JPH0251343B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is a precision optometry test for ophthalmological patients. During surgery, the patient's head was shaken sideways. Vertical vibration. Lifting and lowering. This invention relates to a pillow device that is movable laterally and supported by a pillow to facilitate operations such as surgery.

Conventional technology and its problems During eye surgery, the patient is placed face up in a bed, the head is fixed with a pillow, and an ophthalmoscope or microscope is placed above the eye to peer into the fundus of the eye. . However, when the patient is not deep inside the fundus, the angle of elevation of the ophthalmological microscope is limited, making it difficult to perform precise optometry or surgery.

Means for solving the problem The present invention is based on the swing angle. Unlike conventional microscopes, which have limited elevation and elevation angles, a pillow on the bed that allows the patient's head to swing horizontally, vertically, and horizontally and horizontally makes it easier to perform eye surgery and precise optometry. The pillow device is fixed to the end of the bed, and an arc-shaped guide rail is used to swingably support the movable frame. A fixed frame equipped with a rack and this guide rail. A movable frame is supported so as to swing in an arc shape in the direction of oscillation along the rack, and is equipped with two motors for swinging and elevating. Lifting system with a link-shaped main link and sub-link, and a pillow protruding from the tip of the link, which is raised and lowered by the swinging of the link, and which can be moved laterally and horizontally by the drive of the included lateral movement motor. Frame and more.

Embodiments The present invention will be described below based on embodiments shown in the drawings.

In the figure, reference numeral 1 indicates a part of the bed for ophthalmic surgery on the head side, and the pillow device A of the present invention is provided at the end of the bed 1 on the head side. This pillow device A is fixed to a bed 1 and swings laterally along a fixed frame 2 that swingably supports a movable frame and an arcuate guide rail provided on this fixed frame. a movable frame 3, a main link 4, a sub link 5, which are protruded from the movable frame 3 so as to be able to rise and fall freely; The pillow 7 is supported by a frame and is movable laterally. The outline of this pillow device A is shown in Fig. 1.
Furthermore, an explanation of its operation is shown in FIGS. 1 to 8.

As shown in FIGS. 4, 5, and 7, the fixed frame 2 has a frame body 22 integrally provided at the bottom of a mounting bracket 21 that is fixed to the bed 1, and a frame body 22 that is attached to the side of the movable frame. An arcuate guide rail 23 is provided to project laterally with respect to the frame body, and a rack 24 is integrally formed along this guide rail 23 so as to fall within the permissible swing angle in the direction. .

As shown in detail in FIGS. 5 and 7, the movable frame 8 rotatably supports a drive shaft 33 and a shaft 34 which are arranged parallel to each other through bearings 32 and 32 on a frame body 31. The base end 41 of the main link 4 is fixed, and the base end 5 of the sub link 5 is fixed to the shaft 34.
1 is fixed, and two main links 4 and two sub links 5 are supported at both ends of each shaft in parallel.

The frame body 31 is also provided with two motors 8 and 9. One motor 8 has the function of raising and lowering the main link 4 to raise and lower the elevating frame, and the other motor 9 has the function of moving the movable frame 8 to the guide rail 23.
It performs the action of swinging along the
A worm 81 protruding from the motor 8 meshes with a worm gear 82 which is rotatably supported on the drive shaft 33, and the worm gear 82 has a worm 88 which is also rotatably supported on the drive shaft. This worm 88 is integrally provided with the worm gear 84.
is engaged with. The worm 84 passes through the frame body 81 and is rotatably supported by a bearing 85, and is fixed to one end of a shaft 85 disposed orthogonally to the drive shaft, and a pinion gear is attached to the other end of the shaft 85. 86 and a wheel 87 are fixed, and this pinion gear 86 is meshed with the arc-shaped rack 24 provided along the guide rail, so that the wheel 87 is in contact with the upper surface of the guide rail 28, so that when the motor 81 is driven, By rotating the pinion gear 86, the movable frame swings in an arc shape along the rack. Further, as shown in FIGS. 7 and 8, the frame body 81 has a guide wheel 37 that contacts the upper and side surfaces of the guide rail, and a guide ring 36 that contacts the lower surface of the rail, which are vertically opposed to each other. is held in the vertical and lateral directions, so that when the movable frame swings, it moves accurately and smoothly while being regulated by the guide rail without floating. Further, a guide wheel 38 for receiving a reaction force applied to the movable frame is provided in a protruding manner on the frame body 31, and is brought into contact with the lower side surface of the guide rail.

