Corneal contact lens fixing device

Abstract

The utility model belongs to the technical field of ophthalmologic operation medical instruments, and particularly relates to a corneal contact lens fixing device which comprises a fixing ring with an annular adjusting sliding groove formed in the peripheral side, at least two fixing side feet movably arranged in the annular adjusting sliding groove and a limiting fixing mechanism arranged between the fixing ring and the fixing side feet. One end of the fixing side foot extends into the annular adjusting sliding groove and can move in the circumferential direction of the fixing ring along the annular adjusting sliding groove, and a fixing hole is formed in the other end of the fixing side foot. The fixing holes in the fixing side feet correspond to the original through holes in the eyeball, the fixing side feet are fixed through the limiting fixing mechanism, the fixing ring side feet can be fixed to the surface of the eyeball in cooperation with sutures or surgical instruments, the eyeball does not need to be perforated again, and damage to the eyeball is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to ophthalmic operation medical instrument technical field, especially relate to a corneal contact lens fixing device.

BACKGROUND

[0002] Corneal contact lens is indispensable surgical instrument in vitreoretinal surgery, such as in vitreous cutting operation, corneal contact lens has been widely used. Using corneal contact lens must cooperate with the use of instrument on the corneal surface to fix contact lens, the corneal contact lens fixing ring is commonly used to fix contact lens currently, the fixing ring has side foot, in operation, utilize suture or surgical instrument to fix the side foot of fixing ring on the surface of eyeball, to reach the purpose of fixing contact lens, and before fixing membrane contact lens, in order to infusion operation also need to be perforated on the eyeball, and because the existing side foot fixing is on the fixing ring, it is difficult to correspond with the multiple holes that have been perforated on the eyeball, therefore, the operation of fixing contact lens needs to be perforated on the eyeball again, and the eyeball is damaged greatly.

SUMMARY

[0003] The utility model discloses a kind of corneal contact lens fixing devices, which can adjust the angle of fixed side foot, without again perforating on the eyeball, reduce the damage of eyeball.

[0004] The utility model is realized by the following technical solutions:

[0005] A kind of corneal contact lens fixing device, comprising:

[0006] Fixed ring, its outer peripheral side is equipped with annular adjusting sliding slot;

[0007] Fixed side foot, at least two fixed side feet are arranged in annular adjusting sliding slot, one end of the fixed side foot is inserted into annular adjusting sliding slot and can be moved along annular adjusting sliding slot around fixed ring circumferentially, and the other end is equipped with fixed hole;

[0008] Limiting and fixing mechanism, it is arranged between fixed ring and fixed side foot for fixing the fixed side foot, when the fixed side foot is moved along annular adjusting sliding slot around fixed ring circumferentially to the required angle, the limiting and fixing mechanism fixes the fixed side foot.

[0009] The limiting and fixing mechanism comprises a first clamping convex ring and a second clamping convex ring arranged on the outer circumferential side of the fixing ring, the first clamping convex ring, the second clamping convex ring and the fixing ring form the annular adjusting sliding groove, the distance between the first clamping convex ring and the second clamping convex ring is smaller than the thickness of the fixing side foot, when the one end of the fixing side foot extends into the annular adjusting sliding groove, the first clamping convex ring and the second clamping convex ring are elastically deformed to clamp and fix the fixing side foot, when a force along the annular adjusting sliding groove and around the fixing ring is applied to the fixing side foot, the fixing side foot can overcome the clamping force of the first clamping convex ring and the second clamping convex ring and move around the fixing ring along the annular adjusting sliding groove to adjust the angle of the fixing side foot.

[0010] The limiting and fixing mechanism further comprises;

[0011] The annular limiting sliding groove is arranged on the side of the second clamping convex ring close to the first clamping convex ring and is communicated with the annular adjusting sliding groove.

[0012] The limiting convex is arranged on the end of the fixing side foot extending into the annular adjusting sliding groove, the limiting convex is arranged in the annular limiting sliding groove and can move around the fixing ring along the annular adjusting sliding groove, and is used for limiting the fixing side foot from separating from the annular adjusting sliding groove along the radial direction.

[0013] The one end of the fixing side foot extending into the annular adjusting sliding groove is provided with an arc-shaped contact surface, and the curvature of the arc-shaped contact surface is the same as the curvature of the outer circumferential side of the fixing ring.

[0014] The fixing side foot is three.

[0015] The one end of the second clamping convex ring away from the first clamping convex ring is provided with a round corner.

[0016] The fixing ring is made of stainless steel or plastic material.

[0017] The fixing side foot is made of elastic material.

[0018] Compared with the prior art, the contact lens fixing device has the following advantages:

[0019] The utility model provides a kind of corneal contact lens fixing device, including the fixed ring with annular adjusting sliding slot being equipped in outer peripheral side, at least two fixed side feet being movably arranged in annular adjusting sliding slot, and the limiting fixing mechanism being arranged between fixed ring and fixed side foot, one end of fixed side foot enters annular adjusting sliding slot and can be circumferentially moved along annular adjusting sliding slot around fixed ring, and the other end is equipped with fixed hole, when using, fixed side foot is adjusted angle along annular adjusting sliding slot around fixed ring according to the position of original perforation of eyeball, make the fixed hole on each fixed side foot correspond with each original perforation on eyeball, and fixed side foot is fixed by limiting fixing mechanism, it can be fixed in the surface of eyeball with suture or surgical instrument, need not to be perforated to eyeball again, reduce the damage to eyeball.

