Eyeball training model for full femtosecond surgery

Abstract

The utility model discloses an eyeball training model for a full femtosecond operation, and relates to the technical field of medical teaching aids. The eyeball training model for the full femtosecond surgery comprises a supporting base; the bottom of the eyeball body is fixedly connected with the supporting base, and the middle position of the top of the eyeball body is a cornea position; the cornea piece comprises an inner side layer, a cornea stroma lens sheet and an outer side layer which are sequentially arranged from bottom to top, the inner side layer is arranged at the cornea position, the inner side layer and the outer side layer are fixedly connected to form a closed containing cavity, the outer side layer is provided with a notch communicated with the containing cavity, the cornea stroma lens sheet is arranged in the containing cavity and is bonded to the inner side layer and the outer side layer, and the cornea stroma lens sheet is arranged in the notch. The cornea stroma lens sheet is configured to be capable of being separated from the containing cavity in the clamping state of the tweezers and disengaged from the incision. According to the utility model, teaching training of micromanipulation skills of the SMILE surgery can be provided, learning time is shortened, and the micromanipulation of the SMILE surgery can be mastered more quickly and skillfully.

Description

Technical Field

[0001] This utility model relates to the field of medical teaching aids technology, and in particular to an eyeball training model for femtosecond laser surgery. Background Technology

[0002] Today, most ophthalmic surgeries require microsurgery. The challenge of ophthalmic surgery lies in the precision required under a microscope; therefore, microsurgical skills training is a crucial component of ophthalmology training. Microscopes alter our visual perception of the real world, making microsurgical skills difficult to learn and requiring a long learning period. Traditionally, ophthalmology microsurgical training involves newcomers learning and practicing clinical skills on patients under the guidance of senior ophthalmologists. However, with increasing demands on medical education and societal progress, this traditional approach is showing growing difficulties and limitations, making it difficult for ophthalmologists to receive sufficient microsurgical training during clinical practice.

[0003] With societal progress and increasing demand for myopia treatment, more and more ophthalmology hospitals are establishing departments specializing in femtosecond laser surgery. Femtosecond laser-assisted lenticule extraction (SMILE) is currently the most widely used corneal refractive correction procedure, characterized by small incisions, easy recovery, and minimal impact. As the number of people learning SMILE surgery increases, more ophthalmologists are seeking easier access to firsthand experience performing the procedure. Traditional training methods typically use animal eye models, but animal eyes offer some differences in preservation and tactile feedback.

[0004] Currently, there are many specialized surgical training eye models on the market, mainly including anterior segment models, ultrasound models, laser models, femtosecond laser-assisted cataract surgery models, and minimally invasive glaucoma surgery models. However, there is no dedicated surgical training eye model specifically for SMILE surgery. Therefore, there is an urgent need for a dedicated surgical training eye model for SMILE surgery, which would be of great significance in improving microsurgical skills in SMILE surgery. Utility Model Content

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an eyeball training model for femtosecond LASIK surgery, which can provide ophthalmic surgery students with training in microsurgical skills for SMILE surgery, shortening learning time and enabling them to master SMILE surgery microsurgical techniques more quickly and proficiently.

[0006] This utility model embodiment provides an eye training model for femtosecond LASIK surgery, which includes:

[0007] Support base;

[0008] The eyeball is fixedly connected to the support base at its bottom, and the cornea is located at the middle position of the top of the eyeball.

[0009] A corneal device includes an inner layer, a corneal stromal lenticule, and an outer layer arranged sequentially from bottom to top. The inner layer is disposed on the cornea and is fixedly connected to the outer layer to form a closed receiving cavity. The outer layer has an incision communicating with the receiving cavity. The corneal stromal lenticule is disposed within the receiving cavity and is respectively adhered to the inner layer and the outer layer. The corneal stromal lenticule is configured to be detached from the receiving cavity and disengaged from the incision when grasped by forceps.

[0010] The eye training model for femtosecond LASIK surgery according to this utility model has at least the following beneficial effects: the eyeball and its corneal components remain stable and stationary under the support of the support base. Then, the operator, such as a beginner or trainer, can use forceps specifically designed for SMLIE surgery to simulate the incision separation steps, inserting the forceps through the incision on the corneal component into the receiving cavity and stably grasping the corneal stromal lenticule, thereby enabling the removal of the corneal stromal lenticule from the receiving cavity. Since the corneal stromal lenticule is bonded to the inner and outer layers respectively, it has a certain resistance. Therefore, when the operator uses forceps to grasp the corneal stromal lenticule, the operator can simulate the steps of separating the corneal stromal lenticule from the inner and outer layers, thereby enabling the operator to complete the teaching and training of microsurgery for femtosecond LASIK surgery with the help of this eye training model, shortening the learning curve and improving the microsurgery skills of beginners.

