Eyeball fixing eye cup for ophthalmologic operation

Abstract

The invention provides an eyeball fixing eye cup for an ophthalmologic operation, and relates to the technical field of ophthalmologic operation auxiliary equipment, the eyeball fixing eye cup comprises a negative pressure eye cup, the negative pressure eye cup comprises an operation cup used for the operation operation and an adsorption cup used for being adsorbed on an eyeball of a patient under negative pressure, the operation cup and the adsorption cup are funnel-shaped, and the narrow opening side of the operation cup is communicated with the narrow opening side of the adsorption cup; the eye cup pressure dynamic adjusting device comprises a pressure sensor, a micro air pump and a closed-loop control system, the micro air pump is connected with an adsorption cup through a silica gel negative pressure hose and used for generating negative pressure, the pressure sensor is used for collecting the negative pressure value in a negative pressure eye cup, and the closed-loop control system is connected with the high-precision pressure sensor and the micro air pump. And the dynamic control module is used for dynamically controlling the micro air pump according to the negative pressure value acquired by the pressure sensor in real time so as to dynamically adjust the negative pressure value. The system can adapt to eye conditions of different patients and dynamic requirements in the operation, the microsurgery flexibility is improved, and the ophthalmologic operation risk is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ophthalmic surgery auxiliary equipment, in particular to an eyeball fixing eye cup for ophthalmic surgery. BACKGROUND

[0002] In the process of ophthalmic surgery, especially when performing fine operations such as fundus retinal or fundus vascular injection, corneal repair and the like, the slight movement of the eyeball of the patient can seriously affect the surgical effect, and even cause the failure of the surgery, so the head and eyeball of the patient need to be fixed during the surgery.

[0003] Current ophthalmic surgery (such as vitrectomy, retinal repair) relies on an eye speculum to open the eyelid, supplemented by the manual adjustment of the head position of the patient by the doctor. The eyeball is only fixed by the voluntary gaze of the patient, and the eyeball is easily unconsciously rotated (especially in local anesthesia surgery) due to muscle fatigue and tension. Some high-end surgical procedures use negative pressure adsorption eye cups (such as corneal contact lens fixing rings), but the following shortcomings exist: (1) The control pressure of the eyeball and the eye cup cannot be dynamically adjusted: the existing eye cups mostly rely on fixed negative pressure or manual adjustment, and are prone to liquid leakage or excessive or insufficient adsorption pressure. If the patient's body position moves (such as coughing, trembling) during the surgery, the pressure cannot be monitored and compensated in real time when the sealing property of the eye cup decreases, which easily leads to excessive compression or fixation failure of the eyeball.

[0004] (2) Lack of a falling early warning mechanism: the doctor only relies on visual observation when the eye cup falls or the pressure is abnormal, and cannot actively warn of the risk of falling of the eye cup, increasing the probability of interruption or damage during the surgery.

[0005] (3) Limited instrument operation space: the existing design only simply fixes the ophthalmic examination tool, and is interfered or limited by the surgical instrument when cooperating with the ophthalmic examination tool during the surgery, affecting the precise operation of the surgical instrument.

[0006] (4) Insufficient negative pressure stability: the negative pressure cavity structure of some devices is simple, and it is difficult to maintain uniform negative pressure, leading to the deviation of the position of the eyeball. SUMMARY

[0007] Therefore, the present application provides an eyeball fixing eye cup for ophthalmic surgery to adapt to different patient eye conditions and dynamic requirements during the surgery, improve the flexibility of microsurgery, and reduce the risk of surgery.

[0008] The present application provides the following technical solutions: an eyeball fixing eye cup for ophthalmic surgery, comprising: The negative pressure eye cup includes an operating cup for surgical procedures and an adsorption cup for negative pressure adsorption onto the patient's eyeball. Both the operating cup and the adsorption cup have a funnel-shaped structure, and the diameter of the wide-mouth side of the operating cup is larger than the diameter of the wide-mouth side of the adsorption cup. The narrow-mouth side of the operating cup is connected to the narrow-mouth side of the adsorption cup, thus forming the negative pressure eye cup. An eye cup pressure dynamic adjustment device includes a high-precision pressure sensor, a miniature air pump, and a closed-loop control system. The miniature air pump is connected to the adsorption cup via a silicone negative pressure hose to generate negative pressure. The high-precision pressure sensor is used to collect the negative pressure value in the negative pressure eye cup. The closed-loop control system is connected to both the high-precision pressure sensor and the miniature air pump, and is used to dynamically control the miniature air pump based on the negative pressure value obtained in real time by the high-precision pressure sensor, so as to dynamically adjust the negative pressure value.

