Ophthalmologic operation system and control method thereof

Abstract

The invention relates to the technical field of ophthalmologic operations, in particular to an ophthalmologic operation system and a control method thereof.The system comprises an OCT imaging device used for obtaining an intraocular image of an examined eye and converting the image into intraocular pressure data; the ophthalmologic operation instrument comprises a pressure flow control unit device which is arranged in the ophthalmologic operation instrument, the signal input end of the pressure flow control unit device is connected with the OCT imaging device, and the signal output end of the pressure flow control unit device is connected with the pressure flow control unit; the control device is used for receiving the intraocular pressure data obtained by the OCT imaging device and increasing or decreasing the output power of the pressure flow control unit in the ophthalmologic operation instrument according to the image. According to the ophthalmologic operation instrument, the intraocular pressure data of the detected eye is obtained, the output power of the ophthalmologic operation instrument is adjusted according to the intraocular pressure data, so that the flow speed of the liquid flow poured into the detected eye is adjusted, the intraocular pressure of the detected eye is adjusted to be in a stable state, and the safety of an ophthalmologic operation is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of ophthalmic surgery, and in particular to an ophthalmic surgery system and a control method thereof. Background Art

[0002] In current ophthalmic surgeries, minimally invasive surgeries are used. Maintaining a certain intraocular pressure during ophthalmic surgery is the key to a successful operation. Liquid perfusion is usually used to maintain intraocular pressure. If the intraocular pressure is too high, it will cause irreversible damage to the human eye. If the intraocular pressure is too low, the eye capsule will shrink, causing contact with the surgical instrument, and there is a high probability that the eye capsule will be scratched, leading to medical accidents. Therefore, it is necessary to monitor intraocular pressure during surgery.

[0003] However, the pressure sensor is too large to be inserted directly into the wound and into the eyeball to measure the intraocular pressure. Existing surgical equipment, without exception, has a pressure measuring device connected to the rear end of the surgical instrument pipeline.

[0004] However, there is a pressure difference in the actual pipeline, especially on both sides of the small needle. The measured pressure is not the intraocular pressure itself, but only an indirect measurement. Moreover, this pressure difference changes with the change of pipeline flow. This leads to a high delay in intraocular pressure measurement when the perfusion flow changes rapidly, and the intraocular pressure cannot be effectively controlled to be stable, so the safety of ophthalmic surgery cannot be effectively guaranteed. Summary of the invention

[0005] In view of this, an object of the present invention is to provide an ophthalmic surgery system and a control method thereof, so as to monitor intraocular pressure during ophthalmic surgery to improve the safety of the surgery.

[0006] In a first aspect, an embodiment of the present invention provides an ophthalmic surgery system, comprising:

[0007] An OCT imaging device, used for acquiring an intraocular image of the eye to be inspected and converting the image into intraocular pressure data;

[0008] Ophthalmic surgical instruments, including pressure flow control units;

[0009] A control device is provided in the ophthalmic surgical instrument, wherein a signal input end thereof is connected to the OCT imaging device, and a signal output end thereof is connected to the pressure flow control unit; the control device is used to receive intraocular pressure data obtained by the OCT imaging device, and increase or decrease the output power of the pressure flow control unit in the ophthalmic surgical instrument according to the image, so as to adjust the intraocular pressure of the eye to be examined during the ophthalmic surgery;

[0010] The perfusion device is connected to the pressure flow control unit and is controlled by the control device to increase or decrease the output power of the pressure flow control unit to adjust the flow rate of the liquid perfused into the eye to be examined, thereby adjusting the intraocular pressure of the eye to be examined.

[0011] In combination with the first aspect, the intraocular pressure data includes at least one of an axial distance of the eye to be examined, an eye center cross-sectional area, or an eye volume.

[0012] In combination with the first aspect, the irrigation device is connected to the ophthalmic surgical instrument pipeline.

[0013] In combination with the first aspect, the ophthalmic surgical instrument further includes:

[0014] Surgical instrument host;

[0015] A handle is connected to the surgical instrument host.

[0016] In combination with the first aspect, the surgical instrument host includes: a signal generator, a pressure flow control unit and a human-machine interaction interface, and the signal generator, the pressure flow control unit and the human-machine interaction interface are all connected to the control device.

[0017] In conjunction with the first aspect, the perfusion device includes a perfusion needle.

