CN110507407B - Plasma surgical knife head and plasma surgical device - Google Patents
Plasma surgical knife head and plasma surgical device Download PDFInfo
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- CN110507407B CN110507407B CN201910837327.7A CN201910837327A CN110507407B CN 110507407 B CN110507407 B CN 110507407B CN 201910837327 A CN201910837327 A CN 201910837327A CN 110507407 B CN110507407 B CN 110507407B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/042—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating using additional gas becoming plasma
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00053—Mechanical features of the instrument of device
- A61B2018/00059—Material properties
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00577—Ablation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00601—Cutting
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Abstract
A plasma surgical tool bit and a plasma surgical device. The plasma surgical tool bit comprises an excitation electrode, a loop electrode and a cable assembly connected with the excitation electrode and the loop electrode. The loop electrode is tubular, the surface of the loop electrode is hollowed, an insulating layer is arranged on the surface of the loop electrode, and the section of the hollowed part of the loop electrode is not covered by the insulating layer; the excitation electrode is columnar, the surface of the excitation electrode is provided with an insulating layer and at least two bulges, the bulges are not provided with the insulating layer, the excitation electrode is inserted into the loop electrode, and the bulges are exposed out of the hollow-out part of the loop electrode. Or, the loop electrode is columnar and is provided with an insulating layer, and N openings are formed in the insulating layer to expose the loop electrode; the excitation electrode is tubular, the surface of the excitation electrode is provided with N openings, and the size of each opening is larger than that of an opening on the insulating layer of the return circuit electrode; the return electrode is inserted into the excitation electrode, and each opening in the return electrode insulating layer is located in each opening in the excitation electrode. The plasma layer area that above-mentioned tool bit during operation formed is great, has improved the work efficiency of tool bit.
Description
Technical Field
The application relates to the field of medical equipment, in particular to a plasma surgical knife head and a plasma surgical device.
Background
The low-temperature plasma radio frequency ablation is a new technology developed on the basis of electrochemistry in recent years, and the radio frequency generated plasma is used for breaking the molecular bonds of tissues and gasifying the tissues at a relatively low temperature of 40-70 ℃, so that the functions of cutting, ablating, stopping bleeding and the like of the tissues are realized, and the low-temperature plasma radio frequency ablation is increasingly applied to clinic. The energy generated by the bipolar radio frequency converts electrolyte between the radio frequency cutter head and the tissue into a plasma thin layer, charged particles in the plasma are accelerated by an electric field and then transfer the energy to the tissue, and molecular bonds forming cell components in the target tissue are dissociated and decomposed into small molecule gas. The technology can be applied to clinical operations of pain departments, neurology and the like.
However, the current plasma scalpel has low working efficiency, which may result in long operation time and increased difficulty of operation.
Disclosure of Invention
The embodiment of the application provides a plasma surgical knife head and a plasma surgical device, which are used for increasing the area of a plasma layer formed when the knife head works and improving the working efficiency of the knife head, thereby helping to reduce the operation time and improve the operation efficiency.
In a first aspect, an embodiment of the present application provides a plasma surgical tool bit, including: the electrode rod comprises an excitation electrode and a return circuit electrode; the loop electrode is tubular, at least one hollow part is arranged on the surface of the tubular loop electrode, an insulating layer is arranged on the surface of the loop electrode, and the insulating layer does not cover the cross section of the hollow part of the loop electrode; the excitation electrode is columnar, an insulating layer and at least two bulges are arranged on the surface of the excitation electrode, the at least two bulges are not covered by the insulating layer, the excitation electrode is inserted into the tubular loop electrode, and the at least two bulges are exposed out of the hollow part of the loop electrode.
In a second aspect, embodiments of the present application provide a plasma surgical blade, comprising: the electrode rod comprises an excitation electrode and a return circuit electrode; the loop electrode is columnar, an insulating layer is arranged on the loop electrode, N openings are formed in the insulating layer to expose the loop electrode, and N is an integer greater than or equal to 2; the excitation electrode is tubular, the surface of the tubular excitation electrode is provided with N openings, and the size of the opening on the surface of the excitation electrode is larger than that of the opening on the insulating layer of the loop electrode; the return electrode is inserted into the excitation electrode, and each opening on the return electrode insulating layer is positioned in each opening on the excitation electrode.
