Surgical Electrodes and Systems
By designing the circuit electrode and excitation electrode in the knife head in the surgical electrode, and using permeable holes to introduce conductive fluid, forming plasma and electric fields from the outside to the inside, the problem of stimulation of high-frequency current on nerves and muscles is solved, and the surgery is improved safety and accuracy.
Patent Information
- Application Number
- CN202011207201.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-11-03
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2040-11-03
AI Technical Summary
In some surgeries, high-frequency currents can cause nerve and muscle stimulation, resulting in unnecessary accidental injury, especially when approaching neural tissue.
A surgical electrode is designed, including a knife head, an electrode rod, a drainage tube and a conductive fluid injection tube. The knife head is equipped with a loop electrode and an excitation electrode. The conductive fluid is transported from the loop electrode to the excitation through insulating parts and permeable holes. The electrode forms plasma and electric fields from the outside to the inside, reducing damage to muscles and nerve tissue.
It effectively avoids damage and stimulation to muscles and nerve tissues, ensures that the minimum volume of tissue is in a local electric field, and improves the accuracy and safety of the surgery.
Smart Images
Figure CN112168339B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of surgical blade heads, and in particular to a surgical electrode and system. Background Art
[0002] At present, radiofrequency plasma surgery system is widely used in clinical precision surgery. The radiofrequency plasma surgery system includes a host, surgical electrodes, a foot controller and / or a flow controller.
[0003] Among them, surgical electrodes are an important part of the operation, generally including cables, handles, electrode rods, excitation electrodes and loop electrodes. The excitation electrode and loop electrode are placed at the distal end of the electrode rod close to the target tissue, and the host applies radio frequency energy to achieve cutting, ablation, heating and coagulation of the tissue. In some parts of the operation, it is necessary to provide conductive fluid to generate plasma to achieve the function. Some surgeries also use physiological saline as a conductive fluid and a conductive fluid recovery pipeline. The configuration of plasma surgical electrodes is usually a circular electrode rod with a bipolar structure. The excitation electrode is inside the electrode rod, and the outer stainless steel tube is used as a loop electrode. The excitation electrode and the loop electrode and the outer layer of the stainless steel tube are isolated by an insulating layer. Depending on the surgical site, an RF voltage of 100 to 300V is applied. The spacing between the excitation electrode and the loop electrode is usually 1mm to 3mm, so an electric field of 3000V / CM will be generated between the excitation electrode and the loop electrode.
[0004] During surgery, there are tissues and conductive fluids outside the electrode rods, and the current returns from the excitation electrode through the conductive fluid and tissues to the return electrode. Therefore, during surgery on certain parts of the body, high-frequency currents can cause nerve and muscle stimulation. At the same time, since the plasma moves forward along the electrode rod, it can cause accidental injuries when it is close to nerve tissue, causing unnecessary effects. Summary of the invention
[0005] In view of this, the purpose of the present invention is to provide a surgical electrode and system to overcome the problem that high-frequency current in certain parts of the surgical process can cause nerve and muscle stimulation, cause accidental injury when close to nerve tissue, and cause unnecessary effects.
[0006] To achieve the above objectives, the present invention adopts the following technical solutions:
[0007] A surgical electrode, comprising a cutter head, an electrode rod, a drainage tube and a conductive liquid injection tube; wherein the cutter head is arranged in the electrode rod;
[0008] The cutter head comprises a loop electrode, an exciting electrode and an insulating component; the insulating component is provided with a first water permeable hole;
[0009] The return electrode is a metal tube, the first end of the return electrode is covered with the insulating component, and the excitation electrode is arranged on the insulating component; the second end of the return electrode is connected with the conductive liquid injection tube to inject the conductive liquid; the first end of the return electrode is provided with a second water-permeable hole, so that the conductive liquid passes through the second water-permeable hole and the first water-permeable hole and is transported to the position of the excitation electrode, and the excitation electrode and the return electrode are connected through the conductive liquid;
[0010] The electrode rod is provided with a third water-permeable hole, and the third water-permeable hole is connected with the drainage pipe;
[0011] The excitation electrode and the loop electrode are both used to be electrically connected to an external surgical host.
[0012] Furthermore, the surgical electrode described above further comprises a handle and an electric cable, wherein the electric cable and the conductive liquid injection tube both extend into the handle;
[0013] The electrode rod is connected to the handle;
[0014] The second end of the loop electrode passes through the electrode rod and is connected to the conductive liquid injection tube in the handle. The second end of the loop electrode is also electrically connected to the first end of the cable. The excitation electrode is electrically connected to the first end of the cable through a wire passing through the electrode rod.
