Intraocular pressure measurement device and system

Abstract

The application relates to an intraocular pressure measuring device and system, comprising a wearing assembly; a mounting shell movably arranged on the wearing assembly; a pressure measuring assembly detachably mounted in the mounting shell, the pressure measuring assembly comprising a pressure sensing piece, a displacement sensing piece, a contact piece, a barrel and a driving piece, the driving piece, the pressure sensing piece and the displacement sensing piece being mounted in the barrel, and the pressure sensing piece being connected with the contact piece; the contact piece is used for contacting and applying pressure to the eye of a subject, the pressure sensing piece is used for monitoring pressure information of the surface of the eye, and the displacement sensing piece is used for measuring the moving distance of the pressure sensing piece. The contact piece in the pressure measuring assembly acts on the eye of the subject, closed-eye measurement is realized, the discomfort of the subject in the measurement process is reduced, and corneal damage and stress reaction are avoided, and the application is especially suitable for children or corneal patients.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to intraocular pressure measurement equipment and systems. Background Technology

[0002] Intraocular pressure (IOP) is the pressure exerted by the contents of the eyeball (including the lens, vitreous body, uvea, and intraocular fluids (aqueous humor and blood)) on the wall of the eyeball. IOP is an important factor in maintaining the normal shape and refractive state of the eyeball, and it is also an important basis for assessing eye health and diagnosing eye diseases such as glaucoma.

[0003] Therefore, intraocular pressure (IOP) testing plays a crucial role in guiding clinical diagnosis, especially during long-term IOP monitoring, effectively improving the accuracy of clinical diagnoses. Related technologies include IOP measurement devices such as indentation tonometers, applanation tonometers, and non-contact tonometers. Applanation tonometers flatten the cornea with pressure and measure IOP based on the flattened corneal area. Non-contact tonometers direct airflow onto the subject's eyeball and determine the IOP value based on the airflow's rebound.

[0004] However, most current tonometers require patients to open their eyes or fixate, which can cause discomfort and is not suitable for patients in specific situations (such as children or patients with corneal diseases). Utility Model Content

[0005] Therefore, it is necessary to provide an intraocular pressure measurement device and system to address the issue that most tonometers require patients to open their eyes or fixate, which can cause discomfort.

[0006] This application first provides an intraocular pressure measuring device, the intraocular pressure measuring device comprising:

[0007] Wearable components;

[0008] The mounting housing is movably mounted on the wearable component;

[0009] A pressure measuring component is detachably installed within the mounting housing. The pressure measuring component includes a pressure sensor, a displacement sensor, a contact element, a cylinder, and a drive element. The drive element, the pressure sensor, and the displacement sensor are installed within the cylinder. The pressure sensor is connected to the contact element. The contact element is used to contact the subject's eye and apply pressure to the eye. The pressure sensor is used to monitor the pressure information on the surface of the eye. The displacement sensor is used to measure the movement distance of the pressure sensor.

[0010] In one embodiment, the pressure measuring assembly further includes a guide extending along a first direction, the guide being fixed inside the cylinder;

[0011] The pressure sensing element includes an adapter block and a pressure sensor. One end of the adapter block is connected to the drive element, and the other end is connected to the pressure sensor. The adapter block passes through the guide element to convert the rotational motion of the drive element into linear motion along the first direction.

[0012] In one embodiment, the contact includes a measuring probe, one end of which is connected to the pressure sensor, and the other end of which has a contact surface for contacting the eye.

[0013] In one embodiment, the displacement sensing element includes a magnet and a displacement sensor, one of the magnet and the displacement sensor being disposed on the pressure sensing element, and the other of the displacement sensor and the magnet being disposed on the cylinder. The displacement sensor is used to detect the change in the magnetic field of the magnet to obtain the moving distance of the pressure sensing element.

[0014] In one embodiment, the wearing component includes a mounting base, the mounting housing is movably disposed on the mounting base and is reciprocating relative to the mounting base in a second direction;

[0015] The mounting housing includes a cavity extending along a first direction, and the cylindrical body is used to move relative to the mounting housing along the first direction, and to fix the cylindrical body and the mounting housing after the contact member approaches or contacts the eye; the first direction is perpendicular to the second direction.

[0016] In one embodiment, the intraocular pressure measuring device further includes an adjustment component disposed on the mounting base, the adjustment component being used to connect to the mounting housing and to drive the mounting housing to move along the second direction.

[0017] In one embodiment, the adjustment assembly includes a support frame, an adjustment shaft, and two guide blocks. The support frame is fixed to the mounting housing, the adjustment shaft is rotatably mounted on the support frame, and the two guide blocks pass through the adjustment shaft. The two guide blocks are connected to the two mounting housings in a one-to-one correspondence.

[0018] The adjustment shaft has a knob at its end; the outer surface of the mounting base is also provided with a scale mark, which is located at the guide block to indicate the movement position of the mounting housing.

[0019] In one embodiment, the intraocular pressure measuring device further includes a calibration component rotatably disposed on the mounting housing; the mounting housing has a notch for allowing the calibration component to be screwed into or out of the mounting housing;

[0020] The intraocular pressure measurement device has a calibration state and a measurement state. In the calibration state, the calibration component is screwed into the mounting housing, and the adjustment component is controlled to adjust the position of the mounting housing based on the calibration component. In the measurement state, the calibration component is screwed out of the mounting housing, and the pressure measurement component is installed in the mounting housing to perform intraocular pressure measurement.

[0021] In one embodiment, the calibration component includes a connecting block and at least two positioning plates, the at least two positioning plates being spaced apart from the connecting block along a first direction, and the connecting block being rotatably disposed at a notch in the mounting housing;

[0022] The positioning piece includes a positioning identifier.

