Telescopic nerve electrocoagulation device

Abstract

The present application relates to the technical field of medical devices, and specifically discloses a telescopic nerve electrocoagulation device, including a handle, a stimulation needle, an electrocoagulation needle, a guide tube, a switching mechanism, a telescopic mechanism, a stimulation needle, an impedance drug release system, an electrocoagulation needle, a hemostatic drug release system, a disinfection mechanism, and a decontamination mechanism. The present application can detect the nerve position in advance and release impedance drugs for reducing muscle impedance to improve the detection sensitivity of the stimulation needle, thereby avoiding complex nerve tissue to cut and coagulate the surgical site; before cutting, hemostatic drugs will also be used in advance to stop bleeding at the surgical site. In the process of the telescopic mechanism driving the stimulation needle or the electrocoagulation needle to extend out of the guide tube, the telescopic mechanism can disinfect the stimulation needle or the electrocoagulation needle through the disinfection mechanism, and in the process of the telescopic mechanism driving the stimulation needle or the electrocoagulation needle to retract, the telescopic mechanism can cooperate with the decontamination mechanism to automatically decontaminate the stimulation needle or the electrocoagulation needle and achieve self-cleaning.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a telescopic nerve electrocoagulation device. Background Art

[0002] As an indispensable hemostatic tool in surgical operations, the monopolar electrocoagulator plays an important role in the field of neurosurgery. Its core function is to achieve rapid and effective hemostasis by using the thermal effect generated by high-frequency current to cause the blood vessel wall to dehydrate and shrink, and the blood to coagulate rapidly. The device is mainly composed of three parts: the electrocoagulation blade, the wire and the power supply. The blade is exquisitely designed to accurately contact the bleeding site, while the power supply is responsible for providing a stable high-frequency current.

[0003] During the operation, the doctor only needs to gently touch the electrocoagulation blade to the bleeding point and adjust the appropriate current intensity and duration to achieve precise hemostasis. This operation method not only simplifies the surgical steps, but also greatly improves the safety and efficiency of the operation. Therefore, monopolar electrocoagulation devices are widely used in hemostasis treatment of the scalp, muscles, dura mater and brain tissue, especially when dealing with bleeding from larger blood vessels, and their effects are particularly significant.

[0004] Although monopolar electrocoagulation devices perform well in surgical operations, their application still faces many challenges in certain special scenarios. Especially in neurosurgery, due to the limited field of view of the surgical area, the complex and changeable course of nerves, and the part that needs surgery may be hidden inside the complex nerves, doctors need to be extra cautious when operating the monopolar electrocoagulation device to go deep. The complex nerves increase the difficulty of surgical instruments reaching the surgical site. It is very likely that the monopolar electrocoagulation device will touch the patient's nerves during the deep insertion process due to poor insertion position and angle, thereby causing physical compression or damage to the patient's nerves, increasing the difficulty and risk of the operation.

[0005] In view of the defects existing in the above-mentioned surgical process, the monopolar electrocoagulator is improved to meet the needs of complex surgical scenarios and reduce the difficulty and risk of the operation. Summary of the invention

[0006] In order to reduce the complexity of the operation and the possible risks, the present application provides a telescopic nerve electrocoagulation device.

[0007] The telescopic nerve electrocoagulation device provided in this application adopts the following technical solution:

[0008] A telescopic nerve electrocoagulation device comprises a hollow handle, wherein a stimulation needle and an electrocoagulation needle are respectively arranged in the handle, and a guide tube penetrating the end is arranged at the front end of the handle, wherein the handle is provided with:

[0009] A switching mechanism, used for driving the stimulation needle and the electrocoagulation needle to rotate in sequence until they are directly opposite to the guide tube;

[0010] A telescopic mechanism, used for driving the stimulation needle or electrocoagulation needle that rotates to face the guide tube to extend from the guide tube to the front end of the handle, or for driving the stimulation needle or electrocoagulation needle that extends from the front end of the handle to be retracted into the handle;

[0011] An impedance drug release system capable of reducing muscle impedance is integrated on the side wall of the stimulation needle near the front end, and a hemostatic drug release system capable of reducing bleeding is integrated on the side wall of the electrocoagulation needle near the front end;

[0012] A disinfection mechanism, used for spraying a medical disinfectant on the stimulation needle or the electrocoagulation needle extended or retracted from the handle, and when the telescopic mechanism drives the stimulation needle or the electrocoagulation needle to move out of the guide tube, the telescopic mechanism drives the disinfection mechanism to disinfect the stimulation needle or the electrocoagulation needle;

[0013] A decontamination mechanism, used for decontaminating the stimulating needle or the electrocoagulation needle retracted into the handle. When the telescopic mechanism drives the stimulating needle or the electrocoagulation needle to be retracted into the guide tube, the telescopic mechanism drives the disinfection mechanism to decontaminate the stimulating needle or the electrocoagulation needle.

[0014] The disinfection mechanism is located at a side of the decontamination mechanism away from the front end of the handle.

[0015] By adopting the above technical solution, in neurosurgery and other operations, due to the limited field of view of the surgical area, the complex and changeable nerve courses, and the fact that the part requiring surgery may be hidden inside the complex nerves, doctors need to be extremely cautious when operating the monopolar electrocoagulator to penetrate deeply. It is very likely that the monopolar electrocoagulator may touch the patient's nerves during the penetration process due to poor insertion position and angle, causing physical compression and damage to the patient's nerves, which undoubtedly increases the difficulty of the operation.

[0016] Therefore, before cutting and coagulating the surgical site, the handle is first placed against the patient's skin, the stimulating needle is switched to a position directly opposite to the guide tube through the switching mechanism, and then the stimulating needle is driven to extend from the front end of the handle through the telescopic mechanism, so as to extend into the tissue from the wound. During the extension process, the stimulating needle can detect the position of the nerves inside the tissue, and the impedance drug release system at the front end of the stimulating needle will automatically release impedance drugs to reduce the impedance of the muscle tissue;

[0017] Due to the existence of certain impedance in muscles, when the stimulation current passes through the muscles to reach the nerves in deeper parts, the current received by the nerves will be lost due to the effect of muscle impedance. This may cause the monitoring instrument to make an incorrect judgment because the return current received is insufficient. At this time, the impedance drug released can reduce the influence of muscle impedance on the detection, thereby avoiding the nerves more accurately and reaching the required surgical site.

[0018] When the stimulation needle reaches the surgical site, the telescopic mechanism drives the stimulation needle back into the handle, keeping the position and angle of the handle unchanged, and the switching mechanism quickly switches the electrocoagulation needle to a position opposite to the guide tube, and the telescopic mechanism drives the electrocoagulation needle to be inserted into the surgical site at the same angle and depth. During the operation, the hemostatic drug release system at the front end of the electrocoagulation needle releases hemostatic drugs in advance to the required cutting and coagulation sites, so as to reduce bleeding during the operation and thus reduce the risk of the operation.