[0018] In combination with the first aspect, it also includes a flow limiter, which is arranged on the pipeline connecting the irrigation device and the ophthalmic surgical instrument.

[0019] In combination with the first aspect, the OCT imaging device is connected to the control device by a circuit.

[0020] In a second aspect, the present application provides a control method for an ophthalmic surgical system, which is applied to a control device in the above-mentioned ophthalmic surgical system; the control device stores reference intraocular pressure data, the ophthalmic surgical system includes an ophthalmic surgical instrument, the ophthalmic surgical instrument includes a pressure flow control unit, and the pressure flow control unit is used to control the flow rate and flow rate of liquid flow into the eye to be examined; the method includes:

[0021] Acquiring current intraocular pressure data of the eye under examination detected by the OCT imaging device;

[0022] Calculate the difference between the current intraocular pressure data and the reference intraocular pressure data to obtain the current intraocular pressure change;

[0023] Calculating a target flow rate of the liquid flow according to the current intraocular pressure change;

[0024] The target output power of the pressure flow control unit is controlled according to the target flow rate.

[0025] In combination with the second aspect, the step of calculating the target flow rate according to the current intraocular pressure change includes:

[0026] Calculate the target flow rate according to the following formula:

[0027] F=F n-1-MQ;

[0028] Where, F is the target flow rate, F n-1 is the current flow rate; M is the control coefficient; Q is the current intraocular pressure change transmitted by the OCT imaging device.

[0029] The embodiments of the present invention bring the following beneficial effects: The present invention provides an ophthalmic surgery system and a control method thereof, the system comprising: an OCT imaging device, used to obtain an intraocular image of an eye to be inspected, and convert the image into intraocular pressure data; an ophthalmic surgery instrument, comprising a pressure flow control unit; a control device, provided on the ophthalmic surgery instrument, whose signal input end is connected to the OCT imaging device, and whose signal output end is connected to the pressure flow control unit; the control device is used to receive the intraocular pressure data obtained by the OCT imaging device, and increase or decrease the output power of the ophthalmic surgery instrument according to the image, so as to adjust the intraocular pressure of the eye to be inspected during the ophthalmic surgery;

[0030] The perfusion device is connected to the pressure flow control unit, and the pressure flow control unit is controlled by the control device to increase or decrease the output power to adjust the flow rate of the perfusion device to perfuse liquid into the eye to be inspected, thereby adjusting the intraocular pressure of the eye to be inspected.

[0031] The present application obtains intraocular pressure data of the eye to be examined and adjusts the output power of the ophthalmic surgical instrument according to the intraocular pressure data, thereby adjusting the flow rate of the liquid flow injected into the eye to be examined, so as to adjust the intraocular pressure of the eye to be examined to a stable state, thereby improving the safety of ophthalmic surgery.

[0032] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0035] Figure 1 A schematic diagram of an ophthalmic surgery system provided by an embodiment of the present invention;

[0036] Figure 2 A schematic diagram of the internal components of a surgical instrument host used in an ophthalmic surgical system provided by an embodiment of the present invention;

[0037] Figure 3 A schematic diagram of the connection between various units in a surgical instrument host, an OCT imaging device and a control device in an ophthalmic surgical system provided by an embodiment of the present invention;

[0038] Figure 4 A flow chart of a control method for an ophthalmic surgical system provided in Embodiment 1 of the present invention;

[0039] Figure 5 This is a flow chart of a control method for an ophthalmic surgical system provided in Example 2 of the present invention.

[0040] Description of reference numerals:

[0041] 1-ophthalmic surgical instrument, 101-signal generator, 102-pressure flow control unit, 103-human-machine interface, 2-OCT imaging device, 3-control device, 4-perfusion device, 5-eye to be examined. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0043] In order to facilitate the understanding of this embodiment, the technical terms designed in this application are briefly introduced below.

[0044] OCT device: (Optical Coherence Tomography) optical coherence tomography device, is an integrated high-resolution optical coherence tomography imaging device. Using the OCT imaging device to observe the subject, the intraocular pressure can be obtained by measuring data from the following three dimensions:

[0045] Axial length: Eyeball expansion will cause changes in axial length. The OCT imaging device can collect axial length data and convert it into intraocular pressure data using a predetermined formula.

[0046] Cross-section of the center of the eye: When the capsule of the eye expands, the cross-sectional area of ​​the center of the eye will change dramatically. The OCT imaging device can convert the scanned cross-sectional area into intraocular pressure data.

