High frequency electric knife and medical equipment

Abstract

The embodiment of the present invention provides a high-frequency electric knife and medical equipment, which relate to the field of medical devices. The high-frequency electric knife includes a knife body, an insulating sleeve and a fixing member, wherein the insulating sleeve is arranged at the distal end of the knife body, and the fixing member is connected to the insulating sleeve and the knife body at the same time, so that the insulating sleeve and the knife body are relatively fixed. The medical equipment includes the above-mentioned high-frequency electric knife. The high-frequency electric knife and medical equipment have the beneficial effect of making the insulating sleeve not easy to separate from the knife body, thereby improving the technical problem that the distal end of the knife body causes damage to human tissue.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a high-frequency electric knife and medical equipment. Background Art

[0002] Endoscopic submucosal dissection refers to an endoscopic minimally invasive technique that uses high-frequency instruments to perform submucosal dissection on lesions larger than 2 cm. High-frequency electric knives used for mucosal dissection are widely used as common tools for endoscopic treatment. High-frequency electric knives are divided into two types according to whether the distal end of the blade extending from the tube shell has an insulating head, namely, with an insulating head and without an insulating head. Among them, high-frequency electric knives with an insulating head at the distal end of the blade body are prone to the insulation head falling off during surgery. After the insulation head falls off, the distal end of the high-frequency electric knife will cause damage to the patient, posing a safety hazard. Summary of the invention

[0003] The object of the present invention is to provide a high-frequency electric knife and medical equipment, which can effectively improve the above-mentioned technical problems.

[0004] The embodiments of the present invention can be implemented as follows:

[0005] In a first aspect, an embodiment of the present invention provides a high-frequency electric knife, comprising a knife body, an insulating sleeve and a fixing part, wherein the insulating sleeve is mounted on the distal end of the knife body, and the fixing part is connected to the insulating sleeve and the knife body at the same time to fix the insulating sleeve relative to the knife body.

[0006] In an optional embodiment, a first connecting hole is provided at the distal end of the blade body, a second connecting hole is provided on the insulating sleeve, the second connecting hole is connected to the first connecting hole, and both the first connecting hole and the second connecting hole cooperate with the fixing member.

[0007] In an optional embodiment, the insulating sleeve comprises a first side wall and a second side wall which are arranged opposite to each other, a sleeve space for sleeve-mounting the distal end of the blade body is formed between the first side wall and the second side wall, and the sleeve space is communicated with the second connecting hole.

[0008] In an optional embodiment, the number of the second connecting holes is one or two;

[0009] Wherein, the two second connection holes are respectively arranged on the first side wall and the second side wall;

[0010] One of the two second connection holes cooperates with the fixing member, or the two second connection holes cooperate with the fixing member at the same time.

[0011] In an optional embodiment, the fixing member is a cylinder, a cone, a sphere or a prism.

[0012] In an optional embodiment, the first connecting hole and the second connecting hole are connected to form a matching chamber that matches with the fixing member.

[0013] In an optional embodiment, the matching chamber is a cylindrical chamber, a conical chamber or a prismatic chamber.

[0014] In an optional embodiment, a connecting layer is formed on the outer wall of the fixing member and / or the inner wall of the matching chamber.

[0015] In an optional embodiment, a notch is further provided at the distal end of the blade body, and the notch is communicated with the first connecting hole.

[0016] In an optional embodiment, the notch is arranged along the circumference of the blade body.

[0017] In an optional embodiment, the distal end of the blade body is further provided with a slot, the slot being in communication with the first connecting hole. In an optional embodiment, the slot and / or the notch penetrates the distal end of the blade body along the extending direction of the first connecting hole.

[0018] In an optional embodiment, the side-by-side direction of the slot, the first connecting hole, and the notch coincides with the extension direction of the axis of the blade body or is perpendicular to each other.

[0019] In an optional embodiment, at least one end of the first connecting hole is provided with a conical guide surface, and the guide surface is used to abut against the end of the fixing member when the fixing member extends into the first connecting hole, so as to guide the fixing member to extend into the first connecting hole.

[0020] In a second aspect, an embodiment of the present invention provides a medical device, comprising the high-frequency electric knife described in any one of the aforementioned embodiments.