[0009] According to one embodiment of this application, the operating cup and the adsorption cup each have interconnected hollow cavities inside their cup walls to form an eye cup negative pressure chamber. The operating cup has a vacuum nozzle connected to the eye cup negative pressure chamber on its cup wall. The vacuum nozzle is connected to the silicone negative pressure hose. The adsorption cup has a plurality of eye cup negative pressure holes evenly distributed circumferentially on its inner side wall, which are connected to the eye cup negative pressure chamber, so that the negative pressure generated by the eye cup negative pressure holes can be adsorbed onto the patient's eyeball.

[0010] According to one embodiment of this application, the diameter of the negative pressure hole in the eye cup is 0.5-0.8 mm.

[0011] According to one embodiment of this application, the negative pressure eye cup further includes an eyeball contact silicone negative pressure strip for contacting the patient's eyeball. The eyeball contact silicone negative pressure strip is disposed around the inner side of the cup wall on the narrow opening side of the adsorption cup, so as to adsorb the patient's eyeball and the eyeball contact silicone negative pressure strip into a vacuum negative pressure cavity through the negative pressure hole of the eye cup.

[0012] According to one embodiment of this application, the cross-section of the silicone negative pressure strip that contacts the eyeball is wedge-shaped, and the surface that contacts the patient's eyeball is curved to fit the curvature of the patient's eyeball.

[0013] According to one embodiment of this application, the negative pressure eye cup further includes an eyelid silicone contact layer, and the eyelid silicone contact layer is provided at the positions on the outer wall of the adsorption cup and the outer wall of the operation cup for contact with the patient's eyelid.

[0014] According to one embodiment of this application, the cup body of the operating cup includes a first cup segment of 3 / 4 and a second cup segment of 1 / 4. The side of the first cup segment is connected to the side of the second cup segment to form the cup body of the operating cup, and the diameter of the second cup segment is larger than the diameter of the first cup segment.

[0015] According to one embodiment of this application, it further includes an eye cup bracket for fixing to the side of the patient's bed. The eye cup bracket is provided with a limiting groove, and the outer wall of the operating cup of the negative pressure eye cup is provided with an auxiliary buckle. The negative pressure eye cup is fixedly installed on the eye cup bracket through the limiting groove and the auxiliary buckle.

[0016] According to one embodiment of this application, the wide-mouth diameter of the operating cup is at least twice the wide-mouth diameter of the adsorption cup.

[0017] According to one embodiment of this application, the depth of the operating cup is at least 5 times the depth of the adsorption cup.

[0018] Compared with the prior art, the beneficial effects that can be achieved by at least one of the above-mentioned technical solutions adopted in the embodiments of this specification include at least the following: The embodiments of this invention solve the problems of unstable pressure of existing eye cups, easy dislodgement of eye cups, limited operation of surgical instruments, and high costs through dynamic pressure adjustment, intelligent early warning, structural optimization and material innovation. They avoid the risk of intraoperative pressure instability of adsorption eye cups, improve the success rate of ophthalmic surgery, and are suitable for ophthalmic ultrasound UBM examination, minimally invasive surgery and other scenarios, and have significant clinical application value. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the eyeball fixation cup for ophthalmic surgery according to an embodiment of the present invention; Figure 2 This is a first schematic diagram of the eyeball fixation cup in use according to an embodiment of the present invention; Figure 3 This is a second schematic diagram of the eyeball fixation cup in use according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the first structure of the negative pressure eye cup in the eyeball fixation eye cup according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the second structure of the negative pressure eye cup in the eyeball fixation eye cup according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the third structure of the negative pressure eye cup in the eyeball fixation eye cup according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the fourth structure of the negative pressure eye cup in the eyeball fixation eye cup according to an embodiment of the present invention; Among them, 1-negative pressure eye cup, 2-silicone negative pressure hose, 3-eye cup pressure dynamic adjustment device, 4-observation instrument, 5-surgical instrument, 6-eyeball, 7-vacuum nozzle, 8-auxiliary buckle, 1.1-operation cup, 1.2-eyeball contact silicone negative pressure soft strip, 1.3-eyelid silicone contact layer, 1.4-eye cup negative pressure cavity, 1.5-eyeball negative pressure cavity, 1.6-eye cup negative pressure hole. Detailed Implementation

