An ocular drainage device

Abstract

The application relates to the technical field of metering, and discloses an eye drainage device which comprises a catheter and a puncture needle, the puncture needle is arranged in the catheter in a one-way movable mode, a push block is arranged on the puncture needle, a strip-shaped groove is arranged on the side wall of the catheter, the push block can be pushed in the strip-shaped groove, the eye drainage device further comprises a metering device, and the catheter is communicated with a drainage inlet. Through the above scheme, the problem that the drainage speed and the drainage volume metering lack accurate control in the drainage process in the prior art is solved.

Description

[0001] This application is a divisional application of application number 2025118405299, filed on December 8, 2025, entitled "Measuring Device, Eye Drainage Device and Method". Technical Field

[0002] This invention relates to the field of metrology, and more specifically, to an eye drainage device. Background Technology

[0003] The eye is a vital organ, upon which vision depends. However, the eye is also highly vulnerable, prone to complications such as increased intraocular pressure (IOP) due to disease or injury. Drainage is typically required to lower IOP. However, current techniques for lowering IOP through drainage have certain limitations, especially non-implantable drainage. Often, a certain amount of aqueous humor is drained based on experience. During drainage, the speed is controlled by the operator, relying on experience and making precise control difficult. Drainage that is too fast leads to a rapid drop in IOP, potentially causing hypotension. Drainage that is too slow results in a slow decrease in IOP, while continued aqueous humor production diminishes the effectiveness of the drainage. Furthermore, the operator's focus during the procedure limits the ability to accurately measure the drainage volume, resulting in a lack of further treatment guidance regarding the individualized relationship between IOP and drainage volume. Therefore, a new approach is needed to address these issues. Summary of the Invention

[0004] This invention proposes an eye drainage device that solves the problem of inaccurate control over drainage speed and drainage volume measurement in the prior art.

[0005] The technical solution of the present invention is as follows: A measuring device includes a measuring body, wherein the measuring body has a first cavity and a second cavity. The first cavity has a drainage inlet, and the first cavity and the second cavity are connected by a connecting pipe. The connecting pipe includes a rigid section and a flexible section arranged sequentially. The rigid section is connected to the first cavity, and the flexible section is connected to the second cavity. The measuring device also includes a piston block and a peristaltic drive unit. The piston block is movably disposed within the rigid section, and the flexible section is disposed within the peristaltic drive unit. The first cavity is filled with a first medium, and the second cavity is filled with a second medium. The peristaltic drive unit can drive the second medium in the flexible section to move the piston block. The piston block drives the flow of the second medium to drain the drainage inlet. The second cavity is provided with a measuring scale for measuring.

[0006] The measuring device also includes a control unit and an intraocular pressure monitoring unit. The control unit is communicatively connected to the intraocular pressure monitoring unit and the peristaltic drive unit, respectively. The control unit sends a control signal to the peristaltic drive unit based on the feedback value of the intraocular pressure monitoring unit.

[0007] The peristaltic drive unit includes a servo motor, a drive wheel, and a support plate. The drive wheel is provided with multiple drive teeth and is located on the output end of the servo motor. The hose segment is located between the drive wheel and the support plate. The drive wheel rotates to deliver the second medium within the hose segment.

[0008] The support plate is arc-shaped, and the arc of the support plate corresponds to the arc of the tooth end of the drive wheel. At least three teeth of the drive wheel press the hose section against the support plate.

[0009] The drive wheel has a toothed end with an abutting roller, which has a degree of freedom of rotation. The abutting roller abuts against the hose section and presses it against the support plate.

[0010] The metering body also includes a third chamber and a fourth chamber. The third chamber contains a filter screen. A pipeline connects the third chamber to the first chamber and can be selectively connected or closed. The third chamber, the first chamber, and the pipeline form a closed-loop circulation system. A circulating liquid pump connects the third chamber to the first chamber, allowing the liquid in the first chamber to circulate into the third chamber. The fourth chamber can be selectively connected to or closed with the first chamber. The fourth chamber is equipped with a metering scale for measurement. The first chamber can be selectively connected to or closed with the drainage inlet and the rigid section.

