Medical imaging device and intraoperative pupil monitoring system and device

Abstract

The invention relates to a medical imaging device and an intraoperative pupil monitoring system and device. The medical imaging device comprises an imaging shell, a detector and a lens unit, and the imaging shell accommodates the detector and the lens unit; the imaging shell is provided with a light source interface; the lens unit is used for receiving a first optical signal output by an external light source through the light source interface, reflecting the first optical signal to a to-be-imaged object, receiving a second optical signal reflected by the to-be-imaged object based on the first optical signal, and projecting the second optical signal to the detector; the detector is used for determining an eye image of the to-be-imaged object according to the second optical signal. By using the medical imaging device provided by the embodiment of the invention, the eye image of the to-be-imaged object can be acquired in real time.

Description

Technical Field

[0001] The present application relates to the field of medical technology, and in particular to a medical imaging device, an intraoperative pupil monitoring system and device. Background Art

[0002] Intracranial pressure is a very important indicator in neurosurgery, which often reflects the patient's condition during surgery. The most intuitive manifestation of intracranial pressure is the size of the pupil. In fact, the most common judgment method for surgeons during surgery is to open the patient's eyelids and shine a flashlight to observe the size of the pupil. If the pupil is dilated, it means that the intracranial pressure is abnormal and there is a risk.

[0003] However, when general anesthesia is performed and sterile drapes are laid during surgery, the patient's entire face or eyes are covered, and observation of the pupil cannot be carried out continuously throughout the operation, resulting in the inability to obtain the pupil size in real time. Summary of the invention

[0004] Based on this, it is necessary to provide a medical imaging device, an intraoperative pupil monitoring system and a device that can acquire eye images of the object to be imaged in real time in order to address the above technical problems.

[0005] In a first aspect, an embodiment of the present application provides a medical imaging device, including an imaging housing, a detector, and a lens unit, wherein the imaging housing accommodates the detector and the lens unit, and a light source interface is provided on the imaging housing;

[0006] A lens unit, configured to receive a first light signal outputted by an external light source through a light source interface, and reflect the first light signal onto an object to be imaged, and receive a second light signal reflected by the object to be imaged based on the first light signal, and project the second light signal onto a detector;

[0007] The detector is used to determine the eye image of the object to be imaged according to the second light signal.

[0008] In one embodiment, the lens unit includes a semi-transparent mirror, a first lens and a second lens;

[0009] A semi-transparent and semi-reflective mirror, used for receiving a first optical signal outputted by an external light source through a light source interface, and reflecting the first optical signal onto the first lens;

[0010] A first lens is used to focus the received first light signal onto the object to be imaged, receive a second light signal reflected by the object to be imaged based on the first light signal, and project the second light signal to the second lens through a semi-transparent and semi-reflective mirror;

[0011] The second lens is used to focus the received second optical signal onto the detector.

[0012] In one embodiment, the medical imaging device further includes a filter, which is disposed between the second lens and the detector and is used to filter the second light signal output by the second lens.

[0013] In one embodiment, the medical imaging device further includes a light source and an optical fiber, and the light source is connected to a light source interface on the imaging housing via the optical fiber.

[0014] In one of the embodiments, the medical imaging device further includes a controller connected to the detector;

[0015] A controller is used to obtain the eye image determined by the detector.

[0016] In a second aspect, an embodiment of the present application provides an intraoperative pupil monitoring system, comprising the medical imaging device provided in the first aspect, and the system further comprises a processor, the processor being configured to:

[0017] Acquiring an eye image output by a detector in a medical imaging device;

[0018] Determine the target pupil area according to the eye image;

[0019] The pressure state corresponding to the cranial tissue of the object to be imaged is monitored according to the target pupil area and the initial pupil area.

[0020] In one embodiment, the processor is further configured to:

[0021] Determine a change value of the pupil area according to the target pupil area and the initial pupil area;

[0022] The pressure state corresponding to the cranial tissue of the object to be imaged is determined according to the change value.

[0023] In one embodiment, the processor is further configured to:

[0024] If the change value exceeds a preset threshold, it is determined that the pressure state corresponding to the cranial tissue of the object to be imaged is abnormal, and an alarm message is output;

[0025] If the change value does not exceed the preset threshold, it is determined that the pressure state corresponding to the cranial tissue of the object to be imaged is normal.

[0026] In one embodiment, the processor is further configured to:

[0027] Binarization is performed on the eye image to obtain a binary image;

[0028] Determine the target pupil area based on the binary image.

[0029] In a third aspect, an embodiment of the present application further provides an intraoperative pupil monitoring device, the device comprising:

[0030] An acquisition module, used for acquiring an eye image output by a detector in a medical imaging device;

[0031] A determination module, used for determining a target pupil area according to an eye image;

[0032] The determination module is also used to determine the pressure state corresponding to the cranial tissue of the object to be imaged according to the target pupil area and the initial pupil area.

