Electrosurgical smoke discharging pen

Abstract

The utility model provides an electrosurgical smoke discharging pen. The electrosurgical smoke discharging pen comprises a switching mechanism, a telescopic mechanism, a locking mechanism and a pen body rubber coating mechanism. The switching mechanism is connected to one end of the pen body rubber coating mechanism and rotates flexibly relative to the pen body rubber coating mechanism. One end of the locking mechanism is connected to the other end of the pen body rubber coating mechanism, and the other end of the locking mechanism is connected to one end of the telescopic mechanism; the telescopic mechanism is telescopic relative to the pen body rubber coating mechanism, the locking mechanism comprises a lock catch assembly for locking and unlocking the telescopic mechanism, the telescopic assembly is locked when the lock catch assembly is rotated by 90 degrees clockwise, and the telescopic assembly is unlocked when the lock catch assembly is rotated by 90 degrees anticlockwise. The switching mechanism is good in sealing performance and flexible in rotation, the locking mechanism effectively reduces the problems of axial deflection and sliding movement of the smoke discharging pen in the locking state, the telescopic mechanism, the pen body rubber coating mechanism and the switching mechanism form a through type smoke discharging channel, no obstacle or corner exists, and the smoke discharging capacity is high.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to an electrosurgical smoke evacuation pen. Background Art

[0002] The electrosurgical pen allows radio frequency current to pass through the electrode to reach the patient's tissue. The part of the patient that contacts the electrode is quickly heated by the radio frequency current, and cutting, coagulation, drying or cauterization surgery can be performed. Rapid thermal coagulation occurs at the surgical site, which can reduce surgical bleeding.

[0003] The existing electrosurgical pen usually includes a handle and an electrode, the electrode is fixedly mounted on the handle, the electrode is electrically connected to an external high-frequency generator, and a button for controlling the working mode of the electrode is provided on the handle, as shown in the smoking electrosurgical pen disclosed in the patent document with the announcement number CN209186934U, which includes: an electrode, a smoking tube, the smoking tube has a smoking tube cavity, the electrode is slidably arranged in the smoking tube cavity along a first sliding direction, a knife pen shell, a mounting channel is arranged inside the knife pen shell, the smoking tube is slidably arranged in the mounting channel along a second sliding direction, the first sliding direction is parallel to the second sliding direction, and the first sliding direction and the second sliding direction are parallel to the length direction of the smoking tube. Although the electrosurgical pen can realize the telescopic adjustment of the smoking tube, the locking and positioning operation of the smoking tube after the telescopic adjustment is troublesome, and there is a situation where the fixing is unstable and easy to shake. In addition, the existing electrosurgical smoke evacuation knife pen also has the following disadvantages and deficiencies: 1) complex structure and poor stability; 2) the overall appearance is not beautiful and the matching is not coordinated; 3) the flexibility of the tail adapter is poor when rotating; 4) the smoke evacuation capacity is poor. Therefore, we propose a surgical smoke evacuation electrosurgical pen to solve the above problems. Utility Model Content

