KR101958282B1 - Cornea holders - Google Patents

Abstract

The present invention relates to a cornea fixing device capable of shortening surgery time. The cornea fixing device comprises a recipient cornea holder including: a plurality of recipient cornea clips which have a recipient cornea attaching unit to which a recipient cornea remaining on an eyeball of a patient after cutting is attached, and are arranged along the circumference of the recipient cornea to support the recipient cornea; a recipient cornea fixing driving unit for fixing and releasing the recipient cornea held on the recipient cornea attaching unit from the recipient cornea clips; and a recipient cornea tension control unit for bringing the recipient cornea clips to the center of the recipient cornea and separating the recipient cornea clips from the center of the recipient cornea to control tension applied to the recipient cornea.

Description

Corneal Fixation Device {CORNEA HOLDERS}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a corneal anchoring apparatus, and more particularly, to a corneal anchoring apparatus capable of fixing a transplant cornea for a corneal transplant operation.

In general, corneal transplantation is being performed on patients whose corneas have become clouded.

Corneal transplantation is an operation in which the cornea of a patient who has become opaque is removed, and then the cornea of a donor cut at the same size is transplanted.

On the other hand, since the cornea is a flexible material with elasticity, care must be taken to prevent deformation of the cornea during suturing so as to prevent visual impairment and astigmatism after surgery.

On the other hand, in the conventional corneal transplantation operation, the operator manually fixes and sutures the cornea without fixing the cornea.

Therefore, conventionally, the cornea is deformed during the suturing of the cornea, and there is a problem that elaborate surgery is difficult and the operation time is long.

Therefore, there is a need to develop a corneal fixation device that can minimize the deformation of the cornea during suturing of the cornea and shorten the operation time.

Korean Patent Laid-Open Publication No. 10-2001-0089259 (entitled Iris Retractor for Surgical Treatment of Biological Eyes, Disclosure Date: Sep. 29, 2001)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a cornea fixation device capable of minimizing deformation of a cornea during suturing, precisely performing surgery, and shortening an operation time.

An object of the present invention is to provide a retina corneal flap having a recipient corneal attachment / detachment portion in which a recipient cornea that is incised and left in the eye of a patient is removed and which is disposed along the periphery of the recipient cornea, An epithelium clip; A recipient cornea fixation driver for fixing and releasing the recipient cornea fixed to the recipient corneal attachment / detachment portion to the recipient corneal clip; And a recipient corneal tension regulator for adjusting the tension applied to the recipient cornea by moving the recipient corneal clip toward and away from the center of the recipient cornea, A corneal fixation device.

The recipient corneal holder may further include a recipient corneal tension measuring sensor for measuring a tension applied to the recipient corneal membrane.

The recipient corneal holder may further include a recipient corneal clip lifting part for lifting the recipient corneal clip relative to the eye of the recipient.

And a donor cornea holder provided so as to be able to approach and separate from the recipient corneal holder and to support the donor cornea sealed to the recipient cornea held by the recipient corneal holder.

The donor cornea holder includes a plurality of donor cornea clips having a donor cornea attachment / detachment portion to which the donor cornea is attached and detached, the donor cornea clip being disposed along the periphery of the donor cornea to support the donor cornea; A donor cornea fixation driver for fixing and releasing the donor cornea on the donor cornea clip; And a donor cornea tension regulator for adjusting the tension applied to the donor cornea by moving the donor cornea clip toward and away from the center of the donor cornea.

The donor cornea holder may further include a donor corneal tension measuring sensor for measuring a tensile force applied to the donor cornea.

The donor cornea holder may further include a donor cornea clip lifting part for lifting the donor cornea clip relative to the eye of the recipient.

The recipient corneal clip and the donor cornea clip may be arranged alternately along the perimeter of the subject's eye.

The recipient cornea holder and the donor cornea holder, and the photographing unit photographing the recipient cornea and the state of the donor cornea.