In a third aspect, embodiments of the present application provide a plasma surgical blade, comprising: the electrode rod comprises an excitation electrode, a loop electrode and a base; the base is cylindrical, and one end of the base is provided with a groove parallel to the ceramic base and used for embedding the excitation electrode; the base part of the excitation electrode is strip-shaped, one end of the base part is provided with a strip-shaped protruding part, the base part is embedded into the groove of the base, and the protruding part is exposed out of the base; the loop electrode is arc-shaped and is wrapped on the base, and the loop electrode is not in contact with the protruding part of the excitation electrode.
In a fourth aspect, embodiments of the present application provide a plasma surgical device, including: the plasma scalpel head comprises a main machine and the plasma scalpel head of any one of the first aspect, the second aspect or the third aspect, wherein an electric cable assembly in the plasma scalpel head is connected with the main machine, and the main machine is used for supplying power to the plasma scalpel head through the electric cable assembly.
The plasma surgical knife head or the plasma surgical device provided by the embodiment can increase the area of the formed plasma layer, improve the working efficiency of the surgical knife head, thereby being beneficial to reducing the surgical time and improving the surgical efficiency without increasing the diameter of the electrode rod of the surgical knife head.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a plasma surgical tool tip according to an embodiment of the present disclosure;
FIG. 2 is a second schematic view of a plasma surgical tool tip according to an embodiment of the present disclosure;
FIG. 3 is a third schematic view of a plasma surgical tool tip according to an embodiment of the present disclosure;
FIG. 4 is a schematic view of another alternative plasma surgical blade according to an embodiment of the present disclosure;
FIG. 5 is a second schematic view of another alternative plasma surgical blade according to an embodiment of the present application;
FIG. 6 is a schematic view of another alternative plasma surgical blade according to an embodiment of the present application;
FIG. 7 is a second schematic view of another alternative plasma surgical blade according to an embodiment of the present disclosure;
FIG. 8 is a schematic diagram of an excitation electrode of another plasma surgical tool tip according to an embodiment of the present application;
FIG. 9 is a schematic view of a base structure of another plasma surgical tool tip provided in accordance with an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail below. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without making any creative effort, shall fall within the protection scope of the present application.
The low temperature plasma radiofrequency ablation can be applied to pain departments, neurology and other treatments, for example, can be used for treating postherpetic neuralgia (PHN), postthoracotomy neuralgia (chronic neuralgia caused by nerve root injury), stump neuralgia, phantom limb pain and the like. In the case of PHN, PHN is a more common neuropathic pain that can manifest as persistent pain or can recur after a period of remission. The PHN is treated by adopting the low-temperature plasma radiofrequency ablation, has better analgesic effect, can avoid the problem of postoperative numbness, and is a more common treatment means.
Most of the existing plasma scalpels are single-point type, the area of a plasma layer formed during working is small, namely, the ablation area of tissues is small, and the working efficiency is low. Especially, when PHN is treated, the target tissue area is usually large, and the operation can be completed in a long time, so that the operation efficiency is not high, and the operation difficulty of the medical staff is increased.
In order to solve the above problem, the embodiment of the present application provides a plasma surgical knife head for increasing the area of a plasma layer formed when the knife head works, and improving the working efficiency of the knife head, thereby helping to reduce the operation time and improve the operation efficiency.
Referring to fig. 1 to 3, a plasma surgical tool bit according to an embodiment of the present disclosure is shown. Fig. 1 is a schematic view schematically showing the overall structure of a plasma surgical head, fig. 2 is a schematic view schematically showing the structure of an electrode rod portion of a plasma surgical head, and fig. 3 is a schematic sectional view of the electrode rod portion of the plasma surgical head.
