Corneal debonding auxiliary knife

Abstract

The utility model relates to the technical field of medical instruments, in particular to a corneal release auxiliary knife which comprises an annular fixing frame, a sliding knife rest and a release knife. The loosening knife is fixed through the fixing frame and the sliding knife rest, the problem that in the prior art, the loosening knife is prone to inclining or moving up and down, so that the loosening depth is uneven is effectively solved, it is ensured that the loosening depth is even and stable, the situation that the damage degree of cornea tissue is inconsistent is avoided, and postoperative cornea recovery and visual quality improvement are facilitated. Meanwhile, the sliding knife rest stably slides in the fixing frame, the releasing radian can be accurately controlled, it is guaranteed that the releasing radian is smooth, the accuracy of postoperative astigmatism correction is improved, and improvement of the overall visual quality is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, concretely is a corneal release auxiliary knife. BACKGROUND

[0002] In ophthalmic clinic, patient astigmatism problem is more common, seriously influence visual quality. Corneal release surgery is an effective method of correcting astigmatism, however, at present clinical lack suitable corneal release instrument.

[0003] The existing surgical instrument, the release curvature is difficult to accurately control, cannot guarantee the smooth release curvature, and further influence the accuracy of postoperative astigmatism correction and overall visual quality improvement effect. Although the patent CN113749850A sets up annular scale, the operator can release according to the scale, but the scheme still has the following problems: 1. Lack of fixation of the handle in the vertical direction, when performing corneal release operation, the release knife is easy to tilt or move up and down, and the release depth is not uniform, which may cause inconsistent damage to corneal tissue, affecting postoperative recovery of cornea and visual effect. 2. The fixed ring will block the field of view, and the operator has a narrow observation field and observation angle. SUMMARY

[0004] The utility model aims at providing a corneal release auxiliary knife, which is fixed by the fixed frame, i.e. the sliding knife holder, to ensure uniform and stable release depth.

[0005] To solve the above technical problems, the technical scheme provided by the utility model is as follows:

[0006] A corneal release auxiliary knife, comprising an annular fixed frame, a sliding knife holder and a release knife.

[0007] The fixed frame is composed of two concentric ring frames, including an inner ring frame and an outer ring frame, the top and bottom of the inner ring frame and the outer ring frame are respectively provided with a top ring and a bottom ring, and the top ring and the bottom ring of the inner ring frame and the outer ring frame are respectively connected by connecting rods.

[0008] The sliding knife holder comprises a first sliding frame and a second sliding frame arranged oppositely, and the first sliding frame and the second sliding frame slide between the top ring and the bottom ring of the inner ring frame and the outer ring frame.

[0009] The sliding knife holder is provided with a release knife insertion hole, and the release knife is detachably connected with the sliding knife holder through the release knife insertion hole.

[0010] As an improvement, the top ring outside of the inner ring frame and the top ring inside of the outer ring frame are provided with corresponding sliding grooves, and the top ring of the inner ring frame and the outer ring frame adopts a hollow structure.

[0011] The first sliding frame is provided with sliding blocks at two ends, and after the two ends of the first sliding frame are inserted into the sliding groove, the first sliding frame slides along the hollow structure through the sliding blocks.

[0012] As an improvement, the bottom ring of the inner ring frame is provided with a second sliding groove on the outside, and the bottom ring of the outer ring frame is provided with a second sliding groove on the inside.

[0013] The second sliding frame is provided with second sliding blocks at two ends, and after the two ends of the second sliding frame are inserted into the second sliding groove, the second sliding frame slides along the hollow structure through the second sliding blocks.

[0014] As an improvement, the outer ring frame is provided with a handle on one side, and the inner ring frame and the outer ring frame are fixedly connected through the second connecting rod.

[0015] As an improvement, the outer ring frame is provided with a plurality of circumferentially arranged arc-shaped protective plates at the bottom.

[0016] As an improvement, the release knife insertion hole on the first sliding frame is a square hole, and the release knife insertion hole on the second sliding frame is a round hole.

[0017] As an improvement, the release knife is provided with a detachable tool bit at the bottom, and the release knife is provided with a columnar part matched with the square hole at the top.

