Corneal relaxation aid

Abstract

The embodiment of the application discloses a corneal limbal relaxing assistant, which comprises a fixing part with a cavity for a cutting knife to operate, the fixing part comprises a large-diameter end and a small-diameter end, the small-diameter end of the fixing part is used for being attached to the surface of an eyeball and corresponds to the corneal limbus of the eyeball, so that the cutting knife performs a relaxing operation on the cornea along the edge of the small-diameter end of the fixing part, and a first limiting stopper is arranged on the side wall of the fixing part; a movable part is arranged in the cavity of the fixing part, the movable part is provided with a second limiting stopper, and when the cutting knife operates along the edge of the small-diameter end of the fixing part, the first limiting stopper and the second limiting stopper limit the cutting knife. The corneal limbal relaxing assistant provided by the application improves the convenience of the corneal limbal relaxing incision operation by performing the relaxing operation on the cornea along the edge of the small-diameter end of the fixing part and limiting the cutting knife through the first limiting stopper and the second limiting stopper arranged on the fixing part.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically, to a corneal release aid. Background Technology

[0002] Astigmatism is a common type of refractive error, caused by a difference in refractive power between two meridians. In the eye, astigmatism primarily originates from the cornea, and the meridian with the greatest refractive power is called the corneal steep axis. Common methods for correcting astigmatism include eyeglasses, rigid gas permeable lenses, and surgery. For cataract patients with concurrent corneal astigmatism, correcting the corneal astigmatism during cataract removal and intraocular lens implantation can improve postoperative uncorrected visual acuity and visual quality.

[0003] In existing technologies, limbal relaxation incision (LRI) is commonly used to correct astigmatism. LRI uses a fixed-depth cutter (such as the corneal relaxation cutter from Mani in Japan) to make an arc-shaped incision at the limbus corresponding to the steep axis of the cornea, thereby releasing local tension of the cornea and changing the shape of the cornea, thus correcting astigmatism. However, during LRI surgery, it is difficult to control the smoothness and length of the incision arc, making the LRI surgery relatively difficult to perform.

[0004] Therefore, how to improve the convenience of limbal release incision surgery has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a corneal release aid to improve the convenience of limbal release incision surgery.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A corneal release aid, comprising:

[0008] A fixing member has a cavity for the cutting blade to operate. The fixing member includes a large-diameter end and a small-diameter end. The small-diameter end of the fixing member is used to attach to the surface of the eyeball and corresponds to the corneal limbus of the eyeball, so that the cutting blade can perform a loosening operation on the cornea along the edge of the small-diameter end of the fixing member. A first limiting stop is provided on the side wall of the fixing member.

[0009] The movable component is movably disposed within the cavity of the fixed component. The movable component is provided with a second limiting stop. When the cutting blade operates along the edge of the small diameter end of the fixed component, the first limiting stop and the second limiting stop limit the cutting blade.

[0010] Optionally, in the above-mentioned corneal release aid, the movable part is attached to the side wall of the fixed part and is coaxially arranged with the fixed part, and the movable part rotates around the circumference of the fixed part.

[0011] Optionally, in the above-mentioned corneal release aid, the sidewall of the fixation member is provided with an arc-shaped opening, the movable member includes a sidewall for adjusting the size of the arc-shaped opening, the first limiting stop is a first limiting baffle disposed on the side of the arc-shaped opening, and the second limiting stop is a second limiting baffle disposed on the sidewall of the movable member.

[0012] Optionally, in the above-mentioned corneal release aid, the inner walls of the large-diameter end and the small-diameter end of the fixation member are respectively provided with scale markings. The scale markings on the inner wall of the small-diameter end of the fixation member are used to correspond to the reference marking lines on the surface of the eyeball, and the scale markings on the inner wall of the large-diameter end of the fixation member are used to indicate the relative rotation angle between the movable member and the fixation member.