[0011] An eye drainage device includes a catheter and a puncture needle. The puncture needle is unidirectionally movable within the catheter and has a pusher on it. The side wall of the catheter has a strip groove, and the pusher can be pushed within the strip groove. The eye drainage device also includes a metering device as described in any of the above embodiments. The catheter is connected to the drainage inlet.

[0012] An eye drainage method, the method comprising the eye drainage device described in the above-described scheme, the method comprising the following steps: The first cavity is filled with the first medium, and the second cavity is filled with the second medium; Secure the catheter to the preset position, and push the puncture needle to the predetermined puncture site under the guidance of the catheter; The peristaltic drive unit delivers a second medium for eye drainage; After the drainage is completed, the increase value of the second medium in the second cavity is read.

[0013] The step "peristaltic drive unit actuates to deliver the second medium for eye drainage" further includes: The intraocular pressure monitoring unit detects intraocular pressure and feeds the monitored value back to the control unit. The control unit obtains the drainage volume calculation value based on the monitored value and sends a start command to the servo motor. Once the amount of the second medium delivered is the same as the drainage volume calculation value, the control unit sends a stop command to the servo motor.

[0014] After the step "After drainage is completed, read the increase value of the second medium in the second cavity" is completed, the following steps are also included: The first cavity is closed to the drainage inlet and the rigid section; the first cavity is connected to the third cavity; the first cavity is closed to the fourth cavity; the medium in the first cavity circulates to the third cavity and then flows back to the first cavity. The first cavity is closed to the third cavity, the first cavity is connected to the fourth cavity, the first cavity is connected to the rigid section, the control unit controls the servo motor to rotate in the opposite direction and the running time is the same as that of the drainage stage, and reads the measurement value in the fourth cavity.

[0015] The working principle and beneficial effects of this invention are as follows: This invention discloses a metering device that can accurately measure liquid flow and deliver liquid at a controllable flow rate. Specifically, in the solution of this application, the metering body is connected to a first cavity and a second cavity via a connecting pipe. The connecting pipe consists of a rigid section with a piston block and a flexible section driven by a peristaltic drive unit. The second cavity is used as the metering side, and the first cavity is used as the drainage side. During use, the peristaltic drive unit delivers a second medium into the second cavity. The volume change drives the piston block to move, thereby generating drainage force in the first cavity. Based on the above solution, firstly, the peristaltic drive unit can control the drainage speed at a controllable speed, and the second medium is separate from the first medium, ensuring a stable delivery speed for the second medium and preventing the drained liquid from affecting the drainage rate. Secondly, the second medium is independent of the first medium. As the metering medium, the second medium can avoid impurities in the drainage medium from affecting the metering accuracy, achieving a clever conversion of the metering volume, thus solving the defects of the prior art. Attached Figure Description

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0017] Figure 1 This is a schematic diagram of one embodiment of the metering device of the present invention; Figure 2 This is a schematic diagram of another embodiment of the metering device of the present invention; Figure 3 This is a schematic diagram of the control connection layout of the metering device of the present invention; Figure 4 This is a schematic diagram of one embodiment of the eye drainage device of the present invention; Figure 5 This is a schematic diagram of the steps of the eye drainage method of the present invention; In the diagram: 1. Metering body, 2. First chamber, 3. Second chamber, 4. Drainage inlet, 5. Rigid section, 6. Tube section, 7. Piston block, 8. Control unit, 9. Intraocular pressure monitoring unit, 10. Servo motor, 11. Drive wheel, 12. Support plate, 13. Abutment roller, 14. Third chamber, 15. Fourth chamber, 16. Filter screen, 17. Circulating liquid pump, 18. Tube, 19. Puncture needle, 20. Push block. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0019] Example 1: As Figure 1 As shown in the figure, this embodiment proposes a metering device, which includes a metering body 1, wherein the metering body 1 is provided with a first cavity 2 and a second cavity 3. The first cavity 2 is provided with a drainage inlet 4. The first cavity 2 and the second cavity 3 are connected by a connecting pipe. The connecting pipe includes a rigid section 5 and a flexible section 6 arranged sequentially. The rigid section 5 is connected to the first cavity 2, and the flexible section 6 is connected to the second cavity 3. The metering device also includes a piston block 7 and a peristaltic drive unit. The piston block 7 is movably disposed within the rigid section 5, and the flexible section 6 is disposed within the peristaltic drive unit. The first cavity 2 is filled with a first medium, and the second cavity 3 is filled with a second medium. The peristaltic drive unit can drive the second medium in the flexible section 6 to move the piston block 7. The piston block 7 drives the second medium to flow to drain the drainage inlet 4. The second cavity 3 is provided with a metering scale for metering.

