Surgical electrode for an electromagnetic scalpel

Abstract

The application discloses a surgical electrode for an electromagnetic knife, which comprises a front handle, a rear handle and an electrode core. The front end of the front handle is provided with an electrode outlet. The front handle and the rear handle are connected in a circumferential rotating mode. The electrode core is arranged in the interiors of the front handle and the rear handle. The rear end of the electrode is fixed in the interior of the rear handle and connected with a cable. The front handle and the rear handle can move in an axial direction. The position of the electrode core is driven by the rear handle, so that the front end of the electrode core can extend out of the electrode outlet and accurately reach a surgical area. The application solves the technical problems that the head of the existing bipolar radiofrequency ablation electrode cannot be adjusted or the adjustment affects operation and the adjustment precision is low after the electrode enters a lesion area.

Description

Technical Field

[0001] This invention relates to the field of medical devices, and more particularly to a surgical electrode for an electromagnetic scalpel. Background Technology

[0002] Bipolar radiofrequency ablation electrodes have been widely used in minimally invasive spinal surgery systems, which consist of a percutaneous endoscopic discectomy unit (PED), imaging and image processing systems, and supporting minimally invasive spinal surgical instruments. Through minimal trauma, they can completely remove herniated or prolapsed nucleus pulposus while also clearing bone spurs and treating spinal stenosis. PED offers advantages such as less trauma, less bleeding, less damage to surrounding muscles and ligaments, simpler anesthesia, faster postoperative recovery, and lower cost. Bipolar radiofrequency ablation electrodes, acting on ligaments and other soft tissues, can achieve coagulation hemostasis, thermal shrinkage, and ablation, and can also repair damaged annulus fibrosus.

[0003] Existing bipolar radiofrequency ablation electrodes can extend their tips through pushing and pulling operations, but they generally have a fixed deflection angle that cannot be adjusted. When using a percutaneous endoscopic discectomy (PED) to access the lesion area, the small incision makes operation difficult. Five factors—patient position, endoscope viewing angle, fiber optic light delivery angle, electrode bend angle, and the location of the lesion to be treated—determine whether the lesion area can be observed and touched. Adjusting the electrode angle can significantly reduce the difficulty of the operation and the risk of surgical errors. Therefore, when there is a deviation between the deflection angle of the electrode after insertion and the location to be treated, the operator can only adjust the deflection angle of the electrode by rotating the wrist or arm to bring it closer to the lesion area. At this time, the operator may be in an unconventional operating posture or an unfamiliar direction of force, which increases the difficulty of correctly and accurately treating the lesion and raises the surgical risk. During the operation, it is easy to cause damage to nerve roots, dura mater, etc., leading to symptoms such as numbness, pain, or even abnormal sensation in the lower limbs. Sometimes the electrode handle may be rotated to an angle that cannot be properly held, which may lead to the inability to continue the operation, thus causing great trouble for the doctor.

[0004] Furthermore, currently, the extension and retraction of the bipolar radiofrequency ablation electrode tip are achieved by gripping and squeezing a handle offset from the axis of motion. This causes the front and rear parts of the structure, which respectively fix the electrode sleeve and the electrode core, to tighten and open relative to each other, resulting in relative movement of the electrode core relative to the electrode sleeve, thus extending or retracting the electrode head. However, this method has the disadvantage that the operator cannot directly feel the pressure applied to the target tissue by the extended electrode, making it impossible to precisely control the area and depth of tissue coagulation by applying pressure. Moreover, this method requires a considerable force to overcome the elasticity of the handle itself and then squeeze the spring between the front and rear parts to extend the electrode head. The significant force required to operate the bipolar radiofrequency ablation electrode can easily cause hand fatigue for the operator during prolonged procedures, potentially affecting the normal progress of the surgery.

[0005] There is currently no effective solution to the problem that the electrode head cannot be adjusted or the adjustment affects the operation after the existing bipolar radiofrequency ablation electrode enters the lesion area, and the adjustment accuracy is low.