According to another aspect of the present invention, there is provided a donor cornea attaching / detaching unit for attaching / detaching a donor cornea to be sealed to a recipient cornea of a patient, comprising: a plurality of donor corneal attachment / detachment units disposed along the periphery of the donor cornea, Donor corneal clip; A donor cornea fixation driver for fixing and releasing the donor cornea on the donor cornea clip; And a donor cornea holder for adjusting a tension applied to the donor cornea by moving the donor cornea clip toward and away from the center of the donor cornea. .

According to the present invention, deformation of the cornea is minimized during suturing of the cornea, and the operation can be finely performed and the operation time can be shortened.

1 is a perspective view of a cornea fixation device according to a first embodiment of the present invention,
Fig. 2 is a bottom perspective view of Fig. 1,
FIG. 3 is a perspective view of the cornea fixation device according to the second embodiment of the present invention,
Fig. 4 is a bottom perspective view of Fig. 3,
5 is a perspective view of the cornea fixation device according to the third embodiment of the present invention,
FIG. 6 is a bottom perspective view of FIG. 5,
Fig. 7 is an exploded perspective view of the main part of Fig. 5,
Figure 8 is a partial view of the recipient corneal holder of Figure 5,
9 is a partial view of the donor cornea holder of FIG. 5,
10 is a schematic view showing the arrangement of the recipient cornea and the donor cornea in the recipient cornea holder and the donor cornea holder,
FIG. 11 is an exemplary view showing a process of lifting / lowering a bracket according to a screw adjustment when the lifting rod passes through a frame and is fixed to a bracket according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. It should be understood, however, that the invention is not limited to the disclosed embodiments, but may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, And is provided to fully convey the scope of the present invention to a technician.

The terminology used herein is for the purpose of illustrating embodiments and is not intended to be limiting of the present invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. The terms " comprises "and / or" comprising "used in the specification do not exclude the presence or addition of one or more other elements in addition to the stated element. Like reference numerals refer to like elements throughout the specification and "and / or" include each and every combination of one or more of the elements mentioned.

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense that is commonly understood by one of ordinary skill in the art to which this invention belongs. In addition, commonly used predefined terms are not ideally or excessively interpreted unless explicitly defined otherwise.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings.

Prior to the description, components having the same configuration are denoted by the same reference numerals as those in the first embodiment. In other embodiments, only components different from those in the first embodiment will be described do.

1 and 2 show a cornea fixation device according to a first embodiment of the present invention.

As shown in these drawings, the cornea fixation device 10a according to the first embodiment of the present invention is a device for fixing the cornea fixing device 10a, which supports the recipient cornea 1 (see Fig. 10 (b) And includes a corneal epithelium holder 11. Here, it is preferable that the recipient cornea 1 is incised in a circular cross-sectional shape at its central portion.

The recipient corneal holder (11) includes a plurality of recipient corneal clips (21) for supporting the recipient cornea (1). A plurality of recurrent corneal clips 21 are arranged at intervals along the peripheries of the recurrent cornea 1 as shown in Fig. 10 (b), and support the recurrent cornea 1 .

A plurality of recurrent corneal clips (21) are respectively supported by a plurality of recurrent corneal clip supporting brackets (31). The recipient corneal clip 21 is supported on the recipient corneal clip supporting bracket 31 so that the recipient corneal membrane attaching / detaching portion 29 to be described later protrudes from the recipient corneal clip supporting bracket 31. Further, the recipient corneal clip supporting bracket 31 is supported on the lifting rod 53 of the recipient cornea clip lifting portion 51, which will be described later.

The recipient corneal clip 21 includes a recipient corneal support plate 23 supported by a recipient corneal clip supporting bracket 31 and a recipient corneal support plate 23 extending from one end of the recipient corneal support plate 23, A recyclable cornea clip plate 25 which is bent and extended toward the back surface of the support plate 23 and approaches and separates from the back surface of the recipient cornea support plate 23, And a shank 27 that extends from the end of the distal end of the recipient corneal clip plate 25 toward the back surface of the recipient corneal clip plate 25 and surrounds the free end of the recipient corneal clip plate 25. The recipient corneal clip 21 has an elastic force such that the recipient corneal support plate 23 and the recipient corneal clip plate 25 are in contact with each other.

