Viscoelastic agent absorbing and removing instrument in intraocular lens implantation operation

Abstract

The invention relates to the technical field of medical apparatus and instruments, in particular to an intraoperative viscoelastic agent suction instrument for intraocular lens implantation, which comprises a replacement host, a liquid supply pump, a suction pump and a controller electrically connected with the liquid supply pump and the suction pump, the replacement main machine is further provided with a liquid inlet and a liquid outlet which are communicated with the liquid supply pump, and a suction port and a liquid discharge port which are communicated with the suction pump. An input connector and an output connector are arranged at one end of the handle, a replacement pipe is arranged at the other end of the handle, a liquid adding hole and a suction hole are formed in the free end of the replacement pipe, the liquid adding hole is communicated with the input connector, and the suction hole is communicated with the output connector. By balancing perfusion and suction amounts, intraoperative intraocular pressure fluctuation is avoided, intraoperative intraocular pressure caused by high intraocular pressure or intraocular pressure caused by excessive suction is avoided, and therefore the risk of optic nerve or retina injury is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a viscoelastic agent aspirator during intraocular lens implantation surgery. Background Art

[0002] While myopia surgery is becoming increasingly sophisticated, laser corneal surgery is not an option for patients with thin corneas due to safety concerns. The advent of intraocular lens (ICL) implants offers hope for those with thin corneas to eliminate the need for glasses. However, improper rinsing of the viscoelastic implant (which protects intraocular tissue and maintains the anterior chamber during surgery) can lead to increased intraocular pressure, eye pain, tearing, and blurred vision. Failure to seek medical attention promptly can lead to blindness. Summary of the Invention

[0003] The present invention provides a viscoelastic aspirator for intraocular lens implantation surgery, which balances the infusion and aspiration volumes to avoid intraocular pressure fluctuations during surgery, resulting in high intraocular pressure or low intraocular pressure due to excessive aspiration, thereby reducing the risk of optic nerve or retinal damage.

[0004] In order to achieve the above-mentioned purpose, the present invention provides the following technical solution: a viscoelastic agent aspirator for intraocular lens implantation, comprising: a replacement host, the replacement host being provided with a liquid supply pump, a suction pump, and a controller electrically connected to the liquid supply pump and the suction pump, the replacement host being further provided with a liquid inlet and a liquid outlet connected to the liquid supply pump, and a suction port and a liquid discharge port connected to the suction pump; a handle, one end of the handle being provided with an input interface and an output interface, the other end being provided with a replacement tube, the free end of the replacement tube being provided with a liquid adding hole and a suction hole, the liquid adding hole being connected to the input interface, and the suction hole being connected to the output interface.

[0005] Preferably, a first display and a pressure regulating knob are provided on the top of the replacement host, and a first pressure sensor is provided on the suction port. The first display, the pressure regulating knob and the first pressure sensor are electrically connected to the controller respectively. The pressure regulating knob is used to set the intraocular pressure, and the first pressure sensor is used to collect the intraocular pressure through the handle.

[0006] Preferably, a second display is provided on the top of the replacement host, and a second pressure sensor is provided at the liquid outlet. The second display and the second pressure sensor are electrically connected to the controller respectively, and the second pressure sensor is used to detect the perfusion pressure.

[0007] Preferably, a third display is provided on the top of the replacement host, and a flow sensor is provided on the liquid inlet. The third display and the flow sensor are electrically connected to the controller respectively for measuring the perfusion liquid.

[0008] Preferably, the distance between the liquid adding hole and the suction hole is 3 mm.