[0004] In order to solve the above-mentioned deficiencies of the prior art, the purpose of the utility model is to provide an electrosurgical smoke evacuation pen to overcome the defects in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model provides an electrosurgical smoke evacuation pen, including an adapter mechanism, a telescopic mechanism, a locking mechanism and a pen body rubber-wrapped mechanism; the adapter mechanism is connected to one end of the pen body rubber-wrapped mechanism, one end of the locking mechanism is connected to the other end of the pen body rubber-wrapped mechanism, and the other end of the locking mechanism is connected to one end of the telescopic mechanism; wherein the pen body rubber-wrapped mechanism includes a main body hard shell, a main body soft support, a circuit board assembly, a surface cover and a main body inner cavity; a main body inner cavity is penetrated through the bottom of the main body hard shell, the main body soft support is covered on the bottom of the main body hard shell, the circuit board assembly is fixedly attached to the upper surface of the main body hard shell, and the surface cover is buckled on the main body hard shell to form a pen body rubber-wrapped mechanism; the adapter mechanism includes an adapter, an adapter lower cover and an adapter upper cover; the adapter is accommodated in the adapter lower cover, and the adapter upper cover The cover is buckled on the lower cover of the adapter to form an adapter mechanism; the adapter mechanism is installed at one end of the pen body rubber-coated mechanism so that the adapter mechanism can rotate freely relative to the pen body rubber-coated mechanism; the telescopic mechanism includes an electrode assembly and a copper nozzle connected to the electrode assembly; a smoke pipe is arranged on the outer sleeve of the electrode assembly and the copper nozzle; the smoke pipe drives the electrode assembly and the copper nozzle to telescopically move in the main body cavity of the pen body rubber-coated mechanism; the telescopic mechanism is sleeved in the pen body rubber-coated mechanism and is in sliding contact with the circuit board assembly in the pen body rubber-coated mechanism, so that when the circuit is connected and conductive to the electrode assembly, the electrode assembly discharges, cuts, and coagulates when it contacts human tissue; the locking mechanism is sleeved outside the connecting part of the telescopic mechanism and the pen body rubber-coated mechanism to lock the telescopic mechanism when the locking mechanism is rotated 90° clockwise, and unlock the telescopic mechanism when the locking mechanism is rotated 90° counterclockwise.

[0006] Through the above technical scheme, the adapter mechanism connected at one end of the rubber-coated mechanism of the pen body can rotate freely, has the advantages of good sealing and flexible rotation, and can effectively solve the external force caused by the connecting tube, which helps the doctor to operate without being disturbed by external forces; the telescopic mechanism connected at the other end of the rubber-coated mechanism of the pen body can be telescopically moved in the main body inner cavity of the rubber-coated mechanism of the pen body, which is convenient for the doctor to adjust the required length of the smoke evacuation pen during surgery according to the depth of the patient's lesion location, so as to achieve better surgical effect; the locking mechanism is arranged outside the connecting part of the telescopic mechanism and the rubber-coated mechanism of the pen body to realize locking or unlocking the telescopic mechanism, effectively reducing the problem of axial deflection and sliding movement of the smoke evacuation pen in the locked state.

[0007] As a further description of the electrosurgical smoke evacuation pen of the utility model, preferably, the electrode assembly in the telescopic mechanism includes an electrode rod and a beer glue with a hexagonal column, and the beer glue fixing sleeve is arranged outside the electrode rod to form an electrode assembly; the head of the copper nozzle is in the shape of a circular tube, and a flange structure is arranged on the front end ring of the copper nozzle head, and two symmetrical inverted structures are arranged in the middle section of the copper nozzle head; the tail of the copper nozzle is an upwardly bent boss; the smoke pipe is in the shape of a cylinder, including the front part and the rear part of the smoke pipe; a hexagonal hole is embedded in the front part of the smoke pipe, and the hexagonal hole is a cavity with a hexagonal end face, and a step is arranged on the inner ring of the front end of the hexagonal hole. The upper and lower parts of the hole are respectively provided with upper and lower symmetrical reinforcing ribs to fix the hexagonal hole in the front part of the smoke pipe, wherein the length of the lower reinforcing rib is twice the length of the upper reinforcing rib; a connector connected to the front part of the smoke pipe is provided at the front end of the rear part of the smoke pipe, and a notch matching the lower reinforcing rib is provided at the lower part of the connector so that the lower reinforcing rib is embedded in the notch to achieve a tight fit between the rear part of the smoke pipe and the front part of the smoke pipe; a convex block with a concave hole is provided on the upper surface of the tail end of the rear part of the smoke pipe, and the shape of the concave hole matches the shape of the boss, so that the boss extends from the concave hole at the rear part of the smoke pipe and slides in the inner cavity of the main body with the smoke pipe.