As shown in fig. 1 to 3, a plasma tool bit provided by an embodiment of the present application includes: an electrode rod 11 and a cable wire assembly 12 connected to the electrode rod, wherein the electrode rod 11 comprises an excitation electrode 111 and a return electrode 112.
The excitation electrode 111 is in a columnar shape, the surface of the excitation electrode is provided with an insulating layer and at least two bulges, and the insulating layer only covers the columnar surface and does not cover the bulges, so that a plasma layer can be formed between the bulges of the excitation electrode 111 and the return circuit electrode 111 after the excitation electrode is electrified.
The loop electrode 112 is tubular, and at least one part of the surface of the loop electrode 112 is hollow. In fig. 1 to 3, a hollow is taken as an example, when the excitation electrode 111 is inserted into the tubular loop electrode 12, each protrusion of the excitation electrode 111 is disposed at the hollow part of the loop electrode 112; alternatively, the loop electrode 112 may have a plurality of hollow portions, and when the excitation electrode 111 is inserted into the tubular loop electrode 112, each protrusion of the excitation electrode 111 is located in each hollow portion of the loop electrode 112. The surface of the return electrode 112 is provided with an insulating layer, but the insulating layer does not cover the cross section of the hollow part of the return electrode 112, so that a plasma layer can be formed between the return electrode 111 and the excitation electrode 112 exposed after electrification.
Illustratively, the excitation electrode 111 may be a cylinder with a diameter of 0.5 mm; the cross section of the bulge arranged on the surface can be 0.2mm x 0.2mm square, and the height of the bulge is 0.1 mm; the number of the protrusions may be 2 to 10, and the larger the number of the protrusions is, the larger an area in which the plasma layer can be formed is. It should be understood that the size of the excitation electrode 111, the size of the protrusion on the excitation electrode 111, and the number of the protrusions are all examples, and corresponding values may be set according to different requirements, which is not limited in this application.
In one embodiment, the excitation electrode 111 is connected to the main body of the plasma surgical apparatus via the cable assembly 12, i.e., the main body supplies power to the excitation electrode 111 via the cable assembly 12; the return electrode 112 is connected to the main unit of the plasma surgical apparatus through the cable assembly 12, that is, the main unit supplies power to the return electrode 112 through the cable assembly 12. Further, the excitation electrode 111 is connected to the host computer through a first lead of the cable assembly 12, and the return electrode 112 is connected to the host computer through a second lead of the cable assembly 12.
In one possible implementation, the end of the return electrode 112 (the end not connected to the cable assembly 12), such as the left end hole shown in fig. 2, may be sealed with an insulating material to prevent unwanted tissue from entering the interior of the tubular return electrode 12, thereby increasing the safety factor of the surgical blade. For example, the ends of the return electrode 112 may be closed with epoxy.
Optionally, the excitation electrode 111 is made of a high-temperature-resistant metal material, for example, a tungsten alloy material or a platinum alloy material may be used.
Optionally, the material of the return electrode is stainless steel, and further, may be 304 stainless steel. The 304 stainless steel has the characteristics of corrosion resistance, good toughness, easy processing and the like.
In some embodiments, the insulating layer on the surface of the excitation electrode 111 is a heat-shrinkable high-temperature insulating layer; the insulating layer on the surface of the return electrode 112 may also be a heat-shrinkable high-temperature insulating layer.
Further, the plasma surgical head may further include a handle 13, and the handle 13 may be disposed at the connection of the electrode shaft 11 and the cable assembly 12. The operator can hold the handle 12 to manipulate the excitation electrode 111 and the return electrode 112 of the cutting head into contact with the target tissue.
By adopting the plasma surgical knife head provided by the embodiment, multipoint plasma excitation can be realized, the area of the formed plasma layer is increased, and the working efficiency of the surgical knife head is improved, so that the surgical knife head is beneficial to reducing the surgical time and improving the surgical efficiency, and the diameter of an electrode rod of the surgical knife head is not required to be increased.