[0033] The above-mentioned medical imaging device, intraoperative pupil monitoring system and device, the medical imaging device includes an imaging shell, a detector and a lens unit, the imaging shell accommodates the detector and the lens unit, and a light source interface is provided on the imaging shell; the lens unit is used to receive a first light signal output by an external light source through the light source interface; and reflect the first light signal to the object to be imaged, and receive a second light signal reflected by the object to be imaged based on the first light signal, and project the second light signal to the detector; the detector is used to determine the eye image of the object to be imaged according to the second light signal. In this embodiment, the medical imaging device is set on the object to be imaged, so that the eye image of the object to be imaged can be obtained, which does not require easy observation by medical staff, can reduce waste of manpower, and the eye image of the object to be imaged is more accurate. In addition, the medical imaging device provided in this embodiment has a simple structure, and the imaging shell, the detector and the lens unit are all commonly used devices, easy to obtain, and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is a schematic structural diagram of a medical imaging device in one embodiment;

[0035] Figure 2 is a schematic structural diagram of a medical imaging device in another embodiment;

[0036] Figure 3 is a schematic structural diagram of a medical imaging device in another embodiment;

[0037] Figure 4 is a schematic structural diagram of a medical imaging device in another embodiment;

[0038] Figure 5 A schematic diagram of a monitoring method in one embodiment;

[0039] Figure 6 A schematic flow chart of the steps of a monitoring method in another embodiment;

[0040] Figure 7 A schematic flow chart of the steps of a monitoring method in another embodiment;

[0041] Figure 8 A schematic flow chart of the steps of a monitoring method in another embodiment;

[0042] Fig. 9 A schematic flow chart of the steps of a monitoring method in another embodiment;

[0043] Fig.10 is a schematic diagram of the structure of a pupil monitoring device during surgery in one embodiment;

[0044] Fig.11 FIG. 4 is a diagram showing the internal structure of a controller in one embodiment.

[0045] Description of reference numerals:

[0046] 10. Medical imaging device; 20. Object to be imaged; 100. Imaging housing; 110. Light source interface; 200. Detector; 300. Lens unit; 310. Semi-transparent and semi-reflective mirror; 320. First lens; 330. Second lens; 400. Filter; 500. Light source; 510. Optical fiber; 600. Controller. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0048] The serial numbers assigned to the components in this application, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of this application, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application 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 a limitation on this application.

[0049] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0050] First of all, before specifically introducing the technical solutions of the disclosed embodiments of the present application, the technical background or technical evolution context on which the embodiments of the present application are based is introduced. In the field of medical technology, the pressure state of intracranial tissue is a very important indicator, which can be used in various scenarios. For example, the pressure state of intracranial tissue obtained can assist in path planning; the pressure state of intracranial tissue obtained can be used as a training sample for training models, etc. In fact, the most common judgment method for surgeons during surgery is to open the eyelids of the object to be imaged and use a flashlight to observe the pupil size. If the pupil is dilated, it means that the pressure state of the intracranial tissue is abnormal and there is a risk. However, when general anesthesia has been performed and the drape has been sterilely laid during the operation, the entire face or eyes of the object to be imaged are covered, and the pupil of the object to be imaged cannot be viewed in real time throughout the operation. In this regard, the present application provides a medical imaging device.

[0051] The technical solution of the present application and how the technical solution of the present application solves the technical problem are described in detail below with specific embodiments.

[0052] In one embodiment, Figure 1 As shown, a medical imaging device 10 is provided. The medical imaging device 10 comprises an imaging housing 100, a detector 200 and a lens unit 300. The imaging housing 100 accommodates the detector 200 and the lens unit 300, and a light source interface 110 is provided on the imaging housing 100.

[0053] The imaging housing 100 includes a housing cavity, and the detector 200 and the lens unit 300 are both arranged in the housing cavity of the imaging housing 100. The size and structure of the imaging housing 100 can be set according to the size and structure of the accommodated detector 200 and the lens unit 300, and this embodiment does not limit this. The material of the imaging housing 100 can be plastic or metal, and this embodiment does not limit this, as long as its function can be achieved. A light source interface 110 is provided on the imaging housing 100, and the optical signal sent by the external light source is transmitted to the imaging housing 100 through the light source interface 110.

[0054] In an optional embodiment, the imaging housing 100 may be configured as a light-proof structure, which facilitates accurate and lossless transmission of optical signals in the imaging housing 100 .

[0055] The lens unit 300 is used to receive a first light signal output by an external light source through the light source interface 110 and reflect the first light signal onto the object 20 to be imaged, and to receive a second light signal reflected by the object 20 to be imaged based on the first light signal and project the second light signal onto the detector 200.