[0047] Intraocular volume: The OCT imaging device uses multi-section scanning to calculate changes in intraocular volume and thus obtain intraocular pressure data.

[0048] After introducing the technical terms involved in this application, the application scenarios and design concepts of the embodiments of this application are briefly introduced.

[0049] In ophthalmic surgery, maintaining a certain intraocular pressure is the key to a successful operation, because too high intraocular pressure will cause irreversible damage to the human eye. If the intraocular pressure is too low, the eye capsule will shrink, causing the eye capsule of the eye being examined to come into contact with the surgical instrument, which will most likely rupture the eye capsule and cause a medical accident. Usually, the method of fluid perfusion is used to maintain intraocular pressure to ensure a certain intraocular pressure, and the intraocular pressure needs to be monitored during the process.

[0050] Due to the large size of the pressure sensor, it is impossible to directly insert it into the wound and into the eyeball to measure the intraocular pressure of the eye being examined. In the related technology, a pressure measuring device is connected to the rear end of the pipeline of the surgical instrument, but the disadvantage is that the actual pipeline is a small needle, and there is a pressure difference on both sides. The measured pressure is not the intraocular pressure itself, but a simple measurement. There is often a high delay in controlling the flow rate of liquid perfusion according to the test results, and it cannot effectively control the stability of intraocular pressure.

[0051] Based on this, an embodiment of the present application provides an ophthalmic surgery system and a control method thereof to monitor intraocular pressure in real time and adjust the flow rate of the irrigation fluid according to the intraocular pressure data, thereby controlling the stability of intraocular pressure and improving the safety of surgery.

[0052] Example 1

[0053] In a first aspect, an embodiment of the present application provides an ophthalmic surgical system, the system comprising: an ophthalmic surgical instrument 1, an OCT imaging device 2, a control device 3 and an infusion device 4 (combined with Figure 1 shown).

[0054] The ophthalmic surgical instrument 1 includes a pressure and flow control unit 102 .

[0055] The OCT imaging device 2 is used to obtain intraocular images of the eye 5 to be inspected and convert the images into intraocular pressure data.

[0056] The control device 3 is provided in the ophthalmic surgical instrument, wherein the control device 3 can be provided inside, on the side, on the top, etc. of the ophthalmic surgical instrument 1. In this embodiment, the control device 3 is provided in combination with the ophthalmic surgical instrument 1. Figure 1As shown, the control device 3 is arranged on the top of the ophthalmic surgical instrument 1. The signal input end of the control device 3 is connected to the OCT imaging device 2, and the signal output end is connected to the pressure flow control unit in the ophthalmic surgical instrument 1; the control device 3 is used to receive the image and intraocular pressure data obtained by the OCT imaging device 2, and increase or decrease the output power of the pressure flow control unit 102 in the ophthalmic surgical instrument 1 according to the image, so as to adjust the intraocular pressure of the eye to be examined during the ophthalmic surgery.

[0057] The perfusion device 4 is connected to the pressure flow control unit 102. The pressure flow control unit 102 is controlled by the control device 3 to increase or decrease the output power to adjust the flow rate of the perfusion device 4 to perfuse the liquid into the eye to be examined, thereby adjusting the intraocular pressure of the eye to be examined.

[0058] In this embodiment, the intraocular image of the eye to be inspected 5 is obtained through the imaging principle of the OCT imaging device 2, and the intraocular pressure data is obtained based on the intraocular image. The control device 3 obtains the intraocular pressure data and determines the comparison relationship between the intraocular pressure data and a pre-stored first threshold value. If the intraocular pressure data is greater than the first threshold value, the pressure flow control unit is controlled to increase so as to inject more liquid flow into the eye to be inspected 5 through the perfusion device 4, thereby reducing the intraocular pressure of the eye to be inspected 5; if the intraocular pressure data is less than the first threshold value, the pressure flow control unit is controlled to decrease so as to inject more liquid flow into the eye to be inspected 5 through the perfusion device 4, thereby increasing the intraocular pressure of the eye to be inspected 5, so that the intraocular pressure position is within a reasonable set range, thereby ensuring the intraocular pressure of the eye to be inspected 5 during ophthalmic surgery.