[0013] Optionally, in the above-mentioned corneal release aid, the relative rotation between the movable member and the fixed member is restricted by a limiting component. The limiting component includes a first limiting part and a second limiting part. The first limiting part is disposed on the fixed member, and the second limiting part is disposed on the movable member. The first limiting part and the second limiting part cooperate to restrict the relative rotation between the movable member and the fixed member.

[0014] Optionally, in the above-mentioned corneal release aid, the first limiting part is a plurality of grooves circumferentially arranged along the large-diameter end of the fixation member, and the second limiting part is an insertion part that mates with the grooves; or,

[0015] The first limiting part is a plurality of plug-in parts arranged circumferentially along the large diameter end of the fixing member, and the second limiting part is a groove that mates with the plug-in parts.

[0016] Optionally, in the above-mentioned corneal release aid, the first limiting portion is a strip-shaped band disposed on the side wall of the fixation member; and / or,

[0017] The second limiting part is a strip-shaped band disposed on the side wall of the movable part.

[0018] Optionally, in the above-mentioned corneal release aid, a handle is provided on the side wall of the fixation member.

[0019] Optionally, in the above-mentioned corneal release aid, the small-diameter end of the fixation member is provided with a base, and the base is provided with a plurality of protrusions spaced apart in the circumferential direction to prevent the fixation member from sliding relative to the surface of the eyeball.

[0020] Optionally, in the above-mentioned corneal release aid, the base and the fixing member are movably connected, and the handle is disposed on the base; or,

[0021] The base and the fixing component are an integral structure.

[0022] The corneal release aid provided by the present invention includes a fixing member, the small-diameter end of which is attached to the surface of the eyeball and corresponds to the corneal limbus. A first limiting stop is provided on the side wall of the fixing member, and a movable member is disposed in the cavity of the fixing member, with a second limiting stop provided on the movable member. When a cutting blade is used to release the cornea along the edge of the small-diameter end of the fixing member, the first and second limiting stops limit the cutting blade to control the incision length.

[0023] Compared with the prior art, the corneal release aid provided by the present invention releases the cornea by cutting along the edge of the small diameter end of the fixation member with a cutting blade, ensuring the smoothness of the incision. At the same time, the cutting blade is limited by the first and second limiting stops set on the fixation member, ensuring the length of the incision. This reduces the difficulty of corneal release incision surgery and improves the convenience of corneal limbal release incision surgery. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0025] Figure 1 This is an axonometric view of the corneal release aid provided in Embodiment 1 of the present invention;

[0026] Figure 2 This is a top view of the corneal release aid provided in Embodiment 1 of the present invention;

[0027] Figure 3 This is an exploded view of the corneal release aid provided in Embodiment 1 of the present invention;

[0028] Figure 4 This is a schematic diagram of the structure of the fastener provided in an embodiment of the present invention;

[0029] Figure 5 A top view of the fastener provided in an embodiment of the present invention;

[0030] Figure 6 This is a schematic diagram of the structure of the movable component provided in an embodiment of the present invention;

[0031] Figure 7 This is an axonometric view of the corneal release aid and the cutting blade provided in an embodiment of the present invention;

[0032] Figure 8 This is a top view of the corneal release aid and the cutting blade provided in an embodiment of the present invention;

[0033] Figure 9 This is a schematic diagram of the structure of the corneal release aid provided in Embodiment 2 of the present invention;

[0034] Figure 10 This is an exploded view of the corneal release aid provided in Embodiment 2 of the present invention.

[0035] Among them, 100 is a fixing component, 101 is a cavity, 102 is an arc-shaped opening, 103 is a first limiting stop, 104 is a first limiting part, 105 is a handle, 106 is the large diameter end, 107 is the small diameter end, 108 is a scale mark, 109 is a base, 1091 is a protrusion, 200 is a movable component, 201 is a second limiting stop, 202 is a second limiting part, and 300 is a cutting blade. Detailed Implementation

[0036] The core of this invention is to provide a corneal release aid to improve the convenience of limbal release incision surgery.

