JPH02286160A - suction device - Google Patents

Abstract

PURPOSE:To easily put in and out a suction cassette to a main body and to hold the suction cassette without applying force by providing a lead-in mechanism part, which leads the suction cassette into the main body when the suction cassette is mounted. CONSTITUTION:When a suction cassette 8 is hung by a hand and carried to a position where the suction cassette is led in by a vacuum pad 11, the suction cassette is led in against a spring 18. When the suction cassette 8 comes to a set position, a switch 6 is turned on and a valve 17 is turned off. Afterwards, a valve 13 is turned off. Then, an air cylinder 15 is operated and a piston 15 falls down to a hanging part 40 in the suction cassette 8 by the force of a spring 15 and dead weight. Then, the suction cassette 8 is held. A connecting part 40a of the suction cassette 8 is sealed with a connecting part 22 in a main body 1 and air, whose pressure is reduced, is led from a vacuum control part 5 to the suction cassette 8.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a suction device used in ophthalmic surgery for vitreous body, cataract, etc.

BACKGROUND OF THE INVENTION This type of suction device is designed to accommodate an object to be aspirated within the eye (for example, a cloudy vitreous body) in a suction cassette.

When holding the suction cassette in the main body of the suction device, the operator manually pushes the suction cassette and holds the suction cassette by hooking the hook part of the suction cassette onto a latch mechanism or the like within the main body.

To remove the suction cassette, remove the hook on the suction cassette from the latch mechanism inside the main body and remove the suction cassette by hand.

Problem to be Solved by the Invention However, in such a suction cassette loading/unloading and holding mechanism, when the suction cassette is inserted into the main body, the main body and the suction cassette are sealed in order to evacuate the bottle contained in the suction cassette. There is a need. Therefore, considerable force is required when pushing in by hand. Furthermore, force is required to fit the hook into the latch mechanism.

Also, since it is necessary to remove the suction cassette from the main body,
The mechanism for removing the hook from the latch mechanism becomes complicated. It also requires a certain amount of force.

Purpose of the Invention This invention provides a method for removing and inserting a suction cassette into and out of the main body.
The purpose is to provide a suction device that can be easily taken in and out and held without applying force.

Summary of the invention The invention is summarized in the claims.

Means to solve problems Reference is made to the embodiments of FIGS. 1 and 2.

The suction device of this invention suctions the object W to be suctioned using a vacuum. This suction device includes a main body 1, a suction cassette 8 which is detachable from the main body 1 and has a housing for an object to be aspirated, and a retraction mechanism 2 for drawing the suction cassette 8 into the main body 1.

Furthermore, the main body 1 includes a holding mechanism section 3 that holds the suction cassette 8. The main body 1 includes a push-out mechanism section 4 that pushes out the suction cassette 8 from the main body 1. The holding mechanism section 3 is composed of a compression pump 14 and an air cylinder 15.

Further, the extrusion mechanism section 4 has a spring 18.

The main body 1 includes a switch 6 and other members. The switch 6 is used to check whether the suction cassette 8 is inserted into the main body 1. Depending on the signal content of this switch 6, whether or not the suction cassette 8 is inserted is indicated by a member (in the embodiment, a display 60, see FIG. 4).

Operation As shown in FIG. 1, the suction cassette 8 is drawn into the main body 1 by the drawing mechanism section 2.

The suction cassette 8 pulled in and set as shown in FIG. 2 is held against the main body 1 by the holding mechanism 3 during the surgery.

As shown in FIG. 3, for example, the suction cassette 8 is
When the suction cassette 8 is completely exhausted, the push-out mechanism section 4 is used to push out the suction cassette 8 from the main body 1.

Embodiment FIGS. 1 to 3 show an embodiment of the suction device of the present invention.

In FIG. 1, the suction cassette 8 is about to be inserted into the main body 1. In FIG. 2, the suction force set 8 is held. In FIG. 3, the suction cassette 8 is about to be pushed out.

Body 1] Refer to FIG. The main body 1 includes a retracting mechanism section 2, a holding mechanism section 3, a pushing mechanism section 4, a vacuum control section 5, a switch 6, and a switch 7.

The suction cassette 8 can be attached to and removed from the recess 23 of the main body 1.

[Retracting mechanism section 2] The retracting mechanism section 2 includes a vacuum pump 10 and a vacuum pad 11.
, a tube 12, and a valve 13.

In the retraction mechanism section 2, a vacuum pump 10 and a vacuum pad 1 are installed.
1 are connected by a tube 12, and a valve 13 is provided between them. When the valve 13 is turned on by the signal from the switch 6, the reduced pressure air from the vacuum pump 10 is guided to the vacuum pad 11 through the tube 12. This allows the suction cassette 8 to be drawn in.

Further, when the above signal is released, the valve 13 is turned off and the passage between the vacuum pump 10 and the vacuum pad 11 is closed. At the same time, the reduced pressure air in the vacuum pad 11 is transferred to the valve 1.
3 and is exposed to the atmosphere, and the suction cassette 8 is separated from the vacuum pad 11.

