JP3218064B2 - Surgical equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surgical apparatus most suitable for ophthalmic surgery such as vitreous or cataract.

[0002]

2. Description of the Related Art For example, a surgical apparatus for ophthalmic surgery has a cutter. This cutter is inserted into the eyeball. The cutter is composed of an outer cylinder having an opening and an inner cylinder which is brought into close contact with the outer cylinder. By reciprocating the inner cylinder in the axial direction, the object to be sucked that has entered the opening is cut off by the suction force of the suction unit by the opening of the outer cylinder and the tip of the inner cylinder. The object to be aspirated is, for example, a dirty portion of the vitreous body.

[0003]

After the suction and resection as described above, the suction force remains in the inner cylinder and the outer cylinder even after the suction section is stopped. In this state, if the cutter is to be pulled out from the eyeball, the cutter may be pulled together to a portion of the vitreous body that should not be cut off.

In order to eliminate the suction force of the suction unit, it is conceivable to provide the suction unit with a valve for opening to the atmosphere. Alternatively, it is conceivable to crush the tube of the suction unit with a certain instrument to forcibly stop the suction force.

[0005] However, when the valve is opened to the atmosphere by a valve for opening to the atmosphere, it is performed by opening a valve in the suction part. The suction portion and the opening of the cutter are connected by a long tube, and the suction force remains in the long tube. Therefore, it is difficult to immediately stop the suction.

[0006] When the tube in the instrument is crushed to forcibly stop suction, a considerable force is required to crush the tube. The cutter moves with respect to the eyeball by that force,
Moreover, the tip of the cutter may hit a part other than the suction part, which is dangerous. In addition, if the tube is to be operated by the power of an electric means (for example, an electromagnetic valve), the equipment becomes heavy and wiring to the equipment is required, and the structure becomes complicated.

An object of the present invention is to provide a surgical apparatus capable of immediately stopping suction near the opening of a cutter without complicating the structure of the suction section.

[0008]

According to the present invention, an inner member is inserted into a hollow outer member, and an object to be sucked which has entered an opening provided in the outer member is cut off by moving the inner member. A cutter, a suction unit for putting an object to be sucked into the opening, and a drive unit for moving the inner member are provided, and after the suction of the object to be sucked is stopped, the drive unit closes the opening. It is a surgical device.

[0009]

After stopping the suction of the suction unit, the drive unit closes the opening.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG.

In the vitrectomy operation in the ophthalmic operation, a turbid portion of the gel-like vitreous between the lens a and the retina b of the eyeball 43 (hereinafter referred to as an object 30) is removed by suction. Replace with a clear liquid instead. This allows light to pass through the crystalline lens a and reach the retina b, thereby achieving visual acuity recovery.

The surgical apparatus 1 of the present invention comprises a main body 50 and an instrument section 51. The instrument section 51 has a cutter 5, a light guide 6, a plug 7, and a perfusion bottle 8.

The main body 50 has a cutter driving section 24, a suction section 25, and a light source section 26. The foot switch 20 is connected to the main body.

The perfusate 27 in the perfusion bottle 8 is the tube 2
It can be injected into eyeball 43 via 8 and plug 7. By changing the height of the perfusion bottle 8, the injection pressure of the perfusion solution can be changed.

The light source unit 26 irradiates light into the eyeball 43 via the optical fiber 29 and the light guide 6.

Next, the cutter 5 and the suction unit 25 will be described with reference to FIG.
And the cutter driving unit 24 will be described.

The cutter 5 includes a main body 11, an outer cylinder 12, an inner cylinder 13, a rear member 14, a piston 15, a spring 16, a tube 17, and the like. The outer cylinder 12 of the cutter 5 has an eyeball 43
The aspirated object 30 in the eyeball 43 is cut off.

The main body 11 is a part that the operator holds. Body 1
1, the rear end of the outer cylinder 12 is fixed. An opening 18 is formed on the closed distal end side of the outer cylinder 12.

A part of the inner cylinder 13 is inserted into the outer cylinder 12. The outer cylinder 12 and the inner cylinder 13 are made of, for example, steel. The remaining part of the inner cylinder 13 includes the piston 15 and the rear member 14.
Pass through. The inner cylinder 13 is fixed to a piston 15. The inner cylinder 13 is connected to a tube 38.

The spring 16 pushes the piston 15 toward the rear member 14. The spring 16 is disposed between the O-ring presser 34 and the piston 15.

The O-ring presser 34 presses the O-ring 35. The diaphragm 3 is provided between the piston 15 and the main body 11.
6 are arranged. An O-ring 58 is provided between the inner cylinder 13 and the rear member 14.

The cutter driving section 24 has a valve 61, a controller 62, and a compression pump 63. Valve 6
1 has an atmosphere opening part 64 and a tube 65. The valve 61 is connected to the chamber 60 of the cutter 5 via the tube 17. The tube 65 of the valve 61 is
3 is connected.

