JPS6230775B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a microsurgical stool.

In the present invention, "micro" refers to a microscope, "surgical" refers to a surgical device, and "stool" refers to a chair. That is, it relates to a chair on which a surgeon who performs surgery using a microscope sits.

With recent advances in surgery, the range of possible surgeries has expanded dramatically. Particularly in fields such as neurosurgery and ophthalmology, the number of detailed operations using microscopes has increased. However, the surgeon is unable to take his eyes off the surgical site even for a moment, and the surgery often lasts a long time.

Moreover, the surgeon himself has to control the focus, zoom, and movement of the microscope, as well as move the affected area, and must himself operate the stool to adjust his approach to the affected area. It must also be able to control posture to withstand long hours of surgery. It is an object of the present invention to provide a microsurgical stool that satisfies these requirements.

Specifically, these controls can only be achieved by relying on the foot operations of the surgeon, whose fingers are occupied. Furthermore, in this case, consideration must be given to safety to prevent erroneous operations, and the selection operation must be easy.

For example, various types of switches and footrests may be combined, and different alarms may be set up for each operating part so that assistants, nurses, etc. in close proximity to the surgeon will be alerted to the movement of the stool at the same time. It is also preferable to couple an audible safety device.

Furthermore, the configuration of the operating foot switch on the foot step varies depending on the type of surgical procedure and the user's request, so it is best to make only the foot step replaceable depending on the intended use. , one stool can be widely used for multiple purposes, and a desirable stool can be provided.

The present invention can meet these demands, and embodiments of the present invention will be described in detail below based on the accompanying drawings.

1 is a seat, 2 is an armrest, 3 is a backrest, 4 is a footstep, and the stool upper part 5 includes these items. 6 is a base, which constitutes the lower part 7 of the stool. 8 is a fixed leg attached to the lower center of the tip of the base 6. Next, reference numerals 9, 9, 9 are swing caster legs that are attached to the lower part of the rear end of the base 6 so as to be able to swing;
1 each on the left, right, and lower center rear ends of the base 6 in the direction of the fan-shaped turning line with the fixed leg 8 as the center.
A total of 3 pieces are attached. Although not shown, a drive motor is attached to the swing caster 9 at the center rear end via a gear, and serves as a power source for the swing. In addition, the caster 9 may be affected by irregularities on the floor,
In addition to preventing gaps from forming between the wheels and the floor when affected by inclinations, the wheels are equipped with a built-in device that presses them against the floor with a strong spring so that they can always function as a sufficient driving wheel. . Also 10a, 10a, 10
Reference numerals b and 10b denote a free caster leg and a fixed caster leg respectively attached to the lower part of the lifting plate 11, which are casters for moving the stool in a desired direction. Blocks 12, 12 are attached to the upper surface of this elevating plate 11.
One end of vertical links 13, 13 is pivotally connected to 2, 12, and the other end of the vertical links 13, 13 is pivotally connected to triangular plates 14, 14. The other ends of the triangular plates 14, 14 are pivoted to the fulcrums 15, 15, and the remaining ends 62, 63 are connected by a link 65. The elevating plate 11 is connected at its rear end to a base plate 66 by a link 22, and a shaft 18 is pivotally attached to the rear end of the base plate 66, and an arm 16 is pivotally attached to the shaft 18. ing. The other end 61 of the arm 16 is connected to one end 62 of the rear triangular plate 14 by a link 64. Another arm 17 is pivotally connected to the shaft 18 which is pivotally connected to the base plate 66.
The piston rod 21 of the hydraulic piston 22 is pivotally connected to the fulcrum 19 on the hydraulic piston 6. Therefore, when the rod 21 of the hydraulic piston is pushed out, the shaft 18
The arms 17 and 18 rotate around the center to shift the link 64 forward (to the right in FIG. 4), pushing one end 62 of the triangular plate 14 and further pushing the link 6
5, press one end 63 of the front triangular plate 14. However, the fulcrum 15 of the triangular plate 14 is mounted on the base plate 66, and the triangular plate 1
One end 62, 63 of the block 4 rotates downward (counterclockwise) about the fulcrum 15 and pushes down the blocks 12, 12 via the vertical links 13, 13. Are the blocks 12, 12 attached to the lift plate 11?
Since the elevating plate 11 is connected to the fulcrum 67 of the link 22, the elevating plate 11 descends in an arc similar to a vertical vertical movement about the fulcrum 67 of the link 22. Therefore, the free caster legs 10a, 10a and the fixed caster legs 10b, 10b, which are attached to the lower part of the lifting plate 11, are both grounded on the floor lower than the swinging caster legs 9, 9, 9 and the fixed leg 8.

