A surgical knife with replaceable electrode blade

Abstract

The present invention relates to a scalpel with a replaceable electrode blade, belonging to the field of plasma scalpels. The scalpel comprises an outer tube, an outer tube positioning groove is provided at the distal end of the outer tube, a plurality of anti-slip grooves are provided on the side of the outer tube positioning groove, and an inner electrode rod is provided inside the outer tube; the electrode head assembly comprises a ceramic head, a connector is provided at one end of the ceramic head close to the outer tube, an outer tube mounting boss and an anti-slip boss are provided on the connector that match the outer tube positioning groove and the anti-slip groove, a working electrode is installed on the ceramic head, and the working electrode is connected to the inner electrode rod through an electrode sheet connecting rod, and by adopting a replaceable electrode blade design, doctors can quickly replace blades of different angles to meet different needs during surgery, reducing the waste of handles and electrode rods, and further reducing surgical costs.

Description

Technical Field

[0001] The invention belongs to the field of plasma scalpels, and in particular relates to a scalpel with a replaceable electrode blade head. Background Art

[0002] In the development of modern medicine, many new surgical tools have emerged. Plasma scalpels are commonly used in current surgical operations because of their simple operation method.

[0003] A plasma scalpel usually includes an electrode head and an electrode rod. The electrode head is usually fixed at the far end of the electrode rod. In actual use, electrode heads at different angles are required to cope with various situations. One operation often requires multiple plasma scalpels.

[0004] In the process of realizing the present invention, the inventors found that there are at least the following problems in the prior art: the fixed installation method of the electrode cutter head and the electrode rod requires that the entire cutter head be replaced at the same time when electrode cutters with different angles are needed, which results in a waste of the usage rate of parts such as the handle and the electrode rod; it also increases the cost of the operation.

[0005] Therefore, in view of the problems in the prior art, a surgical knife with a replaceable electrode blade head is proposed. Summary of the invention

[0006] The purpose of this embodiment is to provide a surgical knife with a replaceable electrode blade head, so as to avoid the problem of using multiple handles, electrode rods and other parts in one operation, which would increase the cost of the operation.

[0007] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0008] A surgical knife with a replaceable electrode blade, comprising:

[0009] The outer tube has an outer tube positioning groove at the far end, a plurality of anti-slip grooves are arranged on the side of the outer tube positioning groove, and an inner electrode rod is arranged inside the outer tube;

[0010] The electrode head assembly includes a ceramic head. A connecting head is provided at one end of the ceramic head close to the outer tube. The connecting head is provided with an outer tube mounting boss and an anti-slip boss that match the outer tube positioning groove and the anti-slip groove. A working electrode is installed on the ceramic head. The working electrode is connected to the inner electrode rod through an electrode sheet connecting rod.

[0011] Beneficial effects:

[0012] 1. By adopting a replaceable electrode blade design, doctors can quickly replace blades with different angles to meet different needs during surgery, reducing the waste of handles and electrode rods and further reducing surgical costs;

[0013] 2. The diversity and adjustability of the electrode blade make the surgery more precise, adaptable to various complex situations, and improve the success rate of the surgery;

[0014] 3. The anti-slip groove and the outer tube mounting boss ensure the stability of the electrode blade and reduce the risk during surgery.

[0015] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0017] Figure 1 This is an overall structural diagram of Embodiment 1 of the present disclosure;

[0018] Figure 2 This is an overall structural diagram of Embodiment 2 of the present disclosure;

[0019] Figure 3 This is a structural diagram of the outer tube of an embodiment of the present disclosure;

[0020] Figure 4 It is a structural diagram of the electrode head assembly of the embodiment of the present disclosure;

[0021] Figure 5 This is a diagram of the internal structure of the electrode head assembly according to an embodiment of the present disclosure;

[0022] Figure 6 This is a structural diagram of the electrode sheet connecting rod according to an embodiment of the present disclosure;

[0023] Figure 7 It is a structural diagram of the bent hook electrode head assembly of the embodiment of the present disclosure. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0025] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0026] Embodiment 1, a surgical knife with a replaceable electrode tip, comprising an outer tube 2 and an electrode tip assembly 4;

[0027] The outer tube 2 has an outer tube positioning groove 22 at its distal end, and a plurality of anti-slip grooves 23 are provided on the side of the outer tube positioning groove 22. The anti-slip groove 23 may be semicircular in shape, and an inner electrode rod 3 is provided inside the anti-slip groove 23.

[0028] The electrode head assembly 4 includes a ceramic head 41, and a connector 43 is provided at one end of the ceramic head 41 close to the outer tube 2. The connector 43 and the ceramic head 41 can be connected by glue. The connector 43 is provided with an outer tube mounting boss 431 and an anti-slip boss 432 that match the outer tube positioning groove 22 and the anti-slip groove 23. The ceramic head 41 is installed with an electrode sheet 44, and the electrode sheet 44 is connected to the inner electrode rod 3 through an electrode sheet connecting rod 45.

