Full femtosecond operation practice model

Abstract

The utility model provides a full femtosecond surgery practice model which comprises a simulated eyeball, a simulated cornea, a simulated matrix lens and a cover ring, the simulated cornea and the simulated matrix lens are sequentially stacked on the simulated eyeball, and the cover ring is arranged on the simulated cornea to tightly press the simulated cornea and the simulated matrix lens. The position, corresponding to the notch, of the imitated cornea is used for imitating a surgical incision, and the imitated surgical incision is used for taking out the imitated matrix lens. In a full femtosecond surgery learning stage, repeated practice can be performed through the practice model, so that the hand flexibility is improved, and surgery related complications possibly caused by unskilled operation are greatly reduced; and meanwhile, consumables required by the exercise model in use are low in price and easy to obtain, so that the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a full femtosecond surgery practice model. Background Art

[0002] Small incision lenticule extraction (SMILE), also known as LASIK, is a new type of corneal refractive surgery. Its flapless, minimally invasive, safe, effective, and stable procedure has gained increasing favor among patients and surgeons, making it a mainstream procedure in refractive surgery. During surgery, proficiency in separating and removing the lenticule affects the occurrence of complications during LASIK.

[0003] When practicing all-femtosecond surgeries, pig eyes or 3D femtosecond training models are often used. However, pig eyes are expensive to practice with, and 3D femtosecond training models also present challenges such as difficulty and high cost in production. Using human eyes for training in actual surgeries can easily lead to serious complications.

[0004] Therefore, there is an urgent need to design a surgical training model for separating and removing lenses to reduce the cost of practice. Utility Model Content

[0005] In view of this, the purpose of the present invention is to provide a femtosecond surgery training model, which aims to solve the technical problem of high cost in the prior art when practicing femtosecond surgery.

[0006] The utility model provides a full femtosecond surgery practice model, comprising a simulated eyeball, a simulated cornea, a simulated stromal lens and a cover ring. The cover ring is provided with a notch, which disconnects the cover ring. The simulated cornea and the simulated stromal lens are sequentially stacked on the simulated eyeball. The cover ring is arranged on the simulated cornea to press the simulated cornea and the simulated stromal lens tightly. The position on the simulated cornea corresponding to the notch is used for a simulated surgical incision, and the simulated surgical incision is used to remove the simulated stromal lens.

[0007] Furthermore, a limiting structure is provided between the cover ring and the imitation eyeball, and the limiting structure is used to limit the relative position of the cover ring and the imitation eyeball in the circumferential direction.

[0008] Furthermore, the limiting structure includes a plurality of limiting protrusions and limiting recesses, wherein the plurality of limiting protrusions are provided on the cover ring, and the limiting recesses are opened on the imitation eyeball. The limiting protrusions correspond to the limiting recesses, and the limiting protrusions are inserted into the limiting recesses to limit the relative position of the cover ring and the imitation eyeball in the circumferential direction.

[0009] Furthermore, the limiting protrusion is a cone structure.

[0010] Furthermore, a handle is provided on the cover ring, and the handle is used to imitate a surgical instrument for fixing the eyeball in actual surgery.

[0011] Furthermore, an alarm device is provided between the cover ring and the imitation eyeball, and the alarm device is used to monitor whether the length of the imitation surgical incision in the radial direction is greater than the length of the notch.

[0012] Furthermore, the alarm device includes a pressure sensor, a power supply and a buzzer. The pressure sensor is provided on the imitation eyeball, and the pressure sensor corresponds to the edge of the end of the cover ring. The edge of the end of the cover ring is used to be crimped onto the pressure sensor. The pressure sensor is electrically connected to the power supply and the buzzer. The pressure of the pressure sensor is reduced to conduct the power supply and the buzzer, and the buzzer is used to sound an alarm.

[0013] Beneficial Effects: The present invention provides a femtosecond surgery practice model, comprising a simulated eyeball, a simulated cornea, a simulated stromal lens, and a cover ring. The simulated cornea and the simulated stromal lens are sequentially stacked on the simulated eyeball. The cover ring is disposed on the simulated cornea to compress the simulated cornea and the simulated stromal lens. The position on the simulated cornea corresponding to the notch is used for a simulated surgical incision, which is used to remove the simulated stromal lens. During the learning stage of femtosecond surgery, repeated practice with the practice model of the present invention can increase manual dexterity, greatly reducing surgical complications that may be caused by unskilled operation. Furthermore, the consumables required for the practice model of the present invention are inexpensive and easily available, thus reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0016] Figure 3 A schematic diagram of the structure of the cover ring being placed on the simulated cornea;

[0017] Figure 4 for Figure 3 Schematic diagram of the structure in the AA direction;

[0018] Figure 5 Schematic diagram of the structure of the cover ring;

[0019] Figure 6 This is a structural diagram of the alarm device.