[0006] Therefore, based on years of experience and practice in related industries, the inventor proposes a surgical electrode for electromagnetic scalpels to overcome the shortcomings of existing technologies. Summary of the Invention

[0007] The purpose of this invention is to provide a surgical electrode for an electromagnetic scalpel, which can provide feedback on the pressure of the electrode tip in contact with the tissue during use. The operator can directly feel the feedback pressure, which allows for better control of the effect. Moreover, it is easy to operate, which helps to save the operator's physical strength and ensures the smooth progress of the surgery.

[0008] The objective of this invention can be achieved through the following methods:

[0009] This invention provides a surgical electrode for an electromagnetic scalpel. The surgical electrode for the electromagnetic scalpel includes a front handle, a rear handle, and an electrode core. The front end of the front handle has an electrode outlet, and the rear end of the front handle is rotatably connected to the front end of the rear handle. The electrode core passes through the interior of the front handle and the rear handle. The rear end of the electrode is fixed inside the rear handle and connected to a cable. The front handle and the rear handle are axially movable, and the position of the electrode core is moved by the rear handle so that the front end of the electrode core extends out of the electrode outlet.

[0010] In a preferred embodiment of the present invention, the surgical electrode for the electromagnetic knife further includes an outer tube, which is fixedly disposed on the front handle. The front end of the outer tube extends forward of the front handle. An opening is provided on the outer tube near the front end for the front end of the electrode core to extend out. The opening is the electrode outlet. The electrode core passes through the outer tube, and the front end of the electrode core can extend out of the outer tube from the electrode outlet.

[0011] In a preferred embodiment of the present invention, a first receiving cavity is formed inside the front handle, and a spring is disposed in the first receiving cavity. The front end of the rear handle can be moved axially along the front handle and extended into the first receiving cavity. The spring is located between the inner wall of the first receiving cavity and the front end of the rear handle to provide a driving force for the rear handle to return to its original position after the rear handle is moved.

[0012] In a preferred embodiment of the present invention, the front end of the rear handle is provided with a telescopic portion extending along its axial direction. The telescopic portion can be circumferentially extended into the first receiving cavity, and the telescopic portion can move within the first receiving cavity along the axial direction of the rear handle. The two ends of the spring are respectively connected to the inner wall of the first receiving cavity and the front end of the telescopic portion.

[0013] In a preferred embodiment of the present invention, a plurality of circumferential positioning grooves are provided on the outer wall of the telescopic part at intervals along the circumference of the telescopic part, and a circumferential positioning protrusion is provided on the inner wall of the opening of the first accommodating cavity, which can engage with the circumferential positioning grooves at corresponding positions to position the rotation angle of the electrode core.

[0014] In a preferred embodiment of the present invention, a plurality of axial positioning grooves are provided on the inner wall of the first accommodating cavity, and the axial positioning grooves are arranged at intervals along the axial direction of the first accommodating cavity. An axial positioning protrusion is provided on the outer wall of the telescopic part located in the first accommodating cavity, which can engage with the axial positioning grooves to position the length of the front end of the electrode core extending out of the electrode outlet.

[0015] In a preferred embodiment of the present invention, a retaining ring is provided inside the front handle, the outer tube passes through the central hole of the retaining ring, and the inner wall of the central hole is pressed against the outer wall of the outer tube.

[0016] In a preferred embodiment of the present invention, at least two handles are provided on the outer wall of the front handle, and the two handles are disposed opposite to each other on both sides of the front handle.

[0017] In a preferred embodiment of the present invention, the inner wall of the rear handle is formed with a second receiving cavity, and the front end of the rear handle is provided with a locking channel connecting the first receiving cavity and the second receiving cavity. The cross-sectional area of ​​the locking channel gradually decreases from the first receiving cavity to the second receiving cavity. The electrode core is clamped in the locking channel. The rear ends of the positive electrode wire and the negative electrode wire in the electrode core both extend into the second receiving cavity, and the rear ends of the positive electrode wire and the rear ends of the negative electrode wire are isolated in the second receiving cavity.

