Drip tweezers

Abstract

This utility model discloses a dripping tweezers, comprising: a tweezers body unit, including a dripping tube, a first tweezers body, and a second tweezers body, one end of the dripping tube being mounted on the first tweezers body or the second tweezers body; and a locking unit, including a locking sleeve, the locking sleeve having a first mounting portion and a second mounting portion, the other end of the dripping tube being mounted in the first mounting portion, and the first tweezers body and the second tweezers body being mounted in the second mounting portion. This design enables reliable fixing and precise positioning of the dripping tube.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a dripping forceps. Background Technology

[0002] In modern minimally invasive surgery, especially in high-precision fields such as neurosurgery and microsurgery, high-frequency electrosurgical equipment is widely used for tissue cutting and coagulation hemostasis. During electrocoagulation, the high temperature generated by the high-frequency current can easily cause tissue to dry out, carbonize, or even adhere to the instrument surface. This not only affects the surgical field of vision but may also cause secondary tissue damage and prolong postoperative recovery time.

[0003] In clinical practice, dripping electrocoagulation forceps are commonly used. These forceps integrate liquid cooling functionality with traditional bipolar electrocoagulation forceps, allowing for the continuous dripping of physiological saline or other cooling fluid onto the surgical site while current is applied, effectively reducing local temperature. However, existing dripping electrocoagulation forceps suffer from unreliable fixation and complex assembly processes, impacting production efficiency. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a dripping tweezers that can reliably fix and accurately position a dripping tube.

[0005] According to a first aspect of the present invention, a dripping tweezers includes a tweezers body unit, which includes a dripping tube, a first tweezers body, and a second tweezers body, wherein one end of the dripping tube is mounted on the first tweezers body or the second tweezers body. The locking unit includes a locking sleeve, which has a first mounting portion and a second mounting portion. The other end of the drip tube is installed in the first mounting portion, and the first tweezers and the second tweezers are installed in the second mounting portion.

[0006] The drip forceps according to the embodiments of this utility model have at least the following beneficial effects: By setting an independent first mounting part in the locking unit, a dedicated space for receiving and installing the end of the drip tube is provided, allowing the drip tube to be centrally and securely fixed inside the locking sleeve, avoiding the problems of loosening, displacement, or falling off caused by external binding or adhesive in traditional structures; the locking sleeve integrates a first mounting part for fixing the drip tube and a second mounting part for clamping the first forceps body and the second forceps body, realizing integrated locking of the liquid pipeline system and the mechanical structure of the forceps body. This integrated design simplifies the assembly process, reduces the number of connecting parts, reduces the dependence on operator skills, and is conducive to achieving mass production and standardization; the first mounting part provides axial limiting and radial constraint for the end of the drip tube, and together with the fixed installation of the water supply pipe, ensures that the two are coaxially connected inside the locking sleeve, effectively preventing interface leakage caused by misalignment or vibration, improving the sealing and continuity of liquid delivery, and is particularly suitable for electrocoagulation surgery scenarios with long-term continuous dripping.

[0007] According to some embodiments of this utility model, the first mounting part includes an inlet limiting end and an outlet limiting end. The inlet limiting end is provided with a first through hole for fixing the water supply pipe, and the outlet limiting end is provided with a second through hole for fixing the other end of the drip pipe. The outlet end of the water supply pipe and the inlet end of the drip pipe are connected and conductive within the first mounting part. The connection between the water supply pipe and the drip pipe is accommodated inside the first mounting part, forming a closed connection structure, effectively preventing liquid leakage at the interface, avoiding operational interruptions or electrical safety hazards caused by leakage during surgery, and significantly improving the sealing reliability of the liquid delivery system.