[0020] In the figure: 1. Imitation eyeball; 2. Imitation cornea; 3. Imitation matrix lens; 4. Cover ring; 41. Notch; 5. Imitation surgical incision; 6. Limiting structure; 61. Limiting protrusion; 62. Limiting concave hole; 7. Handle; 8. Alarm device; 81. Pressure sensor; 82. Power supply; 83. Buzzer. DETAILED DESCRIPTION

[0021] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] See also Figures 1 to 6 The present invention provides a full-scale femtosecond surgery practice model, comprising a simulated eyeball 1, a simulated cornea 2, a simulated stromal lens 3 and a cover ring 4. The cover ring 4 is provided with a notch 41, which disconnects the cover ring 4. The simulated cornea 2 and the simulated stromal lens 3 are sequentially stacked on the simulated eyeball 1. The cover ring 4 is arranged on the simulated cornea 2 to press the simulated cornea 2 and the simulated stromal lens 3 tightly. The position on the simulated cornea 2 corresponding to the notch 41 is used for a simulated surgical incision 5, which is used to remove the simulated stromal lens 3.

[0023] In actual surgery, the doctor will use a femtosecond laser machine to transmit laser pulses according to the pattern set by the doctor, performing various targeted cuts on the cornea. The laser focus produces a light explosion, which vaporizes the corneal tissue, forming expanded blisters and CO2 bubbles. The blisters and bubbles are absorbed by the corneal tissue, thereby separating the corneal tissue. The femtosecond laser cuts a lens in the corneal stroma, and then makes a tiny incision of about 2-4mm at the edge of the cornea, through which the lens is removed. The practice model of this application can reproduce the above surgical process and can be practiced repeatedly.

[0024] Specifically, the imitation eyeball 1 is a straight flat-bottomed hemisphere with a diameter of 28 mm. In order to improve the training effect, the appearance color of the imitation eyeball 1 is similar to the white sclera and brown iris of the eyeball, and the outermost layer is attached with a transparent protective layer. The cover ring 4 is a ring body with an outer diameter of 12 mm and an inner ring diameter of 8 mm. Preferably, the bottom surface of the cover ring 4 fits the arc surface of the imitation eyeball 1. The imitation cornea 2 and the imitation matrix lens 3 can use disposable PE high-viscosity material as the simulation material. Preferably, PE material is an environmentally friendly and non-toxic material with low price and easy to purchase. It has self-adhesiveness and high transparency, which is similar to the stratified state of the cornea after laser scanning. The length of the cover plate is set to 2.8 mm, which is a common habit of existing surgeons. Repeated practice with an incision of this size can form more accurate hand muscle memory.

[0025] In actual practice, it is only necessary to open the cover ring 4, put in the simulated cornea 2 and the simulated matrix lens 3, and cover the cover plate to practice.

[0026] In one feasible embodiment, a limiting structure 6 is provided between the cover ring 4 and the imitation eyeball 1. The limiting structure 6 is used to limit the relative position of the cover ring 4 and the imitation eyeball 1 in the circumferential direction. This embodiment prevents the cover ring 4 from rotating relative to the imitation eyeball 1 during practice. Optionally, both the cover ring 4 and the imitation eyeball 1 are provided with a plurality of magnetic blocks, and the number of magnetic blocks on the cover ring 4 and the number of magnetic blocks on the imitation eyeball 1 are the same and correspond. During practice, the cover ring 4 is adsorbed on the imitation eyeball 1 to secure it.

[0027] Preferably, the limiting structure 6 includes a plurality of limiting protrusions 61 and limiting recesses 62. The limiting protrusions 61 are provided on the cover ring 4, and the limiting recesses 62 are provided on the imitation eyeball 1. The limiting protrusions 61 correspond to the limiting recesses 62 and are inserted into the limiting recesses 62 to limit the relative position of the cover ring 4 and the imitation eyeball 1 in the circumferential direction. Preferably, four limiting protrusions 61 are provided.

[0028] Furthermore, the limiting protrusion 61 is a cone structure. The cone structure has a self-guiding property, which can help the limiting protrusion 61 align with the central axis of the limiting recess 62, reduce deviation and friction during the insertion process, and quickly achieve positioning.

[0029] In one feasible embodiment, the cover ring 4 is provided with a handle 7, which is used to simulate the surgical instruments used to secure the eyeball during actual surgery. In actual surgery, the eyeball is clamped and secured using microsurgical instruments such as forceps. The practice model cover plate of this application is provided with a handle 7, which can simulate the techniques used to secure the eyeball during actual surgery without the expense of additional microsurgical instruments such as forceps. The handle 7 is 1.5 cm long and cylindrical, forming a 130° angle with the cover plate.

