Improved high-frequency electrocoagulation scalpel

Abstract

The utility model discloses an improved high-frequency electrocoagulation scalpel, which relates to the field of medical appliances and comprises a scalpel handle, a scalpel head part arranged at the lower end of the scalpel handle and a conductive wire positioned in the scalpel handle. Wherein a detachable transparent insulating module is arranged on the working surface of the knife head part, is made of a biocompatible high polymer material, and is connected with the knife head part through a rotary buckling mechanism, so that mechanical fixation and electrical isolation are realized. The high-frequency electrocoagulation scalpel has the functions of accurate and synchronous infusion of liquid medicine, visual channel monitoring and modular maintenance, and through structural optimization and innovation of a control system, the operation efficiency and safety in an operation are substantially improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of medical instruments, in particular to an improved high-frequency electrocoagulation scalpel. BACKGROUND

[0002] As a key tool for realizing tissue cutting and hemostasis in surgical operations, the core function of the high-frequency electrocoagulation scalpel relies on the thermal effect of high-frequency current on biological tissues. With the development of minimally invasive surgical techniques, higher requirements for multifunctional integration and precise control of the instrument are put forward in clinical operations. In the prior art, the electrocoagulation scalpel faces the following common technical problems when implementing tissue processing: firstly, when the operation needs to synchronously apply a liquid medicine (such as a hemostatic agent, an irrigation liquid or a local anesthetic), the conventional scheme relies on an external infusion device independent of the electrocoagulation scalpel, which leads to insufficient spatial matching between the liquid medicine action area and the electrocoagulation working surface, poor operation coordination, and easy to cause excessive infusion or uneven coverage of the liquid medicine; secondly, the carbonized products of the tissue caused by high temperature in the electrocoagulation process are easy to adhere to the working surface of the scalpel head, and the traditional fixed insulation component is difficult to quickly disassemble, clean or replace, resulting in low maintenance efficiency of the instrument and cross-infection risk when repeatedly used; thirdly, the liquid medicine delivery system and the high-frequency current lack real-time linkage control mechanism, and the existing time-programmed control mode cannot accurately match the instantaneous start-stop demand of the electrocoagulation operation, leading to waste of the liquid medicine or postoperative residue.

[0003] In the aspect of instrument structure, the conventional integrated liquid infusion electrocoagulation scalpel adopts opaque insulation material to wrap the infusion channel, so that the operator cannot directly monitor the liquid flow state, and there is a risk of channel blockage or bubble accumulation. In addition, the fixed scalpel head design limits the quick replacement ability of the infusion channel, and when local blockage or contamination occurs, the instrument needs to be discarded as a whole, significantly increasing the medical cost. There are also technical defects in the electrical isolation control of high-frequency current and liquid medicine delivery. The common design uses mechanical switch to control separately, which leads to millisecond-level time sequence deviation between electrocoagulation and liquid medicine action, affecting the consistency of tissue processing effect.

[0004] The above technical bottlenecks seriously restrict the application efficiency of the high-frequency electrocoagulation scalpel in fine surgical operations. CONTENT OF THE UTILITY MODEL

[0005] The purpose of the present application is to at least overcome one deficiency existing in the prior art, and to provide an improved high-frequency electrocoagulation scalpel, which has the functions of precise synchronous infusion of liquid medicine, visual channel monitoring and modular maintenance, and realizes substantial improvement in intraoperative operation efficiency and safety through structural optimization and control system innovation.

[0006] To achieve the above-mentioned purpose, the present application discloses an improved high-frequency electrocoagulation scalpel, which comprises a handle, a head part arranged at the lower end of the handle, and a conductive wire located in the handle.

[0007] The working surface of the tool head part is provided with a detachable transparent insulation module made of biocompatible polymer material and connected with the tool head part through a rotating buckle mechanism to realize mechanical fixation and electrical isolation.

[0008] A plurality of through infusion channels are arranged inside the transparent insulation module along the working surface extension direction, the outlet ends of the infusion channels are distributed along the working surface length direction, and an anti-backflow film layer allowing one-way liquid seepage is arranged at the outlet; the inlet ends of the infusion channels converge into a main flow channel; the transparent property of the transparent insulation module allows the operator to directly observe the liquid flow state in the infusion channel and quickly identify bubble or blockage abnormalities.