[0018] As an improvement, the top ring is provided with a scale for indicating the release angle.

[0019] The columnar part is provided with a handle on one side.

[0020] The utility model has the advantages that:

[0021] 1. The utility model fixes the release knife through the fixing frame and the sliding knife rest, effectively solves the problem that the release knife is easy to incline or move up and down in the prior art, ensures uniform and stable release depth, avoids inconsistent damage to corneal tissue, is favorable for postoperative corneal recovery and visual quality improvement.

[0022] 2. The corneal release auxiliary knife has good applicability and service life. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 Structure diagram of a corneal release auxiliary knife in example 1.

[0024] Figure 2 Structure diagram of a corneal release auxiliary knife in example 1.

[0025] Figure 3 Structure diagram of a corneal release auxiliary knife in example 1.

[0026] Figure 4 Structure diagram of a corneal release auxiliary knife in example 1.

[0027] Figure 5 Structure diagram of a corneal release auxiliary knife in example 1.

[0028] Figure 6 Structure diagram of a corneal release auxiliary knife in example 1.

[0029] Figure 7 Structure diagram of a corneal release auxiliary knife in example 1.

[0030] Indicated in the figure:

[0031] 1 - fixed frame, 11 - inner ring frame, 12 - outer ring frame, 13 - top ring, 131 - sliding groove, 14 - bottom ring, 141 - second sliding groove, 15 - connecting rod, 16 - handle, 17 - second connecting rod, 18 - scale, 19 - arc-shaped guard plate, 2 - sliding knife frame, 21 - first sliding frame, 22 - second sliding frame, 23 - sliding block, 24 - second sliding block, 25 - release knife insertion hole, 26 - third connecting rod, 3 - release knife, 31 - detachable knife head, 32 - cylindrical part, 33 - handle, 4 - hollow structure. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0033] Embodiment 1

[0034] The utility model discloses a corneal release auxiliary knife, including annular fixed frame 1, sliding knife frame 2 and release knife 3.

[0035] The fixed frame 1 is composed of two concentric ring frames, including an inner ring frame 11 and an outer ring frame 12, and the top and bottom of the inner ring frame 11 and the outer ring frame 12 are respectively provided with a top ring 13 and a bottom ring 14, and the top ring 13 and the bottom ring 14 of the inner ring frame 11 and the outer ring frame 12 are respectively connected through the connecting rod 15. One side of the outer ring frame 12 is provided with a handle 16; the inner ring frame 11 and the outer ring frame 12 are fixedly connected through the second connecting rod 17.

[0036] The sliding tool holder 2 includes oppositely arranged first and second sliding frames 21 and 22, which slide between the top and bottom rings 13 and 14 of the inner and outer ring frames 11 and 12, respectively.

[0037] The outer side of the top ring 13 of the inner ring frame 11 and the inner side of the top ring 13 of the outer ring frame 12 are provided with corresponding sliding grooves 131, and the inside of the top ring 13 of the inner and outer ring frames 11 and 12 adopts a hollow structure 4.

[0038] The two ends of the first sliding frame 21 are respectively provided with sliding blocks 23, and after the two ends of the first sliding frame 21 are inserted into the sliding grooves 131, the first sliding frame 21 slides along the hollow structure 4 through the sliding blocks 23.

[0039] The outer side of the bottom ring 14 of the inner ring frame 11 and the inner side of the bottom ring 14 of the outer ring frame 12 are provided with corresponding second sliding grooves 141, and the inside of the bottom ring 14 of the inner and outer ring frames 11 and 12 adopts a hollow structure 4.

[0040] The two ends of the second sliding frame 22 are respectively provided with second sliding blocks 24, and after the two ends of the second sliding frame 22 are inserted into the second sliding grooves 141, the second sliding frame 22 slides along the hollow structure 4 through the second sliding blocks 24.

[0041] The sliding tool holder 2 is provided with a release knife insertion hole 25, and the release knife 3 is detachably connected with the sliding tool holder 2 through the release knife insertion hole 25. The release knife insertion hole 25 on the first sliding frame 21 is a square hole, and the release knife insertion hole 25 on the second sliding frame 22 is a round hole.

