CN210728012U

CN210728012U - Device for removing epithelial cells at equator of crystalline lens

Info

Publication number: CN210728012U
Application number: CN201921557400.7U
Authority: CN
Inventors: 赵阳; 杨珂
Original assignee: Beijing Airen Ophthalmic Outpatient Department Co ltd
Current assignee: Beijing Airen Ophthalmic Outpatient Department Co ltd
Priority date: 2019-09-18
Filing date: 2019-09-18
Publication date: 2020-06-12
Anticipated expiration: 2029-09-18

Abstract

The utility model discloses a clear away device of lens equator portion epithelial cell, including handheld pole and connect in the connecting rod of handheld pole one end, the terminal bending type of connecting rod becomes the working lever, is connected with the polished rod on being close to the lateral wall of tip on the top surface of working lever, and the tip shaping of working lever and polished rod is the cambered surface, and the position that is close to the tip on the top surface of polished rod is equipped with the round blunt from cambered surface transition to polished rod top surface. The utility model discloses can carry out the polishing of anterior capsule membrane on high-efficient way under the state of not taking out the crystalline of the capsulorhexis just accomplishing, need not use the viscoelastic agent in the polishing process, avoid high intraocular pressure complication, can also solve the problem that the femto second tears the leather and the bag mouth closely adhere behind the bag, can also be relatively easy to accomplish anterior capsule membrane polishing operation to little pupil operation, can avoid forming bowl form leather shell in the phacoemulsification process, reduce the cracked risk of posterior capsule membrane; simultaneously the front end possesses the flexible extension rod that can stretch into the equator portion and polish, realizes the polishing to the equator portion.

Description

Device for removing epithelial cells at equator of crystalline lens

Technical Field

The utility model relates to the field of ophthalmic medical equipment, concretely relates to clear away device of lens equator portion epithelial cell.

Background

With the wide development of the modern cataract ultrasonic emulsification technology and the femtosecond laser assisted cataract surgery technology, the after cataract becomes an important factor influencing the postoperative vision of patients. It should be noted that almost all lens capsule membranes after cataract extraction have different degrees of proliferation, migration and fibrosis of residual lens epithelial cells, and the removal of residual lens epithelial cells has been a research focus of great concern for cataract doctors for the past decades. Various adverse events after cataract surgery, such as capsular bag shrinkage, intraocular lens postoperative deviation, after cataract, etc., are associated with proliferation, migration, and fibrosis of residual lens epithelial cells. Although doctors will use various methods to remove lens epithelial cells as much as possible in clinic, and prevent after cataract and capsular bag shrinkage, such as improving surgical skill, polishing front and back capsular membranes, and improving the design and material of intraocular lens, etc., after cataract and capsular bag shrinkage still have a high incidence rate, especially in children patients, after cataract and capsular bag shrinkage still have a high incidence rate of 100%, in patients with loose suspensory ligaments, such as patients with ultra-high myopia and closed angle glaucoma, after cataract, capsular bag shrinkage has a high incidence rate, which can cause many problems such as pupil occlusion, intraocular lens deviation, and myopia deviation. In addition, it also limits the development of biomimetic refractive intraocular lenses. Therefore, in cataract surgery, it is of great clinical importance to eliminate as many lens epithelial cells as possible.

In the prior cataract surgery, the method for physically removing lens epithelial cells is to remove lens nucleus and complete lens cortex removal, fill a capsular bag with viscoelastic, extend a polisher into the capsular bag to scratch the inner surface of the capsular bag so as to remove residual epithelial cells in the capsular bag, including polishing of the anterior capsular bag and the posterior capsular bag, but the prior art cannot remove the epithelial cells in the equatorial region. There are several common problems with existing polishing methods:

1. after the lens is removed, the lens capsule is soft and flutter, so that a doctor cannot easily operate the capsule during polishing, and the efficiency is generally low; 2. although the capsular sac can be ensured to be filled and expanded by injecting a large amount of viscoelastic agent into the capsular sac during the polishing process, the viscoelastic agent is sucked out after the polishing process, so that the operation steps and the duration are increased, and complications such as high intraocular pressure and the like are easily caused due to incomplete suction of the viscoelastic agent; 3. the capsular sac at the equator of the lens is a germinal region of epithelial cells of the lens and is also the part with the most dense epithelial cell residues, but the equator of the lens cannot be observed in the operation because the equator of the lens is positioned behind the iris, and a doctor cannot polish the equator under the current prior art; 4. under the small pupil operation, the polishing of the front and back capsule membranes increases the difficulty due to the reduction of the visual range, and even has the serious risk of the capsule membrane rupture; 5. the femtosecond laser is frequently used for assisting in modern refractive cataract surgery to realize accurate anterior capsular opening manufacturing, but the lower cortex can be cut off together when the anterior capsular membrane is cut in the femtosecond surgery, and the incision is neat, so that a doctor inevitably needs to attract the anterior capsular membrane when removing the cortex by negative pressure attraction, and the traction on the suspensory ligament is increased.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model provides a device for removing epithelial cells at the equator part of the crystalline lens, which comprises the following specific scheme:

including handheld pole and connect in the connecting rod of handheld pole one end, the terminal bending type of connecting rod becomes the work lever, be connected with polished rod on the lateral wall that is close to the tip on the top surface of work lever, the work lever with the tip shaping of polished rod is the cambered surface, the position that is close to the tip on the top surface of polished rod is equipped with from the cambered surface passes through to the blunt of polished rod top surface.

Furthermore, the bottom surface of the connecting part of the working rod and the polishing rod is shaped into an arc, the width of the cross section of the connecting part of the working rod and the polishing rod is 0.2mm-2mm, and the height of the cross section of the connecting part of the working rod and the polishing rod is 0.1mm-2 mm.

Further, the length of the polishing rod is 0.5mm-4 mm.

Further, the sum of the heights of the sections of the polished rod, the working rod and the round blunt is 0.1mm-2 mm.

Further, the width of the section of the connecting part of the working rod and the polishing rod is 0.3mm, and the height of the section of the connecting part of the working rod and the polishing rod is 0.3 mm; the length of the polishing rod is 1 mm; the sum of the heights of the sections of the polished rod, the working rod and the round and blunt rod is 0.3 mm.

Further, the cross section of the polishing rod is triangular.

Further, the cross section of the polishing rod is in a sawtooth shape.

Further, the section of the polishing rod is trapezoidal, and the top surface of the polishing rod is formed into a rough surface.

Further, the cross section of the polishing rod is of an arc shape, and the top surface of the polishing rod is formed into a rough surface.

Further, the tail end of the working rod or the polished rod is connected with an axially arranged extension rod, the extension rod is made of a flexible material and can move on a horizontal plane along with the polished rod, the extension rod can be bent in the vertical plane direction, and the top surface of the extension rod is formed into a rough surface.

The beneficial effects of the utility model reside in that:

1. the device for removing the epithelial cells at the equator part of the crystalline lens provided by the utility model can polish the anterior capsule when the capsulorhexis is just finished and the crystalline lens is not taken out, and the free crystalline lens epithelial cells and the anterior capsule-the capsule is in a tight state at the moment, so that the polishing efficiency is high; 2. viscoelastic agent is not needed in the polishing process, and compared with the prior polishing technology, the intraocular hypertension complication caused by incomplete viscoelastic agent removal can be effectively avoided while the operation time is reduced; 3. the lens cortex and epithelial cells are fully polished and separated from the capsular sac, so that the subsequent ultrasonic emulsification operation can be obviously simplified, the bowl-shaped cortical shell is prevented from being formed, and the risk of rupture of the posterior capsular sac, which is the most serious complication in cataract surgery, is greatly reduced; 4. the problem that the cortex is tightly adhered to the capsule opening after the capsule is torn in a femtosecond way can be solved, and the front capsule polishing operation can be easily completed for small pupil surgery; 5. the extension soft rod can be inserted into the equator of the lens, and directly scratches the capsular sac of the equator of the lens along with the horizontal swinging of the polishing rod, so that epithelial cells at the equator are dissociated in the capsular sac, the capsular sac is not damaged, and the safe removal of the epithelial cells at the equator of the lens is realized.

Drawings

FIG. 1 is a schematic structural diagram of embodiment 1 of the present invention,

FIG. 2 is an enlarged view of the structure at A in FIG. 1,

FIG. 3 is an enlarged view of the end face of the connecting rod and the working rod according to embodiment 1 of the present invention (the left view in FIG. 2),

fig. 4, a schematic view of a conventional cutting pocket,

FIG. 5 is a schematic view of cutting a pocket opening using a femtosecond laser,

FIG. 6 is a schematic view of the working state of the working rod according to embodiment 1 of the present invention,

FIG. 7 is an enlarged view of the connecting end surface of the connecting rod and the working rod according to embodiment 2 of the present invention,

FIG. 8 is an enlarged view of the connecting rod and the working rod according to example 3 of the present invention,

FIG. 9 is an enlarged view of the connecting rod and the working rod according to example 4 of the present invention,

FIG. 10 is an enlarged view showing the connection between an extension rod and a polishing rod according to example 5 of the present invention,

fig. 11 is a schematic structural view of an embodiment of an extension rod according to the present invention in example 5.

