Monopole electrocoagulation knife
By employing lightweight materials and a modular design, the monopolar electrocautery knife solves the problems of excessive weight and non-replaceable blade, optimizes visual obstruction, achieves high efficiency and safety in surgery, and reduces the waste of medical resources.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGLUO LANGXI PHOTOELECTRIC TECH CO LTD
- Filing Date
- 2025-02-07
- Publication Date
- 2026-04-28
AI Technical Summary
Existing monopolar electrocautery knives are heavy, have non-replaceable blades, and obstruct the view, affecting surgical precision and safety.
Employing lightweight materials and a modular design, including a transparent body and a detachable conductive blade, it achieves current transmission through a snap-fit structure and optimizes the surgical field of view.
Reduce the burden of operation, improve surgical efficiency and safety, extend the service life, and reduce medical costs.
Smart Images

Figure CN224166389U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of medical devices, and in particular to a monopolar electrocoagulation knife. Background Technology
[0002] In the field of surgical medicine, monopolar electrocautery is a commonly used surgical instrument, primarily for hemostasis and tissue cutting. Current monopolar electrocautery devices are designed with a one-piece structure, meaning that apart from the handle, the entire blade is made of a single metal material. While this design ensures the blade's strength and durability to a certain extent, it also introduces significant problems. First, the one-piece metal structure makes the blade heavier, increasing the surgeon's workload and potentially leading to fatigue during surgery, affecting accuracy and efficiency. Second, because the blade is integrated with the overall structure, once the blade wears or is damaged, the entire device becomes unusable, increasing medical costs and wasting resources.
[0003] Furthermore, the existing design has a hidden problem: the structure of the blade can obstruct the surgeon's view during certain high-precision surgeries. Especially when the surgical area is narrow or delicate, the size and shape of the blade itself can block the surgeon's line of sight, making it difficult to clearly observe the cutting area and increasing the difficulty and risk of the surgery. For surgeries requiring extremely high precision, such as neurosurgery and ophthalmology, this obstruction of vision can lead to misoperation, affect surgical outcomes, and even cause unnecessary harm to the patient.
[0004] The existence of these problems is mainly due to the fact that the design concepts of existing technologies have not fully considered the lightweight, maintainability, and operational precision of surgical instruments. With the advancement of medical technology and the diversification of surgical needs, lightweight and modular design of surgical instruments has become a development trend. Lightweight design can reduce the workload of surgeons and improve the flexibility and precision of surgery; while modular design enables rapid replacement and maintenance of instruments, extends the lifespan of instruments, and reduces medical costs. At the same time, solving the problem of instruments obstructing vision is also a key factor in improving surgical efficiency and safety.
[0005] Therefore, developing a new type of monopolar electrocoagulation knife, using lightweight materials and modular design, and optimizing the blade structure to reduce visual obstruction, can not only solve the weight problem and the defect of non-replaceable blade in existing technologies, but also effectively improve surgical efficiency and reduce the waste of medical resources, which has important clinical application value and economic significance. Utility Model Content
[0006] The purpose of this application is to overcome at least one deficiency of the existing technology and provide a monopolar electrocoagulation knife, which is mainly used for hemostasis and tissue cutting during surgery, especially in surgical fields requiring precise operation and efficient hemostasis. By adopting lightweight materials, modular design, and optimizing the blade structure to reduce visual obstruction, the application solves the problems of heavy blade weight, non-replaceable blade, and visual obstruction in the existing technology, thereby improving the accuracy, efficiency, and safety of surgery.
[0007] To achieve the above objectives, this application discloses a monopolar electrocoagulation knife, which includes a handle, a body, a conductive element, and a detachable conductive blade.
[0008] The handle surface features a non-slip texture to enhance grip stability and operational comfort.
[0009] An insulated, non-metallic body is inserted into and fixed to the handle. Conductive components are embedded inside the body and exposed at the front end of the body to form conductive contact points for transmitting current.
[0010] The conductive blade is detachably snapped onto the edge of the body and electrically connected to the conductive contact point, thereby ensuring that the current can be effectively transmitted to the blade and realize the electrocoagulation function.
[0011] Furthermore, the body is made of polycarbonate or medical-grade PMMA to ensure sufficient mechanical strength and transparency. Specifically, the transparent design of the body not only reduces visual interference during surgery but also improves the precision and safety of the surgery.
[0012] Furthermore, the front end of the body is designed in a streamlined shape to reduce resistance during the surgical process, while its edge is provided with a locking groove for fixing the conductive blade.