[0021] The beneficial effects of the embodiments of the present invention include, for example:

[0022] The embodiment of the present invention provides a high-frequency electric knife, which includes a knife body, an insulating sleeve and a fixing member, wherein the insulating sleeve is arranged at the distal end of the knife body, and the fixing member is connected to the insulating sleeve and the knife body at the same time, so that the insulating sleeve and the knife body are relatively fixed. In this way, the insulating sleeve is not easy to separate from the knife body, which can effectively improve the problem of the distal end of the knife body causing damage to human tissue.

[0023] The embodiment of the present invention also provides a medical device, which includes the high-frequency electric knife mentioned above and has all the functions of the high-frequency electric knife. The medical device also has the beneficial effect of making the insulating sleeve not easy to separate from the knife body, and can improve the problem of the distal end of the knife body causing damage to human tissue. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 A schematic diagram of the structure of a first high-frequency electric knife provided by an embodiment of the present invention;

[0026] Figure 2 A schematic diagram of the structure of a knife body provided by an embodiment of the present invention;

[0027] Figure 3 A schematic diagram of the structure of an insulating sleeve provided in an embodiment of the present invention;

[0028] Figure 4 A schematic diagram of the structure of a second high-frequency electric knife provided by an embodiment of the present invention;

[0029] Figure 5 A schematic diagram of the structure of a third high-frequency electric knife provided by an embodiment of the present invention;

[0030] Figure 6 A schematic diagram of the structure of a fourth high-frequency electric knife provided by an embodiment of the present invention;

[0031] Figure 7 A schematic diagram of the structure of a fifth high-frequency electric knife provided by an embodiment of the present invention;

[0032] Figure 8 A schematic diagram of the structure of a sixth high-frequency electric knife provided by an embodiment of the present invention;

[0033] Fig. 9 A schematic diagram of the structure of a seventh high-frequency electric knife provided by an embodiment of the present invention;

[0034] Fig.10 A schematic structural diagram of an eighth high-frequency electric knife provided in an embodiment of the present invention.

[0035] Icons: 1-high frequency electric knife; 11-knife body; 111-first connecting hole; 112-slot; 113-notch; 114-guide surface; 12-insulating sleeve; 121-first side wall; 122-second side wall; 123-second connecting hole; 125-sleeve space; 13-fixing piece; 131-connecting section; 132-abutting section; 14-magnet. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings attached hereto can be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0039] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. 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 position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0040] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0041] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] Please refer to Figure 1-Figure 3The present embodiment provides a high-frequency electric knife 1, which includes a knife body 11, an insulating sleeve 12, and a fixing member 13. The insulating sleeve 12 is sleeved at the distal end of the knife body 11, and the fixing member 13 is connected to the insulating sleeve 12 and the knife body 11 at the same time. The fixing member 13 fixes the insulating sleeve 12 and the knife body 11. After the fixing member 13 is installed, the insulating sleeve 12 and the knife body 11 are relatively fixed, and the insulating sleeve 12 is not easy to be separated from the knife body 11, which can prevent the distal end of the knife body 11 from causing damage to human tissue.

[0043] Specifically, in this embodiment, the distal end of the blade body 11 is provided with a first connection hole 111, and the insulating sleeve 12 is provided with a second connection hole 123, the second connection hole 123 is communicated with the first connection hole 111, and both the first connection hole 111 and the second connection hole 123 are matched with the fixing member 13. That is, in this embodiment, the fixing member 13 passes through the first connection hole 111 and the second connection hole 123 at the same time. In this way, the fixing member 13 can prevent the insulating sleeve 12 from being separated from the distal end of the blade body 11.

[0044] Optionally, the matching mode between the fixing member 13 and the first connection hole 111 may be an interference fit, a transition fit, etc., and the matching mode between the fixing member 13 and the second connection hole 123 may be an interference fit, a transition fit, etc. In addition, the fixing member 13 and the first connection hole 111 may also be relatively fixed by bonding, and the fixing member 13 and the second connection hole 123 may also be relatively fixed by bonding.

[0045] Optionally, the aforementioned interference fit and bonding can be used in combination or separately. The aforementioned transition fit and bonding can be used in combination or separately.