[0037] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0038] like Figures 1 to 3As shown, this embodiment of the invention discloses a corneal relaxation aid, including a fixing component 100 and a movable component 200. It should be noted that in the prior art, astigmatism correction typically uses limbal relaxation incision (LRI), a procedure with lower costs and easier patient acceptance. LRI uses a fixed-depth cutting tool (such as the corneal relaxation knife from Mani, Japan) to make an arc-shaped incision at the limbus corresponding to the steep axis of the cornea, thereby releasing local corneal tension and changing the corneal shape to correct astigmatism. However, during LRI surgery, the smoothness and length of the incision arc are difficult to control, making the LRI procedure relatively difficult. The corneal release aid provided by this invention uses a cutting blade 300 to release the cornea along the edge of the small-diameter end 107 of the fixation member 100, ensuring the smoothness of the incision. At the same time, the cutting blade 300 is limited by the first limiting stop 103 and the second limiting stop 201 set on the fixation member 100, ensuring the length of the incision. This reduces the difficulty of corneal release incision surgery and improves the convenience of limbal release incision surgery.

[0039] like Figure 4 and Figure 8 As shown, the fixing member 100 has a cavity 101 for the cutting blade 300 to operate in. In this embodiment, the fixing member 100 adopts a cup structure, wherein the fixing member 100 includes a large-diameter end 106 and a small-diameter end 107. The small-diameter end 107 of the fixing member 100 is attached to the surface of the eyeball and corresponds to the corneal limbus of the eyeball, so that the cutting blade 300 performs a release operation on the cornea along the edge of the small-diameter end 107 of the fixing member 100, thereby ensuring the smoothness of the incision. At the same time, a first limiting stop 103 is provided on the side wall of the fixing member 100 to limit the displacement of the first side of the cutting blade 300.

[0040] Furthermore, such as Figure 6 and Figure 7As shown, the movable member 200 is movably disposed within the cavity 101 of the fixed member 100, and a second limiting stop 201 is provided on the movable member 200 to limit the displacement of the second side of the cutting blade 300. When the cutting blade 300 operates along the edge of the small-diameter end 107 of the fixed member 100, the first limiting stop 103 and the second limiting stop 201 respectively limit the first side and the second side of the cutting blade 300, thereby controlling the arc length of the incision. Specifically, the movable member 200 can be placed within the cavity 101 of the fixed member 100 according to the preset arc length of the incision, so that when the cutting blade 300 moves from the first limiting stop 103 to the second limiting stop 201, the arc length of the incision reaches the preset arc length, thereby ensuring that the arc length of the incision is controlled, reducing the operational difficulty of the limbal release incision surgery, and improving the convenience of the limbal release incision surgery. It should be noted that the preset arc length is set in advance by the operator according to the actual surgical needs.

[0041] The corneal release aid provided by the present invention includes a fixing member 100, with the small-diameter end 107 of the fixing member 100 attached to the surface of the eyeball and corresponding to the corneal limbus. A first limiting stop 103 is provided on the side wall of the fixing member 100, and a movable member 200 is provided inside the cavity 101 of the fixing member 100, with a second limiting stop 201 provided on the movable member 200. When the cutting blade 300 is used to release the cornea along the edge of the small-diameter end 107 of the fixing member 100, the first limiting stop 103 and the second limiting stop 201 limit the cutting blade 300 to control the incision length.

[0042] Compared with the prior art, the corneal release aid provided by the present invention releases the cornea by using a cutting blade 300 along the edge of the small diameter end 107 of the fixation member 100, ensuring the smoothness of the incision. At the same time, the cutting blade 300 is limited by the first limiting stop 103 and the second limiting stop 201 set on the fixation member 100, ensuring the length of the incision. This reduces the difficulty of corneal release incision surgery and improves the convenience of limbal release incision surgery.