[0013] Furthermore, the conductive component is made of highly conductive materials, such as medical-grade stainless steel or titanium alloy, to ensure the stability and efficiency of current transmission; one end of the conductive component is connected to the power interface inside the handle, and the other end extends to the front end of the main body to form a conductive contact point.
[0014] Furthermore, the conductive blade is connected to the main body via a snap-fit structure, facilitating quick replacement and maintenance, extending the instrument's service life, and reducing operating costs.
[0015] Furthermore, the locking structure of the conductive blade includes a pair of symmetrical elastic latches. The inner side of each latch has conductive contacts for electrical connection with the conductive contacts at the front end of the blade. The outer side of the latches has anti-slip textures to facilitate quick disassembly and installation of the blade during surgery.
[0016] Furthermore, the blade is preferably made of a high-hardness, high-wear-resistant conductive material, such as tungsten alloy or gold-plated stainless steel, to ensure its performance stability during long-term use.
[0017] Furthermore, the shape of the blade can be designed in various forms, such as straight blade, curved blade, or hook blade, to meet the needs of different surgical scenarios.
[0018] This application's monopolar electrocoagulation scalpel, through its modular design, enables the detachable and replaceable cutting edge, solving the problem of the non-replaceable cutting edge in traditional integral electrocoagulation scalpels. Simultaneously, the transparent body design optimizes the surgical field of vision, reduces the surgeon's workload, and improves surgical efficiency. This design not only meets the demands of modern surgical instruments for lightweight and high efficiency but also possesses significant economic benefits and clinical application value.
[0019] The beneficial effects listed above are not exhaustive of all advantages. Other potential beneficial effects and detailed technical implementation methods will be further disclosed in the embodiments or other descriptive sections of this application. Attached Figure Description
[0020] A better understanding of various aspects of this disclosure will be achieved by reading the following detailed description in conjunction with the accompanying drawings. The positions, dimensions, and extents of the structures shown in the drawings, etc., do not always represent actual positions, dimensions, and extents. In the drawings:
[0021] Figure 1 This is a schematic diagram of the structure of one embodiment disclosed in this application.
[0022] Figure 2 This is a schematic diagram of the cross-sectional structure of the blade in one embodiment of this application. Detailed Implementation
[0023] The present disclosure will now be described with reference to the accompanying drawings, which illustrate several embodiments of the present disclosure. However, it should be understood that the present disclosure can be presented in many different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure more complete and to fully illustrate 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 further additional embodiments.
[0024] It should be understood that the same reference numerals denote the same elements in all the accompanying drawings. For clarity, the dimensions of certain features may be modified in the drawings.
[0025] It should be understood that the terminology used in this specification is for describing specific embodiments only and is not intended to limit this disclosure. All terms used in this specification (including technical and scientific terms) have the meanings commonly understood by those skilled in the art, unless otherwise defined. For the sake of brevity and / or clarity, techniques, methods, and apparatus known to those skilled in the art may not be discussed in detail; however, where appropriate, such techniques, methods, and apparatus should be considered part of this specification.
[0026] Unless otherwise specified, the singular forms “a,” “the,” and “the” used in this specification include the plural forms. The terms “comprising,” “including,” and “containing” used in this specification indicate the presence of the claimed feature but do not exclude the presence of one or more other features. The term “and / or” used in this specification includes any and all combinations of one or more of the relevant listed items. Example
[0027] See attached document Figure 1 and 2 In this embodiment, the monopolar electrocoagulation knife includes a handle 1, a body 2, a conductive component 3, and a detachable conductive blade 4. The structural connections between these parts are precisely designed and rationally coordinated to achieve effective current transmission and electrocoagulation function.
[0028] Handle 1, as the main operating component, features a non-slip textured surface. This texture effectively enhances grip stability and comfort, especially during prolonged surgical procedures, preventing the handle from slipping and avoiding safety hazards caused by instability. Handle 1 is typically made of high-strength, non-metallic materials that are insulating, such as polypropylene (PP) or nylon. These materials ensure not only strength and lightweight design but also excellent durability.
[0029] The main function of the body 2 is to provide a stable support platform for the handle 1 and the conductive element 3, and to support the conductive element 3 and the detachable conductive blade 4. The body 2 is usually made of polycarbonate or medical-grade PMMA (polymethyl methacrylate) material, which not only has high transparency, but also provides sufficient mechanical strength.