The recipient corneal membrane attaching / detaching portion 29 (see FIG. 1), which is opened toward the recipient corneal membrane 1 and is attached to and detached from the recipient corneal membrane 1, is provided between the shank 27 and the free end of the recipient corneal clip plate 25 ). The free ends of the shank 27 and the recipient corneal clip plate 25 forming the first detachable portion 29 are formed so that the surgical needle can pass through the recipient corneal membrane 1 and the donor cornea , And an incision is formed.

The recipient corneal membrane holder 11 includes a recipient corneal fixation unit 21 for fixing and releasing the recipient corneal membrane 1 held on the recipient corneal membrane attaching / detaching unit 29 to the recipient corneal clip 21, And further includes a screw shaft 41 as a driving unit.

The screw shaft 41 is screwed into the recipient corneal clip supporting bracket 31. The free end of the screw shaft 41 penetrating from the recipient corneal clip supporting bracket 31 passes through the recipient corneal support plate 23 and contacts the recipient corneal clip plate 25. [

As a result, when the screw shaft 41 is rotated in one direction, the free end of the screw shaft 41 is fixed by the screw movement between the screw shaft 41 and the recipient corneal clip supporting bracket 31, The separation between the recipient corneal support plate 23 and the recipient corneal clip plate 25 is released and the free end of the recipient corneal clip plate 25 is separated from the shank 27 The recipient corneal membrane 1 held by the recipient corneal annular attachment / detachment section 29 is moved by the recipient corneal clip plate 25 and the shank 27, for example, to a recipient corneal clip 21).

On the other hand, when the screw shaft 41 is rotated in the other direction so that the screw shaft 41 is lifted, the screw shaft 41 is rotated by the screw movement between the screw shaft 41 and the recipient corneal clip supporting bracket 31 The free end portion is lifted from the recipient corneal clip supporting bracket 31 and the recipient corneal support plate 23 and the recipient corneal clip plate 23 are urged by the elastic force acting on the recipient corneal support plate 23 The free end of the recipient cornea clip plate 25 is spaced apart from the shank 27 and is fixed by the recipient cornea clip plate 25 and the shank 27 The recipient cornea 1 is unfixed.

The cornea fixation device according to the first embodiment of the present invention includes a recipient corneal tension regulator 61 that adjusts the tension applied to the recipient cornea 1.

The recipient corneal tension adjusting portion 61 includes a slider 62, a tension adjusting shaft 63, a moving block 64, and a stopper 65.

The slider 62 is slidably coupled to the frame 35 in a reciprocating manner. In the frame 35, a pair of guide rails 37 are formed so as to face each other such that the slider 62 can reciprocate. One end of the slider 62 supports the barrel 52 of the ascending corneal clipping member 51 to be described later and a tension adjusting shaft 63 is screwed to the other end.

The tension adjusting shaft 63 has a rod shape having a predetermined length and is coupled to the slider 62 so as to be screwable.

The moving block 64 is coupled to one end of the tension adjusting shaft 63 and is provided so as to reciprocate linearly inside the slider 62. The moving block 64 linearly reciprocates inside the slider 62 in correspondence with the thread movement of the tension adjusting shaft 63. [

The stopper 65 is arranged inside the slider 62 and is supported between the moving block 64 and the barrel 52 and at the same time by the frame 35. [ The stopper 65 restricts the movement of the moving block 64 moving toward the center of the recipient cornea holder 110 by the screw movement of the tension adjusting shaft 63.

When the tension adjusting shaft 63 is rotated in one direction, the moving block 64 moves toward the center of the recipient corneal membrane holder 11 and the slider 62 moves along the guide rail 37 And moves toward the center of the cornea holder 11. The barrel 52 supported by the slider 62 is also moved toward the center of the recipient corneal membrane holder 11 while the recipient corneal clip supporting bracket 31 and the recipient corneal clip 21 And moves toward the center of the recipient corneal holder 11.

When the moving block 64 comes into contact with the stopper 65, movement of the moving block 64, the slider 62, the ascending corneal clip lifting portion 51, and the recipient corneal clip 21 is restricted .