[0023] This application also provides an intraocular pressure measurement system for assessing the intraocular pressure value of a subject, the intraocular pressure measurement system including the intraocular pressure measurement device described in the above embodiments; and...

[0024] A terminal device is communicatively connected to the pressure measurement component. The terminal device is used to send a movement signal to the driving component to drive the contact element to press the eye, and to receive pressure data transmitted by the pressure sensor and displacement data transmitted by the displacement sensor to assess the intraocular pressure value of the subject through the pressure data and the displacement data.

[0025] The aforementioned intraocular pressure (IOP) measurement device and system, through the provided wearing component, allows the entire IOP measurement device to be fitted to the subject's head in a suitable manner, ensuring measurement stability. By movably mounting the housing under the wearing component, the position of the pressure-measuring component relative to the eye can be easily adjusted to achieve positive contact between the contact element and the subject's eye, improving measurement accuracy. Furthermore, in this example, the contact element in the pressure-measuring component acts on the subject's eye, enabling measurement with the eyes closed, reducing discomfort during the measurement process and avoiding corneal damage and stress reactions, making it particularly suitable for children or individuals with corneal diseases. By detachably housing the pressure-measuring component within the mounting housing, it is easy to remove the component for charging and replacement with a suitable model, and also facilitates adjustment of the relative position between the mounting housing and the wearing component after removal. In this example, the pressure-measuring component can simultaneously acquire pressure and displacement information of the subject's eye during measurement. By acquiring these two parameters and calculating the subject's intraocular pressure value, the accuracy of the measurement can be greatly improved, and the influence of individual differences on the measurement can be reduced, making it adaptable to various scenarios and user groups. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of an intraocular pressure measurement device provided according to some embodiments of this application.

[0027] Figure 2 This is a structural schematic diagram of the calibration state of an intraocular pressure measurement device provided according to some embodiments of this application.

[0028] Figure 3 This is a schematic diagram of the structure of a pressure measuring component provided according to some embodiments of this application.

[0029] Figure 4 This is a schematic diagram of the structure of a pressure measuring component from one perspective, according to some embodiments of this application.

[0030] Figure 5 for Figure 4 A schematic diagram of the cross-sectional structure of AA.

[0031] Figure 6 for Figure 5 A magnified schematic diagram of the structure at point A in the middle.

[0032] Figure 7 This is a structural schematic diagram of a pressure measuring component from another perspective, according to some embodiments of this application.

[0033] Figure 8 for Figure 7 Schematic diagram of the cross-sectional structure of BB.

[0034] Figure 9 This is a cross-sectional structural diagram of the calibration state of an intraocular pressure measuring device provided according to some embodiments of this application.

[0035] Figure 10 This is a schematic diagram of the structure of the adjustment component of an intraocular pressure measurement device provided according to some embodiments of this application.

[0036] Figure 11 This is a schematic diagram of the measurement state of an intraocular pressure measuring device provided according to some embodiments of this application.

[0037] Figure 12 This is a schematic diagram of the scale markings on the mounting base provided according to some embodiments of this application.

[0038] Figure 13 This is a schematic diagram of the structure of a wearable component provided according to some embodiments of this application.

[0039] Icon labels:

[0040] 100. Wearing component; 110. Mounting base; 111. Scale markings; 120. Shrink strap; 130. Velcro strap; 140. Adjustment knob;

[0041] 200. Install housing; 210. Lock knob;

[0042] 300. Pressure measuring component; 340. Pressure sensing element; 342. Adapter block; 341. Pressure sensor; 350. Displacement sensing element; 351. Magnet; 352. Displacement sensor; 320. Contact element; 310. Cylinder; 330. Drive element; 360. Guide element;

[0043] 400. Adjustment component; 410. Support frame; 420. Adjustment shaft; 430. Guide block; 431. Pointer; 440. Knob;

[0044] 500. Calibration component; 510. Connecting block; 520. Positioning piece; 521. Positioning mark;

[0045] 610. Guide plate; 620. Guide optical axis. Detailed Implementation

[0046] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0047] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0048] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0049] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0050] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0051] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0052] As stated in the background section, the normal range for intraocular pressure (IOP) is 10-21 mmHg, with a difference in IOP between the two eyes not exceeding 5 mmHg and a 24-hour diurnal IOP fluctuation not exceeding 8 mmHg. IOP values ​​above 21 mmHg increase the risk of glaucoma, anterior uveitis, lens dislocation, and lens dissolution, and are also seen in cardiovascular diseases such as hypertension, diabetes, and hyperlipidemia. A difference in IOP greater than 5 mmHg, or a 24-hour IOP fluctuation greater than 8 mmHg, increases the risk of acute angle-closure glaucoma, primary open-angle glaucoma, and ocular hypertension. IOP below 10 mmHg may increase the risk of ocular perforation, blunt ocular trauma, iris root detachment, ciliary body-choroid detachment, corneal ulceration, corneal fistula, and retinal vein occlusion. A difference in IOP greater than 5 mmHg, or a 24-hour IOP fluctuation greater than 8 mmHg, may result in ocular contusion.

[0053] Currently used methods for measuring intraocular pressure (IOP) include indentation tonometers, which measure IOP by pressing a weight into the central cornea. This method requires direct contact with the cornea and may cause damage or discomfort; therefore, it is rarely used in clinical ophthalmology. Applanation tonometers flatten the cornea with pressure and measure IOP based on the flattened corneal area. Non-contact tonometers are a more common clinical method, where airflow is directed onto the subject's eyeball, and the IOP value is determined by the airflow's rebound.

