Lens capsular bag fixing device
By designing a lens capsule fixation device including hook, suture and through-passing needle, the problem of capsule fixation in cases of lens dislocation greater than 180° was solved, stable fixation and vision improvement were achieved, and the risk of complications was reduced.
Patent Information
- Application Number
- CN202510232397.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2025-04-15
AI Technical Summary
For cases where the lens dislocation range is greater than 180°, it is difficult to fix it on the basis of retaining the lens capsule, which affects the postoperative visual acuity improvement effect and may lead to complications such as intraocular lens dislocation.
A lens capsule fixing device is designed, including a hook, suture and a through needle. By hooking the anterior capsule of the lens, the suture is connected to the through needle and the suture is fixed on the human tissue outside the sclera, so as to achieve effective fixation of the capsule.
On the basis of retaining the lens capsule bag, stable fixation of the capsule bag is achieved, which improves the vision and visual quality after surgery, and reduces the possibility of complications such as artificial lens dislocation.
Smart Images
Figure CN119818289A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of medical devices, and in particular to a lens capsule fixing device. Background Art
[0002] Lens dislocation is a common disease in ophthalmology. There are two main traditional surgical methods for lens dislocation that are widely used in clinical practice: the first one is to preserve the lens capsule and implant a tension ring in the capsule combined with an intraocular lens for cases with a lens dislocation range of less than 180° (i.e., 2 quadrants). The second one is to remove the lens capsule and suspend the intraocular lens for cases with a lens dislocation range of more than 180°.
[0003] For the second surgical method mentioned above, there is a certain degree of uncertainty in the effective position and stability of the intraocular lens, which affects the effect of postoperative visual improvement, and there is a possibility of complications such as intraocular lens dislocation in the long term. For such cases, if the lens capsular bag can be retained and the capsular bag is fixed with a capsular bag fixation device, the physiological anatomy of the patient's eyeball can be retained to the maximum extent, the position of the intraocular lens after implantation is more ideal, and the postoperative vision and visual quality are better. At present, there is no relevant finished device application in clinical practice to achieve lens capsular bag fixation. Summary of the invention
[0004] Based on the above description, the present invention provides a lens capsular bag fixing device to solve the technical problem that it is difficult to fix the lens capsular bag while retaining the lens capsular bag in cases where the lens dislocation range is greater than 180°.
[0005] The technical solution of the present invention to solve the above technical problems is as follows:
[0006] A lens capsule fixing device comprises: a retractor, a suture and a threading needle; the tail of the retractor is connected to one end of the suture, and the other end of the suture is connected to the tail of the threading needle; the head of the retractor is used to hook the anterior lens capsule opening; the end of the suture connected to the threading needle is used to suture and fix it on the human tissue outside the sclera.
[0007] Based on the above technical solution, the present invention can also be improved as follows.
[0008] Furthermore, the length of the retractor is 1 to 1.5 mm; the width of the retractor is 0.8 to 1 mm.
[0009] Furthermore: the retractor is made of polymethyl methacrylate.
[0010] Furthermore: the length of the suture is 50mm to 60mm.
[0011] Furthermore: the suture is 7-0 polypropylene suture.
[0012] Furthermore: the length of the threading needle is 15mm to 20mm.
[0013] Furthermore: the threading needle is made of stainless steel; the outer surface of the threading needle is provided with a silicone coating.
[0014] Furthermore: the pull hook includes: a first side portion and a second side portion; one end of the first side portion and one end of the second side portion are connected to form a hook-shaped structure.
[0015] Further: the first side portion and the second side portion are respectively configured as arc structures.
[0016] Further: a reinforcement portion is provided at the connection between the first side portion and the second side portion; the reinforcement portion is connected to the first side portion and the second side portion respectively.
