CN114041900A

CN114041900A - Basic lens structure for accurately adjusting focal length

Info

Publication number: CN114041900A
Application number: CN202111370044.XA
Authority: CN
Inventors: 程子昱
Original assignee: Zhengzhou Nishi Pharmaceutical Technology Co ltd
Current assignee: Zhengzhou Nishi Pharmaceutical Technology Co ltd
Priority date: 2021-11-18
Filing date: 2021-11-18
Publication date: 2022-02-15
Anticipated expiration: 2041-11-18
Also published as: CN114041900B

Abstract

The accommodating intraocular lens utilizes both vitreous movement and ciliary muscle contraction forces, as well as the convexity created during advancement, to achieve accommodation to ensure maximum anterior movement and adequate convexity required for clear near vision. In the prior art, the adjustment of the focal length is realized by the way that the adjusting rod is driven to pull the artificial lens body through the vitreous body movement and the contraction of ciliary muscle, the edge of the joint of the artificial lens and the adjusting rod is stressed, however, in the actual use, the edge stress is weak for the adjustment of the lens, the adjustment of a small amplitude can only be met, and the adjustment is not accurate enough. The utility model sets a transparent main stem with root hair capable of driving the lens around the artificial lens, the transparent main stem pulls the root hair to bear a distance in the artificial lens, the deeper part can be adjusted, the outer part is adjusted from the root, the inner part is adjusted by driving a region through the root hair, and the adjustment is more accurate, smooth and smooth.

Description

Basic lens structure for accurately adjusting focal length

Technical Field

The utility model relates to the field of artificial lenses, in particular to a basic lens structure for accurately adjusting focal length.

Background

The accommodating intraocular lens utilizes both vitreous movement and ciliary muscle contraction forces, as well as the convexity created during advancement, to achieve accommodation to ensure maximum anterior movement and adequate convexity required for clear near vision. The crystal moves like a 'sail', and the movement of the glass body is used to move forwards to the maximum extent to obtain near vision and to obtain clear middle and long distance vision when the crystal is relaxed to a plane state. That is to say, can look at the thing like normal people, make things convenient for patient's postoperative driving, daily work such as reading, life needs, improve patient's quality of life, this is the advantage that ordinary intraocular lens can not reach.

In the prior art, often through setting up the regulation pole on intraocular lens tong "pan", the mode that drives the regulation pole through vitreous body motion and ciliary muscle shrink and pull the intraocular lens body realizes the regulation of focus, and the edge atress of intraocular lens and regulation pole junction, however, in the in-service use, the edge atress is comparatively weak to the regulation of crystalline lens, can only satisfy the regulation of small-amplitude to the regulation also not accurate enough.

Disclosure of Invention

To solve the above problems, the present invention provides a basic lens structure for precisely adjusting the focal length.

The object of the utility model is achieved in the following way: a basic lens structure for precisely adjusting focal length comprises an elliptic lens body, and flexible transparent main bodies for adjusting the focal length of the lens are arranged at intervals on the periphery of the elliptic lens, and the main bodies extend out of the lens to draw the root hair of the lens.

Furthermore, the root hair material is arranged in a three-dimensional way, and the root hair is uniformly distributed in the lens body.

Further, the root hair material is arranged in a plane, and the plane is arranged into two layers which are respectively positioned on the upper surface and the lower surface of the lens body.

Further, the root hairs of the traction lens taper from the edge to the inside.

Further, the tapering means that the crotch-like branches taper inwardly.

Further, the tapering means tapering like a brush head toward the inside.

Further, the root hairs become soft from the edge of the lens to the inside.

Further, the root hair material is at least one of silica gel, polymethyl methacrylate, hydrophilic acrylate, hydrophobic acrylate and hydrogel, and the lens root hair material is the same as the lens body material.