[0054] Intraocular pressure (IOP) measurements are easily affected by various factors, including corneal thickness, measurement time (diurnal variation), and physiological state (emotions, exercise). Therefore, when patients need to monitor IOP fluctuations independently over a long period, the ability to operate the device simply while ensuring measurement accuracy is a key indicator for evaluating IOP devices.

[0055] Among related technologies, the iCare rebound tonometer uses a probe that touches the cornea and then bounces back from the eye at different speeds. Intraocular pressure is inferred from the change in rebound speed. This device is portable, easy to operate, requires no anesthesia, and can be used at home. However, it requires consumables and necessitates adjusting the support rods extending from the top and bottom of the device to maintain the relative perpendicularity between the probe and the eye. Furthermore, its accuracy may be affected by corneal thickness and biomechanics, requiring multiple measurements to ensure accuracy. Also, open-eye measurement can cause discomfort for some people. Another technology developed by Grolman is a non-contact tonometer, consisting of an aiming system, a photoplethysmography system, and a starting system. It uses controlled airflow to rapidly flatten the central corneal region. After confirming flattening to a certain degree through an optical detection pathway, it records the time required to reach that state and then calculates the intraocular pressure. This tonometer's advantages include short examination time, avoidance of cross-infection, simple operation, and ease of use. However, its disadvantages include the need for some fixation during measurement, making it unsuitable for patients in specific situations such as children or those with certain corneal diseases. Additionally, the device is relatively large and not suitable for portable home use.

[0056] In summary, most existing tonometers require patients to open their eyes or fixate, which can cause discomfort and are not suitable for patients in specific situations (such as children or patients with corneal diseases).

[0057] To address the aforementioned problems, this application provides an intraocular pressure measurement device and system. The provided wearing component allows the entire device to be fitted to the subject's head, ensuring measurement stability. By movably mounting the housing under the wearing component, the position of the pressure measuring component relative to the eye can be adjusted to ensure proper contact between the contact element and the subject's eye, improving measurement accuracy. Furthermore, in this example, the contact element in the pressure measuring component acts on the subject's eye, enabling measurement with the eyes closed, reducing discomfort during the measurement process and avoiding corneal damage and stress reactions, making it particularly suitable for children or individuals with corneal diseases.

[0058] See Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, Figure 1 This is a schematic diagram of the overall structure of an intraocular pressure measurement device provided according to some embodiments of this application. Figure 3 This is a schematic diagram of the structure of a pressure measuring component provided according to some embodiments of this application. Figure 4 This is a schematic diagram of the structure of a pressure measuring component from one perspective, according to some embodiments of this application. Figure 5 for Figure 4 A cross-sectional view of the intraocular pressure (IOP) of a central AA. An embodiment of this application provides an IOP measuring device that, during measurement, acts on the subject's eye, for example, on the subject's eyelid, thereby enabling the measurement of the subject's IOP. The IOP measuring device may include a wearing component 100, a mounting housing 200, and a pressure measuring component 300.

[0059] The mounting housing 200 is movably mounted on the wearing component 100; the pressure measuring component 300 is detachably mounted inside the mounting housing 200. The pressure measuring component 300 includes a pressure sensor 340, a displacement sensor 350, a contact 320, a cylinder 310, and a drive 330. The drive 330, pressure sensor 340, and displacement sensor 350 are mounted inside the cylinder 310. The pressure sensor 340 is connected to the contact 320. The contact 320 is used to contact the subject's eye and apply pressure to the eye. The pressure sensor 340 is used to monitor the pressure information on the surface of the eye. The displacement sensor 350 is used to measure the movement distance of the pressure sensor 340.

[0060] It is understood that the wearing component 100 in this example can be a headband or a support-fixed type. A headband-type component could be a swimming goggle-style headband, including an elastic headband to fit different head circumferences and an adjustable nose pad to accommodate different nose bridge heights. It could also be a sleep mask-style component with built-in flexible support strips to enable measurements during sleep at night, achieving 24-hour dynamic monitoring. The support-fixed type could be a three-point support system with nose pads and temple supports on both sides, or a glasses frame design. The design of the wearing component 100 in this example is based on supporting stable measurements in multiple postures, such as sitting and lying down, and is not specifically limited. The specific structure of the wearing component 100 can be understood by referring to the following example.

[0061] Additionally, the mounting housing 200 can be slidably mounted on the wearing component 100. Specifically, it can be mounted on the wearing component 100 via a worm gear transmission structure. By rotating the worm gear with external force (e.g., manually), the worm gear drives the mounting housing 200 to move relative to the wearing component 100. The worm gear has a self-locking function, eliminating the need for additional locking after adjustment. This sliding arrangement of the mounting housing 200 relative to the wearing component 100 allows the subject to adjust its position so that it is directly opposite the pupil after wearing the wearing component 100. This ensures that the pressure measuring component 300 installed within the mounting housing 200 is directly opposite the pupil, improving the accuracy of intraocular pressure measurement. Of course, the connection method between the mounting housing 200 and the wearing component 100 is not limited to the above method; the following example can be used for understanding, and will not be elaborated further here.

[0062] Furthermore, the adjustment of the relative position of the mounting housing 200 and the pupil can be based on the subjective judgment of an external person. For example, an external person can observe the alignment between the center of the mounting housing 200 and the pupil, and thus fine-tune the mounting housing 200. Of course, to ensure that the mounting housing 200 (mainly referring to the position of the contact 320 within the mounting housing 200, usually the center of the mounting housing 200) and the pupil are aligned at the same height, an external calibration component 500 (based on the principle of three points in a straight line) can be used. The specific structure of the calibration component 500 can be understood by referring to the example below, and will not be elaborated here.