[0056] The lens unit 300 is located between the object to be imaged 20 and the detector 200. The lens unit 300 refers to an optical element capable of receiving, reflecting, and transmitting light signals. The material of the lens unit 300 may be plastic or glass. The present embodiment does not limit the material and structure of the lens unit 300 as long as its function can be achieved. The external light source refers to a device capable of outputting a light signal. The present embodiment does not limit the type and structure of the external light source.

[0057] The external light source emits a first light signal, which is transmitted to the lens unit 300 in the imaging housing 100 through the light source interface 110 on the imaging housing 100; after receiving the first light signal, the lens unit 300 reflects the first light signal to the object to be imaged 20. Specifically, the first light signal is reflected to the eye area of ​​the object to be imaged 20. After receiving the first light signal, the object to be imaged 20 reflects a second light signal to the lens unit 300 based on the first light signal; after receiving the second light signal, the lens unit 300 projects the second light signal to the detector 200.

[0058] The detector 200 is used to determine the eye image of the object 20 to be imaged according to the second light signal.

[0059] The second light signal is reflected by the object to be imaged 20, and the second light signal can represent the image information of the eye region of the object to be imaged 20. After receiving the second light signal, the detector 200 determines the eye image of the object to be imaged 20 according to the second light signal. That is, after receiving the second light signal reflected by the eye region of the object to be imaged 20, the detector 200 converts the second light signal into a digital signal, thereby determining the eye image of the object to be imaged 20 according to the digital signal. This embodiment does not limit the specific structure of the detector 200, as long as its function can be achieved.

[0060] In an optional embodiment, the detector 200 is a high-sensitivity detector, through which the second light signal can be received more clearly, so that a more accurate eye image of the object 20 to be imaged can be obtained.

[0061] The medical imaging device 10 provided in the embodiment of the present application includes an imaging housing 100, a detector 200 and a lens unit 300; the imaging housing 100 accommodates the detector 200 and the lens unit 300, and a light source interface 110 is provided on the imaging housing 100; the lens unit 300 is used to receive a first light signal output by an external light source through the light source interface 110; and reflect the first light signal to the object 20 to be imaged, and receive a second light signal emitted by the object 20 to be imaged based on the first light signal, and project the second light signal to the detector 200; the detector 200 is used to determine the eye image of the object 20 to be imaged according to the second light signal. In this embodiment, the medical imaging device 10 is set on the object 20 to be imaged, so that the eye image of the object 20 to be imaged can be obtained, which does not require easy observation by medical staff, can reduce waste of manpower, and the eye image of the object 20 to be imaged is more accurate. In addition, the medical imaging device 10 provided in this embodiment has a simple structure, and the imaging housing 100, the detector 200 and the lens unit 300 are all commonly used devices, which are easy to obtain and have low cost.

[0062] In one embodiment, Figure 2 As shown, the lens unit 300 includes a half mirror 310 , a first lens 320 , and a second lens 330 .

[0063] The semi-transparent mirror 310, the first lens 320 and the second lens 330 are all arranged in the accommodating cavity of the imaging housing 100. The first lens 320 is arranged on the side of the imaging housing 100 close to the object 20 to be imaged; the second lens 330 is arranged between the detector 200 and the first lens 320; and the semi-transparent mirror 310 is arranged between the first lens 320 and the second lens 330. That is, if the object 20 to be imaged is placed on a horizontal plane, the detector 200, the second lens 330, the semi-transparent mirror 310 and the first lens 320 in the medical imaging device 10 are arranged in sequence from top to bottom.

[0064] The semi-transparent and semi-reflective mirror 310 is used to receive a first light signal output by an external light source through the light source interface 110, and reflect the first light signal onto the first lens 320; the first lens 320 is used to focus the received first light signal onto the object to be imaged 20, and receive a second light signal reflected by the object to be imaged 20 based on the first light signal, and project the second light signal to the second lens 330 through the semi-transparent and semi-reflective mirror 310; the second lens 330 is used to focus the received second light signal onto the detector 200.

[0065] The semi-transparent mirror 310 is an optical element capable of transmitting and reflecting light signals, that is, a portion of the light signal sent to the semi-transparent mirror 310 will directly pass through the semi-transparent mirror 310, and the other portion of the light signal will be reflected by the semi-transparent mirror 310. The first lens 320 and the second lens 330 are both optical elements capable of focusing light signals.

[0066] The first light signal emitted by the external light source is transmitted to the semi-transparent mirror 310 after passing through the light source interface 110 on the imaging housing 100. After receiving the first light signal, the semi-transparent mirror 310 transmits a portion of the first light signal directly to the inner wall of the imaging housing 100 through the semi-transparent mirror 310, and another portion of the first light signal is reflected to the first lens 320 through the semi-transparent mirror 310. After receiving the first light signal, the first lens 320 focuses the first light signal onto the object to be imaged 20. The object to be imaged 20 reflects the second light signal based on the first light signal, and the reflected second light signal is transmitted to the semi-transparent mirror 310 through the first lens 320. After receiving the second light signal, the semi-transparent mirror 310 reflects a portion of the second light signal to the inner wall of the imaging housing 100 through the semi-transparent mirror 310, and another portion of the second light signal is directly transmitted to the second lens 330 through the semi-transparent mirror 310. After receiving the second light signal, the second lens 330 focuses the second light signal onto the detector 200 , so that the detector 200 receives the second light signal and determines the eye image of the object 20 to be imaged according to the second light signal.

