A high-frequency electric knife with anti-adhesion function imitating the structure of Bauhinia bracteatum leaves

Abstract

The present invention discloses a high-frequency electric knife with an anti-adhesion function that mimics a Bauhinia leaf structure, relating to the field of medical device technology. The knife comprises a blade, both the front and back surfaces of which are machined with a bionic Bauhinia leaf structure. The bionic Bauhinia leaf structure comprises a plurality of frames, each of which is a regular hexagon and sequentially interconnected; and a plurality of protrusions disposed within the frames, each of which has at least one layer of nano-hafnium dioxide coating deposited on the surfaces of the frames and the surfaces of the protrusions. The plurality of protrusions within the frames are spaced apart from each other to provide heat dissipation space within the frames for air flow. The present invention can effectively prevent soft tissue adhesion and reduce thermal damage to adjacent normal soft tissue during surgical cutting. The process is simple, the effect is significant, and the device is suitable for mass production.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, in particular to a high-frequency electric knife with an anti-sticking function and an imitation Bauhinia leaf structure. Background Art

[0002] Medical high-frequency electrosurgeries use high-frequency current flowing through tissue to cause charged particles within cells to vibrate violently, generating significant heat. This in turn induces cell rupture and protein coagulation, thereby achieving both incision and hemostasis. Compared to traditional scalpels, high-frequency electrosurgeries offer advantages such as faster cutting speeds, cleaner cuts, less bleeding, and less postoperative pain. In recent years, they have gradually replaced traditional scalpels in various surgical procedures.

[0003] However, relevant data indicate that the heat generated during high-frequency electrosurgical cutting causes blood and soft tissue to dehydrate, scab, and even char. This scab adheres to and coats the surface of the high-frequency electrosurgical unit, potentially reducing current density and hindering energy transfer, which in turn affects cutting and hemostasis. Furthermore, scabs on the surface of the electrosurgical unit can adhere to adjacent tissues, potentially causing secondary tearing and bleeding during surgery, leading to incision deformities. Consequently, surface adhesion and scab formation are a significant obstacle to the high-quality development of high-frequency electrosurgical units and the quality of surgery. Currently, physicians frequently use medical gauze to clean the blood film or scab on the surface of the electrosurgical unit, averaging every 5 to 10 minutes, significantly prolonging surgical time. Chinese Patent CN104161587A discloses a cooling method for a non-stick electrosurgical unit and its head. The method employs a delivery tube within the electrosurgical unit, which drives a coolant through the tube to cool the electrosurgical unit head, maintaining the temperature below 80°C. This invention, which incorporates a tube within a micro-electrosurgical unit, places high demands on the equipment and technology, limiting its applicability. Furthermore, the excessively low temperature makes it difficult to quickly stop bleeding during cutting. Therefore, in order to effectively solve the problem of tissue adhesion and scabbing on the surface of high-frequency electric knife, it is urgent to design a high-frequency electric knife with obvious anti-stick and heat dissipation effect, which does not affect the normal cutting and hemostasis function of the electric knife and has a simple processing method. This is of great significance to improving the quality and safety of surgery. Summary of the Invention

[0004] The present invention aims to address, at least to some extent, one of the aforementioned technical problems in the prior art. To this end, an embodiment of the present invention provides a high-frequency electric scalpel with an anti-adhesion function, imitating the structure of a Bauhinia leaf. This scalpel can effectively prevent soft tissue adhesion during surgical cutting and reduce thermal damage to adjacent normal soft tissue.

[0005] According to an embodiment of the present invention, a high-frequency electric knife with an anti-sticking function imitating a Bauhinia leaf structure includes a blade, both the front and back sides of which are processed with a bionic Bauhinia leaf structure, wherein the bionic Bauhinia leaf structure includes a plurality of frames, each of which is a regular hexagon and is sequentially connected to each other; and a plurality of protrusion structures arranged inside the frames, the surfaces of the frames and the surfaces of the protrusion structures being deposited with at least one layer of nano-hafnium dioxide coating, and the plurality of protrusion structures inside the frames being spaced apart from each other so that there is a heat dissipation space inside the frames for air flow.

[0006] In an optional or preferred embodiment, the frames are connected to form a honeycomb structure as a whole.

[0007] In an optional or preferred embodiment, the side length of the frame is 300 μm, the height is 40 μm, and the distance between two adjacent frames is 100 μm.

[0008] In an optional or preferred embodiment, the protrusion structure is conical, and the multiple protrusion structures inside the frame are evenly arranged.

[0009] In an optional or preferred embodiment, the number of the protrusion structures inside the frame is set to 7 or 19, the bottom diameter of the protrusion structure is 60 μm, the height is 70 μm, and the distance between two adjacent protrusion structures is 120 μm.

[0010] In an optional or preferred embodiment, the bionic Bauhinia leaf structure is formed by etching with a nanosecond fiber laser marking machine, and the etching times are 5 times.

[0011] In an optional or preferred embodiment, the anti-sticking high-frequency electric knife with the imitation Bauhinia leaf structure further includes an insulating plastic handle, and the blade is mounted on the insulating plastic handle.