[0009] The tool handle is internally provided with an insulation conduit, one end of which extends to the tail part of the tool handle to form a connection interface with an external drug liquid supply device, and the other end communicates with the main flow channel in the transparent insulation module through a quick-release sealing joint.

[0010] The conductive wire penetrates the tool handle and is connected with the conductive area of the tool head part, and the middle section of the conductive wire is integrated with an optical coupling detection assembly.

[0011] The optical coupling detection assembly includes a current sensing element, a light emitting unit and a light sensitive receiving unit, wherein the current sensing element is a ring-shaped magnetic core structure with an inner diameter matched with the outer diameter of the conductive wire, an induction coil is wound around the surface of the magnetic core and connected with the driving circuit of the light emitting unit; the light sensitive receiving unit is isolated from the light emitting unit by an insulation barrier and electrically connected with the control end of the external drug liquid supply device. When the conductive wire transmits high-frequency current, the current sensing element generates a driving voltage through electromagnetic induction, triggering the light emitting unit to emit a modulated light signal; after the light sensitive receiving unit receives the light signal, a control level signal is generated, triggering the drug liquid supply device to start drug liquid delivery synchronously. When the high-frequency current is interrupted, the driving voltage disappears, the light emitting unit stops emitting light, and the drug liquid supply device is immediately turned off. The light signal intensity of the light emitting unit is positively correlated with the amplitude of the high-frequency current, ensuring that the drug liquid flow and the electrocoagulation power are dynamically matched.

[0012] Further, the quick-release sealing joint is embedded with an elastic sealing ring to ensure that there is no leakage during drug liquid delivery.

[0013] Further, the rotating buckle mechanism is composed of an L-shaped guide groove of the tool head part base and a protrusion at the bottom of the transparent insulation module, and axial locking is realized by clockwise rotation, and disassembly is completed by axial displacement after reverse rotation.

[0014] Further, a ceramic insulation layer is coated on the contact interface between the transparent insulation module and the tool head part to ensure directional conduction of high-frequency current to the working surface.

[0015] Compared with the prior art, the application significantly improves the clinical operation efficiency and safety of the high-frequency electrocoagulation surgical instrument through the structural innovation of the detachable transparent insulation module and the light coupling detection assembly. The quick disassembly and assembly characteristics of the transparent insulation module realize in-situ maintenance and disinfection during surgery, reduce the risk of cross infection and waste of consumables; its transparent material allows the operator to directly observe the liquid flow state in the infusion channel and timely detect bubble retention or blockage abnormalities to ensure accurate coverage of the drug liquid to the electrocoagulation area. The light coupling detection assembly realizes millisecond-level synchronization of the drug liquid delivery and high-frequency electrocoagulation action through non-contact current detection and electrical isolation control, avoids the timing deviation problem of traditional mechanical switches, and eliminates the interference risk of high-frequency current to the control signal. The combination design of the rotary buckle mechanism and the quick-release sealing joint simplifies the instrument assembly process and improves the efficiency of in-situ bit switching.

[0016] The above-listed beneficial effects are not exhaustive of all advantages. Other potential beneficial effects and detailed technical implementation manners will be further disclosed in the embodiments or other description parts of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0017] Aspects of the present disclosure will become more fully understood from the detailed description and embodiments provided hereinafter and the accompanying drawings, in which the concepts of the present disclosure are illustrated. The position, size, range, and the like of each structure shown in the drawings sometimes are exaggerated for the sake of explanation, and are not necessarily to scale. In the drawings:

[0018] Figure 1 is a structural schematic diagram of an embodiment of the present disclosure.

[0019] Figure 2 is a structural schematic diagram of a transparent insulation module in an embodiment of the present disclosure.

[0020] The respective reference numerals in the drawings are: shank 1, bit part 2, conductive wire 3, transparent insulation module 4, insulated catheter 5, light coupling detection assembly 6. DETAILED DESCRIPTION

[0021] The present disclosure will be described with reference to the accompanying drawings, which show several embodiments of the present disclosure. It should be understood, however, that the present disclosure can be presented in many different forms and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure of the present disclosure more complete and fully convey the scope of protection of the present disclosure to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments.

