Ophthalmic surgical device

Abstract

The utility model provides an ophthalmologic operation device. The ophthalmologic operation device comprises a cutting wheel and a holding part, the cutting wheel is used for rotationally cutting an affected part in an eye. And the thickness of the edge of the cutting wheel is between 0.1 mm and 0.4 mm. One end of the holding part is held by a user, and the other end of the holding part is rotatably connected with the cutting wheel, so that when the user uses the cutting wheel to cut an affected part, the cutting wheel can rotate along with the operation of the user.

Description

Technical Field

[0001] The present application relates to an ophthalmic surgical device, in particular to a cataract lens nucleus crusher. Background Art

[0002] Cataract is a very common disease in ophthalmology, especially for the elderly. Simply put, the lens in the eyeball is transparent and bright under normal circumstances. When this originally transparent lens becomes cloudy, light cannot penetrate completely and causes blurred vision. It is like a layer of dust on the camera lens, blocking the light from passing through and causing blurred images. This is called "cataract".

[0003] Currently, cataracts are mainly treated through ophthalmic surgery, which uses surgical instruments or lasers to make an incision on the outside of the cornea to open the capsule. Then, the cloudy lens (also known as the nucleus) is removed and an artificial lens is inserted.

[0004] When removing the nucleus, the doctor usually uses an ophthalmic surgical instrument to cut the nucleus into pieces, and then uses ultrasound to emulsify and shatter the nucleus for easy suction. This type of surgical instrument is generally called a nucleus crusher (knife) or a nucleus splitter (hook). The relevant content of the prior art can refer to Chinese patents CN202027785U, CN220158541U, CN211460815U, CN209529470U, etc., but there is still room for improvement. Utility Model Content

[0005] After research, the inventor of the present application found that the above-mentioned prior art nucleus crusher still has many problems in practice. In view of this, the embodiment of the present application proposes an ophthalmic surgical device, which includes a cutting wheel and a gripping portion. The cutting wheel is used to cut the affected part, and the thickness of the edge of the cutting wheel is between 0.1mm and 0.4mm. One end of the gripping portion is for the user to hold, and the other end of the gripping portion is rotatably connected to the cutting wheel, whereby when the user (e.g., an ophthalmologist) uses the cutting wheel to cut the affected part, the cutting wheel can rotate with the user's operation.

[0006] Through the above design, the advantages of the cutting wheel proposed in this application can be understood through the general pizza roller cutter. There are crust and toppings on the pizza, and the two are sticky and have inconsistent hardness. If a general knife is used for cutting, it is easy to produce uneven force in the vertical direction (up and down) and horizontal direction (front and back), which makes it difficult to accurately control the applied force. For example, the force applied by the knife may be mainly concentrated in the vertical direction, resulting in insufficient force in the horizontal direction and turning it into pulling rather than cutting. This will cause uneven incisions or even separation of the crust and toppings. On the contrary, because the roller cutter has consistent force up and down and front and back on the entire roller, it can cut out clean and neat pizza pieces.

[0007] Biological tissues, especially turbid lenses, are also sticky and have inconsistent hardness. When operating a traditional scalpel, it is difficult to avoid uneven force in the vertical direction (up and down) and the horizontal direction (front and back). Therefore, it is difficult to cut accurately, and it is easy to pull, which may cause unnecessary damage to other tissues in the eye (such as the posterior capsule of the nucleus used to support the artificial lens). It is understandable that this problem greatly increases the risk of surgical failure in ophthalmic surgery. On the contrary, through the cutting wheel proposed in this application, the entire up and down, front and back force is consistent, which can avoid the above risks.

[0008] In addition, the blades of existing nucleus crushers are not sharp enough, making it difficult for doctors to accurately control the force and position of the force during surgery. The result is that the operation time is prolonged at best, and the affected tissue is pulled and damaged unnecessarily at worst. It also has an adverse effect on other tissues in the eye (such as the posterior capsule of the crystal nucleus used to support the artificial lens). In particular, because the thickness of an ophthalmic scalpel is very small, much smaller than the diameter of a general iron wire, and even expected to be only about 0.1mm-0.4mm, compared with the hardness and toughness of the crystal nucleus, such a thin stainless steel blade will highlight its insufficient hardness and easy blunting problems. In addition, intraocular perfusion solution is used during cataract surgery. When the lens is immersed in the perfusion solution, the lens is easy to float, and a blade that is not sharp enough will find it difficult to exert force, increasing the difficulty of cutting.

[0009] In view of this, the entirety of the cutting wheel proposed in the present application or at least the portion of the edge thereof that contacts the affected part is not made of stainless steel or metal material. Instead, in order to increase the hardness and reduce metal contamination, non-metallic materials such as ceramics can be used. In addition to ceramics, diamond or boron nitride can also be used. Preferably, a non-metallic material with a HRC hardness of 58 or more, or even a HRC hardness of 59 or more is used. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 A side view of an ophthalmic surgical device according to an embodiment of the present application;

[0011] Figure 2 A schematic diagram of the use of the ophthalmic surgical device according to an embodiment of the present application;

[0012] Figure 3 This is a top view of an ophthalmic surgical device according to an embodiment of the present application. DETAILED DESCRIPTION

[0013] The following will illustrate the preferred embodiments of the present application with reference to the accompanying drawings. To avoid unclear contents of the present application, the following description also omits well-known components, related materials, and related processing technologies. At the same time, to clearly illustrate the present application, the components in the accompanying drawings may not be drawn according to actual sizes or relative proportions.

[0014] Please refer to Figure 1 , which is a side view of an embodiment of an ophthalmic surgical device 1 of the present application. The ophthalmic surgical device 1 comprises a cutting wheel 10 and a gripping portion 20.