[0008] According to some embodiments of this utility model, the first through hole and the second through hole are circular through holes, with the diameter of the first through hole being A and the diameter of the second through hole being B, satisfying: 3B≤A≤5B. The first through hole can accommodate multiple flexible water supply pipes or pipes with a large outer diameter, while the second through hole precisely matches the outer diameter of the drip pipe to achieve tight fixation. This dimensional difference reasonably allocates the flow channel space, meeting the different functional requirements of high flow rate at the water supply end and high sealing at the connection end.

[0009] According to some embodiments of this utility model, the drip tube is made of stainless steel, and the water supply tube is a transparent flexible rubber tube. The transparent flexible rubber tube, as a water supply tube, allows for direct observation of the internal liquid flow, such as air bubbles, blockages, and changes in flow rate, facilitating real-time monitoring and timely troubleshooting during surgery, thus improving operational reliability.

[0010] According to some embodiments of this utility model, the inner surface of the first tweezers and / or the second tweezers is provided with a slot, and one end of the drip tube is snapped into the slot. The drip tube is embedded into the slot by an elastic snap-fit ​​method, which can achieve quick installation and disassembly without additional fasteners (such as screws, glue or straps), simplifying the assembly process, reducing the skill requirements of operators, and helping to improve production efficiency and product consistency.

[0011] According to some embodiments of this utility model, the slot extends along the length direction of the corresponding forceps body. The slot extending along the length direction has a guiding and positioning function, which can guide the drip tube to be arranged in a straight line along the preset path of the forceps body, ensuring that its water outlet end always maintains a stable relative position with the forceps tip, thereby realizing the precise dripping of liquid into the surgical operation area and meeting the needs of high-precision surgeries such as neurosurgery.

[0012] According to some embodiments of this utility model, the locking unit further includes a mounting block. Positioning notches are respectively provided on opposite sides of the tweezer handles of the first and second tweezer bodies. Positioning protrusions that mate with the positioning notches are provided on both sides of the mounting block. The mounting block is embedded in the positioning notches of the two tweezer handles through the positioning protrusions. The locking sleeve is fitted onto the outside of the tweezer handles, pressing and fixing the first tweezer body, the second tweezer body, and the mounting block. By providing positioning notches on the tweezer handles and matching positioning protrusions on the mounting block, a mechanical positioning and mating structure is formed. This allows for quick and accurate axial and radial positioning of the mounting block and the two tweezer bodies, preventing misalignment, skewness, or loosening during assembly, and significantly improving the assembly accuracy and structural consistency between components.

[0013] According to some embodiments of this utility model, the upper and lower ends of the mounting block are respectively provided with guide wedges, the edge of the locking sleeve is provided with a mounting slot corresponding to the guide wedge, the outer peripheral wall of the mounting block is provided with a guide groove extending axially, and the inner wall of the locking sleeve is provided with a limiting strip that cooperates with the guide groove; when the locking sleeve is configured in the working position, the guide wedge is embedded in the mounting slot, and the limiting strip is accommodated in the guide groove. The cooperation structure of the guide wedge and the mounting slot ensures that the locking sleeve can only be installed at a specific angle during the insertion process, preventing assembly failure or damage to the internal structure due to rotational misalignment, achieving angular alignment between the locking sleeve and the mounting block, ensuring the assembly accuracy and consistency of the overall structure, and the guide groove and the limiting strip extend axially to form an anti-torsion guide structure, which can effectively transmit torque and maintain the relative stillness between the mounting block and the locking sleeve, avoiding the torsion or misalignment of key functional components such as the internal drip pipe and electrode circuit due to external rotational force, and ensuring the stability of the liquid passage and electrical connection.

[0014] According to some embodiments of this utility model, the locking sleeve is a conical sleeve structure, and the diameter of the locking sleeve gradually decreases along the installation direction. During the insertion process, the inner diameter of the conical structure decreases, applying a gradually increasing radial pressure to the outside of the tweezers handle, so that the locking force is gradually built up along the axial direction, avoiding damage to the tweezers body or internal components (such as the drip tube or mounting block) caused by instantaneous overpressure, ensuring a smooth and uniform clamping process, and improving assembly reliability.