[0012] In an optional or preferred embodiment, the blade is made of stainless steel, and the bionic Bauhinia leaf structure is distributed at the front end of the blade, with a distribution length of 12 mm and a width of 2.3 mm.

[0013] In an optional or preferred embodiment, the thickness of the nano hafnium dioxide coating is 100-200 nm.

[0014] In an optional or preferred embodiment, the nano-hafnium dioxide coating is obtained by atomic layer deposition.

[0015] Based on the above technical solution, the embodiment of the present invention has at least the following beneficial effects: the above technical solution processes a bionic Bauhinia leaf structure on both the front and back sides of the blade. During the cutting process, the frame in the bionic Bauhinia leaf structure and the protrusion structure located within the frame both play a supporting role, and in combination with the nano-hafnium dioxide coating, reduce the direct contact area between the high-frequency electric knife and the soft tissue, effectively reducing the adhesion and scabbing of soft tissue on the surface of the electric knife; the nano-hafnium dioxide coating can improve the surface hydrophobicity, further reducing the adhesion of soft tissue during surgery; at the same time, the internal space of the frame enhances air flow, improves the heat dissipation performance of the high-frequency electric knife, and significantly reduces the thermal damage to adjacent normal soft tissue during the cutting process. The present invention can effectively prevent soft tissue adhesion and reduce thermal damage to adjacent normal soft tissue during surgical cutting, and has a simple process flow, obvious effects, and is suitable for mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 It is a structural diagram of an embodiment of the present invention;

[0018] Figure 2 This is a diagram showing the structure of the imitation Bauhinia leaf in an embodiment of the present invention;

[0019] Figure 3 yes Figure 2 Cross-section view along the AA direction. DETAILED DESCRIPTION

[0020] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it should not be understood as a limitation on the scope of protection of the present invention.

[0021] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0022] In the description of the present invention, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0023] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0024] Reference Figure 1 , presents a high-frequency electric knife with anti-sticking function imitating the structure of Bauhinia leaf, including a blade 12, and both sides of the blade 12 are processed with a bionic Bauhinia leaf structure 20.

[0025] Combine Figure 2 and Figure 3 The bionic Bauhinia leaf structure 20 includes a plurality of frames 21 and a plurality of protrusion structures 22 disposed inside the frames 21. The frames 21 are regular hexagonal and are sequentially connected to each other. Specifically, the frames 21 are connected to form a honeycomb structure.

[0026] In addition, at least one layer of nano hafnium dioxide coating 23 is deposited on the surface of the frame 21 and the surface of the protrusion structure 22.

[0027] It is understood that the bionic Bauhinia leaf structure 20 is machined on both sides of the blade 12. During the cutting process, the frame 21 of the bionic Bauhinia leaf structure 20 and the protrusion structure 22 located within the frame both provide support. Together with the nano-hafnium dioxide coating 23, this reduces the direct contact area between the high-frequency electric knife and soft tissue, effectively reducing the adhesion and scab formation of soft tissue on the surface of the electric knife. The nano-hafnium dioxide coating enhances the surface's hydrophobicity, further reducing soft tissue adhesion during surgery.

[0028] The multiple protrusions 22 within the frame 21 are spaced apart to create a heat dissipation space within the frame 21 for airflow. This structural solution enhances air flow within the frame 21, improving the heat dissipation performance of the high-frequency electrosurgical unit and significantly reducing thermal damage to adjacent normal soft tissue during cutting. In some embodiments, the protrusions 22 are conical in shape, and the multiple protrusions 22 within the frame 21 are evenly spaced.

[0029] Among the widely planted roadside trees in southern my country, the upper surface of the leaves of the Bauhinia tree is superhydrophobic, with a water droplet contact angle of 163° on its leaves, which can effectively prevent the adhesion of road dust and exhibit a highly efficient self-cleaning function. Based on the principles of bionics, imitating the microstructure of the upper surface of the Bauhinia leaf, a bionic surface microstructure similar to that of a fresh Bauhinia leaf was designed and processed on both sides of the high-frequency electrosurgical blade, and a layer of nano-hafnium dioxide coating was deposited, which can effectively prevent soft tissue adhesion and reduce thermal damage to adjacent normal soft tissue. Test cutting of fresh ex vivo pig liver tissue showed that the high-frequency electrosurgical knife with the anti-adhesion function of the Bauhinia leaf structure can greatly reduce pig liver tissue adhesion and thermal damage to the tissue around the incision.

[0030] Reference Figure 1 The anti-sticking high-frequency electric knife with a Bauhinia leaf structure also includes an insulating plastic handle 11, mounted on a stainless steel blade 12. A bionic Bauhinia leaf structure 20 is located at the front end of blade 12. In a specific embodiment, the bionic Bauhinia leaf structure 20 has a length of 12 mm and a width of 2.3 mm.

[0031] Furthermore, the frame 21 has a side length of 300 μm and a height of 40 μm, with a spacing of 100 μm between adjacent frames 21. The number of protrusions 22 within the frame 21 is set to 7 or 19, with a bottom diameter of 60 μm and a height of 70 μm, and a spacing of 120 μm between adjacent protrusions 22.