On the contrary, when the tension adjusting shaft 63 is rotated in the other direction, the moving block 64 moves away from the center of the recipient corneal membrane holder 11, and the slider 62, The recipient corneal clip 21 is spaced apart from the center of the recipient corneal membrane holder 11.

As described above, by providing the recuperative corneal tension adjusting portion 61, it is possible to adjust the tension acting on the recipient cornea 1 supported by the plurality of recurrent corneal clips 21, It is possible to prevent the shape of the body 1 from being deformed.

On the other hand, even if the shape of the recipient cornea 1 to be stitched is not cut into an accurate circle in the incision process, the recipient corneal tension adjuster 61 can control the deformation of the recipient cornea 1. That is, it becomes possible to correspond to the recipient cornea 1 cut in various shapes.

The cornea fixation device 10a according to the first embodiment of the present invention includes a riser corneal clip lifting part 51 for lifting and retracting the recipient corneal clip 21 relative to the eye of the subject.

The recipient corneal clip lifting section 51 includes a barrel 52 supported by a slider 62 of each tension adjuster 61 and a lift rod 53 movably coupled to the barrel 52, And an elevating screw shaft 54 for elevating and lowering the elevating rod 53.

The barrel 52 has a cylindrical shape and is disposed upright above the recuperative cornea clip supporting bracket 31.

The lifting rod 53 is provided so as to protrude from the barrel 52 and has one end connected to the recipient corneal clip supporting bracket 31 and the other end connected to the lifting screw shaft 54.

The elevating screw shaft 54 is screwed into the barrel 52. One end of the lifting screw shaft 54 is connected to the lifting rod 53 and the lifting rod 53 is moved up and down with respect to the barrel 52 in accordance with the screw movement with the barrel 52.

Here, the recipient corneal clip lifting part 41 may be provided with a ball screw, an LM guide, or a piezo-actuator instead of the lifting screw shaft 54.

Thus, by providing the ascending corneal clip lifting portion 51, it is possible to adjust the tension acting on the recipient cornea 1 supported by the plurality of recurrent corneal clips 21, It is possible to prevent the shape of the body 1 from being deformed.

On the other hand, even if the shape of the recipient cornea 1 to be stitched is not cut into an accurate circle in the incision process, the recipient corneal tension adjuster 61 can control the deformation of the recipient cornea 1. That is, it becomes possible to correspond to the recipient cornea 1 cut in various shapes.

As described above, the cornea fixation device 10a according to the first embodiment of the present invention includes the recipient cornea holder 11 that supports the recipient cornea 1 that is incised in the eye of the subject, The suture minimizes the deformation of the cornea, enables precise surgery, and shortens the operation time.

3 and 4 show a cornea fixation device according to a second embodiment of the present invention.

The cornea fixation device 10b according to the second embodiment of the present invention differs from the first embodiment in that there are provided a recipient corneal holder 11 for supporting the recipient cornea that is incised in the eye of the subject, And a donor cornea holder 111 for supporting a donor cornea 5 (see Fig. 10 (a)) sealed with a corneal epithelium.

On the other hand, the donor corneal holder 111 is stacked on the recipient corneal membrane 1 in the recipient corneal membrane holder 11 during the suturing operation of the donor cornea 5. At this time, the plurality of recipient cornea clips 21 of the recipient cornea holder 11 and the plurality of donor cornea clips 121 of the donor cornea holder 111 are not overlapped with each other, The clip 21 and the plurality of donor cornea clips 121 are arranged alternately along the eye of the subject.

The recipient corneal holder 11 in this embodiment is different from the first embodiment described above. And does not include components of the recipient corneal clip lifting portion. The recipient corneal clip supporting bracket 31 for supporting the recipient corneal clip 21 of the recipient corneal holder 11 is supported by the recipient corneal tension adjusting portion 61. [

The recipient corneal tension regulator 61 is constituted by a piezoactuator unlike the first embodiment described above. The recipient corneal clip 21 is connected to the recipient corneal flap 1 according to the driving of the piezo actuator, And adjusts the tension applied to the recipient cornea 1.

Here, although not shown, a recipient corneal tension measuring sensor 69 for measuring the tension applied to the recipient cornea 1 may be provided.

