CN220801221U - Separator - Google Patents

Abstract

The utility model discloses a separator which is used for separating an incision from a matrix lens in full femtosecond laser operation. The separator comprises a handle, a notch separating hook and a lens separating shovel which are arranged at two opposite axial ends of the handle; the notch separating hook comprises a first connecting rod and a first working part arranged on the first connecting rod, and the first connecting rod is connected with one end of the handle; the first working part is provided with a first bending part and a second bending part which are continuously bent, and the first bending part and the second bending part form a three-dimensional hook-shaped structure. In the utility model, the first working part on the incision separating hook adopts a continuous bending structure to form the first bending part and the second bending part which are mutually matched, so that the sight is not blocked when the incision separating hook is used, the accurate and flexible operation is convenient, and the risk of surgical complications is reduced.

Description

Separator

Technical Field

The utility model belongs to the technical field of medical appliances, and particularly relates to a separator for separating an incision from a matrix lens in full femtosecond laser operation.

Background

The full femtosecond laser is to cut an interface (bottom surface of a lens) with a specific diameter and a bending surface at a relatively deep layer of a cornea completely by using a femtosecond laser system in the treatment process, cut an interface (top surface of the lens) with a specific bending degree with a slightly larger diameter at a relatively shallow cornea layer after the completion, intersect the peripheries of the two interfaces, form a convex lens-shaped cornea lamellar tissue in an interlayer, then separate the edge incision and the top surface and the ground surface of the cornea lens with the aid of a surgical instrument, and finally take out the lens by using a lens forceps.

Most of currently used edge incision separators and corneal lens interlayer separators are two types of equipment, so that the economic consumption and the difficulty of instrument nursing are increased; in the prior art, although there are integrated designs, such as chinese patent document CN211633876U and chinese patent document CN208405072U, which disclose separators for separating the slit and the matrix lens, there are still the following drawbacks:

(1) The folded tip of the incision separating hook and the straight rod end are positioned in the same plane structure, so that the instrument is easy to block the sight line when being used for operation in actual use, and the operation is inconvenient; the radian and length of the separator are not designed well, so that the flexibility of use is poor;

(2) The cross section of the lens separator is in a flat oval shape, the area is large, the stress is uneven, the cornea stroma lens is easily broken in the process of separating the lens, and complications such as lens residue and the like appear;

(3) The handle is provided with anti-slip features which, however, increase unnecessary resistance due to the presence of the anti-slip features when the hand-held instrument is operated.

Overall, the separator structures of the prior art are not easy to handle, increasing the risk of surgical complications; accordingly, improvements in the art are needed.

Disclosure of utility model

The main object of the present utility model is to provide a separator for better separation of incision and matrix lens for use in all-femtosecond laser surgery.

In order to achieve the above-mentioned main object, the present utility model provides a separator for separating an incision and a matrix lens in an all-femtosecond laser operation, the separator comprising a handle, and an incision separating hook and a lens separating spade provided at opposite ends of the handle in an axial direction; the notch separating hook comprises a first connecting rod and a first working part arranged on the first connecting rod, and the first connecting rod is connected with one end of the handle; the first working part is provided with a first bending part and a second bending part which are continuously bent, and the first bending part and the second bending part form a three-dimensional hook-shaped structure.

According to one embodiment of the utility model, the first bending part is rod-shaped, and the included angle between the first bending part and the axis of the handle is not more than 45 degrees.

According to one embodiment of the present utility model, the second bending portion is in a rod shape, and the second bending portion is perpendicular to the first bending portion.

According to one embodiment of the utility model, the maximum length of the first bending portion is 4mm, and the maximum length of the second bending portion is 2.5mm.

According to one embodiment of the present utility model, the length of the first bending portion is greater than the length of the second bending portion.

According to one embodiment of the utility model, the lens separating shovel comprises a second connecting rod and a second working part arranged on the second connecting rod, and the second connecting rod is connected with the other end of the handle.