[0032] The bionic Bauhinia leaf structure 20 is formed by etching using a nanosecond fiber laser marking machine, with the etching times being 5 times.

[0033] The nano-hafnium dioxide coating 23 has a thickness of 100 to 200 nm and is deposited by atomic layer deposition. Atomic layer deposition, which deposits single-atom layers, allows precise control of film thickness, unaffected by the sample's micromorphology. This method is suitable for coating the imitation Bauhinia leaf structure used in this invention. The nano-hafnium dioxide coating exhibits excellent biocompatibility, high-temperature resistance, and chemical stability, making it suitable for use in high-frequency electrosurgical environments.

[0034] The specific size of the bionic Bauhinia leaf structure 20 is just one example. Those skilled in the art can adjust and test it to obtain a better and reasonable size corresponding to different tissues.

[0035] Working process and principle of the present invention:

[0036] When performing surgery, the doctor inserts the high-frequency electric knife with anti-adhesion function of the imitation Bauhinia leaf structure into the high-frequency electric knife pen and connects it to the high-frequency electric knife power supply controller through a wire. When cutting biological soft tissue, the power supply controller, active wire, electric knife pen, high-frequency electric knife with anti-adhesion function of the imitation Bauhinia leaf structure, human body, loop neutral electrode and loop wire form a loop, and the doctor can use the high-frequency electric knife with anti-adhesion function of the imitation Bauhinia leaf structure of the present invention to remove the diseased tissue. During the cutting process, the frame in the bionic Bauhinia leaf structure and the protrusion structure located in the frame play a supporting role, and with the nano-hafnium dioxide coating, the direct contact area between the high-frequency electric knife and the soft tissue is reduced, and the soft tissue adhesion and scab formation on the surface of the electric knife is effectively reduced; the nano-hafnium dioxide coating can improve the surface hydrophobicity, further reducing the adhesion of soft tissue during surgery; at the same time, the internal space of the frame enhances air flow, improves the heat dissipation performance of the high-frequency electric knife, and significantly reduces the thermal damage to the adjacent normal soft tissue during the cutting process. By trial cutting fresh ex vivo pig liver tissue, compared with the initial high-frequency electric knife, the high-frequency electric knife with anti-adhesion function of the imitation Bauhinia leaf structure in this embodiment inserted into the high-frequency electric knife pen can reduce the soft tissue adhesion mass by 66.4% and reduce the thermal damage area of ​​adjacent tissue by 56.6%, thus achieving the original purpose of the invention.

[0037] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the scope of the present invention.

Claims

1. A high-frequency electric knife with an anti-adhesion function and imitating the structure of a Bauhinia leaf, characterized by: It includes a blade, both sides of which are processed with a bionic Bauhinia leaf structure, wherein the bionic Bauhinia leaf structure includes A plurality of frames, each of which is a regular hexagon and is sequentially connected to each other. After the frames are connected, the whole is arranged in a honeycomb structure. The side length of the frame is 300 μm, the height is 40 μm, and the spacing between two adjacent frames is 100 μm; and Multiple protrusion structures are arranged inside the frame, and at least one layer of nano-hafnium dioxide coating is deposited on the surface of the frame and the surfaces of the protrusion structures. The multiple protrusion structures inside the frame are arranged at intervals to provide a heat dissipation space inside the frame for air flow; the nano-hafnium dioxide coating is obtained by atomic layer deposition.

2. The anti-adhesion high-frequency electric knife with the imitation Bauhinia leaf structure according to claim 1, characterized in that: The protrusion structure is conical, and multiple protrusion structures inside the frame are evenly arranged.

3. The anti-adhesion high-frequency electric knife with the imitation Bauhinia leaf structure according to claim 2, characterized in that: The number of the protrusion structures inside the frame is set to 7 or 19, the bottom diameter of the protrusion structure is 60 μm, the height is 70 μm, and the distance between two adjacent protrusion structures is 120 μm.

4. The high-frequency electric knife with anti-adhesion function according to any one of claims 1 to 3, characterized in that: The bionic Bauhinia leaf structure is formed by etching with a nanosecond fiber laser marking machine, and the etching times are 5 times.

5. The high-frequency electric knife with anti-adhesion function according to any one of claims 1 to 3, characterized in that: The anti-sticking high-frequency electric knife with the imitation Bauhinia leaf structure further comprises an insulating plastic handle, and the blade is mounted on the insulating plastic handle.

6. The anti-adhesion high-frequency electric knife with the imitation Bauhinia leaf structure according to claim 5, characterized in that: The blade is made of stainless steel, and the bionic Bauhinia leaf structure is distributed at the front end of the blade, with a distribution length of 12 mm and a width of 2.3 mm.

7. The anti-adhesion high-frequency electric knife with an imitation Bauhinia leaf structure according to any one of claims 1 to 3, characterized in that: The thickness of the nano hafnium dioxide coating is 100-200 nm.

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