[0017] Compared with the prior art, the technical solution of the present invention has the following beneficial technical effects:
[0018] The lens capsular bag fixing device provided by the present invention has a tail of a retractor connected to one end of a suture, and the other end of the suture is connected to the tail of a tracing needle; the end of the suture connected to the tracing needle is used for suturing and fixing on human tissue outside the sclera, the suture has a pulling effect on the retractor, and the head of the retractor hooks the anterior lens capsule opening, and the anterior lens capsule opening is effectively fixed under the cooperation of the suture and the retractor. For cases where the range of lens dislocation is greater than 180°, the lens capsular bag can be effectively fixed on the basis of retaining the lens capsular bag, thereby ensuring the effect of improving postoperative vision and reducing the possibility of complications such as long-term intraocular lens dislocation. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 A schematic diagram of the structure of a lens capsular bag fixing device provided in Embodiment 1 of the present invention;
[0020] Figure 2 A schematic diagram of the structure of a lens capsular bag fixing device provided in the second embodiment of the present invention;
[0021] Figure 3 This is a schematic diagram of the structure of the lens capsule fixing device provided in Example 3 of the present invention.
[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows:
[0023] 1-thread, 2-suture, 3-retractor, 31-first side, 32-second side, 33-reinforcement part. DETAILED DESCRIPTION
[0024] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.
[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.
[0026] It will be appreciated that spatial relationship terms such as "under," "beneath," "below," "under," "above," "above," etc., may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It will be appreciated that, in addition to the orientations shown in the figures, spatial relationship terms also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, an element or feature described as "under other elements" or "under it" or "under it" will be oriented as being "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.
[0027] It should be noted that when an element is considered to be “connected to” another element, it can be directly connected to the other element or connected to the other element through an intervening element.
[0028] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.
[0029] The lens capsule fixing device provided by the present invention is described in detail below in conjunction with specific embodiments:
[0030] Embodiment 1
[0031] See also Figure 1 The embodiment of the present invention provides a lens capsule fixing device, which mainly includes: a retractor 3, a suture 2 and a threading needle 1. The functions and positional relationships of the components are described as follows:
[0032] The retractor 3 plays the role of fixing the lens capsular bag in the eye. During surgery under a microscope, the retractor 3 is used to hook the anterior lens capsular opening to fix the capsular bag. According to the range of lens dislocation, a lens capsular bag fixing device needs to be placed in the eye. The retractor 3 needs to be permanently stored in the eye, so the material of the retractor 3 must remain stable for a long time in the intraocular environment, without corrosion or chemical reaction, to prevent the retractor 3 from causing intraocular complications. Polymethyl methacrylate is a material for making artificial lenses that has been widely used in clinical practice. It can be stored in the eye for a long time and the material is stable and safe. In this embodiment, the retractor 3 is made of polymethyl methacrylate.
[0033] The tail of the retractor 3 is connected to one end of the suture 2, and the other end of the suture 2 is connected to the tail of the needle 1. During surgery under a microscope, one end of the suture 2 is brought out of the eye through the needle 1, and is fixed in a "Z" shape in the sclera layer of the eyeball, and the needle 1 and the excess suture 2 are cut off. The outer end of the suture 2 is burned and expanded at the point where the sclera of the eyeball passes through, and is embedded in the human tissue outside the sclera and under the conjunctiva. The length of the suture 2 is 50mm; the suture 2 uses 7-0 polypropylene suture.
[0034] The needle 1 is made of stainless steel and contains nickel and chromium. The surface of the needle 1 is provided with an organic silicon coating. Organic silicon has the advantages of being non-toxic, safe and stable. The needle 1 provided with an organic silicon coating does not irritate human tissue and can ensure the safety of the operation. The needle head of the needle 1 is spade-shaped, the needle length is 15 mm, and the needle is as thin as possible. It is used to connect the suture 2 and play the role of pulling the suture 2 from the inside of the eye to the outside of the eye.