[0046] Combination Figure 3 In this embodiment, the insulating sleeve 12 has a first side wall 121 and a second side wall 122 that are oppositely arranged. The first side wall 121 and the second side wall 122 are spaced apart from each other. A sleeve space 125 is formed between the first side wall 121 and the second side wall 122 , and the sleeve space 125 is connected to the second connecting hole 123 .

[0047] In the actual installation process, the insulating sleeve 12 is sleeved on the distal end of the blade body 11, the distal end of the blade body 11 is located in the sleeve space 125, and the first connection hole 111 is connected to the sleeve space 125. In this way, after the fixing member 13 passes through the second connection hole 123, it can further pass through the first connection hole 111 to fix the insulating sleeve 12 on the distal end of the blade body 11. The insulating sleeve 12 can effectively improve the problem of the distal end of the blade body 11 causing damage to human tissue.

[0048] Please refer to Figure 3In this embodiment, the number of the second connection holes 123 is two, and the two second connection holes 123 are respectively arranged on the first side wall 121 and the second side wall 122 .

[0049] It is understandable that in this embodiment, the two second connection holes 123 are both connected to the sleeve space 125, and the fixing member 13 is simultaneously matched with the first connection hole 111 and the two second connection holes 123. In this way, the fixing member 13 is not easy to be separated from the first connection hole 111, and the fixing effect of the fixing member 13 is more effective.

[0050] It should be noted that, optionally, the number of the second connection holes 123 can be one, two, three, etc.

[0051] It should be noted that, in some other embodiments, the fixing member 13 may only cooperate with the first connection hole 111 and one of the second connection holes 123 at the same time.

[0052] It should be noted that in this embodiment, after the distal end of the blade body 11 enters the sleeve space 125 , the two second connection holes 123 are respectively located at both ends of the first connection hole 111 , and the first side wall 121 and the second side wall 122 simultaneously limit the distal end of the blade body 11 .

[0053] It should be noted that, in this embodiment, the first side wall 121 and the second side wall 122 are both arc-shaped walls, the first side wall 121 and the second side wall 122 are integrally formed, and the first side wall 121 and the second side wall 122 enclose a columnar sleeve space 125, the shape of which is adapted to the shape of the distal end of the blade body 11.

[0054] It is understandable that in other embodiments, the first side wall 121 and the second side wall 122 may also be separated from each other and spaced apart.

[0055] Combination Figure 3 In this embodiment, the outer surface of the insulating sleeve 12 has a smooth transition and no edges or corners, which can effectively reduce damage to human tissue.

[0056] It should be noted that, in practical applications, the shape of the fixing member 13 can be a cylinder, a cone, a sphere or a prism structure. Correspondingly, the matching chamber after one of the second connection holes 123, the first connection hole 111 and the other second connection hole 123 are connected is adapted to the fixing member 13.

[0057] It should be noted that, optionally, the shape of the fixing member 13 and the shape of the matching chamber can be the same or different. For example, when the fixing member 13 is in the shape of a cylinder, the matching chamber can be a cylindrical chamber or a prismatic chamber, specifically, a triangular prism chamber, a quadrangular prism chamber, etc.

[0058] That is to say, the shape of the fixing member 13, the shape of the first connection hole 111, and the shape of the second connection hole 123 may be the same in pairs, or different from each other, or any two of them may be the same.

[0059] In this embodiment, when the shape of the fixing member 13 is a cylinder, the matching chamber after one of the second connection holes 123, the first connection hole 111, and the other second connection hole 123 are connected is a cylindrical chamber. When the shape of the fixing member 13 is a cone, the matching chamber after one of the second connection holes 123, the first connection hole 111, and the other second connection hole 123 are connected is a cone chamber. These two cases are taken as examples for specific description.

[0060] Combination Figure 1 In this embodiment, when the fixing member 13 is a cylinder, the first connection hole 111 and the two second connection holes 123 are all circular holes. In this way, the matching chamber after the first connection hole 111 and the two second connection holes 123 are connected can form a cylindrical chamber adapted to the fixing member 13.