[0021] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0022] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] like Figure 1 As shown, an embodiment of the present invention provides an eyeball fixation cup for ophthalmic surgery, comprising: The negative pressure eye cup 1 includes an operating cup 1.1 for surgical procedures and an adsorption cup for negative pressure adsorption onto the patient's eyeball. Both the operating cup 1.1 and the adsorption cup have a funnel-shaped structure, and the diameter of the wide-mouth side of the operating cup 1.1 is larger than the diameter of the wide-mouth side of the adsorption cup. The narrow-mouth side of the operating cup 1.1 is connected to the narrow-mouth side of the adsorption cup, thus forming the negative pressure eye cup 1. The eye cup pressure dynamic adjustment device 3 includes a high-precision pressure sensor, a micro air pump, and a closed-loop control system. The micro air pump is connected to the adsorption cup via a silicone negative pressure hose 2 to generate negative pressure. The high-precision pressure sensor is used to collect the negative pressure value in the negative pressure eye cup 1. The closed-loop control system is connected to the high-precision pressure sensor and the micro air pump respectively, and is used to dynamically control the micro air pump based on the negative pressure value obtained in real time by the high-precision pressure sensor to dynamically adjust the negative pressure value.

[0024] This invention optimizes the traditional narrow operating port design by redesigning the structure of the negative pressure eye cup, thus improving the flexibility of microsurgery. Furthermore, it employs a dynamic pressure adjustment device to dynamically adjust the negative pressure of the eye cup in real time, breaking through the limitations of existing fixed or manual adjustment modes. This adapts to different patients' ocular conditions and dynamic needs during surgery, filling the gap in existing devices that lack active warning capabilities. It avoids the risk of the eye cup detaching due to insufficient intraoperative pressure or damaging the patient's eyeball due to excessive pressure, significantly reducing surgical risks. In addition, this invention incorporates a detachable design for each component, balancing high-end functionality with economy, thus expanding its clinical applicability.

[0025] The eye cup for fixing the eyeball in this embodiment of the invention consists of a negative pressure eye cup 1, a silicone negative pressure tubing 2, and an eye cup pressure dynamic adjustment device 3, as follows: Figure 1 As shown.

[0026] In practice, during surgery, a sterilized negative pressure eye cup 1 is placed on the upper part of the patient's eyeball. Sterile water for examination is placed inside the eye cup, or it is placed directly on the upper part of the eyeball 6. Negative pressure is drawn from the negative pressure eye cup 1 through the silicone negative pressure tubing 2 between the negative pressure eye cup 1 and the eye cup pressure dynamic adjustment device 3 (which is dynamically adjustable and also has a dislodgement warning function). After the eyeball 6 is held in place by the suction cup, the ophthalmic surgical observation instrument 4 (UBM ophthalmic ultrasound handpiece / ophthalmic OCT lens) is placed in the operating cup 1.1 of the negative pressure eye cup 1 for examination. After locating the location of the lesion or abnormality in the patient's eyeball, the ophthalmic surgical instrument 5 (syringe / surgical forceps) is used to perform the surgery. The relationship between the ophthalmic examination equipment, the negative pressure eye cup 1, the ophthalmic surgical instruments, and the patient's eyeball 6 is as follows: Figure 2 , Figure 3 As shown, where Figure 3 This is a cross-sectional view.

[0027] The specific implementation method for dynamically adjusting the pressure is as follows: The eye cup pressure dynamic adjustment device 3 integrates a high-precision pressure sensor and a miniature air pump: it can monitor the negative pressure value in real time, and is equipped with a miniature air pump to dynamically adjust the negative pressure based on the pressure data fed back by the sensor.