[0018] In a preferred embodiment of the present invention, a partition is provided in the second accommodating cavity, and the rear ends of the positive electrode wire and the rear ends of the negative electrode wire are respectively located on both sides of the partition.

[0019] In a preferred embodiment of the present invention, the front handle is composed of two front structural members with a semi-circular cross-section joined together, and the rear handle is composed of two rear structural members with a semi-circular cross-section joined together.

[0020] In a preferred embodiment of the present invention, a front cover is fixedly sleeved on the front end of the front handle to lock the two front structural members after they are spliced ​​together.

[0021] The rear end of the rear handle is fixedly fitted with a rear end cover to lock the two rear structural components after they are assembled.

[0022] In a preferred embodiment of the present invention, a locking ring is fixedly sleeved on the front end of the rear handle so that the inner wall of the locking channel clamps the electrode core.

[0023] In a preferred embodiment of the present invention, a first mark and a second mark are respectively provided on the outer wall of the front handle and the outer wall of the rear handle to indicate the rotation angle between the front handle and the rear handle.

[0024] As described above, the features and advantages of the surgical electrode for an electromagnetic scalpel of the present invention are as follows: an electrode core is inserted inside the front handle and the rear handle. The rear end of the electrode core is fixed inside the rear handle and connected to a cable. Since the front handle and the rear handle are rotatably connected, the operator can adjust the position of the electrode outlet to make the front end of the electrode core extend from the electrode outlet on the front handle during actual use. The operator then rotates the rear handle according to the location of the lesion, so that the deflection angle of the front end of the electrode core changes with the rotation angle of the rear handle, and moves the front end of the electrode core to a preset position for surgical operation. The operation is convenient and labor-saving, and effectively solves the problem that it is difficult to operate or impossible to operate due to the special location of the lesion. Attached Figure Description

[0025] The accompanying drawings are intended only to illustrate and explain the present invention and do not limit the scope of the invention.

[0026] in:

[0027] Figure 1 This is a schematic diagram of the structure of a surgical electrode for an electromagnetic scalpel according to the present invention.

[0028] Figure 2 This is a partially enlarged view of the electrode in a surgical electrode for an electromagnetic scalpel according to the present invention.

[0029] Figure 3 : This is a front cross-sectional view of a surgical electrode for an electromagnetic scalpel according to the present invention.

[0030] Figure 4 This is a top view of a surgical electrode for an electromagnetic scalpel according to the present invention.

[0031] Figure 5 This is a schematic diagram of the internal structure of the front handle of a surgical electrode for an electromagnetic scalpel according to the present invention.

[0032] Figure 6 This is one of the schematic diagrams of the internal structure of the rear handle of a surgical electrode for an electromagnetic scalpel according to the present invention.

[0033] Figure 7 This is a second schematic diagram of the internal structure of the rear handle of a surgical electrode for an electromagnetic scalpel according to the present invention.

[0034] The reference numerals in the accompanying drawings of this invention are:

[0035] 1. Front handle; 101. First accommodating cavity;

[0036] 102. Handle; 103. Front structural component;

[0037] 2. Rear handle; 201. Second receiving cavity;

[0038] 202. Locking channel; 203. Rear structural component;

[0039] 204. Telescopic part; 3. Outer tube;

[0040] 4. Electrode core; 401. Insulating tube;

[0041] 4011, First cavity; 4012, Second cavity;

[0042] 402. Positive electrode wire; 403. Negative electrode wire;

[0043] 5. Cables; 6. Circumferential positioning grooves;

[0044] 7. Circumferential positioning protrusion; 8. Axial positioning groove;

[0045] 9. Partition; 10. Front cover;

[0046] 11. Rear end cover; 12. Locking ring;

[0047] 13. First identifier; 14. Second identifier;

[0048] 15. Retaining ring; 16. Spring. Detailed Implementation

[0049] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0050] In this invention, terms such as "front," "back," "inner," and "outer," which indicate direction, are all related to the appendix. Figure 1 The directions of front, back, inside, and outside are used as a reference, and will be explained here together.