A method of making a basic lens structure with fine focal length adjustment, comprising a lens material and further comprising a transparent backbone of the same material as the lens body but of a higher hardness than the lens body, said method of making comprising the steps of:

(1) the end part of the flexible transparent trunk is cut or cut into a crotch shape, and the cutting or cutting times are increased when the end part is closer to the end part;

(2) putting the transparent trunk processed in the step (1) into a container, adding a solvent capable of dissolving the trunk, and taking out the transparent trunk when the transparent trunk is dissolved and the fine tail ends of the root hairs are completely dissolved, so that the transparent trunk can be thinner and softer towards the end part;

(3) cleaning the transparent trunk taken out in the step (2), removing a surface solvent, and dispersing and putting the cleaned transparent trunk into a mold;

(4) adding lens material into the mould and forming, after forming, carrying out finish machining and installing the artificial lens loop and the loop structure.

Further, after the transparent trunk is dispersedly placed in the die in the step (3), the roots of the transparent trunk are arranged in a three-dimensional and uniform mode.

Further, after the transparent trunk is dispersedly placed in the die in the step (3), the root of the transparent trunk is divided into an upper layer and a lower layer.

(1) cutting or cutting the end part of the transparent trunk into a brush head shape, and tapering the end part;

A basic lens structure for precisely adjusting focal length is prepared and produced by a manufacturing method of the basic lens structure for precisely adjusting the focal length.

Compared with the prior art, the transparent main body capable of pulling the root hair of the crystalline lens is arranged on the periphery of the artificial crystalline lens, the transparent main body pulls the root hair to bear a certain distance in the artificial crystalline lens, the deeper part can be adjusted, the outer part is adjusted from the root, and the inner part is adjusted by pulling a region through the root hair, so that the adjustment is more accurate, smooth and smooth.

Drawings

FIG. 1 is a schematic view of a crotch-like structure of the root of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

FIG. 3 is a schematic view of a writing brush head according to the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 3;

FIG. 5 is a schematic structural view of the two-layer arrangement of the root hair in section B-B of FIG. 3;

FIG. 6 is a schematic structural view of the section A-A of FIG. 1 with the root hairs arranged in a three-dimensional and uniform manner;

fig. 7 is a perspective view of the present invention.

Wherein, 1, crystalline lens; 2. a transparent backbone; 21. root hair; 3. an intraocular lens loop; 4. a haptic structure.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing and simplifying the utility model, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered as limiting the utility model.

Example 1: as shown in fig. 1-7, the present invention provides a technical solution: a basic lens structure for accurately adjusting focal length comprises an elliptic lens 1 body, flexible transparent trunks 2 for adjusting the focal length of the lens 1 are arranged at intervals on the periphery of the elliptic lens 1 body, the transparent trunks 2 extend out of the root hair for pulling the lens 1 towards the inside of the lens 1, the distance of the root hair penetrating into the lens is smaller than 1/4 of the radius of the lens, the transparent trunks 2 with root hairs 21 capable of pulling the lens 1 are arranged on the periphery of the intraocular lens 1, the transparent trunks 2 pull the root hairs 21 to bear a section of distance in the intraocular lens 1 through the transparent trunks 2, the deeper parts can be adjusted, the outer parts are adjusted from the root, the inner parts pull a piece of area through the root hairs 21 for adjustment, and the adjustment is more accurate, smooth and smooth.

A method for manufacturing basic lens 1 structure with accurate focal length adjustment, which comprises a lens 1 material and a transparent trunk 2 with the same material as the lens 1 body material but higher hardness, and comprises the following steps:

(1) cutting or slicing the end of the transparent trunk 2 into a root shape;

(2) putting the transparent trunk 2 processed in the step (1) into a container, adding a solvent capable of dissolving the trunk, and taking out the transparent trunk 2 when the dissolving phenomenon occurs and the fine tail end of the root 21 is completely dissolved, so that the transparent trunk can become thinner and softer towards the end part;

(3) cleaning the transparent trunk 2 taken out in the step (2), removing the surface solvent, and dispersedly putting the cleaned transparent trunk 2 into a mold;

(4) adding the lens 1 material into a mould, forming, finishing after forming and installing the artificial lens loop 3 and the loop structure 4.