DESCRIPTION OF DRAWINGS

[0020] In order to make the technical problems solved by the utility model, technical solutions and beneficial effects more clearly understood, the utility model will be further described in detail below in combination with drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0021] Figure 1 It is the structure schematic diagram of corneal contact lens fixing device in the specific embodiment of the utility model;

[0022] Figure 2 It is the exploded structure schematic diagram of corneal contact lens fixing device in the specific embodiment of the utility model;

[0023] Figure 3 It is Figure 2 The cross-sectional structure schematic diagram of corneal contact lens fixing device in the specific embodiment of the utility model.

DETAILED DESCRIPTION

[0024] In order to make the technical problems solved by the utility model, technical solutions and beneficial effects more clearly understood, the utility model will be further described in detail below in combination with drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0025] When the utility model embodiment refers to "first", "second" and other ordinal numbers, unless according to context, it expresses order, should be understood as merely for distinguishing.

[0026] In the description of the utility model, it should be explained that, unless another explicit provision and limitation, term "installation", "connection", "connect" should be broad-sense understanding, for example, can be fixed connection, can be detachable connection, or integrally connected;Can be mechanical connection, can be electrical connection;It can be directly connected, can be indirectly connected through intermediate medium, can be the intercommunication of two elements. For ordinary skilled in the art, the specific meaning of above-mentioned term in the utility model can be understood according to specific circumstances.

[0027] Specific embodiments, such as Figures 1-3 A contact lens fixing device is shown in the drawings, which comprises a fixing ring 1, an annular adjusting sliding groove 2 is arranged on the outer circumferential side of the fixing ring 1, at least two fixing side feet 3 are arranged in the annular adjusting sliding groove 2, one end of the fixing side feet 3 extends into the annular adjusting sliding groove 2 and can move circumferentially around the fixing ring 1 along the annular adjusting sliding groove 2, and the other end is provided with a fixing hole 4, a limiting and fixing mechanism 5 is arranged between the fixing ring 1 and the fixing side feet 3 for fixing the fixing side feet 3, and when the fixing side feet 3 move circumferentially around the fixing ring 1 along the annular adjusting sliding groove 2 to a desired angle, the limiting and fixing mechanism 5 fixes the fixing side feet 3. In use, the fixing side feet are adjusted in angle by moving circumferentially around the fixing ring along the annular adjusting sliding groove according to the position of the original perforation of the eyeball, the fixing holes on the fixing side feet are corresponded to the original perforations on the eyeball, and the fixing side feet are fixed by the limiting and fixing mechanism, so that the fixing ring side feet can be fixed on the surface of the eyeball by cooperating with a suture or a surgical instrument, and the eyeball does not need to be perforated again, thereby reducing the damage to the eyeball.

[0028] Optionally, the diameter of the fixing hole 4 is 0.5-0.6 mm, so as to facilitate the entry of a chop head.

[0029] Optionally, the distance from the center axis of the fixing hole 4 to the round corner (7) is 3.5 mm or 4 mm, two types, so as to meet the selection of incision position in different cases.

[0030] Specifically, the limiting and fixing mechanism 5 comprises a first clamping convex ring 51 and a second clamping convex ring 52 arranged on the outer circumferential side of the fixing ring 1, the first clamping convex ring 51, the second clamping convex ring 52 and the fixing ring 1 form the annular adjusting sliding groove 2, and the distance between the first clamping convex ring 51 and the second clamping convex ring 52 is less than the thickness of the fixing side feet 3, when one end of the fixing side feet 3 extends into the annular adjusting sliding groove 2, the first clamping convex ring 51 and the second clamping convex ring 52 elastically deform to clamp and fix the fixing side feet 3, and when a force for moving circumferentially around the fixing ring 1 along the annular adjusting sliding groove 2 is applied to the fixing side feet 3, the fixing side feet 3 can overcome the clamping force of the first clamping convex ring 51 and the second clamping convex ring 52 to move circumferentially around the fixing ring 1 along the annular adjusting sliding groove 2, so as to adjust the angle of the fixing side feet 3. The structure is reasonable and simple.

[0031] In addition, the limiting and fixing mechanism 5 further comprises an annular limiting sliding groove 53 arranged on the side of the second clamping convex ring 52 close to the first clamping convex ring 51 and communicating with the annular adjusting sliding groove 2, and a limiting protrusion 54 arranged on one end of the fixing side feet 3 extending into the annular adjusting sliding groove 2, the limiting protrusion 54 is arranged in the annular limiting sliding groove 53 and can move circumferentially around the fixing ring 1 with the fixing side feet 3, and is used for limiting the fixing side feet 3 from separating from the annular adjusting sliding groove 2 in the radial direction. The structure is compact and stable, and the fixing side feet 3 are prevented from separating.