[0011] In some embodiments of this invention, the inner layer is bonded to the eyeball with double-sided adhesive.

[0012] In some embodiments of this utility model, the double-sided adhesive is annular, and the double-sided adhesive and the inner layer are coaxially arranged.

[0013] In some embodiments of this utility model, the incision is arc-shaped, the incision is located on the outside of the corneal stromal lenticule, and is concentrically arranged with the corneal stromal lenticule.

[0014] In some embodiments of this utility model, the length of the cut is 2-4 mm.

[0015] In some embodiments of this utility model, the inner and outer surfaces of the corneal stromal lenticule are provided with transparent adhesive tape; and / or, the corneal stromal lenticule is made of BOPP.

[0016] In some embodiments of this utility model, the eye training model for femtosecond LASIK surgery also includes a head model, the bottom of which is fixedly connected to the support base, the head model having an eye socket, and the eyeball being located in the eye socket.

[0017] In some embodiments of this utility model, the eye training model for femtosecond LASIK surgery further includes a height adjustment device, which is fixedly mounted on the support base. The output end of the height adjustment device is connected to one of the eyeball and the head model to adjust the height position.

[0018] In some embodiments of this invention, the corneal element is transparent.

[0019] In some embodiments of this utility model, the eyeball is made of PVC.

[0020] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention may be realized and obtained by means of the structures particularly pointed out in the description, claims, and drawings. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of an eyeball training model for femtosecond LASIK surgery provided according to an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the eye training model for femtosecond LASIK surgery provided according to an embodiment of the present invention, after omitting the support base;

[0023] Figure 3 This is a schematic diagram of the eye training model for femtosecond LASIK surgery provided according to another embodiment of the present invention, after omitting the support base;

[0024] Figure 4 This is a top view of the eye training model for femtosecond LASIK surgery provided according to another embodiment of the present invention, after omitting the support base;

[0025] Reference numerals: 100, support base; 200, eyeball; 300, corneal component; 310, lateral layer; 320, medial layer; 330, corneal stromal lenticule; 340, receiving cavity; 350, incision; 400, head model; 410, eye socket; 500, bulbar conjunctiva. Detailed Implementation

[0026] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0027] In the description of this utility model, it should be understood that features specified as "first" or "second" may explicitly or implicitly include one or more of those features. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] The following is for reference. Figures 1 to 4 This invention describes an eye training model for femtosecond LASIK surgery provided according to an embodiment of the present invention.

[0030] like Figures 1 to 4 As shown, the eye training model for SMILE surgery according to this embodiment of the present invention can not only provide beginners with training in microsurgical skills for SMILE surgery, thus shortening the learning curve for beginners in mastering microsurgical skills for SMILE surgery, but also allow experienced doctors to use this eye training model to teach and train ophthalmic surgery students, thereby greatly helping ophthalmic professionals in practicing and improving SMILE surgery techniques.

[0031] like Figure 1 and Figure 2 As shown, the structure of the eye training model used in femtosecond LASIK surgery includes a support base 100, an eyeball body 200, and a corneal component 300.

[0032] The support base 100 provides support and fixation for the eyeball 200. The shape and size of the support base 100 can be designed according to the specific needs of the eyeball 200 and are not specifically limited here. The support base 100 can be made of plastic or metal such as iron. The bottom of the support base 100 has a large pad to ensure the support base 100 remains stable and stationary. The top of the support base 100 has a support rod that provides an installation position for the eyeball 200. The support base 100 can be fixed to a designated location, such as a table, using adhesive or bolt connections to prevent displacement during operator training.

[0033] The bottom of the eyeball 200 is fixedly connected to the support base 100, allowing the eyeball 200 to remain stationary. The middle position of the top of the eyeball 200 is designated as the corneal position to determine the installation location of the corneal component 300. In this embodiment, the eyeball 200 is made of PVC (polyvinyl chloride). The overall material hardness of the eyeball 200 is moderate, simulating the hardness of a normal eyeball. The shape of the eyeball 200 is basically designed according to the characteristics of a normal eyeball.