[0008] Through the above technical scheme, the beer glue sleeved on the outside of the electrode rod in the electrode assembly in the telescopic mechanism plays a positioning role when assembled with the smoke pipe. The flange structure of the copper nozzle head and the two symmetrical inverted structures play a positioning role when the copper nozzle head is assembled with the smoke pipe. The smoke pipe is divided into two parts, the front part of the smoke pipe and the rear part of the smoke pipe, which is convenient for installing the electrode assembly and the copper nozzle in the smoke pipe. A hexagonal hole is arranged in the front part of the smoke pipe to fix the electrode assembly and the copper nozzle head, and the hexagonal hole is fixed in the smoke pipe through its upper and lower reinforcing ribs. The lower reinforcing rib in the front part of the smoke pipe is embedded in the notch of the front end connector of the rear part of the smoke pipe to achieve a tight fit between the rear part of the smoke pipe and the front part of the smoke pipe. The convex block with a concave hole provided on the upper surface of the tail end of the rear part of the smoke pipe plays the role of positioning the upward bent boss of the tail of the copper nozzle.

[0009] As a further explanation of the electrosurgical smoke evacuation pen described in the utility model, preferably, the electrode assembly is sleeved on the front part of the smoke pipe, and the hexagonal column of the electrode assembly is inserted into the hexagonal hole at the front part of the smoke pipe to realize a tight fit connection between the electrode assembly and the front part of the smoke pipe; the head of the copper nozzle is sleeved in the front part of the smoke pipe, and the flange structure of the copper nozzle head is clamped in the step of the hexagonal hole to fix the copper nozzle head in the front part of the smoke pipe, and the two inverted structures in the middle section of the copper nozzle head are clamped on the end face of the hexagonal hole to fix the copper nozzle head to the front part of the smoke pipe; the rear part of the smoke pipe is sleeved on the copper nozzle and the lower reinforcement rib is inserted into the notch provided at the lower part of the connecting head and matching the lower reinforcement rib to realize a tight fit between the front part of the smoke pipe and the rear part of the smoke pipe.

[0010] Through the above technical solution, the electrode assembly is tightly connected to the hexagonal hole in the front of the smoke pipe through its hexagonal column of beer glue, and the copper nozzle head is tightly connected to the hexagonal hole in the front of the smoke pipe through the flange structure and two symmetrical undercut structures, so that the electrode assembly and the copper nozzle can be stably fixed in the smoke pipe, effectively reducing the shaking of the electrode assembly and the copper nozzle when in use. The tight fit between the rear and front of the smoke pipe also reduces the shaking of the smoke pipe when in use.

[0011] As a further explanation of the electrosurgical smoke evacuation pen described in the utility model, preferably, the main body inner cavity of the pen body rubber-coated mechanism is an integrated connected cavity composed of an upper inverted trapezoidal cavity and a lower cylindrical cavity, so as to just accommodate and limit the smoke tube and allow it to move forward and backward in the main body inner cavity of the pen body rubber-coated mechanism and prevent the smoke tube from rotating, and at the same time exhaust smoke through the through smoke tube and the main body inner cavity.

[0012] Through the above technical solution, the upper inverted trapezoidal cavity of the main body inner cavity limits the smoke pipe, which can prevent the smoke pipe from rotating, so as to achieve the purpose of linear movement of the smoke pipe in the main body inner cavity. Smoke is exhausted through the smoke pipe of the telescopic mechanism and the main body inner cavity of the pen body rubber-wrapped mechanism, so that there are no obstacles or corners in the internal channel of the smoke exhaust pen, and the smoke exhaust pen has a strong smoke exhaust ability.

[0013] As a further explanation of the electrosurgical smoke evacuation pen of the utility model, preferably, a first stopper is provided at the tail end of the main body inner cavity, and when the smoke tube is shortened to the shortest in the main body inner cavity, the first stopper in the main body inner cavity presses against the tail end of the convex block with the concave hole at the rear of the smoke tube; a second stopper is provided at the front end of the main body inner cavity, and when the smoke tube is extended to the longest in the main body inner cavity, the second stopper in the main body inner cavity presses against the front end of the convex block with the concave hole at the rear of the smoke tube to ensure that the smoke tube can freely extend and retract within the set stroke of the main body inner cavity.