As described above, by providing the recuperative corneal tension adjusting portion 61, it is possible to adjust the tension acting on the recipient cornea 1 supported by the plurality of recurrent corneal clips 21, It is possible to prevent the shape of the body 1 from being deformed.

On the other hand, the donor cornea holder 111 includes a plurality of donor cornea clips 121 for supporting the donor cornea 5. A plurality of donor cornea clips 121 are arranged at intervals along the periphery of the donor cornea 5, as shown in Fig. 10 (a), and support the donor cornea 5.

A plurality of donor cornea clips 121 are respectively supported by a plurality of donor cornea clip supporting brackets 131. The donor cornea clip 121 is supported on the donor cornea clip supporting bracket 131 so that the donor cornea attaching / detaching portion 129, which will be described later, protrudes from the donor cornea clip supporting bracket 131. Further, the donor cornea clip supporting bracket 131 is supported by the donor cornea tension adjusting portion 161.

The donor cornea clip 121 includes a donor cornea support plate 123 supported on the donor cornea clip supporting bracket 131 and a donor cornea support plate 123 extending from one end of the donor cornea support plate 123 toward the back surface of the donor cornea support plate 123 And a donor cornea clip plate 125 extending and spaced apart from and behind the donor corneal support plate 123. Thus, the donor cornea clip 121 has a U-shaped cross-sectional shape, for example, a spring clip shape. The donor cornea clip 121 has an elastic force such that the donor cornea support plate 123 and the donor cornea clip plate 125 are in contact with each other.

A donor cornea attaching / detaching portion 129 is formed between the rear surface of the donor corneal support plate 123 and each of the free end portions of the donor cornea clip plate 125 so as to open to the donor cornea 5 and to which the donor cornea 5 is attached and detached . The donor corneal support plate 123 and the donor corneal clip plate 125 that form the donor corneal detachable portion 129 are free ends of the donor corneal clip plate 125 when the surgical needle So that it can pass through.

The donor cornea holder 111 further includes a screw shaft 141 as a donor cornea fixation driving unit for fixing and releasing the donor cornea 5 stuck to the donor cornea attachment / detachment unit 129 to the donor cornea clip 121 do.

The screw shaft 141 is screwed into the donor cornea clip supporting bracket 131. The free end of the screw shaft 141 penetrating the donor corneal clip supporting bracket 131 penetrates the donor cornea support plate 123 and contacts the donor cornea clip plate 125.

As a result, the free end of the screw shaft 141 is rotated by the screw movement between the screw shaft 141 and the donor cornea clip supporting bracket 131 when the screw shaft 141 is rotated in one direction as the donor cornea fixed driving unit 141 The donor corneal clip support plate 123 is lowered from the donor corneal clip support bracket 131 and the donor corneal clip plate 125 is spaced apart from the donor corneal clip support plate 123, 123 are spaced apart from each other, the donor cornea 5 stuck to the donor cornea attaching / detaching portion 129 is released.

On the other hand, when the screw shaft 141 is rotated in the other direction so that the screw shaft 141 is lifted, the free end of the screw shaft 141 due to the screw movement between the screw shaft 1410 and the donor cornea clip supporting bracket 131 The donor cornea clip plate 125 is moved toward the donor cornea support plate 123 by the elastic force acting on the donor cornea clip plate 125 at this time, The donor cornea 5 mounted on the part 129 is fixed to the donor cornea clip 121 by a donor corneal support plate 123 and a donor cornea clip plate 125, for example.

The donor corneal tension adjuster 161 is constituted by a piezo actuator and the donor corneal clip 21 is moved toward and away from the center of the donor cornea 1 according to the driving of the piezo actuator. To adjust the tension applied thereto.

Here, although not shown, a donor cornea tension measuring sensor 169 for measuring the tension applied to the donor cornea 1 may be provided.

Thereby, the donor cornea tension regulating portion 161 is provided to adjust the tension acting on the donor cornea 5 supported by the plurality of donor cornea clips 121 so that the shape of the donor cornea 5 is deformed .

Reference numeral 85 denotes a cable for supplying a signal and a power source of the piezo actuator of the recipient cornea holder 11 and reference numeral 185 denotes a signal of the piezo actuator of the donor cornea holder 111, .