[0059] In this embodiment, the ophthalmic surgery includes ophthalmic phacoemulsification surgery and ophthalmic vitrectomy surgery. In the phacoemulsification surgery system, the corresponding ophthalmic surgical instrument is the phacoemulsification surgical instrument, and the corresponding handle is the phacoemulsification handle; in the ophthalmic vitrectomy surgery, the corresponding ophthalmic surgical instrument is the vitrectomy instrument, and the corresponding handle is the vitrectomy handle.

[0060] In conjunction with the first aspect, the intraocular pressure data includes at least one of the axial distance, the center cross-sectional area, or the volume of the eye 5 to be inspected.

[0061] In combination with the first aspect, the irrigation device 4 is connected to the ophthalmic surgical instrument 1 via a pipeline.

[0062] Combination Figure 2 As shown, the surgical instrument host further includes: a signal generator 101 , a pressure flow control unit 102 and a human-machine interaction interface 103 .

[0063] Among them, the signal generator 101, the pressure flow control unit 102 and the human-machine interface 103 are all connected to the control device 3 (combined with Figure 3 shown).

[0064] Specific, combined Figure 3As shown, the signal generator 101, the pressure flow control unit 102 and the human-machine interaction interface 103 are all connected to the control device 3, and the current working parameters are sent to the control device 3. The control device 3 controls the signal generator 101, the pressure flow control unit 102 and the human-machine interaction interface 103 to perform different operations according to the current working parameters.

[0065] For example, the control device 3 receives the intraocular image and intraocular pressure data of the eye to be inspected 5 transmitted by the OCT imaging device 2, and then sends a display instruction to the human-computer interaction interface 103 and an output power reduction instruction to the pressure flow control unit 102. The human-computer interaction interface 103 displays the intraocular image of the eye to be inspected 5 in response to the control instruction, and the pressure flow control unit 102 reduces the output power of the ophthalmic surgical instrument in response to the control instruction, so as to reduce the amount of liquid injected into the eye to be inspected 5, thereby reducing the intraocular pressure of the eye to be inspected 5.

[0066] In combination with the first aspect, the perfusion device 4 includes a perfusion needle, which is in contact with the eye to be examined during ophthalmic surgery. The perfusion device 4 is connected to a device for storing liquid flow, and the flow rate of the perfusion liquid flow injected by the perfusion device 4 into the eye to be examined is adjusted by the output power of the pressure flow control unit 102.

[0067] In combination with the first aspect, a flow limiter (not shown in the figure) is further included, which is arranged on the pipeline connecting the perfusion device 4 and the ophthalmic surgical instrument 1. In this way, the flow limiter can be controlled by the control device 3 to adjust the flow rate or flow rate of the liquid perfused into the eye to be inspected 5, thereby adjusting the intraocular pressure.

[0068] In combination with the first aspect, the OCT imaging device 2 is connected to the control device 3 through a line. The speed and stability of data transmission can be guaranteed through the line connection.

[0069] In a second aspect, an embodiment of the present application provides a control method for an ophthalmic surgical system, which is applied to a control device 3 in the above-mentioned ophthalmic surgical system. The control device 3 includes a memory and a processor, the memory stores a computer program, and the processor is used to process the computer program in the memory to implement the method provided by the embodiment of the present application. A first preset threshold is also stored in the control device 3, and the first preset threshold is used to characterize the highest value of intraocular pressure in ophthalmic surgery.

[0070] Combination Figure 4 As shown, the method comprises the following steps:

[0071] S110: The processor obtains current intraocular pressure data of the eye to be inspected detected by the OCT imaging device.

[0072] S120, the processor calculates the difference between the current intraocular pressure data and the preset initial intraocular pressure data to obtain the intraocular pressure change.

[0073] S130, the processor calculates the target flow rate of the liquid flow according to the current change in intraocular pressure.

[0074] S140, the processor controls the target output power of the pressure flow control unit according to the target flow rate.

[0075] In this embodiment, after the OCT imaging device detects the intraocular image being inspected, the current intraocular pressure data of the inspected eye is obtained through data processing. Thereafter, the control device 3 calculates the target flow rate of the liquid flow according to the current intraocular pressure change, thereby adjusting the speed at which the perfusion device perfuses the liquid flow into the inspected eye by controlling the target output power of the pressure flow control unit 102, thereby obtaining the liquid flow at the target flow rate, thereby realizing the process of adjusting the intraocular pressure, and further improving the safety of ophthalmic surgery.

