Improved function pipette handle for fundus surgery

Abstract

The utility model relates to medical consumables technical field especially, more particularly to a function improved pipette handle for fundus operation, including handle body, still including installation groove, the right side of handle body is provided with installation groove, the bottom of handle body is provided with the plug -in component, the top of plug -in component is connected with the connecting pipe, the top of connecting pipe is connected with the press valve, and the through -hole is opened in press valve, and the position that corresponds through -hole is provided with the hole plugging mechanism on press valve, the top of press valve is connected with the hose, the top of handle body is provided with the docking assembly, and pressure assembly is arranged in the inside of installation groove, the utility model discloses through the integration press valve and flow regulator on handle body, has improved the operating efficiency and security of ophthalmic surgery significantly, the initiative suction function makes the doctor be able to accurate control suction intensity, and the flexible response different operation stage's demand, the passive suction function maintains stable negative pressure environment, avoids the tissue damage, and the adaptability and controllability of operation have been enhanced greatly.

Description

Technical Field

[0001] This utility model relates to the field of medical consumables technology, and in particular to a functionally improved pipette handle for fundus surgery. Background Technology

[0002] Minimally invasive vitreoretinal surgery is one of the most complex and delicate surgeries in modern ophthalmology. During the procedure, it is often necessary to perform gas-fluid exchange, drain intraocular fluid, blow away blood clots or administer triamcinolone acetonide, etc. Common consumables used to complete this procedure include pipette handles. With the increasing number of patients with eye diseases and the fast pace of surgery, the clinical requirements for the performance of pipette handles are becoming increasingly stringent.

[0003] Existing pipettes for retinal surgery are divided into active and passive aspiration modes, but these two modes are not integrated into the same handle. Different instruments need to be changed according to the surgical needs. This design makes the operation process cumbersome, the switching of modes during surgery inconvenient, reduces surgical efficiency, limits the flexibility and adaptability of instruments to different scenarios, and makes it difficult to meet the real-time control needs of aspiration force and flow rate in complex surgeries, thus increasing surgical risks.

[0004] Therefore, in view of the problem that the existing pipette handles for fundus surgery are divided into active aspiration mode and passive aspiration mode, and the two modes are not integrated into the pipette handle, resulting in low flexibility and adaptability, a functionally improved pipette handle for fundus surgery can be designed. Utility Model Content

[0005] To overcome the problem that existing pipette handles for fundus surgery are divided into active and passive aspiration modes, but do not integrate both modes on the pipette handle, resulting in low flexibility and adaptability.

[0006] The technical solution of this utility model is as follows: a functionally improved pipette handle for fundus surgery, including a handle body; and a mounting groove, wherein the mounting groove is provided on the right side of the handle body, a plug-in component is provided at the bottom of the handle body, a connecting tube is connected to the top of the plug-in component, a press valve is connected to the top of the connecting tube, a through hole is provided on the press valve, a plugging mechanism is provided on the press valve corresponding to the through hole, a flexible tube is connected to the top of the press valve, a docking component is provided at the top of the handle body, and a pressure component is provided inside the mounting groove.

[0007] Preferably, by setting a pressure valve, which is a circular air bladder, during passive aspiration, the pressure component compresses the tubing, and the surgeon aligns the connector with the ophthalmic puncture cannula and inserts the cannula vertically into the eye. The pressure on the pressure valve is then released, and the through-hole on the valve remains open, allowing intraocular fluid or gas to drain from the circular hole. Blocking the through-hole with the hand obstructs passive aspiration, compressing the valve, and generating a backflow to release engaged tissue. During active aspiration, the pressure component is adjusted to completely release the pressure on the tubing. The connector is connected to the aspiration tubing of the ophthalmic surgical machine, and the surgeon aligns the connector with the ophthalmic puncture cannula and inserts the cannula vertically into the eye. The through-hole on the pressure valve is blocked with the hand, and the surgeon performs active aspiration by operating the surgical machine. This solves the problem that existing retinal surgery pipettes, which have separate active and passive aspiration modes, do not integrate both modes on the pipette handle, resulting in low flexibility and adaptability.