As described above, the cornea fixation apparatus 10b according to the second embodiment of the present invention includes a recipient corneal membrane holder 11 for supporting a recipient cornea that is incised in the eye of the subject, The donor cornea holder 111 for supporting the donor cornea is provided to minimize the deformation of the cornea during suturing of the cornea, to enable precise operation and to shorten the operation time.

5 to 11 show a corneal fixing apparatus according to a third embodiment of the present invention.

As shown in these drawings, the cornea fixation device 10c according to the third embodiment of the present invention is different from the above-described second embodiment in that the recipient cornea clip 21 is moved up and down relative to the eye of the subject And a donor cornea clip lifting portion 151 for lifting the donor cornea clip 121 relative to the eye of the subject.

The recipient corneal clip lifting section 51 includes a barrel 52 supported by the frame 35, a lifting rod 53 which is movably coupled to the barrel 52, And an elevating screw shaft 54.

The barrel 52 has a cylindrical shape and is disposed upright above the recuperative cornea clip supporting bracket 31.

The lifting rod 53 is provided so as to protrude from the barrel 52 and has one end connected to the recipient corneal clip supporting bracket 31 and the other end connected to the lifting screw shaft 54. That is, the lifting rod 53 is connected to the recipient corneal clip supporting bracket 31 located at the lower end of the frame 35 through the frame 35 as shown in FIG. Accordingly, the recipient corneal clip retaining bracket 31 moves up and down according to the movement of the lifting rod 53 as the lifting screw shaft 54 moves. Specifically, the recipient corneal clip supporting bracket 31 contacts the frame 35 as the lifting rod 53 is lifted up to the maximum (see FIG. 11 (a)), and as the lifting rod 53 descends And is spaced apart from the frame 35 (see Fig. 11 (b)).

Specifically, the barrel 52 is fixed in position irrespective of the movement of the lifting rod 53 and the lifting screw shaft 54, and the distance between the barrel 52 and the frame is maintained. For example, the barrel 52 is connected to a support of a specific length extending from the frame 35 and is spaced apart by the length of the support. The distance between the barrel 52 and the frame 35 is maintained at the length of the support regardless of the movement of the lifting rod 53 in accordance with the operation of the lifting screw shaft 54. [ In addition, the barrel 52 of each recipient corneal clip elevation portion 51 can be connected to a separate support at the same height to maintain a specific distance of the frame 35. At this time, the support connected to the barrel 52 is coupled to the frame 35, so that the barrel 52 and the frame 35 can move together while maintaining a constant distance.

The elevating screw shaft 54 is screwed into the barrel 52. One end of the lifting screw shaft 54 is connected to the lifting rod 53 and the lifting rod 53 is moved up and down with respect to the barrel 52 in accordance with the screw movement with the barrel 52.

Here, the recipient corneal clip lifting part 41 may be provided by a ball screw, an LM guide, or a piezo actuator instead of the lifting screw shaft 54. [

The donor corneal clip lifting portion 151 includes a barrel 152 supported by the frame 135, a lifting rod 153 which is movably coupled to the barrel 152, a lifting screw 153 that reciprocates the lifting rod 153, And includes an axis 154.

The barrel 152 has a tubular shape and is disposed upright above the donor cornea clip supporting bracket 31.

One end of the lifting rod 153 is connected to the donor cornea clip supporting bracket 31 and the other end of the lifting rod 153 is connected to the lifting screw shaft 154. That is, the lifting and lowering rod 153 is moved in the vertical direction of the frame 135 through the frame 135, like the movement of the lifting portion 51 of the recipient cornea clip in accordance with the movement of the lifting rod 53 shown in FIG. And is connected to the donor cornea clip supporting bracket 31 located at the lower end. Thus, the donor cornea clip supporting bracket 31 moves up and down according to the movement of the lifting rod 153 in accordance with the movement of the lifting screw shaft 154. The donor corneal clip lifting portion 151 has the same structure as the recipient corneal clip lifting portion 51 so that the distance between the barrel 152 and the frame 135 can be kept constant. Is screwed into the barrel 152. [ One end of the lifting screw shaft 154 is connected to the lifting rod 153 and the lifting rod 153 is moved up and down with respect to the barrel 152 in accordance with the screw movement with the barrel 152.