[0015] The second end of the cable is used to be electrically connected to the surgical host.
[0016] Furthermore, in the surgical electrode described above, the excitation electrode comprises a mesh excitation electrode.
[0017] Furthermore, in the surgical electrode described above, the excitation electrode also includes a hook-shaped excitation electrode.
[0018] Furthermore, in the surgical electrode described above, the handle is provided with a control button;
[0019] The control button is connected to the surgical host through the cable.
[0020] Furthermore, in the surgical electrode described above, a display light is also provided on the handle;
[0021] The display light is connected to the surgical host through the cable.
[0022] Furthermore, in the surgical electrode described above, the insulating component is made of alumina ceramic material.
[0023] Furthermore, in the surgical electrode described above, the return electrode is made of stainless steel.
[0024] The present invention also provides a surgical system, comprising a surgical host and any one of the above-mentioned surgical electrodes;
[0025] The surgical host is connected to the cable of the surgical electrode.
[0026] Furthermore, in the surgical system described above, the voltage output by the surgical host is in the range of 60V-1000V;
[0027] The radio frequency range output by the surgical host is 100KHz-1MHz.
[0028] The surgical electrode and system of the present invention encloses the return electrode in an insulating component, and sets the excitation electrode on the insulating component. The conductive liquid is transported from the return electrode to the excitation electrode through the provided water-permeable holes. When the external surgical host applies voltage between the excitation electrode and the return electrode, the direction of the generated plasma and electric field is from the outside to the inside. During the operation, it can ensure that the minimum volume of tissue is in the local electric field generated by the electrode, thereby avoiding damage and stimulation to muscle and nerve tissue. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0030] Figure 1 It is a structural diagram provided by one embodiment of the surgical electrode of the present invention;
[0031] Figure 2 is a structural diagram provided by another embodiment of the surgical electrode of the present invention;
[0032] Figure 3 It is a structural diagram provided by an embodiment of the surgical system of the present invention. DETAILED DESCRIPTION
[0033] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.
[0034] Figure 1This is a structural diagram provided by one embodiment of a surgical electrode of the present invention.
[0035] like Figure 1 As shown, the surgical electrode of this embodiment includes a cutter head 10, a drainage tube 11, a conductive liquid injection tube 12 and an electrode rod 14. The cutter head 10 is arranged inside the electrode rod 14.
[0036] The cutter head 10 comprises an insulating component 101 , a return electrode 102 and an exciting electrode 103 ; wherein the insulating component 101 is provided with a first water permeable hole Q1 .
[0037] In a specific embodiment, the return electrode 102 is a metal tube made of stainless steel material, which can conduct electricity. The electrode rod 14 is also a metal tube coated with insulating material, for example, a stainless steel tube coated with insulating material is used as the electrode rod 14. The insulating component 101 is a U-shaped cavity made of alumina ceramic material.
[0038] Specifically, the first end of the loop electrode 102 is covered with the insulating component 101 , the excitation electrode 103 is disposed on the insulating component 101 , and the insulating component 101 provides impedance between the excitation electrode 103 and the loop electrode 102 to prevent electrical contact.
[0039] The conductive liquid injection tube 12 is used to inject the conductive liquid, which may include physiological saline, etc., which is not limited in this embodiment. The second end of the loop electrode 102 is connected to the conductive liquid injection tube 12 to inject the conductive liquid. The first end of the loop electrode 102 is provided with a second water-permeable hole, so that the conductive liquid passes through the second water-permeable hole and the first water-permeable hole Q1 to the position of the excitation electrode 103, and the excitation electrode 103 and the loop electrode 102 are connected through the conductive liquid.
[0040] The excitation electrode 103 and the return electrode 102 are both used to be electrically connected to an external surgical host. The surgical host is used to apply a voltage between the excitation electrode 103 and the return electrode 102. The conductive liquid forms a radio frequency current between the excitation electrode 103 and the return electrode 102, and plasma is generated on the excitation electrode 103 to treat the target tissue. Moreover, the direction of the plasma and electric field generated in this embodiment is from the outside to the inside. During the operation, it can ensure that the minimum volume of tissue is in the local electric field generated by the electrode, thereby avoiding damage and stimulation to muscle and nerve tissue. In addition, a third water-permeable hole Q3 is provided on the electrode rod 14, and the third water-permeable hole Q3 is connected to the drainage tube 11. The area between the return electrode 102 and the electrode rod 14 can be used as a drainage channel. The injected conductive liquid and the gas and tissue residue generated by the operation can be drained to the collection device at the rear end of the drainage tube 11 through the third water-permeable hole Q3 provided on the electrode rod 14.