[0008] Preferably, the plug-in assembly includes a fixing plate and a needle tube; the bottom of the handle body is provided with a fixing plate, and the bottom of the fixing plate is equipped with a needle tube, which is connected to the connecting tube.

[0009] Preferably, the docking assembly includes a connecting plate and a connector; the connecting plate is mounted on the top of the handle body, and the connector is mounted on the top of the connecting plate, with the hose communicating with the connector.

[0010] Preferably, the plugging mechanism includes a leak-proof component and a connecting component, wherein the leak-proof component is used to close the through hole, and the connecting component is used to connect the leak-proof component and the press valve.

[0011] Preferably, the leak-proof component includes a rubber stopper; the rubber stopper is engaged inside the through-hole of the press valve.

[0012] Preferably, the connecting assembly includes connecting ropes; two connecting ropes are connected to the rubber stopper, and the ends of the connecting ropes are fixed to the press valve.

[0013] Preferably, the pressure assembly includes a flow regulator and a connecting shaft; the flow regulator is provided inside the mounting groove. The flow regulator is cylindrical, and the front and rear ends of the flow regulator are rotatably connected to the connecting shaft, which is slidably connected to the mounting groove.

[0014] Preferably, the pressure assembly also includes anti-slip grooves; several anti-slip grooves are provided on the outer side of the flow regulator.

[0015] The beneficial effects of this utility model are:

[0016] By integrating a pressure valve and flow regulator into the handle body, the efficiency and safety of ophthalmic surgery are significantly improved. The active suction function allows doctors to precisely control the suction intensity and flexibly respond to the needs of different surgical stages, while the passive suction function maintains a stable negative pressure environment to avoid tissue damage. This dual-mode design greatly enhances the adaptability and controllability of the surgery, and is compatible with a variety of complex surgical procedures. The integrated structure reduces the frequency of instrument changes, lowers the risk of surgical interruption, and simplifies the operation process. Its user-friendly design allows surgeons to focus more on delicate operations, effectively shortens the operation time, improves the success rate of surgery, and brings a safer and more comfortable surgical experience to patients. Attached Figure Description

[0017] Figure 1 The diagram shown is a three-dimensional structural schematic of this utility model;

[0018] Figure 2 The diagram shown is a three-dimensional structural schematic of the syringe of this utility model.

[0019] Figure 3 The diagram shown is a three-dimensional structural schematic of the push valve of this utility model;

[0020] Figure 4 The diagram shown is a three-dimensional structural schematic of the hole-plugging mechanism of this utility model;

[0021] Figure 5 The diagram shown is a three-dimensional structural diagram of the handle body of this utility model.

[0022] Explanation of reference numerals in the attached drawings: 1. Handle body; 2. Mounting groove; 31. Fixing plate; 32. Needle tube; 4. Connecting tube; 5. Press valve; 6. Hose; 71. Connecting plate; 72. Connecting head; 81. Rubber stopper; 82. Connecting rope; 91. Flow regulator; 92. Connecting shaft; 93. Anti-slip groove. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Minimally invasive vitreoretinal surgery, a highly complex and delicate surgical technique in modern ophthalmology, plays a crucial role in treating diseases such as retinal detachment, diabetic retinopathy, and macular holes. During the procedure, air-fluid exchange is a core operational step, requiring the use of precision instruments to drain intraocular fluid, remove blood clots or residual medications such as triamcinolone, in order to restore retinal anatomy and ensure postoperative visual function recovery. The pipette handle, as a key consumable in this surgery, directly affects the smoothness, safety, and final efficacy of the procedure. With the continuous rise in the incidence of ophthalmic diseases, especially the surge in age-related eye diseases due to aging, and the development of surgical techniques towards higher efficiency and minimally invasive procedures, clinical practice places higher demands on the precision, maneuverability, and reliability of pipette handles. An ideal pipette handle needs excellent negative pressure regulation capabilities, enabling rapid switching between liquids of different viscosities while maintaining stable flow control to prevent secondary retinal damage caused by pressure fluctuations. Its ergonomic design must ensure comfortable grip during prolonged surgeries, while the choice of materials must balance lightweight design and sterility to ensure chemical stability in the complex intraocular environment. Furthermore, with the increasing prevalence of combined surgeries (such as cataract-vitrectomy), pipette handles must also be compatible with various surgical device interface standards for seamless integration. Currently, domestic and international medical device manufacturers are driving the development of more precise and durable pipette handles through innovative material applications (such as medical-grade titanium alloys), intelligent pressure feedback systems, and modular designs to meet the growing high standards of clinical practice and ultimately provide patients with a safer and more efficient surgical experience.

