CN209203730U - Corneal stroma lens are implanted into tweezer - Google Patents

Abstract

The utility model discloses a tweezer for implanting a corneal matrix lens, which comprises a straight tweezer handle, a fixed clip set inclined to the tweezer handle, and a movable clip parallel to the fixed clip; the fixed clip is fixed at the lower end of the tweezer handle , the movable clip is connected to the tweezers handle in a manner that can move along the length direction of the tweezers handle, and when the movable clip moves, the gap between the fixed clip and the movable clip changes to clamp the corneal stroma lens; the corneal lens of the utility model The stromal lens implantation tweezers, the clamping interval is formed between the parallel fixed clip and the movable clip, when the corneal stromal lens needs to be implanted, the corneal stromal lens is placed in the clamping interval, and then the movable clip is moved The gap between the fixed clip and the movable clip gradually narrows and the corneal stroma lens is clamped; due to the large contact area between the fixed clip, the movable clip and the corneal stroma lens, the clamping is firm and can avoid causing implantation. The folds of the sheet can improve the success rate of the operation.

Description

Corneal stroma lens implant forceps

technical field

The utility model relates to an auxiliary appliance for ophthalmic surgery, in particular to a corneal stroma lens implant forceps.

Background technique

The VISU MAX full femtosecond laser produced by German Zeiss Company began to be used clinically in 2008, mainly for the correction of myopia (a micro-convex lens is excised with a laser in the center of the cornea and taken out). In 2015, Zhongshan Ophthalmology Center and Beijing Tongren Ophthalmology Department innovatively implanted allogeneic corneal stroma microconvex lens (taken out by full femtosecond laser treatment of myopia) into the center of the cornea of the treated eye (full femtosecond assisted formation of pocket) to correct hyperopia, and respectively Succeeded with both monkey and human eyes. Compared with LASIK surgery, femtosecond laser-assisted corneal stromal lens implantation is more minimally invasive and less damaging for the correction of ametropia, does not reduce corneal thickness, does not affect endothelial cells, and is reversible. The key step in the implantation operation is the implantation of the corneal stromal lens. However, there is no special forceps suitable for the implantation operation in the prior art. The general-purpose forceps are not easy to operate, and it is easy to cause folds of the graft, resulting in surgical failure. .

Therefore, there is a need for a corneal stroma lens implant forceps, which facilitates the implantation operation of the corneal stroma lens, avoids causing graft folds, and improves the success rate of the operation.

Utility model content

In view of this, the purpose of this utility model is to provide a corneal stroma lens implantation forceps, which facilitates the implantation operation of the corneal stroma lens, avoids causing folds of the graft, and improves the success rate of the operation.

The tweezers for implanting corneal stroma lens of the utility model include straight tweezers handles, fixed clips inclined to the tweezers handles and movable clips parallel to the fixed clips; the fixed clips are fixed on the lower end of the tweezers handles, The movable clip is connected to the tweezers handle in a manner that can move along the length direction of the tweezers handle, and when the movable clip moves, the gap between the fixed clip and the movable clip changes to clamp the corneal stroma lens.

Through the above disclosure, the utility model has the following beneficial technical effects:

In the corneal stroma lens implant forceps of the utility model, a clamping interval is formed between the parallel fixed clip and the movable clip, and when the corneal stroma lens needs to be implanted, the corneal stroma lens is placed in the clamping interval , and then move the movable clip, the gap between the fixed clip and the movable clip gradually narrows and clamps the corneal stroma lens; due to the large contact area between the fixed clip, the movable clip and the corneal stroma lens, the clamping is firm, Moreover, it can avoid causing the folds of the implant and improve the success rate of the operation; the utility model has a simple structure and is convenient to use, fills the blank of special implant tweezers, is suitable for popularization and application, has better technical and economic effects, and has strong practicability.

As a further improvement to the above technical solution, the movable clip is fixed at the lower end of a moving base, and a guiding hole is provided on the moving base, and the tweezers handle passes through the guiding hole. With this structure, the directional movement of the movable seat can be guaranteed, and the movable clip can always be kept parallel to the fixed clip during the moving process.

