Multifunctional bipolar hemostatic electrocoagulation forceps formed by one-piece injection molding

Abstract

The application discloses an integrally injection-molded multifunctional bipolar hemostatic electrocoagulation forceps, and relates to the technical field of medical surgical instruments, which comprises a forceps body, the forceps body is composed of symmetrical forceps blades, a metal forceps tip is arranged at the front end of the forceps blade, the rear end is an integrally injection-molded handle fixing seat and handle shell, an electrification / water injection channel is arranged in the forceps blade, a water outlet is arranged at the front end, a water injection hose and an electrification cable are connected to the tail of the handle, a threaded lifting adjusting column is arranged between the two forceps blades, a misalignment prevention positioning buckle is arranged at the clamping end of the forceps tip, and an anti-skid groove is integrally formed on the outer side of the handle. The integrally injection molding can reduce the number of parts and the processing cost, and the disposable use can avoid cross infection. The channel formed by the hollow metal pipe integrates the functions of electricity conduction and wound flushing, and the instrument does not need to be frequently replaced. The adjusting column can adjust the clamping force and correct the height deviation of the forceps tip. The positioning buckle prevents the left and right deviation of the forceps tip, and is suitable for the integrated minimally invasive operation of clamping, electrocoagulation and flushing in the narrow operation area of the general surgery department and the neurosurgery department.

Description

Technical Field

[0001] This invention relates to the field of medical surgical instruments, and is particularly applicable to the integrated operation of tissue separation and clamping, bipolar electrocoagulation hemostasis, and simultaneous wound irrigation in narrow surgical areas of general surgery and neurosurgery. Background Technology

[0002] Bipolar electrocoagulation forceps are a commonly used surgical tool, widely used in general surgery and neurosurgery. They can separate and grasp tissues in confined working environments, enabling operations that cannot be performed by human hands or other instruments. Furthermore, with the development of manufacturing capabilities and the different needs of various industries, the forms and functions of forceps are becoming more diversified and multifunctional.

[0003] Existing traditional medical bipolar electrocoagulation forceps have many drawbacks. For example, the handles of traditional electrocoagulation forceps often adopt a split assembly structure, with the plastic shell and the fixing base being processed and assembled separately. They are then assembled using clips, adhesives, and screws. However, this results in many parts, complicated processing procedures, and high manufacturing costs. Moreover, reusable electrocoagulation forceps require high-temperature and high-pressure sterilization after each procedure. The plastic handles are prone to aging, cracking, and deformation due to repeated heat cycles. Sterilization residues can easily lead to cross-infection among patients. Furthermore, existing simple disposable electrocoagulation forceps on the market have a simplified structure and do not have integrated irrigation tubing. Additional irrigation instruments need to be replaced during the procedure, making the operation cumbersome and taking up surgical time.

[0004] In addition, existing electrocoagulation forceps have two elastically fixed arms and the clamping force of the forceps tip cannot be adjusted. When operating on soft tissues of different thicknesses and textures, such as clamping thin soft tissues like microvessels and fragile nerves, clamping too tightly can easily damage normal tissues, while clamping too loosely can easily cause tissue slippage. Furthermore, the forceps tip is prone to unevenness and misalignment due to long-term use or assembly errors, resulting in poor clamping alignment accuracy and affecting the electrocoagulation hemostasis effect. Therefore, this invention provides an integrated injection-molded multifunctional bipolar hemostasis electrocoagulation forceps. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an integrated injection-molded multifunctional bipolar hemostatic electrocoagulation forceps, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: an integrated injection-molded multifunctional bipolar hemostatic electrocoagulation forceps, including a forceps body, wherein the forceps body is composed of two symmetrically arranged forceps blades, each of which has a metal forceps tip at its front end and a handle assembly at its rear end. The handle assembly includes a handle holder and a handle housing. The handle holder is located at the rear end of the tweezers body, and the handle housing is wrapped around the handle holder. Both of the tweezers have an internal power supply / water injection channel, and the front end of both tweezers, located at the tip of the metal tweezers, has a water outlet connected to the power supply / water injection channel. The tail of the handle mounting base is connected to a water injection hose and a power cable; A height-adjustable pincer force adjustment column is symmetrically installed between the two tweezers. The clamping ends of the two tweezers near the water outlet are respectively provided with matching anti-misalignment positioning buckles. When the two metal tweezer tips are closed, the anti-misalignment positioning buckles on both sides engage and limit each other.

