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. A front end of the front handle is provided with an electrode outlet which can move along the axial direction of the front handle. The front handle and the rear handle are connected in a circumferential rotating mode. The electrode core is arranged in the interior of the front handle and the rear handle. A rear end of the electrode core is fixed in the interior of the rear handle and connected with a cable. The position of the electrode outlet is adjusted so that the front end of the electrode core extends out of the electrode outlet and accurately reaches a surgical area. The application solves the technical problems that the head of the existing bipolar radio frequency 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 heads 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's field of view, fiber optic beam angle, electrode bend angle, and the location of the lesion to be treated—determine whether the lesion 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 electrode's deflection angle after insertion and the location to be treated, the operator can only adjust the electrode's deflection angle by rotating their 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, increasing the difficulty of correctly and accurately treating the lesion and raising the surgical risk. During surgery, damage to nerve roots and the dura mater is more likely, leading to symptoms such as numbness, pain, or even sensory abnormalities in the lower limbs. Sometimes, the electrode handle may be rotated to an angle that is impossible to grip correctly, potentially making it impossible to continue the surgery, thus causing great distress to the surgeon.

[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 that can move axially along the front handle. The front handle and the rear handle are rotatably connected. The electrode core passes through the interior of 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. The position of the electrode outlet is adjusted 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 scalpel further includes an outer tube, which is movably disposed on the front handle along the axial direction of the front handle. The front end of the outer tube extends forward of the front handle, and 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, and the electrode core passes through the outer tube, with the front end of the electrode core extending 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 slider that can move along the axial direction of the front handle is disposed in the first receiving cavity. The outer tube is connected to the slider, and the slider is connected to a lever located outside the front handle. Pushing the lever causes the slider and the outer tube to move along the axial direction of the front handle to adjust the length of the front end of the electrode core extending from the electrode outlet.

[0012] 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. The slider is provided with a first 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.

[0013] In a preferred embodiment of the present invention, a spring is provided in the first accommodating cavity, and the two ends of the spring are respectively connected to the slider and the inner wall of the first accommodating cavity, so as to provide a driving force for the slider to return to its original position after the slider moves.

[0014] In a preferred embodiment of the present invention, a sliding hole communicating with the first accommodating cavity is provided on the front handle, a support block is connected between the slider and the lever, the support block is located in the sliding hole, and the lever is disposed near the outer wall of the front handle.

[0015] In a preferred embodiment of the present invention, the support block is provided with a second axial positioning protrusion that can engage with the axial positioning groove to position the slider.

[0016] 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.

[0017] 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.

[0018] In a preferred embodiment of the present invention, a circumferential positioning structure is provided between the front handle and the rear handle to perform positioning during the rotation of the front handle and the rear handle.

[0019] In a preferred embodiment of the present invention, the circumferential positioning structure includes a plurality of circumferential positioning grooves and a plurality of circumferential positioning protrusions disposed at intervals along the circumferential direction on the rear end face of the front handle and the front end face of the rear handle, wherein the circumferential positioning protrusions can be slidably embedded into the corresponding circumferential positioning grooves.

[0020] 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.

[0021] 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.

[0022] 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.

[0023] 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.

[0024] 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.

[0025] 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

[0026] The accompanying drawings are intended only to illustrate and explain the present invention and do not limit the scope of the invention.

[0027] in:

[0028] Figure 1 This is a schematic diagram of the structure of a surgical electrode for an electromagnetic scalpel according to the present invention.

[0029] Figure 2 This is a partially enlarged view of the electrode in a surgical electrode for an electromagnetic scalpel according to the present invention.

[0030] Figure 3 : This is a front cross-sectional view of a surgical electrode for an electromagnetic scalpel according to the present invention.

[0031] Figure 4 This is a top view of a surgical electrode for an electromagnetic scalpel according to the present invention.

[0032] Figure 5 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 6 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] Figure 7 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.

[0035] The reference numerals in the accompanying drawings of this invention are:

[0036] 1. Front handle; 101. First accommodating cavity;

[0037] 102. Sliding hole; 103. Circumferential positioning groove;

[0038] 104. Front structural component; 105. Axial positioning groove;

[0039] 2. Rear handle; 201. Second receiving cavity;

[0040] 202. Locking channel; 203. Circumferential positioning protrusion;

[0041] 204. Rear structural components; 3. Outer tube;

[0042] 4. Electrode core; 401. Insulating tube;

[0043] 4011, First cavity; 4012, Second cavity;

[0044] 402. Positive electrode wire; 403. Negative electrode wire;

[0045] 5. Cables; 6. Slider;

[0046] 601. Support block; 7. Pulling block;

[0047] 8. Spring; 9. Partition;

[0048] 10. Front cover; 11. Rear cover;

[0049] 12. Locking ring; 13. First indicator;

[0050] 14. Second identifier. Detailed Implementation

[0051] 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.

[0052] 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.