Here, the donor cornea clip lifting part 141 may be provided by a ball screw, an LM guide, or a piezo actuator instead of the lifting screw shaft 154. [

The cornea fixation apparatus 10 further includes a recipient cornea holder driving unit 71 and a donor cornea holder driving unit 171. [

The recipient cornea holder drive unit 71 may be a robot having multiple articulated arms operating in multiple directions. On the other hand, by connecting the recipient cornea holder drive portion 71 with the frame 35 of the recipient cornea holder 11, the recipient cornea holder 11 can be freely moved in the X, Y, .

The donor cornea holder drive unit 171 may be a robot having a multi-joint arm that operates in multiple directions, similar to the recipient cornea holder drive unit 71. [ The donor cornea holder drive unit 171 is connected to the frame 135 of the donor cornea holder 111 so that the donor cornea holder 111 can be freely positioned in the directions of the X, Y, and Z axes.

The cornea fixation device 10 according to the third embodiment of the present invention includes a recipient corneal holder 11 supporting the recipient cornea 1 for corneal transplantation, The positions of the recipient corneal holder 11 and the donor corneal membrane holder 111 and the state of the recipient corneal membrane 1 and the donor cornea 5 are set to be And a photographing unit 81 for photographing.

Thus, by providing the photographing section 81, the practitioner can accurately grasp the arrangement position of each of the cornea holders 11, 111 provided in the photographing section 81 and the deformation state of each of the cornea films 1, You will be able to do surgery. On the other hand, as the photographing unit 81, a camera, a microscope, or the like may be provided.

The corneal transplantation procedure using the cornea fixation device 10c according to the third embodiment of the present invention will now be described.

First, the recipient cornea holder drive section 71 is driven to position the recipient cornea holder 11 above the eyes of the recipient.

After the recipient cornea 1 that has been incised in the eye of the recipient is placed on the recipient corneal membrane attaching / detaching portion 29 of the recipient corneal clip 21 of the recipient corneal holder 11, The recipient cornea 1 is fixed to the recipient corneal clip 21 by driving the corneal fixation driver 41. The recipient corneal clip 1 is fixed to the recipient corneal clip 21. [

The donor cornea 5 to be sealed in the recipient cornea 1 is placed on the donor cornea detachable portion 129 of the donor cornea clip 121 of the donor cornea holder 111, And the donor cornea 5 stuck to the donor cornea attaching / detaching portion 129 is fixed to the donor cornea clip 121.

The process of fixing the recipient cornea 1 to the recipient corneal clip 21 and fixing the donor cornea 5 to the donor cornea clip 121 may be performed in a different order.

Then, the donor cornea holder drive section 171 is driven to stack the donor cornea holder 111 on the upper surface of the recipient cornea holder 11.

The arrangement of the recipient cornea holder 11 and the donor cornea holder 111 does not depend on the operation of the recipient cornea holder drive part 71 and the donor cornea holder drive part 171, .

At this time, in order to prevent the plurality of recurrent corneal clips 21 of the recipient cornea holder 11 and the plurality of donor cornea clips 121 of the recipient cornea holder 111 from overlapping each other, The annular corneal clip 21 and the plurality of donor cornea clips 121 are arranged alternately along the periphery of the recipient cornea 1. The recipient corneal clip lifting portion 51 and the donor corneal clip lifting portion 151 are operated to adjust the interval between the recipient corneal membrane 1 and the donor cornea 5 for optimal suturing operation . When the shape of each of the corneas 1 and 5 is deformed while grasping the image of the deformed state of each of the corneas 1 and 5 provided from the photographing unit 81, And the donor cornea tension regulator 161 are operated to maintain the cornea films 1,5 in a normal shape.

