion, FIG. 4 is a longitudinal sectional view showing a supporting arm portion, FIG. 5 is a perspective view showing a lever side of a fixing mechanism, and FIG. It is a partially broken front view. A: surgical instrument supporting device B: hand unit, C: flexible arm unit D: supporting arm unit (supporting member) E: support column unit (supporting member) F: first joint unit, G ... 2nd joint part S ... operating table 7 ... connecting body, 8 ... connecting part 9 ... piston rod, 17 ... mounting part 18 ... fixed operating part, 22 ... tip part 25 ... base end , 28… Upper end 29… Fixing mechanism, 39… Post mounting part 44… Mounting mechanism

Claims (2)

(57) [Claims] 1. A hand for mounting a surgical instrument, a flexible arm for supporting the hand, and a mounting for mounting the flexible arm to a support member. The connecting portion to be in sliding contact is formed in a substantially spherical shape and is constituted by a plurality of connecting members which are connected in a bendable and rotatable manner, and the connecting member slidably fits the plurality of connecting piston rods therein. The distal end side of the connecting portion is constituted by the end surface of the piston rod. The hand portion is rotatably supported by the distal end connecting body, and the hand portion is positioned so as to be able to contact the distal end piston rod. The mounting portion is provided on a connecting member at a base end, and the fixing portion is fixed by tightening the mounting portion, and a fixing operation portion for pressing the piston rod and fixing each connecting member and the hand portion is provided. Surgical instrument support device. 2. A flexible arm portion comprising: a support arm portion; and a support portion, wherein the distal end portion of the support arm portion is formed in a substantially spherical shape, and is formed in a substantially ring shape having a gap. A first joint part in which the mounting part is fitted to the distal end part so as to be rotatable in an arbitrary direction; and one of the base end part of the support arm part and the upper end part of the support part is substantially spherical. A second joint portion formed into a shape and formed in a substantially ring shape having a gap, and externally fitted to the one and connected rotatably in an arbitrary direction; and fixing the second joint by tightening the other. A fixing mechanism for fixing the support section to the operating table, and a mounting mechanism for fixing the support section to the operating table by tightening the support mounting section. The surgical instrument support device according to claim 1.