[0020] This embodiment discloses a metering device that can accurately measure liquid flow and deliver liquid at a controllable flow rate. Specifically, in the scheme of this application, the metering body 1 is connected to a first cavity 2 and a second cavity 3 via a connecting pipe. The connecting pipe consists of a rigid section 5 equipped with a piston block 7 and a flexible tube section 6 driven by a peristaltic drive unit. The second cavity 3 is used as the metering side, and the first cavity 2 is used as the drainage side. In use, the first cavity 2 is first filled with a first medium, and the second cavity 3 is filled with a second medium. The first medium extends to the piston block 7 inside the rigid pipe, and the second medium flows from the other side of the piston block 7 inside the rigid pipe to the flexible tube section 6 and then to the second cavity 3. The peristaltic drive unit acts on the flexible tube to realize the flow of the second medium within the flexible tube. The medium is conveyed at a certain speed through a peristaltic motion and gradually delivered to the second medium in the second cavity 3. Through volume change, the piston block 7 moves gradually from the rigid section 5 to the flexible section 6, thereby generating drainage force in the first cavity 2. The drainage opening connected to the first cavity 2 can then drain the fluid. The scale marked on the second cavity 3 can read the increment of the second medium in the second cavity 3 to obtain the amount of drainage. Based on the above scheme, firstly, the peristaltic drive unit can control the drainage speed at a controllable speed, and the second medium is separate from the first medium, so the delivery speed of the second medium is stable, avoiding the drainage liquid from affecting the drainage rate. Secondly, the second medium and the first medium are independent of each other. The second medium, as a metering medium, can avoid the presence of impurities in the drainage medium from affecting the metering accuracy, and achieves a clever conversion of metering volume, thereby solving the defects of the prior art.

[0021] Example 2, Reference Figure 2 The measuring device further includes a control unit 8 and an intraocular pressure monitoring unit 9. The control unit 8 is communicatively connected to the intraocular pressure monitoring unit 9 and the peristaltic drive unit, respectively. The control unit 8 sends a control signal to the peristaltic drive unit based on the feedback value of the intraocular pressure monitoring unit 9.

[0022] Building upon the above embodiments, the metering device further includes a control unit 8 and an intraocular pressure (IOP) monitoring unit 9. The IOP monitoring unit 9 can be a non-contact tonometer, monitoring IOP values ​​and feeding them back to the control unit 8. The control unit 8 calculates the required drainage volume based on the IOP values ​​and issues control commands to the peristaltic drive unit, including but not limited to start commands, speed commands, and stop commands, to achieve drainage at a suitable and stable drainage rate based on IOP. In possible embodiments, the IOP monitoring unit 9 can continuously or intermittently monitor IOP and feed the monitoring values ​​back to the control unit 8. The control unit 8 can selectively adjust the operating parameters of the peristaltic drive unit, including but not limited to speed and running time, based on a decrease in IOP.

[0023] Example 3: Reference Figure 1and Figure 3 The peristaltic drive unit includes a servo motor 10, a drive wheel 11, and a support plate 12. The drive wheel 11 is provided with a plurality of drive teeth and is located on the output end of the servo motor 10. The hose segment 6 is located between the drive wheel 11 and the support plate 12. The drive wheel 11 rotates to transport the second medium in the hose segment 6.

[0024] The support plate 12 is arc-shaped, and the arc of the support plate 12 corresponds to the arc of the tooth end of the drive wheel 11. At least three teeth of the drive wheel 11 press the hose segment 6 against the support plate 12.