In order to increase the area of the plasma layer that can be formed by the plasma surgical head, embodiments of the present application also provide a plasma surgical head, which may be configured as shown in fig. 4 and 5. Wherein, fig. 4 exemplarily shows a schematic perspective structure of the electrode rod of the plasma surgical knife head, and fig. 5 exemplarily shows a schematic sectional view of the electrode rod portion of the plasma surgical knife head.
In this embodiment, the plasma surgical head includes an electrode shaft and a cable assembly connected to the electrode shaft, and has a similar overall structure to the plasma surgical head shown in fig. 3, but the electrode shaft includes an excitation electrode 211 and a return electrode 212 having different structures, as shown in fig. 4 and 5.
Specifically, the loop electrode 212 is a column, an insulating layer is disposed on the loop electrode, N openings are formed in the insulating layer to expose the loop electrode, and N is an integer greater than or equal to 2.
The return electrode 212 is inserted into the excitation electrode 211, and each opening in the insulating layer of the return electrode 212 is located in each opening in the excitation electrode 211, so that a plasma layer can be formed at the position of the opening after the excitation electrode 211 and the return electrode 212 are energized.
Illustratively, the return electrode 212 may be a direct 1mm metal rod, a medical insulating tube capable of resisting high temperature is disposed on the surface of the metal rod, and N holes (4 holes are illustrated in fig. 4 and 5) are formed in the insulating tube, each hole may have a size of 0.5mm by 1mm, and the distance between every two holes may be 0.7 mm; excitation electrode 211 may be a metal tube with a diameter of 1.2mm, and accordingly 4 holes may be formed in excitation electrode 211, each hole may have a size of 0.6mm × 1.2mm, and a distance between every two holes may be 0.5mm, so that after insertion of return electrode 212 into excitation electrode 211, each hole in the insulating layer of return electrode 211 may be located in each hole of excitation electrode 211, thereby enabling a plasma layer to be formed between excitation electrode 211 and return electrode 212 exposed from the insulating layer in operation. It should be understood that, the size and the number of the above openings are all examples, and corresponding numerical values may be set according to different requirements, which is not limited in the embodiment of the present application.
Alternatively, the return electrode 212 may be bonded with epoxy after being inserted into the excitation electrode 211.
In one embodiment, excitation electrode 211 is connected to a host of the plasma surgical device via a cable assembly, i.e., the host supplies power to excitation electrode 211 via the cable assembly; the return electrode 212 is connected to a main body of the plasma surgical apparatus through a cable assembly, that is, the main body supplies power to the return electrode 212 through the cable assembly. Further, the excitation electrode 211 is connected to the host through a first conductive line of the cable assembly, and the return electrode 212 is connected to the host through a second conductive line of the cable assembly.
Optionally, the excitation electrode 111 is made of a high-temperature-resistant metal material, for example, a tungsten alloy material or a platinum alloy material may be used.
Optionally, the material of the return electrode is stainless steel, and further, may be 304 stainless steel. The 304 stainless steel has the characteristics of corrosion resistance, good toughness, easy processing and the like.
In some embodiments, the insulating layer on the surface of the return electrode 212 may also be a heat-shrinkable high-temperature insulating layer; the surface of the excitation electrode 211 may also be heat shrunk with a high temperature insulating layer.
Further, the plasma surgical tool bit may further include a handle, and the handle may be disposed at a connection of the electrode rod and the cable assembly. The operator can hold the handle to control the excitation electrode and the return electrode of the cutter head to contact the target tissue.
By adopting the plasma surgical knife head provided by the embodiment, multipoint plasma excitation can be realized, the area of the formed plasma layer is increased, and the working efficiency of the surgical knife head is improved, so that the surgical knife head is beneficial to reducing the surgical time and improving the surgical efficiency, and the diameter of an electrode rod of the surgical knife head is not required to be increased.