According to a specific embodiment of the utility model, the cross section of the second working part is circular; the cross section diameter of the second working part gradually decreases along the extending direction far away from the second connecting rod to form a pointed structure; wherein the end cross-sectional diameter of the second working portion is 0.6mm to 1.0mm.

According to a specific embodiment of the utility model, the second working portion has a radius of curvature of 8.43mm to 9.90mm and a length of 7.5mm to 8.0mm.

According to one embodiment of the utility model, the separator is a stainless steel separator, and the handle, the incision separating hook and the lens separating shovel are integrally formed.

The utility model has the following beneficial effects:

In the utility model, the first working part on the incision separating hook adopts a continuous bending structure to form the first bending part and the second bending part which are mutually matched, so that the sight is not blocked when the incision separating hook is used, the accurate and flexible operation is convenient, and the risk of surgical complications is reduced.

In the utility model, the second working part on the lens separator adopts an arc-shaped structure, and the cross section of the second working part is circular; along keeping away from the extending direction of second connecting rod, the cross section diameter of second working portion reduces gradually in order to form cusp structure, has the advantage that the area is little, the atress homogeneity is good, effectively avoids the fracture phenomenon that protection cornea matrix lens probably appears in the separation lens in-process, reduces the possibility of appearing complications such as lens residue.

The present utility model will be described in further detail with reference to the accompanying drawings.

Drawings

FIG. 1 is a perspective view of the separator of embodiment 1 of the present utility model;

FIG. 2 is an enlarged view of a notched separating hook in embodiment 1 of the separator of the present utility model;

FIG. 3 is an enlarged view of the lens separation blade of separator embodiment 1 of the present utility model;

FIG. 4 is a schematic view of the cut-out separation hook crown -like surface of separator embodiment 1 of the present utility model;

fig. 5 is a schematic view of the sagittal plane of the incision separating hook in embodiment 1 of the separator of the present utility model.

Detailed Description

In order that the above-recited objects, features and advantages of the present utility model will be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, without conflict, the embodiments of the present utility model and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced in other ways than those described herein, and therefore the scope of the present utility model is not limited to the specific embodiments disclosed below.

Example 1

Embodiment 1 provides a separator for separating an incision and a matrix lens in an all-femtosecond laser operation, as shown in fig. 1, the separator includes a handle 10, and an incision separating hook 20 and a lens separating spade 30 provided at opposite ends of the handle 10 in an axial direction; specifically, the separator is a stainless steel separator, and the handle 10, the slit separating hook 20, and the lens separating spade 30 are integrally formed.

With continued reference to fig. 1, the handle 10 is preferably smooth and does not present unnecessary resistance when held in hand to avoid interference with operation.

As shown in fig. 2 and 4-5, the incision separating hook 20 includes a first connection rod 21 and a first working portion 22 provided on the first connection rod 21, the first connection rod 21 being connected to one end of the handle 10; wherein the length of the first connecting rod 21 is for example between 20mm and 25mm, in particular for example 23mm; the first working portion 22 has a first bending portion 221 and a second bending portion 222 which are continuously bent, and the first bending portion 221 and the second bending portion 222 form a three-dimensional hook structure;

Further, the first bending portion 221 has a rod shape, and an included angle a1 between the first bending portion 221 and the axis of the handle 10 is not more than 45 °, for example, 30 °; the second bending portion 222 is also in a rod shape, and as shown in fig. 2, the second bending portion 222 is preferably perpendicular to the first bending portion 221.

Preferably, the length of the first bending part 221 is greater than the length of the second bending part 222. Specifically, the maximum length of the first bending portion 221 is preferably 4mm, for example, the projection length L2 of the first bending portion 221 below the coronal plane shown in fig. 4 is 3mm; correspondingly, the maximum length of the second bending portion 222 is 2.5mm, and the projection length L3 of the first bending portion 221 below the coronal plane shown in fig. 4 is 1.5mm, for example.