At this time, the stool has free caster legs and fixed caster legs 10a', 10a', 10
b' and 10b' allow it to move freely in a desired direction. On the other hand, the hydraulic piston 20
When the rod 21 is pulled, the elevating plate 11 rises, and the free caster legs 10a, 10a, 10b, 10b rise above the floor, so the fixed leg 8 and the rotating caster legs 9, 9, 9 are reversed again. Ground to the floor.

On the footstep 4, operating footswitches are arranged in a concentrated manner. The footstep 4 in one embodiment shown in FIGS. 3 and 4 is of a two-stage type. The treadle type foot switch 23 on the upper level is a switch for moving the stool forward, backward, left and right, and the treadle type foot switch 24 on the lower level moves the operating table ●.
This is a switch for moving in the XX′YY′ direction. 25 is a seesaw type foot switch for moving the stool up and down, 26 is a seesaw type foot switch for zooming the microscope, 27 is a seesaw type foot switch for focusing the microscope, and 29 is for returning the operating table to the center of the reference point. 30 is a lever-type footswitch that is kicked with the heel to return to the origin, and 30 is a bipolar button-type footswitch that burns blood vessels with high frequency to stop bleeding.

FIG. 5 shows another embodiment of a single-stage footstep 4'. 31 is a step-type switch for moving the operating table back and forth, left and right. 32 is for up and down the operating table, 33 is for the front and back of the stool, 34 is for up and down the stool, 35 is for rotating the stool, 36 is for up and down the microscope, 37 is for the focus, 38 is for the zoom. It is a type foot switch. 39 is a button type foot switch. Also, 40 is a footrest frame step with a narrow width and a low step, and 41 is a footrest step with a wide width and a high step, making it easy to see which position the foot is placed on and making selection operations easier. It is said that

Further, 42 in FIG. 2 is a speaker for an alarm, and FIG. 6 is a system diagram of the alarm. That is, each operation part of the foot switch is
Wiring is made from the oscillator, tone modulator, operation commander, and amplifier to the speaker, and depending on the difference in each operating part, for example,
The type of part being operated can be determined by sounds such as beep, poo, poo, etc., so that assistants and nurses can also understand the surgeon's movements. 43 is a lift pump, which is a hydraulic mechanism that moves the seat up and down. The rotation of the motor M built in the lower part of the seat 1 moves the shaft 46 back and forth (left and right in FIG. 3) via gears 44 and 45, that is, the seat can be moved back and forth by the rotating rack mechanism. It's becoming like that. Note that 60 is a guide in which the electric wire is enclosed.

H is a handle, which is a manual screw mechanism that is separate from the foot step and is used to move only the seat 1 up and down to adjust the knee height. Handle H
In this case, a chain 50 is endlessly connected and interlocked with a pinch roller 49 in between. A screw is carved into the shaft 51 of the handle H, and a nut 52 is screwed into the screw.
One end of an arm 53 is pivotally attached to the arm 53.
A left end 54a of the triangular plate 54 is pivoted to the other end so that it can be driven in parallel. The apex 54b of the triangular plate 54 is pivoted to the seat lower frame 68, so when the nut 52 moves to the right in FIG. 4, one end 69 of the triangular plate 54 rises.
Seat 1 rises. On the other hand, if the handle H is turned so that the nut 52 moves to the left in FIG. 4, one end 69 of the triangular plate 54 will sink, the seat 1 will descend, and the distance between the footstep and the seat will become shorter.

The armrest 2 can be moved up and down and rotated by an adjustment knob 55, and can be moved back and forth by an adjustment knob 56. The backrest 3 can be adjusted in height with an adjustment knob 57 and in forward and backward movement with an adjustment knob 58.
These knobs 57 and 58 have a mechanism that allows them to slide along an L-shaped holding plate 59.

Note that M is a microscope, which can be moved up and down by the above-mentioned operations using a remote control cable. T is a table on which instruments are placed, and L is a large surgical light.

The stool of the present invention has the constituent features as in the above-mentioned embodiment, and has the following effects.