[0014] Through the above technical solution, the first stopper at the tail end of the main body inner cavity and the second stopper at the front end thereof jointly constitute the limiting end faces of the longest and shortest distances of the linear motion of the smoke tube in the main body inner cavity, thereby achieving the function of limiting the stroke of the smoke tube's free telescopic movement in the main body inner cavity.

[0015] As a further explanation of the electrosurgical smoke evacuation pen described in the utility model, preferably, a circuit board assembly is set on the main hard shell, including a conductive sheet laid on the main cavity, a cover plate is covered on the conductive sheet, a PCB board is laid on the cover plate, and the PCB board is provided with two metal springs, a positioning hole between the two metal springs and a number of wires, and the two metal springs are respectively covered with silicone sheets; two positioning holes are provided on the surface cover, and two buttons are respectively penetrated through the two positioning holes and fixed therein, so as to fit the surface cover tightly with the main hard shell, so that when the button is pressed, the button presses the silicone sheet, the silicone sheet is subjected to force and transmitted to the metal spring sheet so that the circuit between the PCB board and the conductive sheet is connected to realize power supply; the boss extending from the recessed hole at the rear of the smoke pipe is in sliding contact with the conductive sheet arranged on the main cavity, the conductive sheet is connected to the PCB board through its conductive column, and the conduction is controlled by the button, and the smoke pipe is freely retracted and moved in the main cavity to any position within the set stroke, so that when the circuit is connected and conductive to the electrode assembly, the electrode assembly discharges and cuts and coagulates when it contacts human tissue.

[0016] Through the above technical solution, the conductive sheet is laid on the inner cavity of the main body, and the upwardly bent boss at the tail of the copper nozzle extends from the recessed hole at the rear of the cigarette pipe, so that when the cigarette pipe is telescopically moved in the inner cavity of the main body, the boss maintains sliding contact with the conductive sheet. When the cigarette pipe is telescopically moved at any position, the electrode rod, copper nozzle, conductive sheet, and PCB board of the electrode assembly form a conductive circuit. When the circuit on the PCB board is connected, the electrode assembly can be powered on. The circuit on the PCB board is connected by pressing the button to press the silicone sheet, and the silicone sheet is subjected to force and transmitted to the metal spring to connect the circuit. The operation is simple and convenient. Preferably, two buttons are set. Through the setting of the PCB board, when one of the buttons is pressed, the circuit board is connected to the electrode, so that the electrode discharges when it contacts the human tissue to achieve the cutting function, and when the other button is pressed, the circuit board is connected to the electrode, so that the electrode discharges when it contacts the human tissue to achieve the coagulation function.

[0017] As a further explanation of the electrosurgical smoke evacuation pen described in the utility model, preferably, one end of the main hard shell is integrally connected with a hemispherical structure to be connected to the adapter of the adapter mechanism, and the other end of the main hard shell of the pen body rubber-coated mechanism is integrally connected with a head with a thread to be connected to the locking mechanism; four circumferentially distributed guide notches are provided on the outer ring of the port of the head of the pen body rubber-coated mechanism, and four circumferentially distributed threaded guide grooves are provided on the head of the pen body rubber-coated mechanism, and a trumpet hole with a distance of 4mm outward from the boss is provided at the port of the head, so that when the locking mechanism is assembled, the guide buckle of the locking mechanism is aligned with the guide notch, so that the guide buckle can be forcibly pushed into the threaded guide groove of the head along the guide notch.

[0018] Through the above technical solution, by setting a guide notch outside the port of the head of the pen body rubber coating mechanism and setting a threaded guide groove distributed on its circumference, it is convenient to align the locking mechanism and install it in the threaded guide groove, making the assembly of the locking mechanism simple and convenient. By setting a trumpet hole at the port of the head of the pen body rubber coating mechanism, the locking mechanism is pushed inward or withdrawn outward along the threaded guide groove, so that the locking mechanism can conveniently lock and unlock the cigarette pipe.