[0015] According to some embodiments of this utility model, the outer surface of the locking sleeve is provided with anti-slip texture. The anti-slip texture structure facilitates the application of force by fingers, allowing users to complete the screwing, pushing, or unscrewing actions of the locking sleeve without the need for additional tools.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the dripping tweezers according to an embodiment of the present invention; Figure 2 This is an exploded view of the dripping tweezers according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the locking sleeve according to an embodiment of the present utility model; Figure 4 This is a cross-sectional schematic diagram of the locking sleeve according to an embodiment of the present utility model; Figure 5 This is a schematic diagram of the mounting block according to an embodiment of the present utility model.

[0018] Reference numerals: 100 tweezers body unit; 110 locking unit; 120 first tweezers body; 130 second tweezers body; 140 drip tube; 150 mounting block; 160 locking sleeve; 170 water outlet limiting end; 180 water inlet limiting end; 190 second mounting part; 200 first mounting part; 210 limiting strip; 220 mounting slot; 230 guide inclined block; 240 positioning protrusion; 250 guide groove. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0020] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0022] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly. Those skilled in the art can reasonably determine the specific meaning of these terms in this utility model based on the specific content of the technical solution. In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. In the description of this specification, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0023] Reference Figures 1 to 5 A dripping tweezers, including a tweezers body unit 100, including a dripping tube 140, a first tweezers body 120 and a second tweezers body 130, with one end of the dripping tube 140 mounted on the first tweezers body 120 or the second tweezers body 130. The locking unit 110 includes a locking sleeve 160, which has a first mounting portion 200 and a second mounting portion 190. The other end of the drip tube 140 is installed in the first mounting portion 200, and the first tweezers 120 and the second tweezers 130 are installed in the second mounting portion 190.

[0024] By providing an independent first mounting part 200 in the locking unit 110, a dedicated space for receiving and installing the end of the drip tube 140 is provided, so that the drip tube 140 can be centrally and securely fixed inside the locking sleeve 160, avoiding the problems of loosening, displacement or falling off caused by external binding or gluing in the traditional structure; the locking sleeve 160 integrates the first mounting part 200 for fixing the drip tube 140 and the second mounting part 190 for clamping the first tweezer body 120 and the second tweezer body 130, realizing the integrated locking of the liquid pipeline system and the tweezer body mechanical structure. This integrated design simplifies the assembly process, reduces the number of connecting parts, and lowers the reliance on operator skills, which is conducive to achieving mass production and standardization. The first mounting part 200 provides axial limit and radial constraint for the end of the drip tube 140. Together with the fixed installation of the water supply tube, it ensures that the two are coaxially connected inside the locking sleeve 160, effectively preventing interface leakage caused by misalignment or vibration, improving the sealing and continuity of liquid delivery, and is particularly suitable for electrocoagulation surgery scenarios with long-term continuous dripping.

[0025] The first mounting section 200 includes an inlet limiting end 180 and an outlet limiting end 170. The inlet limiting end 180 is provided with a first through hole for fixing the water supply pipe, and the outlet limiting end 170 is provided with a second through hole for fixing the other end of the drip pipe 140. The outlet end of the water supply pipe and the inlet end of the drip pipe 140 are connected and conductive within the first mounting section 200. The connection between the water supply pipe and the drip pipe 140 is accommodated inside the first mounting section 200, forming a closed connection structure, which effectively prevents liquid leakage at the interface, avoids operational interruptions or electrical safety hazards caused by leakage during surgery, and significantly improves the sealing reliability of the liquid delivery system.