[0022] It should be understood that in all the drawings, the same reference numerals represent the same elements. In the drawings, the size of some features can be distorted for the sake of clarity.

[0023] It is to be understood that the phraseology and terminology used herein is for the purpose of description and not of limitation. The detailed description used describes and explains to enable one of ordinary skill in the art to

[0024] As used in the description of the disclosure and the appended claims, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. As used herein, the language "includes" and / or "comprises" and / or "containing" and / or "having" and / or "comprised of" and / or "having" and / or "including" and / or "consisting of" and / or "consisting essentially of" and / or the like shall be construed as indicating that the scope of the disclosure is not limited to the listed elements, but rather that the listed elements are included, but not to the exclusion of one or more additional elements. As used herein, the language "and / or" comprises any and all combinations of one or more of the associated listed items.

[0025] Reference will now be made to the drawings, which depict Figure 1 and 2 The present embodiment discloses an exemplary structure of an improved high-frequency electrocoagulation scalpel, which mainly comprises a handle 1, a head 2 and a conductive wire 3. The head 2 is located at the lower end of the handle 1, and the handle 1 is provided with the conductive wire 3. The working surface of the head 2 is equipped with a detachable transparent insulation module 4 made of biocompatible polymer material, which is connected to the head 2 through a rotating buckle mechanism to achieve mechanical fixation and electrical isolation. The transparent insulation module 4 is provided with a through-type infusion channel inside along the extension direction of the working surface, the outlet end of which is distributed along the length direction of the working surface, and a reverse flow prevention film layer is arranged at the outlet end, and the inlet ends of the infusion channels converge into a main flow channel. The handle 1 is provided with an insulated catheter 5, one end of which extends to the tail of the handle 1 to form a connection interface with an external liquid supply device, and the other end is connected to the main flow channel in the transparent insulation module 4 through a quick-release sealing joint. The conductive wire 3 penetrates through the handle 1 and is connected to the conductive area of the head 2, and an optical coupling detection assembly 6 is integrated in the middle section of the conductive wire 3, which includes a current sensing element, a light emitting unit and a light sensitive receiving unit. The current sensing element is of a ring-shaped magnetic core structure, and an induction coil is wound on the surface and connected to the driving circuit of the light emitting unit. The light sensitive receiving unit is isolated from the light emitting unit by an insulating barrier and is electrically connected to the control end of the external liquid supply device.

[0026] It should be noted that the generation and transmission of high-frequency current, the basic structure and working principle of the liquid supply device of the high-frequency electrocoagulation scalpel in the present embodiment all belong to the known technology and existing technology of those skilled in the art, which will not be described in detail herein.

[0027] The handle 1 is the operating body of the high-frequency electric coagulation scalpel, and its design fully considers the comfort and convenience of the operator. The handle 1 is streamlined in overall shape, smooth in surface and has a moderate coefficient of friction, ensuring that the operator will not be affected by the operation precision due to hand fatigue in long-time operation. The handle 1 is made of high-strength, high-temperature-resistant medical-grade engineering plastic, which not only has good mechanical strength and can withstand various external force impacts during operation, but also remains stable in high-temperature and high-pressure environments, meeting the strict disinfection requirements of surgical instruments.

[0028] In the internal structure design of the handle 1, independent chambers for accommodating the conductive wire 3 and the insulating conduit 5 are specially provided to ensure the reasonable layout and stable operation of the components. These chambers are precisely molded by a precision mold, with accurate dimensions that perfectly fit the shape and size of the components, effectively preventing displacement or loosening of the components during use. In addition, the connection interface at the tail of the handle 1 is designed with standardization, and the connection part with the external liquid supply device has good sealing performance and universality, ensuring leak-free connection during liquid delivery, and facilitating quick connection of different brands and models of liquid supply devices.