[0009] The beneficial effects of the present invention lie in the following: This intraoperative viscoelastic aspirator for intraocular lens implantation is designed to safely and efficiently remove residual viscoelastic from the eye. It utilizes a dual-pump coordinated replacement mechanism. The supply pump, connected to an injection bottle via the inlet, pumps in a balanced salt solution or other irrigating fluid. This fluid is then continuously injected into the anterior chamber through the outlet, the input port of the handle, and the fluid inlet of the replacement tube, maintaining anterior chamber stability. The suction pump, on the other hand, aspirates the mixture of viscoelastic and irrigating fluid from the eye through the suction port, discharging it into a collection bucket via the outlet port, the suction port, and the drain port, thereby forming a closed-loop replacement system. A controller dynamically adjusts the flow rates of the dual pumps to ensure matching injection and aspiration rates, for example, a ratio of 1:1-1.05, to prevent anterior chamber collapse or sudden increase in intraocular pressure. The replacement tube design spatially separates the fluid inlet and the suction port, with the inlet located at the distal end of the tube, near the iris, and the suction port located at the proximal end, near the cornea. This utilizes fluid dynamics to achieve laminar flow replacement, preferentially removing viscoelastic over aqueous humor. Furthermore, the suction pump pressure is controlled within a safe range, such as 10-60 mmHg, to minimize mechanical damage to the lens capsule or corneal endothelium. This technical solution balances irrigation and aspiration volumes to avoid intraoperative intraocular pressure fluctuations, such as high intraocular pressure caused by viscoelastic residue or low intraocular pressure caused by excessive aspiration, thereby reducing the risk of optic nerve or retinal damage. Targeted irrigation also reduces repeated instrument movement in and out of the anterior chamber, protecting the corneal endothelium, a crucial feature for patients with thin corneas. This device achieves a viscoelastic removal rate exceeding 95%. The dual-hole design creates a localized vortex for efficient viscoelastic removal, shortening surgical time. This design, through real-time intraocular pressure monitoring and dynamic pressure regulation, further optimizes the safety and accuracy of viscoelastic removal during intraocular lens implantation. The target intraocular pressure is set preoperatively using the pressure adjustment knob, and the controller automatically calculates the required irrigation / aspiration parameters based on the set value. The first pressure sensor, located at the aspiration port, indirectly measures intraocular pressure through the aspiration tubing in the handle and feeds the data back to the controller. The controller compares the set value with the measured intraocular pressure and adjusts the fluid supply pump and suction pump in real time, forming a closed-loop control loop. The primary display shows the current and target intraocular pressures in real time. The pressure adjustment knob allows the surgeon to quickly adjust the target intraocular pressure according to the stage of surgery without interrupting the procedure. This design further improves the safety and controllability of the viscoelastic removal system during intraocular lens implantation by adding irrigation pressure monitoring and display capabilities. The primary pressure sensor indirectly monitors intraocular pressure through the suction line, reflecting the overall pressure status of the anterior chamber. The secondary pressure sensor directly detects the real-time pressure of the irrigation fluid to ensure stable operation of the irrigation system. The controller collaboratively analyzes and compares the intraocular pressure and irrigation pressure data, dynamically adjusting the fluid supply pump flow rate. If insufficient irrigation pressure is detected, the pump speed is increased to prevent anterior chamber collapse. The primary display's main interface shows intraocular pressure and suction pressure. The secondary display's auxiliary interface displays irrigation pressure, irrigation flow rate, remaining fluid volume, and other information. The dual-screen division of labor improves information acquisition efficiency.The newly added flow sensor and third display in this design further optimize the accuracy and visualization of intraoperative fluid management. The flow sensor, utilizing electromagnetic or ultrasonic principles, precisely measures the instantaneous flow rate and cumulative usage of the perfusion fluid. This data is transmitted in real time to the controller and compared against pre-set safety thresholds. The third display, dedicated to the fluid management interface, dynamically displays a real-time flow curve, reflecting fluctuations in perfusion rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0011] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0012] Figure 2 This is a schematic diagram of the replacement pipeline structure of the present invention.