Careful attention has been paid to the surgeon's ability to perform the surgery comfortably and without fatigue during long surgeries.The electro-hydraulic microsurgical stool is systematized so that it can be operated easily and selectively. be.

A foot switch for operation is centrally placed on the foot step, and with a single foot switch operation, you can not only operate the microscope, but also operate the microscope.
The operating table and chair can be raised and lowered, moved forward and backward, and moved left and right individually or simultaneously.

Furthermore, the distance between the seat and the footstep can be adjusted freely for doctors of different physiques, and a mechanism for adjusting the height and front and rear of armrests and the like is also incorporated.

Regarding the movement of the chair when operating it,
Each stool emits a unique sound, and every detail has been carefully considered so that assistants and nurses can understand the surgeon's movements.This is a useful, deluxe, and multipurpose doctor's stool.

[Brief explanation of the drawing]

The drawings show a doctor's stool showing an embodiment of the present invention, in which Fig. 1 is a perspective view, Fig. 2 is a front view including a partially cutaway cross section, Fig. 3 is a plan view including a partially cutaway cross section, and Fig. 4 is a doctor stool. A side view including a partially cutaway cross section, FIG. 5 is a plan view of a footstep showing another embodiment incorporated in the stool of the present invention, FIG. 6 is a system diagram of an alarm, and FIG. 7 is a diagram of the present invention. FIG. 3 is a side view showing the state of use. In the diagram: 1...Seat, 2...Armrest, 3
...Backrest, 4,4'...Footstep, 5...Stool top, 6...Base, 7...
Stool lower part, 8... Fixed leg, 9... Swivel caster leg, 10, 10'... Free caster leg, 11... Elevating plate, 23, 24, 31...
...Tread type foot switch, 25, 26, 27, 2
8, 32, 33, 34, 35, 36, 37, 38
... Seesaw type foot switch, 29... Lever type foot switch, 30, 39... Button type foot switch, 40... Foot rest frame stage with narrow width and low step, 41... Foot rest frame step with wide width and high step, 42
... Alarm speaker, 43 ... Hydraulic mechanism, 47 ... Pinion of rotating rack mechanism, 48 ...
...Rack of rotating rack mechanism, 51...Screw mechanism, 55, 56...Armrest adjustment knob,
57, 58... Back crest adjustment knob, H...
Handle, M...Microscope, ●...Operating table.

Claims (1)

[Scope of Claims] 1. A stool consisting of an upper part of the stool such as a seat, an armrest, a backrest, etc. and a lower part of the stool such as a base, which has at least a footstep on the upper part of the stool, and legs on the base of the lower part of the stool. The leg consists of a fixed leg, a free caster leg, and a swinging caster leg, and the free caster leg is locked by raising the free caster leg or lowering the fixed leg and the swinging caster leg. A microsurgical stool, characterized in that it can be rotated by rotating caster legs around the footstep, and foot switches for operation are arranged centrally on the footstep to form a system. 2. The fixed leg is attached to the lower center of the tip of the base, and at least two or more swingable caster legs are attached to the lower part of the rear end of the base so as to be able to rotate.
2. The microsurgical stool according to claim 1, wherein a free caster leg is rotatably attached to the lower part of the elevating plate, and the elevating plate is pivotally connected to the base so that it can be raised and lowered. 3 The operating foot switch on the foot step may be a tread type, a seesaw type, a lever type,
By using a button type, etc., and by placing the switches in a concentrated manner with height differences, by providing a foot frame step on the footstep as necessary, and by combining the width and height difference of the frame step. The microsurgical stool according to claim 1, characterized in that the selection operation is facilitated. 4. The device according to claim 1 or 3, characterized in that a different alarm is connected to each operation part of the foot switch, so that the type of operation part can be determined by the sound. Microsurgical stool. 5. The microsurgical stool according to claim 1, wherein the upper part of the stool can be moved up and down by a hydraulic mechanism and can be moved back and forth by a rotating rack mechanism. 6. The microsurgical device according to claim 1 or 5, characterized in that the seat, etc. on the upper part of the stool, excluding the footstep, is moved up and down by a screw mechanism to adjust the distance from the footstep. stool. 7. The microsurgical stool according to claim 1, wherein the armrest is adjustable and can be moved back and forth, as well as vertically and rotated. 8. The microsurgical stool according to claim 1, wherein the backrest is adjustable in height and forward/backward movement using an adjustment knob.