[0019] In the above process, when the stimulation needle and the electrocoagulation needle are extended out of the guide tube, the disinfection mechanism can automatically achieve disinfection under the drive of the telescopic mechanism, and when the stimulation needle and the electrocoagulation needle are retracted into the guide tube, the telescopic mechanism can cooperate with the decontamination mechanism to achieve automatic decontamination of the stimulation needle and the electrocoagulation needle.

[0020] The above process can achieve multiple functions that the monopolar coagulator cannot achieve, so that the monopolar coagulator can avoid complex nerve tissue to cut and coagulate the surgical site, and can automatically complete the disinfection and disposal of the stimulation needle and coagulation needle during the extension and retraction process, thereby making the use of the monopolar coagulator more convenient and reducing the difficulty of surgical operations.

[0021] Optionally, the switching mechanism includes a rotating column, a toggle wheel and a limiting structure, the rotating column is rotatably installed in the inner cavity of the handle, and the end of the rotating column is provided with two snap-in grooves extending along the length direction, the two snap-in grooves are symmetrical about the center of the rotating column, and part of the peripheral walls of the two snap-in grooves pass through the side wall of the rotating column, the stimulation needle and the electrocoagulation needle are respectively slidably engaged in the corresponding snap-in grooves, and a limiting structure for limiting the free rotation of the stimulation needle or the electrocoagulation needle is provided in the snap-in groove;

[0022] The toggle wheel is coaxially fixed to the end of the rotating column and partially extends out of the outer wall of the handle. When the toggle wheel is toggled, the rotating column drives the stimulation needle or the electrocoagulation needle to rotate to face the guide tube.

[0023] The limiting structure is arranged at the end of the rotating column, and is used to limit the toggling angle of the toggling wheel.

[0024] By adopting the above technical solution, when surgery is required, the toggle wheel is turned, and the toggle wheel drives the rotating column to rotate. Under the limiting action of the limiting structure, the position of the stimulation needle is just opposite to the end of the guide tube, which makes it easy for the stimulation needle to extend out of the handle through the guide tube.

[0025] Optionally, the limiting structure includes a limiting plate arranged at the end of the rotating column and a limiting column arranged on the side wall of the toggle wheel, the limiting plate is provided with a semicircular limiting groove, the limiting column extends into the limiting groove, and when the stimulation needle or the electrocoagulation needle rotates to be opposite to the guide tube, the limiting column slides to the end of the limiting groove.

[0026] By adopting the above technical solution, when the toggle wheel is rotated, the toggle wheel drives the stimulation needle or the electrocoagulation needle to rotate along with the rotating column. At this time, the limit column moves in the limit groove. When the limit column moves to the end of the limit groove, the stimulation needle or the electrocoagulation needle moves to a position opposite to the guide tube.

[0027] Optionally, first magnetic blocks are fixed on inner walls at both ends of the limiting groove, and the limiting column is made of ferromagnetic material that can attract the first magnetic block.

[0028] By adopting the above technical solution, the first magnet can adsorb the limit column, so that when the limit column rotates to the end of the limit groove, it can be stably maintained at the end of the limit groove, so that the stimulation needle or the electrocoagulation needle can be stably opposite to the end of the guide tube, facilitating the extension and retraction of the stimulation needle or the electrocoagulation needle.

[0029] Optionally, the telescopic mechanism includes a lever, an active rack, an active gear, a driven gear, a driven rack and a connecting assembly, the lever is slidably mounted on the outer wall of the handle along the length direction and partially extends into the inner cavity of the handle, and the active rack is connected and fixed to the lever extending into the inner cavity of the handle;

[0030] The driving gear and the driven gear are coaxially rotatably installed in the inner cavity of the handle, and the tooth surface radius of the driving gear is smaller than the tooth surface radius of the driven gear;

[0031] The driving rack is meshed with the driving gear, and the driven rack is meshed with the driven gear;

[0032] A linkage structure is provided between the active rack and the guide tube, and the active rack can drive the linkage structure to make the disinfection mechanism and the decontamination mechanism work, and the connecting component can connect and fix the driven rack and the stimulation needle or electrocoagulation needle that is rotated to face the guide tube.

[0033] By adopting the above technical solution, when the lever is pushed toward the front end of the handle, the lever drives the active rack to approach the front end of the handle, and the active gear drives the driven gear to rotate, and the driven gear drives the driven rack to move toward the front end of the handle, and the driven rack drives the stimulation needle or the electrocoagulation needle to move toward the direction of the guide tube through the connecting component;

[0034] At the same time, the active rack automatically works with the disinfection mechanism through the linkage structure, so as to pre-disinfect the stimulation needle or electrocoagulation needle entering the guide tube. When the stimulation needle or electrocoagulation needle has finished working, the lever is moved to the rear end close to the handle. At this time, the driven rack drives the stimulation needle or electrocoagulation needle back into the guide tube. In the process of passing through the guide tube, the active rack realizes automatic decontamination of the stimulation needle or electrocoagulation needle through the cooperation of the linkage structure and the decontamination mechanism, and then disinfects it again through the disinfection mechanism, so that the stimulation needle or electrocoagulation needle can be well disinfected and decontaminated before and after use, making the operation process safer and facilitating the rapid progress of the next operation.

[0035] Optionally, the connecting assembly includes a mounting seat, a rotating rod, a torsion spring, a magnetic plate, a second magnetic block and a stopper, the mounting seat is fixed on the side wall of the rotating rod and is located below the rotating column, the rotating rod is rotatably mounted on the mounting seat, and the magnetic plate is provided in two groups, and the two groups of magnetic plates are respectively mounted on the side walls of the stimulation needle and the electrocoagulation needle;

[0036] The second magnetic block is fixed to the end of the rotating rod, the torsion spring is installed on the mounting seat and can be used to drive the second magnetic block to rotate until it is magnetically connected to the magnetic attraction plate, and the stop block is installed on the inner wall of the handle. When the driven rack drives the stimulation needle or the electrocoagulation needle to be retracted into the corresponding snap-in groove, the stop block can push the end of the rotating rod to separate the second magnetic block from the magnetic attraction plate.

[0037] By adopting the above technical solution, when the stimulation needle or the electrocoagulation needle is located in the rotating column, the block limits the end of the rotating rod, so that the second magnetic block is separated from the magnetic attraction plate. At this time, the rotating column can rotate freely, thereby realizing the switching of the stimulation needle or the electrocoagulation needle. After the position of the stimulation needle or the electrocoagulation needle is switched, the lever is pushed forward to make the driven rack drive the mounting seat to move toward the front end of the handle. The rotating rod is reset under the action of the torsion spring. At this time, the second magnetic block rotates between the two magnetic attraction plates, and the second magnetic block and the two magnetic attraction plates attract each other, thereby driving the movement of the stimulation needle or the electrocoagulation needle.