Example 2: the present embodiment is further limited to embodiment 1, and the material of the root hair 21 of the present invention is three-dimensionally arranged, and the root hair 21 is uniformly distributed in the lens 1 body, so that the root hair 21 is distributed from the periphery to the center of the circle inside the lens 1 to adjust the deeper part, and the outer part is adjusted from the root, and the inner part is adjusted by pulling a region through the root hair 21, so that the adjustment is more accurate, smooth and smooth.

(1) cutting or slicing the end of the transparent trunk 2 into a root shape;

(3) cleaning the transparent trunk 2 taken out in the step (2), removing the surface solvent, dispersing and putting the cleaned transparent trunk 2 into a mold, and setting the root hairs 21 of the transparent trunk 2 in a three-dimensional and uniform manner;

Example 3: the present embodiment is a further limitation to embodiment 1, and the plane of the material of the root hair 21 of the present invention is provided as two layers, which are respectively located on the upper surface and the lower surface of the lens 1 body, so that the root hair 21 is distributed from the periphery to the center of the circle from the upper surface and the lower surface of the lens 1, and the adjustment is performed on the two surfaces, and the precise adjustment can be performed because the root hair 21 on the two surfaces has different pulling forces on the lens 1.

(1) cutting or slicing the end of the transparent trunk 2 into a root shape;

(3) cleaning the transparent trunk 2 taken out in the step (2), removing a surface solvent, dispersing and putting the cleaned transparent trunk 2 into a mold, and dividing the root 21 of the transparent trunk 2 into an upper layer and a lower layer which are respectively arranged on the upper surface and the lower surface of the crystalline lens 1 body;

Example 4: the present embodiment is further limited to

embodiment

2 or 3, and the present invention is used to pull the root hair 21 of the crystalline lens 1 to be tapered from the edge to the inside, so that the root hair 21 is distributed from the periphery to the center of the circle from the upper surface and the lower surface of the crystalline lens 1, the stress of the crystalline lens 1 is gradually changed from the periphery to the center of the circle, and the change of the convexity is more accurate and smooth.

Example 5: the present embodiment is further limited to embodiment 4, and the tapering of the root hair 21 of the present invention is like a crotch-shaped fork and tapers inward, so that the root hair 21 is distributed from thick to thin and from small to large from the periphery to the center of the circle from the upper surface and the lower surface of the crystalline lens 1, the stress on the crystalline lens 1 is gradually changed from the periphery to the center of the circle, and the change of the convexity is more accurate and smooth.

(1) the end part of the transparent trunk 2 is cut or cut into a crotch shape, and the cutting or cutting times are more when the end part is closer;

Example 6: the present embodiment is further limited to embodiment 4, and the root 21 of the present invention is tapered like a brush head and is tapered inward.

(1) cutting or slicing the end of the transparent trunk 2 into a brush head shape, and tapering the end;

Example 7: this embodiment is a further limitation of example 4, in that the root hair 21 of the present invention becomes progressively softer from the lens edge to the interior, with the apex portion being as soft as the lens 1 body, so that the apex portion of root hair 21 is visible as one piece with the lens 1 body.

Example 8: this embodiment is further limited to example 1, the material of the root hair 21 of the present invention includes silica gel, polymethyl methacrylate, and hydrogel, and the material of the lens root hair 21 is the same as the material of the lens body 1, so that the existence of the root hair 21 does not affect the practical use.

(1) cutting or slicing the end of the transparent trunk 2 into a root shape;

(2) putting the transparent trunk 2 processed in the step (1) into a container, adding a dichloromethane solvent, and taking out when the transparent trunk 2 is dissolved and the fine tail end of the root hair 21 is completely dissolved;

(3) cleaning the transparent trunk 2 taken out in the step (2), removing the surface solvent, and dispersedly putting the cleaned transparent trunk 2 into a mold, so that the transparent trunk can become thinner and softer towards the end part;

Example 9: this embodiment is further limited to example 1, the material of root hair 21 of the present invention includes silica gel, hydrophilic acrylate, and hydrogel, and the material of the lens root hair 21 is the same as the material of the lens body 1, so that the existence of root hair 21 does not affect the practical use.