[0076] Specifically, step S130 of calculating the target flow rate according to the current intraocular pressure change includes:

[0077] Calculate the target flow rate according to the following formula:

[0078] F=F n-1 -MQ;

[0079] Where, F is the target flow rate, F n-1 is the current flow rate; M is the control coefficient; Q is the current intraocular pressure change transmitted by the OCT imaging device.

[0080] Prior to this, the baseline intraocular pressure data needs to be determined first. The specific determination method is:

[0081] S100: The processor periodically obtains intraocular pressure data of the eye to be inspected.

[0082] S101, the processor arranges the intraocular pressure data in chronological order to obtain a first intraocular pressure data series.

[0083] S102: The processor derives the first intraocular pressure data series to obtain a changing speed of the intraocular pressure data.

[0084] S103, the processor determines the time when the change rate of the intraocular pressure data approaches 0 as the reference time.

[0085] S104: The processor determines the intraocular pressure data at the reference time as the reference intraocular pressure data.

[0086] Specifically, step S102, the significance of taking the derivative of the first intraocular pressure data series is to obtain the change speed of the intraocular pressure data at each moment. When the change speed of the intraocular pressure data is rising, it means that the eye under examination is filling; when the change speed of the intraocular pressure data approaches 0, it means that the intraocular pressure begins to stabilize, and step S103 is executed at this time to determine the moment when the change speed of the intraocular pressure data approaches 0 as the reference moment, and further determine the reference intraocular pressure data.

[0087] In step S100, the time period for acquiring the intraocular pressure data of the eye to be inspected can be considered as a setting. In this embodiment, the setting period is 1 ms.

[0088] Example 2

[0089] In this embodiment, the control method for an ophthalmic surgery system provided in the embodiment of the present application is applied to the control device 3 in the above-mentioned ophthalmic surgery system. The control device 3 includes a memory and a processor. The memory stores a computer program. The processor is used to process the computer program in the memory to implement the method provided in the embodiment of the present application. The control device 3 also stores a first preset threshold and a second preset threshold. The first preset threshold is used to characterize the maximum value of intraocular pressure in ophthalmic surgery, and the second preset threshold is used to characterize the minimum value of intraocular pressure in ophthalmic surgery. Based on this, combined with Figure 5 As shown, the method provided in the embodiment of the present application also includes:

[0090] S210: The processor obtains current intraocular pressure data of the eye to be inspected detected by the OCT imaging device.

[0091] S220, the processor calculates the difference between the current intraocular pressure data and the preset initial intraocular pressure data to obtain the intraocular pressure change.

[0092] S230: The processor determines whether the intraocular pressure change is greater than a first preset threshold.

[0093] If so, execute step S240.

[0094] If not, execute step S250.

[0095] S240, the processor controls the pressure flow control unit to reduce the output power to reduce the intraocular pressure of the eye to be inspected.

[0096] S250: The processor determines whether the intraocular pressure change is less than a second preset threshold.

[0097] If yes, that is, the intraocular pressure change is less than the second preset threshold, step S260 is executed.

[0098] If not, that is, the intraocular pressure change is greater than or equal to the second preset threshold, step S270 is executed.

[0099] S260, the processor controls the pressure flow control unit to increase the output power to increase the intraocular pressure of the eye to be inspected.

[0100] S270: The processor controls the pressure flow control unit to maintain the current output power.

[0101] In this embodiment, the control device 3 adjusts the output power of the pressure flow control unit according to the comparison relationship between the intraocular pressure data and the first preset threshold and the second preset threshold to adjust the intraocular pressure of the eye under examination so that the intraocular pressure of the eye under examination is within a reasonable range.

[0102] Before, during and after ophthalmic surgery, a fluid flow system needs to be introduced into the eye to be examined so that the fluid can circulate fully in the eye to create an environment where the intraocular pressure is stable.

[0103] Before an ophthalmic surgery, the control device 3 on the ophthalmic surgical instrument 1 sends a signal to the OCT imaging device 2, and the OCT imaging device 2 collects intraocular pressure parameters, which include at least one of the eye axis, the cross-sectional area of ​​the eye to be examined, and the eye volume.