[0038] Optionally, the disinfection mechanism includes a liquid storage tank, an air pressure tank, a piston plate, a connecting rod and a pressing ball, the liquid storage tank is annularly covered on the outer peripheral wall of the guide tube, and a medical disinfectant is installed in the cavity, a plurality of spray nozzles are spaced apart on the outer wall of the guide tube in the liquid storage tank, one end of each spray nozzle is connected to the liquid storage tank, and the other end is connected to the inner cavity of the guide tube, and the liquid storage tank is also provided with a one-way valve connected to the outside of the guide tube and used for one-way air intake;

[0039] The air pressure chamber is communicated with the liquid storage chamber, the piston plate is slidingly sealed and installed in the air pressure chamber, the connecting rod is arranged on the side of the piston plate away from the liquid storage chamber, and is used to connect and fix the pressing ball to the piston plate;

[0040] The connecting rod is also provided with an elastic member for driving the piston plate to move away from the liquid storage bin;

[0041] When the lever moves toward the front end of the handle, the linkage structure drives the pressing ball to move toward the direction of the liquid storage tank;

[0042] The guide tubes on both sides of the liquid storage bin are provided with sealing gaskets for blocking the medical disinfectant, and the sealing gaskets are provided with openings for the stimulation needle or the electrocoagulation needle to pass through;

[0043] A receiving cavity is provided in the side wall of the guide tube, and a capillary for absorbing the medical disinfectant accumulated between the two sealing gaskets into the receiving cavity is connected between the receiving cavity and the guide tube.

[0044] By adopting the above technical solution, when the stimulation needle or electrocoagulation needle passes through the guide tube, the linkage structure drives the pressing ball to move toward the liquid storage tank, and the pressing ball drives the piston plate to compress the air pressure tank through the connecting rod, and the air pressure in the air pressure tank increases, so that the medical disinfectant in the liquid storage tank is sprayed into the guide tube through the spray nozzle, thereby disinfecting the peripheral wall of the stimulation needle or electrocoagulation needle passing through, and the surface of the stimulation needle or electrocoagulation needle is scraped with the sealing gasket, so that the excess medical disinfectant remains in the guide tube between the two sealing gaskets. The one-way valve can balance the air pressure in the liquid storage tank, so that the piston plate can automatically reset under the action of the elastic member, and the excess medical disinfectant enters the accommodating cavity for storage under the absorption of the capillary.

[0045] Optionally, the linkage structure includes a connecting rod and a slide cylinder, one end of the connecting rod is meshed with the active rack, and the other end is fixedly connected to the slide cylinder, and the slide cylinder is slidably sleeved outside the guide tube, the inner wall of the slide cylinder is set to a concave and convex and continuous curved surface, and the pressing ball slides and abuts against the curved surface of the slide cylinder.

[0046] By adopting the above technical solution, when the lever is pushed toward the front end of the handle, the active rack moves toward the direction close to the front end of the handle. At this time, the active rack drives the connecting rod to move, so that the connecting rod drives the slide tube to move along the outer wall of the guide tube. In this process, the concave and convex surface on the inner wall of the slide tube will drive the pressing ball to move toward the direction close to the liquid storage tank, thereby realizing the change of the air pressure in the air pressure tank, thereby realizing the automatic spraying of the medical disinfectant in the liquid storage tank.

[0047] Optionally, the decontamination mechanism includes a rubber sleeve and a sliding sealing ring arranged on the inner wall of the guide tube, the rubber sleeve is funnel-shaped, and the end with a larger diameter is fixed to the inner wall of the guide tube, and the end with a smaller diameter is fixed to the sliding sealing ring, and the sliding sealing ring can perform sliding sealing and scraping on the outer peripheral wall of the stimulation needle or the electrocoagulation needle passing through the guide tube;

[0048] The guide tube is also provided with a protective structure for preventing dirt accumulated on the rubber sleeve from contaminating the stimulation needle or the electrocoagulation needle extending out of the handle.

[0049] By adopting the above technical solution, when the stimulation needle or the electrocoagulation needle is retracted into the guide tube after work, the connecting rod will drive the sliding tube to move away from the front end of the handle. At this time, the sliding sealing ring will scrape the tissue fluid or dirt on the surface of the stimulation needle or the electrocoagulation needle, so that the tissue fluid or dirt will be retained on the rubber sleeve, thereby wiping the surface of the stimulation needle or the electrocoagulation needle, and then further wiping it through the sealing gasket and disinfecting it with a medical disinfectant, thereby achieving thorough disinfection of the stimulation needle or the electrocoagulation needle.

[0050] When the stimulation needle or the electrocoagulation needle partially extends out of the guide tube, the protective structure can protect the portion of the stimulation needle or the electrocoagulation needle extending out of the handle, so that the tissue fluid or dirt on the rubber sleeve will not contaminate the stimulation needle or the electrocoagulation needle; and when the stimulation needle or the electrocoagulation needle passes through the sliding sealing ring, the protective structure can not only protect the outer surface of the stimulation needle or the electrocoagulation needle, but also clean the tissue fluid or dirt remaining on the rubber sleeve, so that the stimulation needle or the electrocoagulation needle can perform surgery in a clean state.

[0051] Optionally, the protective structure includes a magnetic protective cover, a sealing pad layer and a third magnetic block, the magnetic protective cover is slidably mounted on the inner wall of the guide tube and is located on the side of the rubber sleeve away from the front end of the handle, the magnetic protective cover is funnel-shaped corresponding to the rubber sleeve, and the smaller diameter end of the magnetic protective cover is directly opposite to the smaller diameter end of the rubber sleeve;

[0052] The sealing pad layer is fixedly attached to the magnetic protective cover, and the third magnetic block is fixed to the inner peripheral wall of the slide tube, and can drive the magnetic protective cover to slide in the guide tube when the slide tube slides along the guide tube;

[0053] The magnetic protective cover is arranged in a pointed shape at one end facing the rubber sleeve, and an absorption block for absorbing dirt scraped off the rubber sleeve is arranged on the outer wall of the magnetic protective cover close to the pointed shape.

[0054] By adopting the above technical solution, when the stimulation needle or the electrocoagulation needle moves toward the front end of the handle, the slide tube will move along the guide tube toward the front end of the handle, and the third magnetic block on the inner wall of the slide tube will drive the magnetic protective cover to move toward the sliding sealing ring, and then the pointed end of the magnetic protective cover is inserted into and passes through the sliding sealing ring, and the rubber sleeve is attached to the surface of the magnetic protective cover. Some tissue fluid or dirt remaining on the rubber sleeve will flow along the rubber sleeve to the tip of the magnetic protective cover. At this time, the absorption block will absorb the tissue fluid or dirt, so that the stimulation needle or the electrocoagulation needle can remain clean when passing through the sliding sealing ring.