The ON / OFF operation of the valve 61 is selected by a controller 62. When the valve 61 is turned on, the tube 17 and the compression pump 63 are connected. When the valve 61 is turned off, the tube 17 is opened to the atmosphere opening section 6.
4 is connected.

The suction section 25 has a suction bottle 70, a pressure control section 71, and a vacuum pump 72. Suction bottle 70
Is for accommodating the suction object 30 sucked through the tube 38. The pressure in the suction bottle 70 is controlled by a pressure controller 71 and a vacuum pump 72.

The controller 62 and the pressure controller 71 are separately controlled by the foot switch 20.

[0026]operation  Please refer to FIG.

By the compressed air pulse from the cutter driving unit 24, the inner cylinder 13 moves from this position against the spring 16 and closes the opening 18 of the outer cylinder 12 as shown in FIG. Resection. The suction target 25 guides the suction target 30 through the inner cylinder 13 and the suction tube 73 to the suction bottle 70. The inner cylinder 13 is returned to this position by the action of the spring 16 in the cutter 5. The reciprocating motion is repeated, and the excision and suction are repeated.

In the cutter driving section 24, the controller 62 sends the valve 6
A pulse signal is sent to 1 and the valve 61 is turned ON / OFF to output compressed air in a pulse form.

In the suction unit 25, a suction pressure corresponding to the amount of depression of the foot switch 20 is created by the pressure control unit 71, and the suction bottle 70 is sucked. Thus, the suction object 30 is sucked from the cutter 5.

When the suction object 30 is cut off by the cutter 5 and suction is performed, if for some reason, for example, the suction must be immediately stopped at the end of the operation, the operator turns off all the foot switches 20. I do.

At that time, the pressure control unit 71 of the suction unit 25 becomes the atmospheric pressure, and the inside of the suction bottle 70 is set to the atmospheric pressure. At the same time, the controller 62 of the cutter driving unit 24 keeps the valve ON for a certain period of time, that is, keeps the compressed air in the chamber 60 of the cutter 5. That is, the inner cylinder 13
Moves forward against the force of the spring 16 (the eyeball 4 in the figure).
3), and the opening 18 is immediately closed by the distal end portion 13a of the inner cylinder 13 as shown in FIG. Thereby, the suction is immediately stopped.

After the inside of the tube 73 and the inner cylinder 13 reach the atmospheric pressure, the valve is turned off by the controller 62, and the inner cylinder 13 returns in the opposite direction by the force of the spring 16. Thereby, the opening 18 is opened again as shown in FIG. Thus, the operation can be started again immediately.

By doing so, there is no danger of sucking a part that should not be sucked. Moreover, even if the cutter 5 is pulled out from the eyeball 43, no problem occurs.

Incidentally, the present invention is not limited to the above embodiment.

For example, the inner cylinder of the cutter is not limited to being driven by the compressed air shown in FIG. 2, but may be driven by a motor or a solenoid to close the opening of the outer cylinder. That is, a motor or a solenoid can be used for the cutter drive unit in addition to the use of a compression pump for producing compressed air.

Instead of using a vacuum pump, a device for converting compressed air into vacuum may be used as the suction unit.

[0037]

According to the first aspect of the present invention, since the opening is closed when the suction is stopped without using a complicated structure of the cutter, the suction can be stopped immediately near the opening, and the object to be suctioned can be unnecessarily removed. Prevent suction. As a result, a portion that should not be sucked is not sucked, the portion to be treated is protected, and the safety of the operation can be improved.

According to the second aspect of the present invention, since the opening is opened after a predetermined time, the operation can be started again, and the efficiency of the operation is improved.

[Brief description of the drawings]

FIG. 1 is a view schematically showing an embodiment of a surgical apparatus according to the present invention.

FIG. 2 is a diagram showing an embodiment of the surgical apparatus of the present invention in detail.

FIG. 3 is a diagram showing a state in which the opening of the outer cylinder is closed by the inner cylinder in the embodiment of the surgical apparatus of the present invention.

FIG. 4 is a view showing a state in which the opening of the outer cylinder is opened in the embodiment of the surgical apparatus of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Surgery apparatus 5 Cutter 12 Outer cylinder 13 Inner cylinder 15 Piston 20 Foot switch 24 Cutter drive part 25 Suction part 30 Suction object 61 Valve ◆

Claims (2)

(57) [Claims] A hollow outer member (12) and an inner member (13)
And a cutter (5) configured to cut the object to be sucked (30) entering the opening (18) provided in the outer member (12) by moving the inner member (13); (18) is provided with a suction part (25) for putting the object to be sucked (30) and a drive part (24) for moving the inner member (13), and the suction of the object to be sucked (30) is stopped. Later, the drive unit (2
4) A surgical device configured to close the opening (18). 2. A structure in which the drive unit (24) moves the inner member (13) to open the opening (18) after a certain period of time after the suction of the suction target (30) is stopped. A surgical device according to claim 1.