[0043] like Figure 2As shown, in one specific embodiment, the movable member 200 is attached to the side wall of the fixed member 100 and is coaxially arranged with the fixed member 100. The movable member 200 can rotate circumferentially along the fixed member 100. When the movable member 200 is placed within the cavity 101 of the fixed member 100 according to the preset arc length of the cut, relative rotation between the movable member 200 and the fixed member 100 is restricted by a limiting component. Specifically, the limiting component includes a first limiting part 104 and a second limiting part 202. The first limiting part 104 is disposed on the fixed member 100, and the second limiting part 202 is disposed on the movable member 200. The first limiting part 104 and the second limiting part 202 cooperate to restrict relative rotation between the movable member 200 and the fixed member 100.

[0044] Furthermore, such as Figures 3 to 5 As shown, in one specific embodiment, as Figure 4 As shown, the first limiting part 104 consists of multiple grooves arranged circumferentially along the large-diameter end 106 of the fixing member 100, and the second limiting part 202 is an insertion part that mates with the grooves. In this embodiment, according to the accuracy requirements, 72 grooves are evenly arranged on the large-diameter end 106 of the fixing member 100, that is, one groove is opened every 5° to meet the requirements of different cut arc lengths. When the cut arc length is determined, the insertion part of the movable member 200 is inserted into the groove to lock the relative rotation between the movable member 200 and the fixing member 100. Of course, the first limiting part 104 can also be a plurality of plug-in parts arranged circumferentially along the large diameter end 106 of the fixing member 100, and the second limiting part 202 is a groove that mates with the plug-in part. In this case, according to the accuracy requirements, 72 plug-in parts can be evenly arranged on the large diameter end 106 of the fixing member 100, that is, one plug-in part is arranged every 5°. After the arc length of the cut is determined, the groove of the movable member 200 is inserted into the plug-in part of the fixing member 100 to lock the relative rotation between the movable member 200 and the fixing member 100.

[0045] Of course, limiting the relative rotation between the movable member 200 and the fixed member 100 is not limited to the locking method in the above embodiments. In another specific embodiment, the first limiting part 104 is a strip-shaped band provided on the side wall of the fixed member 100. And / or, the second limiting part 202 is a strip-shaped band provided on the side wall of the movable member 200. The relative rotation between the movable member 200 and the fixed member 200 is limited by the frictional force between the fixed member 100 and the movable member 200. It should be noted that the movable member 200 and the fixed member 100 can also be made of materials with high friction, thereby utilizing the frictional force between the movable member 200 and the fixed member 100 to limit the relative rotation between the movable member 200 and the fixed member 100.

[0046] Furthermore, such as Figure 3As shown, in one specific embodiment, the side wall of the fixing member 100 has an arc-shaped opening 102, and the movable member 200 includes a side wall for adjusting the size of the arc-shaped opening 102. The first limiting stop 103 is a first limiting baffle disposed on the side of the arc-shaped opening 102, and the second limiting stop 201 is a second limiting baffle disposed on the side wall of the movable member 200. Specifically, there are two arc-shaped openings 102, which are symmetrically opened on the side wall of the fixing member 100. In this embodiment, the arc-shaped openings 102 are of the same width, and the arc length of the arc-shaped openings 102 is approximately 120°, so as to achieve the light transmission effect during the operation and reduce the interference after optical refraction during the operation. A first limiting baffle is provided on the side of each of the two arc-shaped openings 102, such as... Figure 4 As shown, correspondingly, a second limiting baffle is provided at the position corresponding to the arc-shaped opening 102 on the side wall of the movable part 200, such as... Figure 6 As shown. Meanwhile, as Figure 4 As shown, the inner walls of the large-diameter end 106 and the small-diameter end 107 of the fixation member 100 are respectively provided with scale markings 108. The scale markings 108 on the inner wall of the small-diameter end 107 of the fixation member 100 correspond to the reference marking lines on the surface of the eyeball. These reference marking lines can be horizontal marking points used for preoperative slit-lamp microscopy under seated positioning. The scale markings 108 on the inner wall of the large-diameter end 106 of the fixation member 100 are used to indicate the relative rotation angle between the movable part 200 and the fixation member 100, facilitating the operator's adjustment of the incision arc length. The scale markings 108 on the inner wall of the small-diameter end 107 are intervals set along the circumferential direction of the inner wall of the small-diameter end 107, with the smallest scale being 5° or 10°. Figure 4 (For illustration only) The markings can be set according to the markings on the surface of the eyeball. The scale markings 108 on the inner wall of the large diameter end 106 are intervals set along the circumferential direction of the inner wall of the large diameter end 106, with the smallest scale being 5°. Figure 4 (For illustration only). It should be noted that the cutting arc length is generally based on 5°, and is accumulated in increments of 5° to 10°, 15°, 20°, etc. Therefore, the smallest scale on the inner wall of the large diameter end 106 is 5°. However, when "measuring" the width of the handle of the cutting blade 300, the smallest scale can be set to 1° for greater accuracy.