(1) cutting or slicing the end of the transparent trunk 2 into a root shape;

(2) putting the transparent trunk 2 processed in the step (1) into a container, adding a dichloromethane solvent, and taking out when the transparent trunk 2 is dissolved and the fine tail end of the root 21 is completely dissolved, so that the transparent trunk can be thinner and softer towards the end part;

Example 10: this embodiment is further limited to example 1, the material of root hair 21 of the present invention includes silica gel, hydrophobic acrylate, and hydrogel, and the material of the lens root hair 21 is the same as the material of the lens body 1, so that the existence of root hair 21 does not affect the practical use.

(1) cutting or slicing the end of the transparent trunk 2 into a root shape;

The materials of the lens 1 in examples 8, 9, 10 are different but have the same refractive index.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the overall concept of the present invention, and these should also be considered as the protection scope of the present invention.

Claims

1. A basic lens structure for fine focus adjustment comprising an elliptical lens body characterized by: flexible transparent trunks for adjusting the focal length of the lens are arranged at intervals on the periphery of the elliptic lens, and the trunks extend out of the root hair of the traction lens to the inside of the lens.

2. A basic lens structure for fine adjustment of focal length according to claim 1, characterized in that: the root hair material is arranged in a three-dimensional way, and the root hair is uniformly distributed in the lens body.

3. A basic lens structure for fine adjustment of focal length according to claim 1, characterized in that: the root hair material is arranged in a plane, the plane is arranged into two layers and is respectively positioned on the upper surface and the lower surface of the lens body.

4. A basic lens structure for fine adjustment of focal length according to claim 2 or 3, characterized in that: the root hair of the traction lens is tapered inwards from the edge.

5. A basic lens structure for fine adjustment of focal length according to claim 4, characterized in that: the tapering is like a crotch and the fork tapers inwards.

6. A basic lens structure for fine adjustment of focal length according to claim 4, characterized in that: the tapering is like a brush head and tapers inwards.

7. A basic lens structure for fine adjustment of focal length according to claim 4, characterized in that: the root hairs become soft gradually from the edge of the lens to the inside.

8. A basic lens structure for fine adjustment of focal length according to claim 1, characterized in that: the root hair material is at least one of silica gel, polymethyl methacrylate, hydrophilic acrylate, hydrophobic acrylate and hydrogel, and the lens root hair material is the same as the lens body material.

9. A method of making a basic lens structure for fine focus adjustment, comprising a lens material, characterized in that: further comprising a transparent backbone of the same material as the lens body but of a higher hardness than the lens body, the method of making comprising the steps of:

10. A method of making a basic lens structure with fine adjustment of focal length according to claim 9, wherein: and (4) after the transparent trunks are dispersedly placed into the die in the step (3), dividing the roots of the transparent trunks into three-dimensional uniform arrangement.

11. A method of making a basic lens structure with fine adjustment of focal length according to claim 9, wherein: and (4) after the transparent trunk is dispersedly placed into a die in the step (3), dividing the root hairs of the transparent trunk into an upper layer and a lower layer.

12. A method of making a basic lens structure for fine focus adjustment, comprising a lens material, characterized in that: further comprising a transparent backbone of the same material as the lens body but of a higher hardness than the lens body, the method of making comprising the steps of:

13. A method of making a basic lens structure with fine adjustment of focal length according to claim 12, wherein: and (4) after the transparent trunks are dispersedly placed into the die in the step (3), dividing the roots of the transparent trunks into three-dimensional uniform arrangement.

14. A method of making a basic lens structure with fine adjustment of focal length according to claim 12, wherein: and (4) after the transparent trunk is dispersedly placed into a die in the step (3), dividing the root hairs of the transparent trunk into an upper layer and a lower layer.

15. A basic lens structure for precisely adjusting focal length is prepared and produced by a manufacturing method of the basic lens structure for precisely adjusting the focal length.