[0051] like Figure 1 , Figure 3 , Figure 4 As shown, the present invention provides a surgical electrode for an electromagnetic scalpel. The surgical electrode for the electromagnetic scalpel includes a front handle 1, a rear handle 2, and an electrode core 4. Both the front handle 1 and the rear handle 2 are cylindrical structures. The front end of the front handle 1 is provided with an electrode outlet. The rear end of the front handle 1 is rotatably connected to the front end of the rear handle. The electrode core 4 passes through the interior of the front handle 1 and the rear handle 2. The rear end of the electrode core 4 is fixed inside the rear handle 2 and connected to a cable 5. The front handle 1 and the rear handle 2 can move axially. By operating the rear handle 2 to move axially, the electrode core 4 can be moved axially so that the front end of the electrode core 4 can extend from the electrode outlet to the outside of the front handle 1.

[0052] This invention features an electrode core 4 inserted inside the front handle 1 and the rear handle 2. The rear end of the electrode core 4 is fixed inside the rear handle 2 and connected to a cable 5. Since the front handle 1 and the rear handle 2 are rotatably connected, the operator can adjust the position of the electrode core 4 by adjusting the axial position of the rear handle 2 during actual use. This changes the relative position of the electrode core 4 with the front handle 1, allowing the front end of the electrode core 4 to extend from the electrode outlet on the front handle 1. The operator then rotates the rear handle 2 according to the location of the lesion, changing the deflection angle of the front end of the electrode core 4. This allows the front end of the electrode core 4 to be moved to a preset position (i.e., the lesion location) for surgical procedures. The operation is convenient and labor-saving, effectively solving the problem of difficulty in operation or inability to perform surgery due to the special location of the lesion.

[0053] Specifically, such as Figure 1 As shown, the electrode core 4 passes through the front handle 1 as a whole, a part of the electrode core 4 is located inside the rear handle 2, the front end of the electrode core 4 can extend out from the electrode outlet on the front handle 1, and the rear end of the electrode core 4 is fixed inside the rear handle 2.

[0054] Furthermore, such as Figure 1 , Figure 2 As shown, the electrode core 4 includes an insulating tube 401, a positive electrode wire 402, and a negative electrode wire 403. The interior of the insulating tube 401 has a first cavity 4011 and a second cavity 4012 that extend through the insulating tube 401 along its axial direction. The first cavity 4011 and the second cavity 4012 are isolated from each other. The positive electrode wire 402 passes through the first cavity 4011, and the negative electrode wire 403 passes through the second cavity 4012.

[0055] Specifically, an insulating part is provided inside the insulating tube 401, which divides the interior of the insulating tube 401 into a first cavity 4011 and a second cavity 4012. Both the first cavity 4011 and the second cavity 4012 have a "D"-shaped cross-section. The insulating tube 401 can be made of, but is not limited to, polytetrafluoroethylene (PTFE), which has good insulation, high temperature resistance, and corrosion resistance. The front ends of the positive electrode wire 402 and the negative electrode wire 403 are respectively bonded and fixed to the insulating tube 401 with a fastening adhesive that has good insulation and heat resistance, thereby improving the stability of the connection between the adhesive and the insulating tube 401.

[0056] Furthermore, a fixed tilt angle can be set at the front of the electrode core 4 so that the front end of the electrode core 4 can extend from the electrode outlet on the front handle 1 and act on the lesion site.

[0057] In an optional embodiment of the present invention, such as Figure 3 , Figure 4 As shown, the surgical electrode for the electromagnetic scalpel also includes an outer tube 3. The rear end of the outer tube 3 is fixedly mounted on the front handle 1, and the front end of the outer tube 3 extends forward of the front handle 1. An opening is provided on the outer tube 3 near the front end of the outer tube 3 for the front end of the electrode core 4 to extend out. The opening is the electrode outlet. The electrode core 4 passes through the outer tube 3, and the front end of the motor core 4 can extend out of the outer tube 3 from the electrode outlet.