Figure number and name: 1. the device comprises a handheld rod, 2 a connecting rod, 3 a working rod, 4 a polished rod, 5 a round blunt rod, 6 an extension rod, 7 a leather body, 8 a front sac membrane, 9 a support rib.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples, which are provided only for explaining the present invention and are not intended to limit the scope of the present invention.

Example 1

Referring to fig. 1 and 2, a front capsular sac polisher comprises a handheld rod 1 and a connecting rod 2 connected to one end of the handheld rod 1, wherein the tail end of the connecting rod 2 is bent to form a working rod 3, a polishing rod 4 is connected to the side wall, close to the end, of the top surface of the working rod 3, and the end portions of the working rod 3 and the polishing rod 4 are formed into arc surfaces so as to conveniently extend into a sac opening; the position on the top surface of the polishing rod 4 close to the end part is provided with a round blunt 5 which is transited from the arc surface to the top surface of the polishing rod 4, so that the end part of the polishing rod is prevented from breaking the front capsule in the polishing process.

As shown in figure 3, the bottom surface of the connecting part of the working rod 3 and the polishing rod 4 is shaped into an arc, the section of the polishing rod 4 is an isosceles triangle, the edge of the top surface of the polishing rod forms a polishing edge surface, and the cortex on the inner side of the anterior capsular sac is removed by the force vertical to the polishing rod. Referring to fig. 2 and 3, the width a of the cross section of the connecting portion of the working rod 3 and the polishing rod 4 is 0.3mm, the length b of the polishing rod 4 is 2mm, and the sum c of the heights of the cross sections of the polishing rod 4, the working rod 3, and the round pin 5 is 0.2 mm.

The utility model discloses a preceding cyst membrane polisher can polish before the crystal excision, and preceding cyst membrane can guarantee under the supporting role of crystal that polishing in-process before this moment is that there is certain tension before the cyst membrane, need not use the production that viscoelastic agent avoided follow-up problem on the one hand, and on the other hand can make polishing process also more efficiency more smoothly. The traditional capsule membrane polisher can only polish after the crystal is removed, a large amount of viscoelastic agent is needed, the capsule membrane is soft and flutter, and the polishing efficiency is low.

In addition, as shown in fig. 4, the capsule opening cut by the femtosecond laser is adopted, due to the characteristics of the femtosecond laser, the anterior capsule 8 and the lower cortex 7 are cut together when the capsule opening is manufactured, the cut part is very neat (similar to two pieces of paper which are stacked neatly), and the negative pressure suction apparatus is difficult to ensure that the anterior capsule above is not pulled when the lower cortex is pulled out; as shown in fig. 5, the traditional manual capsulorhexis leads the edge of the anterior capsule 8 and the edge of the cortex 7 at the capsular opening to have dislocation, and the negative pressure aspirator can conveniently grasp the hair surface part of the cortex edge which exceeds the anterior capsule in the subsequent operation step to remove the hair surface part, thereby avoiding directly sucking the anterior capsule; as shown in fig. 6, the polishing device of the present invention, because of the structure of the polishing rod and the working rod, can easily insert between the anterior capsular sac and the cortex, and separate the two end faces to ensure the dislocation of the cortex and the anterior capsular sac, and the negative pressure suction device has a force application point and then can draw out the cortex below without drawing the anterior capsular sac.

Example 2

Referring to fig. 7, the present embodiment is different from embodiment 1 in that: the polished rod 4 has a saw-tooth-shaped cross section.

Compared with the embodiment 1, the sawtooth structure is actually a plurality of spliced triangles, so that a plurality of edges on the top surface of the polished rod form a plurality of edge surfaces, the polishing effect is better, and the polishing efficiency is further improved.

Example 3

Referring to fig. 8, the present embodiment is different from embodiment 1 in that: the section of the polishing rod 4 is isosceles trapezoid, and the top surface of the polishing rod 4 is formed into a rough surface.

Compared with embodiment 1, the polishing rod has a flatter overall shape in cross section, and is matched with the rough surface formed on the upper top surface, so that the polishing force is softer, and the probability of damage to the capsule is reduced.

Example 4

Referring to fig. 9, the present embodiment is different from embodiment 1 in that: the section of the polished rod 4 is arc-shaped, and the top surface of the polished rod 4 is formed into a rough surface.

