CN105513476A - eye surgery training simulator - Google Patents

Abstract

The invention aims to provide an eye surgery training simulator, which can reduce the learning cost, is closer to the state of real eyes, is convenient for an operator to practice and can improve the success rate of surgery. The operation training simulator comprises: a seat body with a containing groove body; a hollow sphere which is arranged in the accommodating groove body, has a through hole at the center of the top end and can simulate the rotation of an eyeball; a thin film sheet body which covers the perforation of the hollow sphere and can simulate a front cyst membrane; a positioning sheet body which is attached to the top surface of the hollow sphere, covers the film body, is provided with a hole corresponding to the through hole and can be repeatedly attached; the positioning plug-in is arranged beside the perforation side and can limit the displacement of the capsulorhexis forceps for use; and at least one elastic component which simulates eyeball muscle, pulls the hollow sphere and can return the hollow sphere after rotating.

Description

eye surgery training simulator

technical field

The invention relates to an eye surgery training simulator, in particular to a simulator that enables ophthalmologists to practice continuous circular capsulorhexis surgery.

Background technique

The function of the eye is to provide vision by transmitting light through a transparent exterior called the cornea, and focusing the image onto the retina by a crystalline lens; the quality of the focused image is affected by many factors, including the size and shape of the eye, And the transparency of the cornea and lens; when the lens becomes cloudy or even hardened and less transparent due to aging, ultraviolet damage or other factors, it will prevent light and images from being transmitted to the retina, resulting in blurred vision, which means suffering from cataracts.

The reason that causes cataract is multiple, can't be treated with single liquid medicine, can only delay the speed that cataract carries out at best, so far, operation is the only effective cataract treatment method. In modern cataract surgery, the surgical steps are interlocking, and the success of each step will affect whether the subsequent surgical steps can be carried out smoothly; in cataract extraction [Cataract Extraction], phacoemulsification [Phaco] is currently the safest During the operation, there is a capsulorhexis action, that is, the continuous curvilinealcapsulorrhexis (hereinafter referred to as CCC) step of the anterior lens capsule, which is the first key step in the entire cataract operation, and it provides a smooth edge. The circular opening of the anterior capsule ensures the integrity of the zonular ligament of the lens and the surrounding capsule, and the stability of the intraocular lens in the capsular bag; whether it can be successfully completed will directly affect the smooth progress of the entire cataract surgery process. The surgical tool for capsulorhexis is capsulorhexis forceps or capsulorhexis forceps. Since the use of capsulorhexis forceps is better for controlling the capsule, it is more beneficial for beginners. Therefore, in the following discussion, we will use capsulorhexis forceps as the CCC. use tools.

Clinically, it is difficult to distinguish the edge of the capsulorhexis in the operation of mature and overmature senile cataract and some congenital cataracts, traumatic cataracts, nuclear cataracts, etc., so it is quite difficult to complete a standard CCC. Difficulty, this is because during cataract surgery, an incision will be made on one side of the transparent cornea for subsequent operations. With the continuous advancement of medical technology, the position of the incision has shifted from the sclera to the cornea. The size has gradually shrunk from the previous 12mm, 6mm, 3 to 3.5mm to the current 1.8 to 2.2mm, and it is difficult to perform CCC actions in such a small range.

Therefore, operators must often carry out simulation training of cataract surgery, so as to improve the success rate of CCC surgery, and the current simulation training method is mainly to perform operation training on artificial eyes or animal eyes, but this training method Not only is the cost high and the operation is inconvenient, but it also takes a long time to train to the level of being able to perform operations on patients. More importantly, after the training is completed, repeated practice and exposure are still required, otherwise CCC will suffer The success rate will still decrease, which will reduce the quality of medical treatment. If you want to train again, it will easily take up too much medical time for doctors.

Secondly, the traditional CCC training method cannot truly reflect the operation status of the patient's eyes, because the replacement eyes used in the training are artificial eyes or animal eyes [such as pig eyes]. The trainees learn the basic surgical techniques, but they cannot be applied smoothly when performing surgery on the patient's eyes later, because the human eye is affected by the eyeball muscles and rotates from time to time during the operation, but artificial eyes or animal eyes But it cannot rotate, so it is not so easy and relaxed to train to the level of performing surgery on the patient's eyes.