As a further improvement to the above technical solution, it also includes a left spring piece and a right spring piece symmetrically arranged on the left and right sides of the tweezers handle. The tweezers handle and the lower end are connected to the mobile base. With this structure, it is convenient to control the movement of the moving seat, and it has a better reset and springback effect.

As a further improvement to the above technical solution, the fixed clip is connected to the tweezers handle through a straight first connecting plate, the movable clip is connected to the moving seat through a straight second connecting plate, and the first connecting The plate and the second connecting plate are parallel, and the angle between the fixed clip and the first connecting plate and the angle between the movable clip and the second connecting plate are the same and both are 100°-140°. By adopting this structure, the doctor can straighten the corneal matrix lens during the operation, so as to ensure the smooth progress of the operation.

As a further improvement to the above technical solution, the included angle is 120°.

As a further improvement to the above technical solution, the fixed clip and the movable clip are both rectangular sheet structures, the length of the rectangular sheet structure is 6.0-8.0mm, and the width is 1.5mm-2.5mm. With this structure, the fixed clip and the movable clip are adapted to the structure of the common corneal stroma lens, ensuring sufficient contact area between the fixed clip, the movable clip and the corneal stroma lens.

Description of drawings

Fig. 1 is the front view of the utility model;

Fig. 2 is the left side view of the utility model

Fig. 3 is an enlarged view of A in Fig. 1 .

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, based on The embodiments of the present utility model and all other embodiments obtained by persons of ordinary skill in the art without making creative efforts all belong to the scope of protection of the present utility model.

Fig. 1 is a front view of the utility model, Fig. 2 is a left view of the utility model, and Fig. 3 is an enlarged view at A in Fig. The tweezers handle 1, the fixed clip 2 that is inclined to the tweezers handle 1 and the movable clip 3 parallel to the fixed clip 2; the fixed clip 2 is fixed on the lower end of the tweezers handle 1, and the movable clip 3 is It is connected to the tweezers handle 1 in a manner that can move along the length direction of the tweezers handle 1, and when the movable clip 3 moves, the gap between the fixed clip 2 and the movable clip 3 changes to clamp the corneal stromal lens. The fixed clip 2 is parallel to the movable clip 3, and the two remain parallel during the movement of the movable clip 3, but the gap between the two changes, and the value M of this gap can be 0.4-0.6 in the initial state mm; "Up", "Down", "Left" and "Right" refer to the directions shown in Figure 2, and the length direction of the tweezers handle 1 is in the upper and lower directions in the figure. Tweezers handle 1, fixed clip 2, and movable clip 3 are all made of medical metal (such as stainless steel). In the corneal stroma lens implant forceps of the present embodiment, a clamping interval is formed between the parallel fixed clips 2 and movable clips 3, and when the corneal stroma lens needs to be implanted, the corneal stroma lens is placed in the clamping area. In the interval, move movable clip 3 then, the gap between fixed clip 2 and movable clip 3 dwindles gradually and clamps corneal stroma lens; Because the contact area of fixed clip 2, movable clip 3 and corneal stroma lens Large, its clamping is firm, and it can avoid causing folds of the graft and improve the success rate of the operation.

In the present embodiment, the movable clip 3 is fixed on the lower end of a movable seat 4, and the movable seat 4 is provided with a guide hole 4a, and the tweezers handle 1 passes through the guide hole 4a; the movable seat 4 is slidably Set on the tweezers handle 1, its sliding will drive the movable clip 3 to move; the guide hole 4a is a longitudinal through hole; the shape of the guide hole 4a is adapted to the tweezers handle 1, and can limit the rotation of the tweezers handle 1; the moving seat 4 is set on the tweezers Outside the handle 1, the directional movement of the movable seat 4 can be guaranteed, and the movable clip 3 can always be kept parallel to the fixed clip 2 during the moving process.