[0026] During the assembly of the dripping tweezers, the water supply pipe is first inserted into the first through hole from the water inlet limiting end 180, and stably fixed within the water inlet limiting end 180. The water outlet end of the water supply pipe extends into the internal cavity of the first mounting part 200. Simultaneously, the other end of the dripping pipe 140 is inserted into the second through hole of the water outlet limiting end 170 and fixed within the water outlet limiting end 170. At this point, the water outlet end of the water supply pipe and the water inlet end of the dripping pipe 140 are axially connected within the internal cavity of the first mounting part 200, forming a continuous liquid channel. When an external liquid supply device (such as an infusion bottle or pump) is activated, the liquid is transported through the water supply pipe to its outlet end, enters the dripping pipe 140 through the interface, and is then transported to the tweezers tip via the dripping pipe 140, achieving continuous and controllable dripping operation.

[0027] The water supply pipe and the drip pipe 140 are smoothly connected in the closed chamber, with a natural flow transition and no obvious steps or necks. This effectively reduces the local resistance when the liquid passes through the interface, prevents turbulence or bubble accumulation, and ensures the stability and continuity of the drip flow.

[0028] The first and second through holes are circular, with diameter A for the first through hole and diameter B for the second through hole, satisfying 3B≤A≤5B. The first through hole can accommodate multiple flexible water supply pipes or pipes with large outer diameters, while the second through hole precisely matches the 140mm outer diameter of the drip pipe for a tight fixation. This dimensional difference rationally allocates the flow channel space, meeting the different functional requirements of high flow rate at the water supply end and high sealing at the connection end.

[0029] During the assembly of the dripping tweezers, the flexible water supply tube is inserted into the first through hole from the water inlet limiting end 180. Since the first through hole is a circular through hole with a diameter of A, its size matches the outer diameter of the water supply tube, achieving axial positioning and radial fixation. The water outlet end of the water supply tube extends into the internal cavity of the first mounting part 200. Simultaneously, the other end of the dripping tube 140 is inserted into the second through hole at the water outlet limiting end 170. The second through hole is a circular through hole with a diameter of B, forming a tight fit with the outer diameter of the dripping tube 140, achieving stable installation. The two tubes are joined together inside the first mounting part 200, forming a continuous flow channel.

[0030] During use, the liquid is supplied by an external liquid supply device through a water supply pipe to its outlet end, and then enters the drip pipe 140 through the interface. Since the diameters of the first through hole and the second through hole satisfy the ratio 3B≤A≤5B, the first through hole provides sufficient installation space and insertion freedom for the water supply pipe, while the second through hole provides high-precision positioning for the drip pipe 140, ensuring the stability and reliability of the docking area, and the liquid is continuously and controllably delivered along the drip pipe 140 to the tip of the tweezers.

[0031] The first through hole retains a large space, which can accommodate multiple small-diameter water supply pipes or integrated signal lines, air circuits and other auxiliary function channels when necessary, reserving a structural foundation for subsequent product upgrades or multi-functional integration, and improving design scalability.

[0032] The drip tube (140) is made of stainless steel, while the water supply tube is a transparent flexible rubber tube. This transparent flexible rubber tube allows for direct observation of the internal liquid flow, such as air bubbles, blockages, and changes in flow rate, facilitating real-time monitoring and timely troubleshooting during surgery, thus improving operational reliability.

[0033] The stainless steel material has a high elastic modulus and bending strength, which makes the drip tube 140 less prone to permanent deformation or bending when subjected to slight external force impact or the opening and closing of the forceps. It can maintain the preset liquid dispensing angle and position for a long time, meeting the stringent requirements of high-precision surgery such as neurosurgery for liquid dripping and positioning.

[0034] The inner surfaces of the first tweezers 120 and / or the second tweezers 130 are provided with slots, and one end of the drip tube 140 is snapped into the slot. The drip tube 140 is embedded into the slot by a flexible snap-fit ​​method, which can achieve quick installation and disassembly without the need for additional fasteners (such as screws, glue or straps), simplifying the assembly process, reducing the skill requirements of operators, and helping to improve production efficiency and product consistency.