Because of this, the training or retraining of CCC requires the use of a large number of artificial eyes or animal eyes. If training with artificial eyes, the cost will be very high. Although the cost of training with animal eyes is low, the animal eyes are easy to smell during training. It affects the performer, and the eyes of animals are more difficult to preserve and cannot be stored for a long time.

Therefore, how to provide an eye surgery training simulator that can facilitate training applications for doctors, be reusable, reduce training costs, be easy to perform, have no storage problems, and better simulate real eyes has become an important objective. Invent the subject to be improved.

Contents of the invention

The main purpose of the present invention is to provide an eye surgery training simulator, which can reduce the learning cost, be closer to the real eye state, and allow the operator to practice conveniently, so as to improve the success rate of the operation.

In order to solve the above-mentioned problems and achieve the purpose of the present invention, the technical means of the present invention is realized in the following way. It is an eye surgery training simulator. The base is connected by a bracket in the middle; the top half of the upper part has a perforation that simulates the pupil, and the lower half is a hollow sphere that is placed in the accommodating tank and can rotate like an eyeball; it is covered on the hollow sphere Half of the top surface, and close the perforation, can simulate the anterior capsule, and can be replaced at any time; the area is larger than the film sheet, and covers the film sheet and is attached to the upper half of the hollow sphere The transparent positioning sheet on the top surface, the positioning sheet has a hole corresponding to the perforation; it is fixed on the side of the perforation of the above-mentioned hollow sphere with two pins at a close distance, and can be used for the two clips of the capsulorhexis forceps to pass through After entering, the positioning plug-in that limits the left and right displacement of the two tweezers; and at least one of its one ends is connected with the lower half of the hollow sphere, and the other end is connected with the bottom of the accommodating tank, and can simulate the eyeball muscles to provide a return force, so that the hollow The elastic component that allows the ball to return to its original position after rotation.

More preferably, the elastic component is a straight rubber band made of isoprene polymer and has elastic stretching effect.

More preferably, the elastic component is a tension spring with elastic expansion and contraction.

More preferably, the accommodating tank body is a hollow tapered tank, an upper notch is arranged above it, and a lower notch is arranged below it, the diameter of the upper notch is larger than the diameter of the lower notch, and the upper notch There is a section of equal diameter notch at the entrance.

More preferably, one end of the elastic component is connected to the center of the bottom of the hollow sphere; and the other end of the elastic component, after extending downward through the lower notch of the receiving tank, is turned upward and fixed on the outer side wall of the bottom of the accommodating tank.

More preferably, the outer wall of the bottom of the receiving tank has a small L-shaped hook, and the other end of the elastic component has several protruding links arranged at equal intervals, and any of the protruding links can be hooked on the small card. Check it.

More preferably, the other end of the elastic component is firmly pasted on the bottom outer wall of the receiving tank with a patch.

More preferably, the base further includes: at least one positioning frame connected to the side of the receiving tank for positioning the upper part of the capsulorhexis forceps; Directly below the positioning frame, there is a positioning groove for positioning the bottom of the capsulorhexis forceps.

More preferably, two positioning holes with a narrow distance are arranged beside the perforation of the hollow sphere; the positioning insert is a ㄇ-shaped rod with two prongs, and after the two prongs pass through the positioning sheet, Then insert it into the positioning hole, so that the ㄇ-shaped rod stands on the surface of the hollow sphere.

More preferably, the diameter of the perforation is 8 mm, the diameter of the hole is equal to or smaller than the diameter of the perforation, the distance between the two pins of the positioning insert is 2 to 3 mm, and the positioning insert is at the center of the perforation. The pitch of the dots is 5.5 to 7.5mm.