[0042] The bottom of the release knife 3 is provided with a detachable tool bit 31, and the top of the release knife 3 is provided with a columnar part 32 matched with the square hole. When the release knife 3 is inserted, the cutting edge passes through the round hole, and the cutting body is above the round hole. The round hole can support the release knife 3 and avoid the change of the height of the release knife 3 during operation. The columnar part 32 passes through the square hole to lock the angle of the release knife 3 and avoid the rotation of the release knife 3 during operation. The first and second sliding frames 21 and 22 are provided with a third connecting rod 26 for ensuring that the first and second sliding frames 21 and 22 can rotate synchronously. The release knife insertion holes 25 on the first and second sliding frames 21 and 22 can ensure that the release knife 3 is always in a vertical state during operation.

[0043] The top ring 13 is provided with a scale 18 for indicating the loosening angle. The cylindrical part 32 is provided with a handle 33 on one side. The handle 33 can be used to rotate the loosening cutter 3 to loosen, and can also be used to read the scale 18.

[0044] The outer ring frame 12 is provided with a plurality of circumferentially arranged arc-shaped guards 19 at the bottom. The arc-shaped guards 19 can be along the arc of the eyeball, and the device can be better fixed on the eyeball.

[0045] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A corneal relaxing assistant knife, characterized in that, The utility model relates to a loosening device for a circular saw, which comprises a fixed frame, a sliding knife frame and a loosening knife. The fixed frame is composed of two concentric ring frames, including an inner ring frame and an outer ring frame, the top and bottom of the inner ring frame and the outer ring frame are respectively provided with a top ring and a bottom ring, and the top ring and the bottom ring of the inner ring frame and the outer ring frame are respectively connected through corresponding connecting rods. The sliding knife frame comprises a first sliding frame and a second sliding frame arranged oppositely, and the first sliding frame and the second sliding frame are respectively slid between the top ring and the bottom ring of the inner ring frame and the outer ring frame. The sliding knife frame is provided with a loosening knife insertion hole, and the loosening knife is detachably connected with the sliding knife frame through the loosening knife insertion hole.

2. The corneal relaxing assistant knife according to claim 1, wherein, The outer side of the top ring of the inner ring frame and the inner side of the top ring of the outer ring frame are provided with corresponding sliding grooves, and the inside of the top ring of the inner ring frame and the outer ring frame adopts a hollow structure. The two ends of the first sliding frame are respectively provided with sliding blocks, and after the two ends of the first sliding frame are inserted into the sliding grooves, the first sliding frame slides along the hollow structure through the sliding blocks.

3. The corneal relaxing assistant knife according to claim 1, wherein, The outer side of the bottom ring of the inner ring frame and the inner side of the bottom ring of the outer ring frame are provided with corresponding second sliding grooves, and the inside of the bottom ring of the inner ring frame and the outer ring frame adopts a hollow structure. The two ends of the second sliding frame are respectively provided with second sliding blocks, and after the two ends of the second sliding frame are inserted into the second sliding grooves, the second sliding frame slides along the hollow structure through the second sliding blocks.

4. The corneal relaxing assistant knife according to claim 1, wherein, One side of the outer ring frame is provided with a handle, and the inner ring frame and the outer ring frame are fixedly connected through a second connecting rod.

5. The corneal relaxing assistant knife according to claim 1, wherein, The bottom of the outer ring frame is provided with a plurality of circumferentially arranged arc-shaped protective plates.

6. The corneal relaxation assist knife of claim 1, wherein, The loosening knife insertion hole on the first sliding frame is a square hole, and the loosening knife insertion hole on the second sliding frame is a round hole.

7. The corneal relaxation assist knife of claim 1, wherein, The bottom of the loosening knife is provided with a detachable knife head, and the top of the loosening knife is provided with a columnar part matched with the square hole.

8. The corneal relaxation assist knife of claim 7, wherein, The top ring is provided with a scale for indicating the loosening angle. One side of the columnar part is provided with a handle.

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