[0035] During the assembly of the dripping tweezers, one end of the stainless steel dripping tube 140 is inserted into a slot on the inner side of either the first tweezer body 120 or the second tweezer body 130 along its length. The inner wall of the slot has a certain elastic deformation capacity or an inlet guiding structure. When the outer wall of the dripping tube 140 contacts the inlet of the slot, a slight elastic expansion occurs, allowing the dripping tube 140 to slide smoothly into the slot cavity. Once fully embedded, the side wall of the slot returns to its original shape, forming a circumferential or lateral covering constraint on the dripping tube 140, achieving reliable snap-fit ​​fixation.

[0036] During use, the drip tube 140 is stably attached to the inside of the forceps body through the snap-fit ​​structure and moves synchronously with the forceps body. Even when the forceps are frequently opened and closed or when there is vibration caused by hand operation, the drip tube 140 can still remain in the preset position, ensuring that the water outlet is always aligned with the surgical area, so as to achieve continuous and precise liquid dripping.

[0037] The snap-fit ​​structure eliminates the need for threaded holes or additional bonding surfaces on the tweezers body, preserving the integrity and mechanical properties of the original structure and avoiding stress concentration or material fatigue caused by drilling.

[0038] The slot extends along the length of the corresponding forceps body. The slot extending along the length direction has a guiding and positioning function, which can guide the drip tube 140 to be arranged in a straight line along the preset path of the forceps body, ensuring that its water outlet end always maintains a stable relative position with the forceps tip, thereby realizing the precise dripping of liquid to the surgical operation area, meeting the needs of high-precision surgeries such as neurosurgery.

[0039] During the assembly of the dripping tweezers, one end of the dripping tube 140 is inserted into the slot entrance from the tail of the tweezers body and pushed forward along the extension direction of the slot. Since the slot extends continuously along the length of the tweezers body, its inner wall forms a guide path that is essentially parallel to the axis of the tweezers body. During insertion, the dripping tube 140 is continuously constrained by the side wall of the slot and is naturally guided to the preset installation position. This process achieves stable placement of the dripping tube 140 along the axial direction of the tweezers body without additional adjustment or positioning operations. The locking unit 110 also includes a mounting block 150. Positioning notches are provided on opposite sides of the handles of the first tweezers 120 and the second tweezers 130. Positioning protrusions 240 that mate with the positioning notches are provided on both sides of the mounting block 150. The mounting block 150 is embedded in the positioning notches of the two tweezers handles through the positioning protrusions 240. A locking sleeve 160 is fitted onto the outside of the tweezers handles, pressing and fixing the first tweezers 120, the second tweezers 130, and the mounting block 150. By providing positioning notches on the tweezers handles and matching positioning protrusions 240 on the mounting block 150, a mechanical positioning and mating structure is formed. This allows for quick and accurate axial and radial positioning of the mounting block 150 and the two tweezers, preventing misalignment, skewness, or loosening during assembly, and significantly improving the assembly accuracy and structural consistency between components.

[0040] During the assembly of the dripping tweezers, the positioning protrusions 240 on both sides of the mounting block 150 are first aligned with the positioning notches on the opposite sides of the handles of the first tweezer body 120 and the second tweezer body 130, respectively. The mounting block 150 is then inserted between the two tweezer bodies radially or axially. After the positioning protrusions 240 slide into the positioning notches, the mounting block 150 and the two tweezer bodies are initially positioned axially and circumferentially, restricting their relative movement. Subsequently, the locking sleeve 160 is slipped onto the outside of the tweezer handle and pushed forward axially. With the clamping action of the locking sleeve 160, its inner wall applies radial pressure to the outside of the tweezer handle, so that the first tweezer body 120, the second tweezer body 130, and the mounting block 150 in the middle are clamped and fixed as a whole, forming a stable and reliable connection structure. This clamping structure can effectively resist the alternating stress generated by the opening and closing operation of the tweezers, prevent the mounting block 150 from loosening or falling off, and ensure that the internal functional components (such as the connecting end of the dripping tube 140) remain in a stable connection state.