[0007] As a further technical solution of the present invention, the adjusting column is a threaded lifting structure. The adjusting column is screwed into the inner side of the tweezers. By rotating the adjusting column, its height can be changed, which is used to adjust the clamping force of the metal tweezers tip and correct the height misalignment of the metal tweezers tip.

[0008] As a further technical solution of the present invention, the outer center of the tweezers body is integrally formed with several anti-slip grooves, which are evenly arranged along the length of the handle shell to increase the grip friction of the hand when wet or bloody, and prevent the instrument from slipping.

[0009] As a further technical solution of the present invention, the anti-misalignment positioning buckle adopts a concave-convex matching and engaging structure to achieve lateral limiting when the metal tweezers tip is closed, prevent the metal tweezers tip from shifting left and right, and improve the alignment accuracy of micro-tissue clamping.

[0010] As a further technical solution of the present invention, the tweezers body is integrally injection molded from heat-resistant and pressure-resistant plastic, and the handle fixing base and handle shell are integrally injection molded from heat-resistant and pressure-resistant plastic.

[0011] As a further technical solution of the present invention, the power supply / water injection channel is a hollow metal tube, the end of which extends to the tail of the metal tweezer tip and communicates with the water outlet, and is fixed to the metal tweezer tip. The metal tweezer tip is integrally formed by powder metallurgy technology and the material is tungsten alloy material. In this way, the metal tweezer tip has a good anti-adhesion effect.

[0012] As a further technical solution of the present invention, one end of the water injection hose is sealed and connected to two power supply / water injection channels. The power supply cable and the metal tweezers tip are electrically connected through the power supply / water injection channels. The hollow metal tube serves as both a conductive carrier to transmit the current of the power supply cable and a water delivery carrier to transport the flushing fluid inside the water injection hose.

[0013] This invention provides an integrated injection-molded multifunctional bipolar hemostatic electrocoagulation forceps, which has the following advantages compared with the prior art: 1. The integrated injection-molded multifunctional bipolar hemostatic electrocoagulation forceps of this design uses an integrated injection molding process to combine the handle shell and handle fixing base, eliminating the need for separate processing and assembly. With fewer parts, the production and assembly costs are significantly reduced. Moreover, the integrated molding process eliminates gaps and dead corners for dirt accumulation. The product is designed for single use and can be directly discarded after the operation, eliminating the need for repeated high-temperature sterilization and completely avoiding the risk of cross-infection to patients caused by high-temperature aging and deformation of plastic and insufficient sterilization.

[0014] 2. The integrated injection-molded multifunctional bipolar hemostatic electrocoagulation forceps designed in this paper have a hollow metal tube integrated structure for the metal forceps tip. The inner cavity serves as both a conductive channel and a water injection channel. Not only can a single set of instruments complete tissue clamping, bipolar electrocoagulation hemostasis, and saline irrigation of the wound, but the narrow surgical field also eliminates the need for frequent instrument changes, reducing the interference of instrument switching on the operation and shortening the operation time. Moreover, the metal forceps tip is made of tungsten material, which has a good anti-adhesion effect.

[0015] 3. The integrated injection-molded multifunctional bipolar hemostatic electrocoagulation forceps designed in this paper utilizes an adjustable pinching force adjustment column to adjust the clamping force of the forceps tip as needed. When clamping fragile nerves and microvascular tissues, the force can be reduced to avoid tissue contusion, while the clamping force can be increased when clamping dense connective tissues to prevent slippage. At the same time, the height adjustment column can correct unevenness and misalignment of the forceps tip caused by long-term use, ensuring uniform electrocoagulation contact and stable hemostasis effect.