[0025] The drive wheel 11 has a toothed end with an abutting roller 13, which has a degree of freedom of rotation. The abutting roller 13 abuts against the hose section 6 and presses it against the support plate 12.

[0026] Based on the above embodiments, the peristaltic drive unit specifically uses a servo motor 10 to drive the drive wheel 11 to rotate. A support plate 12 is provided, which is movable. The hose segment 6 is placed between the drive wheel 11 and the support plate 12, and the support plate 12 clamps the hose segment 6 with the drive wheel 11. In an optional embodiment, the support plate 12 can be moved by a telescopic unit. When the hose segment 6 needs to be placed, the telescopic unit retracts, widening the gap between the support plate 12 and the drive wheel 11, allowing the hose segment 6 to be placed between the support plate 12 and the drive wheel 11. The telescopic unit extends, and the support plate 12 clamps the hose segment 6 with the drive wheel 11. Furthermore, the support plate 12 can be designed with an arc-shaped structure, with the teeth of the drive wheel 11 pressing against the support plate 12, and at least three teeth abutting the hose segment 6. When the drive wheel 11 rotates, on the one hand, it can maintain a relatively stable conveying efficiency and improve the stability of the drainage rate. On the other hand, as the teeth continuously switch abutting, the first medium is always conveyed in the direction driven by the drive wheel 11, resulting in stable drainage. Furthermore, the drive wheel 11 has an abutment roller 13 at the tooth end. The abutment roller 13 can rotate. When the drive wheel 11 rotates, the abutment roller 13 abuts against the hose section 6 to squeeze and convey the second medium in the hose section 6. The abutment roller 13 makes the conveying more stable and smooth, and improves the stability of the drainage speed. The stable drainage speed improves the stable discharge of the drainage medium and avoids adverse effects caused by being too fast or too slow. On the other hand, it makes the observation and measurement of the drainage flow in the second cavity 3 more controllable and intuitive.

[0027] Example 4, Reference Figure 3The metering body 1 is further provided with a third cavity 14 and a fourth cavity 15. A filter screen 16 is provided in the third cavity 14. A pipeline is provided between the third cavity 14 and the first cavity 2, and can be selectively connected or closed. The third cavity 14, the first cavity 2 and the pipeline form a closed-loop circulation system. A circulating liquid pump 17 is provided between the third cavity 14 and the first cavity 2. The circulating liquid pump 17 circulates the liquid in the first cavity 2 into the third cavity 14. The fourth cavity 15 can be selectively connected or closed with the first cavity 2. The fourth cavity 15 is provided with a metering scale for measurement. The first cavity 2 can be selectively connected or closed with the drainage inlet 4 and the rigid section 5.

[0028] Based on the above embodiments, further precise measurement is achieved. After the drainage is completed, the first cavity 2 is closed to the drainage inlet 4 and the rigid section. The first cavity 2 is connected to the third cavity 14 to form a circulation loop. A filter screen 16 is installed in the third cavity 14. A circulating liquid pump 17 is installed to circulate the mixed liquid of the first medium and the drainage medium in the first cavity 2 to the third cavity 14. The filter screen 16 filters the circulating medium, removing any impurities that may be present in the drainage medium and leaving them in the third cavity 14. After the circulation is completed, the first cavity 2 and the third cavity 14 are closed to each other. The first cavity 2 is connected to the fourth cavity 15. At the same time, the first cavity 2 is reconnected to the rigid section 5. It should be noted that each cavity can be switched between connection and closure by setting an electronic valve in conjunction with the control unit 8. At this time, the control unit 8 sends a signal to the servo motor 10 to control the servo motor 10 to reverse. The reversal time is the same as the drainage time. The drive wheel 11 transports the second medium in the reverse direction. The piston block 7 moves in the reverse direction to discharge the mixed liquid in the first chamber 2 to the fourth chamber 15 and measure it. The volume of the first chamber 2 after the liquid is discharged is the same as the initial first medium. The fourth chamber 15 measures the amount of liquid discharged and performs further precise measurement on the drainage liquid after the impurities are screened out.