In this embodiment, the implant tweezers also include a left spring piece 5 and a right spring piece 6 symmetrically arranged on the left and right sides of the tweezers handle 1, and the left spring piece 5 and the right spring piece 6 are all bent outwards (that is, convex toward outside) and its upper end is connected to the tweezers handle 1, and its lower end is connected to the moving seat 4; Push the movable seat 4 to move downward, so that the movable clip 3 gradually approaches the fixed clip 2; when the pressure is released, the left spring piece 5 and the right spring piece 6 recover under their elastic force, and drive the movable seat 4 To reset, the movable clip 3 is gradually away from the fixed clip 2; the left spring 5 and the right spring 6 are all metal springs, this way is convenient to control the movement of the moving seat 4, and has a better reset return. Elastic effect; the left spring piece 5 and the right spring piece 6 can be connected by welding with the tweezers handle 1 and the moving seat 4.

In this embodiment, the fixed clip 2 is connected to the tweezers handle 1 through a straight first connecting plate 7, and the movable clip 3 is connected to the moving seat 4 through a straight second connecting plate 8. A connecting plate 7 and the second connecting plate 8 are parallel, the angle α between the fixed clip 2 and the first connecting plate 7 and the angle α between the movable clip 3 and the second connecting plate 8 are the same and both 100°-140°. The first connecting plate 7 and the second connecting plate 8 are also made of medical metal, and they are arranged parallel to the tweezers handle 1; the existence of the included angle α allows the doctor to straighten the corneal matrix lens during the operation to ensure the smooth progress of the operation; The above-mentioned angle α is preferably 120°.

In this embodiment, the fixed clip 2 and the movable clip 3 are rectangular sheet structures, the length L of the rectangular sheet structure is 6.0-8.0mm, and the width W is 1.5mm-2.5mm; the fixed clip 2 and the movable clip 3 are adapted to the common corneal stroma lens structure, ensuring that the fixed clip 2, the movable clip 3 and the corneal stroma lens have sufficient contact areas; preferably, the length L is 7.0 mm, and the width W is 2.0 mm.

What is described above is only the embodiment of the utility model, and common knowledge such as the specific structure and characteristic known in the scheme is not described too much here. It should be pointed out that for those skilled in the art, under the premise of not departing from the structure of the utility model, some deformations and improvements can also be made, and these should also be regarded as the protection scope of the utility model, and these will not affect the utility model. Effects of novel implementations and utility of patents. The scope of protection required by this application shall be based on the content of the claims, and the specific implementation methods and other records in the specification may be used to interpret the content of the claims.

Claims (6)

1. a kind of corneal stroma lens implant forceps, it is characterized in that: comprise straight tweezers handle, the fixed clip that is inclined at tweezers handle setting and the movable clip that is parallel with fixed clip; Described fixed clip is fixed on tweezers The lower end of the handle, the movable clip is connected to the tweezers handle in a manner that can move along the length direction of the tweezers handle, and when the movable clip moves, the gap between the fixed clip and the movable clip changes to hold Corneal stroma lens. 2. The corneal lens implant forceps according to claim 1, characterized in that: the movable clip is fixed on the lower end of a moving seat, the moving seat is provided with a guide hole, and the handle of the forceps passes through the guide hole . 3. corneal stromal lens implant forceps according to claim 2, is characterized in that: also comprise the left spring leaf and the right spring leaf that are symmetrically located at the left and right sides of tweezers handle, described left spring leaf and right spring leaf are both The outward curved arc structure is connected to the tweezers handle at its upper end and connected to the moving seat at its lower end. 4. The corneal lens implant forceps according to claim 2, characterized in that: the fixed clip is connected to the tweezer handle through a straight first connecting plate, and the movable clip is connected through a straight second connection plate. The plate is connected to the moving seat, the first connecting plate and the second connecting plate are parallel, the angle between the fixed clip and the first connecting plate and the angle between the movable clip and the second connecting plate are the same and equal. 100°-140°. 5. The corneal lens implant forceps according to claim 4, characterized in that: the included angle is 120°. 6. The corneal lens implant forceps according to any one of claims 1 to 5, characterized in that: the fixed clip and the movable clip are rectangular sheet structures, and the length of the rectangular sheet structures is 6.0-8.0mm, width 1.5mm-2.5mm.