[Holding Mechanism Section 3 The holding mechanism section 3 includes a compression pump 14 and an air cylinder 15.
, a tube 16, and a valve 17.

In the holding mechanism section 3, the compression pump 14 and the air cylinder 1
5 are connected by a tube 16, and a valve 17 is provided between them. The air cylinder 15 has a spring 15a and a piston 15b. When compressed air enters the air cylinder 15, the piston 15b pushes up the spring 15a, and when the compressed air escapes, the piston 15b is lowered by the force of the spring 15a.

When the valve 17 is turned on by the signal from the switch 6, compressed air from the compression pump 14 enters the air cylinder 15 through the tube 16 and lifts the piston 15b. Further, when the signal is released, the valve 17 is turned OFF and the passage between the compression pump 14 and the air cylinder 15 is closed. At the same time, compressed air in the air cylinder 15 passes through the valve 17 and is released to the atmosphere to lower the piston 151).

In FIG. 1, the suction cassette 8 is about to be retracted. Valve 17 is ON.

The valve 13 is also turned on, the piston 15b of the air cylinder 15 is raised, and the vacuum pad 11 is in a state where the suction cassette 8 can be retracted.

[Extrusion Mechanism Section 4] The extrusion mechanism section 4 has a spring 18 and a cassette extrusion rod 19. The push rod 19 is extendably provided on the main body 1 side.

[Vacuum Control Section 5] The vacuum control section 5 includes the vacuum pump 10 and the pressure adjustment section 20.
, a tube 21, and a connecting portion 22. The vacuum pump 10 functions as both the vacuum control section 5 and the drawing mechanism section 2. In the vacuum control section 5, a vacuum pump 10 vacuum-suctions the object W (see FIG. 2).

[Switch 6] The switch 6 is a limit switch for checking whether the suction cassette 8 has entered the recess 23 of the main body 1.

U switch 71 The switch 7 is set in the main body 1, and when the operator presses it with his or her finger to turn it on as shown in FIG. 3, it operates the valve 13 of the retracting mechanism section 2 and the valve 17 of the holding mechanism section 3 to release the spring. The suction cassette 8 is pushed out by the force of 18.

[Suction Cassette 8] The suction cassette 8 has a storage section 30 for the object to be sucked W and a passage 31.
32 and a hook portion 40. One end of the passage 31 is connected to the outside of the suction cassette 8, and the other end is connected to the housing section 3.
Connected to 0. One end 401 of the passage 32 is connected to the connecting portion 22 . The other end of the passage 32 is connected to the housing section 30.

[Control device] The control device shown in FIG. 4 is provided in the main body.

The power switch 50 provides an on/off signal to the voltage supply section 51. The switch 6 and the suction cassette removal switch 7 are connected to a timer 53. The switch 6 is connected to a display 60. This display 6
0 displays the setting to the operator when the switch 6 is turned on, that is, when the suction cassette 8 is set.

The switch 7 is further connected to a control section 52. Voltage supply section 51 is connected to control section 52 . Control unit 52
controls the compression pump 14, the vacuum pump 10, and the valves 17 and 13 based on the signal from the switch 7 and the voltage supply from the voltage supply section 51.

The timer 53 is connected to the take-out switch 7 or the switch 6.
When turned on, voltage is supplied from the voltage supply section 51 to the control section 52 for a certain period of time, that is, until the removal or insertion operation of the suction cassette is completed.

This eliminates the need to operate the power switch 50 each time.

By the way, as shown in FIGS. 1 to 3, the above-mentioned valve 17 connects the compression pump 14 and the air cylinder 15 in the ON state. - When the side is OFF, air cylinder 1
Connect 5 to the atmosphere side. Similarly, the valve 13 connects the vacuum pump 10 and the vacuum pad 11 when in the ON state. On the other hand, in the OFF state, the vacuum pad 11 is connected to the atmosphere side.

[Operation] [Insertion of the suction cassette 8] First, as shown in FIG. 1, when the suction cassette 8 is brought by hand to the position where it is drawn in by the vacuum pad 11,
The suction cassette is pulled in against the spring 18 by the vacuum pad 11.

[Setting of the suction cassette 8] When the suction cassette 8 comes to the set position shown in FIG.
The voltage supply section 51 is operated via the voltage supply section 51. Valve 17 is OF
After F, the valve 13 is turned off. Then, the air cylinder 15 works, and the piston 15b falls onto the hook 40 on the suction cassette 8 due to the force of the spring 15 and its own weight, and holds the suction cassette 8.

Thereafter, the reduced pressure air in the vacuum pad 11 is released to the atmosphere by the valve 13.

As a result, the pad 11 can be removed from the suction cassette 8.

Further, the connecting portion 40a of the suction cassette 8 and the connecting portion 22 inside the main body 1 are sealed, and the reduced pressure air from the vacuum control unit 5 is guided to the suction cassette 8. In this state, the vacuum control unit 5 becomes capable of suctioning the object W to be suctioned.