[0041] The upper and lower ends of the mounting block 150 are respectively provided with guide inclined blocks 230, and the edge of the locking sleeve 160 is provided with a mounting slot 220 corresponding to the guide inclined block 230. The outer peripheral wall of the mounting block 150 is provided with a guide groove 250 extending axially, and the inner wall of the locking sleeve 160 is provided with a limiting strip 210 that cooperates with the guide groove 250. When the locking sleeve 160 is installed in the working position, the guide inclined block 230 is embedded in the mounting slot 220, and the limiting strip 210 is accommodated in the guide groove 250. The mating structure of the guide wedge 230 and the mounting bayonet 220 ensures that the locking sleeve 160 can only be installed at a specific angle during the insertion process, preventing assembly failure or damage to the internal structure due to rotational misalignment. It also achieves angular alignment between the locking sleeve 160 and the mounting block 150, ensuring the assembly accuracy and consistency of the overall structure. The guide groove 250 and the limiting strip 210 extend axially to form an anti-torsion guide structure, which can effectively transmit torque and maintain the relative stillness between the mounting block 150 and the locking sleeve 160. This prevents key functional components such as the internal drip pipe 140 and electrode circuit from being twisted or misaligned due to external rotational force, ensuring the stability of the liquid passage and electrical connection.

[0042] During the assembly of the dripping tweezers, the mounting block 150 is initially positioned by inserting its positioning protrusions 240 on both sides into the positioning notches of the first tweezer body 120 and the second tweezer body 130. Then, the locking sleeve 160 is inserted from the outside of the tweezer handle. The mounting slot 220 on the edge of the locking sleeve 160 is aligned with the guide ramps 230 on the upper and lower surfaces of the mounting block 150. As the locking sleeve 160 is pushed forward, the guide ramps 230 slide along the mounting slots 220 and gradually embed themselves within them. Simultaneously, the limiting strip 210 on the inner wall of the locking sleeve 160 is aligned with the guide groove 250 on the outer peripheral wall of the mounting block 150, slides axially into the groove, and is accommodated within it.

[0043] During the insertion process, the inclined surface of the guide block 230 and the mounting slot 220 provides radial guidance, ensuring that the locking sleeve 160 is assembled in place at the correct circumferential angle; the axial engagement of the limiting strip 210 and the guide groove 250 provides dual constraint in both the circumferential and axial directions. When the locking sleeve 160 is fully pushed into the working position, the guide block 230 is fully embedded in the mounting slot 220, the limiting strip 210 is fully accommodated in the guide groove 250, and the locking sleeve 160 presses and fixes the tweezer handle and the mounting block 150 together, completing the assembly.

[0044] The locking sleeve 160 has a tapered sleeve structure, and its diameter gradually decreases along the installation direction. During the insertion process, the inner diameter of the tapered structure decreases, applying a gradually increasing radial pressure to the outside of the tweezers handle. This allows the locking force to be gradually built up along the axial direction, avoiding damage to the tweezers body or internal components (such as the drip tube 140 and the mounting block 150) caused by instantaneous overpressure. This ensures a smooth and uniform clamping process and improves assembly reliability.

[0045] During the assembly of the dripping tweezers, the locking sleeve 160 is slowly inserted axially with its large end facing the root of the tweezer handle. Since the locking sleeve 160 is a conical sleeve structure, its inner diameter gradually decreases from the inlet end to the outlet end. When the locking sleeve 160 is inserted onto the outside of the tweezer handle, its inner wall gradually contacts the surface of the tweezer handle and applies radial pressure. As the insertion distance increases, the compression of the tweezer handle by the locking sleeve 160 gradually increases, eventually reaching the clamping force required by the design when fully assembled. This process achieves stable clamping and fixing of the first tweezer body 120, the second tweezer body 130, and the internal mounting block 150 without the need for additional tools or the application of strong external force.