[0028] Closed-loop feedback system: Through a closed-loop control system, the data collected by the high-precision pressure sensor is compared with the preset safe pressure range, and the micro air pump is automatically controlled to maintain the pressure stable within the set range. The eyecup pressure dynamic adjustment device 3 has a built-in pressure feedback circuit board that provides real-time feedback on the eyecup vacuum pressure and is equipped with an alarm for abnormal operating conditions, such as triggering an alarm when the eyecup pressure is abnormal. The device is equipped with a human-machine interface, an emergency stop button, and a self-test button. The human-machine interface displays the pressure feedback data of the vacuum eyecup via the built-in pressure feedback circuit board, and allows adjustment of the vacuum eyecup pressure. The emergency stop knob serves as a safety measure to stop the device in an emergency; pressing it allows manual adjustment of the device and release of the eyecup pressure. The self-test button checks the device's status after power-on.

[0029] Adaptable to different eye conditions: The system can dynamically adjust the pressure according to the individual differences of the patient (such as eyeball hardness and surgical type) to avoid eyeball damage or fixation failure caused by excessive or insufficient pressure.

[0030] In one embodiment of the present invention, hollow cavities that communicate with each other are respectively formed inside the walls of the operating cup 1.1 and the adsorption cup to form an eye cup negative pressure chamber 1.4. A vacuum nozzle 7 communicating with the eye cup negative pressure chamber 1.4 is provided on the wall of the operating cup 1.1. The vacuum nozzle 7 is connected to the silicone negative pressure hose 2. A plurality of eye cup negative pressure holes 1.6 communicating with the eye cup negative pressure chamber 1.4 are uniformly formed on the inner circumferential side of the adsorption cup wall to adsorb onto the patient's eyeball 6 through the negative pressure generated by the eye cup negative pressure holes 1.6.

[0031] In specific implementation, the silicone negative pressure hose 2 and the vacuum nozzle 7 are detachably connected. This embodiment has a modular design (such as a detachable negative pressure chamber and a dynamic adjustment device) to support repeated sterilization and use. The eye cup can be manufactured using injection molding to reduce manufacturing costs. The detachable concept combined in this embodiment balances high-end functionality and economy, expanding the scope of clinical application.

[0032] In order to control the pressure evenly, in this embodiment, the diameter of the negative pressure hole of the eye cup is preferably 0.5-0.8mm.

[0033] To ensure the effectiveness of negative pressure adsorption and reduce damage to the patient's eyeball, in one embodiment of the present invention, the negative pressure eye cup 1 further includes an eyeball contact silicone negative pressure strip 1.2 for contacting the patient's eyeball 6. The eyeball contact silicone negative pressure strip 1.2 is disposed around the inner side of the cup wall on the narrow side of the adsorption cup, so as to adsorb the patient's eyeball 6 and the eyeball contact silicone negative pressure strip 1.2 into a vacuum eyeball negative pressure cavity 1.5 through the negative pressure hole 1.6 of the eye cup.

[0034] In practice, the part of the negative pressure eye cup 1 that contacts the eyeball 6 is made of silicone to avoid damaging the patient's cornea. Before the operation, the negative pressure eye cup 1 is operated with negative pressure by the eye cup pressure dynamic adjustment device 3. The negative pressure generated by the eye cup and the eye cup pressure dynamic adjustment device 3 reaches the negative pressure chamber 1.4 inside the eye cup through the silicone negative pressure hose 2 and the vacuum suction nozzle 7. The negative pressure chamber 1.5 between the eyeball and the silicone negative pressure soft strip 1.2 in contact with the eyeball is drawn into a vacuum negative pressure chamber through the negative pressure hole 1.6 of the eye cup, so that the eye cup and the eyeball are in close contact. In one embodiment of the present invention, the cross-section of the eye-contact silicone negative pressure strip 1.2 is wedge-shaped, and the surface in contact with the patient's eyeball is curved to fit the curvature of the patient's eyeball. In this embodiment, the wedge-shaped structure of the eye-contact silicone negative pressure strip 1.2 is more suitable for conforming to the curvature of the eyeball, thus ensuring the vacuum effect of the eyeball negative pressure cavity 1.5.