[0055] In summary, the present application includes at least one of the following beneficial technical effects:

[0056] 1. Before cutting and coagulating the surgical site, the handle is first placed against the patient's skin, the stimulating needle is switched to a position directly opposite the guide tube through the switching mechanism, and then the stimulating needle is driven to extend from the front end of the handle through the telescopic mechanism, so as to extend from the wound into the tissue. During the extension process, the stimulating needle can detect the position of the nerves inside the tissue, and the impedance drug release system at the front end of the stimulating needle will automatically release impedance drugs to reduce the impedance of the muscle tissue;

[0057] Because muscles have a certain impedance, when the stimulation current passes through the muscles to reach the nerves in deeper parts, the current received by the nerves will be lost due to the muscle impedance. This may cause the monitoring instrument to receive insufficient return current and make a wrong judgment. At this time, the impedance drug released can reduce the impact of muscle impedance on the detection, thereby more accurately avoiding the nerves and reaching the desired surgical site.

[0058] 2. When the stimulation needle reaches the surgical site, the telescopic mechanism drives the stimulation needle back into the handle, keeping the position and angle of the handle unchanged, and the switching mechanism quickly switches the electrocoagulation needle to a position directly opposite the guide tube. The telescopic mechanism drives the electrocoagulation needle to be inserted into the surgical site at the same angle and depth. When the needle reaches the surgical site, the hemostatic drug release system at the front end of the electrocoagulation needle releases the hemostatic drug in advance to the required cutting and coagulation sites, thereby reducing bleeding during the operation and thus reducing the risk of the operation;

[0059] 3. The monopolar electrocoagulator can avoid complex nerve tissue to cut and coagulate the surgical site. When the stimulation needle and the electrocoagulation needle are extended out of the guide tube, the disinfection mechanism can automatically disinfect them under the drive of the telescopic mechanism. When the stimulation needle and the electrocoagulation needle are retracted into the guide tube, the telescopic mechanism can cooperate with the decontamination mechanism to achieve automatic decontamination of the stimulation needle and the electrocoagulation needle, which greatly reduces the difficulty of operation and improves the convenience of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0061] Figure 1 is a schematic diagram of the overall structure of the telescopic nerve electrocoagulation device in the embodiment of the present application when the electrocoagulation needle or the stimulation needle is extended;

[0062] Figure 2 It is a schematic diagram of the overall structure of the telescopic nerve electrocoagulation device in the embodiment of the present application after the electrocoagulation needle or stimulation needle is retracted;

[0063] Figure 3 yes Figure 2 A schematic diagram of a portion of the structure of the telescopic nerve electrocoagulation device;

[0064] Figure 4 yes Figure 3 Schematic diagram of the internal structure of the telescopic nerve electrocoagulation device;

[0065] Figure 5 yes Figure 4 Structural schematic diagram of the middle telescopic mechanism;

[0066] Figure 6 yes Figure 4 A schematic diagram of the structure of the switching mechanism from the first perspective;

[0067] Figure 7 yes Figure 4 A schematic diagram of the structure of the switching mechanism in the second perspective;

[0068] Figure 8 yes Figure 4 A cross-sectional view of the middle slide;

[0069] Fig. 9 yes Figure 8 A partial enlarged view of the decontamination mechanism inside the middle guide tube.

[0070] Figure numerals: 1, handle; 2, guide tube; 3, switching mechanism; 31, rotating column; 311, clamping groove; 312, stimulation needle; 313, electrocoagulation needle; 32, toggle wheel; 33, limiting structure; 331, limiting plate; 3311, limiting groove; 3312, first magnetic block; 332, limiting column; 4, telescopic mechanism; 41, toggle rod; 42, active rack; 43, active gear; 44, driven gear; 45, driven rack; 46, connecting assembly; 461, mounting seat; 462 , rotating rod; 463, magnetic plate; 464, second magnetic block; 465, block; 5, disinfection mechanism; 51, liquid storage tank; 52, air pressure tank; 53, piston plate; 54, connecting rod; 55, pressing ball; 6, sealing gasket; 7, accommodating chamber; 71, capillary; 8, linkage structure; 81, connecting rod; 82, slide cylinder; 9, decontamination mechanism; 91, rubber sleeve; 92, sliding sealing ring; 93, protective structure; 931, magnetic protective cover; 9311, absorption block; 932, third magnetic block. DETAILED DESCRIPTION

[0071] The following is combined with Figure 1-9 , further details of this application are given.

[0072] The embodiments of the present application disclose a telescopic nerve electrocoagulation device.

[0073] Reference Figure 1 and Figure 2 , which is a schematic diagram of the overall structure of the telescopic nerve electrocoagulation device in the used and unused states. Figure 2 , Figure 3 and Figure 4 The telescopic nerve electrocoagulation device includes a hollow handle 1, in which a stimulation needle 312 and an electrocoagulation needle 313 are respectively arranged, a guide tube 2 passing through the end is arranged at the front end of the handle 1, and a switching mechanism 3, a telescopic mechanism 4, an impedance drug release system, a hemostatic drug release system, a disinfection mechanism 5 and a decontamination mechanism 9 are respectively arranged in the handle 1.

[0074] The switching mechanism 3 can drive the stimulation needle 312 and the electrocoagulation needle 313 to rotate in sequence to a position directly opposite the guide tube 2, so that the stimulation needle 312 or the electrocoagulation needle 313 can be partially extended out of the handle 1 to perform nerve stimulation and electrocoagulation treatment. The stimulation needle 312 here is the stimulation part on the nerve stimulation electrode, and the electrocoagulation needle 313 is the electrode of the monopolar electrocoagulator.

[0075] The telescopic mechanism 4 can drive the stimulation needle 312 or the electrocoagulation needle 313 that is rotated to face the guide tube 2 to partially extend from the front end of the handle 1 through the guide tube 2, or be used to drive the stimulation needle 312 or the electrocoagulation needle 313 that is partially extended from the front end of the handle 1 to be retracted into the handle 1.

[0076] An impedance drug release system capable of reducing the effect of muscle impedance on the detection of the stimulation needle 312 is integrated on the side wall near the front end of the stimulation needle 312, and a hemostatic drug release system capable of reducing bleeding during the operation of the electrocoagulation needle 313 is integrated on the side wall near the front end of the electrocoagulation needle 313. The impedance drug release system and the hemostatic drug release system are respectively integrated on the peripheral walls near the ends of the stimulation needle 312 and the electrocoagulation needle 313, which are not shown in the drawings.

[0077] When the electrocoagulation needle 313 reaches the surgical site, the hemostatic drug release system integrated on the electrocoagulation needle 313 will automatically release anti-inflammatory drugs for pre-hemostatic treatment of the cutting or coagulation site, thereby facilitating the safe conduct of subsequent surgery.