[0016] 4. This design features an integrated injection-molded multifunctional bipolar hemostatic electrocoagulation forceps. Matching anti-misalignment positioning buckles are installed at both forceps tips, which interlock to form a lateral limit when closed, preventing lateral displacement of the forceps tips. This facilitates precise clamping and alignment of tiny tissues in confined spaces. The anti-slip grooves on the outer side of the handle ensure stable gripping even with wet or blood-stained hands, preventing instrument slippage and surgical accidents. This effectively prevents intraoperative instrument slippage, avoids puncturing deep tissues, and improves surgical safety. Attached Figure Description

[0017] Figure 1 A schematic diagram of a multifunctional bipolar hemostatic electrocoagulation forceps that is integrally injection molded; Figure 2 A schematic diagram of the installation structure of the water outlet in a one-piece injection-molded multifunctional bipolar hemostatic electrocoagulation forceps; Figure 3 A top view of a one-piece injection-molded multifunctional bipolar hemostatic electrocoagulation forceps; Figure 4 A cross-sectional view of a one-piece injection-molded multifunctional bipolar hemostatic electrocoagulation forceps; Figure 5 A schematic diagram of the installation structure of the energized / water-injected channel in a one-piece injection-molded multifunctional bipolar hemostatic electrocoagulation forceps.

[0018] In the diagram: 1. Tweezers body; 11. Metal tweezers tip; 12. Anti-slip groove; 2. Adjustment post; 3. Anti-misalignment positioning buckle; 4. Handle fixing base; 41. Handle shell; 5. Water injection hose; 51. Power cable; 52. Power / water injection channel; 53. Water outlet. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1-5 The present invention provides a technical solution for an integrated injection-molded multifunctional bipolar hemostasis electrocoagulation forceps: the integrated injection-molded multifunctional bipolar hemostasis electrocoagulation forceps includes a forceps body 1, the forceps body 1 is composed of two symmetrically arranged forceps blades, the forceps body 1 is made of heat-resistant and pressure-resistant plastic through integrated injection molding, the front end of the two forceps blades is provided with metal forceps tips 11, and the rear end is provided with a handle assembly. The handle assembly includes a handle fixing seat 4 and a handle housing 41. The handle fixing seat 4 is located at the rear end of the tweezers body 1, and the handle housing 41 is wrapped around the handle fixing seat 4. The handle fixing seat 4 and the handle housing 41 are integrally injection molded from heat-resistant and pressure-resistant plastic. Both tweezers have an internal power / water channel 52 (i.e., power channel or water channel). The front end of both tweezers, located at the end of the metal tweezer tip 11, has a water outlet 53 (i.e., power outlet or water outlet) that communicates with the power / water channel 52. The tail of the handle fixing base 4 is connected to a water injection hose 5 and a power cable 51. The power / water channel 52 is a hollow metal tube, the end of which extends to the tail of the metal tweezer tip 11 and communicates with the water outlet 53, while being fixed to the metal tweezer tip 11. The metal tweezer tip 11 is integrally formed using powder metallurgy technology, and the material is tungsten alloy. In this way, the metal tweezer tip 11 has a good anti-adhesion effect.

[0021] like Figure 4 and 5 As shown, one end of the water injection hose 5 is sealed and connected to two power / water injection channels 52. The power cable 51 and the metal tweezers tip 11 are electrically connected through the power / water injection channels 52. The hollow metal tube serves as both a conductive carrier to transmit the current of the power cable 51 and a water carrier to deliver the flushing liquid inside the water injection hose 5. In use, the water injection hose 5 is sealed and connected to the inner cavity of the two hollow metal tubes, or the power cable 51 makes conductive contact with the inner wall of the hollow metal tube. A height-adjustable pin 2 is symmetrically installed between the two tweezers. The pin 2 is a threaded lifting structure. The pin 2 is screwed inside the tweezers. By rotating the pin 2, its height can be changed, which is used to adjust the clamping force of the metal tweezer tip 11 and correct the height misalignment of the metal tweezer tip 11.