[0019] As a further explanation of the electrosurgical smoke evacuation pen described in the utility model, preferably, the adapter of the adapter mechanism is an integrally formed dumbbell-shaped double-hemispherical structure having a front hemisphere and a rear hemisphere; the adapter upper cover has a first curved surface structure covering the upper half of the front hemisphere of the adapter, and the adapter lower cover has a second curved surface structure covering the lower half of the front hemisphere of the adapter, and the first curved surface structure of the adapter upper cover is snap-fitted with the second curved surface structure of the adapter lower cover to form a hemispherical structure that matches the front hemisphere of the adapter; the tail of the face cover has a third curved surface structure covering the upper half of the rear hemisphere of the adapter, and the tail of the main hard shell has a fourth curved surface structure covering the lower half of the rear hemisphere of the adapter, and the third curved surface structure of the tail of the face cover is snap-fitted with the fourth curved surface structure of the tail of the main hard shell to form a hemispherical structure that matches the rear hemisphere of the adapter.

[0020] Through the above technical solution, the adapter mechanism adopts a front and rear double hemisphere wrapping design. After being connected to the tail of the pen body rubber wrapping mechanism, the rotating surface is large and the rotation is flexible, which can effectively solve the external force brought by the connecting tube and help doctors not to be disturbed by external forces during surgery.

[0021] As a further explanation of the electrosurgical smoke evacuation pen of the utility model, preferably, the first curved surface structure of the adapter upper cover and the second curved surface structure of the adapter lower cover are integrally formed, and the third curved surface structure of the rear part of the cover and the fourth curved surface structure of the rear part of the main hard shell are integrally formed.

[0022] Through the above technical solution, the first curved surface structure of the adapter upper cover and the second curved surface structure of the adapter lower cover are set to be integrally formed, which has a good sealing effect. The third curved surface structure of the rear part of the cover and the fourth curved surface structure of the rear part of the main hard shell are set to be integrally formed, which also has a good sealing effect. In this way, the exhaust smoke of the smoke pipe will not escape, thereby achieving a strong smoke exhaust capacity.

[0023] As a further explanation of the electrosurgical smoke evacuation pen described in the utility model, preferably, the locking mechanism includes an outer lock buckle and an inner lock buckle; wherein: four guide buckles are provided on the port ring on the inner side of the inner lock buckle, and a head with a threaded guide groove is provided at the end of the pen body rubber-wrapped mechanism, and the guide buckle plays a rotational guiding role in the threaded guide groove; four elastic extrusion flaps are provided inside the outer lock buckle, and the four elastic extrusion flaps form an inner ring, and a lock buckle inner is sleeved between the outer shell of the outer lock buckle and the inner ring to form a locking mechanism, so that when the head with the threaded groove of the pen body rubber-wrapped mechanism is sleeved in the locking mechanism, when the locking mechanism is rotated 90° clockwise to put the locking mechanism in a locked state, the extrusion flap is forced to shrink inwardly, thereby squeezing the smoke tube assembled therein to achieve a locking effect.

[0024] Through the above technical scheme, when the guide buckle of the locking mechanism is pushed inward into the threaded guide groove of the head of the end of the rubber-coated mechanism of the pen body, the extrusion flap gradually squeezes the cigarette tube assembled therein to achieve a locking effect. When the guide buckle is withdrawn outward from the threaded guide groove, the extrusion flap gradually loosens the cigarette tube to achieve an unlocking effect. This connection method is conducive to improving the stability of the locking mechanism when locking and fixing the cigarette tube, making the telescopic positioning operation of the telescopic mechanism more convenient.

[0025] As a further description of the electrosurgical smoke evacuation pen of the present invention, preferably, three rings are sleeved on the beer rubber of the electrode assembly to prevent slipping.

[0026] Through the above technical solution, the anti-slip effect is achieved by providing three rings on the beer rubber sleeve of the electrode assembly.