[0034] The corneal component 300 comprises an inner layer 320, a corneal stromal lenticule 330, and an outer layer 310. The inner layer 320, corneal stromal lenticule 330, and outer layer 310 are arranged sequentially from bottom to top. It is understood that the cornea in a normal eye has a multi-layered structure, consisting of the epithelium, anterior elastic lamina, stroma, posterior elastic lamina, and endothelium. These layers are arranged sequentially from the outside in. The corneal stromal lenticule is an optical lens with a precise focal point etched into the stroma using a laser. In this embodiment, the inner layer 320 corresponds to the portion formed by the overlapping and connecting layers of the stroma, posterior elastic lamina, and endothelium; the outer layer 310 corresponds to the portion formed by the overlapping and connecting layers of the epithelium and anterior elastic lamina; and the corneal stromal lenticule 330 corresponds to the optical lens within the stroma. The inner layer 320 of the corneal component 300 is located on the cornea of ​​the eyeball 200, and the outer layer 310 is located above the inner layer 320. The inner layer 320 and the outer layer 310 are fixedly connected to form a closed receiving cavity 340, which provides a space for the corneal stromal lenticule 330. The outer layer 310 has a cut 350, which communicates with the receiving cavity 340. The corneal stromal lenticule 330 is located within the receiving cavity 340, and is respectively bonded to the inner layer 320 and the outer layer 310, so that the corneal stromal lenticule 330, the inner layer 320, and the outer layer 310 are stacked and concentrically arranged. The corneal stromal lenticule 330 is configured to be separated from the receiving cavity 340 and dislodged from the incision 350 while being held by forceps.

[0035] Understandably, the corneal stromal lenticule 330 appears circular when viewed vertically, and the incision 350 is arc-shaped. The size of the incision 350 can be 2-4 mm, and the angle of the incision 350 can be a conventional incision angle such as 90°, 120°, or 130°. The incision 350 is located on the side of the eyeball 200 near the forehead. The size of the incision 350 allows the corneal stromal lenticule 330 to pass through and allows the operator to insert and grasp surgical instruments such as forceps to perform the separation of the corneal stromal lenticule 330 into its upper and lower layers. The incision 350 is arc-shaped, located on the outer side of the corneal stromal lenticule 330, and is concentrically positioned with the corneal stromal lenticule 330.

[0036] The corneal stromal lenticule 330 is made of BOPP (biaxially oriented polypropylene film), giving it characteristics of being colorless, non-toxic, having high tensile strength, and good transparency. Both the inner and outer surfaces of the corneal stromal lenticule 330 are covered with transparent adhesive tape, which has moderate tack. The corneal stromal lenticule 330 is bonded to the inner layer 320 and the outer layer 310 respectively using the transparent adhesive tape. The adhesiveness of both opposing surfaces of the corneal stromal lenticule 330 allows the operator to simulate the separation sensation of the corneal stromal lenticule 330 and the tactile feedback of peeling it from the receiving cavity 340 of the corneal component 300 during the separation of the upper and lower layers. The transparent adhesive tape can completely cover the surface of the corneal stromal lenticule 330.

[0037] In this embodiment, the corneal component 300 is transparent. Specifically, the inner layer 320 and the outer layer 310 can be made of the same material as the corneal stromal lenticule 330, and the outer layer 310 is transparent so that the operator can directly observe the position of the corneal stromal lenticule 330.

[0038] Understandably, femtosecond LASIK is a procedure to treat myopia. During a normal procedure, femtosecond LASIK removes a portion of the corneal stromal tissue (i.e., a corneal stromal lenticule). In femtosecond LASIK, depending on the refractive power the patient needs to correct, the doctor can use the tissue-cutting function of the femtosecond laser to remove a stromal tissue of a certain size and shape from within the cornea of ​​the eye.

[0039] In this embodiment, the corneal component 300 on the eyeball 200 is arranged in a manner that simulates the laser scanning lens pattern in SMILE surgery. The corneal stromal lenticule 330 is adhered to the upper and lower layers (i.e., the inner layer 320 and the outer layer 310) with a certain adhesiveness. Furthermore, a tiny incision 350 with a length of 2-4 mm is made on the outer layer 310 corresponding to the edge position of the corneal stromal lenticule 330. This allows the operator to simulate the operation steps such as separating the incision 350 and separating the corneal stromal lenticule 330 from the upper and lower layers, and then remove the corneal stromal lenticule 330 from the receiving cavity 340 through the incision 350.