[0061] It should be noted that if the fixing member 13 is a cylindrical structure, considering the problem that the fixing member 13 is easy to slip out of the matching chamber, in this embodiment, a connecting layer (not shown in the figure) is formed on the outer wall of the fixing member 13 and the inner wall of the matching chamber. In this way, the fixing member 13 can be fixed on the inner wall of the matching chamber.

[0062] It should be noted that, in actual use, adhesive is generally used as the connecting layer.

[0063] It should be noted that the aforementioned “inner wall of the matching chamber” can be understood as the inner wall of the first connection hole 111 and the inner walls of the two second connection holes 123 as a whole inner wall. It can also be understood as only the inner wall of the first connection hole 111. Or, only the inner wall of one of the second connection holes 123. Or, the inner wall of one of the second connection holes 123 and the inner wall of the first connection hole 111 as a whole inner wall. Or, the inner walls of the two second connection holes 123 as a whole inner wall.

[0064] It should be noted that, in other embodiments, the connection layer may be formed only on the outer wall of the fixing member 13. Alternatively, the connection layer may be formed only on the inner wall of the matching chamber.

[0065] Generally, in actual use, in order to facilitate the fixing member 13 to pass through the first connection hole 111 and the two second connection holes 123 , the axes of the first connection hole 111 and the two second connection holes 123 are arranged collinearly.

[0066] Generally, the fixing member 13 is a cylindrical pin structure, and both the fixing member 13 and the insulating sleeve 12 can be made of non-metallic, high-temperature resistant insulating materials such as ceramics and plastics.

[0067] Combination Figure 4 When the fixing member 13 is a cone structure, the first connecting hole 111 and the two second connecting holes 123 are both conical holes, and the first connecting hole 111 and the two second connecting holes 123 are connected to form a matching chamber that is adapted to the fixing member 13, which is a conical chamber.

[0068] During the installation of the fixing member 13, the small end of the fixing member 13 first enters one of the second connecting holes 123, and then passes through the first connecting hole 111 and the other second connecting hole 123 in sequence. The outer wall of the fixing member 13 and the inner wall of the matching chamber are squeezed against each other, so that the fixing member 13 can be fixed in the matching chamber.

[0069] Of course, when the fixing member 13 is a cone structure, a connection layer may also be formed on the outer wall of the fixing member 13 and / or the inner wall of the matching chamber.

[0070] Combination Figure 2 In this embodiment, a notch 113 is further provided at the distal end of the blade body 11, and the notch 113 is connected to the first connecting hole 111. In this way, when the fixing member 13 passes through the first connecting hole 111 and is squeezed by the inner wall of the first connecting hole 111, the notch 113 can accommodate the deformation of the fixing member 13 caused by being squeezed, which can effectively alleviate the squeezing force on the fixing member 13, avoid the fixing member 13 from breaking, and effectively extend the service life of the fixing member 13. It should be noted that, in this embodiment, a slot 112 is further provided at the distal end of the blade body 11, and the slot 112 is connected to the first connecting hole 111. The slot 112 has a similar function to the notch 113. The slot 112 can also accommodate the deformation of the fixing member 13 caused by being squeezed.

[0071] In addition, the notch 113 can also expand the size of the first connecting hole 111. Generally, the outer diameter of the fixing member 13 is larger than the inner diameter of the first connecting hole 111. Therefore, after the fixing member 13 is matched with the first connecting hole 111, the first connecting hole 111 will expand appropriately. At this time, the distal end of the blade body 11 is clamped on the fixing member 13 like a pair of pliers, which can effectively prevent the fixing member 13 from detaching from the first connecting hole 111. It should be noted that the slot 112 and the notch 113 can exist at the same time. Alternatively, only the slot 112 can be provided. Alternatively, only the notch 113 can be provided.

[0072] Specifically, in this embodiment, the slot 112 and / or the notch 113 penetrates the distal end of the blade body 11 along the extension direction of the first connecting hole 111. In this way, the slot 112 and the notch 113 can accommodate the deformation of different parts of the fixing member 13, and different parts of the fixing member 13 can be effectively protected.

[0073] It should be noted that, in this embodiment, the first connection hole 111 penetrates the distal end of the blade body 11 along the radial direction of the blade body 11. That is, the "extension direction of the first connection hole 111" herein can be understood as the radial direction of the blade body 11. In other embodiments, the first connection hole 111 can also be arranged to extend along the axial direction of the blade body 11.