[0030] In one feasible embodiment, an alarm device 8 is provided between the cover ring 4 and the simulated eyeball 1. This device is used to monitor whether the radial length of the simulated surgical incision 5 is greater than the length of the notch 41. In actual surgery, the incision length is generally maintained between 2 and 4 mm. Excessive incision length (i.e., incision tearing) may increase the risk of postoperative complications, such as corneal edema and intraocular inflammation. These complications may have long-term effects on the patient's vision and eye health. During surgery, if an incision tear occurs, the surgeon may need to take additional measures to address the tear, which may increase the difficulty and complexity of the procedure and prolong the operation. Therefore, during practice, it is important to pay attention to the size of the simulated surgical incision 5. This practice model is equipped with an alarm device 8 that can monitor the simulated state of tearing in the simulated surgical incision 5, allowing practitioners to master techniques to avoid incision tearing during practice.

[0031] Specifically, refer to Figure 4 and Figure 6 The alarm device 8 includes a pressure sensor 81, a power supply 82, and a buzzer 83. The pressure sensor 81 is mounted on the simulated eyeball 1, corresponding to the edge of the cover ring 4. The edge of the cover ring 4 is pressed against the pressure sensor 81, and the pressure sensor 81 is electrically connected to the power supply 82 and the buzzer 83. A reduction in pressure in the pressure sensor 81 electrically connects the power supply 82 and the buzzer 83, which then sounds an alarm. Because the cover ring 4 is mounted on the simulated cornea 2, the simulated surgical incision 5 is made on the simulated cornea 2. If the simulated surgical incision 5 is excessively long (i.e., torn) due to improper operation, the cover ring 4 will be lifted. Since the edge of the cover ring 4 is closest to the simulated surgical incision 5, it is lifted first. Therefore, whether the edge of the cover ring 4 is lifted can be used to determine whether the simulated surgical incision 5 has been torn. In this embodiment, when the edge of the cover ring 4 is lifted, the pressure in the pressure sensor 81 decreases. The pressure sensor 81 acts as a signal transmission medium, converting the pressure change into an electrical signal that is then transmitted to the circuit, thereby connecting the power supply 82 and the buzzer 83. The power supply 82 provides power to the buzzer 83, which then sounds an alarm to warn the operator of improper operation. Specifically, the output of the pressure sensor 81 is connected to the corresponding input port of the microcontroller, while the buzzer 83 is connected to the output port of the microcontroller via a driver circuit, which is a transistor switching circuit. The power supply 82 provides power to the pressure sensor 81 and the buzzer 83.

[0032] It will be apparent to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present application is defined by the appended claims, not the foregoing description, and all variations within the meaning and scope of the appended claims are intended to be included herein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0033] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A femtosecond surgery training model, characterized by: The invention comprises an imitation eyeball (1), an imitation cornea (2), an imitation matrix lens (3) and a cover ring (4); a notch (41) is provided on the cover ring (4); the notch (41) disconnects the cover ring (4); the imitation cornea (2) and the imitation matrix lens (3) are sequentially stacked on the imitation eyeball (1); the cover ring (4) is covered on the imitation cornea (2) to press the imitation cornea (2) and the imitation matrix lens (3); the position on the imitation cornea (2) corresponding to the notch (41) is used for an imitation surgical incision (5); and the imitation surgical incision (5) is used to remove the imitation matrix lens (3).

2. The femtosecond surgery training model according to claim 1, characterized in that: A limiting structure (6) is provided between the cover ring (4) and the imitation eyeball (1), and the limiting structure (6) is used to limit the relative position of the cover ring (4) and the imitation eyeball (1) in the circumferential direction.

3. The femtosecond surgery training model according to claim 2, characterized in that: The limiting structure (6) includes a plurality of limiting protrusions (61) and limiting recesses (62), wherein the plurality of limiting protrusions (61) are provided on the cover ring (4), and the limiting recesses (62) are provided on the imitation eyeball (1). The limiting protrusions (61) correspond to the limiting recesses (62), and the limiting protrusions (61) are inserted into the limiting recesses (62) to limit the relative position of the cover ring (4) and the imitation eyeball (1) in the circumferential direction.

4. The femtosecond surgery training model according to claim 3, characterized in that: The limiting protrusion (61) is a cone structure.

5. The femtosecond surgery training model according to claim 1, characterized in that: A handle (7) is provided on the cover ring (4), and the handle (7) is used to imitate a surgical instrument for fixing an eyeball in actual surgery.

6. The femtosecond surgery training model according to claim 1, characterized in that: An alarm device (8) is provided between the cover ring (4) and the imitation eyeball (1), and the alarm device (8) is used to monitor whether the length of the imitation surgical incision (5) in the radial direction is greater than the length of the notch (41).

7. The femtosecond surgery training model according to claim 6, characterized in that: The alarm device (8) comprises a pressure sensor (81), a power supply (82) and a buzzer (83). The pressure sensor (81) is provided on the imitation eyeball (1). The pressure sensor (81) corresponds to the edge of the end of the cover ring (4). The edge of the end of the cover ring (4) is used to be pressed onto the pressure sensor (81). The pressure sensor (81) is electrically connected to the power supply (82) and the buzzer (83). The pressure of the pressure sensor (81) is reduced to conduct the power supply (82) and the buzzer (83). The buzzer (83) is used to sound an alarm.

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