[0027] The beneficial effects of the utility model are as follows: the electrosurgical smoke evacuation pen of the utility model includes an adapter mechanism, a telescopic mechanism, a locking mechanism and a pen body rubber coating mechanism. The adapter mechanism connected at one end of the pen body rubber coating mechanism can rotate freely, has the advantages of good sealing and flexible rotation, and can effectively solve the external force caused by the connecting tube, which helps the doctor not to be disturbed by external forces during surgery; the telescopic mechanism connected at the other end of the pen body rubber coating mechanism can telescope and move in the main body inner cavity of the pen body rubber coating mechanism, which is convenient for the doctor to adjust the required length of the smoke evacuation pen during surgery according to the depth of the patient's lesion location, so as to achieve better surgical effect; the locking mechanism is sleeved outside the connection part of the telescopic mechanism and the pen body rubber coating mechanism to achieve locking or unlocking of the telescopic mechanism, effectively reducing the problem of axial deflection and sliding movement of the smoke evacuation pen in the locked state. The smoke pipe of the telescopic mechanism, the main body inner cavity of the pen body rubber coating mechanism and the inner cavity of the adapter mechanism form a through-connected smoke evacuation channel, so that there are no obstacles or corners in the internal channel of the smoke evacuation pen, and it has a strong smoke evacuation ability. The adapter adopts a double-hemispherical wrapping design, which can achieve free rotation on both sides whether it is connected to a smoke exhaust pen or an external smoking device, solving the problem of poor flexibility of the tail adapter when rotating in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the electrosurgical smoke evacuation pen when the telescopic mechanism of the utility model is in an extended state;

[0029] Figure 2 It is a structural schematic diagram of the electrosurgical smoke evacuation pen when the telescopic mechanism of the utility model is in a retracted state;

[0030] Figure 3 It is a three-dimensional assembly diagram of the electrosurgical smoke evacuation pen of the utility model;

[0031] Figure 4 It is a cross-sectional view of the electrosurgical smoke evacuation pen when the telescopic mechanism of the utility model is in an extended state;

[0032] Figure 5 It is a cross-sectional view of the electrosurgical smoke evacuation pen when the telescopic mechanism of the utility model is in a retracted state;

[0033] Fig. 6A It is a three-dimensional assembly diagram of the electrode assembly and the copper nozzle of the utility model;

[0034] Figure 6B It is a three-dimensional assembly diagram of the front part and the rear part of the smoke pipe of the smoke pipe of the utility model;

[0035] Figure 7 It is a schematic diagram of the structure of the hexagonal hole in the front part of the smoke pipe of the utility model;

[0036] Figure 8 It is a structural schematic diagram of the joint and the notch at the front part of the smoke pipe of the utility model;

[0037] Fig. 9 It is a schematic diagram of the structure of the electrode assembly, copper nozzle and smoke pipe after being assembled in the utility model;

[0038] Fig.10 It is a schematic diagram of the structure of the copper nozzle head and the hexagonal hole after being assembled in the utility model;

[0039] Fig.11A It is a structural schematic diagram of the main body inner cavity of the utility model;

[0040] Fig. 11B It is a schematic diagram of the structure of the smoke pipe of the utility model in the inner cavity of the main body;

[0041] Fig.12 It is a schematic structural diagram of the limiting end surface of the first stopper of the rear part of the smoke pipe of the utility model in the inner cavity of the main body;

[0042] Fig.13It is a schematic structural diagram of the limiting end surface of the second stopper of the rear part of the smoke pipe of the utility model in the inner cavity of the main body;

[0043] Fig.14 It is a three-dimensional assembly diagram of the circuit board component of the main hard shell of the utility model;

[0044] Fig.15 It is a schematic diagram of the structure after the conductive sheet of the main hard shell of the utility model is assembled and connected with the copper nozzle and the PCB board;

[0045] Fig.16 It is a structural schematic diagram of the head of the main hard shell of the utility model;

[0046] Fig.17 It is a structural schematic diagram of the switching mechanism of the utility model;

[0047] Fig.18A It is a three-dimensional assembly diagram of the lock buckle outside and the lock buckle inside of the lock buckle assembly of the utility model;

[0048] Fig.18B It is a schematic diagram of the structure of the lock buckle outer and lock buckle inner of the lock buckle assembly of the utility model after being assembled;

[0049] Fig.19 It is a structural schematic diagram of a circular ring on the beer glue of the electrode assembly of the utility model.