Compared with prior art, effect and effect of the present invention are as follows:

The first point: In the present invention, the receiving tank is used as the eye socket, the eyeball is simulated by the hollow sphere, the pupil is simulated by the perforation, the eyeball muscle is simulated by the elastic component, the anterior capsule of the eye is simulated by the thin film, and then covered by the positioning sheet The film sheet is attached to the surface of the hollow sphere, and the holes correspond to the perforations, so that an ophthalmic CCC surgery training simulator can be provided for the operator to practice continuous circular capsulorhexis surgery. It is not only easy to use, no storage problems, More importantly, it can simulate the condition of the real eye, and there will be no discrepancy between training and practice, resulting in a low success rate of surgery.

The second point: In the present invention, the displacement of the capsulorhexis forceps can be limited through the use of the positioning plug-in, and then the incision on the side of the transparent cornea can be replaced, so it is closer to the actual operation situation, and the most important thing is that the step of opening the incision can be avoided , so that the operator can easily practice continuous circular capsulorhexis, improving proficiency and success rate.

The third point: in the present invention, the cost of the overall surgical training simulator is not high, which can greatly reduce the use price. On the other hand, the part that needs to be replaced after use of the whole surgical training simulator is only the film sheet, and the positioning sheet It depends on the service life to decide whether to replace it, so the overall maintenance and training costs are reduced, which is very conducive to training promotion.

Description of drawings

Fig. 1 is the three-dimensional schematic diagram of a specific embodiment of the eye surgery training simulator of the lock provided by the present invention;

Fig. 2 is a three-dimensional exploded schematic diagram of a specific embodiment of the lock eye surgery training simulator provided by the present invention;

Fig. 3 is a schematic cross-sectional view of a specific embodiment of the eye surgery training simulator of the lock provided by the present invention;

Figure 3A is an enlarged view of symbol 3A in Figure 3;

Fig. 4 is the implementation schematic diagram when a specific embodiment of the eye surgery training simulator of the lock provided by the present invention cooperates with the capsulorhexis forceps for surgical practice;

Fig. 5 is an enlarged schematic view of the continuous annular capsulorhexis structure of a specific embodiment of the lock eye surgery training simulator provided by the present invention;

Fig. 6 is a top view implementation schematic diagram of a specific embodiment of the eye surgery training simulator of the lock provided by the present invention when it is used in surgical practice with capsulorhexis forceps;

Fig. 7 is a schematic diagram of a specific embodiment of the lock eye surgery training simulator provided by the present invention when it is used in surgical practice with capsulorhexis forceps, and a comparison implementation diagram of correct and incorrect operations;

Fig. 8 is a three-dimensional schematic view of another embodiment of the lock eye surgery training simulator provided by the present invention.

Symbol Description:

1, seat body, 11, accommodating tank body, 111, upper notch, 112, lower notch, 113, equal diameter notch, 12, positioning frame, 13, positioning groove, 14, base, 15, bracket, 16, Small hook, 2, hollow sphere, 21, perforation, 22, positioning hole, 23, small hole, 3, elastic component, 31, protruding link, 3a, one end, 3b, the other end, 4, positioning sheet, 41 , hole, 5, film body, 51, annular diaphragm, 52, annular opening, 53, positioning plug-in, 6, positioning plug-in, 100, surgical training simulator, 200, capsulorhexis forceps, A, positioning axis.

detailed description

Below according to the embodiment shown in accompanying drawing, describe in detail:

As shown in Fig. 1 to Fig. 3, a kind of eye surgery training simulator 100 is disclosed in the figure, which is mainly composed of a seat body 1, a hollow sphere 2, an elastic component 3, a positioning sheet 4, a film sheet 5, and a positioning insert It consists of 6 institutes and is implemented with 200 capsulorhexis forceps.

Above-mentioned seat body 1 comprises, upper end has containing tank body 11, has base 14 below, and is positioned at the support 15 that connects containing tank body 11 and base 14 in the middle; Holds containing tank body 11 by this support 15, so that it is positioned at proper height position , is convenient for the operator to practice; secondly, the bracket 15 can also be used as an adjustable telescopic bracket to change the height at any time to meet the needs of the operator.