[0046] The outer surface of the locking sleeve 160 is provided with anti-slip texture. The anti-slip texture structure makes it easy for the fingers to apply force, allowing the user to complete the screwing, pushing, or unscrewing of the locking sleeve 160 without the need for additional tools.

[0047] During the assembly or disassembly of the dripping tweezers, the operator directly grasps the outer side of the locking sleeve 160 with their hand, utilizing the anti-slip texture on its surface to increase the friction between the hand and the sleeve. When the locking sleeve 160 needs to be fitted onto the tweezer handle for clamping and fixing, the fingers apply axial pushing force, and the anti-slip texture effectively prevents slippage, ensuring a smooth and controllable pushing action. When the locking sleeve 160 needs to be disassembled for maintenance or replacement of internal components, the fingers apply reverse pulling or rotational force, and the anti-slip texture provides sufficient grip support, allowing the locking sleeve 160 to be smoothly removed. The entire process can be completed without the aid of wrenches, pliers, or other auxiliary tools.

[0048] During assembly, the dripping tweezers of this invention are first assembled by inserting one end of a stainless steel dripping tube 140 into a slot along the inner side of the first tweezers body 120 or the second tweezers body 130. The slot extends along the length of the tweezers body, providing guidance and continuous support for the dripping tube 140, ensuring its stable placement near the tweezers tip. The other end of the dripping tube 140 extends to the end of the tweezers handle. Simultaneously, a transparent soft rubber tube is used as a water supply tube, inserted from the water inlet limiting end 180 into the first through hole of the first mounting part 200, with its outlet end extending into the internal cavity of the first mounting part 200.

[0049] Subsequently, the positioning protrusions 240 on both sides of the mounting block 150 are respectively inserted into the positioning notches on the opposite sides of the handles of the first tweezers 120 and the second tweezers 130, achieving preliminary axial and radial positioning of the mounting block 150 and the two tweezers. The guide wedges 230 on the upper and lower end faces of the mounting block 150 are aligned with the mounting slots 220 on the edge of the locking sleeve 160, and the guide grooves 250 on the outer peripheral wall are aligned with the limiting strips 210 on the inner wall of the locking sleeve 160. The locking sleeve 160 is inserted from the outside of the tweezer handle, and its tapered structure (the diameter gradually decreases along the installation direction) applies progressive radial pressure to the tweezer handle during the insertion process. As the locking sleeve 160 goes deeper, the guide wedges 230 are fully inserted into the mounting slots 220, and the limiting strips 210 slide into the guide grooves 250, achieving circumferential positioning and anti-torsional constraint, and finally pressing and fixing the first tweezers 120, the second tweezers 130, and the mounting block 150 as a whole.

[0050] At this point, the outlet end of the water supply pipe and the inlet end of the drip pipe 140 are connected inside the first mounting part 200 to form a continuous flow channel. An external liquid supply device (such as an infusion bottle or a micro pump) is connected to the water supply pipe, and the coolant is delivered through a transparent soft rubber tube, enters the stainless steel drip pipe 140 through the interface inside the first mounting part 200, and is delivered to the tip of the tweezers along the guide path of the slot. During the electrocoagulation operation, coolant is continuously dripped to prevent tissue carbonization or adhesion.

[0051] After the procedure, the locking sleeve 160 can be disassembled in reverse to remove the mounting block 150 and tubing components, facilitating cleaning, replacement, or sterilization, and enabling reuse.