[0063] Once the mounting housing 200 is adjusted relative to the wearing component 100, that is, the center of the mounting housing 200 is directly aligned with the pupil of the subject's eye, ensuring that the end of the contact 320 is in direct contact with the eye at the pupil, the pressure measuring component 300 is pushed into the mounting housing 200. During the pushing process, attention should be paid to the position of the contact 320 relative to the eye. The movement can be stopped just as it makes contact with the eye. Then, the pressure measuring component 300 is fixed to the mounting housing 200 to ensure stability during the measurement process.

[0064] To facilitate the removal and securing of the pressure measuring assembly 300 from the mounting housing 200, the pressure measuring assembly 300 includes a cylindrical body 310. The structure of the cylindrical body 310 can be adapted to the inner cavity of the mounting housing 200; for example, it can be designed as a cylindrical structure, but there are no limitations. The cylindrical body 310 is mainly used to integrate the drive component 330, the pressure sensing component 340, the displacement sensing component 350, and the contact component 320, and to be fixedly connected to the mounting housing 200 after the pressure measuring assembly 300 is installed in place, so as to ensure the measurement stability of the pressure measuring assembly 300.

[0065] The driving component 330 can be a drive motor or a miniature airbag, which inflates to move the pressure sensor 340 and the contact component 320. Since the end of the contact component 320 needs to contact the eye, its end needs to protrude beyond the end of the cylinder 310, specifically by a predetermined distance. In this embodiment, by integrating the driving component 330, pressure sensor 340, displacement sensor 350, and contact component 320 within the cylinder 310, the structure is compact, space-saving, and simplifies the assembly process while protecting internal precision components.

[0066] It should be noted that the maximum movement threshold of the drive component 330 can be set to ensure the contact pressure between the contact component 320 and the subject's eye, and to avoid excessive pressure causing damage to the subject's eye.

[0067] The measurement principle of the pressure measuring component 300 in this embodiment is as follows: a contact 320 is positioned at the end near the eye, and is moved by external force (e.g., manual pushing or motor drive) to press on the eye. A pressure sensor 340 is provided on the contact 320 to output a pressure value while the contact 320 presses on the eye. Simultaneously, a displacement sensor 350 also responds by measuring the movement distance of the pressure sensor 340 and outputting a displacement value. The intraocular pressure (IOP) of the subject is then calculated based on the pressure and displacement values. In other words, when the contact 320 presses on the subject's eye, a larger perceived pressure for the same displacement indicates higher IOP, and vice versa. Similarly, under the same perceived pressure, a larger displacement indicates softer eye tissue and lower IOP, while a smaller displacement indicates harder eye tissue and higher IOP.

[0068] More specifically, the method of driving the subject's intraocular pressure (IOP) value through pressure and displacement values ​​can be implemented using a lookup table method. That is, the controller or actuator pre-stores multiple lists of IOP values ​​corresponding to pressure and displacement values. By inputting the pressure and displacement values ​​at the measurement point into the list, the corresponding IOP value can be obtained. Alternatively, analysis can be performed using a pressure-displacement curve. Similar to the lookup table method, the corresponding curve is found using known pressure and displacement values ​​to obtain the corresponding IOP value. A high slope in the pressure-displacement curve indicates high IOP, and a low slope indicates low IOP. The results of the lookup table method and curve analysis method can be obtained during the experimental stage by measuring IOP values ​​with a third-party tonometer and mapping them to the displacement and pressure values ​​of the IOP measuring device provided in this example. Alternatively, they can be obtained by training a neural network with a large amount of clinical data for prediction; no specific limitations are imposed here.

[0069] In this example, the pressure measuring component 300 is detachably installed in the inner cavity of the mounting housing 200. On the one hand, the pressure measuring component 300 can be removed for charging at any time, and can be replaced with a pressure measuring component 300 suitable for different models. On the other hand, before testing, the calibration component 500 needs to be installed in the mounting housing 200 to adjust the position of the mounting housing 200 relative to the pupil of the eye. Therefore, the pressure measuring component 300 needs to be removed to make room in the inner cavity of the mounting housing 200.

[0070] In this application, the provided wearing component 100 allows the entire intraocular pressure measurement device to be fitted to the subject's head, ensuring measurement stability. By movably mounting the mounting housing 200 under the wearing component 100, the position of the pressure measuring component 300 relative to the eye can be easily adjusted to achieve positive contact between the contact 320 and the subject's eye, improving measurement accuracy. Furthermore, in this example, the contact 320 in the pressure measuring component 300 acts on the subject's eye, enabling measurement with the eyes closed, reducing discomfort during the measurement process and avoiding corneal damage and stress reactions, making it particularly suitable for children or those with corneal diseases. By detachably housing the pressure measuring component 300 within the mounting housing 200, it is convenient to remove the component 300 for charging and to replace it with a suitable model. It also facilitates adjusting the relative position of the mounting housing 200 and the wearing component 100 after the pressure measuring component 300 is removed. In this example, the pressure measurement component 300 can simultaneously acquire the pressure and displacement information of the subject's eyes during the measurement process. By acquiring dual parameters, the pressure value of the subject's eyes can be calculated, which can greatly improve the accuracy of the measurement and reduce the impact of individual differences on the measurement. It has the function of adapting to a variety of scenarios and user groups.

[0071] Below, we will combine the appendix Figure 1 -Appendix Figure 13The specific structure of the intraocular pressure measurement device provided in the embodiments of this application will be described in detail.