[0029] refer to Figure 4 This application also discloses an eye drainage device, which includes a catheter 18 and a puncture needle 19. The puncture needle 19 is unidirectionally movable within the catheter 18. A pusher 20 is provided on the puncture needle 19. A strip groove is provided on the side wall of the catheter 18. The pusher 20 can be pushed within the strip groove. The eye drainage device also includes a metering device as described in any of the above embodiments. The catheter 18 is connected to the drainage inlet 4.

[0030] In this embodiment, an eye drainage device is also disclosed. The catheter 18 is connected to the drainage port in the metering device. A puncture needle 19 is installed inside the catheter 18. The puncture needle 19 can move along the catheter 18. A strip groove is provided on the side wall of the catheter 18. A push block 20 is provided on the puncture needle 19. The push block 20 extends out of the strip groove. After the position of the catheter 18 is guided and fixed, the puncture needle 19 is inserted into the predetermined puncture site in the anterior chamber angle by moving the push block 20. The puncture is completed under the guidance of the gonioscope. Then the metering device operates according to at least one of the above embodiments to perform drainage and metering.

[0031] refer to Figure 5 This application also discloses an eye drainage method, the method including the eye drainage device described in the above embodiments, the method including the following steps: S100: The first cavity 2 is filled with the first medium, and the second cavity 3 is filled with the second medium; S200: Fix the catheter 18 to the preset position, and push the puncture needle 19 to the predetermined puncture position under the guidance of the catheter 18; S300: The peristaltic drive unit delivers the second medium for eye drainage; S400: After the drainage is completed, read the increase value of the second medium in the second cavity 3.

[0032] In this embodiment, after the eye drainage device is connected and ready, the first medium is filled into the first cavity 2, and the first medium fills the catheter 18 and the puncture needle 19. Then, with the assistance of the gonioscope, the catheter 18 is fixed to the preset position, the catheter 18 is guided, and the puncture needle 19 is inserted into the predetermined puncture position. Then, the peristaltic drive unit slowly drives the second medium to flow to perform eye drainage. After the drainage is completed, the increase value of the second medium is obtained by reading the scale on the second cavity 3. The read value can be used as the value of the drainage medium for reference.

[0033] The step "peristaltic drive unit actuates to deliver the second medium for eye drainage" further includes: The intraocular pressure monitoring unit 9 detects the intraocular pressure and feeds back the intraocular pressure monitoring value to the control unit 8. The control unit 8 obtains the drainage volume calculation value based on the intraocular pressure monitoring value and sends a start command to the servo motor 10. After the amount of the second medium delivered is the same as the drainage volume calculation value, the control unit 8 sends a stop command to the servo motor 10.

[0034] Based on the above embodiments, step S300 can also have other implementation methods. Specifically, after the intraocular pressure monitoring unit 9 detects the value of the intraocular pressure, the intraocular pressure monitoring value is fed back to the control unit 8. The control unit 8 combines the intraocular pressure monitoring value to perform theoretical calculations to obtain the drainage volume calculation value. The control unit 8 can then control the servo motor 10 to deliver the second medium at a reasonable and stable speed according to the drainage volume calculation value. After the second medium is delivered to the same level as the drainage volume calculation value, the control unit 8 controls the servo motor 10 to stop. During this process, the drainage flow rate is stable and the measurement is accurate. Furthermore, based on the monitoring of the intraocular pressure detection unit, the drainage stability can be guaranteed.

[0035] After the step "After drainage is completed, read the increase value of the second medium in the second cavity 3" is completed, the following steps are also included: The first cavity 2 is closed to the drainage inlet 4 and the rigid section 5. The first cavity 2 is connected to the third cavity 14. The first cavity 2 is closed to the fourth cavity 15. The medium in the first cavity 2 circulates to the third cavity 14 and flows back to the first cavity 2. The first cavity 2 and the third cavity 14 are closed, the first cavity 2 and the fourth cavity 15 are connected, the first cavity 2 and the rigid section 5 are connected, the control unit 8 controls the servo motor 10 to rotate in the opposite direction and the running time is the same as that of the drainage stage, and reads the metering value in the fourth cavity 15.