[0032] Further, the end of the fixed side foot 3 extending into the annular adjusting slot 2 is provided with an arc-shaped contact surface 6, and the curvature of the arc-shaped contact surface 6 is the same as that of the outer circumferential surface of the fixed ring 1. The fixed side foot 3 is in contact with the outer circumferential surface of the fixed ring 1 through the arc-shaped contact surface 6, and the structure is more compact and stable.

[0033] As an optional solution of the present application, the fixed side foot 3 is three. Before fixing the corneal contact lens, three holes arranged along the circumference need to be punched on the eyeball, one of which is used to fix the infusion needle channel to maintain the intraocular pressure; one of which is used for the entry and exit of the intraocular illumination optical fiber; and one of which is used for the entry and exit of the vitreous cutting head. The present application is provided with three fixed side feet 3, and when fixing the contact lens, the angles of the three fixed side feet 3 are adjusted so that the three fixed holes 4 on the three fixed side feet 3 correspond to the three holes, respectively, without the need to punch the holes on the eyeball again, thereby reducing the damage to the eyeball.

[0034] Specifically, the fixed side foot 3 is arc-shaped to facilitate adhesion to the eyeball, and the fixed side foot 3 is a hollow structure, which is designed to form a negative pressure and improve the ability to fix the eyeball.

[0035] Further, in order to avoid sharp corners from damaging the human body, the second clamping convex ring 52 is provided with a round corner 7 at the end away from the first clamping convex ring 51.

[0036] Further, the fixed ring 1 is made of stainless steel or plastic.

[0037] Specifically, the fixed side foot 3 is made of elastic material. The radial position of the fixed hole 4 is adjusted to facilitate correspondence with the holes on the eyeball.

[0038] As described above, an embodiment is provided in combination with specific content, and it is not intended that the specific implementation of the present application is limited to these descriptions. In addition, due to different industry names, the naming is not limited to the above, and the English naming is not limited. Any method, structure, etc. similar to or similar to the present application, or any technical deduction or replacement under the concept of the present application, should be considered as the protection scope of the present application.

Claims

1. A contact lens fixation device, characterized by, The application relates to a fixing ring (1) provided with an annular adjusting sliding groove (2) on the outer periphery; at least two fixing side legs (3) are arranged in the annular adjusting sliding groove (2), one end of the fixing side legs (3) extends into the annular adjusting sliding groove (2) and can move along the annular adjusting sliding groove (2) around the fixing ring (1), and the other end is provided with a fixing hole (4); a limiting and fixing mechanism (5) is arranged between the fixing ring (1) and the fixing side legs (3) and is used for fixing the fixing side legs (3), and when the fixing side legs (3) move along the annular adjusting sliding groove (2) around the fixing ring (1) to a required angle, the limiting and fixing mechanism (5) fixes the fixing side legs (3). The limiting and fixing mechanism (5) comprises a first clamping convex ring (51) and a second clamping convex ring (52) arranged on the outer periphery of the fixing ring (1), the first clamping convex ring (51), the second clamping convex ring (52) and the fixing ring (1) form the annular adjusting sliding groove (2), the distance between the first clamping convex ring (51) and the second clamping convex ring (52) is smaller than the thickness of the fixing side legs (3), when one end of the fixing side legs (3) extends into the annular adjusting sliding groove (2), the first clamping convex ring (51) and the second clamping convex ring (52) are elastically deformed to clamp and fix the fixing side legs (3), when a force along the annular adjusting sliding groove (2) around the fixing ring (1) is applied to the fixing side legs (3), the fixing side legs (3) can move along the annular adjusting sliding groove (2) around the fixing ring (1) by overcoming the clamping force of the first clamping convex ring (51) and the second clamping convex ring (52) to adjust the angle of the fixing side legs (3). The limiting and fixing mechanism (5) further comprises an annular limiting sliding groove (53) arranged on the side of the second clamping convex ring (52) close to the first clamping convex ring (51) and connected with the annular adjusting sliding groove (2); and a limiting convex (54) arranged on one end of the fixing side legs (3) extending into the annular adjusting sliding groove (2), the limiting convex (54) is arranged in the annular limiting sliding groove (53) and can move around the fixing ring (1) with the fixing side legs (3) and is used for limiting the fixing side legs (3) from separating from the annular adjusting sliding groove (2) along the radial direction. One end of the fixing side legs (3) extending into the annular adjusting sliding groove (2) is provided with an arc-shaped contact surface (6) with the same curvature as the outer periphery of the fixing ring (1).

2. The contact lens securing device of claim 1, wherein, The fixing side legs (3) are three in number.

3. The contact lens securing device of claim 2, wherein, A round corner (7) is arranged on the end of the second clamping convex ring (52) away from the first clamping convex ring (51). The fixing ring (1) is made of stainless steel or plastic. The fixing side legs (3) are made of elastic material.

4. The contact lens securing device of claim 3, wherein, ​ 5. The contact lens securing device of claim 1, wherein, ​ 6. The contact lens securing device of claim 2, wherein, ​ 7. The contact lens securing device of claim 1, wherein ​ 8. The contact lens securing device of claim 1, wherein, ​

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