[0072] like Figure 7 and Figure 8 As shown, Figure 7 This is a structural schematic diagram of a pressure measuring component from another perspective, according to some embodiments of this application. Figure 8 for Figure 7 A cross-sectional view of BB. To ensure the stability of the contact 320 during linear motion and to prevent rotation of its ends, in some embodiments, the pressure measuring assembly 300 further includes a guide 360 ​​extending along a first direction, the guide 360 ​​being fixed inside the cylinder 310; the pressure sensing element 340 includes an adapter block 342 and a pressure sensor 341, one end of the adapter block 342 being connected to the drive element 330 and the other end being connected to the pressure sensor 341; the adapter block 342 passes through the guide 360 ​​to convert the rotational motion of the drive element 330 into linear motion along the first direction.

[0073] Understandably, the guide 360 ​​can be a guide rod, with one or more guide rods fixed inside the cylinder 310, and the adapter block 342 adapted to pass through one or more guide rods. The end of the adapter block 342 facing the drive member 330 can be threadedly connected to the drive member 330 (e.g., the output end of a drive motor), thereby converting the rotational motion of the drive member 330 into linear motion, which in turn drives the pressure sensor 341 and the contact member 320 fixed to the other end of the adapter block 342 to move. This arrangement improves the motion accuracy of the contact member 320 and reduces measurement errors, while also preventing the contact member 320 from rotating and causing injury to the subject's eyes due to rotation.

[0074] like Figure 5 As shown, in some embodiments, the contact 320 includes a measuring probe, one end of which is connected to the pressure sensor 341, and the other end has a contact surface for contacting the eye.

[0075] Specifically, the end of the measuring probe closest to the eye can be designed as either flat or concave. A concave surface can better conform to the subject's eyeball. For example, the radius of curvature of the concave surface of the measuring probe matches the average curvature of the eyeball to distribute pressure upon contact and improve comfort. In addition, the concave surface design can provide positioning feedback and reduce eyeball movement when the measuring probe contacts the eye after it is closed.

[0076] It should be noted that the measuring probe in this example should not be too large. For example, a planar probe with a diameter of less than 6mm should be selected to ensure that the contact area is constant and to ensure the accuracy of the pressure calculation.

[0077] It should be noted that the measurement probe in this example can be an adaptive curved surface probe, which is wrapped with elastic material to automatically conform to the curvature of the eyeball and reduce local pressure.

[0078] The measurement probe provided in this example not only reduces deformation caused by excessive local pressure and reduces repeated measurements, but also improves contact stability and reduces measurement errors.

[0079] like Figure 5 and Figure 6 As shown, Figure 6 for Figure 5 An enlarged schematic diagram of the structure at point A. In some embodiments, the displacement sensing element 350 includes a magnet 351 and a displacement sensor 352. One of the magnet 351 and the displacement sensor 352 is disposed on the pressure sensing element 340, and the other of the displacement sensor 352 and the magnet 351 is disposed on the cylinder 310. The displacement sensor 352 is used to detect the change in the magnetic field of the magnet 351 to obtain the moving distance of the pressure sensing element 340.

[0080] Specifically, taking the example of fixing the displacement sensor 352 to the cylinder 310 and setting the magnet 351 on the pressure sensing element 340, during the measurement process, the magnet 351 and the pressure sensing element 340 move together and relative to the displacement sensor 352. During this process, the change in the magnetic field of the magnet 351 is detected by the displacement sensor 352 and then converted into displacement data. This non-contact displacement measurement can avoid mechanical wear, perform high-precision displacement detection, and improve the accuracy of intraocular pressure calculation.

[0081] Of course, in addition to the above-mentioned setup, the displacement sensor 352 can be set on the pressure sensing element 340, and the magnet 351 can be fixed on the cylinder 310. During the measurement process, the displacement sensor 352 and the pressure sensing element 340 move together and move relative to the magnet 351, so that the displacement sensor 352 can detect the change in the magnetic field of the magnet 351 and convert it into displacement data.

[0082] The specific structure of the magnet 351 is a single-pole magnet. For example, two single magnetic poles (N pole and S pole) are arranged at intervals along the first direction on the pressure sensing element 340. When the pressure sensing element 340 moves with the driving element 330, the position of the magnetic field formed by the pair of single magnetic poles changes. The displacement sensor 352 can obtain the moving distance of the pressure sensing element 340 by detecting the change in the magnetic field.

[0083] like Figure 2 As shown, Figure 2This is a schematic diagram of the calibration state of an intraocular pressure measurement device provided according to some embodiments of this application. In some embodiments, the wearing component 100 includes a mounting base 110, a mounting housing 200 movably disposed on the mounting base 110 and capable of reciprocating relative to the mounting base 110 in a second direction; the mounting housing 200 includes a chamber extending in a first direction, and a cylindrical body 310 is used to move relative to the mounting housing 200 in the first direction, and the cylindrical body 310 and the mounting housing 200 are fixed after the contact member 32 approaches or contacts the eye; the first direction is perpendicular to the second direction.

[0084] Specifically, the mounting base 110 includes a portion that adapts to the subject's head and face, and has an opening thereon for the subject's eyes to be exposed. The mounting base 110 in this example can be designed to fit the head and face of most subjects to ensure facial fit and orientation accuracy during wear, providing a basis for the subsequent positive contact between the contact element 320 and the eyes.

[0085] From the perspective of the examinee's orientation, the second direction is the left and right movement direction, and the first direction is the forward and backward movement direction. That is, the mounting housing 200 can be adjusted left and right relative to the mounting base 110 so that the center of the mounting housing 200 (the location of the contact 320) corresponds directly to the pupil of the eye. Of course, the vertical adjustment of the mounting housing 200 relative to the examinee can be achieved by adjusting the wearing component 100. After the mounting housing 200 is adjusted, the pressure measuring component 300 is pushed into the mounting housing 200 along the first direction and continuously moved towards the eye along the first direction until the end of the contact 320 is infinitely close to or in contact with the eye. Then, the cylinder 310 of the pressure measuring component 300 and the mounting housing 200 are fixed.