[0052] The connection between the water supply pipe and the drip pipe 140 is housed within the first mounting section 200, forming a closed connection structure. This effectively prevents liquid leakage at the interface, avoiding operational interruptions or electrical safety hazards caused by leakage, and significantly improving the sealing reliability of the liquid delivery system. The water supply pipe and the drip pipe 140 are directly connected within the first mounting section 200, resulting in a continuous flow path with few bends and low flow resistance, preventing air bubble retention or flow fluctuations. Combined with the high rigidity of the stainless steel drip pipe 140, this ensures precise liquid outlet positioning and stable drip rate, meeting the needs of high-precision surgeries such as neurosurgery.

[0053] Employing a plug-in, non-permanent connection structure, eliminating the need for adhesives or welding, the drip tube 140, water supply tube, and mounting block 150 can all be easily disassembled and assembled. The transparent, soft tubing facilitates observation of fluid flow, such as air bubbles or blockages, enabling real-time monitoring and troubleshooting during surgery, thus improving operational reliability and maintenance efficiency. The positioning notch and positioning protrusion 240 work together to achieve axial / radial alignment between the mounting block 150 and the forceps body; the guide wedge 230 and mounting bayonet 220 ensure a unique assembly angle for the locking sleeve 160; the guide groove 250 and the limiting strip 210 form an anti-torsion guiding structure. These multiple mechanisms ensure assembly accuracy and consistency between components, preventing twisting or misalignment of functional parts (such as the drip tube 140 and electrode wires).

[0054] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A drop-letting forceps, characterized by comprising: include: The forceps unit includes a drip tube, a first forceps body, and a second forceps body, with one end of the drip tube mounted on the first forceps body or the second forceps body. The locking unit includes a locking sleeve, which has a first mounting portion and a second mounting portion. The other end of the drip tube is installed in the first mounting portion, and the first tweezers and the second tweezers are installed in the second mounting portion.

2. The drop-let forceps according to claim 1, wherein The first mounting part includes an inlet limiting end and an outlet limiting end. The inlet limiting end is provided with a first through hole for fixing the water supply pipe, and the outlet limiting end is provided with a second through hole for fixing the other end of the drip pipe. The outlet end of the water supply pipe and the inlet end of the drip pipe are connected and communicated within the first mounting part.

3. The drop-let forceps according to claim 2, wherein The first through hole and the second through hole are circular through holes. The diameter of the first through hole is A and the diameter of the second through hole is B, satisfying: 3B≤A≤5B.

4. The drop-let forceps according to claim 2, wherein The drip pipe is made of stainless steel, and the water supply pipe is a transparent flexible rubber tube.

5. The drop-let forceps according to claim 1, wherein The inner side of the first tweezers and / or the second tweezers is provided with a slot, and one end of the drip tube is snapped into the slot.

6. The dripping tweezers according to claim 5, characterized in that, The slot extends along the length of the corresponding tweezers.

7. The drop-let forceps according to claim 1, wherein The locking unit further includes a mounting block. The first tweezers and the second tweezers have positioning notches on opposite sides of their handles. The mounting block has positioning protrusions on both sides that cooperate with the positioning notches. The mounting block is embedded in the positioning notches of the two tweezers through the positioning protrusions. The locking sleeve is fitted on the outside of the tweezers handles to press and fix the first tweezers, the second tweezers, and the mounting block.

8. The drop-let forceps according to claim 7, wherein The upper and lower ends of the mounting block are respectively provided with guide wedges, and the edge of the locking sleeve is provided with a mounting slot corresponding to the guide wedge. The outer peripheral wall of the mounting block is provided with a guide groove extending along the axial direction, and the inner wall of the locking sleeve is provided with a limiting strip that cooperates with the guide groove. When the locking sleeve is configured in the working position, the guide wedge is embedded in the mounting slot, and the limiting strip is accommodated in the guide groove.

9. The drop-let forceps according to claim 1, wherein, The locking sleeve has a tapered sleeve structure, and the diameter of the locking sleeve gradually decreases along the installation direction.

10. The drop-let forceps according to claim 1, wherein, The outer surface of the locking sleeve is provided with anti-slip texture.

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