[0047] In one specific embodiment, the opening and closing angles of the first and second limiting baffles are first adjusted according to the preset arc length of the incision in the limbal release incision surgery (60° as shown in the figure), and the fixing member 100 and the movable member 200 are locked. During the operation, the corneal release aid is placed on the surface of the eyeball according to the pre-cut axis. A cutting blade 300 (corneal release blade) with a fixed depth is used to cut into the cornea close to the limiting baffle on one side and the inner wall of the corneal release aid. The cutting blade 300 (corneal release blade) is moved along the small diameter edge of the fixing member 100 to reach the limiting baffle on the other side, thereby completing an arc-shaped incision. Similarly, the opposite arc-shaped incisions are completed. During the incision procedure, the cup body restricts the flow of a continuous and smooth arc-shaped incision. Furthermore, the first and second limiting baffles ensure precise control over the incision length, eliminating the need for manual adjustments to the corneal limbus by the operator. Additionally, the beveled inner wall of the corneal release aid ensures that the incision is perpendicular to the corneal surface, maximizing the corrective effect of the surgery.

[0048] It should be noted that the effective cutting edge of most corneal release knives has a width that is inconsistent with the lower end of the handle. After the limiting baffle limits the handle, the actual cutting angle of the blade is less than the opening angle of the first and second limiting baffles. To ensure the effective cutting arc length, for specific corneal release knives, the baffles of the fixed cup and sliding cup can be moved outward to achieve an effective cutting angle. For similar designs of the cutting knife 300 from other manufacturers, the handle can be placed in the opening and closing gap of the limiting baffle, clamping the limiting baffle, that is, adjusting the opening and closing angle of the first and second limiting baffles to approximately 0°. The handle width is then measured according to the scale of the large diameter end 106 of the fixing member 100 at this time. When adjusting the opening and closing angle, this width is added accordingly, and the effective cutting arc length can be achieved during cutting.

[0049] Furthermore, such as Figure 1 and Figure 9 As shown, in one specific embodiment, a handle 105 is provided on the side wall of the fixation member 100 to facilitate the operator's movement and placement of the corneal release aid. Specifically, a base 109 is provided on the small-diameter end 107 of the fixation member 100. In this embodiment, the fixation member 100 and the base 109 adopt an integral structure, and multiple protrusions 1091 are provided at intervals in the circumferential direction on the base 109 to prevent relative sliding between the fixation member 100 and the surface of the eyeball during the operation, thereby affecting the correction effect.

[0050] To meet the needs of operators in different operating positions during actual surgery, such as Figure 9 and Figure 10As shown, in another specific embodiment, the base 109 and the fixing member 100 can be movably connected, and the handle 105 is disposed on the base 109. When the operator needs to change different operating positions during the operation or when the operator's operating habits are different, the position of the base 109 can be adjusted to adjust the position of the handle 105 to a suitable position for the operator. Specifically, the base 109 and the fixing member 100 can be sleeved together, and the base 109 and the fixing member 100 are interference-fitted, such as... Figure 9 As shown, the contact surfaces at the connection between the base 109 and the fixing member 100 can be provided with textures to increase friction, or with interlocking convex and concave structures. For example, protrusions can be provided on the inner wall of the base 109, while multiple grooves can be formed along the circumferential direction on the outer wall of the fixing member 100. The protrusions and grooves cooperate to achieve relative stability after connection. Of course, the base 109 and the fixing member 100 can also be connected by threads, which will not be elaborated here.