[0067] The present embodiment does not limit the arrangement of the semi-transparent and semi-reflective mirror 310 in the imaging housing 100, the spacing between the semi-transparent and semi-reflective mirror 310, the first lens 320 and the second lens 330, and the spacing between the first lens 320 and the object 20 to be imaged; the spacing between the second lens 330 and the detector 200 is not limited, as long as it can be ensured that the distance between the first lens 320 and the object 20 to be imaged is consistent with the focal length of the first lens 320, and the distance between the second lens 330 and the detector 200 is consistent with the focal length of the second lens 330. In an optional embodiment, the semi-transparent and semi-reflective mirror 310 can be as follows: Figure 2 As shown, it is tilted at a certain angle between the two side walls of the imaging housing 100 .

[0068] In this embodiment, the lens unit 300 includes a semi-transparent mirror 310, a first lens 320, and a second lens 330. The first light signal sent by the external light source can be transmitted to the object to be imaged 20 through the semi-transparent mirror 310, the first lens 320, and the second lens 330, and the second light signal emitted by the object to be imaged 20 based on the first light signal can be projected to the detector 200. The structure of the lens unit 300 is simple, and the semi-transparent mirror 310, the first lens 320, and the second lens 330 are all simple devices, easy to obtain, and low in cost.

[0069] In one embodiment, Figure 3 As shown, the medical imaging device 10 further includes a filter 400 , which is disposed between the second lens 330 and the detector 200 and is used to filter the second optical signal output by the second lens 330 .

[0070] The filter 400 refers to an optical element capable of selecting a desired radiation band. The filter 400 is disposed between the second lens 330 in the lens unit 300 and the detector 200. When the second lens 330 receives the second optical signal and transmits the second optical signal to the detector 200, the second optical signal first passes through the filter 400, and the filter 400 filters the received second optical signal, and the filtered second optical signal is projected to the detector 200. This embodiment does not limit the spacing between the filter 400 and the detector 200 and the second lens 330, as long as its function can be achieved.

[0071] In this embodiment, a filter 400 is arranged between the second lens 330 and the detector 200 to filter the second light signal projected from the second lens 330 to the detector 200, thereby filtering out interference signals in the second light signal, thereby making the second light signal received by the detector 200 more accurate, and further making the eye image obtained by the detector 200 more accurate and of higher quality.

[0072] In one embodiment, Figure 4 As shown, the medical imaging device 10 further includes a light source 500 and an optical fiber 510 . The light source 500 is connected to the light source interface 110 on the imaging housing 100 via the optical fiber 510 .

[0073] The light source 500 refers to a device capable of sending light signals, and the optical fiber 510 is a fiber made of glass or plastic, and is a tool for transmitting light signals. The light source 500 is connected to the light source interface 110 on the imaging housing 100 through the optical fiber 510, that is, one end of the optical fiber 510 is connected to the light source 500, and the other end of the optical fiber 510 is connected to the light source interface 110, that is, embedded in the light source interface 110. This embodiment does not limit the type and structure of the light source 500, the length and type of the optical fiber 510, etc., as long as its function can be achieved.

[0074] The first optical signal output by the light source 500 is transmitted through the optical fiber 510 and transmitted to the lens unit 300 in the imaging housing 100 through the light source interface 110 .

[0075] In this embodiment, the medical imaging device 10 includes a light source 500 and an optical fiber 510. The light source 500 can be directly used to send a second optical signal to the lens unit 300 in the imaging shell 100 through the optical fiber 510. The light source 500 and the optical fiber 510 are easy to obtain and low in cost, making the medical imaging device 10 more practical.

[0076] In an optional embodiment, the light source 500 is an imaging light source in the near-infrared band, and the penetrating power of the light source is relatively strong, so that the first light signal can penetrate the eyelid in the eye area of ​​the object to be imaged 20 to image the eye, so that the detector 200 can determine a more accurate eye image of the object to be imaged 20. Since the eye of the object to be imaged 20 itself has the characteristics of an optical system, the pupil boundary in the eye image can be clearly determined by using the light intensity difference inside and outside the pupil of the eye, so that the obtained eye image is clearer, more accurate, and of higher quality.

[0077] Please continue to see Figure 4 In one embodiment, the medical imaging device 10 further includes a controller 600, and the controller 600 is connected to the detector 200. The controller 600 and the detector 200 may be connected by wired communication or wireless communication, which is not limited in this embodiment. The controller 600 may be a computer device, a microprocessor chip, or other device, and the computer device may be, but is not limited to, an industrial computer, a laptop computer, a smart phone, a tablet computer, etc.

