JP3580668B2 - Lens film drilling device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention is an apparatus for piercing the lens capsule, for example, an eyeball piercing apparatus suitable for use in replacing the lens with an artificial lens in surgery for cataracts, etc. The present invention relates to a device for piercing a film.
[0002]
[Prior art]
A new method of replacing the lens with an artificial one has been proposed as a method for cataract surgery, but according to this method, it is necessary to make a small hole (about 1 mm in diameter) in the lens capsule.
[0003]
The new surgical method,
1. Make a small cut in the cornea with a scalpel or the like.
2. Drill the small holes mentioned above in the lens capsule.
3. An ultrasonically vibrating chip is inserted through the small hole, the crystalline lens is gelled, and the gel is sucked out by vacuum or the like.
4. Insert artificial lens (liquid) and finish.
[0004]
[Problems to be solved by the invention]
As described above, in cataract surgery, a small hole is made in the lens capsule, and the blade used at that time is a cylindrical (pipe) blade as shown at 40 in FIG. The portion has a tapered portion 40a and a tip 40b as a blade, and is generally called a trepan bar. However, simply rotating the trepan bar against the crystalline lens membrane does not necessarily cut the entire circumference cleanly, and often leaves a part without cutting. It is considered that this is because the blade portion of the trepan bar is damaged, cutting is started before the rotation speed of the trepan bar is sufficiently increased, or cutting is performed in a state where the blade edge does not contact the coating at a right angle.
[0005]
The present invention has been made in view of the above-described circumstances, and normally, the blade portion of the trepan bar is retracted into the outer cylinder so that the blade portion is not damaged by an external impact or the like, Be able to drill cleaner holes.
[0006]
Another object of the present invention is to make it possible to make a hole in the crystalline lens membrane after the rotation speed of the trepan bar is sufficiently increased, so that a more beautiful hole can be made. .
[0007]
Further, a negative pressure is applied to the surface of the lens film, the lens film is sucked to the cutting tool at the tip of the trepan bar, and the trepan bar is rotated so that a cleaner hole can be formed.
[0008]
[Means for Solving the Problems]
According to the first aspect of the present invention, an axially movable movable rotary shaft to which a trepan bar is connected directly or through a relay rotary shaft, and the movable rotary shaft rotated by a power source such as a motor are axially movably connected. A rotary shaft, an outer cylinder having the trepan bar as an inner cylinder, an actuator for moving the movable rotary shaft in an axial direction, and a controller for controlling an operation of the trepan bar; the tip being retracted into the outer tube, said trepan bar and the outer cylinder by the controller the power source is driven is a negative pressure, animal power source is driven after a predetermined time has elapsed, the An actuator is driven so that the tip of the trepan bar projects a predetermined amount from the tip of the outer cylinder.
[0009]
According to a second aspect of the present invention, in the first aspect of the invention, the movable rotating shaft is rotatably mounted on a movable base via a bearing, and the movable base is movable in the axial direction by the actuator. It is characterized by.
[0010]
The invention according to claim 3, in the invention of claim 1 or 2, which has a foot switch for controlling the operation of said trepan bar having a vacuum device in said controller, said by operating the foot switch trephine is obtained by, characterized in that the intake bar (inner cylinder)及beauty outer tube.
[0011]
The invention according to claim 4, characterized in that in the invention of claim 3, the depression of the foot switch to the trepan bar及beauty outer tube to a negative pressure, said trepan bar rotated by following the depression, said the next depression trephine A bar is projected from the outer cylinder.
[0012]
According to a fifth aspect of the present invention, in the invention of the fourth aspect, the controller has a timer, and after a predetermined time set by the timer elapses, stops the rotation of the intake air and the trepan bar, and removes the trepan bar from the outside. It is characterized by being retracted into a cylinder.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a view showing an embodiment of a lens film drilling apparatus according to the present invention, in which 10 is a handpiece according to the present invention, 20 is a controller for controlling the operation of the handpiece 10, and handpiece 10 is , A power part (motor part) 11, a handpiece part 12, a blade part 13, an outer cylinder part 14, an inner cylinder (trepan bar) part 15, etc., a power cord 16 for the power part (motor part), a trepan bar (inside). The cylinder 20 is connected to a controller 20 through an intake tube (silicone tube) 17 for taking in air through the outer cylinder 14.
[0014]
The controller 20 has a built-in trepan bar (inner cylinder) 15 through the intake tube 17, a vacuum device for suctioning the inside of the outer cylinder, a control device for controlling the motor in the motor unit 11 through the motor cord 16, and the like. The motor is controlled by a foot switch 31 for operation and a foot switch 32 for emergency stop.
[0015]
The controller 20 includes a gas-liquid separator 21 for separating dirt (liquid, solid) sucked through the suction tube 17 from the suction (air), a suction (suction) pressure adjustment knob 22, a vacuum pressure meter 23, and an emergency switch 24. , Vacuum (intake), rotation of a trepan bar, an indicator light 25 such as an LED for displaying an operation state such as protrusion of a trepan bar (blade), a timer setting knob 26, and the like. Pressing it again will rotate the trepan bar, and pressing it again will cause the trepan bar (inner cylinder) to protrude from the outer cylinder, making it possible to drill holes, and the timer will stop all after a certain period of time.
[0016]
FIG. 2A is an exploded perspective view of the handpiece 10 shown in FIG. 1, and the motor unit (power unit) 11 always retracts the trepan bar (inner tube) 15 into the outer tube 14, The actuator 11a includes an actuator 11a having a built-in actuator that projects a predetermined amount (for example, 3 mm) from the outer cylinder 14, and the operating rod 11b is moved in the direction of arrow A by the actuator 11a.
[0017]
FIG. 2B is a diagram showing an example of the actuator. FIG. 2B ₁ has an iron core 11b serving as the operating rod 11b and a coil 11d, and a current is supplied to the coil 11d. An example in which the iron core (operating rod) 11b is moved in the direction of arrow A by flowing, FIG. 2 (B ₂ ) has a small motor 11e, and the operating rod 11b is rotated by the motor 11e. (The motor is reversed when the motor is reversed), but these are merely examples, and the present invention is not limited to these examples, and applies any known driving means. be able to.
[0018]
FIG. 2C is a schematic diagram of a main part for explaining the details inside the handpiece unit 12, wherein 1 is a rotating shaft connected to a rotating shaft 11 c rotated by a motor in the motor unit 11, and 2 is a rotating shaft. An operating rod 3 connected to an operating rod 11b which is moved in the direction of arrow A by an actuator in the motor unit 11 is a movable rotating shaft connected to the rotating shaft 1 for transmitting the rotation of the rotating shaft 1 to the trepan bar. , The rotating shaft 1 and the movable rotating shaft 3 are connected by a pin 4 provided in the rotating shaft 1 and a receiving hole 5 provided in the movable rotating shaft 3. 1 is transmitted to the movable rotating shaft 3, and the movable rotating shaft 3 is movably connected in the axial direction (A direction) by the receiving hole 5.
[0019]
The movable rotary shaft 3 is mounted on a movable base 7 together with a bearing 6 that rotatably supports the movable rotary shaft 3, and the movable base 7 is moved in the direction of arrow A by the operating rod 2. Has become. Reference numeral 8 denotes a relay rotary shaft having one end connected to the movable rotary shaft 3 and the other end connected to the trepan bar 15. As is clear from the above description, the trepan bar 15 is rotated by the motor in the power unit 11 and is moved in the axial direction by the actuator.
[0020]
【The invention's effect】
As described above, according to the present invention, it is possible to move the trepan bar 15 back and forth while rotating the trepan bar 15, whereby the trepan bar 15 is moved until the rotation of the motor (trepan bar) is sufficiently increased. After the motor is sufficiently raised (for example, after a predetermined time elapses), the actuator is actuated, and the trepan bar 15 is made to protrude from the outer tube 14 to make a hole in the lens capsule. Can be drilled neatly. Further, the amount by which the trepan bar 15 protrudes from the outer cylinder 14 can be controlled to a predetermined amount (for example, about 3 mm because the thickness of the crystalline lens is about 4 mm), so that the trepan bar does not enter the crystalline lens more than necessary. It is safe. In addition, during drilling work, since the air is sucked through the trepan bar (inner cylinder) 15 and the outer cylinder 14, the film on the lens surface is attracted to the blade portion of the trepan bar, and the blade portion is brought into close contact with the blade, so that a clean hole is formed. Can be. It is to be noted that a structure in which the suction (suction) is performed through the gap between the trepan bar (inner cylinder) 15 and the outer cylinder 14 is simple, but if it is only that, the gap may be too narrow and the suction may be weak. It is good to suck through the trepan bar (inner cylinder) 15 like this.
[Brief description of the drawings]
FIG. 1 is an overall configuration diagram for explaining an embodiment of an apparatus for forming a hole in a crystalline film according to the present invention.
FIG. 2 is an exploded configuration diagram for explaining details of a handpiece according to the present invention.
FIG. 3 is a perspective view showing a trepan bar.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... hand piece, 11 ... power part (motor part), 12 ... hand piece part, 13 ... blade part, 14 ... outer cylinder, 15 ... trepan bar, 16 ... motor power cord, 17 ... intake tube, 20 ... controller 21: gas-liquid separator, 31, 32: foot switch.