[0078] Reference Figure 5 , Figure 6 and Figure 7 The disinfection mechanism 5 can spray medical disinfectant on the stimulation needle 312 or the electrocoagulation needle 313 that is extended or retracted from the handle 1. When the telescopic mechanism 4 drives the stimulation needle 312 or the electrocoagulation needle 313 to move outside the guide tube 2, the telescopic mechanism 4 drives the disinfection mechanism 5 to disinfect the stimulation needle 312 or the electrocoagulation needle 313.

[0079] The decontamination mechanism 9 can decontaminate the dirt on the stimulation needle 312 or the electrocoagulation needle 313 in the retraction handle 1. When the telescopic mechanism 4 drives the stimulation needle 312 or the electrocoagulation needle 313 to be retracted into the guide tube 2, the telescopic mechanism 4 drives the disinfection mechanism 5 to decontaminate the stimulation needle 312 or the electrocoagulation needle 313, and the disinfection mechanism 5 is located on the side of the decontamination mechanism 9 away from the front end of the handle 1.

[0080] The following is a detailed description of each of the above-mentioned institutions:

[0081] Reference Figure 4 , Figure 6 and Figure 7 The switching mechanism 3 includes a rotating column 31, a toggle wheel 32 and a limiting structure 33. The rotating column 31 is rotatably installed in the inner cavity of the handle 1, and the end of the rotating column 31 is provided with two snap-in grooves 311 extending along the length direction. The two snap-in grooves 311 are symmetrical about the center of the rotating column 31, and part of the circumferential walls of the two snap-in grooves 311 penetrate the side wall of the rotating column 31. The stimulation needle 312 and the electrocoagulation needle 313 are respectively slidably engaged in the corresponding snap-in grooves 311, and a limiting structure for limiting the free rotation of the stimulation needle 312 or the electrocoagulation needle 313 is provided in the snap-in groove 311.

[0082] The limiting structure includes a limiting protrusion arranged on the outer wall of the stimulation needle 312 or the electrocoagulation needle 313 and a limiting groove opened in the snap-in groove 311. The limiting protrusion is slidably snap-into the limiting groove, thereby preventing the stimulation needle 312 or the electrocoagulation needle 313 from rotating freely in the snap-in groove 311.

[0083] Reference Figure 4 The toggle wheel 32 is coaxially fixed to the end of the rotating column 31 and partially extends out of the outer wall of the handle 1. When the toggle wheel 32 is rotated, the rotating column 31 drives the stimulation needle 312 or the electrocoagulation needle 313 to rotate to face the guide tube 2. The limiting structure 33 is arranged at the end of the rotating column 31, and is used to limit the toggle angle of the toggle wheel 32, so that the toggle wheel 32 can more accurately rotate the stimulation needle 312 and the electrocoagulation needle 313 to a position facing the guide tube 2.

[0084] Reference Figure 4 , Figure 6 and Figure 7 The limiting structure 33 includes a limiting plate 331 arranged at the end of the rotating column 31 and a limiting column 332 arranged on the side wall of the toggle wheel 32. A semicircular limiting groove 3311 is opened on the limiting plate 331. The limiting column 332 extends into the limiting groove 3311, and when the stimulation needle 312 or the electrocoagulation needle 313 rotates to face the guide tube 2, the limiting column 332 slides to the end of the limiting groove 3311.

[0085] A first magnetic block 3312 is fixed on the inner wall at both ends of the limit groove 3311. The limit column 332 is made of ferromagnetic material that can attract the first magnetic block 3312. The first magnet can adsorb the limit column 332 so that when the limit column 332 rotates to the end of the limit groove 3311, it can be stably maintained at the end of the limit groove 3311, so that the stimulation needle 312 or the electrocoagulation needle 313 can be stably aligned with the end of the guide tube 2, which is convenient for the extension and retraction of the stimulation needle 312 or the electrocoagulation needle 313.

[0086] Reference Figure 4 and Figure 5 The telescopic mechanism 4 includes a lever 41, an active rack 42, a active gear 43, a driven gear 44, a driven rack 45 and a connecting assembly 46. The lever 41 is slidably installed on the outer wall of the handle 1 along the length direction and partially extends into the inner cavity of the handle 1. The active rack 42 is connected and fixed to the lever 41 extending into the inner cavity of the handle 1.

[0087] The driving gear 43 and the driven gear 44 are coaxially rotatably installed in the inner cavity of the handle 1, and the tooth surface radius of the driving gear 43 is smaller than the tooth surface radius of the driven gear 44. The driving rack 42 is meshed with the driving gear 43, and the driven rack 45 is meshed with the driven gear 44. In this embodiment, the tooth surface radius of the driving gear 43 is half of the tooth surface radius of the driven gear 44, so that when the lever 41 moves a certain distance, the driven rack 45 can move twice the distance.

[0088] Reference Figure 3 and Figure 4A linkage structure 8 is provided between the active rack 42 and the guide tube 2. The active rack 42 can drive the linkage structure 8 to make the disinfection mechanism 5 and the decontamination mechanism 9 work. The connecting component 46 can connect and fix the driven rack 45 and the stimulation needle 312 or the electrocoagulation needle 313 that is rotated to face the guide tube 2.

[0089] Reference Figure 4 , Figure 5 and Figure 6 The connecting assembly 46 includes a mounting seat 461, a rotating rod 462, a torsion spring, a magnetic plate 463, a second magnetic block 464 and a stopper 465. The mounting seat 461 is fixed on the side wall of the rotating rod 462 and is located below the rotating column 31. The rotating rod 462 is rotatably mounted on the mounting seat 461. Two groups of magnetic plates 463 are provided. The two groups of magnetic plates 463 are respectively mounted on the side walls of the stimulation needle 312 and the electrocoagulation needle 313.

[0090] The second magnetic block 464 is fixed to the end of the rotating rod 462, the torsion spring is installed on the mounting seat 461 and can be used to drive the second magnetic block 464 to rotate until it is magnetically connected to the magnetic attraction plate 463, and the stop block 465 is installed on the inner wall of the handle 1. When the driven rack 45 drives the stimulation needle 312 or the electrocoagulation needle 313 to be retracted into the corresponding snap-in groove 311, the stop block 465 can push the end of the rotating rod 462 to separate the second magnetic block 464 from the magnetic attraction plate 463.

[0091] Reference Figure 8 The disinfection mechanism 5 includes a liquid storage tank 51, an air pressure tank 52, a piston plate 53, a connecting rod 54 and a pressing ball 55. The liquid storage tank 51 is annularly covered on the outer peripheral wall of the guide tube 2, and a medical disinfectant is installed in the cavity. The medical disinfectant can be medical alcohol or iodine tincture. In this embodiment, the medical disinfectant is iodine tincture. In other feasible embodiments, the medical disinfectant can also be medical alcohol.