As shown in fig. 3, the lens separating shovel 30 includes a second connection bar 31 and a second working portion 32 provided on the second connection bar 31, the second connection bar 31 being connected to the other end of the handle 10; the length L4 of the second connecting rod 31 is preferably 15mm to 20mm.

Further, the second working portion 32 is preferably circular or elliptical arc shaped to form a flattened oval shape, with a curvature value approximating the corneal curvature; an included angle a2 of 90-110 degrees exists at the tangent line of the connection part of the second connecting rod 31 and the second working part 32 so as to form transitional connection; accordingly, the radius of curvature of the second working portion 32 is 8.43mm (converted to 40D) to 9.90mm (converted to 34.00D), and the length of the second working portion 32 is 7.5mm to 8.0mm.

With continued reference to fig. 3, the cross-section of the second working portion 32 is circular, and in the extending direction away from the second connecting rod 31, as indicated by arrow B in fig. 3, the cross-section diameter of the second working portion 32 gradually decreases to form a pointed structure, which is formed in a blunt, non-sharp state; wherein the end cross-sectional diameter of the second working portion 32 is 0.6mm to 1.0mm.

In this embodiment, the first working portion 22 on the incision separating hook 20 adopts a continuous bending structure to form a first bending portion 221 and a second bending portion 222 which are mutually matched, so that the sight is not blocked during use, the accurate and flexible operation is facilitated, and the risk of surgical complications is reduced; the second working part 32 on the lens separator adopts an arc-shaped structure, and the cross section of the second working part 32 is circular; along the extending direction away from the second connecting rod 31, the cross section diameter of the second working portion 32 gradually decreases to form a pointed structure, which has the advantages of small area and good stress uniformity, effectively avoids the possible cracking phenomenon of the protective cornea matrix lens in the process of separating the lens, and reduces the possibility of complications such as lens residues.

While the utility model has been described in terms of preferred embodiments, it is not intended to limit the scope of the utility model. It is intended that all modifications within the scope of the utility model, i.e., all equivalents thereof, be embraced by the utility model as they come within their scope without departing from the utility model.

Claims (8)

1. A separator for separating an incision and a matrix lens in a full femtosecond laser operation, the separator comprising a handle, and an incision separating hook and a lens separating spade provided at opposite axial ends of the handle; the method is characterized in that: the notch separating hook comprises a first connecting rod and a first working part arranged on the first connecting rod, and the first connecting rod is connected with one end of the handle; the first working part is provided with a first bending part and a second bending part which are continuously bent, and the first bending part and the second bending part form a three-dimensional hook-shaped structure; the lens separation shovel comprises a second connecting rod and a second working part arranged on the second connecting rod, and the second connecting rod is connected with the other end of the handle; the second working part is arc-shaped or elliptic arc-shaped, and an included angle of 90 degrees to 110 degrees exists at a tangent line at the joint of the second connecting rod and the second working part.

2. The separator of claim 1, wherein: the first bending part is in a rod shape, and an included angle between the first bending part and the axis of the handle is not more than 45 degrees.

3. A separator as claimed in claim 2, wherein: the second bending part is in a rod shape, and the second bending part is perpendicular to the first bending part.

4. A separator as claimed in claim 3, wherein: the maximum length of the first bending part is 4mm, and the maximum length of the second bending part is 2.5mm.

5. The separator of claim 4, wherein: the length of the first bending part is greater than that of the second bending part.

6. The separator of claim 1, wherein: the second working portion has a radius of curvature of 8.43mm to 9.90mm and a length of 7.5mm to 8.0mm.

7. The separator of claim 1, wherein: the cross section of the second working part is circular; the cross-sectional diameter of the second working portion gradually decreases along the extending direction away from the second connecting rod to form a pointed structure; wherein the end cross-sectional diameter of the second working portion is 0.6mm to 1.0mm.

8. The separator of claim 1, wherein: the separator is a stainless steel separator, and the handle, the notch separating hook and the lens separating shovel are integrally formed.