[0050] In the figure: adapter mechanism 1, adapter 11, rear hemisphere 11a, front hemisphere 11b, adapter lower cover 12, adapter upper cover 13, telescopic mechanism 2, electrode assembly 21, electrode rod 211, beer glue 212, copper mouth 22, flange structure 221, undercut structure 222, boss 223, smoke pipe 23, smoke pipe front part 231, smoke pipe rear part 232, hexagonal hole 233, upper reinforcing rib 234, lower reinforcing rib 234', joint 235, notch 236, convex block 237, locking Mechanism 3, outer lock buckle 31, inner lock buckle 32, guide buckle 33, extrusion flap 34, pen body rubber encapsulation mechanism 4, main body hard shell 41, head 411, guide notch 4111, threaded guide groove 4112, speaker hole 4113, hemispherical structure 412, main body soft support 42, circuit board assembly 43, conductive sheet 431, PCB board 432, metal spring 433, silicone sheet 434, button 435, cover 44, main body inner cavity 45, first stopper 451 and second stopper 452. DETAILED DESCRIPTION

[0051] In order to further understand the structure, features and other purposes of the present invention, the preferred embodiments are described in detail with reference to the accompanying drawings as follows. The embodiments described in the drawings are only used to illustrate the technical solution of the present invention and are not intended to limit the present invention.

[0052] In a first embodiment of the present invention, Figure 1 and Figure 2 As shown, an electrosurgical smoke evacuation pen comprises an adapter mechanism 1, a telescopic mechanism 2, a locking mechanism 3 and a pen body rubber-wrapped mechanism 4. The adapter mechanism 1 is connected to one end of the pen body rubber-wrapped mechanism 4, one end of the locking mechanism 3 is connected to the other end of the pen body rubber-wrapped mechanism 4, and the other end of the locking mechanism 3 is connected to one end of the telescopic mechanism 2.

[0053] like Figure 3 As shown, the pen body rubber-wrapped mechanism 4 includes a main body hard shell 41, a main body soft support 42, a circuit board assembly 43, a cover 44 and a main body inner cavity 45. A main body inner cavity 45 is provided through the bottom of the main body hard shell 41. The main body soft support 42 is coated on the bottom of the main body hard shell 41, the circuit board assembly 43 is fixedly attached to the upper surface of the main body hard shell 41, and the cover 44 is buckled on the main body hard shell 41 to form the pen body rubber-wrapped mechanism 4.

[0054] like Figure 3 As shown, the adapter mechanism 1 includes an adapter 11, an adapter lower cover 12 and an adapter upper cover 13. The adapter 11 is accommodated in the adapter lower cover 12, and the adapter upper cover 13 is snapped on the adapter lower cover 12 to form the adapter mechanism 1. The adapter mechanism 1 is installed at one end of the pen body rubber coating mechanism 4 so that the adapter mechanism 1 can rotate freely relative to the pen body rubber coating mechanism 4. The adapter mechanism 1 has the advantages of good sealing and flexible rotation. The adapter mechanism 1 is connected to one end of the pen body rubber coating mechanism 4 and can rotate freely, which effectively solves the external force caused by the connecting tube and helps doctors not to be disturbed by external forces during surgery.

[0055] like Figure 4 and Figure 5 As shown, the telescopic mechanism 2 includes an electrode assembly 21 and a copper nozzle 22 connected to the electrode assembly 21. A smoke pipe 23 is provided on the outer sleeve of the electrode assembly 21 and the copper nozzle 22. The smoke pipe 23 drives the electrode assembly 21 and the copper nozzle 22 to telescopically move in the main body cavity 45 of the pen body rubber coating mechanism 4. The telescopic mechanism 2 is sleeved in the pen body rubber coating mechanism 4 and is in sliding contact with the circuit board assembly 43 in the pen body rubber coating mechanism 4, so that when the circuit is connected and conductive to the electrode assembly 21, the electrode assembly 21 discharges and cuts and coagulates when it contacts human tissue. The telescopic mechanism 2 telescopically moves in the main body cavity 45 of the pen body rubber coating mechanism 4, which is convenient for doctors to adjust the required length of the smoke evacuation pen during surgery according to the depth of the patient's lesion location, so as to achieve better surgical results.