[0029] The head part 2 is the part of the high-frequency electric coagulation scalpel that directly contacts the tissue, and its design is directly related to the effectiveness and safety of the operation. The shape of the head part 2 is optimized according to different surgical needs, with a smooth and flat working surface that ensures uniform distribution of high-frequency current and avoids excessive tissue damage caused by current concentration. The head part 2 is made of medical-grade metal materials with excellent electrical conductivity and biocompatibility, such as titanium alloy, which can efficiently conduct high-frequency current, achieve rapid coagulation hemostasis, and minimize postoperative tissue reaction and immune rejection.

[0030] In the structural design of the head part 2, a rotating buckle mechanism is specially provided to achieve detachable connection with the transparent insulating module 4. The mechanism is composed of an L-shaped guide groove on the head part base and a protrusion on the bottom of the transparent insulating module. By rotating the transparent insulating module 4 clockwise, the protrusion on the bottom slides along the L-shaped guide groove, finally achieving axial locking; and by rotating it counterclockwise, the protrusion is released from the guide groove, completing the disassembly. This design not only makes operation simple, but also ensures that the transparent insulating module 4 is stably fixed during use and will not loosen due to friction or collision during surgery, thereby ensuring the safety of the operation.

[0031] In addition, the contact interface between the head part 2 and the transparent insulating module 4 is coated with a layer of ceramic insulating layer. This ceramic insulating layer is prepared by advanced plasma spraying technology, with excellent insulating performance and high-temperature resistance, which can ensure that the high-frequency current strictly follows the designed path to the working surface, avoiding accidental damage to the surrounding tissue caused by current leakage, further improving the safety and reliability of the operation.

[0032] The conductive wire 3 is one of the core components of the high-frequency electrocoagulation scalpel, responsible for transmitting high-frequency current from the external power source to the head part 2. The conductive wire 3 is made of multiple strands of ultra-fine medical-grade copper alloy wire twisted together. This structure not only has good electrical conductivity, ensuring low loss of high-frequency current during transmission, but also has excellent flexibility and fatigue resistance, allowing it to adapt to various complex bending and twisting operations during surgery, without breaking or performance degradation due to repeated use.

[0033] On the outer layer of the conductive wire 3, there is a layer of high-strength, high-temperature-resistant insulating material such as polytetrafluoroethylene. This insulating material has excellent dielectric properties and chemical stability, allowing it to work stably for a long time in high-voltage, high-frequency electric field environments, effectively preventing current leakage and ensuring the electrical safety of the operator and the patient. At the same time, the surface of the insulating layer is specially treated to have good lubricity and wear resistance, allowing the conductive wire 3 to smoothly slide in the internal cavity of the handle 1 without damaging the insulating layer or affecting the normal operation of the conductive wire 3 due to friction.

[0034] The transparent insulation module 4 is one of the important innovations of the high-frequency electrocoagulation scalpel of the present application, designed to achieve precise infusion of liquid and real-time observation of the surgical process. The transparent insulation module 4 is made of biocompatible polymer material, which is not only non-toxic and harmless to human tissues, has good biocompatibility, but also has excellent optical and mechanical properties, allowing the operator to clearly observe the liquid flow state inside the module during the operation, while ensuring the structural stability and durability of the module during use.

[0035] In the internal structure design of the transparent insulation module 4, multiple through-type infusion channels are arranged along the working surface extension direction. These infusion channels are made of precision machining technology, with precise size and shape, ensuring uniform distribution and stable flow rate of the liquid during delivery. The outlet ends of the infusion channels are equally distributed along the length direction of the working surface, allowing the liquid to evenly cover the electrocoagulation area for optimal treatment effect. At the same time, the outlet is provided with an anti-backflow film layer that allows one-way liquid seepage. This film layer is made of special materials and processes, with good air permeability and liquid selective permeability, effectively preventing backflow of the liquid during delivery and ensuring precise infusion of the liquid.

[0036] In addition, the main flow channel of the transparent insulation module 4 is reasonably designed, which can converge the inlet ends of each infusion channel together to form a centralized liquid inlet. This design not only facilitates the connection with the insulation conduit 5 inside the handle 1, but also effectively reduces the resistance and dispersion of the drug solution during transportation, improving the efficiency and accuracy of drug solution transportation. During the installation and removal of the transparent insulation module 4, the rotating buckle mechanism between the transparent insulation module 4 and the head part 2 is easy to operate, which can quickly realize the fixation and separation of the module, greatly improving the operation efficiency and flexibility during the operation.