[0035] Since the suction cup of the negative pressure eye cup 1 is attached to the patient's eyeball, and the patient's eyelid will come into contact with the outer wall of the negative pressure eye cup 1, in order to avoid damage to the patient's eyelid, in one embodiment of the present invention, the negative pressure eye cup 1 further includes an eyelid silicone contact layer 1.3. The eyelid silicone contact layer 1.3 is provided on the outer wall of the suction cup and the outer wall of the operating cup 1.1 at the position for contact with the patient's eyelid.

[0036] This embodiment uses silicone materials in contact with the eyeball, such as the silicone negative pressure strip 1.2 for eyeball contact and the silicone contact layer 1.3 for the eyelid. Medical-grade ultra-soft silicone (Shore hardness A20-30) is selected, and the surface microporous design enhances adsorption and reduces friction damage. Based on the application of silicone, this embodiment further optimizes the material properties and structural compatibility to reduce postoperative discomfort.

[0037] To facilitate the operation of the observation instrument 4 and surgical instrument 5 during surgery, in one embodiment of the present invention, the operating cup 1.1 comprises a first cup segment of 3 / 4 and a second cup segment of 1 / 4. The side of the first cup segment connects with the side of the second cup segment to form the cup body of the operating cup 1.1, and the diameter of the second cup segment is larger than that of the first cup segment. In this embodiment, the design of the operating cup 1.1 uses the second cup segment of 1 / 4 as a flared channel to expand the operating angle and space of the surgical instruments, avoid collision between the instruments and the eye cup, and facilitate the simultaneous use of the observation instrument 4 and the surgical instrument 5 through the operating cup 1.1. For example, the UBM ophthalmic ultrasound handle / ophthalmic OCT lens used as the observation instrument 4 can be placed in the first cup segment of 3 / 4 for use, while the surgical instrument 5, such as a syringe / surgical forceps, can be inserted into the cup through the second cup segment of 1 / 4 for operation. This ensures that the observation instrument 4 and the surgical instrument 5 do not interfere with each other when used simultaneously, improving the flexibility and convenience of the surgical operation.

[0038] In one embodiment of the present invention, an eye cup bracket for fixing to the side of the patient's bed is also included. The eye cup bracket is provided with a limiting groove, and the outer wall of the negative pressure eye cup 1.1 is provided with an auxiliary buckle 8. The negative pressure eye cup 1 is fixedly installed on the eye cup bracket through the limiting groove and the auxiliary buckle 8.

[0039] In specific implementation, the negative pressure eye cup 1 consists of a vacuum nozzle 7, an auxiliary buckle 8, an eyeball contact silicone negative pressure strip 1.2, an eyelid silicone contact layer 1.3, an eye cup negative pressure cavity 1.4, and an eye cup negative pressure hole 1.6, as follows. Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, where Figure 6 This is a cross-sectional view of the inside of the negative pressure eye cup 1.

[0040] In one embodiment of the present invention, the wide-mouth diameter of the operating cup 1.1 is at least twice the wide-mouth diameter of the adsorption cup. The depth of the operating cup 1.1 is at least five times the depth of the adsorption cup.

[0041] This invention integrates a pressure sensor and a miniature air pump into a dynamic pressure adjustment device for the eye cup. A closed-loop feedback system monitors and adjusts the negative pressure value in real time, dynamically adjusting the eye cup pressure to ensure it remains within a safe range. This overcomes the limitations of existing fixed or manual adjustment modes, adapting to different patients' ocular conditions and dynamic intraoperative needs. This invention also embeds a displacement sensor, pressure sensor, or pressure surge monitoring module at the edge of the eye cup. An alarm is triggered when the adsorption force suddenly drops or the position shifts, filling the gap in existing devices that lack proactive warnings and significantly reducing surgical risks. The eye cup structure of this invention features a funnel-shaped instrument operating opening, with a tapered flared channel at the top of the eye cup. This expands the operating angle and space for surgical instruments, preventing collisions between instruments and the eye cup, optimizing the traditional narrow operating port design, and improving the flexibility of microsurgery. All parts in contact with the eyeball in this invention are made of medical-grade ultra-soft silicone with a microporous surface design that enhances adsorption and reduces friction damage. Furthermore, the modular design of this invention (such as the detachable negative pressure chamber and dynamic adjustment device) supports repeated sterilization and use; the injection molding process reduces manufacturing costs; and the detachable concept combined with this invention balances high-end functionality with economy, expanding the scope of clinical application.