[0029] When in use, the electrode head assembly 4 is inserted and installed on the end face of the outer tube 2, and fixed by the outer tube positioning groove 22 and the anti-slip groove 23 and the outer tube installation boss 431 and the anti-slip boss 432. The electrode sheet connecting rod 45 and the inner electrode rod 3 are in contact and conductive with each other. At this time, the electrode sheet 44 serves as the emitter of the scalpel, and the outer tube 2 serves as the return pole of the blade head, thus completing the operation. From the above description, it can be known that such a design can replace the electrode blade head separately, avoiding the use of multiple handles and electrode rods and other parts in one operation, which increases the cost of the operation.

[0030] The outer tube 2 and the inner electrode rod 3 are fixedly mounted at their proximal ends on the handle 1. The outer tube 2 and the inner electrode rod 3 can be made of metal, specifically stainless steel, and the connector 43 can be processed by injection molding.

[0031] In some embodiments, the installation angle of the electrode sheet 44 on the ceramic head 41 can be adjusted autonomously as needed.

[0032] Furthermore, the ceramic head 41 is made of ceramic material, and the connecting head 43 is made of plastic. The ceramic head 41 and the connecting head 43 can be fixedly connected by integral injection molding.

[0033] Furthermore, the electrode sheet 44 is provided with a plurality of excitation protrusions 441, so that the tip thereof can be used to better form a plasma layer. The ceramic head 41 is provided with an electrode sheet mounting groove 411, and the electrode sheet 44 is installed in the electrode sheet mounting groove 411 and fixed by glue dispensing. Both sides of the electrode sheet 44 are provided with mounting positioning bosses 443, and the mounting positioning bosses 443 are positioned by cooperating with the positioning grooves on both sides of the electrode sheet mounting groove 411.

[0034] In some embodiments, the scalpel is provided with a suction tube, which can be performed in the following manner; the inner electrode rod 3 and the electrode sheet connecting rod 45 are tubular, an electrode sheet through hole 442 is provided on the electrode sheet 44, the electrode sheet connecting rod 45 is installed on the inner side of the electrode sheet 44, and the cavity therein is communicated with the electrode sheet 44, the electrode sheet connecting rod 45 is inserted into the inner electrode rod 3, and when the electrode head assembly 4 is installed, the electrode head assembly 4 is inserted into the inner electrode rod 3 to complete, so that the waste liquid can enter the electrode sheet connecting rod 45 through the electrode sheet through hole 442, and then enter the inner electrode rod 3 to be discharged outward.

[0035] Furthermore, in order to ensure the stability of the installation of the electrode head assembly 4, the distal end of the inner electrode rod 3 protrudes from the end surface of the outer tube 2, and a connecting rod fixing groove 31 is opened at the distal end of the inner electrode rod 3. The connecting rod fixing groove 31 is half-waist-shaped, and connecting rod fixing protrusions 32 are provided on both sides of the connecting rod fixing groove 31;

[0036] The electrode sheet connecting rod 45 is L-shaped, including a vertical section 451 and a horizontal section 452. The front end of the vertical section 451 is connected to the electrode sheet 44. When installed, the vertical section 451 is clamped in the connecting rod fixing groove 31. After installation, the connecting rod fixing protrusion 32 limits and fixes the vertical section 451.

[0037] In some embodiments, in order to make the electrode head assembly 4 and the outer tube 2 installed more firmly, the distal end of the outer tube 2 is provided with a plurality of circumferentially distributed outer tube positioning grooves 22. Preferably, the distal end of the outer tube 2 is provided with two circumferentially distributed outer tube positioning grooves 22.

[0038] In some embodiments, in order to ensure stable contact and conduction between the inner electrode rod 3 and the electrode sheet connecting rod 45 after installation, a plurality of elastic sheets 453 are provided at one end of the electrode sheet connecting rod 45 close to the inner electrode rod 3, and an arc contact protrusion 454 is provided on the elastic sheet 453. The conduction effect is ensured by the contact between the arc contact protrusion 454 and the inner wall of the inner electrode rod 3.

[0039] In some embodiments, the connector 43 is provided with a plurality of sealing ring installation grooves 433, and sealing rings 434 are installed in the sealing ring installation grooves 433. When the electrode head assembly 4 is installed on the outer tube 2, the inner electrode rod 3 is located in the connector 43, and the sealing ring 434 contacts the outer wall of the connector 43 to complete the sealing.