[0092] A plurality of spray nozzles are spaced apart on the outer wall of the guide tube 2 in the liquid storage tank 51. One end of each spray nozzle is connected to the liquid storage tank 51, and the other end is connected to the inner cavity of the guide tube 2. The liquid storage tank 51 is also provided with a one-way valve connected to the outside of the guide tube 2 and used for one-way air intake.

[0093] The air pressure chamber 52 is connected to the liquid storage chamber 51, and the piston plate 53 is installed in the air pressure chamber 52 in a sliding seal. The connecting rod 54 is arranged on the side of the piston plate 53 away from the liquid storage chamber 51, and is used to connect and fix the pressing ball 55 to the piston plate 53. The connecting rod 54 is also provided with an elastic part for driving the piston plate 53 to move away from the liquid storage chamber 51. The elastic part adopts a spring, which can enable the connecting rod 54 to drive the piston plate 53 to reset.

[0094] When the lever 41 moves toward the front end of the handle 1, the linkage structure 8 drives the pressing ball 55 to move toward the liquid storage tank 51, so that the piston plate 53 compresses the air pressure tank 52, increasing the air pressure in the air pressure tank 52, so that the medical disinfectant in the liquid storage tank 51 is sprayed out from each spray nozzle, thereby achieving disinfection of the surface of the stimulation needle 312 or the electrocoagulation needle 313.

[0095] Reference Figure 8 Sealing gaskets 6 for blocking the medical disinfectant are provided in the guide tubes 2 on both sides of the liquid storage tank 51, and openings are provided on the sealing gaskets 6 for the stimulation needle 312 or the electrocoagulation needle 313 to pass through. A receiving cavity 7 is provided in the side wall of the guide tube 2, and a capillary 71 for absorbing the medical disinfectant accumulated between the two sealing gaskets 6 into the receiving cavity 7 is connected between the receiving cavity 7 and the guide tube 2.

[0096] When the stimulating needle 312 or the electrocoagulation needle 313 passes through the guide tube 2, the linkage structure 8 drives the pressing ball 55 to move toward the direction close to the liquid storage bin 51, and the pressing ball 55 drives the piston plate 53 to compress the air pressure bin 52 through the connecting rod 54, and the air pressure in the air pressure bin 52 increases, so that the medical disinfectant in the liquid storage bin 51 is sprayed into the guide tube 2 through the spray nozzle, thereby disinfecting the peripheral wall of the stimulating needle 312 or the electrocoagulation needle 313 passing through, and the surface of the stimulating needle 312 or the electrocoagulation needle 313 is scraped off in cooperation with the sealing gasket 6, so that the excess medical disinfectant remains in the guide tube 2 between the two sealing gaskets 6. The one-way valve can balance the air pressure in the liquid storage bin 51, so that the piston plate 53 can automatically reset under the action of the elastic member, and the excess medical disinfectant enters the accommodating chamber 7 for storage under the absorption of the capillary 71.

[0097] Reference Figure 3 and Figure 4 The linkage structure 8 includes a connecting rod 81 and a slide cylinder 82. One end of the connecting rod 81 is meshed with the active rack 42, and the other end is fixedly connected to the slide cylinder 82. The slide cylinder 82 is slidably sleeved outside the guide tube 2. The inner wall of the slide cylinder 82 is set to a concave and convex and continuous curved surface, and the pressing ball 55 slides and abuts on the curved surface of the slide cylinder 82.

[0098] Reference Figure 8 and Fig. 9 The decontamination mechanism 9 includes a rubber sleeve 91 and a sliding sealing ring 92 arranged on the inner wall of the guide tube 2. The rubber sleeve 91 is funnel-shaped, and the end with a larger diameter is fixed on the inner wall of the guide tube 2, and the end with a smaller diameter is fixed to the sliding sealing ring 92. The sliding sealing ring 92 can perform sliding sealing and scraping on the outer peripheral wall of the stimulation needle 312 or the electrocoagulation needle 313 passing through the guide tube 2.

[0099] A protective structure 93 is also provided in the guide tube 2 to prevent dirt accumulated on the rubber sleeve 91 from contaminating the stimulation needle 312 or the electrocoagulation needle 313 extending out of the handle 1. Figure 8 and Fig. 9 The protective structure 93 includes a magnetic protective cover 931, a sealing gasket and a third magnetic block 932. The magnetic protective cover 931 is slidably installed on the inner wall of the guide tube 2 and is located on the side of the rubber sleeve 91 away from the front end of the handle 1. The magnetic protective cover 931 is funnel-shaped corresponding to the rubber sleeve 91, and the smaller diameter end of the magnetic protective cover 931 is opposite to the smaller diameter end of the rubber sleeve 91.

[0100] The sealing pad layer is fixedly fitted in the magnetic protective cover 931, and the third magnetic block 932 is fixed on the inner wall of the slide cylinder 82, and can drive the magnetic protective cover 931 to slide in the guide tube 2 when the slide cylinder 82 slides along the guide tube 2, and the magnetic protective cover 931 is arranged in a pointed shape at one end facing the rubber sleeve 91, and an absorption block 9311 for absorbing dirt scraped off the rubber sleeve 91 is arranged on the outer wall of the magnetic protective cover 931 close to the pointed shape.

[0101] When the stimulation needle 312 or the electrocoagulation needle 313 is retracted into the guide tube 2 after finishing its work, the connecting rod 81 will drive the slide 82 to move away from the front end of the handle 1. At this time, the sliding sealing ring 92 will scrape the tissue fluid or dirt on the surface of the stimulation needle 312 or the electrocoagulation needle 313, so that the tissue fluid or dirt will be retained on the rubber sleeve 91, thereby wiping the surface of the stimulation needle 312 or the electrocoagulation needle 313, and then further wiping it through the sealing gasket 6 and disinfecting it with a medical disinfectant to achieve thorough disinfection of the stimulation needle 312 or the electrocoagulation needle 313.

[0102] When the stimulation needle 312 or the electrocoagulation needle 313 partially extends out of the guide tube 2, the protective structure 93 can protect the portion of the stimulation needle 312 or the electrocoagulation needle 313 extending out of the handle 1, so that the tissue fluid or dirt on the rubber sleeve 91 will not contaminate the stimulation needle 312 or the electrocoagulation needle 313.