[0035] In this embodiment, the retractor 3 includes: a first side portion 31 and a second side portion 32; one end of the first side portion 31 is connected to one end of the second side portion 32 to form a hook-shaped structure. The first side portion 31 and the second side portion 32 are respectively configured as arc structures, which can improve the smoothness of the retractor 3 and prevent discomfort to the eyes caused by long-term placement in the eye. A reinforcing portion 33 is provided at the connection between the first side portion 31 and the second side portion 32. The material of the reinforcing portion 33 is the same as that of the first side portion 31 and the second side portion 32, both of which are polymethyl methacrylate; the reinforcing portion 33 is respectively connected to the first side portion 31 and the second side portion 32. The purpose of providing the reinforcing portion 33 is to prevent the retractor 3 from being pulled, deformed and falling off when fixing the lens capsule. In order to ensure the effect of this lens capsular bag fixing device in stabilizing the capsular bag and the convenience of surgical operation, the length of the hook 3 is set to 1 mm and the width of the hook 3 is set to 0.8 mm; wherein, the length of the hook is defined as the straight-line distance between the first endpoint (the endpoint where the first side 31 and the second side 32 are connected) and the second endpoint (the endpoint on the first side 31 connected to the suture 2); the width of the hook is defined as the vertical distance between the third endpoint (the endpoint on the second side 32 for hooking the anterior capsule opening of the lens) and the first side 31.
[0036] Embodiment 2
[0037] See also Figure 2 The embodiment of the present invention provides a lens capsule fixing device, which mainly includes: a retractor 3, a suture 2 and a threading needle 1. The functions and positional relationships of the components are described as follows:
[0038] The retractor 3 plays the role of fixing the lens capsular bag in the eye. During surgery under a microscope, the retractor 3 is used to hook the anterior capsular opening of the lens to fix the capsular bag. According to the range of lens dislocation, two such lens capsular bag fixing devices are symmetrically placed in the eye. Similarly, the retractor 3 needs to be permanently stored in the eye, so the material of the retractor 3 must remain stable for a long time in the intraocular environment without corrosion or chemical reaction, so as to prevent the retractor 3 from causing intraocular complications. In this embodiment, the retractor 3 is also made of polymethyl methacrylate. In order to ensure the effect of this lens capsular bag fixing device in stabilizing the capsular bag and the convenience of surgical operation, the length of the retractor 3 is set to 1.5 mm and the width of the retractor 3 is set to 1 mm.
[0039] The tail of the retractor 3 is connected to one end of the suture 2, and the other end of the suture 2 is connected to the tail of the penetration needle 1. During surgery under a microscope, one end of the suture 2 is brought out of the eye through the penetration needle 1, and the penetration needle 1 and the excess suture 2 are cut off. The outer end of the suture 2 is burned and expanded at the point where it passes through the sclera of the eyeball, and is embedded in the human tissue outside the sclera and under the conjunctiva. The length of the suture 2 is 60mm; the suture 2 also uses 7-0 polypropylene suture 2.
[0040] The needle 1 is made of stainless steel and contains nickel and chromium. The surface of the needle 1 is provided with an organic silicon coating. Organic silicon has the advantages of being non-toxic, safe and stable. The needle 1 provided with an organic silicon coating does not irritate human tissue and can ensure the safety of the operation. The needle head of the needle 1 is spade-shaped, the needle length is 20 mm, and the needle is as thin as possible. It is used to connect the suture 2 and play the role of pulling the suture 2 from the inside of the eye to the outside of the eye.
[0041] In this embodiment, the retractor 3 includes: a first side portion 31 and a second side portion 32; one end of the first side portion 31 is connected to one end of the second side portion 32 to form a hook-shaped structure. The first side portion 31 and the second side portion 32 are respectively configured as arc structures, which can improve the smoothness of the retractor 3 and prevent discomfort to the eye caused by long-term placement in the eye.
[0042] Embodiment 3
[0043] See also Figure 3 The embodiment of the present invention provides a lens capsule fixing device, which mainly includes: a retractor 3, a suture 2 and a threading needle 1. The functions and positional relationships of the components are described as follows:
[0044] The retractor 3 plays the role of fixing the lens capsular bag in the eye. During surgery under a microscope, the retractor 3 is used to hook the anterior capsule opening of the lens to fix the capsular bag; according to the range of lens dislocation, two of these lens capsular bag fixing devices are symmetrically placed in the eye. Similarly, the retractor 3 needs to be permanently stored in the eye, so the material of the retractor 3 must remain stable for a long time in the intraocular environment, without corrosion or chemical reaction, to prevent the retractor 3 from causing intraocular complications. In this embodiment, the retractor 3 is also made of polymethyl methacrylate. In order to ensure the effect of this lens capsular bag fixing device in stabilizing the capsular bag and the convenience of surgical operation, the length of the retractor 3 is set to 1.3mm and the width of the retractor 3 is set to 0.9mm.