Claims (5)

An axially movable movable rotary shaft to which a trepan bar is connected directly or through a relay rotary shaft; a rotary shaft rotated by a power source such as a motor to connect the movable rotary shaft so as to be movable in the axial direction; An outer cylinder having an inner cylinder, an actuator for moving the movable rotary shaft in the axial direction, and a controller for controlling the operation of the trepan bar, wherein the tip of the trepan bar is inside the outer cylinder. are retracted, the trepan bar and the outer cylinder by the controller the power source is driven is a negative pressure, wherein said animal power source is driven after a predetermined time has elapsed, the actuator is driven A hole drilling device for a lens capsule, wherein a tip of a trepan bar projects from a tip of the outer cylinder by a predetermined amount. 2. The lens body coating according to claim 1, wherein the movable rotary shaft is rotatably mounted on a movable base via a bearing, and the movable base is movable in the axial direction by the actuator. apparatus. Wherein the trephine and having a foot switch for controlling the operation of the bar has a vacuum device to said controller, to the intake of said trepan bar (inner cylinder)及beauty outer tube by operating the foot switch The apparatus for drilling a lens film according to claim 1 or 2, wherein: Claims wherein the said trepan bar及beauty outer tube to a negative pressure by the depression of foot switch, said trepan bar rotated by following the depression, and wherein said trepan bar be projected from the outer tube by the following depression Item 4. An apparatus for drilling a lens film according to Item 3. The controller has a timer, and after a predetermined time period set by the timer, stops the intake and rotation of the trepan bar, and retreats the trepan bar into the outer cylinder. An apparatus for drilling a crystalline lens film according to claim 4.

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