[Removal of the suction cassette 8] The object W to be aspirated is suctioned from the eyeball (not shown) into the storage section 30 through the passage 31. After suction is completed, the suction cassette 8
When taking out the suction cassette, the switch 7 for taking out the suction cassette is turned on as shown in FIG. Then, the valve 17 is turned on by the signal from the switch 7, compressed air enters the air cylinder, and the piston 15b is raised and separated from the hook 40 of the suction cassette 8. At the same time, the spring 18 of the push-out mechanism 4 forcibly removes the suction cassette 8 from the main body 1. Switch for taking out 7
After a certain period of time has passed since the valve 13 is turned ON, the valve 13 is turned ON.
N, and the next suction cassette 8 is ready to be inserted.

Furthermore, since there is a timer 53 shown in FIG. 4, the suction cassette can be pulled in and pushed out not only when the power switch 50 is on, but also when the power supply switch 50 is off for a certain period of time via the timer 53. This can be done by operating 51.

Other Embodiments (2) The holding mechanism does not need to be an air cylinder, and a solenoid may be used.

■ An air cylinder can be one in which compressed air is put in, the piston is raised, and when the compressed air is released, the piston is lowered by a spring, or one in which compressed air is put in, the piston is lowered, and when the piston is released, the piston is raised by a spring. Alternatively, the piston may be moved up and down by alternately introducing compressed air without a built-in spring.

■ The extrusion mechanism is not limited to one that uses a spring, but may also use a solenoid, motor, etc.

■For sending reduced pressure air to the vacuum pad, you may use not only a vacuum pump but also a device that creates a vacuum from compressed air.

■ Switch 6 to check if the suction cassette is inserted
It may be a switch that uses light as well as a mechanical one.

■ The suction cassette is not limited to one with one bottle, but may have two or more bottles.

(2) The valves 17 and 13 pass through when ON and open to the atmosphere when OFF, but may be reversed to open to the atmosphere when ON and pass through when OFF.

(2) The vacuum pump that sends vacuum to the vacuum pad and the vacuum pump that sends vacuum to the pressure adjustment section may be different or may be used as one vacuum pump.

■ The retraction mechanism is not limited to one that uses a vacuum pump and a vacuum pad, but may also be one that hooks onto the cassette using a solenoid, motor, etc., or one that grabs and retracts the cassette like a robot arm. In addition to the display, a buzzer or the like can be used as a member to indicate the status of the suction cassette.

Effects of the Invention According to the invention of claim 1, when pulling in the suction cassette, the suction cassette can be forcibly pulled into the set position, so the operator does not have to apply strong force to seal the suction cassette and the main body. It can be inserted easily.

According to the second aspect of the invention, similarly to the first aspect, the suction cassette and the main body can be easily inserted without requiring any force to seal them, and moreover, the suction cassette can be securely held in the main body. In other words, the suction cassette does not come off the main body during eye surgery, making the surgery safer.

According to the third aspect of the invention, when taking out the suction cassette, the suction cassette can be forcibly pushed out easily using mechanical force.

According to the fourth aspect of the present invention, it is easy to check whether the suction cassette is properly inserted because the status can be read and indicated by a switch without checking.

[Brief explanation of drawings]

Figures 1 to 3 are diagrams showing embodiments of the present invention, with Figure 1 showing the state in which the suction cassette is being pulled into the main body, and Figure 2 showing the state in which the suction cassette is set in the main body. FIG. 3 is a diagram showing a state in which the suction cassette is about to be pushed out from the main body, and FIG. 4 is a diagram showing the control device. 1... Main body 2... Pulling mechanism section 3... Holding machine mechanism section 4... Pushing out Mechanism section 5...Vacuum control section 6.7...Switch 8...Suction switch

Claims (4)

[Claims] 1. A suction device that suctions an object to be aspirated using a vacuum, which includes a main body, a suction cassette that is removably attached to the main body and has a storage section for the object to be aspirated, and a retracting mechanism for pulling the suction cassette into the main body when the suction cassette is installed. A suction device comprising: 2. A suction device that suctions an object to be aspirated using a vacuum, which includes a main body, a suction cassette that is removably attached to the main body and has a storage section for the object to be aspirated, and a retracting mechanism for pulling the suction cassette into the main body when the suction cassette is installed. and a holding mechanism section that holds the suction cassette in the main body, and the retraction mechanism section is composed of a vacuum pump and a vacuum pad. 3. A suction device that suctions an object to be aspirated using a vacuum, which includes a main body, a suction cassette that is removable from the main body and has a storage part for the object to be aspirated, and a holding mechanism that holds the suction cassette on the main body when the suction cassette is attached. A suction device comprising: a push-out mechanism section for pushing out a suction cassette from a main body; the push-out mechanism section has a spring; and the holding mechanism section has a compression pump and an air cylinder. 4. A suction device that uses a vacuum to suction an object to be aspirated includes a main body, a suction cassette that is removable from the main body and has a storage section for the object to be aspirated, a switch for checking whether a suction cassette is contained in the main body, and a switch. A suction device comprising: a member that indicates the state of the suction cassette according to the contents of the suction cassette.