The above-mentioned hollow sphere 2 has a perforation 21 simulating the pupil at the top center of its upper half, and the lower half is placed in the above-mentioned receiving tank 11, and can rotate like an eyeball in the receiving tank 11, so it can accommodate The groove body 11 is like an eye socket, and the hollow sphere 2 is like an eyeball.

Described accommodating tank body 11 is hollow tapered groove, and its top is provided with upper notch 111, and lower notch 112 is provided with, and the diameter of this upper notch 111 is greater than the diameter of lower notch 112, and the diameter of last notch 111 There is a notch 113 of equal diameter at the entrance. When the lower half of the hollow sphere 2 is placed in the receiving tank 11, the horizontal axis of the hollow sphere 2 will be located at the position of the equal-diameter notch 113, and the spheres below the horizontal axis will be in linear contact with the upper notch 111, so that Then, the hollow sphere 2 can flexibly rotate in the receiving tank 11 .

The above-mentioned film sheet 5 covers the top surface of the upper half of the above-mentioned hollow sphere 2 and closes the perforated hole 21, which can simulate the anterior capsule and can be replaced and updated at any time.

The above-mentioned positioning sheet 4 is a transparent sheet with adhesive on the bottom surface, the area is larger than the above-mentioned film sheet 5, it covers the film sheet 5 and is pasted on the top surface of the upper half of the hollow sphere 2; it also has holes corresponding to the above-mentioned perforations 21 The hole 41, the hole 41 exposes the film body 5. For the convenience of finger sticking and tearing, the positioning sheet 4 is preferably implemented in a rectangular shape, and the adhesive on the bottom surface of the positioning sheet 4 can be repeatedly torn and glued.

The above-mentioned positioning insert 6 has two prongs, and is fixed close to the side of the through-hole 21 of the above-mentioned hollow sphere 2 .

The above-mentioned elastic component 3 is at least one, one end 3a is connected to the bottom of the hollow sphere 2, and the other end 3b is connected to the bottom of the above-mentioned accommodating tank 11, which can simulate the eyeball muscles to provide a return force, so that the hollow sphere 2 can recover after rotation. back to the original position. Since there are 6 eyeball muscles in human beings, the present invention can add more as required, and the positions for setting are preferably symmetrical, such as left-right symmetrical setting, or front-back symmetrical setting.

Please refer to Fig. 4 to Fig. 5, the present invention is for the operator to practice continuous annular capsulorhexis operation, it uses hollow sphere 2 to simulate eyeball, perforation 21 to simulate pupil, elastic component 3 to simulate eyeball muscles, film sheet 5 To simulate the anterior capsule, the positioning sheet 4 is used to fix the film sheet 5; in the practice process, the film sheet 5 in the hole 41 is continuously torn circularly by the capsulorhexis forceps 200 to form a tearing membrane Sheet 51 and annular opening 52. On the whole, this surgical training simulator 100 is easy to use, and there is no storage problem. The most important point is that the hollow sphere 2 simulating the eyeball is restrained and pulled by the elastic component 3 during operation, so that it can move like a real eye. Turn back to the position, effectively simulating the condition of the real eye, making training and practice closer.

Secondly, the application of the positioning plug-in 6 can simulate the incision on one side of the transparent cornea, which is convenient for the operator to use the capsulorhexis forceps 200 for practice, so that it can be closer to the real operation situation. Because the use of the positioning insert 6 can eliminate the step of opening the incision and allow the operator to concentrate on practicing continuous circular capsulorhexis, so the proficiency and success rate of the operation can be improved.

Referring to Fig. 6, during operation, firstly, the front end of the capsulorhexis forceps 200 is introduced into the positioning insert 6, and then the film sheet 5 in the hole 41 is continuously torn circularly. In the figure above, the capsulorhexis forceps 200 will tear the film The sheet 51 is torn from right to left. In the figure below, the capsulorhexis forceps 200 tear the torn membrane 51 from left to right. Therefore, during the operation, the capsulorhexis forceps 200 must move left and right. Therefore, it is a principle not to exceed the distance between the two pins of the positioning insert 6. In other words, the capsulorhexis forceps 200 can only move between the two pins, and cannot touch any pins, and cannot push the positioning insert 6, otherwise it will make the hollow The ball 2 rotates, so that the continuous annular capsulorhexis will fail.