[0103] And in the process of the stimulation needle 312 or the electrocoagulation needle 313 passing through the sliding sealing ring 92, the slide tube 82 will move along the guide tube toward the front end of the handle 1, and the third magnetic block 932 on the inner wall of the slide tube 82 will drive the magnetic protective cover 931 to move toward the sliding sealing ring 92, and then the pointed end of the magnetic protective cover 931 is inserted into and passes through the sliding sealing ring 92, and the rubber sleeve 91 is attached to the surface of the magnetic protective cover 931. Some tissue fluid or dirt remaining on the rubber sleeve 91 will flow along the rubber sleeve 91 to the tip of the magnetic protective cover 931. At this time, the absorption block 9311 will absorb the tissue fluid or dirt, so that the stimulation needle 312 or the electrocoagulation needle 313 can remain clean when passing through the sliding sealing ring 92.

[0104] The implementation principle of the telescopic nerve electrocoagulation device in the embodiment of the present application is: in neurosurgery and other operations, due to the limited field of view of the surgical area, the complex and changeable nerve courses, and the part requiring surgery may be hidden inside the complex nerves, the doctor needs to be extremely cautious when operating the monopolar electrocoagulator to penetrate deeply. It is very likely that the monopolar electrocoagulator may touch the patient's nerves during the penetration process due to poor insertion position and angle, causing physical compression on the patient's nerves, thereby causing the patient to feel discomfort or pain, which undoubtedly increases the difficulty of the operation.

[0105] Therefore, before cutting and coagulating the surgical site, the handle 1 is first placed against the patient's skin, and the stimulation needle 312 is switched to a position opposite to the guide tube 2 through the switching mechanism 3. Then, the stimulation needle 312 is driven to extend from the front end of the handle 1 through the telescopic mechanism 4, thereby extending into the tissue from the wound. During the extension process, the stimulation needle 312 can detect the position of the nerves inside the tissue. At this time, the impedance drug release system at the front end of the stimulation needle 312 will release impedance drugs to reduce the impedance of the muscle, thereby reducing the influence of muscle impedance on the detection of the stimulation needle 312.

[0106] When the stimulation needle 312 reaches the surgical site, the stimulation needle 312 is retracted into the handle 1 through the telescopic mechanism 4, and the position and angle of the handle 1 are kept unchanged. The electrocoagulation needle 313 is quickly switched to a position opposite to the guide tube 2 through the switching mechanism 3, and the electrocoagulation needle 313 is driven by the telescopic mechanism 4 to be inserted into the surgical site at the same angle and the same depth. During the operation, the hemostatic drug release system at the front end of the electrocoagulation needle 313 releases hemostatic drugs to the surgical site in advance, so as to alleviate bleeding during the operation of the electrocoagulation needle 313.

[0107] In the above process, when the stimulation needle 312 and the electrocoagulation needle 313 are extended from the guide tube 2, the disinfection mechanism 5 can automatically achieve disinfection under the drive of the telescopic mechanism 4, and when the stimulation needle 312 and the electrocoagulation needle 313 are retracted into the guide tube 2, the telescopic mechanism 4 can cooperate with the decontamination mechanism 9 to achieve automatic decontamination of the stimulation needle 312 and the electrocoagulation needle 313.

[0108] The above process can achieve multiple functions that the monopolar coagulator cannot achieve, so that the monopolar coagulator can avoid complex nerve tissue to cut and coagulate the surgical site, and can automatically complete the disinfection and disposal of the stimulation needle 312 and the coagulation needle 313 during the extension and retraction process, thereby making the use of the monopolar coagulator more convenient and reducing the difficulty of surgical operations.

[0109] The above are all optional embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A telescopic nerve electrocoagulation device, characterized in that: The invention comprises a hollow handle (1), wherein a stimulation needle (312) and an electrocoagulation needle (313) are respectively arranged in the handle (1), a guide tube (2) penetrating the end is arranged at the front end of the handle (1), and the handle (1) is provided with: A switching mechanism (3) is used to drive the stimulation needle (312) and the electrocoagulation needle (313) to rotate in sequence until they are directly opposite to the guide tube (2); A telescopic mechanism (4) is used to drive the stimulation needle (312) or the electrocoagulation needle (313) that rotates to face the guide tube (2) to extend from the guide tube (2) to the front end of the handle (1), or to drive the stimulation needle (312) or the electrocoagulation needle (313) that extends from the front end of the handle (1) to be retracted into the handle (1); An impedance drug release system capable of reducing muscle impedance is integrated on the side wall of the stimulation needle (312) near the front end, and a hemostatic drug release system capable of reducing bleeding is integrated on the side wall of the electrocoagulation needle (313) near the front end; A disinfection mechanism (5) is used to spray a medical disinfectant on the stimulation needle (312) or the electrocoagulation needle (313) that is extended or retracted from the handle (1); when the telescopic mechanism (4) drives the stimulation needle (312) or the electrocoagulation needle (313) to move outside the guide tube (2), the telescopic mechanism (4) drives the disinfection mechanism (5) to disinfect the stimulation needle (312) or the electrocoagulation needle (313); A decontamination mechanism (9) is used to decontaminate the stimulating needle (312) or the electrocoagulation needle (313) retracted into the handle (1); when the telescopic mechanism (4) drives the stimulating needle (312) or the electrocoagulation needle (313) to be retracted into the guide tube (2), the telescopic mechanism (4) drives the disinfection mechanism (5) to decontaminate the stimulating needle (312) or the electrocoagulation needle (313); The disinfection mechanism (5) is located on a side of the decontamination mechanism (9) away from the front end of the handle (1).

2. The telescopic nerve electrocoagulation device according to claim 1, characterized in that: The switching mechanism (3) comprises a rotating column (31), a toggle wheel (32) and a limiting structure (33); the rotating column (31) is rotatably installed in the inner cavity of the handle (1); and the end of the rotating column (31) is provided with two engaging grooves (311) extending along the length direction; the two engaging grooves (311) are symmetrical about the center of the rotating column (31); and part of the peripheral walls of the two engaging grooves (311) penetrate the side wall of the rotating column (31); the stimulation needle (312) and the electrocoagulation needle (313) are respectively slidably engaged in the corresponding engaging grooves (311); and a limiting structure for limiting the free rotation of the stimulation needle (312) or the electrocoagulation needle (313) is provided in the engaging groove (311); The toggle wheel (32) is coaxially fixed to the end of the rotating column (31) and partially extends out of the outer wall of the handle (1). When the toggle wheel (32) is toggled, the rotating column (31) drives the stimulation needle (312) or the electrocoagulation needle (313) to rotate to face the guide tube (2). The limiting structure (33) is arranged at the end of the rotating column (31) and is used to limit the toggling angle of the toggling wheel (32).

3. The telescopic nerve electrocoagulation device according to claim 2, characterized in that: The limiting structure (33) includes a limiting plate (331) arranged at the end of the rotating column (31) and a limiting column (332) arranged on the side wall of the driving wheel (32), and the limiting plate (331) is provided with a semicircular limiting groove (3311), and the limiting column (332) extends into the limiting groove (3311), and when the stimulation needle (312) or the electrocoagulation needle (313) rotates to face the guide tube (2), the limiting column (332) slides to the end of the limiting groove (3311).