[0053] 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 that can move along the axial direction of the front handle 1. The rear end of the front handle 1 is rotatably connected to the front end of the rear handle 2. The electrode core 4 is 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. The position of the electrode outlet can be adjusted so that the front end of the electrode core 4 can extend from the electrode outlet to the outside of the front handle 1.

[0054] 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 along the axial direction of the front handle 1 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.

[0055] 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.

[0056] 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.

[0057] 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 using a fastener with good insulation and heat resistance, thereby improving the stability of the connection between the positive electrode wire 402 and the negative electrode wire 403 and the insulating tube 401.

[0058] 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.

[0059] In an optional embodiment of the present invention, such as Figure 3 , Figure 4As shown, the surgical electrode for the electromagnetic scalpel of the present invention also includes an outer tube 3. The outer tube 3 is movably mounted on the front handle 1 along the axial direction of the front handle 1. The front end of the outer tube 3 extends forward of the front handle 1. The front handle 1, the rear handle 2, and the outer tube 3 are coaxially arranged. An opening is provided on the outer tube 3 near its front end for the front end of the electrode core 4 to extend out. This opening is the electrode outlet. The electrode core 4 passes through the outer tube 3, and the front end of the electrode core 4 can extend out of the outer tube 3 through the electrode outlet. Since the electrode outlet is located on the wall of the outer tube 3, the front end of the electrode core 4 can extend out of the front handle 1 through the electrode outlet at a fixed tilt angle.

[0060] In an optional embodiment of the present invention, such as Figure 3 As shown, a first receiving cavity 101 is formed inside the front handle 1. A slider 6 that can move along the axial direction of the front handle 1 is provided in the first receiving cavity 101. The rear end of the outer tube 3 is fixedly connected to the slider 6. The slider 6 is connected to a lever 7 located outside the front handle 1. During use, the operator can push the lever 7 to make the lever 7 drive the slider 6 and the outer tube 3 to move along the axial direction of the front handle 1, thereby adjusting the length of the front end of the electrode core 4 extending from the electrode outlet.

[0061] Furthermore, such as Figure 3 As shown, the inner wall of the first accommodating cavity 101 is provided with a plurality of axial positioning grooves 105. The axial positioning grooves 105 are annular grooves arranged along the circumference of the first accommodating cavity 101. The axial positioning grooves 105 are arranged at axial intervals along the first accommodating cavity 101. The slider 6 is provided with a first axial positioning protrusion (not shown) that can engage with the axial positioning grooves 105. The distance between two adjacent axial positioning grooves 105 can be preset. During the process of pushing the slider 6 to slide axially in the first accommodating cavity 101, it can slide through the first axial positioning protrusion and engage with different axial positioning grooves 105 to position the sliding position of the slider 6. 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] Furthermore, such as Figure 3 As shown, the cross-section of the lever 7 is triangular. The bottom surface of the lever 7 is close to the outer wall of the front handle 1. The top surface of the lever 7 is provided with anti-slip texture to increase friction and make it easier for the operator to move the lever 7 by pushing it with their fingers.

[0063] Furthermore, such as Figure 3As shown, a spring 8 is provided in the first accommodating cavity 101. The extension and retraction direction of the spring 8 is the same as the movement direction of the slider 6. One end of the spring 8 is connected to the slider 6, and the other end of the spring 8 is connected to the inner wall of the first accommodating cavity 101. The spring 8 can provide a driving force for the slider 6 to return to its original position after the slider 6 moves (i.e., the elastic force generated by the deformation of the spring 8).

[0064] Specifically, such as Figure 3 As shown, the front handle 1 has a sliding hole 102 that communicates with the first accommodating cavity 101. The sliding hole 102 is an elongated hole that extends along the axial direction of the front handle 1. A support block 601 is connected between the slider 6 and the lever 7. The support block 601 can be movably embedded in the sliding hole 102 along the axial direction of the front handle 1.

[0065] Furthermore, the axial positioning groove can be located inside the sliding hole 102, and a second axial positioning protrusion (not shown) is provided on the outer wall of both sides of the support block 601 to engage with the axial positioning groove. The movement position of the slider 6 is positioned by the engagement of the axial positioning groove and the second axial positioning protrusion, thereby positioning the length of the front end of the electrode core 4 extending out of the electrode outlet, achieving the purpose of axial positioning.

[0066] In an optional embodiment of the present invention, such as Figure 3 , Figure 5 , Figure 6 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.

[0067] Furthermore, such as Figure 3 , Figure 5 , Figure 6 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.

[0068] In an optional embodiment of the present invention, such as Figure 6 , Figure 7 As shown, a circumferential positioning structure is provided between the front handle 1 and the rear handle 2 to position the rotation angle during the rotation of the front handle 1 and the rear handle 2, thereby improving the stability of the front end of the electrode core 4 after rotating to the preset deflection angle, ensuring that the front end of the electrode core 4 can be kept at the lesion position, and ensuring the smooth progress of the operation.