[0086] Subsequently, the drive unit 330 is activated to push the contact member 320 to move and press on the eye. During this process, the pressure sensor 340 and the displacement sensor 350 send the measured data to the control unit in real time to calculate the intraocular pressure value. In this example, the control unit can be installed on the wearing component 100 or the mounting housing 200, or used as an external device, and can be wirelessly connected to the pressure sensor 340 and the displacement sensor 350.

[0087] This setup allows the user to manually adjust the position of the pressure measuring component 300 within the mounting housing 200 and fix it in place to accommodate subjects with different orbital depths.

[0088] It should be noted that in this example, one mounting housing 200 can be set to correspond to one eye of the subject. Of course, two can also be set to correspond to both eyes of the subject. During the adjustment process, both mounting housings 200 can be adjusted at the same time to correspond to the interpupillary distance of the subject, and the intraocular pressure of both eyes of the subject can be measured at the same time.

[0089] In addition, the cylinder 310 can be fixed to the mounting housing 200 by rotating the locking knob 210 from below the mounting housing 200 to hold the cylinder 310 in place. Of course, it can also be achieved by means of snap-fit ​​or other means, and no specific restrictions are made here.

[0090] like Figure 9 and Figure 10 As shown, Figure 9 This is a cross-sectional structural diagram of the calibration state of an intraocular pressure measuring device provided according to some embodiments of this application. Figure 10 This is a schematic diagram of the structure of the adjustment assembly of an intraocular pressure measuring device according to some embodiments of this application. In some embodiments, the intraocular pressure measuring device further includes an adjustment assembly 400, which is disposed on the mounting base 110 and is used to connect to the mounting housing 200 and drive the mounting housing 200 to move in a second direction.

[0091] Specifically, the adjustment component 400 can be a mechanical structure such as gear transmission adjustment or belt transmission adjustment, or it can be an electric adjustment component 400. To reduce the weight of the intraocular pressure measurement device, a mechanical adjustment component 400 can be selected. Taking the gear transmission adjustment structure as an example, it includes a gear frame, a driving gear, a driven gear, and a rack fixed on the mounting base 110. The shaft of the driving gear is connected to the adjustment knob 140. The driven gear meshes with the driving gear, and the rack meshes with the driven gear. The rack is fixedly connected to the mounting housing 200. When the user rotates the adjustment knob 140, the driving gear rotates accordingly, driving the driven gear to rotate. The driven gear then drives the rack to move linearly, thereby causing the mounting housing 200 to move along the second direction (left and right directions).

[0092] In addition to the aforementioned mechanical structure, the structure of the adjusting component 400 can also be, for example... Figure 9 and Figure 10 As shown, in some embodiments, the adjustment assembly 400 includes a support frame 410, an adjustment shaft 420, and two guide blocks 430. The support frame 410 is fixed to the mounting housing, the adjustment shaft 420 is rotatably mounted on the support frame 410, and the two guide blocks 430 pass through the adjustment shaft 420. The two guide blocks 430 are connected to two mounting housings 200 in a one-to-one correspondence. A knob 440 is provided at the end of the adjustment shaft 420.

[0093] Specifically, the adjustment component 400 in this example can be understood as adjusting the relative distance between the two mounting housings 200 (corresponding to the subject's two eyes respectively) to adapt to the subject's interpupillary distance. In this example, the adjustment shaft 420 is driven by the knob 440, causing the mounting housings 200 to move in the left-right direction. Two guide blocks 430 can be threadedly connected to the adjustment shaft 420, and each is fixed to one mounting housing 200. For example, the adjustment shaft 420 is a shaft with symmetrically helical threads. When the knob 440 is rotated, the two guide blocks 430 can simultaneously move closer or further apart to adapt to the subject's interpupillary distance. This example reduces costs by manually adjusting the knob 440.

[0094] In this example, two mounting housings 200 are set up. By setting up two pressure measurement components 300, the measurement difference caused by the positional deviation of the left and right intraocular pressure can be reduced, thereby ensuring the accuracy of the measurement of the left and right intraocular pressure data.

[0095] like Figure 9 and Figure 12 As shown, Figure 12 This is a schematic diagram of the scale markings on the mounting base according to some embodiments of this application. In some embodiments, the outer surface of the mounting base 110 is further provided with scale markings 111, which are located at the guide block 430 to indicate the moving position of the mounting housing 200.

[0096] Specifically, the outer surface of the mounting base 110 can be marked with interpupillary distance scales, such as 56mm-72mm. A pointer 431 is set on the guide block 430, which can indicate the current position during the movement of the guide block 430. During use, the interpupillary distance data of each person can be recorded for direct retrieval in the next use, thereby reducing adjustment time and improving measurement efficiency.

[0097] It should be noted that in this example, the adjustment component 400 can be set above the mounting housing 200 for easy observation and adjustment by the user. To ensure the stability of the movement of the mounting housing 200 and the guide block 430 in the adjustment component 400, a guide plate 610 and a guide optical axis 620 can be set on the mounting base 110 below the mounting housing 200. Specifically, the guide plate 610 is fixed on the mounting base 110, and the guide optical axis 620 extends along the second direction. The mounting housing 200 passes through the guide optical axis 620, which supports the mounting housing 200 without affecting its movement in the second direction.