A worm gear 92 is fixed to the drive shaft 33,
It is engaged with a worm 91 protruding from the motor 9,
Warm is generated by driving the motor 9. Worm gear 9
1 and 92, the drive shaft is rotated to raise the main link upward. The motors 8 and 9 can be switched between forward and reverse rotations at respective set speeds.

As shown in detail in FIGS. 4 and 6, the elevating frame 6 supports two parallel shafts 63 and 64 via bearings 62 and 62 on a frame body 61, and the tip side of the main link is attached to the shaft 63. 42, the tip end side 52 of the sub-link is supported on the shaft 64, and a motor 10 is provided, and the pulley 1 protrudes from the motor 10.
1 and a pulley 67 protruding from a screw rod 66 which is rotatably supported on the frame body 61 via a bearing 65, and by selectively switching between forward and reverse rotation of the motor 10, the screw Rotate Eurotude 66 forward and reverse. At this time, the pulley. In addition to the belt, there are gears or sprocket wheels. It is also possible to use chain. A threaded assembly 69 is screwed onto this screw rod 66, and the threaded assembly is moved in the left and right directions along the screw rod by forward and reverse rotation of the screw rod. The tip of this threaded body 69 is pivotally attached via a shaft 72 to a bracket 71 protruding from the lower part of the pillow.

Operation In the pillow device configured as described above, the motor 10 in the lifting frame is rotated in the forward direction or rotated so that the eye to be operated on, that is, either the left eye or the right eye, is placed at the center CL of the microscope as shown in FIG. Then, the screw rod is selectively rotated in forward and reverse directions to move the threaded body and move the pillow 7 in the lateral direction.

Next, the height or lateral swing angle of the head is adjusted, but this is done depending on the angle at which the eye is examined.The height position and elevation angle of the pillow (swinging the head back and forth) are driven by the motor 9. This causes the drive shaft 33 to rotate forward or backward, thereby raising and lowering the elevating frame by the parallelogram movement of the main link and the sub link. It is something to look up to. The angle of lateral swinging, that is, the movement of the head in the lateral direction, is determined by rotating a pinion gear by driving the motor 8, and moving the entire movable frame by rolling it on an arcuate rack.

Effects of the Invention According to the present invention, the pillow supporting the patient's head can be raised and lowered. Because it can be moved by a combination of elevation, horizontal movement, and side-to-side shaking of the head, even if the adjustable angle of the ophthalmological microscope is limited, this pillow device can be used to perform ophthalmological surgery. It has the advantage that the angle to be performed can be arbitrary, ophthalmic surgery that requires precision can be performed accurately, and furthermore, the operation is simple.

[Brief explanation of the drawing]

Figure 1 is a front view, Figure 2 is a side view, Figure 3 is a plan view, Figure 4 is an enlarged front view of the main parts, Figure 5 is a side view taken vertically through the movable frame, and Figure 6 is elevation. FIG. 7 is a side view of the frame portion, FIG. 7 is a sectional view of the fixed frame portion, and FIG. 8 is a sectional view of the guide rail holding portion. 1 is a bed, 2 is a fixed frame, 3 is a movable frame, 4 is a main link, 5 is a sub link, 6 is an elevating frame, 7 is a pillow, 8, 9, and 10 are motors.

Claims (1)

[Claims] 1. An arc-shaped guide rail fixed to the end of the bed to swingably support the movable frame. A fixed frame equipped with a rack and this guide rail. A movable frame is supported so as to swing in an arc shape in the direction of oscillation along the rack, and is equipped with two motors for swinging and elevating. Lifting system with a link-shaped main link and sub-link, and a pillow protruding from the tip of the link, which is raised and lowered by the swinging of the link, and which can be moved laterally and horizontally by the drive of the included lateral movement motor. A pillow device for an ophthalmic surgery bed, characterized in that the frame enables the patient's head to be tilted up and down, swiveled laterally, raised and lowered, and moved laterally to facilitate ophthalmic surgery.