What Fig. 6 shows is the state diagram of correct continuous annular capsulorhexis operation, in order to require the integrity of the annular opening 52, and closer to the circle, it is necessary to avoid eyeball rotation during the operation of continuous annular capsulorhexis. The incision on the side of the transparent cornea should not be touched during the operation, because once touched, the eyeball will be moved, making the operation difficult, and in severe cases, the operation will fail and cause sequelae. Because of this, continuous circular capsulorhexis is generally required During the operation, after the capsulorhexis forceps 200 extend into the incision and touch the anterior capsule 51, the capsulorhexis forceps 200 at the incision must be used as an imaginary positioning axis A, and the positioning axis A is used to Adjust the displacement of the front end of the capsulorhexis forceps 200, and the positioning insert 6 can not only replace the incision, but also allow the operator to practice the existence of the imaginary positioning axis A, in order to smoothly perform continuous circular capsulorhexis.

In the present invention, since the operation of continuous circular tearing is not required to be the key point, in the following description, the techniques and means of how to complete continuous circular tearing will not be discussed in detail.

As shown in the upper figure of Fig. 7, the operator is using the capsulorhexis forceps 200 to perform continuous annular capsulorhexis, while the lower figure reveals an incorrect action, that is, the front end of the capsulorhexis forceps 200 touches the right pin of the positioning insert 6 and moves toward Moving to the right causes the hollow sphere 2 to rotate clockwise to the right, so the continuous circular capsulorhexis will be unsuccessful, even if the continuous circular capsulorhexis is completed, it is not considered successful; The left pin of plug-in 6 moves to the right [not shown in the figure], causing the hollow sphere 2 to rotate counterclockwise to the left, so the continuous circular capsulorhexis will be unsuccessful, even if the continuous circular capsulorhexis is completed, it is not successful. Therefore, when the hand-held capsulorhexis forceps 200 does not touch or push the positioning plug-in 6, it means that the continuous circular capsulorhexis operation has progressed, and the operator can see the progress by himself, and can complete the continuous circular capsulorhexis operation with confidence.

Please refer to Fig. 1 and Fig. 2 again, in order to facilitate the operator to store and take the capsulorhexis forceps 200, a positioning frame 12 for positioning the upper part of the capsulorhexis forceps 200 is set on the side of the above-mentioned accommodation tank body 11; and corresponding to the positioning frame 12, and is provided at the position of the above-mentioned base 14, the positioning groove 13 for positioning the bottom of the capsulorhexis forceps 200. It should be noted that the seat body 1 disclosed in the drawings is only a preferred embodiment, and there are still other different implementation examples. As shown in FIG. The positioning frame 12 positioned on the top of the capsulorhexis forceps 200 is oppositely arranged on the left and right sides of the base body 1 for positioning grooves 13 for positioning the bottom of the capsulorhexis forceps 200, and the positioning frame 12 and the positioning groove 13 are vertically symmetrically arranged. Based on the above, the number of positioning frames 12 and positioning slots 13 can also be increased to more than three, depending on the actual situation, but preferably one to four.

Secondly, the support frame 15 shown in Figure 1 is only one, and it can also be implemented in two or more, and surround the housing tank 11 at equal intervals; or, replace it with a cylindrical hollow pipe column It is also possible to implement with multiple support frames 15 .

The diameter of the above-mentioned perforation 21 is 8 mm, the hole 41 is the same size as the perforation 21, the distance between the two pins of the positioning insert 6 is 2 to 3 mm, and the distance between the positioning insert 6 and the center point of the perforation 21 is 5.5 to 7.5 mm. mm.

