JPH0482546A - Vertically moving apparatus of irrigation bottle for operation - Google Patents

Abstract

PURPOSE:To facilitate correction for accurate display of height without moving an irrigation bottle to an upper or lower limit position by making a reference signal generating section emit a reference signal when the irrigation bottle is almost at an intermediate position of a moving range of a moving section to display a position of the irrigation bottle according to the control of a moving control section with a display section using an output of the reference signal generating section as reference. CONSTITUTION:A pulse enters a display section 56 from a movement control section 54. The display section 56 counts the number of the pulses. A displayed numeral of the display section 56 is corrected based on a signal as given when detection signals S1 and S2 are both high. While a wire 61 moves vertically, there is possibility that a deviation may be caused between an actual height of a bottle 51 and a displayed height of the bottle on the display section by elongation or other reasons. Or a displayed height may be deviated by holding and pulling the bottle 51 during stoppage. But the above-mentioned correction allows the deviation in the height of the bottle to be correct.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention This invention relates to an apparatus for moving up and down an irrigation bottle for perfusing an eyeball with an irrigation fluid in ophthalmic surgery.

Conventional Irrigation Fluids are injected into the eye to maintain intraocular pressure when removing cloudy gel-like vitreous from the eyeball.

The bottle of perfusate is usually suspended on a stand. By changing the height of the irrigation fluid bottle along this stand, efforts are being made to keep the intraocular pressure constant by adjusting the amount and pressure of irrigation fluid flowing into the eyeball according to the surgical situation.

A bottle 101 shown in the conventional example shown in FIG. 7 is moved up and down by a motor 102.

That is, by attaching the bottle 101 to the wire 103 and moving the wire 103 between the rollers 4 and 105 by the motor 102, the bottle 101 is moved up and down.

In this type of device, the upper and lower limit positions of the bottle are detected as follows. Micro switch 106, 10
7 is provided near the motor 102. On the other hand, wire 103
are provided with members 108 and 109. When the bottle 101 reaches the upper limit as shown in FIG. 7, the member 108 hits the microswitch 106 and provides an upper limit signal to the signal processing device 110.

On the other hand, when the bottle 101 reaches the lower limit as shown in FIG. 8, the member 109 hits the microswitch 107 and provides a lower limit signal to the signal processing device 110. Based on these upper and lower limit signals, the display of the upper limit position and lower limit position on the display device 111 is corrected to correct the deviation in the read value of the display device. Such a correction is necessary because, for example, if the operator holds and pulls the bottle 101 when the machine is stopped, the actual height of the bottle will deviate from the height displayed on the display device.

Problems to be Solved by the Invention However, with the conventional method of correcting the reading of the bottle position, correction cannot be made unless the bottle 101 moves to an upper or lower limit that is not used in normal surgery.

Purpose of the Invention The present invention provides a correction means at approximately the middle position of the bottle movement range to easily make corrections to accurately display the height without having to move the perfusion bottle to the upper and lower limit positions. This invention relates to a device for vertically moving a surgical irrigation bottle.

SUMMARY OF THE INVENTION The gist of the present invention is a surgical irrigation bottle vertical movement device as set forth in the claims.

Means to solve problems Please refer to FIGS. 1 and 2.

The support part 52 attaches and supports the perfusion bottle 51. The moving section 53 moves the perfusion bottle 51 up and down via the support section 52. The movement control section 54 controls the movement section 53. The reference signal generating section 55 generates a reference signal when the perfusion bottle 51 is at a substantially intermediate position in the movement range of the moving section 53. The display section 56 displays the position of the perfusion bottle 51 under the control of the movement control section 54 using the output of the reference signal generation section 55 as a reference.

The support section 52 is composed of a support section 60 having a roller 64 which is a pulley on its upper part, and a driving wire 61 that wraps around the pulley and to which the perfusion bottle 51 is attached.

The moving section 53 includes a drum section 65 around which a driving wire 61 is wound, and a motor 66 that rotates the drum section 65. The motor 66 of the moving part 53 is a pulse motor,
The movement control section 54 is configured to supply predetermined pulses to this pulse motor.