[0058] In an optional embodiment of the present invention, such as Figure 3As shown, a first receiving cavity 101 is formed inside the front handle 1. A spring 16 is provided in the first receiving cavity 101. The front end of the rear handle 2 can be moved along the axial direction of the front handle 1 and extended into the first receiving cavity 101. The spring 16 is located between the inner wall of the first receiving cavity 101 and the front end of the rear handle 2. The spring 16 can provide a driving force for the rear handle 2 to return to its original position after the rear handle 2 moves (i.e., the elastic force generated by the deformation of the spring 16).

[0059] Furthermore, such as Figure 3 , Figure 4 As shown, the front end of the rear handle 2 is provided with a telescopic part 204 extending along its axial direction. The cross-sectional area of ​​the telescopic part 204 is smaller than the cross-sectional area of ​​the rear handle 2 body, so that the telescopic part 204 can be circumferentially rotated into the first receiving cavity 101, and the telescopic part 204 can move along the axial direction of the rear handle 2 within the first receiving cavity 101. One end of the spring 16 is connected to the inner wall of the first receiving cavity 101, and the other end of the spring 16 is connected to the front end of the telescopic part 204.

[0060] Furthermore, such as Figure 4 , Figure 5 As shown, multiple circumferential positioning grooves 6 are provided at circumferential intervals (which can be equally spaced) on the outer wall of the telescopic part 204. Each circumferential positioning groove 6 is an elongated groove extending axially along the telescopic part 204. A circumferential positioning protrusion 7 is provided on the inner wall of the opening of the first accommodating cavity 101, which can engage with the corresponding circumferential positioning groove 6 to position the rotation angle of the electrode core. During the rotation of the rear handle 2, the circumferential positioning protrusion 7 can rotate and embed into the corresponding circumferential positioning groove 6, thereby achieving rotational positioning.

[0061] Furthermore, such as Figure 5 As shown, a plurality of axial positioning grooves 8 are provided on the inner wall of the first accommodating cavity 101. The axial positioning grooves 8 are annular grooves arranged along the circumference of the first accommodating cavity 101. The axial positioning grooves 8 are arranged at axial intervals along the axial direction of the first accommodating cavity 101. An axial positioning protrusion (not shown) is provided on the outer wall of the telescopic part 204 located in the first accommodating cavity 101, which can engage with the axial positioning grooves 8. The distance between two adjacent axial positioning grooves 8 can be preset. By pushing the rear handle 2, the telescopic part 204 moves axially in the first accommodating cavity 101. During the axial movement of the telescopic part 204 in the first accommodating cavity 101, it can slide through the axial positioning protrusion and engage with different axial positioning grooves 8, thereby positioning the moving position of the telescopic part 204. In turn, the length of the front end of the electrode core 4 extending out of the electrode outlet can be positioned to achieve the purpose of axial positioning.

[0062] In an optional embodiment of the present invention, such as Figure 3As shown, a fixing ring 15 is fixedly installed inside the front handle 1 and near its front end. The fixing ring 15 has a central hole in the middle. The outer tube 3 passes through the central hole of the fixing ring 15, and the inner wall of the central hole is pressed against the outer wall of the outer tube 3. The outer tube 3 is fixedly connected to the front handle 1 by the fixing ring 15. Then, by pushing the rear handle 2 back and forth, the position of the electrode core 4 can be adjusted axially, so that the front end of the electrode core 4 extends out from the electrode outlet on the front handle 1.

[0063] Furthermore, such as Figures 3 to 5 As shown, at least two handles 102 are provided on the outer wall of the front handle 1. The two handles 102 are positioned opposite each other on both sides of the front handle 1. During operation, the operator can hook the two handles 102 with two fingers (e.g., index and middle fingers) and push the rear end of the rear handle 2 with another finger (e.g., thumb) or palm. The rear handle 2 is pushed forward axially in a manner similar to pushing a syringe, thereby driving the electrode core 4 to move forward synchronously until the front end of the electrode core 4 extends out from the electrode outlet on the front handle 1.