The above-mentioned perforation 21 is used to simulate the pupil, and the size can be closer to the actual state of the eye, and the hole 41 must be aligned with the perforation 21, so the diameter of the hole 41 is the same as that of the perforation 21, or the diameter of the hole 41 is slightly smaller than the perforation 21; and the positioning The distance between the two pins of the plug-in 6 can be changed according to the size of the incision on one side of the transparent cornea, so as to facilitate training; and the distance between the positioning plug-in 6 and the center point of the perforation 21 is a suitable distance for operation with the capsulorhexis forceps 200 .

In the present invention, the elastic component 3 is a straight strip, isoprene polymer material, and a rubber band with elastic expansion and contraction as shown in the figure; or, it is a stretch spring with elastic expansion and contraction [in the figure Not shown]; through the application of different elastic components 3, different elastic changes can be provided, and more diversified exercises can be provided to meet training needs, improve surgical proficiency, and further improve the success rate of surgery.

Among the above, the polymer material of isoprene is a material mixed with latex and rubber. It has excellent elasticity, is easy to obtain and manufacture, and is cheap. It can be added or decreased at any time to change the elasticity, so it is very suitable as a Elastic component 3 of the present invention.

Among the above, the elastic force of the stretch spring is stable, not easy to deform or deteriorate, and has a long life, so it is suitable for daily review or a large number of exercises, so as to maintain the stability of the operator's operation. Belt used elastic component3.

Please refer to Fig. 3, one end 3a of the above-mentioned elastic component 3 is connected to the center of the bottom of the hollow sphere 2; Afterwards, it is fixed on the outer wall of the bottom end of the housing tank body 11 by turning upwards. In reality, it is better to fix the other end 3b of the elastic component on the front side outer wall or the rear side outer wall of the receiving tank body 11, because when the hollow sphere 2 turns to the left or right, the tensile force on the elastic component 3 can be uniform and stable. balance.

Through the above arrangement, the rotation of the hollow sphere 2 can cooperate with the elastic feedback generated by the elastic component 3, and the hollow sphere 2 can be quickly returned to its original position; this relatively simple design method is not only close to the condition of the real eye, but also It allows the practitioners to practice and apply smoothly, and can greatly reduce the cost of practice.

When the above-mentioned elastic component 3 is a rubber band, the other end 3b connected to the bottom outer wall of the receiving tank 11 is combined in a non-fixed manner. For example, the outer wall of the bottom of the receiving tank 11 shown in FIG. 2 has an L-shaped The small hook 15, and the other end 3b of the elastic component 3 has several protruding links 31 arranged at equal intervals, and the elastic force of the elastic component 3 can be adjusted and changed at any time by hooking on the small hook 15 through the protruding links 31. Furthermore, as shown in Figure 8, the other end 3b of the elastic component 3 can also be pasted with the film 7. When the elastic force of the elastic component 3 decreases, only the other end 3b of the elastic component 3 needs to be pulled outward, and then The film 7 can be pasted and fixed, and the operation is convenient, quick and time-saving.

In the above, when the elastic component 3 is a tension spring, it can be hooked by the L-shaped small hook 15 on the outer wall of the bottom of the receiving tank 11, so that the elastic force can be adjusted at any time, and the adjustment is convenient and easy. With the help of the positioning sheet 4 that can be pasted repeatedly, the film sheet 5 can be easily installed and positioned, and it is not easy to be displaced, and the replacement of the film sheet 5 can be facilitated after use, and the positioning sheet 4 can be eliminated after use expires Renewed.

Referring to Fig. 2 again, the perforation 21 of the above-mentioned hollow sphere 2 is provided with two positioning holes 22 with a narrow distance, and the positioning insert 6 is a U-shaped bar with two pins. When the two pins pass through the positioning sheet 4, Then insert in the corresponding two positioning holes 22, and make the U-shaped rod stand on the surface of the hollow sphere 2. The setting of the aforementioned positioning hole 22 can make the positioning insert 6 easy to disassemble, so that after the positioning sheet 4 is removed, the film sheet 5 can be placed again.

The above is a detailed description of the structure, features and effects of the present invention based on the embodiments shown in the drawings. The above descriptions are only preferred embodiments of the present invention, but the present invention does not limit the scope of implementation as shown in the drawings. Modification changes consistent with the intent of the present invention shall fall within the scope of the patent of the present invention as long as they are within an equal range.