[0041] The surgical electrode of this embodiment has the return electrode 102 enclosed in the insulating component 101, and the exciting electrode 103 is arranged on the insulating component 101. The conductive liquid is transported from the return electrode 102 to the exciting electrode 103 through the provided water-permeable holes. When the external surgical host applies voltage between the exciting electrode 103 and the return electrode 102, the direction of the generated plasma and electric field is from the outside to the inside. During the operation, it can ensure that the minimum volume of tissue is in the local electric field generated by the electrode, thereby avoiding damage and stimulation to muscle and nerve tissue. Further, as Figure 1 As shown, the surgical electrode of this embodiment further includes a handle 13 and a cable 15 . The cable 15 and one end of the conductive liquid injection tube 12 both extend into the handle 13 .
[0042] The electrode rod 14 is connected to the handle 13, the second end of the return electrode 102 passes through the electrode rod 14, and is connected to the conductive liquid injection tube 12 in the handle 13, the second end of the return electrode 102 is also electrically connected to the first end of the cable 15, and the excitation electrode 103 is electrically connected to the first end of the cable 15 through the wire passing through the electrode rod 14. It should be noted that the above-mentioned wire is coated with an insulating material.
[0043] The second end of the cable 15 is used to be electrically connected to the surgical host. In a specific embodiment, the second end of the cable 15 is detachably connected to the surgical host, that is, when the surgical electrode of this embodiment needs to be used, the cable 15 of the surgical electrode of this embodiment is electrically connected to the surgical host, and when the surgical electrode of this embodiment is not needed, the cable 15 of the surgical electrode of this embodiment can be detached from the surgical host.
[0044] Furthermore, if Figure 1 As shown, in the surgical electrode of this embodiment, the excitation electrode 103 includes a mesh excitation electrode 1031. The mesh excitation electrode 1031 of this embodiment adopts a grid design, which reduces the area of the mesh excitation electrode 1031 while ensuring the passage of physiological saline, ensuring that the area of the loop electrode 102 is more than 3 times that of the excitation electrode 103.
[0045] Figure 2 FIG. 2 is a structural diagram of another embodiment of the surgical electrode of the present invention. Figure 2 As shown, the surgical electrode of this embodiment is Figure 1 On the basis of the illustrated embodiment, the excitation electrode 103 further includes a hook-shaped excitation electrode 1032 .
[0046] Among them, a hook-shaped conductive metal can be used as the hook-shaped excitation electrode 1032, and the conductive metal is connected in the handle 13 through a wire and a cable 15. In addition, a metal tube 16 can also be used as the hook-shaped excitation electrode 1032, the first end of the metal tube 16 is a hook-shaped electrode head, the second end of the metal tube 16 is extended as a wire into the handle 13 and connected to the cable 15, and the non-hook-shaped electrode head part of the metal tube 16 is covered with an insulating material to prevent the user from electric shock during use.
[0047] The mesh-shaped excitation electrode 1031 may be arranged on the upper surface of the insulating component 101, and the hook-shaped excitation electrode 1032 may be arranged on the lower surface of the insulating component 101. Figure 2 As shown, the hook-shaped excitation electrode 1032 can hook and pull out the tissue, perform tissue ablation and hemostasis away from the nerve tissue, reduce tissue stimulation and provide precise treatment. At this time, the tissue in contact with the plasma and electric field is limited, reducing the electrical stimulation of the radio frequency voltage on the exposed tissue. The surgical system is not only used to treat intervertebral disc and UBE surgery, but also suitable for general electrosurgery.
[0048] Furthermore, in the surgical electrode of this embodiment, a control button 17 is provided on the handle 13 , and the control button 17 is electrically connected to the surgical host through the cable 15 .
[0049] The user can select the electrode to be used through the button 17. Specifically, if the user needs to use the mesh excitation electrode 1031, the mesh excitation electrode 1031 can be selected through the button 17. When there is sufficient conductive liquid between the mesh excitation electrode 1031 and the return electrode 102, the surgical host can recognize the control button 17 and apply a radio frequency voltage between the mesh excitation electrode 1031 and the return electrode 102; if the user needs to use the hook-shaped excitation electrode 1032, the hook-shaped excitation electrode 1032 can be selected through the button 17. When there is sufficient conductive liquid between the hook-shaped excitation electrode 1032 and the return electrode 102, the surgical host can recognize the control button 17 and apply a radio frequency voltage between the hook-shaped excitation electrode 1032 and the return electrode 102.