[0051] The terms "first" and "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units may include steps or units not listed, but rather steps or units not listed.

[0052] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A corneal release aid, characterized in that, include: The fixing member (100) has a cavity (101) for the cutting blade (300) to operate. The fixing member (100) includes a large-diameter end (106) and a small-diameter end (107). The small-diameter end (107) of the fixing member (100) is used to attach to the surface of the eyeball and corresponds to the corneal limbus of the eyeball, so that the cutting blade (300) can perform a release operation on the cornea along the edge of the small-diameter end (107) of the fixing member (100). A first limiting stop (103) is provided on the side wall of the fixing member (100). The movable part (200) is movably disposed in the cavity (101) of the fixed part (100). The movable part (200) is provided with a second limiting stop (201). When the cutting blade (300) operates along the edge of the small diameter end (107) of the fixed part (100), the first limiting stop (103) and the second limiting stop (201) limit the cutting blade (300). The inner walls of the large-diameter end (106) and the small-diameter end (107) of the fixing member (100) are respectively provided with scale markings (108). The scale markings (108) on the inner wall of the small-diameter end (107) of the fixing member (100) are used to correspond to the reference marking line on the surface of the eyeball. The scale markings (108) on the inner wall of the large-diameter end (106) of the fixing member (100) are used to indicate the relative rotation angle between the movable member (200) and the fixing member (100). The movable part (200) is attached to the side wall of the fixed part (100) and is coaxially arranged with the fixed part (100). The movable part (200) rotates around the fixed part (100). The side wall of the fixing member (100) is provided with an arc-shaped opening (102), and the movable member (200) includes a side wall for adjusting the size of the arc-shaped opening (102). The first limiting stop (103) is a first limiting baffle provided on the side of the arc-shaped opening (102), and the second limiting stop (201) is a second limiting baffle provided on the side wall of the movable member (200).

2. The corneal release aid according to claim 1, characterized in that, The relative rotation between the movable part (200) and the fixed part (100) is restricted by a limiting component. The limiting component includes a first limiting part (104) and a second limiting part (202). The first limiting part (104) is disposed on the fixed part (100), and the second limiting part (202) is disposed on the movable part (200). The first limiting part (104) and the second limiting part (202) cooperate to restrict the relative rotation between the movable part (200) and the fixed part (100).

3. The corneal release aid according to claim 2, characterized in that, The first limiting part (104) is a plurality of grooves arranged circumferentially along the large-diameter end (106) of the fixing member (100), and the second limiting part (202) is an insertion part that mates with the grooves; or, The first limiting part (104) is a plurality of plug-in parts arranged circumferentially along the large diameter end (106) of the fixing member (100), and the second limiting part (202) is a groove that mates with the plug-in parts.

4. The corneal release aid according to claim 2, characterized in that, The first limiting part (104) is a strip-shaped band disposed on the side wall of the fixing member (100); and / or, The second limiting part (202) is a strip-shaped band provided on the side wall of the movable part (200).

5. The corneal release aid according to any one of claims 1-4, characterized in that, A handle (105) is provided on the side wall of the fastener (100).

6. The corneal release aid according to claim 5, characterized in that, The small-diameter end (107) of the fixing member (100) is provided with a base (109), and the base (109) is provided with a plurality of protrusions (1091) spaced apart in the circumferential direction to prevent the fixing member (100) from sliding relative to the surface of the eyeball.

7. The corneal release aid according to claim 6, characterized in that, The base (109) and the fixing member (100) are movably connected, and the handle (105) is disposed on the base (109); or, The base (109) and the fastener (100) are an integral structure.

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