[0025] Currently, the clinical use of pipette handles is mainly divided into two types: active aspiration mode and passive aspiration mode. Active aspiration mode involves the tubing at the rear of the pipette handle directly connecting to the negative pressure end of the machine. The operator actively provides negative pressure by using a foot pedal, thus achieving efficient liquid aspiration. The advantage of this mode is that the aspiration force is adjustable and stable, making it particularly suitable for operational scenarios requiring precise control of negative pressure intensity, such as providing continuous and reliable negative pressure support during delicate surgery or the aspiration of high-viscosity liquids. In contrast, passive aspiration mode involves sealing the tubing at the rear of the pipette handle with a screw cap. The operator manually presses a valve, utilizing the internal mechanical structure of the handle to create an instantaneous negative pressure, thereby achieving passive liquid aspiration. The advantage of this mode is its ease of operation and lack of reliance on external equipment, making it suitable for rapid, small-scale liquid transfers or temporary aspiration needs. However, its aspiration force and stability are relatively weaker, and it may not be suitable for high-precision or large-volume operations. Both modes have their applicable scenarios and limitations; the appropriate aspiration method should be selected based on specific clinical needs. Active suction mode is more suitable for prolonged, high-intensity, or high-precision operations, while passive suction mode is more suitable for temporary or portable scenarios. In addition, operators need to pay attention to handle maintenance and cleaning in both modes to ensure the long-term stability and hygiene safety of the equipment.

[0026] In clinical practice, insufficient negative pressure suction force from the pressure valve often affects operational efficiency. Therefore, modifications are frequently made to make it more similar to the function of a needle handle. There are two main modification methods, each with its own advantages and disadvantages. The first method involves shortening the rear tubing while retaining the conical connector and connector cap. This modification improves the negative pressure suction force to some extent, making it stronger than the original pipette handle, while retaining the function of machine-assisted suction. However, because a relatively long tubing remains inside the handle cavity, the improvement in negative pressure suction force is limited and cannot fully meet clinical needs, especially in scenarios requiring strong suction. The second method involves completely removing the tubing and pressure valve from the pipette handle and replacing them with a semi-closed pressure valve. This modification makes the handle structure closer to a needle handle, significantly improving the negative pressure suction force and making it similar to the effect of a needle handle. It can better meet the needs of high suction in clinical operations. However, this modification also brings significant limitations, namely, the complete loss of machine-assisted suction function, reducing its applicability in scenarios relying on mechanized operations. These two modification methods reflect different trade-offs in equipment functionality during clinical practice. The first method sacrifices some suction power while retaining versatility, while the second method sacrifices machine-assisted functions in exchange for higher suction efficiency. The specific choice must be weighed based on actual clinical needs. Neither modification method can simultaneously satisfy both the need to retain machine-assisted active suction and increase the suction power of passive suction, thus delaying the surgical procedure and affecting its efficiency.