[0078] In an optional embodiment, the controller 600 is connected to the detector 200 via a transmission cable.

[0079] The controller 600 is used to obtain the eye image determined by the detector 200. After the detector 200 determines the eye image according to the received second light signal, the eye image is transmitted to the controller 600. The controller 600 can receive the eye image, and the controller 600 can store the received eye image for subsequent use.

[0080] In this embodiment, the medical imaging device 10 includes a controller 600 capable of receiving an eye image of the object to be imaged 20 determined by the detector 200. The controller 600 can receive the eye image and store it to facilitate subsequent processing of the eye image, thereby improving the practicality of the medical imaging device 10.

[0081] In an optional embodiment, when the medical imaging device 10 provided by the present application is set on the object to be imaged 20, an agarose solution including urea and formamide (8-15%) is filled between the medical imaging device 10 and the eyelid of the eye of the object to be imaged 20 for refractive index matching. Among them, urea accounts for 15%-25%, and formamide accounts for 8%-15%. This can improve the absorption and scattering characteristics of the eyelid tissue to light, so that the first light signal can better penetrate the eyelid into the pupil of the eye, thereby ensuring the quality of the determined eye image of the object to be imaged 20.

[0082] In one embodiment, Figure 5 As shown, an embodiment of the present application provides a monitoring method, which applies the above Figure 1-Figure 4 The embodiment shown provides a medical imaging device. This embodiment is described by applying the method to a controller in a medical imaging device, and the steps of the method include:

[0083] Step 500: Acquire an eye image output by a detector in a medical imaging device.

[0084] The controller can obtain the eye image of the object to be imaged determined by the detector in real time, that is, after the detector determines the eye image, it directly transmits it to the controller. The controller can also periodically obtain the eye image determined by the detector, that is, after the detector determines the eye image, it first stores it in the storage device corresponding to the detector, and after a preset time period, the stored eye image is transmitted to the controller.

[0085] Step 510: Determine the target pupil area according to the eye image.

[0086] After acquiring the eye image, the controller performs recognition processing on the eye image to determine the target pupil area in the eye image. This embodiment does not limit the specific method of determining the target pupil area based on the eye image, as long as its function can be achieved.

[0087] In an optional embodiment, the controller may input the eye image into a pre-trained recognition model, perform recognition processing on the eye image through the recognition model, and determine the target pupil area in the eye image.

[0088] Step 520: monitor the pressure state corresponding to the cranial tissue of the object to be imaged according to the target pupil area and the initial pupil area.

[0089] The initial pupil area may be a pupil area of ​​the object to be imaged that is pre-stored in the controller by the user. The initial pupil area is used to represent the pupil area when the pressure state corresponding to the cranial tissue of the object to be imaged is normal.

[0090] After determining the target pupil area, the controller monitors the pressure state corresponding to the cranial tissue of the object to be imaged according to the initial pupil area and the target pupil area, that is, determines whether the pressure state of the cranial tissue of the object to be imaged represented by the target pupil area is normal or abnormal.

[0091] The monitoring method provided in the embodiment of the present application obtains an eye image output by a detector in a medical imaging device; determines a target pupil area according to the eye image; and determines the pressure state corresponding to the cranial tissue of the object to be imaged according to the target pupil area and the initial pupil area. In this embodiment, the target pupil area in the eye image is determined by the acquired eye image, and the pressure state corresponding to the cranial tissue of the object to be imaged is monitored by comparing the target pupil area with the initial pupil area. In this way, after obtaining the eye image, the pressure state corresponding to the cranial tissue of the object to be imaged can be quickly and accurately determined, thereby improving the practicality and reliability of the monitoring method.

[0092] In an optional embodiment, the controller may compare the target pupil area with the initial pupil area for similarity, and determine the pressure state corresponding to the cranial tissue of the object to be imaged based on the comparison result; if the similarity is less than a preset similarity threshold, it means that the target pupil area has hardly changed compared with the initial pupil area, and the pressure state corresponding to the cranial tissue of the object to be imaged is normal; if the similarity is greater than or equal to the preset similarity threshold, it means that the target pupil area has undergone a large change compared with the initial pupil area, and the pressure state corresponding to the cranial tissue of the object to be imaged is abnormal.

[0093] In one embodiment, Figure 6 As shown, it is related to an implementation method of determining the pressure state corresponding to the cranial tissue of the object to be imaged according to the target pupil area and the initial pupil area, and the steps of the implementation method include:

[0094] Step 600: Determine a change value of the pupil area according to the target pupil area and the initial pupil area.