[0074] It should be noted that, in actual use, the number of the card slots 112 may be one, two, three, four, etc. When there are multiple card slots 112 , the multiple card slots 112 may be arranged at intervals along the circumference of the first connecting hole 111 .

[0075] Similarly, in actual use, the number of the notches 113 can be one, two, three, four, etc. When the number of the notches 113 is multiple, the multiple notches 113 can be arranged at intervals along the circumference of the first connecting hole 111. In this embodiment, the notches 113 and the slots 112 are stamped and formed at the same time, and the width of the notches 113 is the same as the width of the slots 112, and the manufacturing process is simple and convenient. In this embodiment, the number of notches 113 and the slots 112 is not specifically limited. The relative position between the notches 113 and the slots 112 can also be changed according to actual conditions.

[0076] Combination Figure 2 The parallel direction of the slot 112, the first connecting hole 111 and the notch 113 coincides with the extending direction of the axis of the blade body 11. Figure 2 The direction indicated by the arrow B is the parallel direction of the slot 112 , the first connecting hole 111 and the notch 113 .

[0077] In this way, the coincidence of the parallel direction and the extension direction is not only conducive to processing the slot 112 and the notch 113 at the same time, but also when the fixing member 13 passes through the first connecting hole 111 and the two second connecting holes 123, the expansion amounts of the upper and lower sides of the distal end of the blade body 11 are the same.

[0078] It should be noted that, in other embodiments, the parallel direction of the slot 112, the first connection hole 111 and the notch 113 may be perpendicular to the axial extension direction of the blade body 11. The angle between the parallel direction of the slot 112, the first connection hole 111 and the notch 113 and the axial extension direction of the blade body 11 may also be an acute angle.

[0079] It is worth noting that if the parallel direction of the slot 112, the first connection hole 111 and the notch 113 is tilted downward relative to the axis of the blade body 11, the distal end of the blade body 11 will bend downward after the fixing member 13 passes through the first connection hole 111 and the two second connection holes 123. Similarly, if the parallel direction of the slot 112, the first connection hole 111 and the notch 113 is tilted upward relative to the axis of the blade body 11, the distal end of the blade body 11 will bend upward after the fixing member 13 passes through the first connection hole 111 and the two second connection holes 123.

[0080] It should be noted that the nouns "up" and "down" used in this embodiment to indicate directions are all based on the state of the high-frequency electric knife 1 when it is working normally. Figure 1 The state of the high-frequency electrosurgical unit 1 shown can be considered as the state when the high-frequency electrosurgical unit 1 works normally.

[0081] Combination Figure 2 In this embodiment, a conical guide surface 114 is provided at one end of the first connection hole 111. When the fixing member 13 is inserted into the first connection hole 111, the end of the fixing member 13 contacts the guide surface 114. The guide surface 114 can guide the fixing member 13 to extend into the first connection hole 111, thereby improving the installation efficiency of the fixing member 13.

[0082] It should be noted that in other embodiments, both ends of the first connecting hole 111 may also be provided with the aforementioned conical guide surfaces 114, so that when the fixing member 13 enters the first connecting hole 111 from different directions, it can be guided by the guide surface 114, which facilitates the installation of the fixing member 13.

[0083] Combination Figure 5 and Figure 6 It should be noted that, in other embodiments, the distal end of the blade body 11 may not be provided with the slot 112 or the notch 113 .

[0084] It should be noted that in Figure 1-Figure 6 In the embodiment, the first connection hole 111 is set to penetrate along the radial direction of the blade body 11, and the second connection hole 123 is set to penetrate along the radial direction of the insulating sleeve 12. Optionally, in other embodiments, the first connection hole 111 can also be set along other directions of the blade body 11, and the second connection hole 123 can also be set along other directions of the insulating sleeve 12.

[0085] For example, see Figure 7 Optionally, in other embodiments, the through direction of the first connection hole 111 is inclined relative to the radial direction of the blade body 11, and the inclination angle can be limited according to actual conditions. Generally, the inclination angle can be 30°, 45°, 60°, etc. Figure 7In the embodiment, corresponding to the through direction of the first connection hole 111, the through direction of the second connection hole 123 is also inclined relative to the radial direction of the insulating sleeve 12, and the inclination angle can also be 30°, 45°, 60°, etc.