[0015] One end (not shown) of the gripping portion 20 of the ophthalmic surgical device 1 is provided for convenient gripping by the user (eg, an ophthalmologist). This part may refer to the gripping portion of an existing ophthalmic scalpel or a nuclear crusher, and will not be described in detail here.

[0016] Different from the prior art, Figure 1 As shown, the other end of the gripping portion 20 is rotatably connected to the cutting wheel 10. It is worth mentioning that the present application does not intend to limit the connection method between the gripping portion 20 and the cutting wheel 10, as long as the cutting wheel 10 can rotate freely around its center of a circle. Figure 2 As shown, when an ophthalmologist uses the cutting wheel 10 to cut the affected part (eg, the turbid lens 2), the cutting wheel 10 can rotate along with the operation of the ophthalmologist to generate a uniform cutting force.

[0017] It is particularly noted that the present application does not wish to limit the location of the affected part to be cut by the cutting wheel 10. In addition to the lens 2, for example, the cutting wheel 10 can also be used to cut the cornea (not shown). Specifically, when performing cataract surgery, the ophthalmologist can first use the cutting wheel 10 of the ophthalmic surgical device 1 to make an incision on the cornea, and then use the same cutting wheel 10 to extend into the incision to cut the lens nucleus, thereby reducing the number of surgical instruments required.

[0018] In addition, Figure 1 As shown, the edge of the cutting wheel 10 is substantially a perfect circle to ensure that the force is uniform over the entire circumferential edge, and the edge of the cutting wheel 10 should avoid having obvious serrations, as serrations would cause uneven force application.

[0019] In one embodiment, the diameter D of the cutting wheel 10 for cutting the crystalline nucleus is between 1 mm and 2.2 mm. Preferably, considering the size of the corneal incision in cataract surgery, the diameter D of the cutting wheel 10 may be less than or equal to 2 mm to facilitate passing through the corneal incision. However, in other embodiments, the diameter D of the cutting wheel 10 may also be adjusted according to the condition of the affected part to be cut.

[0020] like Figure 3As shown in the top view, in order to ensure that it is sharp enough, from a physical point of view, for the same applied force, the smaller the contact surface, the greater the pressure. Therefore, the thickness T of the cutting wheel 10 is theoretically as thin as possible. In practice, the thickness T of the cutting wheel 10 can be between 0.1 mm and 0.4 mm, preferably 0.4 mm. It should be noted that Figure 3 The entire thickness of the cutting wheel 10 is the same, but in other embodiments not shown, the entire thickness of the cutting wheel 10 may not necessarily be the same. For example, the cutting wheel 10 may have a thinner thickness at the edge (because cutting is mainly performed by the edge), while the portion close to the center may have a thicker thickness.

[0021] It should also be noted that, in the case of such a small thickness, general metal or stainless steel will have the problem of insufficient hardness. Therefore, in one embodiment, the entirety of the cutting wheel 10 or at least the portion of its edge that contacts the affected part is not made of stainless steel or metal material. On the contrary, in order to increase the hardness and reduce metal contamination, it is preferred to use non-metallic materials, such as ceramic materials. In addition to ceramics, diamond or boron nitride can also be used. Preferably, a non-metallic material with a HRC hardness of 58 or more, or even a HRC hardness of 59 or more is used.

[0022] In another embodiment, the cutting wheel 10 can be formed by 3D printing, so the material of the cutting wheel 10 can use a common 3D printing material. For example, among the 3D printing materials, silicon nitride, aluminum oxide, and zirconium oxide all have good hardness.

[0023] The above description is only a preferred embodiment of the present application and is not intended to limit the scope of the patent application of the present application; any other equivalent changes or modifications made without departing from the gist disclosed in the present application should be included in the scope of the patent application of the claims.

[0024] [Description of Reference Numerals]

[0025] Ophthalmic surgical devices1

[0026] Crystal 2

[0027] Cutting wheel 10

[0028] Grip 20

[0029] Diameter D

[0030] Thickness T

Claims

1. An ophthalmic surgical device, characterized in that: Include: a cutting wheel for cutting the affected area; and A gripping portion, one end of which is for a user to grip, and the other end of which is rotatably connected to the cutting wheel, whereby when the user cuts the affected part with the cutting wheel, the cutting wheel can rotate along with the user's operation. 2 . The ophthalmic surgical device according to claim 1 , wherein the thickness of the edge of the cutting wheel is between 0.1 mm and 0.4 mm.

3. The ophthalmic surgical device according to claim 2, characterized in that: The thickness of the cutting wheel edge is 0.4 mm.

4. The ophthalmic surgical device according to claim 1 or 2, characterized in that: The edge of the cutting wheel is substantially a perfect circle.

5. The ophthalmic surgical device according to claim 4, characterized in that: The diameter of the cutting wheel is between 1 mm and 2.2 mm.

6. The ophthalmic surgical device according to claim 5, characterized in that: The diameter of the cutting wheel is less than or equal to 2 mm.

7. The ophthalmic surgical device according to claim 1 or 2, characterized in that: The portion of the cutting wheel that contacts the affected part is made of a non-metallic material.

8. The ophthalmic surgical device according to claim 7, characterized in that: The non-metallic material is a ceramic material.

9. The ophthalmic surgical device according to claim 7, characterized in that: The cutting wheel is made of 3D printing material.

10. The ophthalmic surgical device according to claim 7, characterized in that: The cutting wheel is made of a material with a HRC hardness of 58 or more.

11. The ophthalmic surgical device according to claim 1 or 2, characterized in that: The ophthalmic surgical device is a cataract lens nucleus crusher.

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