Claims (10)

1. A kind of eye surgery training simulator, is characterized in that, comprises: The upper end has a receiving tank (11), the lower part has a base (14), and the seat body (1) is connected by a bracket (15) in the middle; There is a perforation (21) at the top center of the upper part to simulate the pupil, and the lower part is a hollow sphere (2) that is placed in the accommodating tank (11) and can rotate like an eyeball; A film (5) that covers the top surface of the upper half of the hollow sphere (2) and closes the hole (21), can simulate the anterior capsule, and can be replaced at any time; The area is larger than the film sheet (5), and covers the film sheet (5) and is attached to the transparent positioning sheet (4) on the top half surface of the hollow sphere (2). The positioning sheet (4) also has a corresponding holes (41) in said perforations (21); The positioning insert (6) is fixed on the side of the perforation (21) with two pins at a close distance, and can be used for the two forceps of the capsulorhexis forceps (200) to penetrate and limit the left and right displacement of the two forceps; At least one end (3a) of one end (3a) is connected to the lower half of the hollow sphere (2), and the other end (3b) is connected to the bottom of the accommodating tank (11), and can simulate the eyeball muscle to provide a return force, so that the hollow sphere ( 2) The elastic component (3) that returns to its original position after turning. 2. The eye surgery training simulator according to claim 1, characterized in that, the elastic component (3) is a straight strip, is a polymer material of isoprene, and has a rubber band with elastic stretching effect bring. 3. The eye surgery training simulator according to claim 1, characterized in that, the elastic component (3) is a tension spring with an elastic expansion and contraction effect. 4. The eye surgery training simulator according to claim 2, characterized in that, the accommodating tank body (11) is a hollow tapered groove, an upper notch (111) is arranged above it, and a lower notch is arranged below it. A notch (112), the diameter of the upper notch (111) is larger than the diameter of the lower notch (112), and an equal-diameter notch (113) is provided at the entrance of the upper notch (111). 5. The eye surgery training simulator according to claim 4, characterized in that, one end (3a) of the elastic assembly (3) is connected to the center of the bottom of the hollow sphere (2); And the other end (3b) of the elastic component (3), after extending downwards and passing through the lower notch (112) of the accommodating tank (11), is turned upwards and fixed on the bottom of the accommodating tank (11) outer wall. 6. The eye surgery training simulator according to claim 4, characterized in that, the outer wall of the bottom of the receiving tank (11) has a small L-shaped hook (15), and the other end of the elastic component (3) (3b) There are several protruding links (31) arranged at equal intervals, and any one of the protruding links (31) can be hooked on the small hook (15). 7. The eye surgery training simulator according to claim 4, characterized in that, the other end (3b) of the elastic component (3) is pasted on the receiving tank (11) by a patch (7) bottom outer wall. 8. The eye surgery training simulator according to claim 1, characterized in that, the seat (1) also includes: At least one positioning frame (12) connected to the side of the receiving tank (11) for positioning the upper part of the capsulorhexis forceps (200); at least one is arranged at the base (14) position of the seat (1), and Corresponding to the positioning groove (13) for positioning the bottom of the capsulorhexis forceps (200) directly below the positioning frame (12). 9. eye surgery training simulator according to claim 1, is characterized in that, two positioning holes (22) with a predetermined distance are set beside the perforation (21); The ㄇ-shaped rod of two prongs, after the two prongs pass through the positioning sheet (4), are inserted into the positioning hole (22), so that the ㄇ-shaped rod is vertically arranged on the hollow sphere (2 )surface. 10. The eye surgery training simulator according to claim 1, characterized in that, the diameter of the perforation (21) is 8 mm, and the diameter of the hole (41) is equal to or smaller than the diameter (21) of the perforation , the distance between the two pins of the positioning insert (6) is 2 to 3 mm, and the distance between the positioning insert (6) and the center point of the through hole (21) is 5.5 to 7.5 mm.