[0086] Please refer to Figure 8 Optionally, in other embodiments, the through direction of the first connecting hole 111 is the same as the axial direction of the blade body 11 , and the through direction of the second connecting hole 123 is the same as the axial direction of the insulating sleeve 12 .

[0087] It should be noted that, in practical applications, the shape of the fixing member 13 can be designed into different shapes, for example, Figure 5 , Figure 7 , Figure 8 as well as Fig.10 In the embodiment, the fixing member 13 is a columnar structure. Figure 6 In the embodiment, the fixing member 13 is a cone structure. Fig. 9 In the embodiment, the fixing member 13 is a T-shaped structure.

[0088] exist Fig. 9 In the figure, the fixing member 13 includes a connecting section 131 and an abutting section 132. The abutting section 132 is connected to one end of the connecting section 131 to form the aforementioned T-shaped structure. The connecting section 131 cooperates with the first connecting hole 111 and the second connecting hole 123 at the same time. The abutting section 132 abuts on the distal end of the insulating sleeve 12. The abutting section 132 is located outside the insulating sleeve 12, which makes it convenient to install or remove the connecting section 131.

[0089] It should be noted that, in this embodiment, the connection layer on the inner wall of the matching chamber formed by connecting the first connection hole 111 and the two second connection holes 123 is made of adhesive, and the connection layer on the outer wall of the fixing member 13 is made of adhesive. Optionally, in other embodiments, the connection layer may also be a threaded structure, for example, Figure 8 and Fig. 9 As shown, an external thread is provided on the outer wall of the fixing member 13, and an internal thread is provided on the inner wall of the matching chamber, and the external thread is threadably matched with the internal thread.

[0090] Optionally, in other embodiments, the connection layer may also be a magnetic adsorption layer. Fig.10 As shown, a magnet 14 is disposed inside the fixing member 13, and a magnetic adsorption layer is disposed on the inner wall of the matching chamber. After the fixing member 13 is matched with the matching chamber, the magnet 14 and the magnetic adsorption layer are magnetically matched, which can prevent the fixing member 13 from being separated from the matching chamber. Of course, in other embodiments, the entire fixing member 13 can be a magnet 14.

[0091] This embodiment also provides a medical device, which includes the aforementioned high-frequency electric knife 1. Generally, in actual use, the medical device may also include an endoscope, and the high-frequency electric knife 1 is inserted into the forceps channel of the endoscope. With the assistance of the endoscope, the staff uses the high-frequency electric knife 1 to perform surgery on the patient.

[0092] In some embodiments:

[0093] Please refer to Figure 1-Figure 3 The high-frequency electric knife 1 comprises a knife body 11, an insulating sleeve 12 and a fixing member 13. The insulating sleeve 12 has a first side wall 121 and a second side wall 122. The insulating sleeve 12 is provided with a second connection hole 123. The number of the second connection holes 123 is two. The two second connection holes 123 are respectively provided on the first side wall 121 and the second side wall 122. The first side wall 121 and the second side wall 122 enclose a sleeve space 125. The two second connection holes 123 are connected to the sleeve space 125 at the same time. The distal end of the knife body 11 is provided with a first connection hole 111. The insulating sleeve 12 is sleeved on the distal end of the knife body 11 through the sleeve space 125. The two second connection holes 123 are respectively located at the two ends of the first connection hole 111. The two second connection holes 123 are both connected to the first connection hole 111. The distal end of the knife body 11 is also provided with a card slot 112 and a notch 113. The card slot 112 and the notch 113 are both connected to the first connection hole 111. After the fixing member 13 passes through the first connection hole 111 and the two second connection holes 123, the insulating sleeve 12 and the blade body 11 remain relatively fixed. The deformation of the fixing member 13 caused by being squeezed is located in the slot 112 and the notch 113. Figure 1 In the figure, the fixing part 13 is a cylindrical pin, the first connecting hole 111 and the two second connecting holes 123 are all circular holes, the first connecting hole 111 and the two second connecting holes 123 are connected to form a cylindrical matching chamber adapted to the fixing part 13, the inner wall of the first connecting hole 111 and the inner wall of the two second connecting holes 123 are coated with a connecting layer, and the outer wall of the fixing part 13 is also coated with a connecting layer.