[0098] like Figure 9 and Figure 11 As shown, Figure 11This is a schematic diagram of the measurement state of an intraocular pressure measuring device according to some embodiments of this application. In some embodiments, the intraocular pressure measuring device further includes a calibration component 500, which is rotatably disposed in a mounting housing 200. The mounting housing 200 has a notch for allowing the calibration component 500 to be screwed in or out of the mounting housing 200. The intraocular pressure measuring device has a calibration state and a measurement state, which can be switched between. In the calibration state, the calibration component 500 is screwed into the mounting housing 200, and the adjustment component 400 adjusts the position of the mounting housing 200 based on the calibration component 500. In the measurement state, the calibration component 500 is screwed out of the mounting housing 200, and the pressure measuring component 300 is installed in the mounting housing 200 to perform intraocular pressure measurement.

[0099] Specifically, the mounting housing 200 may have a notch on its side wall along the first direction. The purpose of the notch is mainly to allow the calibration component 500 to enter or unscrew from the mounting housing 200. To clearly understand the use of the intraocular pressure measurement device provided in this example, the use of the intraocular pressure measurement device is divided into a calibration state and a measurement state. In the calibration state (the subject's eyes are open), the pressure measuring component 300 is not inside the mounting housing 200. At this time, the calibration component 500 can be manually moved from the outside of the mounting housing 200 to the inside of the mounting housing 200. During the calibration process, the adjustment component 400 is adjusted synchronously until the mounting housing 200 corresponds to the subject's pupil. After calibration, the calibration component 500 is unscrewed from the mounting housing 200 to release the internal space of the mounting housing 200. Then, the pressure measuring component 300 is pushed into the mounting housing 200 along the first direction (the subject's eyes are closed) until the contact 320 contacts the subject's eye. Finally, the measurement is started to obtain the subject's intraocular pressure value.

[0100] In this example, the calibration component 500 can be an iris recognition mechanism that uses a camera to identify the iris position in order to automatically adjust the probe position.

[0101] In addition to the iris recognition mechanism mentioned above, the calibration component 500 can also be, for example... Figure 9 As shown, in some embodiments, the calibration component 500 includes a connecting block 510 and at least two positioning pieces 520, the at least two positioning pieces 520 being spaced apart from the connecting block 510 along a first direction, the connecting block 510 being rotatably positioned at a notch in the mounting housing 200; wherein, the positioning piece 520 includes a positioning mark 521.

[0102] Specifically, the positioning mark 521 can be a crosshair center line set on the transparent positioning piece 520. In the calibration state, at least two positioning pieces 520 are arranged sequentially along the first direction (front-back direction). A three-point alignment method can be used, ensuring that the human eye and the two positioning crosshairs are aligned, thus aligning the contact piece 320 with the eye at the pupil. This example achieves the positioning of the mounting housing 200 using only two simple positioning pieces 520, and the visual markings reduce the difficulty of user operation. Figure 9 As shown, the connecting block 510 rotates around axis B.

[0103] like Figure 13 As shown, Figure 13 This is a schematic diagram of the structure of a wearing component provided according to some embodiments of this application. In some embodiments, the wearing component further includes at least two retractable straps 120, one end of which is movably connected to the mounting base 110, and the other end of which is away from the mounting base 110 is connected via an adjustment knob 140, which is used to tighten or loosen the at least two retractable straps 120.

[0104] Specifically, the ends of the two retractable straps 120 near the mounting base 110 can be fastened to the mounting base 110 by a buckle and can rotate relative to the mounting base 110. The ends of the two retractable straps 120 away from the mounting base 110 are connected to the adjustment knob 140 through a gear and rack for adjusting the tightness of the head circumference.

[0105] Additionally, the wearing component may include a Velcro strap 130, which is positioned above the subject's head to fix the device's height and prevent it from slipping. The wearing component in this example is multi-dimensionally adjustable to fit different subjects.

[0106] The overall process of using the above-mentioned intraocular pressure measurement device can be as follows: After the subject puts on the intraocular pressure measurement device, adjust the device's position. The tightening band 120 can be tightened by rotating the adjustment knob 140 of the tightening band 120. After adjusting the flexible strap so that the mounting housing 200 corresponds to the subject's eye, fasten the Velcro. Screw the calibration component 500 into the mounting housing 200. At the same time, adjust the adjustment component 400 to adjust the distance between the two mounting housings 200 so that the eyes are aligned with the cross center line of the positioning plate 520. At this time, the scale value on the mounting base 110 can be recorded, indicating the pupillary distance of the subject's left and right eyes. When measuring again in a subsequent time, the scale value can be directly adjusted to this value, improving the efficiency of operation.

[0107] After adjusting the device positioning and installing the housing 200 with interpupillary distance, rotate and open the positioning plate 520 to install the pressure measuring component 300 into the housing 200. Continue to push it towards the human eye in the first direction until the end of the measuring probe contacts the closed eye. Rotate the locking knob 210 at the bottom of the housing 200 to fix the pressure measuring component 300. Then, the drive unit 330 is powered on, and the output shaft of the drive unit 330 drives the measuring probe to act on the eye. The magnetic field of a pair of magnets on the pressure sensing element 340 makes a linear displacement relative to the displacement sensor 352. The intraocular pressure is calculated based on the measurement data of the pressure sensor 341 and the displacement sensor 352. After measuring the intraocular pressure, repeat the above steps to measure the intraocular pressure of another person.

[0108] Based on the same inventive concept, this application also provides an intraocular pressure measurement system for assessing the intraocular pressure value of a subject. This system further includes the intraocular pressure measurement device and terminal device described in the above embodiments. The terminal device is communicatively connected to the pressure measurement component 300. The terminal device is used to send a movement signal to the driving component 330 to drive the contact component 320 to press against the eye, and to receive pressure data transmitted by the pressure sensor 340 and displacement data transmitted by the displacement sensor 350, so as to assess the subject's intraocular pressure value using the pressure data and displacement data.