4. The telescopic nerve electrocoagulation device according to claim 3, characterized in that: First magnetic blocks (3312) are fixed on the inner walls at both ends of the limiting groove (3311), and the limiting column (332) is made of a ferromagnetic material that can attract the first magnetic block (3312).

5. The telescopic nerve electrocoagulation device according to claim 2, characterized in that: The telescopic mechanism (4) comprises a lever (41), an active rack (42), an active gear (43), a driven gear (44), a driven rack (45) and a connecting assembly (46); the lever (41) is slidably mounted on the outer wall of the handle (1) along the length direction and partially extends into the inner cavity of the handle (1); the active rack (42) is connected and fixed to the lever (41) extending into the inner cavity of the handle (1); The driving gear (43) and the driven gear (44) are coaxially rotatably mounted in the inner cavity of the handle (1), and the tooth surface radius of the driving gear (43) is smaller than the tooth surface radius of the driven gear (44); The driving rack (42) is meshed with the driving gear (43), and the driven rack (45) is meshed with the driven gear (44); A linkage structure (8) is provided between the active rack (42) and the guide tube (2), and the active rack (42) can drive the linkage structure (8) to make the disinfection mechanism (5) and the decontamination mechanism (9) work, and the connecting component (46) can connect and fix the driven rack (45) and the stimulation needle (312) or the electrocoagulation needle (313) that is rotated to face the guide tube (2).

6. The telescopic nerve electrocoagulation device according to claim 5, characterized in that: The connecting assembly (46) comprises a mounting seat (461), a rotating rod (462), a torsion spring, a magnetic attraction plate (463), a second magnetic block (464) and a stopper (465); the mounting seat (461) is fixed on the side wall of the rotating rod (462) and is located below the rotating column (31); the rotating rod (462) is rotatably mounted on the mounting seat (461); two groups of magnetic attraction plates (463) are provided, and the two groups of magnetic attraction plates (463) are respectively mounted on the side walls of the stimulation needle (312) and the electrocoagulation needle (313); The second magnetic block (464) is fixed to the end of the rotating rod (462), the torsion spring is installed on the mounting seat (461) and can be used to drive the second magnetic block (464) to rotate to be magnetically connected with the magnetic attraction plate (463), and the stop block (465) is installed on the inner wall of the handle (1). When the driven rack (45) drives the stimulation needle (312) or the electrocoagulation needle (313) to be retracted into the corresponding snap-in groove (311), the stop block (465) can push the end of the rotating rod (462) to separate the second magnetic block (464) from the magnetic attraction plate (463).

7. The telescopic nerve electrocoagulation device according to claim 5, characterized in that: The disinfection mechanism (5) comprises a liquid storage tank (51), an air pressure tank (52), a piston plate (53), a connecting rod (54) and a pressing ball (55); the liquid storage tank (51) is annularly covered on the outer peripheral wall of the guide tube (2), and a medical disinfectant is installed in the cavity; a plurality of spray nozzles are arranged at intervals on the outer wall of the guide tube (2) in the liquid storage tank (51); one end of each spray nozzle is connected to the liquid storage tank (51) and the other end is connected to the inner cavity of the guide tube (2); the liquid storage tank (51) is also provided with a one-way valve connected to the outside of the guide tube (2) and used for one-way air intake; The air pressure chamber (52) is connected to the liquid storage chamber (51), the piston plate (53) is installed in the air pressure chamber (52) in a sliding and sealing manner, and the connecting rod (54) is arranged on the side of the piston plate (53) away from the liquid storage chamber (51) and is used to connect and fix the pressing ball (55) to the piston plate (53); The connecting rod (54) is also provided with an elastic member for driving the piston plate (53) to move in a direction away from the liquid storage bin (51); When the lever (41) moves toward the front end of the handle (1), the linkage structure (8) drives the pressing ball (55) to move toward the direction of the liquid storage bin (51); Sealing gaskets (6) for blocking the medical disinfectant are arranged in the guide tubes (2) on both sides of the liquid storage bin (51), and openings are provided on the sealing gaskets (6) for the stimulation needle (312) or the electrocoagulation needle (313) to pass through; A receiving cavity (7) is provided in the side wall of the guide tube (2), and a capillary (71) is connected between the receiving cavity (7) and the guide tube (2) for absorbing the medical disinfectant accumulated between the two sealing gaskets (6) into the receiving cavity (7).

8. The telescopic nerve electrocoagulation device according to claim 7, characterized in that: The linkage structure (8) comprises a connecting rod (81) and a slide cylinder (82), one end of the connecting rod (81) is meshed with the active rack (42), and the other end is fixedly connected to the slide cylinder (82), and the slide cylinder (82) is slidably sleeved outside the guide tube (2), the inner wall of the slide cylinder (82) is configured as a concave-convex and continuous curved surface, and the pressing ball (55) is slidably abutted against the curved surface of the slide cylinder (82).

9. The telescopic nerve electrocoagulation device according to claim 8, characterized in that: The decontamination mechanism (9) comprises a rubber sleeve (91) and a sliding sealing ring (92) arranged on the inner wall of the guide tube (2); the rubber sleeve (91) is funnel-shaped, and the end with a larger diameter is fixed to the inner wall of the guide tube (2), and the end with a smaller diameter is fixed to the sliding sealing ring (92); the sliding sealing ring (92) can perform sliding sealing and scraping on the outer peripheral wall of the stimulation needle (312) or the electrocoagulation needle (313) passing through the guide tube (2); The guide tube (2) is also provided with a protective structure (93) for preventing dirt accumulated on the rubber sleeve (91) from contaminating the stimulation needle (312) or the electrocoagulation needle (313) extending outside the handle (1).

10. The telescopic nerve electrocoagulation device according to claim 9, characterized in that: The protective structure (93) comprises a magnetic protective cover (931), a sealing cushion layer and a third magnetic block (932); the magnetic protective cover (931) is slidably mounted on the inner wall of the guide tube (2) and is located on the side of the rubber sleeve (91) away from the front end of the handle (1); the magnetic protective cover (931) is funnel-shaped corresponding to the rubber sleeve (91), and the smaller diameter end of the magnetic protective cover (931) is directly opposite to the smaller diameter end of the rubber sleeve (91); The sealing pad layer is fixedly attached to the magnetic protective cover (931), and the third magnetic block (932) is fixed to the inner wall of the slide cylinder (82), and can drive the magnetic protective cover (931) to slide in the guide tube (2) when the slide cylinder (82) slides along the guide tube (2); The magnetic protective cover (931) is arranged in a pointed shape at one end facing the rubber sleeve (91), and an absorption block (9311) for absorbing dirt scraped off the rubber sleeve (91) is arranged on the outer wall of the magnetic protective cover (931) close to the pointed shape.

Images