Effect: When the bottle 51 is at approximately the middle position of the movement range, for example at Q in FIG. 1, the display of the bottle position on the display section 56 is corrected. That is, at the intermediate position Q, a deviation between the actual bottle position and the display on the display unit 56, which occurs when an operator holds and pulls the bottle 51 when the bottle 51 is stopped, is corrected.

Embodiment 1 FIG. 1 shows an ophthalmic surgical apparatus equipped with a surgical irrigation bottle vertical movement device of the present invention.

In ophthalmic surgery, the cloudy part of the gel-like vitreous body (hereinafter referred to as the aspirated object 34) located between the crystalline lens a and the retina of the target eye 13, also called the diseased eye, is removed by suction, and a transparent part is removed in its place. Replace with liquid. This allows light to pass through the crystalline lens a and reach the retina, thereby improving visual acuity.

The ophthalmic surgery device includes a suction unit 1, a cutter drive unit 2,
Light source unit 3, cutter 5, light guide 6, irrigation plug 7, suction control unit 10, irrigation bottle vertical movement display device 5
It has 0. The suction control section 10 is connected to the suction section 1. The suction force of the suction unit 1 can be adjusted by the operator operating the suction control unit 10 as appropriate.

[Suction part 1] The suction part 1 is connected to the cutter 5 via a passage 8a. The cutter 5 has an insertion portion 5a. This insertion portion 5a is inserted into the inside of the eye 13 through the sclera 15 of the eyeball 13. A suction port 30 is provided at the distal end of the insertion portion 5a. The cutter 5 is capable of cutting off the object to be sucked 34 that has entered the suction port 30. When the suction unit 1 is operated according to instructions from the suction control unit 10, the excised object to be aspirated 34 is moved into the insertion unit 5a and into the passage 8.
It is possible to aspirate through a.

[Cutter drive unit 2] The cutter drive unit 2 includes a compressed air tube 8b.
is connected. Compressed air is sent to the cutter 5 through the tube 8b, and the cutter 5 is actuated by the compressed air to cut off the object to be sucked 34.

[Light source unit 3] The light source unit 3 includes an optical fiber 6a in the light guide 6.
It is now possible to send light through the light guide 6
The tip of is inserted into the eye 13. The light guide 6 can illuminate the vicinity of the suction port 30.

[Perfusion bottle vertical movement device 50] The perfusion bottle vertical movement device 50 includes a perfusion bottle 51, a support section 52, a movement section 53, a movement control section 54, and a reference signal generation section 5.
5, a display section 56, and a solenoid brake 80.

[51 perfusion bottles] Irrigation bottle 51 is connected to irrigation tube 57.

The perfusion bottle 51 contains a perfusion solution. This irrigation fluid is passed through the irrigation tube 57 and the irrigation plug 7 to the eye 1.
It is now possible to send it within 3. In addition, the stopper 4b
You can also stop sending irrigation fluid by operating .

[Support part 52] The support part 52 is a support part 60. It has a wire 61 and an arm 62. The support column 60 is provided on the main body 63,
It has a roller 64 at the upper end. The wire 61 is the roller 64
is supported by Arm 62 supports irrigation bottle 51. Arm 62 is fixed to wire 61.

[Moving section 53] As shown in FIGS. 1 and 2, the moving section 53 is connected to the drum section 6.
5 and a motor 66. The drum 65 is fixed to a shaft 66a of a motor 66, and is used to wind the wire 61.

Motor 66 is preferably a pulse motor.

The wire 61 is supported along the periphery of a roller 64, while on the drum 65 the wire 61 is wound so as to fit into a spiral groove 67, as shown in FIG. Therefore, the wire 61 moves in the direction of arrow A in accordance with the position to be wound.

[Movement Control Unit 54] The movement control unit 54 sends predetermined pulses to the motor 66 and also sends information on the number of movement pulses to the display unit 56.