[0013] In the figure: 1. Replacement host; 2. Liquid supply pump; 3. Suction pump; 4. Liquid inlet; 5. Liquid outlet; 6. Suction port; 7. Liquid discharge port; 8. Handle; 9. Input interface; 10. Output interface; 11. Replacement tube; 12. Liquid addition hole; 13. Suction hole; 14. Injection bottle; 15. Collection bucket; 16. First display; 17. Pressure adjustment knob; 18. First pressure sensor; 19. Second display; 20. Second pressure sensor; 23. Third display; 24. Flow sensor. DETAILED DESCRIPTION

[0014] The following will clearly and completely describe the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0015] according to Figure 1 、 Figure 2As shown, a viscoelastic aspirator for intraocular lens implantation comprises: a replacement main unit 1, which is equipped with a liquid supply pump 2, a suction pump 3, and a controller electrically connected to the liquid supply pump 2 and the suction pump 3. The replacement main unit 1 is also equipped with a liquid inlet 4 and a liquid outlet 5 connected to the liquid supply pump 2, and a suction port 6 and a liquid discharge port 7 connected to the suction pump 3; a handle 8, one end of which is equipped with an input interface 9 and an output interface 10, and the other end is equipped with a replacement tube 11. The free end of the replacement tube 11 is equipped with a liquid addition hole 12 and a suction hole 13. The liquid addition hole 12 is connected to the input interface 9, and the suction hole 13 is connected to the output interface 10. The liquid addition hole 12 and the suction hole 13 are 3 mm apart.

[0016] This intraoperative viscoelastic aspirator for intraocular lens implantation is designed to safely and efficiently remove residual viscoelastic from the eye. It utilizes a dual-pump coordinated replacement mechanism. Its supply pump 2 connects to an injection bottle 14 via the liquid inlet 4, pumping in a balanced salt solution or other irrigating fluid. This fluid is then continuously injected into the anterior chamber through the liquid outlet 5, the input port 9 of the handle 8, and the liquid filling port 12 of the replacement tube 11, maintaining anterior chamber stability. The suction pump 3, on the other hand, aspirates the mixture of viscoelastic and irrigating fluid from the eye through the aspiration port, discharging it into a collection bucket 15 via the output port 10, the suction port 6, and the drain port 7, thus forming a closed-loop replacement system. A controller dynamically adjusts the flow rates of the dual pumps to ensure matching injection and aspiration rates, for example, a ratio of 1:1-1.05, to prevent anterior chamber collapse or sudden increases in intraocular pressure. The design of the replacement tube 11 spatially separates the inlet 12 and the aspiration port 13. The inlet 12 is located at the distal end of the tube 11, near the iris, while the aspiration port 13 is located at the proximal end, near the cornea. This utilizes fluid dynamics to achieve laminar flow replacement, prioritizing the removal of viscoelastic over aqueous humor. Furthermore, the pressure of the aspiration pump 3 is controlled within a safe range, such as 10-60 mmHg, to minimize mechanical damage to the lens capsule and corneal endothelium. This technical solution balances the infusion and aspiration volumes to avoid intraoperative intraocular pressure fluctuations, such as high intraocular pressure caused by viscoelastic residue or low intraocular pressure caused by excessive aspiration, thereby reducing the risk of optic nerve or retinal damage. Targeted irrigation also reduces repeated instrument entry and exit from the anterior chamber, protecting the corneal endothelium, a crucial feature for patients with thin corneas. This device achieves a viscoelastic removal rate exceeding 95%. The dual-port design creates a localized vortex, efficiently removing viscoelastic and shortening surgical time.

[0017] A first display 16 and a pressure regulating knob 17 are provided on the top of the replacement host 1, and a first pressure sensor 18 is provided on the suction port 6. The first display 16, the pressure regulating knob 17 and the first pressure sensor 18 are electrically connected to the controller respectively. The pressure regulating knob 17 is used to set the intraocular pressure, and the first pressure sensor 18 is used to collect the intraocular pressure through the handle 8.

[0018] This design further optimizes the safety and accuracy of the viscoelastic agent removal process during intraocular lens implantation through real-time intraocular pressure monitoring and dynamic pressure regulation. Before the operation, the target intraocular pressure is set through the pressure regulating knob 17, and the controller automatically calculates the required irrigation / suction parameters according to the set value. The first pressure sensor 18 is located at the suction port 6, and indirectly detects the intraocular pressure through the suction pipeline of the handle 8, and feeds the data back to the controller. The controller compares the set value with the measured intraocular pressure, and adjusts the liquid supply pump 2 and the suction pump 3 in real time to form a closed-loop control. The first display 16 displays the current intraocular pressure and target intraocular pressure in real time. The pressure regulating knob 17 allows the surgeon to quickly adjust the target intraocular pressure according to the stage of the operation without interrupting the operation.