In order to increase the area of a plasma layer that can be formed by the plasma surgical tool tip, the embodiment of the application further provides the plasma surgical tool tip. The plasma surgical head may include an electrode shaft and a cable assembly connected to the electrode shaft, and the overall structure thereof is similar to that of the plasma surgical head shown in fig. 3, but in this embodiment, the electrode shaft includes an excitation electrode 311, a return electrode 312, and a base 313, which may be configured as shown in fig. 6 to 8. Fig. 6 exemplarily shows a schematic perspective view of the electrode shaft of the plasma scalpel head, fig. 7 is a cross-sectional view of the electrode shaft of the plasma scalpel head, fig. 8 is a schematic structural view of the excitation electrode 311, and fig. 9 is a schematic structural view of the base 313.
Specifically, the pedestal 313 has a cylindrical shape, and a groove parallel to the pedestal is formed at one end of the pedestal for embedding the excitation electrode 311.
The structure of the excitation electrode 311 may be as shown in fig. 8, including a base portion and a protrusion portion. Wherein, the base part is strip-shaped and is used for being embedded into the groove of the base 313; the protrusion is formed in a strip shape at one end of the base portion, and is exposed from the base 313 after the base portion is embedded in the base 313.
The return electrode 312 is arc-shaped and wrapped on the base 313, and the return electrode 312 is not in contact with the protruding portion of the excitation electrode 311.
When the plasma surgical blade is energized, the stripe-shaped region between the excitation electrode 311 and the return electrode 312 as shown in FIG. 4 will create a plasma sheath.
In some embodiments, excitation electrode 311 is connected to a host of the plasma surgical device via a cable assembly, i.e., the host supplies power to excitation electrode 311 via the cable assembly; the return electrode 312 is connected to the main body of the plasma surgical apparatus through a cable assembly, i.e., the main body supplies power to the return electrode 312 through the cable assembly. Further, the excitation electrode 311 is connected to the host through a first conductive line of the cable assembly, and the return electrode 312 is connected to the host through a second conductive line of the cable assembly.
Alternatively, the base 313 may be a ceramic base. In one embodiment, the material of the base 313 may be a ceramic material such as zirconia or alumina.
Alternatively, the excitation electrode 311 and the base 313 may be bonded by using epoxy resin, and the return electrode 312 and the base 313 may also be bonded by using epoxy resin.
Optionally, the excitation electrode 111 is made of a high-temperature-resistant metal material, for example, a tungsten alloy material or a platinum alloy material may be used.
Optionally, the material of the return electrode is stainless steel, and further, may be 304 stainless steel. The 304 stainless steel has the characteristics of corrosion resistance, good toughness, easy processing and the like.
Alternatively, an insulating layer may be heat shrunk on the outside of the electrode rod, as shown in fig. 6, and the insulating layer does not cover the opening of the excitation electrode 311.
Further, the plasma surgical tool bit may further include a handle, and the handle may be disposed at a connection of the electrode rod and the cable assembly. The operator can hold the handle to control the excitation electrode and the return electrode of the cutter head to contact the target tissue.
By adopting the plasma surgical knife head provided by the embodiment, the area of the formed plasma layer can be increased, the working efficiency of the surgical knife head is improved, the reduction of the surgical time is facilitated, the surgical efficiency is improved, and the diameter of the electrode rod of the surgical knife head is not required to be increased.
Based on the same technical concept, the embodiment of the present application also provides a plasma surgical device, which may have a structure including: host computer and plasma surgical knife head.
The plasma surgical scalpel head can be the plasma surgical scalpel head in any one of the embodiments, a cable assembly in the plasma surgical scalpel head is connected with a host, and the host supplies power to an excitation electrode and a loop electrode in the plasma surgical scalpel head through the cable assembly in the plasma surgical scalpel head. Specifically, the mainframe may provide a high frequency voltage to the plasma torch such that a plasma sheath is formed between the excitation electrode and the return electrode.
Further, the plasma surgical device may further include a foot switch connected to the main body. When the foot switch is triggered, the main machine supplies power to the plasma surgical knife head according to the preset time. For example, if the preset time is set to 5s, when the operator steps on the foot switch, the main machine supplies power to the plasma surgical blade for 5 s. According to the automatic power supply of time of predetermineeing, can the operating time of automatic control plasma tool bit, reduced operator's the use degree of difficulty.