[0064] In an optional embodiment of the present invention, such as Figure 3 , Figure 6 , Figure 7 As shown, the inner wall of the rear handle 2 forms a second receiving cavity 201. The front end of the rear handle 2 is provided with a locking channel 202 that connects the first receiving cavity 101 and the second receiving cavity 201. The cross-sectional area of ​​the locking channel 202 gradually decreases from the first receiving cavity 101 to the second receiving cavity 201 (i.e., a tapered channel). By setting the locking channel 202, the electrode core 4 can be clamped in the locking channel 202. The rear ends of the positive electrode wire 402 and the negative electrode wire 403 in the electrode core 4 both extend into the second receiving cavity 201 (no insulating tube 401 is provided outside the positive electrode wire 402 and the negative electrode wire 403 at this position). The rear ends of the positive electrode wire 402 and the negative electrode wire 403 are isolated in the second receiving cavity 201, and the rear ends of the positive electrode wire 402 and the negative electrode wire 403 are connected to the cable 5.

[0065] Furthermore, such as Figure 3 , Figure 6 , Figure 7 As shown, a partition 9 is provided in the middle of the second accommodating cavity 201. The rear ends of the positive electrode wire 402 and the negative electrode wire 403 are located on both sides of the partition 9, thereby separating the positive electrode wire 402 and the negative electrode wire 403 through the partition 9 to achieve the purpose of insulation.

[0066] In an optional embodiment of the present invention, such as Figure 3 , Figure 4As shown, the front handle 1 is composed of two front structural components 103 with a semi-circular cross-section, and the rear handle 2 is composed of two rear structural components 203 with a semi-circular cross-section. A front cover 10 is fixedly fitted onto the front end of the front handle 1, and the front cover 10 is threadedly connected to the front end of the front handle 1. The front cover 10 can lock and fix the two front structural components 103 after they are assembled. A rear cover 11 is fixedly fitted onto the rear end of the rear handle 2, and the rear cover 11 is threadedly connected to the rear end of the rear handle 2. The rear cover 11 can lock and fix the two rear structural components 203 after they are assembled, thus ensuring the stability of the front handle 1 and the rear handle 2. This assembly structure also facilitates the assembly and disassembly of the structural components within the first accommodating cavity 101 and the second accommodating cavity 201, providing better practicality.

[0067] Furthermore, such as Figure 3 As shown, a locking ring 12 is fixedly sleeved on the front end of the rear handle 2. The locking ring 12 can lock and fix the two rear structural parts 203 after splicing and forming. This not only ensures the stability of the rear handle 2 forming, but also allows the inner wall of the locking channel 202 to clamp the electrode core 4, ensuring a stable connection between the electrode core 4 and the rear handle 2.

[0068] In an optional embodiment of the present invention, such as Figure 4 As shown, a first mark 13 is provided on the outer wall of the front handle 1, and a second mark 14 is provided on the outer wall of the rear handle 2. During the relative rotation of the front handle 1 and the rear handle 2, the rotation angle between the front handle 1 and the rear handle 2 can be displayed by the cooperation of the first mark 13 and the second mark 14, so that the operator can accurately know the rotation angle of the front end of the electrode core 4 and ensure that the front end of the electrode core 4 accurately reaches the lesion position.

[0069] Furthermore, such as Figure 4 As shown, the first mark 13 may be, but is not limited to, a scale mark (scale line) set on the outer wall of the front handle 1 along its circumference, with different scale marks corresponding to different angles; the second mark 14 may be, but is not limited to, a direction mark (arrow) set on the outer wall of the rear handle 2, with the direction mark pointing in the direction of the front handle 1. During the rotation of the rear handle 2, the operator can directly and accurately know the rotation angle of the front end of the electrode core 4 by looking at the second mark 14 and its corresponding first mark 13.