Then, a sealing treatment point formed by the recipient corneal holder 11 and the donor corneal holder 111, for example, in this embodiment, between the adjacent recipient corneal clip 21 and the donor cornea clip 121, The recipient cornea 1 and the donor cornea 5 are sealed together through the incision area of each recipient corneal clip 21 and the sealing point formed in the incision area of each donor cornea clip 121. [

Thereafter, the donor cornea fixation driving unit 141 is driven so that the donor cornea 5 is released from the donor cornea clip 121 and then the donor cornea holder 111 is moved to the recipient cornea holder 121 11).

After the recipient cornea fixation driver 41 is driven so that the recipient cornea 1 is released from the recipient corneal clip 21, the recipient cornea holder 11 is moved to the recipient cornea 1).

This completes the corneal transplant procedure.

Thus, by providing a recipient corneal holder for supporting the recipient cornea and a donor corneal holder for supporting the donor cornea sealed in the recipient cornea, the deformation of the cornea Minimizes the number of operations, enables precise operation, and shortens the operation time.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand. Therefore, it should be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

10a, 10b, 10c: Corneal fixation device
11: Recipient corneal holder
21: Recipient Corneal Clip
41: Screw shaft
51: Recipient corneal clip lifting portion
61: Recipient corneal tension regulator
65: Recipient corneal tension measuring sensor
71: Recipient cornea holder driving part
81:
111: donor corneal holder
121: donor cornea clip
141: Screw shaft
151: Donor corneal clip lifting part
161: donor corneal tension regulator
165: Donor Corneal Tension Measurement Sensor
171: donor cornea holder driving part

Claims (10)

A plurality of recipient corneal clips having a recipient corneal attachment / detachment portion for removing and attaching the remaining corneal epithelium incised in the eye of the recipient, the recipient corneal clip being disposed along the peripheries of the recipient cornea to support the recipient cornea;
A recipient cornea fixation driver for fixing and releasing the recipient cornea fixed to the recipient corneal attachment / detachment portion to the recipient corneal clip; And
And a recipient corneal tension adjuster for adjusting a tension applied to the recipient cornea by moving the recipient corneal clip toward and away from the center of the recipient cornea, Corneal fixation, including. The method according to claim 1,
The recipient corneal holder includes:
Further comprising a recuperative corneal tension measuring sensor for measuring a tensile force applied to the recipient cornea. The method according to claim 1,
The recipient corneal holder includes:
Further comprising a recuperative corneal clip lifting portion for lifting the recipient corneal clip relative to the eye of the subject. The method according to claim 1,
Further comprising a donor cornea holder provided so as to be accessible to and spaced from the recipient corneal holder and supporting a donor cornea sealed to the recipient corneal membrane supported by the recipient corneal holder. 5. The method of claim 4,
Wherein the donor cornea holder comprises:
A plurality of donor cornea clips having a donor corneal attachment / detachment portion to which the donor cornea is attached and detached, the donor cornea clip being disposed along the periphery of the donor cornea to support the donor cornea;
A donor cornea fixation driver for fixing and releasing the donor cornea on the donor cornea clip; And
And a donor cornea tension regulator for adjusting the tension applied to the donor cornea by moving the donor cornea clip toward and away from the center of the donor cornea. 6. The method of claim 5,
Wherein the donor cornea holder further comprises a donor corneal tension measuring sensor for measuring a tension applied to the donor cornea. 6. The method of claim 5,
Wherein the donor cornea holder comprises:
Further comprising a donor cornea clip lifting portion for lifting the donor cornea clip relative to the eye of the subject. 6. The method of claim 5,
Wherein the recipient cornea clip and the donor cornea clip are alternately disposed along the eye of the subject. 5. The method of claim 4,
Further comprising a photographing section for photographing the arrangement state of the recipient cornea holder and the donor cornea holder and the state of the recipient cornea and the state of the donor cornea. A plurality of donor cornea clips having a donor corneal attachment / detachment portion to which a donor corneal membrane is detachably attached to a recipient's cornea to be sealed, the donor corneal clip being disposed along the periphery of the donor cornea to support the donor cornea;
A donor cornea fixation driver for fixing and releasing the donor cornea on the donor cornea clip; And
And a donor cornea holder for adjusting a tension applied to the donor cornea by moving the donor cornea clip toward and away from the center of the donor cornea.

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