[0109] It is understood that the pressure measurement component 300 can communicate with the terminal device via a wireless module such as Bluetooth or WiFi. In this example, the terminal device can be a mobile phone, tablet, watch, computer, or a specific display device. The terminal device can have built-in algorithms to calculate intraocular pressure values ​​based on the received pressure and displacement data. The intraocular pressure measurement system provided in this example enables doctors to view data in real time and provide remote guidance through a cloud platform. It also supports 24-hour continuous monitoring to capture intraocular pressure fluctuations, reducing the time patients spend traveling to and from the hospital and improving diagnostic efficiency.

[0110] The technical features of the above embodiments can be combined in any way. For the sake of brevity, 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.

[0111] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An intraocular pressure measuring device, characterized in that, The intraocular pressure measuring device includes: Wearing components (100); The mounting housing (200) is movably mounted on the wearing component (100); A pressure measuring component (300) is detachably installed within the mounting housing (200). The pressure measuring component (300) includes a pressure sensor (340), a displacement sensor (350), a contact (320), a cylinder (310), and a drive (330). The drive (330), the pressure sensor (340), and the displacement sensor (350) are installed within the cylinder (310). The pressure sensor (340) is connected to the contact (320). The contact (320) is used to contact the subject's eye and apply pressure to the eye. The pressure sensor (340) is used to monitor the pressure information on the surface of the eye. The displacement sensor (350) is used to measure the movement distance of the pressure sensor (340).

2. The intraocular pressure measuring device according to claim 1, characterized in that, The pressure measuring assembly (300) further includes a guide (360) extending along a first direction, the guide (360) being fixed inside the cylinder (310); The pressure sensing element (340) includes an adapter block (342) and a pressure sensor (341). One end of the adapter block (342) is connected to the drive element (330), and the other end is connected to the pressure sensor (341). The adapter block (342) passes through the guide element (360) to convert the rotational motion of the drive element (330) into linear motion along the first direction.

3. The intraocular pressure measuring device according to claim 2, characterized in that, The contact (320) includes a measuring probe, one end of which is connected to the pressure sensor (341), and the other end has a contact surface for contacting the eye.

4. The intraocular pressure measuring device according to claim 2, characterized in that, The displacement sensing element (350) includes a magnet (351) and a displacement sensor (352). One of the magnet (351) and the displacement sensing element (350) is disposed on the pressure sensing element (340), and the other of the displacement sensor (352) and the magnet (351) is disposed on the cylinder (310). The displacement sensor (352) is used to detect the change in the magnetic field of the magnet (351) to obtain the moving distance of the pressure sensing element (340).

5. The intraocular pressure measuring device according to any one of claims 2-4, characterized in that, The wearing component (100) includes a mounting base (110), and the mounting housing (200) is movably disposed on the mounting base (110) and is capable of reciprocating relative to the mounting base (110) in a second direction; The mounting housing (200) includes a cavity extending along a first direction, the cylinder (310) is configured to move relative to the mounting housing (200) along the first direction, and to fix the cylinder (310) and the mounting housing (200) after the contact (320) approaches or contacts the eye; the first direction is perpendicular to the second direction.

6. The intraocular pressure measuring device according to claim 5, characterized in that, The intraocular pressure measuring device further includes an adjustment component (400), which is disposed on the mounting base (110). The adjustment component (400) is used to connect to the mounting housing (200) and drive the mounting housing (200) to move along the second direction.

7. The intraocular pressure measuring device according to claim 6, characterized in that, The adjustment assembly (400) includes a support frame (410), an adjustment shaft (420), and two guide blocks (430). The support frame (410) is fixed to the mounting housing (200), the adjustment shaft (420) is rotatably mounted on the support frame (410), and the two guide blocks (430) pass through the adjustment shaft (420). The two guide blocks (430) are connected to the two mounting housings (200) in a one-to-one correspondence. The adjustment shaft (420) is provided with a knob (440) at its end; the outer surface of the mounting base (110) is also provided with a scale mark (111), which is located at the guide block (430) to indicate the moving position of the mounting housing (200).

8. The intraocular pressure measuring device according to claim 6, characterized in that, The intraocular pressure measurement device further includes a calibration component (500), which is rotatably disposed on the mounting housing (200); the mounting housing (200) has a notch for allowing the calibration component (500) to be screwed into or out of the mounting housing (200). The intraocular pressure measuring device has a calibration state and a measurement state. In the calibration state, the calibration component (500) is screwed into the mounting housing (200), and based on the calibration component (500), the adjustment component (400) is controlled to adjust the position of the mounting housing (200). In the measurement state, the calibration component (500) is screwed out of the mounting housing (200), and the pressure measuring component (300) is installed in the mounting housing (200) to perform intraocular pressure measurement.

9. The intraocular pressure measuring device according to claim 8, characterized in that, The calibration component (500) includes a connecting block (510) and at least two positioning pieces (520), the at least two positioning pieces (520) being spaced apart from the connecting block (510) along a first direction, and the connecting block (510) being rotatably disposed at a notch in the mounting housing (200); The positioning piece (520) includes a positioning identifier (521).

10. An intraocular pressure measurement system for assessing the intraocular pressure of a subject, characterized in that, The intraocular pressure measurement system includes the intraocular pressure measurement device according to any one of claims 1-9; and... A terminal device is communicatively connected to the pressure measurement component (300). The terminal device is used to send a movement signal to the drive element (330) to drive the contact element (320) to press the eye through the drive element (330), and to receive pressure data transmitted by the pressure sensor (340) and displacement data transmitted by the displacement sensor (350) to assess the intraocular pressure value of the subject through the pressure data and the displacement data.

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