Compared with embodiment 1, the polishing rod has smoother overall shape of the cross section, the top surface is formed into an arc surface matched with the front capsule, the structure of the edge of the polishing rod is eliminated, and the probability of damage to the capsule is further reduced.

Example 5

Referring to fig. 10, the present embodiment is different from embodiment 1 in that: the end connection of working rod 3 or polishing rod 4 has the extension rod 6 of axial arrangement, and extension rod 6 is made for soft material, and extension rod 6 can be along with polishing rod 4 moves on the horizontal plane, and extension rod 6 can buckle in vertical face direction, and the top surface shaping of extension rod 6 is the rough surface.

The extension rod can also be made by adopting a process of integrally forming with the working rod or the polishing rod, and the whole body is made of medical high polymer materials.

As shown in fig. 11, in one embodiment, the support rib 9 is provided in the flexible extension rod 6, the support rib 9 is formed by a plurality of short rods hinged to each other, and the short rods are hinged to each other through a horizontal shaft so that the short rods can only move in a direction perpendicular to the polishing surface; accordingly, as shown in fig. 11, the flexible extension rod wrapped around the short rod can deform only in the vertical direction to fit the equator (i.e., the upward and downward curvature of the angle of view shown in fig. 11) and cannot bend in the horizontal direction to avoid uncontrollable deformation (i.e., the inward and outward curvature of the angle of view shown in fig. 11) during polishing.

In this example, compared to example 1, a soft polishing material was attached to the tip of the polisher so that polishing could be performed deep into the equator and epithelial cells adhered to the equator could be removed effectively.

In summary, the preferred embodiments of the present invention are only examples, and the scope of the present invention is not limited thereto, and all equivalent changes and modifications made in accordance with the scope of the present invention and the contents of the specification are within the scope covered by the present invention.

Claims

1. A device for removing epithelial cells at the equator of the lens, comprising a hand-held rod (1) and a connecting rod (2) connected to one end of the hand-held rod (1), characterized in that: the tail end of the connecting rod (2) is bent to form a working rod (3), a polished rod (4) is connected to the side wall, close to the end, of the top surface of the working rod (3), the end of the working rod (3) and the polished rod (4) is formed into an arc surface, and a blunt end (5) which is transited from the arc surface to the top surface of the polished rod (4) is arranged at the position, close to the end, of the top surface of the polished rod (4).

2. A device for removing lens equatorial epithelial cells according to claim 1, wherein: the bottom surface of the connecting part of the working rod (3) and the polished rod (4) is shaped into an arc, the width of the section of the connecting part of the working rod (3) and the polished rod (4) is 0.2mm-2mm, and the height of the section of the connecting part of the working rod (3) and the polished rod (4) is 0.1mm-2 mm.

3. A device for removing lens equatorial epithelial cells according to claim 2, wherein: the length of the polished rod (4) is 0.5mm-4 mm.

4. A device for removing lens equatorial epithelial cells according to claim 3, wherein: the sum of the heights of the cross sections of the polished rod (4), the working rod (3) and the round blunt (5) is 0.1-2 mm.

5. An apparatus for removing lens equatorial epithelial cells according to claim 4, wherein: the width of the section of the connecting part of the working rod (3) and the polished rod (4) is 0.3mm, and the height of the section of the connecting part of the working rod (3) and the polished rod (4) is 0.3 mm; the length of the polished rod (4) is 1 mm; the sum of the heights of the cross sections of the polished rod (4), the working rod (3) and the round blunt (5) is 0.3 mm.

6. An apparatus for removing lens equatorial epithelial cells according to claim 5, wherein: the section of the polished rod (4) is triangular.

7. An apparatus for removing lens equatorial epithelial cells according to claim 5, wherein: the section of the polished rod (4) is in a sawtooth shape.

8. An apparatus for removing lens equatorial epithelial cells according to claim 5, wherein: the section of the polished rod (4) is trapezoidal, and the top surface of the polished rod (4) is formed into a rough surface.

9. An apparatus for removing lens equatorial epithelial cells according to claim 5, wherein: the cross section of the polished rod (4) is arc-shaped, and the top surface of the polished rod (4) is formed into a rough surface.

10. A device for removing lens equatorial epithelial cells according to claim 1, wherein: the tail end of the working rod (3) or the tail end of the polished rod (4) is connected with an axially arranged extension rod (6), the extension rod (6) is made of a flexible material, the extension rod (6) can move on the horizontal plane along with the polished rod (4), the extension rod (6) can be bent in the vertical plane direction, and the top surface of the extension rod (6) is formed into a rough surface.