[0019] A second display 19 is provided on the top of the replacement host 1, and a second pressure sensor 20 is provided on the liquid outlet 5. The second display 19 and the second pressure sensor 20 are electrically connected to the controller respectively, and the second pressure sensor 20 is used to detect the perfusion pressure.

[0020] This design further improves the safety and controllability of the viscoelastic agent removal system during intraocular lens implantation by adding perfusion pressure monitoring and display functions. The first pressure sensor 18 indirectly monitors the intraocular pressure through the suction line to reflect the overall pressure status of the anterior chamber. The second pressure sensor 20 directly detects the real-time pressure of the perfusion fluid to ensure the stable operation of the perfusion system. The controller collaboratively analyzes and compares the intraocular pressure and perfusion pressure data, and dynamically adjusts the flow rate of the liquid supply pump 2. If insufficient perfusion pressure is detected, the pump speed is increased to avoid anterior chamber collapse. The main interface of the first display 16 displays the intraocular pressure and suction pressure. The auxiliary interface of the second display 19 displays the perfusion pressure, perfusion flow, remaining liquid amount, etc. The dual-screen division of labor improves the efficiency of information acquisition.

[0021] A third display 23 is provided on the top of the replacement host 1, and a flow sensor 24 is provided on the liquid inlet 4. The third display 23 and the flow sensor 24 are electrically connected to the controller respectively for measuring the perfusion liquid.

[0022] The newly added flow sensor 24 and third display 23 in this design further enhance the accuracy and visualization of intraoperative fluid management. The flow sensor 24 uses electromagnetic or ultrasonic principles to accurately measure the instantaneous flow rate and cumulative usage of the perfusion fluid. This data is transmitted to the controller in real time and compared with preset safety thresholds. The third display 23, a dedicated fluid management interface, dynamically displays a real-time flow curve, reflecting fluctuations in perfusion rate, etc.

[0023] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A viscoelastic aspirator for intraocular lens implantation, characterized in that: include: A replacement host (1), the replacement host (1) being provided with a liquid supply pump (2), a suction pump (3), and a controller electrically connected to the liquid supply pump (2) and the suction pump (3); the replacement host (1) being further provided with a liquid inlet (4) and a liquid outlet (5) in communication with the liquid supply pump (2), and a suction port (6) and a liquid discharge port (7) in communication with the suction pump (3); A handle (8) is provided with an input interface (9) and an output interface (10) at one end of the handle (8), and a displacement tube (11) is provided at the other end. A liquid addition hole (12) and a suction hole (13) are provided at the free end of the displacement tube (11), the liquid addition hole (12) is connected to the input interface (9), and the suction hole (13) is connected to the output interface (10).

2. The viscoelastic aspirator for intraocular lens implantation according to claim 1, characterized in that: The top of the replacement host (1) is provided with a first display (16) and a pressure regulating knob (17); the suction port (6) is provided with a first pressure sensor (18); the first display (16), the pressure regulating knob (17) and the first pressure sensor (18) are electrically connected to the controller respectively; the pressure regulating knob (17) is used to set the intraocular pressure; and the first pressure sensor (18) is used to collect the intraocular pressure through the handle (8).

3. The viscoelastic aspirator for intraocular lens implantation according to claim 2, characterized in that: A second display (19) is provided on the top of the replacement main unit (1), and a second pressure sensor (20) is provided on the liquid outlet (5). The second display (19) and the second pressure sensor (20) are electrically connected to the controller respectively, and the second pressure sensor (20) is used to detect the perfusion pressure.

4. The viscoelastic aspirator for intraocular lens implantation according to claim 1, characterized in that: A third display (23) is provided on the top of the replacement host (1), and a flow sensor (24) is provided on the liquid inlet (4). The third display (23) and the flow sensor (24) are electrically connected to the controller respectively for measuring the perfusion liquid.

5. The viscoelastic aspirator for intraocular lens implantation according to claim 1, characterized in that: The distance between the liquid adding hole (12) and the suction hole (13) is 3 mm.

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