[0069] Specifically, such as Figure 6 , Figure 7 As shown, the circumferential positioning structure includes multiple circumferential positioning grooves 103 disposed on the rear end face of the front handle 1 and multiple circumferential positioning protrusions 203 disposed on the front end face of the rear handle 2. The circumferential positioning grooves 103 are spaced apart and evenly distributed along the circumference of the front handle 1, and the positions of the circumferential positioning protrusions 203 and the circumferential positioning grooves 103 are opposite. During the relative rotation of the front handle 1 and the rear handle 2, the circumferential positioning protrusions 203 can slide into the corresponding circumferential positioning grooves 103, thereby achieving the purpose of rotational positioning.

[0070] In an optional embodiment of the present invention, such as Figure 3 , Figure 4 As shown, the front handle 1 is composed of two front structural components 104 with a semi-circular cross-section, and the rear handle 2 is composed of two rear structural components 204 with a semi-circular cross-section. A front cover 10 is fixedly fitted to 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 104 after they are assembled. A rear cover 11 is fixedly fitted to 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 204 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.

[0071] 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 204 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.

[0072] In an optional embodiment of the present invention, such as Figure 4As 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.

[0073] 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. Different scale marks correspond to different angles, and different scale marks correspond to different circumferential positioning grooves 103. 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. The direction mark points 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 the corresponding first mark 13.

[0074] In this embodiment, the operation process of the surgical electrode for the electromagnetic scalpel is as follows: The operator holds the front handle 1 and the rear handle 2, and pushes the lever 7 backward with their fingers. The lever 7 then moves the slider 6 and the outer tube 3 backward, causing the front end of the electrode core 4 to extend from the electrode outlet on the front handle 1. The rear handle 2 is then 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. The operation is precise and convenient, and it helps to keep the position and rotation direction of the electrode core 4 stable. Since the spring 8 is compressed during the backward movement of the slider 6, after the operation is completed, the operator only needs to release the lever 7. Under the elastic force of the spring 8, the slider 6 moves the outer tube 3 back to its original position, and the front end of the electrode core 4 automatically retracts into the front handle 1.

[0075] 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.

[0076] The features and advantages of the surgical electrode for electromagnetic scalpel of the present invention are as follows:

[0077] 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.

[0078] 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. There is no need to overcome other resistance during the application of force, which saves physical strength and helps to save the operator's physical strength, ensuring the smooth progress of the operation.

[0079] 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.

[0080] 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 that can move along the axial direction of the front handle. The front handle and the rear handle are rotatably connected. The electrode core passes through the interior of 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. The position of the electrode outlet is adjusted so that the front end of the electrode core extends out of the electrode outlet. The surgical electrode for the electromagnetic knife also includes an outer tube, which is movably mounted on the front handle along the axial direction of the front handle. The electrode core passes through the outer tube, and the front end of the electrode core can extend from the electrode outlet to the outside of the outer tube. The front handle has a first receiving cavity inside, and a slider that can move along the axial direction of the front handle is provided in the first receiving cavity. The outer tube is connected to the slider, and the slider is connected to a lever located outside the front handle. Pushing the lever causes the slider and the outer tube to move along the axial direction of the front handle to adjust the length of the front end of the electrode core extending from the electrode outlet. 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 slider is provided with a first 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. A circumferential positioning structure is provided between the front handle and the rear handle. The circumferential positioning structure includes a plurality of circumferential positioning grooves and a plurality of circumferential positioning protrusions that are circumferentially spaced on the rear end face of the front handle and the front end face of the rear handle. The circumferential positioning protrusions can slide into the corresponding circumferential positioning grooves to perform positioning during the rotation of the front handle and the rear handle. 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 front end of the outer tube extends forward of the front handle, and 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.

3. The surgical electrode for an electromagnetic scalpel as described in claim 2, characterized in that, A spring is provided inside the first accommodating cavity, with both ends of the spring connected to the slider and the inner wall of the first accommodating cavity, respectively, to provide a driving force for the slider to return to its original position after it moves.

4. The surgical electrode for an electromagnetic scalpel as described in claim 2, characterized in that, The front handle has a sliding hole that communicates with the first accommodating cavity. A support block is connected between the slider and the lever. The support block is located inside the sliding hole. The lever is located close to the outer wall of the front handle.

5. The surgical electrode for an electromagnetic scalpel as described in claim 4, characterized in that, The support block is provided with a second axial positioning protrusion that can engage with the axial positioning groove to position the slider.

6. The surgical electrode for an electromagnetic scalpel as described in claim 2, 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.

7. The surgical electrode for an electromagnetic scalpel as described in claim 2, 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.

8. The surgical electrode for an electromagnetic scalpel as described in claim 7, 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.

9. The surgical electrode for an electromagnetic scalpel as described in claim 8, 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.

10. 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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