[0094] Please refer to Figure 4 , Figure 4The high-frequency electric knife 1 shown includes a knife body 11, an insulating sleeve 12 and a fixing member 13. The insulating sleeve 12 has a first side wall 121 and a second side wall 122. The insulating sleeve 12 is provided with a second connection hole 123. The number of the second connection holes 123 is two. The two second connection holes 123 are respectively provided on the first side wall 121 and the second side wall 122. The first side wall 121 and the second side wall 122 enclose a sleeve space 125. The two second connection holes 123 are connected to the sleeve space 125 at the same time. The first connection hole 111 is provided at the distal end of the knife body 11. The insulating sleeve 12 is sleeved on the distal end of the knife body 11 through the sleeve space 125. The two second connection holes 123 are respectively located at the two ends of the first connection hole 111. The two second connection holes 123 are both connected to the first connection hole 111. The distal end of the knife body 11 is also provided with a slot 112 and a notch 113. The slot 112 and the notch 113 are both connected to the first connection hole 111. After the fixing member 13 passes through the first connection hole 111 and the two second connection holes 123, the insulating sleeve 12 and the blade body 11 remain relatively fixed. The deformation of the fixing member 13 caused by being squeezed is located in the slot 112 and the notch 113. Figure 4 In the figure, the fixing part 13 is a tapered pin, the first connecting hole 111 and the two second connecting holes 123 are all tapered holes, the first connecting hole 111 and the two second connecting holes 123 are connected to form a conical matching chamber adapted to the fixing part 13, and the outer wall of the fixing part 13 and the inner wall of the conical chamber are squeezed against each other, which plays a better fixing and positioning role for the fixing part 13.

[0095] Please refer to Figure 5 , Figure 5 The high-frequency electric knife 1 shown includes a knife body 11, an insulating sleeve 12 and a fixing member 13. The insulating sleeve 12 has a first side wall 121 and a second side wall 122. The insulating sleeve 12 is provided with a second connection hole 123. The number of the second connection holes 123 is two. The two second connection holes 123 are respectively provided on the first side wall 121 and the second side wall 122. The first side wall 121 and the second side wall 122 enclose a sleeve space 125. The two second connection holes 123 are communicated with the sleeve space 125 at the same time. A first connection hole 111 is provided on the distal end of the knife body 11. The insulating sleeve 12 is sleeved on the distal end of the knife body 11 through the sleeve space 125. The two second connection holes 123 are respectively located at both ends of the first connection hole 111. The two second connection holes 123 are communicated with the first connection hole 111. After the fixing member 13 passes through the first connection hole 111 and the two second connection holes 123, the insulating sleeve 12 and the knife body 11 remain relatively fixed. Figure 5In the figure, the fixing part 13 is a cylindrical pin, the first connecting hole 111 and the two second connecting holes 123 are all circular holes, the first connecting hole 111 and the two second connecting holes 123 are connected to form a cylindrical matching chamber adapted to the fixing part 13, the inner wall of the first connecting hole 111 and the inner wall of the two second connecting holes 123 are coated with a connecting layer, and the outer wall of the fixing part 13 is also coated with a connecting layer.

[0096] Please refer to Figure 6 , Figure 6 The high-frequency electric knife 1 shown includes a knife body 11, an insulating sleeve 12 and a fixing member 13. The insulating sleeve 12 has a first side wall 121 and a second side wall 122. The insulating sleeve 12 is provided with a second connection hole 123. The number of the second connection holes 123 is two. The two second connection holes 123 are respectively provided on the first side wall 121 and the second side wall 122. The first side wall 121 and the second side wall 122 enclose a sleeve space 125. The two second connection holes 123 are communicated with the sleeve space 125 at the same time. A first connection hole 111 is provided on the distal end of the knife body 11. The insulating sleeve 12 is sleeved on the distal end of the knife body 11 through the sleeve space 125. The two second connection holes 123 are respectively located at both ends of the first connection hole 111. The two second connection holes 123 are communicated with the first connection hole 111. After the fixing member 13 passes through the first connection hole 111 and the two second connection holes 123, the insulating sleeve 12 and the knife body 11 remain relatively fixed. Figure 6 In the figure, the fixing part 13 is a tapered pin, the first connecting hole 111 and the two second connecting holes 123 are all tapered holes, the first connecting hole 111 and the two second connecting holes 123 are connected to form a conical matching chamber adapted to the fixing part 13, and the outer wall of the fixing part 13 and the inner wall of the conical chamber are squeezed against each other, which plays a better fixing and positioning role for the fixing part 13.