[Reference Signal Generation Section 55] The reference signal generation section 55 has photosensors 70, 71 and a rotating body 72 as shown in FIGS. 1 and 2.

The photosensors 70, 71 are, for example, a combination of a normal light receiving diode and a light emitting diode. The photosensor 70 detects the position where the wire 61 passes through the photosensor 70 as shown in FIG.

In other words, when the bottle 51 is located at the intermediate position Q of the support column 60 as shown in FIG. 4, the wire 61 passes through the point P of the photosensor 70 in FIG. Light does not enter the light receiving diode. At this time, as shown in FIG. 5, the photosensor 7o outputs a detection signal s1 which is an inversion of the received signal.

On the other hand, the rotating body 72 has one slit 73 shown in FIG.
is provided. Photo sensor 71 detects slit 73. At this time, as shown in FIG.
Roll 2. The relationship between the detection signals s1 and s2 is adjusted in advance so that when the bottle 51 comes to approximately the middle position Q, both become high as shown in FIG.

Here, the pulse width of the detection signal S2 is set to be sufficiently smaller than the pulse width of Si, and set so that the pulse of the detection signal s2 is included in the pulse of the detection signal s1 (preferably at the center position). put.

As mentioned above, the detection signals S and 82 are simultaneously high.
The reference position is indicated when .

[Display section 56 The display section 56 is connected to the reference signal generation section 55 and the movement control section 54. The display section 56 displays the height of the bottle 51 according to the control of the movement control section 54 based on the time when the output of the reference signal generation section 55, that is, the output of the photosensor 70.71 becomes high (Hl) at the same time as shown in FIG. Display the current position.

[Solenoid brake 80] As shown in Fig. 2, the solenoid brake 8
0 is facing. The solenoid brake 80 shown in FIG. 2 is a safety device and uses a spring force to push the rotating body 72 so that it does not rotate when the power is turned off. In other words, the bottle 51 is held so that it does not move up and down.

Operation for height correction The motor 66 shown in FIG. 2 is rotated under the control of the movement control section 54. As a result, for example, the bottle 51 approaches the intermediate position Q as shown in FIG. 4 from the upper limit position U in FIG. Then, the detection signal S1 of the photosensor 70 changes from low (LO) to high.
become.

When the bottle further moves and crosses the intermediate position Q, the detection signal S2 of the photosensor 71 changes from low-+high to IOW. At this time, S1 remains high. When the bottle moves further and passes near the intermediate position Q, the photo sensor 70
The detection signal S1 becomes low. At this time, S2 remains low.

These detection signals SI S2 are input to the display section 56 in FIG. 1 and are used for height correction.

In other words, as shown in FIG.
is detected and outputs a signal S1 approximately at the intermediate position Q.

The photosensor 71 detects the slit 73 of the rotating body 72, outputs a signal S2, and determines the intermediate position Q from the overlapping section of S1 and S2.

On the other hand, a pulse is input from the movement control section 54 to the display section 56 in FIG. The display unit 56 counts this number of pulses.

Detection signal 81. The numerical value displayed on the display unit 56 is corrected based on the signal when both S2 become high. While the wire 61 moves up and down, there is a risk that the actual height of the bottle 51 and the height displayed on the display section may differ due to reasons such as elongation. Alternatively, when the bottle 51 is stopped, etc., the bottle 51 may be held and pulled, causing the displayed height to shift. However, by making the correction as described above, the bottle height deviation can be corrected to the correct height.

Bottle upper and lower limit setting operation Refer further to FIG. After correcting the bottle height,
Known limit rotation amount from intermediate position Q (limit bottle movement amount)
When the motor 66 has moved to this point, the movement control section 54 in FIG. 1 issues a stop command to the motor 66. In other words, the movement control section 54 is
By counting the number of pulses to 6, the motor 66 is stopped when the bottle reaches the upper limit position U or the lower limit position shown in FIG. 1, thereby preventing accidents such as the bottle 51 hitting or coming off other parts. prevent. This eliminates the need to provide separate detection components such as upper and lower limit microswitches as in the prior art.