[0040] In order to facilitate the installation and fixation of the electrode head assembly 4, a magnetic ring 42 can be further provided between the ceramic head 41 and the connecting head 43. The magnetic ring 42 can be fixed to the ceramic head 41 and the connecting head 43 respectively by glue. The end of the magnetic ring 42 close to the ceramic head 41 is provided with a ceramic head mounting groove 421 for installing the ceramic head 41, and the end of the magnetic ring 42 close to the connecting head 43 is provided with a limiting plane 422. The installation is completed by the interference between the limiting plane 422 and the end face of the outer tube 2. At the same time, the limiting plane 422 and the end face of the outer tube 2 are magnetically attracted to each other, and the inner wall of the limiting plane 422 and the outer wall of the inner electrode rod 3 are magnetically attracted to each other to complete the fixation. In some cases, the material of the outer tube 2 and the inner electrode rod 3 is stainless steel. At this time, a magnetic ring that can be magnetically attracted is provided at the far end of the inner electrode rod 3 and the outer tube 2, and the magnetic ring can be connected and fixed by glue or welding.

[0041] An outer tube sheath 21 is provided on the outer side of the outer tube 2, and an insulating sheath is provided on the inner electrode rod 3. The material of the outer tube sheath 21 is an insulating heat shrink tube.

[0042] Embodiment 2, a surgical knife with a replaceable electrode tip, comprising an outer tube 2 and a hook electrode tip assembly 5;

[0043] The outer tube 2 has an outer tube positioning groove 22 at its distal end, and a plurality of anti-slip grooves 23 are provided on the side of the outer tube positioning groove 22. The anti-slip groove 23 may be semicircular in shape, and an inner electrode rod 3 is provided inside the anti-slip groove 23. The inner electrode rod 3 is tubular.

[0044] The hook electrode head assembly 5 includes a hook electrode 51 and a mounting connection portion, the mounting connection portion has the same structure as the connection head 43, and the mounting connection portion and the hook electrode 51 can be connected by glue;

[0045] The hook electrode ceramic head 53 is provided with a hook electrode mounting sleeve 54, which is fixedly installed at the distal end of the through hole in the hook electrode ceramic head 53. A hook electrode connecting column 52 is installed on the hook electrode mounting sleeve 54, and a hook electrode 51 is provided at the distal end of the hook electrode connecting column 52. When the hook electrode head assembly 5 is installed, the hook electrode connecting column 52 is inserted and installed in the inner electrode rod 3.

[0046] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0047] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A surgical knife with a replaceable electrode blade, characterized in that: The scalpel comprises: The outer tube has an outer tube positioning groove at the far end, a plurality of anti-slip grooves are arranged on the side of the outer tube positioning groove, and an inner electrode rod is arranged inside the outer tube; The electrode head assembly includes a ceramic head. A connecting head is provided at one end of the ceramic head close to the outer tube. The connecting head is provided with an outer tube mounting boss and an anti-slip boss that match the outer tube positioning groove and the anti-slip groove. A working electrode is installed on the ceramic head. The working electrode is connected to the inner electrode rod through an electrode sheet connecting rod.

2. A surgical knife with a replaceable electrode tip according to claim 1, characterized in that: The working electrode is an electrode sheet, and a plurality of exciting protrusions are arranged on the electrode sheet.

3. A surgical knife with a replaceable electrode blade according to claim 1, characterized in that: The distal end of the outer tube is provided with two circumferentially distributed outer tube positioning grooves.

4. A surgical knife with a replaceable electrode tip according to claim 1, characterized in that: The inner electrode rod and the electrode sheet connecting rod are tubular, an electrode sheet through hole is opened on the working electrode, the electrode sheet connecting rod is installed on the inner side of the working electrode, the cavity inside the electrode sheet is connected with the working electrode, and the electrode sheet connecting rod is inserted into the inner electrode rod.

5. A surgical knife with a replaceable electrode tip according to claim 4, characterized in that: The distal end of the inner electrode rod protrudes from the end surface of the outer tube, and a connecting rod fixing groove is provided at the distal end of the inner electrode rod, and the connecting rod fixing groove is in a half waist shape; The electrode sheet connecting rod is L-shaped, including a vertical section and a horizontal section. The front end of the vertical section is connected to the working electrode, and the vertical section is clamped in the connecting rod fixing groove.

6. A surgical knife with a replaceable electrode tip according to claim 5, characterized in that: Described, connecting rod fixing protrusions are arranged on both sides of the connecting rod fixing groove.

7. A surgical knife with a replaceable electrode tip according to claim 5, characterized in that: A plurality of elastic sheets are arranged at one end of the electrode sheet connecting rod close to the inner electrode rod, and arc-line abutment protrusions are arranged on the elastic sheets.

8. A surgical knife with a replaceable electrode tip according to claim 1, characterized in that: A plurality of sealing ring installation grooves are arranged inside the connector, and sealing rings are installed in the sealing ring installation grooves.

9. A surgical knife with a replaceable electrode blade according to claim 1, characterized in that: A magnetic ring is arranged between the ceramic head and the connecting head.

10. A surgical knife with a replaceable electrode tip according to claim 9, characterized in that: A limiting plane is provided at one end of the magnetic attraction ring close to the connector.

11. A surgical knife with a replaceable electrode tip according to claim 1, characterized in that: The working electrode is a hook electrode.

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