[0040] During the use of the eye training model for femtosecond LASIK surgery provided in this embodiment of the present invention, the eyeball 200 and the corneal component 300 thereon can remain stable and stationary under the support of the support base 100. Then, the operator, such as a beginner or a trainer, can use forceps specifically for SMLIE surgery, such as micro forceps, to simulate the separation steps of the incision 350 on the eye training model. Specifically, the forceps are inserted into the receiving cavity 340 through the incision 350 of the outer layer 310 in the corneal component 300 and the corneal stromal lenticule 330 is stably gripped, thereby enabling the corneal stromal lenticule 330 to be removed from the receiving cavity 340.

[0041] Because the corneal stromal lenticule 330 is bonded to the inner layer 320 and the outer layer 310 respectively, it has a certain degree of adhesive resistance. Therefore, when the operator uses tweezers to stably hold the corneal stromal lenticule 330, the operator can simulate the steps of separating the corneal stromal lenticule 330 from the inner layer 320 and the outer layer 310. Specifically, by holding the corneal stromal lenticule 330 with tweezers and applying force, the corneal stromal lenticule 330 is displaced relative to the inner layer 320 and the outer layer 310, thus releasing the corneal stromal lenticule. The adhesive relationship between the lenticule 330 and the inner layer 320, and between the corneal stromal lenticule 330 and the outer layer 310, allows the corneal stromal lenticule 330 to be detached from the inner layer 320 and the outer layer 310. At the same time, the corneal stromal lenticule 330 is gradually moved towards the incision 350, thereby enabling the operator to complete the teaching and training of microsurgery for femtosecond LASIK surgery using this eye training model, shortening the learning curve, improving the microsurgery skills of beginners, and allowing beginners to master microsurgery skills more quickly and proficiently.

[0042] In some embodiments, the corneal component 300 is detachably connected to the eyeball 200. Specifically, the inner layer 320 is bonded to the eyeball 200 with double-sided adhesive, allowing the corneal component 300 to be removed from the corneal position of the eyeball 200 for replacement with a new corneal component 300. The double-sided adhesive on the corneal component 300 has two adhesive surfaces, one of which is bonded to the inner layer 320, and the other adhesive surface has release paper. After peeling off the release paper, the double-sided adhesive can be applied to the corneal position of the eyeball 200, securing the corneal component 300 firmly to the eyeball 200. In this embodiment, the double-sided adhesive is annular and coaxially arranged with the inner layer 320, that is, the double-sided adhesive extends along the outer periphery of the inner layer 320.

[0043] Understandably, the corneal component 300 can be freely attached and fixed to the eyeball 200 and can be replaced multiple times according to training needs, allowing the operator to simulate operations with incisions 350 at angles such as 90°, 120°, and 130°, thereby obtaining surgical simulation effects with different incision angles 350. A first positioning mark, such as a raised dot, is provided on the eyeball 200; correspondingly, a second positioning mark, such as a positioning opening, is provided on the corneal component 300. By aligning the positioning opening with the raised dot, the corneal component 300 is ensured to be precisely positioned on the eyeball 200, thus guaranteeing the accurate angular position of the incision 350 on the eyeball 200. Of course, markings indicating the incision angle 350 can be provided on the corneal component 300, allowing the operator to visually understand the angle of the incision 350 on the corneal component 300.

[0044] In some embodiments, such as Figure 3 As shown, a bulbar conjunctival portion 500 is provided on the eyeball 200. The outer periphery of the bulbar conjunctival portion 500 is fixedly connected to the eyeball 200. A corneal component 300 is disposed at the central through-hole of the bulbar conjunctival portion 500 and is fixedly connected to the inner periphery of the bulbar conjunctival portion 500, for example, by adhesive bonding. The material of the bulbar conjunctival portion 500 should be such that it can be grasped by tweezers and can simulate the movable nature of the bulbar conjunctiva of a normal eyeball. For example, the bulbar conjunctival portion 500 can be made of a material with good tensile properties, such as BOPP or PP (i.e., polypropylene). In some examples, the bulbar conjunctival portion 500 overlaps and is bonded to the outer layer 310 of the corneal component 300. In other examples, the inner layer 320 of the corneal component 300 overlaps and is bonded to the bulbar conjunctival portion 500.