By the way, the present invention may use the following embodiments in addition to the above-mentioned embodiments.

1. The photosensor output may be high or low, or the type of photosensor itself (e.g. reflective type)
But that's fine.

2. Other sensors may be used instead of the photosensor.

3. You may provide multiple bottles instead of just one bottle.

4. The intermediate position Q may be moved to any vertical position using a switch or the like.

5. The motor does not have to be a pulse motor.

6. An adjustment mechanism may be attached to the rotating body 72 so that the position of the slit 73 can be changed.

(Intermediate position Q changes) 7. The solenoid brake 80 may use not only the method of holding down the rotating body 72 but also other methods.

8. The brake is not limited to a solenoid, but other brakes may be used.

9. The drum 65 does not need to have the spiral groove 67.

10. The detection accuracy of the middle open position Q can be further improved by making the detection signal S S2 valid only when the bottle is lowered from the top to the bottom or only when the bottle is raised from the bottom to the top.

11. When the power is turned off, the brake is applied and the vertical movement of the bottle is stopped, so if you memorize the current height of the bottle using a backup memory etc., the current height of the bottle will be displayed and the height will be displayed at the next surgery. Now the surgery can begin.

12. The brake may be activated not only when the power is turned off, but also when the movement is completed, to prevent the bottle from falling even if the bottle is accidentally pulled.

Effects of the Invention According to the invention of claim 1, the height of the bottle can be corrected at an intermediate position where it is frequently passed, and there is no need to move the bottle to the upper limit or lower limit position, so the correction can be made immediately and easily. According to the invention of item 2, the wire is wound around the drum portion, so that slippage of the wire is reduced.

According to the third aspect of the invention, since a pulse motor is used as the motor, it is easy to stop the motor at the upper and lower limits, and when the bottle is at the top.

Can be safely stopped at the lower limit.

According to the fourth aspect of the invention, it is possible to prevent the bottle from moving up and down when the power is turned off.

[Brief explanation of drawings]

Fig. 1 is a front view showing an embodiment of the surgical irrigation bottle vertical movement device of the present invention, Fig. 2 is a side view of the main parts, Fig. 3 is an enlarged view of the drum part and the vicinity of the motor, and Fig. 4 is the bottle 5 is a diagram showing the detection signal of the photosensor, FIG. 6 is a diagram showing the flow of operation, and FIGS. 7 and 8 are diagrams showing a conventional example. 51...Bottle 52...Supporting part 53...Movement part 54...Movement control part 55. ......Reference signal generation section 56...
... Display section 60 ... Support section 61 ... Wire agent Patent attorney 1) Toru Hen F ■ G. F I G. G.

Claims (4)

[Claims] (1) A surgical perfusion bottle vertical movement device, which includes: a support part that attaches and supports the perfusion bottle; a movement part that moves the perfusion bottle up and down via the support part; and a movement control that controls the movement part. and a reference signal generating section that emits a reference signal when the perfusion bottle is at a substantially intermediate position in the movement range of the moving section, and according to the control of the movement control section using the output of the reference signal generating section as a reference. 1. A surgical perfusion bottle vertical movement device, comprising: a display section that displays the position of the perfusion bottle. (2) In the apparatus for vertically moving a surgical irrigation bottle according to claim 1, the support section is composed of a support section having a pulley on the upper part, and a drive wire that wraps around the pulley and attaches the irrigation bottle, and A device for vertically moving a surgical irrigation bottle, wherein the moving section is comprised of a drum section around which a driving wire is wound, and a motor that rotates the drum section. (3) In the apparatus for vertically moving a surgical irrigation bottle according to claim 2, the motor of the moving section is a pulse motor, and the movement control section is configured to supply a predetermined pulse to the pulse motor. A device for vertically moving a surgical irrigation bottle. (4) The apparatus for vertically moving a surgical irrigation bottle according to claim 1, further comprising a brake part for holding the irrigation bottle in that position when the vertical movement of the irrigation bottle is completed. motion device.