[0022] The clamping ends of the two forceps near the water outlet 53 are respectively provided with matching anti-misalignment positioning buckles 3. When the two metal forceps tips 11 are closed, the anti-misalignment positioning buckles 3 on both sides engage and limit each other. The anti-misalignment positioning buckles 3 adopt a concave-convex matching and engaging structure to achieve lateral limitation when the metal forceps tips 11 are closed, prevent the metal forceps tips 11 from shifting left and right, and improve the alignment accuracy of micro-tissue clamping.

[0023] The outer center of the tweezers body 1 has several anti-slip grooves 12 integrally formed. The anti-slip grooves 12 are evenly arranged along the length of the handle shell 41 to increase the grip friction of the hand when wet or bloody, and to prevent the instrument from slipping.

[0024] The working principle of this invention is as follows: The designer injection molds the tweezers body 1, the handle fixing base 4, and the handle shell 41 in one piece. After molding, it is a complete single plastic component without splicing, which eliminates the secondary assembly process, greatly reduces the number of parts, simplifies the assembly line processing process, and reduces production and labor costs. Moreover, the anti-slip groove 12 on the outside of the tweezers body 1 is formed simultaneously with the injection molding, eliminating the need for secondary grooving processing in the later stage and simplifying the production steps. Furthermore, the metal tweezers tip 11 is integrally machined from a hollow tungsten tube. The hollow cavity of the hollow tungsten tube serves as an electrical / water injection channel 52. The same hollow tungsten tube simultaneously carries two independent functions of electrical conduction and water delivery, without interference between them, as detailed below: Conductive electrocoagulation principle: The power cable 51 at the end of the handle is electrically connected to the inner wall of the hollow metal tube. The current is conducted along the hollow metal tube to the outlet 53 of the front metal tweezer tip 11. The two metal tweezer tips 11 form a bipolar circuit, which releases electrocoagulation heat to the soft tissue being held, thus completing the hemostasis operation. Moreover, the metal material of the hollow metal tube has stable conductivity, ensuring a uniform electrocoagulation effect.

[0025] Wound irrigation principle: The external saline supply device is connected to the water injection hose 5. The irrigation solution is introduced into the inner cavity of the hollow metal tube through the water injection hose 5 and delivered to the front outlet 53 at a uniform speed along the power supply / water injection channel 52. It directly irrigates the surgical area for bleeding and electrocoagulation of eschar. Moreover, the surgical operation does not require changing the irrigation instruments. Clamping, hemostasis and irrigation can be performed simultaneously. The narrow minimally invasive field of vision reduces the repeated entry and exit of instruments, shortens the operation time and reduces the probability of accidental injury to deep tissues. Furthermore, before use, by rotating the adjustment column 2 clockwise to raise it, the minimum closing gap between the two forceps is increased, requiring medical staff to exert more gripping force to clamp the metal forceps tip 11. The increased clamping force of the metal forceps tip 11 is suitable for clamping fascia and dense connective tissue, preventing tissue slippage during operation. When the adjustment column 2 is rotated counterclockwise to lower it, the closing resistance of the forceps is reduced, and the clamping force of the metal forceps tip 11 is reduced. When clamping microvessels and fragile nerves, it will not cause excessive compression and tissue contusion, thus achieving the clamping force adapting to different soft tissue textures. In addition, the clamping parts of the two metal forceps tips 11 are respectively equipped with concave and convex anti-misalignment positioning buckles 3. When medical staff hold the handle and close the forceps inward to grasp the tissue, the protruding positioning buckle on one side is embedded in the grooved positioning buckle on the other side, forming a lateral rigid limiting constraint. When the anti-misalignment positioning buckles 3 are locked together, the two metal forceps tips 11 cannot be laterally shifted, which completely solves the defects of inaccurate alignment and misalignment of forceps when grasping small tissues with traditional electrocoagulation forceps. In the narrow field of vision operation in neurosurgery, it can accurately grasp small blood vessels and nerve tissues, which greatly improves the operation accuracy of minimally invasive surgery. Moreover, when the surface of the handle is contaminated with blood, saline, or medical lubricant during the operation, the anti-slip groove 12 can store the liquid, preventing the liquid from forming a smooth water film on the contact surface between the hand and the handle, increasing the friction between the skin and the instrument, effectively preventing the instrument from slipping from the hand, eliminating the major medical safety hazard of the instrument puncturing deep organs and blood vessels, and improving the stability of holding the instrument throughout the operation.