[0027] Please see Figures 1-5 This utility model provides an embodiment: a functionally improved pipette handle for fundus surgery, including a handle body 1; and a mounting groove 2. The mounting groove 2 is provided on the right side of the handle body 1. A plug-in assembly is provided at the bottom of the handle body 1, and a connecting tube 4 is connected to the top of the plug-in assembly. A press valve 5 is connected to the top of the connecting tube 4. The press valve 5 has a through hole, and a plugging mechanism is provided on the press valve 5 at the position corresponding to the through hole. A flexible tube 6 is connected to the top of the press valve 5. A docking assembly is provided at the top of the handle body 1. A pressure assembly is provided inside the mounting groove 2. In passive aspiration mode, the pressure assembly will press the flexible tube 6. The pressure component is applied to close the tubing 6. After the surgeon inserts the connector vertically into the ophthalmic puncture cannula and into the eye, the pressure on the pressure valve 5 is released. At this time, the orifice of the pressure valve 5 remains open, and intraocular fluid or gas can be discharged through the orifice. If the orifice is manually closed, passive aspiration is obstructed. In this case, pressing the pressure valve 5 can generate a recoil force to release the engaged tissue. When switching to active aspiration, the pressure component completely releases the pressure on the tubing 6. After the connector is connected to the aspiration tube of the ophthalmic surgical machine, the surgeon also inserts the cannula vertically into the eye and performs active aspiration by manually closing the orifice of the pressure valve 5 using the surgical machine.

[0028] Please see Figure 1 and Figure 2 In this embodiment, the insertion assembly includes a fixing plate 31 and a needle tube 32; the bottom of the handle body 1 is provided with a fixing plate 31, and the bottom of the fixing plate 31 is equipped with a needle tube 32, which is connected to the connecting tube 4. The needle tube 32 is used to dock with the ophthalmic puncture cannula. The docking assembly includes a connecting plate 71 and a connector 72; the top of the handle body 1 is equipped with a connecting plate 71, and the top of the connecting plate 71 is equipped with a connector 72. The flexible tube 6 is connected to the connector 72. The connector 72 is used to connect with the suction tube of the ophthalmic surgical machine. The plugging mechanism includes a leak-proof assembly and a connecting assembly. The leak-proof assembly is used to close the through hole, and the connecting assembly is used to connect the leak-proof assembly and the pressure valve 5.

[0029] Please see Figures 1-5In this embodiment, the leak-proof component includes a rubber stopper 81; the rubber stopper 81 is engaged inside the through hole of the press valve 5. By setting the rubber stopper 81, the through hole can be blocked instead of a finger. The connecting component includes a connecting rope 82; two connecting ropes 82 are connected to the rubber stopper 81, and the ends of the connecting ropes 82 are fixed to the press valve 5. By setting the connecting ropes 82, the rubber stopper 81 is connected to prevent it from falling off. The pressure component includes a flow regulator 91 and a connecting shaft 92; the flow regulator 91 is cylindrical and is rotatably connected to both ends of the flow regulator 91. The connecting shaft 92 is slidably connected to the mounting groove 2. By setting the flow regulator 91, when the flow regulator 91 is slidably moved, it can compress the hose 6 by cooperating with the mounting groove 2. The pressure component also includes an anti-slip groove 93; several anti-slip grooves 93 are opened on the outside of the flow regulator 91. By setting the anti-slip grooves 93, the anti-slip effect can be improved and it is easy to adjust.

[0030] In passive aspiration mode, the doctor slides the flow regulator 91 in the mounting slot 2 to compress the tubing 6, then vertically inserts the needle 32 at the bottom of the fixing plate 31 into the ophthalmic puncture cannula and into the eye. Then, the pressure on the flow regulator 91 is released, and the through hole on the pressure valve 5 is unobstructed, allowing intraocular fluid or gas to drain out. If the doctor blocks the through hole on the pressure valve 5 with their finger or the rubber stopper 81 fixed to the pressure valve 5 with the connecting rope 82, passive aspiration is obstructed. At this time, pressing the circular airbag-shaped pressure valve 5 can generate a recoil force to release the engaged tissue. In active aspiration mode, the doctor adjusts the flow regulator 91 to completely release the pressure on the tubing 6, connects the connector 72 on the connecting plate 71 at the top of the handle body 1 to the aspiration tube of the ophthalmic surgical machine, inserts the needle 32 into the eye, and blocks the through hole on the pressure valve 5 with their hand or the rubber stopper 81 fixed to the pressure valve 5 with the connecting rope 82. Then, active aspiration can be performed by operating the surgical machine.