[0045] The tail of the retractor 3 is connected to one end of the suture 2, and the other end of the suture 2 is connected to the tail of the needle 1. During surgery under a microscope, one end of the suture 2 is brought out of the eye through the needle 1, and the needle 1 and the excess suture 2 are cut off. The outer end of the suture 2 is burned and expanded at the point where it passes through the sclera of the eyeball, and is embedded in the human tissue outside the sclera and under the conjunctiva. The length of the suture 2 is 55mm; the suture 2 also uses 7-0 polypropylene suture 2.
[0046] The needle 1 is made of stainless steel and contains nickel and chromium. The surface of the needle 1 is provided with an organic silicon coating. Organic silicon has the advantages of being non-toxic, safe and stable. The needle 1 provided with an organic silicon coating does not irritate human tissue and can ensure the safety of the operation. The needle head of the needle 1 is spade-shaped, the needle length is 18mm, and the needle is as thin as possible. It is used to connect the suture 2 and play the role of pulling the suture 2 from the inside of the eye to the outside of the eye.
[0047] In this embodiment, the hook 3 includes: a first side portion 31 and a second side portion 32, the first side portion 31 is a 90° bent structure, and the second side portion 32 is a straight structure; one end of the first side portion 31 is connected to one end of the second side portion 32 to form a hook-shaped structure.
[0048] The technical solution provided by the embodiment of the present invention has at least the following beneficial technical effects or advantages:
[0049] The lens capsular bag fixing device provided by the embodiment of the present invention has a tail of a retractor connected to one end of a suture, and the other end of the suture is connected to the tail of a tracing needle; the end of the suture connected to the tracing needle is used for suturing and fixing on human tissue outside the sclera, the suture has a pulling effect on the retractor, and the head of the retractor hooks the anterior lens capsule opening, and the anterior lens capsule opening is effectively fixed under the cooperation of the suture and the retractor. For cases where the range of lens dislocation is greater than 180°, the lens capsular bag can be effectively fixed on the basis of retaining the lens capsular bag, thereby ensuring the effect of improving postoperative vision and reducing the possibility of complications such as long-term intraocular lens dislocation.
[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims
1. A lens capsular bag fixing device, characterized in that: include: A retractor, a suture and a threading needle; the tail of the retractor is connected to one end of the suture, and the other end of the suture is connected to the tail of the threading needle; the head of the retractor is used to hook the anterior capsule opening of the lens; the end of the suture connected to the threading needle is used to suture and fix it on the human tissue outside the sclera.
2. The lens capsular bag fixing device according to claim 1, characterized in that: The length of the hook is 1 mm to 1.5 mm; the width of the hook is 0.8 mm to 1 mm.
3. The lens capsular bag fixing device according to claim 1, characterized in that: The draw hook is made of polymethyl methacrylate.
4. The lens capsular bag fixing device according to claim 1, characterized in that: The length of the suture is 50 mm to 60 mm.
5. The lens capsular bag fixing device according to claim 1, characterized in that: The suture is 7-0 polypropylene suture.
6. The lens capsular bag fixing device according to claim 1, characterized in that: The length of the threading needle is 15 mm to 20 mm.
7. The lens capsular bag fixing device according to any one of claims 1 to 7, characterized in that: The threading needle is made of stainless steel; the outer surface of the threading needle is provided with an organic silicon coating.
8. The lens capsular bag fixing device according to any one of claims 1 to 7, characterized in that: The hook comprises: a first side portion and a second side portion; one end of the first side portion and one end of the second side portion are connected to form a hook-shaped structure.
9. The lens capsular bag structure fixing device according to claim 8, characterized in that: The first side portion and the second side portion are respectively configured as arc structures.
10. The lens capsular bag structure fixing device according to claim 9, characterized in that: A reinforcing portion is provided at the connection between the first side portion and the second side portion; the reinforcing portion is connected to the first side portion and the second side portion respectively.