[0104] The OCT imaging device 2 continuously collects intraocular images of the inspected eye and converts the intraocular images into intraocular pressure parameters, finds the moment when the intraocular pressure parameters increase, and takes it as the beginning of the operation of the liquid flow system. During the process of filling the eye chamber with liquid injected into the inspected eye, the intraocular images of the inspected eye are continuously collected and converted into intraocular pressure parameters until the moment when the intraocular pressure parameters no longer change, and the intraocular pressure parameters at this moment are recorded as the reference value P, and stored in the control device 3. The threshold range of the intraocular pressure parameter changeable is calculated based on the reference value, and the threshold range is usually set to [P (1-2%), P (1+2%)]; in this embodiment, the preset value threshold range is set to [P (1-1%), P (1+1%)], that is, the first preset threshold is set to P (1+1%), and the second preset threshold is set to P (1-1%).

[0105] Then, hold the handle to insert the tool head into the eye to be inspected 5 and collect the intraocular image and intraocular pressure parameters of the eye to be inspected 5 in real time, and compare the current intraocular pressure parameters with the first preset threshold. When the current intraocular pressure parameters are greater than the first preset threshold, timely adjust the pressure flow control unit 102 to reduce the output power to reduce the liquid flow rate injected into the eye to be inspected 5, thereby reducing the intraocular pressure of the eye to be inspected 5.

[0106] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system and device described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0107] In addition, in the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0108] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc., which can store program codes.

[0109] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0110] Finally, it should be noted that the above embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art should understand that any person skilled in the art can still modify the technical solutions recorded in the above embodiments within the technical scope disclosed by the present invention, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. An ophthalmic surgical system, characterized in that: include: An OCT imaging device, used for acquiring an intraocular image of the eye to be inspected and converting the image into intraocular pressure data; Ophthalmic surgical instruments, including pressure flow control units; A control device is provided in the ophthalmic surgical instrument, wherein the signal input end thereof is connected to the OCT imaging device, and the signal output end thereof is connected to the pressure flow control unit; the control device is used to receive intraocular pressure data obtained by the OCT imaging device, and increase or decrease the output power of the pressure flow control unit in the ophthalmic surgical instrument according to the image, so as to adjust the intraocular pressure of the eye to be examined during the ophthalmic surgery; The perfusion device is connected to the pressure flow control unit, and the pressure flow control unit is controlled by the control device to increase or decrease the output power to adjust the flow rate of the perfusion device to perfuse liquid into the eye to be inspected, thereby adjusting the intraocular pressure of the eye to be inspected.

2. The system according to claim 1, characterized in that The intraocular pressure data includes at least one of an axial distance of the eye, an eye center cross-sectional area, or an eye volume of the eye to be examined.

3. The system according to claim 1, characterized in that The irrigation device is connected to the ophthalmic surgical instrument pipeline.

4. The system according to claim 1, characterized in that The ophthalmic surgical instrument further comprises: Surgical instrument host; A handle is connected to the surgical instrument host.

5. The system according to claim 4, characterized in that The surgical instrument host comprises: a signal generator, a pressure flow control unit and a human-machine interaction interface, and the signal generator, the pressure flow control unit and the human-machine interaction interface are all connected to the control device.

6. The system according to claim 1, characterized in that The perfusion device includes a perfusion needle.

7. The system according to claim 1, characterized in that It also includes a flow limiter, which is arranged on the pipeline connecting the irrigation device and the ophthalmic surgical instrument.

8. The system according to claim 1, characterized in that The OCT imaging device is connected to the control device by a circuit.

9. A control method for an ophthalmic surgical system, characterized in that: A control device used in an ophthalmic surgical system as claimed in any one of claims 1 to 8; the control device stores reference intraocular pressure data; the ophthalmic surgical system includes an ophthalmic surgical instrument, the ophthalmic surgical instrument includes a pressure flow control unit, and the pressure flow control unit is used to control the flow rate and flow rate of liquid flow into the eye to be examined; the method comprises: Acquiring current intraocular pressure data of the eye under examination detected by the OCT imaging device; Calculate the difference between the current intraocular pressure data and the reference intraocular pressure data to obtain the current intraocular pressure change; Calculating a target flow rate of the liquid flow according to the current intraocular pressure change; The target output power of the pressure flow control unit is controlled according to the target flow rate.

10. The method according to claim 9, characterized in that The step of calculating the target flow rate according to the current intraocular pressure change comprises: Calculate the target flow rate according to the following formula: F=F n-1 -MQ; Where, F is the target flow rate, F n-1 is the current flow rate; M is the control coefficient; Q is the current intraocular pressure change transmitted by the OCT imaging device.

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