[0030] Specifically, the transparent design of polycarbonate or PMMA reduces visual obstruction during surgery, improving the precision and safety of the procedure. Furthermore, the streamlined front end of the body 2 reduces air resistance during surgery and minimizes its impact on the operation. The side of the body 2 features a snap-fit groove for engaging with the snap-fit structure of the conductive blade 4, ensuring a stable connection between the two.
[0031] The conductive component 3, as the core component for current transmission, is typically made of highly conductive materials, such as medical-grade stainless steel or titanium alloy. The front end of the conductive component 3 is embedded within the body 2, forming a conductive contact point that connects to the conductive blade 4. One end of the conductive component 3 connects to the power interface within the handle 1, while the other end extends to the front end of the body 2, transmitting current through the conductive contact point to the blade 4. The design and material selection of the conductive component 3 aim to ensure the stability and efficiency of current transmission, thereby improving the working performance of the electrocautery knife.
[0032] The conductive blade 4 is connected to the body 2 via a detachable snap-fit structure. This snap-fit structure includes a pair of symmetrical elastic snaps, which connect electrically to conductive contacts at the front end of the body 2 via conductive contacts within the snaps. Conductive contacts are located on the inner side of the snaps to ensure smooth current transmission to the conductive blade 4 during installation. The anti-slip textured design on the outer side of the snaps facilitates quick disassembly and replacement of the blade 4 during surgery, greatly improving operational convenience. Furthermore, the blade 4 is typically made of high-hardness, wear-resistant conductive materials, such as tungsten alloy or gold-plated stainless steel. These materials maintain excellent conductivity over extended use and possess high corrosion resistance, ensuring the stability and lifespan of the blade under various surgical conditions.
[0033] The shape of the conductive blade 4 can be designed in various ways to meet different surgical needs, including straight blades, curved blades, or hook blades. Each blade shape can be selected according to the type of surgery and operational requirements to achieve the optimal electrocoagulation effect. For example, a straight blade is suitable for general cutting operations, a curved blade is suitable for surgical scenarios requiring flexible manipulation, and a hook blade allows for more precise operations in some special areas.
[0034] It should be noted that the design of the snap-fit groove and the snap-fit structure, as well as the connection method between the conductive part 3 and the power interface, are all common structures in the prior art. The relevant design and technical implementation methods are well known to those skilled in the art, so there is no need to disclose them in further detail in this application.
[0035] In summary, this embodiment, through precise design and material selection of each component, ensures the high efficiency and safety of the monopolar electrocoagulation knife in clinical applications. The connection relationships and structural design of each part not only enhance operational stability and comfort but also optimize current transmission efficiency, enabling the electrocoagulation knife to provide excellent performance in various surgical scenarios. The detachable blade design allows users to quickly replace the blade as needed, effectively extending the lifespan of the electrocoagulation knife and reducing maintenance costs. These innovative designs and rational structural combinations give this invention strong market competitiveness and promising clinical application prospects.
[0036] While exemplary embodiments of this disclosure have been described, those skilled in the art will understand that various changes and modifications can be made to the exemplary embodiments of this disclosure without departing from the spirit and scope thereof. Therefore, all changes and modifications are included within the scope of protection of this disclosure as defined by the claims. This disclosure is defined by the appended claims, and equivalents of those claims are also included.
Claims
1. A monopolar electrocautery knife, characterized in that: The electrocautery knife includes a handle, a body, a conductive component, and a detachable conductive blade. The handle surface has an anti-slip texture; An insulated, non-metallic body is inserted into and fixed to the handle. Conductive components are embedded inside the body and exposed at the front end of the body to form conductive contact points for transmitting current. The conductive blade is detachably snapped onto the edge of the body and electrically connected to the conductive contact point, thereby ensuring that the current can be effectively transmitted to the blade and realize the electrocoagulation function. The substrate is made of polycarbonate or medical-grade PMMA.
2. The monopolar electrocautery knife as described in claim 1, characterized in that: The front end of the body is designed in a streamlined shape, and its edge is provided with a snap-fit groove for fixing the conductive blade.
3. The monopolar electrocautery knife as described in claim 1, characterized in that: One end of the conductive component is connected to the power interface inside the handle, and the other end extends to the front of the main body to form a conductive contact point.
4. The monopolar electrocautery knife as described in claim 1, characterized in that: The conductive blade is connected to the body via a snap-fit structure. The snap-fit structure of the conductive blade includes a pair of symmetrical elastic snaps, and the inner side of the snaps is provided with conductive contacts for electrical connection with the conductive contact points at the front end of the body.