[0050] Furthermore, the surgical electrode of this embodiment is also provided with a display light 18 on the handle 13, and the display light 18 is connected to the surgical host through the cable 15. The display light 18 can display the working status of the surgical electrode. For example, if the surgical electrode is not working, the surgical host can send a first signal to the display light 18 to control the display light 18 to be in an off state; if the hook-shaped excitation electrode 1032 is in a working state, the surgical host can send a second signal to the display light 18 to control the display light 18 to light up red; if the mesh excitation electrode 1031 is in a working state, the surgical host can send a third signal to the display light 18 to control the display light 18 to light up green.
[0051] Figure 3 It is a structural diagram provided by an embodiment of the surgical system of the present invention.
[0052] Based on a general inventive concept, this embodiment also provides a surgical system. Figure 3 As shown, the surgical system of this embodiment includes a surgical host 21 and the surgical electrode 22 of the above embodiment, and the surgical host 21 is connected to the cable of the surgical electrode 22.
[0053] In addition, the surgical system of this embodiment further includes a flow controller 23, a foot controller 24, etc. Figure 3 shown.
[0054] The voltage range of the surgical host 21 of this embodiment is 60V-1000V; the radio frequency range of the surgical host 21 is 100KHz-1MHz. In a specific implementation, the voltage range of the surgical host 21 is 60V-300V; the radio frequency range of the surgical host 21 is 400KHz-1MHz. This embodiment can ensure the reliability and safety of electrical connection, make tissue contact with plasma, treat target tissue, and control the tissue in the electric field formed by the excitation electrode and the loop electrode to a minimum.
[0055] It can be understood that the same or similar parts of the above embodiments can be referenced to each other, and the contents not described in detail in some embodiments can refer to the same or similar contents in other embodiments.
[0056] It should be noted that, in the description of the present invention, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, the meaning of "plurality" refers to at least two.
[0057] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present invention belong.
[0058] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.
[0059] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.
[0060] In addition, each functional unit in each embodiment of the present invention may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.
[0061] The storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk, etc.
[0062] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" 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 may be combined in any one or more embodiments or examples in a suitable manner.
[0063] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.
Claims
1. A surgical electrode, characterized in that: It comprises a cutter head, an electrode rod, a drainage tube and a conductive liquid injection tube; wherein the cutter head is arranged inside the electrode rod; The cutter head comprises a loop electrode, an exciting electrode and an insulating component; the insulating component is provided with a first water permeable hole; The return electrode is a metal tube, the first end of the return electrode is covered with the insulating component, and the excitation electrode is arranged on the insulating component; the second end of the return electrode is connected with the conductive liquid injection tube to inject the conductive liquid; the first end of the return electrode is provided with a second water-permeable hole, so that the conductive liquid passes through the second water-permeable hole and the first water-permeable hole and is transported to the position of the excitation electrode, and the excitation electrode and the return electrode are connected through the conductive liquid; The electrode rod is provided with a third water-permeable hole, and the third water-permeable hole is connected with the drainage pipe; The excitation electrode and the return electrode are both used to be electrically connected to an external surgical host; It also includes a handle and a cable, wherein the cable and the conductive liquid injection tube both extend into the handle; The electrode rod is connected to the handle; The second end of the loop electrode passes through the electrode rod and is connected to the conductive liquid injection tube in the handle. The second end of the loop electrode is also electrically connected to the first end of the cable. The excitation electrode is electrically connected to the first end of the cable through a wire passing through the electrode rod. The second end of the cable is used to be electrically connected to the surgical host; The excitation electrode comprises a mesh excitation electrode, and the loop electrode area is more than 3 times the excitation electrode area; The excitation electrode further comprises a hook-shaped excitation electrode, the mesh-shaped excitation electrode is arranged on the upper surface of the insulating component, and the hook-shaped excitation electrode is arranged on the lower surface of the insulating component, the hook-shaped excitation electrode hooks and pulls out the tissue, and performs tissue ablation and hemostasis in a state away from the nerve tissue; The handle is provided with control buttons; The control button is connected to the surgical host through the cable.
2. The surgical electrode according to claim 1, characterized in that: The handle is also provided with a display light; The display light is connected to the surgical host through the cable.
3. The surgical electrode according to claim 1, characterized in that: The insulating component is made of alumina ceramic material.
4. The surgical electrode according to claim 1, characterized in that: The return electrode is made of stainless steel.
5. A surgical system, characterized in that: It comprises a surgical host and the surgical electrode according to any one of claims 1 to 4; The surgical host is connected to the cable of the surgical electrode.
6. The surgical system according to claim 5, characterized in that: The voltage output by the surgical host is in the range of 60V-1000V; The radio frequency range output by the surgical host is 100KHz-1MHz.