[0031] Through the above steps, during the surgical procedure, the pressure valve 5 serves as a key control component. When passive aspiration is required, the pressure component closes the tubing 6. At this time, the surgeon vertically inserts the connector into the ophthalmic puncture cannula and releases the pressure on the pressure valve 5, allowing intraocular fluid or gas to drain naturally through the orifice. In active aspiration mode, the pressure component completely releases the pressure on the tubing 6, connecting the connector to the aspiration system of the surgical machine. The surgeon also inserts the cannula vertically and, by closing the orifice of the pressure valve 5, directly controls the aspiration force through the machine, achieving precise fluid and gas removal. This solves the problem that existing retinal surgery pipettes are divided into active and passive aspiration modes, without integrating both modes on the pipette, resulting in low flexibility and adaptability.

Claims

1. A functionally improved pipette handle for fundus surgery, comprising a handle body (1); characterized in that: It also includes a mounting slot (2), a mounting slot (2) is provided on the right side of the handle body (1), a plug-in component is provided at the bottom of the handle body (1), a connecting pipe (4) is connected to the top of the plug-in component, a press valve (5) is connected to the top of the connecting pipe (4), a through hole is provided on the press valve (5), a plugging mechanism is provided on the press valve (5) at the position corresponding to the through hole, a hose (6) is connected to the top of the press valve (5), a docking component is provided on the top of the handle body (1), and a pressure component is provided inside the mounting slot (2).

2. The functionally improved pipette handle for fundus surgery according to claim 1, characterized in that: The plug-in assembly includes a fixing plate (31) and a needle tube (32); the bottom of the handle body (1) is provided with a fixing plate (31), and the bottom of the fixing plate (31) is equipped with a needle tube (32), which is connected to the connecting tube (4).

3. The functionally improved pipette handle for fundus surgery according to claim 1, characterized in that: The docking assembly includes a connecting piece (71) and a connector (72); the connecting piece (71) is mounted on the top of the handle body (1), and the connector (72) is mounted on the top of the connecting piece (71), and the hose (6) is connected to the connector (72).

4. The functionally improved pipette handle for fundus surgery according to claim 1, characterized in that: The plugging mechanism includes a leak-proof component and a connecting component. The leak-proof component is used to close the through hole, and the connecting component is used to connect the leak-proof component and the press valve (5).

5. The functionally improved pipette handle for fundus surgery according to claim 4, characterized in that: The leak-proof assembly includes a rubber stopper (81); the rubber stopper (81) is engaged inside the through hole of the press valve (5).

6. The functionally improved pipette handle for fundus surgery according to claim 5, characterized in that: The connecting assembly includes a connecting rope (82); two connecting ropes (82) are connected to the rubber stopper (81), and the ends of the connecting ropes (82) are fixed to the press valve (5).

7. The functionally improved pipette handle for fundus surgery according to claim 1, characterized in that: The pressure assembly includes a flow regulator (91) and a connecting shaft (92); the flow regulator (91) is provided inside the mounting groove (2). The flow regulator (91) is cylindrical. The front and rear ends of the flow regulator (91) are rotatably connected to the connecting shaft (92). The connecting shaft (92) is slidably connected to the mounting groove (2).

8. A functionally improved pipette handle for fundus surgery according to claim 7, characterized in that: The pressure assembly also includes anti-slip grooves (93); several anti-slip grooves (93) are provided on the outer side of the flow regulator (91).

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