[0045] In some embodiments, such as Figure 4 As shown, the structure of the eye training model used in femtosecond LASIK surgery also includes a head model 400. The bottom of the head model 400 is fixedly connected to the support base 100, ensuring stability under the support of the support base 100. The head model 400 can be designed using a simulated human skull or a simulated human head. The head model 400 has two eye sockets 410, with the eyeballs 200 located at the eye sockets 410. In some examples, the eyeballs 200 are directly mounted at the eye sockets 410 and fixedly connected to the head model 400, which is then fixedly mounted on the support base 100. In other examples, the eyeballs 200 are fixedly mounted on the support base 100 via a bracket that passes through the head model 400, which is then mounted on the support base 100 via a support frame.

[0046] Of course, to save materials, the head model 400 can retain only the eye sockets 410 and the forehead.

[0047] Furthermore, the structure of the eye training model used for femtosecond LASIK surgery also includes a height adjustment device. This height adjustment device is fixedly mounted on the support base 100, and its output is connected to either the eyeball body 200 or the head model 400 for height adjustment.

[0048] Understandably, the output of the height adjustment device can be fixedly connected to the eyeball 200 to adjust the height position of the eyeball 200 relative to the head model 400, or it can be fixedly connected to the head model 400 to adjust the height position of the head model 400 relative to the eyeball 200. The height adjustment device can be electrically driven or manually driven. Different conventional lifting devices can be selected according to actual needs. In some examples, the height adjustment device can be an electric cylinder. In other examples, the height adjustment device can be a hand-cranked screw lifting mechanism. This design allows for free design of the height of the eyeball 200 and the corneal component 300 on it, simulating surgical simulations under different degrees of eye socket retraction 410.

[0049] Furthermore, the diameter and thickness of the corneal stromal lenticule 330 can be selected according to actual needs. Generally, the diameter of the corneal stromal lenticule 330 is 6.0 to 6.9 mm. In one specific embodiment, the diameter of the corneal stromal lenticule 330 is 6.5 mm. After removal, the corneal stromal lenticule 330 can be returned to the receiving cavity 340 through the incision 350. The corneal stromal lenticule 330 is... Figure 2 and Figure 3 The black-filled portion is shown.

[0050] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0051] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An eyeball training model for femtosecond LASIK surgery, characterized in that, include: Support base; The eyeball is fixedly connected to the support base at its bottom, and the cornea is located at the middle position of the top of the eyeball. A corneal device includes an inner layer, a corneal stromal lenticule, and an outer layer arranged sequentially from bottom to top. The inner layer is disposed on the cornea and is fixedly connected to the outer layer to form a closed receiving cavity. The outer layer has an incision communicating with the receiving cavity. The corneal stromal lenticule is disposed within the receiving cavity and is respectively adhered to the inner layer and the outer layer. The corneal stromal lenticule is configured to be detached from the receiving cavity and disengaged from the incision when grasped by forceps.

2. The eyeball training model for femtosecond LASIK surgery according to claim 1, characterized in that, The inner layer is bonded to the eyeball with double-sided adhesive.

3. The eyeball training model for femtosecond LASIK surgery according to claim 2, characterized in that, The double-sided adhesive is in the shape of a ring, and the double-sided adhesive and the inner layer are arranged coaxially.

4. The eyeball training model for femtosecond LASIK surgery according to claim 1, characterized in that, The incision is arc-shaped and located on the outer side of the corneal stromal lenticule, and is concentrically positioned with the corneal stromal lenticule.

5. The eyeball training model for femtosecond LASIK surgery according to claim 4, characterized in that, The length of the incision is 2-4 mm.

6. The eyeball training model for femtosecond LASIK surgery according to claim 1, characterized in that, The inner and outer surfaces of the corneal stromal lenticule are provided with transparent adhesive tape; and / or, the corneal stromal lenticule is made of BOPP.

7. The eyeball training model for femtosecond LASIK surgery according to claim 1, characterized in that, It also includes a head model, the bottom of which is fixedly connected to the support base, the head model having eye sockets, and the eyeballs located in the eye sockets.

8. The eyeball training model for femtosecond LASIK surgery according to claim 7, characterized in that, It also includes a height adjustment device, which is fixedly mounted on the support base. The output end of the height adjustment device is connected to one of the eyeball and the head model to adjust the height position.

9. The eyeball training model for femtosecond LASIK surgery according to claim 1, characterized in that, The corneal element is transparent.

10. The eyeball training model for femtosecond LASIK surgery according to claim 9, characterized in that, The eyeball is made of PVC.

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