[0095] After obtaining the target pupil area, the controller determines the change value of the pupil area according to the target pupil area and the initial pupil area, that is, the difference between the initial pupil area and the target pupil area. The change value of the pupil area can represent the size difference between the target pupil area and the initial pupil area. This embodiment does not limit the specific method for determining the change value of the pupil area, as long as its function can be achieved.

[0096] In an optional embodiment, the controller determines the area of ​​the target pupil area based on the target pupil area, and determines the area of ​​the initial pupil area based on the initial pupil area; calculates the difference between the area of ​​the target pupil area and the area of ​​the initial pupil area to obtain a transformation value of the pupil area.

[0097] In another optional embodiment, the controller may input the target pupil area and the initial pupil area into a pre-trained change value determination model, and the change value determination model outputs the change value of the pupil area.

[0098] Step 610: Determine the pressure state corresponding to the cranial tissue of the object to be imaged according to the change value.

[0099] After determining the change value of the pupil area, the controller determines the pressure state corresponding to the cranial tissue of the object to be imaged according to the change value.

[0100] In one embodiment, Figure 7 As shown, it is related to an implementation method of determining the pressure state corresponding to the cranial tissue of the object to be imaged according to the change value, and the steps of the implementation method include:

[0101] Step 700: If the change value exceeds a preset threshold, it is determined that the pressure state corresponding to the cranial tissue of the object to be imaged is abnormal, and an alarm message is output.

[0102] The preset threshold value can be preset by the user based on actual experience and stored in the controller. After determining the change value, the controller compares the change value with the preset threshold value to determine whether the change value exceeds the preset threshold value, that is, whether the change value is greater than or equal to the preset threshold value.

[0103] If the controller determines that the change value exceeds the preset threshold, indicating that the difference between the target pupil area and the initial pupil area is large, then it is determined that the pressure state corresponding to the cranial tissue of the object to be imaged is abnormal. When the controller determines that the pressure state corresponding to the cranial tissue is abnormal, it will output an alarm message to inform the user. The alarm message can be text or voice. The alarm message can be output by the controller or by an alarm device external to the controller, such as a buzzer. The controller sends a trigger signal to the alarm device, triggering the alarm device to send out an alarm message. This embodiment does not limit the specific device for outputting the alarm message in the form of the output alarm message, as long as its function can be achieved.

[0104] Step 710: If the change value does not exceed the preset threshold, it is determined that the pressure state corresponding to the cranial tissue of the object to be imaged is normal.

[0105] If the controller determines that the change value does not exceed the preset threshold by comparing the change value with the preset threshold, it means that the difference between the target pupil area and the initial pupil area is small, and it is determined that the pressure state corresponding to the cranial tissue of the object to be imaged is normal.

[0106] In this embodiment, the controller determines the pressure state corresponding to the cranial tissue of the object to be imaged by comparing the change value between the target pupil area and the initial pupil area with a preset threshold. This method of determining the pressure state corresponding to the cranial tissue is quick and easy to implement.

[0107] In one embodiment, Figure 8 As shown, it is related to an implementation method of determining a target pupil area according to an eye image, and the steps of the implementation method include:

[0108] Step 800: binarize the eye image to obtain a binarized image.

[0109] After obtaining the eye image, the controller performs binarization processing on the eye image to obtain a binarized image of the eye image. The controller sets the pixel value of each pixel in the eye image to 0 or 255 (0 represents black, 255 represents white) according to a preset pixel threshold.

[0110] Step 810: Determine the target pupil area according to the binarized image.

[0111] After obtaining the binarized image, the controller determines the target pupil area of ​​the binarized image. The pixel values ​​of the target pupil area in the eye image are different from those of other areas. After binarizing the eye image, the target pupil area can be distinguished from other areas. The controller can determine the target pupil area in the binarized image based on the binarized image. Normally, when the controller binarizes the eye image, the pixels of each pixel in the target pupil area are set to 0 according to a preset pixel threshold, and the pixels of each pixel in other areas are set to 255. Then, the black area in the binarized image can be determined as the target pupil area.

[0112] In this embodiment, the target pupil area can be determined based on the binary image corresponding to the eye image. This method of determining the target pupil area is quick and easy to implement, and can improve the practicality and reliability of the monitoring method.

[0113] In an optional embodiment, the controller may use an automated eye center positioning tracking algorithm to track the pupil area in the eye image. This is independent of the placement of the object to be imaged, that is, regardless of how the object to be imaged is placed, the controller can accurately determine the pupil area in the eye image.

[0114] In one embodiment, Fig. 9 As shown, a monitoring method is provided, the steps of the monitoring method comprising:

[0115] Step 900: acquiring an eye image output by a detector in a medical imaging device;

[0116] Step 910: binarize the eye image to obtain a binary image;

[0117] Step 920, determining the target pupil area according to the binary image;

[0118] Step 930: Determine a change value of the pupil area according to the target pupil area and the initial pupil area;

[0119] Step 940: If the change value exceeds a preset threshold, it is determined that the pressure state corresponding to the cranial tissue of the object to be imaged is abnormal, and an alarm message is output;

[0120] Step 950: If the change value does not exceed the preset threshold, it is determined that the pressure state corresponding to the cranial tissue of the object to be imaged is normal.