By adopting the plasma surgical device provided by the embodiment, the area of the plasma layer formed at the cutter head can be increased, and the working efficiency of the surgical cutter head is improved, so that the reduction of the surgical time is facilitated, and the surgical efficiency is improved.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (10)
1. A plasma surgical knife head is characterized by comprising an electrode rod and a cable assembly connected with the electrode rod, wherein the electrode rod comprises an excitation electrode and a return electrode;
the loop electrode is tubular, at least one hollow part is arranged on the surface of the loop electrode, an insulating layer is arranged on the surface of the loop electrode, and the insulating layer does not cover the cross section of the hollow part of the loop electrode;
the excitation electrode is columnar, an insulating layer and at least two bulges are arranged on the surface of the excitation electrode, the at least two bulges are not covered by the insulating layer, the excitation electrode is inserted into the loop electrode, and the at least two bulges are exposed out of the hollow part of the loop electrode, so that a plasma layer is formed between the bulges of the excitation electrode and the loop electrode after the excitation electrode is electrified.
2. The cutter head of claim 1 wherein said second end of said return electrode is closed with an insulating material.
3. A plasma surgical knife head is characterized by comprising an electrode rod and a cable assembly connected with the electrode rod, wherein the electrode rod comprises an excitation electrode and a return electrode;
the loop electrode is columnar, an insulating layer is arranged on the loop electrode, N openings are formed in the insulating layer to expose the loop electrode, and N is an integer greater than or equal to 2;
the excitation electrode is tubular, the surface of the tubular excitation electrode is provided with N openings, and the size of the opening on the surface of the excitation electrode is larger than that of the opening on the insulating layer of the loop electrode;
the loop electrode is inserted into the excitation electrode, and each opening on the loop electrode insulating layer is positioned in each opening on the excitation electrode, so that a plasma layer is formed at the position of the opening after electrification.
4. A plasma surgical knife head is characterized by comprising an electrode rod and a cable assembly connected with the electrode rod, wherein the electrode rod comprises an excitation electrode, a loop electrode and a base;
the base is cylindrical, and one end of the base is provided with a groove parallel to the base and used for embedding the excitation electrode;
the base part of the excitation electrode is strip-shaped, one end of the base part is provided with a strip-shaped protruding part, the base part is embedded into the groove of the base, and the protruding part is exposed out of the base;
the loop electrode is arc-shaped and is wrapped on the base, and the loop electrode is not in contact with the protruding part of the excitation electrode, so that a plasma layer is formed in a strip-shaped area between the excitation electrode and the loop electrode after the loop electrode is electrified.
5. The cutter head of claim 4 wherein said base is a ceramic base.
6. The cutter head according to any one of claims 1 to 5, wherein said excitation electrode is connected to a main body of the plasma surgical apparatus through said cable assembly, and said return electrode is connected to the main body of the plasma surgical apparatus through said cable assembly.
7. Cutter head according to any one of claims 1-5, wherein the material of the return electrode is stainless steel.
8. The tool bit of any one of claims 1-5, wherein the material of the excitation electrode is a tungsten alloy material or a platinum alloy material.
9. A plasma surgical device, comprising: the plasma surgical tool bit of any one of claims 1-8 and a host, wherein a cable assembly in the plasma surgical tool bit is connected to the host, and the host is configured to supply power to the plasma surgical tool bit through the cable assembly.
10. The device of claim 9, further comprising a foot switch connected to the host;
when the foot switch is triggered, the main machine supplies power to the plasma surgical knife head within preset time.
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| CN201910837327.7A CN110507407B (en) | 2019-09-05 | 2019-09-05 | Plasma surgical knife head and plasma surgical device |
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| CN201910837327.7A CN110507407B (en) | 2019-09-05 | 2019-09-05 | Plasma surgical knife head and plasma surgical device |
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