[0042] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An eyeball fixation cup for ophthalmic surgery, characterized in that, include: The negative pressure eye cup includes an operating cup for surgical procedures and an adsorption cup for negative pressure adsorption onto the patient's eyeball. Both the operating cup and the adsorption cup have a funnel-shaped structure, and the diameter of the wide-mouth side of the operating cup is larger than the diameter of the wide-mouth side of the adsorption cup. The narrow-mouth side of the operating cup is connected to the narrow-mouth side of the adsorption cup, thus forming the negative pressure eye cup. An eye cup pressure dynamic adjustment device includes a high-precision pressure sensor, a miniature air pump, and a closed-loop control system. The miniature air pump is connected to the adsorption cup via a silicone negative pressure hose to generate negative pressure. The high-precision pressure sensor is used to collect the negative pressure value in the negative pressure eye cup. The closed-loop control system is connected to both the high-precision pressure sensor and the miniature air pump, and is used to dynamically control the miniature air pump based on the negative pressure value obtained in real time by the high-precision pressure sensor, so as to dynamically adjust the negative pressure value.

2. The eyeball fixation cup for ophthalmic surgery according to claim 1, characterized in that, The operating cup and the adsorption cup each have interconnected hollow cavities inside their cup walls to form an eye cup negative pressure chamber. The operating cup has a vacuum nozzle connected to the eye cup negative pressure chamber on its cup wall. The vacuum nozzle is connected to the silicone negative pressure hose. The adsorption cup has multiple eye cup negative pressure holes evenly distributed around its inner circumference, which are connected to the eye cup negative pressure chamber, so that the negative pressure generated by the eye cup negative pressure holes can be adsorbed onto the patient's eyeball.

3. The eyeball fixation cup for ophthalmic surgery according to claim 2, characterized in that, The diameter of the negative pressure hole in the eye cup is 0.5-0.8 mm.

4. The eyeball fixation cup for ophthalmic surgery according to claim 2, characterized in that, The negative pressure eye cup also includes an eye contact silicone negative pressure strip for contact with the patient's eyeball. The eye contact silicone negative pressure strip is disposed around the inner side of the cup wall on the narrow side of the adsorption cup, so as to adsorb the patient's eyeball and the eye contact silicone negative pressure strip into a vacuum negative pressure cavity through the negative pressure hole of the eye cup.

5. The ophthalmic fixation cup for ophthalmic surgery according to claim 4, characterized in that, The cross-section of the silicone negative pressure strip that contacts the eyeball is wedge-shaped, and the surface that contacts the patient's eyeball is curved to fit the curvature of the patient's eyeball.

6. The eyeball fixation cup for ophthalmic surgery according to claim 1, characterized in that, The negative pressure eye cup also includes an eyelid silicone contact layer, and the eyelid silicone contact layer is provided on the outer wall of the adsorption cup and the outer wall of the operation cup at the position for contact with the patient's eyelid.

7. The ophthalmic fixation cup for ophthalmic surgery according to claim 1, characterized in that, The operating cup has a cup body comprising a first cup section of 3 / 4 and a second cup section of 1 / 4. The side of the first cup section is connected to the side of the second cup section to form the cup body of the operating cup, and the diameter of the second cup section is larger than the diameter of the first cup section.

8. The eyeball fixation cup for ophthalmic surgery according to claim 1, characterized in that, It also includes an eye cup holder for fixing to the side of the patient's bed. The eye cup holder is provided with a limiting groove, and the outer wall of the operating cup of the negative pressure eye cup is provided with an auxiliary buckle. The negative pressure eye cup is fixedly installed on the eye cup holder through the limiting groove and the auxiliary buckle.

9. The eyeball fixation cup for ophthalmic surgery according to claim 1, characterized in that, The diameter of the wide-mouth side of the operating cup is at least twice the diameter of the wide-mouth side of the adsorption cup.

10. The ophthalmic fixation cup for ophthalmic surgery according to claim 1, characterized in that, The depth of the operating cup is at least 5 times the depth of the adsorption cup.

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