[0121] An embodiment of the present application provides a pupil monitoring system during surgery, the system comprising the above Figure 1-Figure 4 The embodiment shown provides a medical imaging device and a processor, the processor is used to perform the above Figure 5-Figure 9 The monitoring method shown.

[0122] The intraoperative pupil monitoring system provided in this embodiment includes a medical imaging device, and therefore, the intraoperative pupil monitoring system has all the beneficial effects of the medical imaging device, which will not be described in detail here. And the processor in the intraoperative pupil monitoring system is used in the steps of the monitoring method provided in the above embodiment, and therefore, the intraoperative pupil monitoring system has all the beneficial effects of the monitoring method, which will not be described in detail here.

[0123] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0124] Based on the same inventive concept, the embodiment of the present application also provides a monitoring device for implementing the monitoring method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more monitoring device embodiments provided below can refer to the limitations on the monitoring method above, and will not be repeated here.

[0125] In one embodiment, Fig.10 As shown, an intraoperative pupil monitoring device 30 is provided, comprising: an acquisition module 31 and a determination module 32, wherein:

[0126] The acquisition module 31 is used for the eye image output by the detector in the medical imaging device.

[0127] The determination module 32 is used to determine the target pupil area according to the eye image.

[0128] The determination module 32 is also used for determining the pressure state corresponding to the cranial tissue of the object to be imaged in the target pupil area and the initial pupil area.

[0129] In one embodiment, the determination module 32 includes a change value determination unit and a state determination unit. The change value determination unit is used to determine the change value of the pupil area according to the target pupil area and the initial pupil area; the state determination unit is used to determine the pressure state corresponding to the cranial tissue of the object to be imaged according to the change value.

[0130] In one embodiment, the state determination unit is specifically used to determine that the pressure state corresponding to the cranial tissue of the object to be imaged is abnormal and output an alarm message if the change value exceeds a preset threshold; if the change value does not exceed the preset threshold, determine that the pressure state corresponding to the cranial tissue of the object to be imaged is normal.

[0131] In one embodiment, the determination module 32 further includes a processing unit. The processing unit is used to perform binarization processing on the eye image to obtain a binarized image; and the determination unit is used to determine the target pupil area according to the binarized image.

[0132] Each module in the above monitoring device can be implemented in whole or in part by software, hardware or a combination thereof. Each module can be embedded in or independent of the processor in the controller in the form of hardware, or can be stored in the memory in the controller in the form of software, so that the processor can call and execute the operations corresponding to each module above.

[0133] In one embodiment, a controller is provided, whose internal structure diagram can be as follows: Fig.11As shown. The controller includes a processor, a memory, a communication interface, a display screen and an input device connected through a system bus. Among them, the processor of the controller is used to provide computing and control capabilities. The memory of the controller includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The communication interface of the controller is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be achieved through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. When the computer program is executed by the processor, a monitoring method is implemented. The display screen of the controller can be a liquid crystal display screen or an electronic ink display screen, and the input device of the controller can be a touch layer covering the display screen, or a button, a trackball or a touch pad set on the controller housing, or an external keyboard, touch pad or mouse, etc.

[0134] Those skilled in the art will understand that Fig.11 The structure shown in the figure is merely a block diagram of a partial structure related to the scheme of the present application, and does not constitute a limitation on the controller to which the scheme of the present application is applied. The specific controller may include more or fewer components than shown in the figure, or combine certain components, or have a different arrangement of components.

[0135] In one embodiment, a controller is provided, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the following steps are implemented:

[0136] Acquiring an eye image output by a detector in a medical imaging device;

[0137] Determine the target pupil area according to the eye image;

[0138] The pressure state corresponding to the cranial tissue of the object to be imaged is monitored according to the target pupil area and the initial pupil area.

[0139] In one embodiment, when the processor executes the computer program, the following steps are also implemented: determining a change value of the pupil area according to the target pupil area and the initial pupil area; and determining a pressure state corresponding to the cranial tissue of the object to be imaged according to the change value.

[0140] In one embodiment, when the processor executes the computer program, the following steps are also implemented: if the change value exceeds a preset threshold, it is determined that the pressure state corresponding to the cranial tissue of the object to be imaged is abnormal, and an alarm message is output; if the change value does not exceed the preset threshold, it is determined that the pressure state corresponding to the cranial tissue of the object to be imaged is normal.

[0141] In one embodiment, when the processor executes the computer program, the following steps are also implemented: binarizing the eye image to obtain a binarized image; and determining the target pupil area according to the binarized image.