[0070] In this embodiment, the operation process of the surgical electrode for the electromagnetic scalpel is as follows: The operator hooks two fingers (e.g., index and middle fingers) onto the two handles 102 on the front handle 1, and uses another finger (e.g., thumb) or the palm to push the rear end of the rear handle 2, moving the rear handle 2 axially forward in a manner similar to pushing a syringe. This causes the electrode core 4 to move forward synchronously until its front end extends from the electrode outlet on the front handle 1. During the process of pushing the electrode core 4 out, since the palm can be used to push, a large pushing force can be applied, ensuring stable force application. This is suitable for cauterizing tissues that require a certain force to coagulate and stop bleeding. After pushing the electrode core 4 out, the rear handle 2 is rotated to a preset angle, causing the front end of the electrode core 4 to rotate synchronously with the rear handle 2, thereby accurately reaching the lesion location. As the telescopic part 204 compresses the spring 16 during the forward movement of the rear handle 2, once the surgery is completed, the operator only needs to release the rear end of the rear handle 2. Under the elastic force of the spring 16, the rear handle 2 drives the electrode core 4 back to its original position, so that the front end of the electrode core 4 automatically retracts into the front handle 1.

[0071] The surgical electrode for electromagnetic scalpel of the present invention is mainly used in percutaneous endoscopic spinal surgery for tissue coagulation hemostasis, cauterization and ablation, etc.

[0072] The features and advantages of the surgical electrode for electromagnetic scalpel of the present invention are as follows:

[0073] I. The surgical electrode used for the electromagnetic scalpel can change the relative position of the electrode core 4 and the front handle 1 by adjusting the position of the electrode core 4. This allows the front end of the electrode core 4 to extend from the electrode outlet. The operator then rotates the rear handle 2 according to the location of the lesion, causing the front end of the electrode core 4 to rotate at a preset angle and perform axial and circumferential positioning. This allows the front end of the electrode core 4 to be precisely moved to the lesion location. The operation is convenient and labor-saving, effectively solving the problem of difficulty in operation or inability to perform surgery due to the special location of the lesion.

[0074] Second, during the use of this surgical electrode for electromagnetic scalpel, the operator can directly apply pushing force by hand to adjust the position of the electrode core 4. The operator can directly feel the feedback pressure and thus know the magnitude of the applied force, which can better control the effect and accurately control the coagulation effect. The operator does not need to overcome other resistance during the application of force, which saves physical strength and ensures the smooth progress of the operation.

[0075] Third, in the surgical electrode used for electromagnetic scalpel, the rotation angle and axial movement position of the electrode core 4 can be positioned by the circumferential positioning structure and the axial positioning structure, respectively; in addition, the first mark 13 and the second mark 14 can cooperate to enable the operator to accurately know the rotation angle of the electrode core 4, and the operator can also adjust any angle according to actual needs, which has better adjustability, ensuring that the electrode core 4 can accurately reach and stably maintain the lesion position, and ensuring the smooth progress of the operation.

[0076] The above description is merely an illustrative embodiment of the present invention and is not intended to limit the scope of the invention. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of the present invention should fall within the scope of protection of the present invention.