[0037] The insulation conduit 5 is a key component connecting the inside and outside of the handle 1 with the drug solution supply device, and its design directly relates to the stability and safety of drug solution transportation. The insulation conduit 5 is made of medical-grade materials with excellent insulation performance and chemical stability, such as polyether ether ketone (PEEK). This material not only effectively prevents the leakage of high-frequency current during drug solution transportation, ensuring the safety of the operation, but also resists the erosion of various drug solutions, ensuring that the performance does not decrease or damage during long-term use.

[0038] One end of the insulation conduit 5 extends to the tail of the handle 1, forming a connection interface with the external drug solution supply device. The interface is designed with standardization, has good sealing and universality, and can quickly connect with different brands and models of drug solution supply devices, ensuring leak-free connection during drug solution transportation. The other end is connected to the main flow channel in the transparent insulation module 4 through a quick-release sealing joint. The quick-release sealing joint is embedded with an elastic sealing ring, which can ensure leak-free transportation of the drug solution, and facilitate quick disassembly and replacement of the transparent insulation module 4 during the operation interval, improving the continuity and efficiency of the operation.

[0039] The light coupling detection assembly 6 is a key component for realizing the synchronization of drug solution transportation and high-frequency electrocoagulation action, which ingeniously combines electromagnetic induction and photoelectric conversion technology to ensure precise control of drug solution transportation during the operation. The light coupling detection assembly 6 includes a current sensing element, a light emitting unit and a light sensitive receiving unit, wherein the current sensing element is a ring-shaped magnetic core structure with an inner diameter matching the outer diameter of the conductive wire 3. The surface of the magnetic core is wound with an induction coil, which is connected with the driving circuit of the light emitting unit. When the conductive wire 3 transmits high-frequency current, the current sensing element generates a driving voltage through electromagnetic induction, triggering the light emitting unit to emit a modulated light signal.

[0040] The light-emitting unit uses high-brightness and high-stability light-emitting diodes (LEDs) as light sources. The intensity of the light signals emitted by the light-emitting unit is positively correlated with the amplitude of the high-frequency current, and can accurately reflect the changes in the high-frequency current. The light-sensitive receiving unit uses a high-sensitivity light-sensitive sensor, which is isolated from the light-emitting unit by an insulating barrier, ensuring the stability and safety of signal transmission. The light-sensitive receiving unit converts the received light signals into control level signals and transmits them to the control end of the external liquid supply device, triggering the synchronous start of the liquid supply device to initiate liquid delivery. When the high-frequency current is interrupted, the driving voltage disappears, the light-emitting unit stops emitting light, and the light-sensitive receiving unit stops outputting control signals, causing the liquid supply device to shut down, achieving millisecond-level synchronous control of liquid delivery and high-frequency coagulation action.

[0041] In addition, the components of the optical coupling detection assembly 6 are connected and protected by precise circuit design and packaging process, ensuring stable operation and long service life of the entire assembly in a high-frequency electromagnetic field environment. The circuit board uses a multi-layer wiring design, which has good electromagnetic shielding performance, effectively preventing high-frequency current from interfering with control signals and ensuring accurate control of liquid delivery. At the same time, the housing of the assembly is made of high-strength and high-temperature-resistant insulating material, which can withstand various external force impacts and high-temperature disinfection during surgery, ensuring the safety and reliability of the surgery.