[0036] Based on the above embodiments, the increase value of the second medium in the second cavity 3 is read as a reference drainage measurement value. However, it can be further improved by filtering the mixture in the first cavity 2 through the third cavity 14 and then performing further precise measurement through the fourth cavity 15 to remove impurities present in the drainage medium, which can be used as a further reference drainage measurement value. Thus, the drainage measurement value obtained by the control unit 8 based on the intraocular pressure monitoring value can be corrected according to the drainage value, thereby improving the matching degree between drainage and intraocular pressure.

[0037] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An eye drainage device, characterized in that, The eye drainage device includes a catheter (18) and a puncture needle (19). The puncture needle (19) is unidirectionally movable inside the catheter (18). A pusher (20) is provided on the puncture needle (19). A strip groove is provided on the side wall of the catheter (18). The pusher (20) can be pushed within the strip groove. The eye drainage device also includes a metering device. The catheter (18) is connected to the drainage inlet (4).

2. The eye drainage device according to claim 1, characterized in that, The metering device includes a metering body (1), wherein a first cavity (2) and a second cavity (3) are provided inside the metering body (1). The first cavity (2) is provided with a drainage inlet (4). The first cavity (2) and the second cavity (3) are connected by a connecting pipe. The connecting pipe includes a rigid section (5) and a flexible section (6) arranged sequentially. The rigid section (5) is connected to the first cavity (2), and the flexible section (6) is connected to the second cavity (3). The metering device also includes a piston block (7). The peristaltic drive unit includes a piston block (7) movably disposed within the rigid section (5), a flexible tube section (6) disposed within the peristaltic drive unit, a first cavity (2) filled with a first medium, and a second cavity (3) filled with a second medium. The peristaltic drive unit can drive the second medium within the flexible tube section (6) to transport the piston block (7) to move. The piston block (7) drives the second medium to flow to drain the inlet (4). The second cavity (3) is provided with a measuring scale for measurement.

3. The eye drainage device according to claim 2, characterized in that, The metering device also includes a control unit (8) and an intraocular pressure monitoring unit (9), wherein the control unit (8) is communicatively connected to the intraocular pressure monitoring unit (9) and the peristaltic drive unit respectively, and the control unit (8) sends a control signal to the peristaltic drive unit according to the feedback value of the intraocular pressure monitoring unit (9).

4. The eye drainage device according to claim 3, characterized in that, The peristaltic drive unit includes a servo motor (10), a drive wheel (11), and a support plate (12). The drive wheel (11) is provided with multiple drive teeth and is located at the output end of the servo motor (10). The hose segment (6) is located between the drive wheel (11) and the support plate (12). The drive wheel (11) rotates to deliver the second medium in the hose segment (6).

5. The eye drainage device according to claim 4, characterized in that, The support plate (12) is arc-shaped, and the arc of the support plate (12) corresponds to the arc of the tooth end of the drive wheel (11). At least three teeth of the drive wheel (11) press the hose section (6) against the support plate (12).

6. The eye drainage device according to claim 5, characterized in that, The drive wheel (11) has a toothed end with an abutting roller (13), which has a degree of freedom of rotation. The abutting roller (13) abuts against the hose section (6) and presses it against the support plate (12).

7. The eye drainage device according to claim 6, characterized in that, The metering body (1) is also provided with a third cavity (14) and a fourth cavity (15). The third cavity (14) is provided with a filter screen (16). The third cavity (14) and the first cavity (2) are connected by a pipeline and can be selectively connected or closed. The third cavity (14), the first cavity (2) and the pipeline form a closed-loop circulation system. The third cavity (14) and the first cavity (2) are provided with a circulating liquid pump (17). The circulating liquid pump (17) causes the liquid in the first cavity (2) to circulate into the third cavity (14). The fourth cavity (15) and the first cavity (2) can be selectively connected or closed. The fourth cavity (15) is provided with a metering scale for metering. The first cavity (2) can be selectively connected or closed with the drainage inlet (4) and the rigid section (5).

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