Claims

1. A surgical electrode for an electromagnetic scalpel, characterized in that, The surgical electrode for the electromagnetic scalpel includes a front handle, a rear handle, and an electrode core. The front end of the front handle has an electrode outlet, and the rear end of the front handle is rotatably connected to the front end of the rear handle. The electrode core passes through the interior of the front handle and the rear handle. The rear end of the electrode is fixed inside the rear handle and connected to a cable. The front handle and the rear handle are axially movable. The position of the electrode core is moved by the rear handle so that the front end of the electrode core extends out of the electrode outlet. The front handle has a first receiving cavity inside, and the front end of the rear handle is provided with a telescopic part that extends along its axial direction. The telescopic part can be circumferentially extended into the first receiving cavity, and the telescopic part can move within the first receiving cavity along the axial direction of the rear handle. The outer wall of the telescopic part is provided with a plurality of circumferential positioning grooves spaced apart along the circumference of the telescopic part, and the inner wall of the opening of the first accommodating cavity is provided with a circumferential positioning protrusion that can engage with the circumferential positioning groove at the corresponding position to position the rotation angle of the electrode core. The inner wall of the first accommodating cavity is provided with a plurality of axial positioning grooves, and the axial positioning grooves are arranged at intervals along the axial direction of the first accommodating cavity. The outer wall of the telescopic part located in the first accommodating cavity is provided with an axial positioning protrusion that can engage with the axial positioning grooves to position the length of the front end of the electrode core extending out of the electrode outlet. The inner wall of the rear handle forms a second receiving cavity, and the front end of the rear handle is provided with a locking channel connecting the first receiving cavity and the second receiving cavity. The cross-sectional area of ​​the locking channel gradually decreases from the first receiving cavity to the second receiving cavity. The electrode core is clamped in the locking channel. The rear ends of the positive electrode wire and the negative electrode wire in the electrode core both extend into the second receiving cavity, and the rear ends of the positive electrode wire and the rear ends of the negative electrode wire are isolated in the second receiving cavity.

2. The surgical electrode for an electromagnetic scalpel as described in claim 1, characterized in that, The surgical electrode for the electromagnetic scalpel also includes an outer tube, which is fixedly mounted on the front handle. The front end of the outer tube extends forward of the front handle. An opening is provided on the outer tube near the front end for the front end of the electrode core to extend out. The opening is the electrode outlet. The electrode core passes through the outer tube, and the front end of the electrode core can extend out of the outer tube from the electrode outlet.

3. The surgical electrode for an electromagnetic scalpel as described in claim 2, characterized in that, A spring is provided in the first accommodating cavity, and the front end of the rear handle can be moved along the axial direction of the front handle into the first accommodating cavity. The spring is located between the inner wall of the first accommodating cavity and the front end of the rear handle to provide a driving force for the rear handle to return to its original position after the rear handle is moved.

4. The surgical electrode for an electromagnetic scalpel as described in claim 3, characterized in that, The telescopic part can move within the first accommodating cavity along the axial direction of the rear handle, and the two ends of the spring are respectively connected to the inner wall of the first accommodating cavity and the front end of the telescopic part.

5. The surgical electrode for an electromagnetic scalpel as described in claim 3, characterized in that, The front handle has a retaining ring inside, the outer tube passes through the central hole of the retaining ring, and the inner wall of the central hole is pressed against the outer wall of the outer tube.

6. The surgical electrode for an electromagnetic scalpel as described in claim 3, characterized in that, At least two handles are provided on the outer wall of the front handle, and the two handles are arranged opposite each other on both sides of the front handle.

7. The surgical electrode for an electromagnetic scalpel as described in claim 3, characterized in that, A partition is provided inside the second accommodating cavity, and the rear ends of the positive electrode wire and the negative electrode wire are respectively located on both sides of the partition.

8. The surgical electrode for an electromagnetic scalpel as described in claim 3, characterized in that, The front handle is composed of two front structural components with a semi-circular cross-section, and the rear handle is composed of two rear structural components with a semi-circular cross-section.

9. The surgical electrode for an electromagnetic scalpel as described in claim 8, characterized in that, The front end of the front handle is fixedly fitted with a front end cover to lock the two front structural components after they are assembled. The rear end of the rear handle is fixedly fitted with a rear end cover to lock the two rear structural components after they are assembled.

10. The surgical electrode for an electromagnetic scalpel as described in claim 9, characterized in that, A locking ring is fixedly sleeved on the front end of the rear handle to clamp the electrode core with the inner wall of the locking channel.

11. The surgical electrode for an electromagnetic scalpel as described in claim 1, characterized in that, A first mark and a second mark are respectively provided on the outer wall of the front handle and the outer wall of the rear handle to indicate the rotation angle between the front handle and the rear handle.

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