[0042] In a specific implementation, taking a neurosurgery as an example, when it is necessary to coagulate and stop bleeding of brain microvessels and simultaneously infuse protective liquid, the tail interface of the handle 1 of the high-frequency coagulation scalpel is connected to the liquid supply device. At this time, the transparent insulating module 4 has been installed on the head 2 of the scalpel by rotating the buckle mechanism clockwise, and the main flow passage of the internal infusion channel is connected to the insulating catheter 5 through the quick-release sealing joint. When high-frequency current is transmitted to the head 2 of the scalpel through the conductive wire 3 for coagulation operation, the current sensing element in the optical coupling detection assembly 6 senses the current change and triggers the light-emitting unit to emit a modulated light signal positively correlated with the amplitude of the high-frequency current. After the light-sensitive receiving unit receives the light signal, it generates a control level signal, triggering the liquid supply device to deliver protective liquid at a flow rate dynamically matched with the coagulation power. The protective liquid is distributed to each infusion channel through the main flow passage and finally exudes from the equidistantly distributed outlet ends, covering the coagulation area and preventing thermal damage. The operator can observe the flow state of the protective liquid in real time through the transparent insulating module 4, ensuring that there are no air bubbles or blockages. During the surgery, if it is necessary to replace the transparent insulating module 4, it can be quickly detached by reversing the buckle mechanism, and then disinfected or replaced to avoid cross-infection.

[0043] Compared with the traditional high-frequency electrocoagulation scalpel, the scalpel in the embodiment has significant advantages in clinical use. The traditional scalpel usually does not have the function of synchronous delivery of liquid medicine, and when dealing with complex bleeding, electrocoagulation and liquid medicine injection need to be performed respectively, which is cumbersome and the time sequence is easy to be disordered. The scalpel realizes millisecond-level synchronization of liquid medicine delivery and high-frequency electrocoagulation through the optical coupling detection assembly 6, greatly improving the operation efficiency. The innovative design of the transparent insulation module 4 not only facilitates intraoperative observation, but also reduces maintenance cost and infection risk, and is especially suitable for fine operation scenes such as ophthalmology, otolaryngology, etc., providing more accurate and safe operation tools for operators.

[0044] Although exemplary embodiments of the present disclosure have been described, it will be understood by those skilled in the art that various changes and modifications can be made to the exemplary embodiments of the present disclosure without departing from the spirit and scope of the present disclosure in essence. Therefore, all changes and modifications are included in the protection scope of the present disclosure defined by the claims. The present disclosure is defined by the appended claims, and equivalents of these claims are also included.

Claims

1. An improved high-frequency electrocoagulation scalpel, characterized in that, The high-frequency electrocoagulation scalpel includes a handle, a blade head located at the lower end of the handle, and a conductive wire located inside the handle. The working surface of the blade head is equipped with a detachable transparent insulating module. This module is made of biocompatible polymer material and is connected to the blade head through a rotating buckle mechanism to achieve mechanical fixation and electrical isolation. The transparent insulating module has multiple through-type infusion channels inside, extending along the working surface. The outlet ends of the infusion channels are distributed along the length of the working surface, and a backflow prevention membrane layer that allows liquid to seep out in one direction is provided at the outlet. The inlet ends of each infusion channel converge into a main channel. The handle is equipped with an insulating conduit. One end of the conduit extends to the tail of the handle to form a connection interface with an external liquid supply device, and the other end is connected to the main channel in the transparent insulating module through a quick-release sealing joint. The conductive wire passes through the handle and connects to the conductive area of ​​the head of the tool. An optical coupling detection component is integrated in the middle section of the conductive wire. The optical coupling detection assembly includes a current sensing element, a light-emitting unit, and a photosensitive receiving unit. The current sensing element is a ring-shaped magnetic core structure with its inner diameter adapted to the outer diameter of the conductive wire. An induction coil is wound on the surface of the magnetic core and connected to the driving circuit of the light-emitting unit. The photosensitive receiving unit is isolated from the light-emitting unit through an insulating barrier and is electrically connected to the control terminal of an external liquid supply device.

2. The improved high-frequency electrocoagulation scalpel as described in claim 1, characterized in that, The quick-release sealing joint has an embedded elastic sealing ring.

3. The improved high-frequency electrocoagulation scalpel as described in claim 1, characterized in that, The rotating buckle mechanism consists of an L-shaped guide groove on the blade head base and a protrusion on the bottom of the transparent insulating module. It achieves axial locking by rotating clockwise and disassembly by rotating in the opposite direction.

4. The improved high-frequency electrocoagulation scalpel as described in claim 1, characterized in that, The contact interface between the transparent insulating module and the cutter head is coated with a ceramic insulating layer.

Images