[0097] The above description is only a specific embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high-frequency electric knife, characterized in that: The knife comprises a blade body (11), an insulating sleeve (12), and a fixing member (13), wherein the insulating sleeve (12) is sleeved on the distal end of the blade body (11), and the fixing member (13) is connected to both the insulating sleeve (12) and the blade body (11), so that the insulating sleeve (12) and the blade body (11) are relatively fixed; A first connection hole (111) is provided at the distal end of the blade body (11), a second connection hole (123) is provided on the insulating sleeve (12), the second connection hole (123) is communicated with the first connection hole (111), and both the first connection hole (111) and the second connection hole (123) cooperate with the fixing member (13); A notch (113) is further provided at the distal end of the blade body (11), and the notch (113) is communicated with the first connecting hole (111); The notch (113) is arranged along the circumference of the blade body (11); The distal end of the blade body (11) is further provided with a slot (112), wherein the slot (112) is in communication with the first connecting hole (111); The slot (112) and / or the notch (113) penetrates the distal end of the blade body (11) along the extension direction of the first connecting hole (111), and the first connecting hole (111) is arranged along the circumference of the blade body (11); The side-by-side direction of the clamping slot (112), the first connecting hole (111) and the notch (113) coincides with the extension direction of the axis of the blade body (11), or the angle between the side-by-side direction of the clamping slot (112), the first connecting hole (111) and the notch (113) and the extension direction of the axis of the blade body (11) is an acute angle; The notch (113) can accommodate the deformation of the fixing member (13) caused by being squeezed, thereby alleviating the squeezing force on the fixing member (13) and preventing the fixing member (13) from breaking; the distal end of the blade body (11) is clamped on the fixing member (13), thereby preventing the fixing member (13) from being separated from the first connecting hole (111).

2. The high-frequency electric knife according to claim 1, characterized in that: The insulating sleeve (12) comprises a first side wall (121) and a second side wall (122) which are arranged opposite to each other, a sleeve space (125) for sleeve-mounting the distal end of the blade body (11) is formed between the first side wall (121) and the second side wall (122), and the sleeve space (125) is communicated with the second connection hole (123).

3. The high-frequency electric knife according to claim 2, characterized in that: The number of the second connecting holes (123) is one or two; Wherein, the two second connection holes (123) are respectively arranged on the first side wall (121) and the second side wall (122); One of the two second connection holes (123) cooperates with the fixing member (13), or the two second connection holes (123) cooperate with the fixing member (13) at the same time.

4. The high-frequency electric knife according to any one of claims 1 to 3, characterized in that: The fixing member (13) is a cylinder, a cone, a sphere or a prism.

5. The high-frequency electric knife according to claim 4, characterized in that: The first connection hole (111) and the second connection hole (123) are in communication with each other, and form a matching chamber that matches with the fixing member (13).

6. The high-frequency electric knife according to claim 5, characterized in that: The matching chamber is a cylindrical chamber, a pyramidal chamber or a prismatic chamber.

7. The high-frequency electric knife according to claim 5, characterized in that: A connecting layer is formed on the outer wall of the fixing member (13) and / or the inner wall of the matching chamber.

8. The high-frequency electric knife according to any one of claims 1 to 3, characterized in that: At least one end of the first connection hole (111) is provided with a conical guide surface (114), and the guide surface (114) is used to abut against an end of the fixing member (13) when the fixing member (13) is extending into the first connection hole (111), so as to guide the fixing member (13) to extend into the first connection hole (111).

9. A medical device, characterized in that: A high-frequency electric knife (1) comprising the one described in any one of claims 1 to 8.

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