[0026] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention are implemented according to conventional methods in the art unless otherwise specified or limited.

Claims

1. A one-piece injection-molded multifunctional bipolar hemostatic electrocoagulation forceps, characterized in that, The tweezers body (1) consists of two symmetrically arranged tweezer blades. The front ends of the two tweezer blades are provided with metal tweezer tips (11), and the rear ends are provided with a handle assembly. The handle assembly includes a handle fixing seat (4) and a handle shell (41). The handle fixing seat (4) is located at the rear end of the tweezers body (1), and the handle shell (41) is wrapped around the handle fixing seat (4). Both of the tweezers have an internal power supply / water injection channel (52), and the front end of both tweezers is provided with a water outlet (53) connected to the power supply / water injection channel (52) at the end of the metal tweezer tip (11). The handle fixing base (4) is connected to a water injection hose (5) and an electrical cable (51) at its tail. A height-adjustable pinching force adjustment column (2) is symmetrically installed between the two tweezers. The clamping ends of the two tweezers near the water outlet (53) are respectively provided with matching anti-misalignment positioning buckles (3). When the two metal tweezer tips (11) are closed, the anti-misalignment positioning buckles (3) on both sides are locked together and limited.

2. The integrated injection-molded multifunctional bipolar hemostatic electrocoagulation forceps according to claim 1, characterized in that, The adjusting column (2) is a threaded lifting structure. The adjusting column (2) is screwed inside the tweezers. By rotating the adjusting column (2), its height can be changed, which is used to adjust the clamping force of the metal tweezers tip (11) and correct the misalignment of the metal tweezers tip (11).

3. The integrated injection-molded multifunctional bipolar hemostatic electrocoagulation forceps according to claim 1, characterized in that, The outer middle part of the tweezers body (1) is integrally formed with several anti-slip grooves (12). The anti-slip grooves (12) are evenly arranged along the length of the handle shell (41) to increase the grip friction of the hand when wet or bloody, and to prevent the instrument from slipping.

4. The integrated injection-molded multifunctional bipolar hemostatic electrocoagulation forceps according to claim 1, characterized in that, The anti-misalignment positioning buckle (3) adopts a concave-convex matching and engaging structure to achieve lateral positioning when the metal tweezer tip (11) is closed, prevent the metal tweezer tip (11) from shifting left and right, and improve the alignment accuracy of micro-tissue clamping.

5. The integrated injection-molded multifunctional bipolar hemostatic electrocoagulation forceps according to claim 1, characterized in that, The tweezers body (1) is integrally injection molded from heat-resistant and pressure-resistant plastic, and the handle fixing seat (4) and handle shell (41) are integrally injection molded from heat-resistant and pressure-resistant plastic.

6. The integrated injection-molded multifunctional bipolar hemostatic electrocoagulation forceps according to claim 1, characterized in that, The power supply / water injection channel (52) is made of hollow metal tube, the end of which extends to the tail of the metal tweezer tip (11) and communicates with the water outlet (53), and is fixed to the metal tweezer tip (11), wherein the metal tweezer tip (11) is made of tungsten material.

7. The integrated injection-molded multifunctional bipolar hemostatic electrocoagulation forceps according to claim 6, characterized in that, One end of the water injection hose (5) is sealed and connected to two power supply / water injection channels (52). The power supply cable (51) and the metal tweezers tip (11) are electrically connected through the power supply / water injection channels (52). The hollow metal tube serves as both a conductive carrier to transmit the current of the power supply cable (51) and a water delivery carrier to deliver the flushing liquid inside the water injection hose (5).

Images