[0142] In one embodiment, a computer readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

[0143] Acquiring an eye image output by a detector in a medical imaging device;

[0144] Determine the target pupil area according to the eye image;

[0145] The pressure state corresponding to the cranial tissue of the object to be imaged is monitored according to the target pupil area and the initial pupil area.

[0146] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: determining a change value of the pupil area according to the target pupil area and the initial pupil area; and determining a pressure state corresponding to the cranial tissue of the object to be imaged according to the change value.

[0147] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: if the change value exceeds a preset threshold, it is determined that the pressure state corresponding to the cranial tissue of the object to be imaged is abnormal, and an alarm message is output; if the change value does not exceed the preset threshold, it is determined that the pressure state corresponding to the cranial tissue of the object to be imaged is normal.

[0148] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: binarizing the eye image to obtain a binarized image; and determining the target pupil area according to the binarized image.

[0149] In one embodiment, a computer program product is provided, comprising a computer program, which, when executed by a processor, implements the following steps:

[0150] Acquiring an eye image output by a detector in a medical imaging device;

[0151] Determine the target pupil area according to the eye image;

[0152] The pressure state corresponding to the cranial tissue of the object to be imaged is monitored according to the target pupil area and the initial pupil area.

[0153] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: determining a change value of the pupil area according to the target pupil area and the initial pupil area; and determining a pressure state corresponding to the cranial tissue of the object to be imaged according to the change value.

[0154] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: if the change value exceeds a preset threshold, it is determined that the pressure state corresponding to the cranial tissue of the object to be imaged is abnormal, and an alarm message is output; if the change value does not exceed the preset threshold, it is determined that the pressure state corresponding to the cranial tissue of the object to be imaged is normal.

[0155] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: binarizing the eye image to obtain a binarized image; and determining the target pupil area according to the binarized image.

[0156] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but are not limited to this.

[0157] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0158] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A medical imaging device, characterized in that: It comprises an imaging housing, a detector and a lens unit, wherein the imaging housing accommodates the detector and the lens unit, and a light source interface is provided on the imaging housing; The lens unit is used to receive a first light signal output by an external light source through the light source interface, and reflect the first light signal onto an object to be imaged, and receive a second light signal reflected by the object to be imaged based on the first light signal, and project the second light signal onto the detector; The detector is used to determine the eye image of the object to be imaged according to the second light signal.

2. The medical imaging device according to claim 1, characterized in that: The lens unit includes a semi-transparent mirror, a first lens and a second lens; The semi-transparent and semi-reflective mirror is used to receive the first optical signal output by the external light source through the light source interface, and reflect the first optical signal onto the first lens; The first lens is used to focus the received first light signal onto the object to be imaged, receive a second light signal reflected by the object to be imaged based on the first light signal, and project the second light signal to the second lens through the semi-transparent and semi-reflective mirror; The second lens is used to focus the received second light signal onto the detector.

3. The medical imaging device according to claim 2, characterized in that: The medical imaging device further includes a filter, which is disposed between the second lens and the detector and is used to filter the second light signal output by the second lens.

4. The medical imaging device according to claim 1, characterized in that: The medical imaging device further comprises a light source and an optical fiber, and the light source is connected to the light source interface on the imaging housing via the optical fiber.

5. The medical imaging device according to any one of claims 1 to 4, characterized in that: The medical imaging device further comprises a controller, wherein the controller is connected to the detector; The controller is used to obtain the eye image determined by the detector.

6. An intraoperative pupil monitoring system, characterized in that: The medical imaging device according to any one of claims 1 to 5, wherein the system further comprises a processor, wherein the processor is configured to: Acquiring an eye image output by a detector in the medical imaging device; Determining a target pupil area according to the eye image; The pressure state corresponding to the cranial tissue of the object to be imaged is monitored according to the target pupil area and the initial pupil area.

7. The system according to claim 6, characterized in that The processor is further configured to: Determining a change value of the pupil area according to the target pupil area and the initial pupil area; The pressure state corresponding to the cranial tissue of the object to be imaged is determined according to the change value.

8. The system according to claim 7, characterized in that The processor is further configured to: If the change value exceeds a preset threshold, it is determined that the pressure state corresponding to the cranial tissue of the object to be imaged is abnormal, and an alarm message is output; If the change value does not exceed the preset threshold, it is determined that the pressure state corresponding to the cranial tissue of the object to be imaged is normal.

9. The system according to any one of claims 6 to 8, characterized in that: The processor is further configured to: Performing binarization processing on the eye image to obtain a binarized image; The target pupil area is determined according to the binarized image.

10. An intraoperative pupil monitoring device, characterized in that: The device comprises: An acquisition module, used for acquiring an eye image output by a detector in a medical imaging device; A determination module, used to determine a target pupil area according to the eye image; The determination module is further used to determine the pressure state corresponding to the cranial tissue of the object to be imaged according to the target pupil area and the initial pupil area.

Images