[0056] like Figure 4 and Figure 5As shown, the locking mechanism 3 is sleeved outside the connection portion of the telescopic mechanism 2 and the pen body rubber-wrapped mechanism 4, so that the telescopic mechanism 2 is locked when the locking mechanism 3 is rotated 90° clockwise, and the telescopic mechanism 2 is unlocked when the locking mechanism 3 is rotated 90° counterclockwise. The telescopic mechanism 2 is locked by the locking mechanism 3, which effectively reduces the problem of axial deflection and sliding movement of the smoke exhaust pen in the locked state.

[0057] In a second embodiment of the present invention, Fig. 6A As shown, the electrode assembly 21 in the telescopic mechanism 2 includes an electrode rod 211 and a rubber sheet 212 with hexagonal columns. The rubber sheet 212 is fixedly sleeved on the outside of the electrode rod 211 to form the electrode assembly 21. Among them, the electrode assembly 21 is formed by putting the electrode rod 211 material: SUS303 into a mold and then sleeve ABS material on the electrode rod 211 through an injection molding machine to form the rubber sheet 212. The rubber sheet 212 is made of ABS, and its function is to be assembled in the cigarette pipe 23 and to play a positioning role. The head of the electrode assembly 21 is set to a fishback knife shape and a non-stick coating is provided on its surface to make the surgical cutting smoother and prevent the residues from the surgical cutting from adhering to the knife surface. Preferably, as Fig.19 As shown, three rings 213 are sleeved on the beer glue 212 of the electrode assembly 21 to prevent slipping.

[0058] like Fig. 6A As shown, the head of the copper nozzle 22 is in the shape of a round tube. A flange structure 221 is provided at the front end of the head of the copper nozzle 22. Two symmetrical undercut structures 222 are provided in the middle section of the head of the copper nozzle 22. The tail of the copper nozzle 22 is a boss 223 bent upward. The copper nozzle 22 is made of phosphor copper with nickel plating on the surface, and its function is to conduct electricity.

[0059] like Figure 6B As shown, the smoke pipe 23 is cylindrical, including a smoke pipe front portion 231 and a smoke pipe rear portion 232. A hexagonal hole 233 is embedded in the smoke pipe front portion 231. Figure 7 As shown, the hexagonal hole 233 is a cavity with a hexagonal end face, and a step is provided in the inner ring of the front end of the hexagonal hole 233. The upper and lower parts of the hexagonal hole 233 are respectively provided with upper and lower symmetrical reinforcing ribs 234 and lower reinforcing ribs 234' to fix the hexagonal hole 233 in the front part 231 of the smoke pipe. The length of the lower reinforcing rib 234' is twice the length of the upper reinforcing rib 234. The smoke pipe 23 is divided into two parts, the front part 231 of the smoke pipe and the rear part 232 of the smoke pipe, so as to facilitate the installation of the electrode assembly 21 and the copper nozzle 22 in the smoke pipe 23. The hexagonal hole 233 is provided in the front part 231 of the smoke pipe to fix the electrode assembly 21 and the copper nozzle 22 head, and the hexagonal hole 233 is fixed in the smoke pipe 23 through the upper reinforcing rib 231 and the lower reinforcing rib 234'. The lower reinforcing rib 234' in the front part 231 of the smoke pipe is used to achieve a tight fit with the rear part 232 of the smoke pipe.

[0060] like Figure 6BAs shown, a connector 235 connected to the front part 231 of the smoke pipe is provided at the front end of the smoke pipe rear part 232. Figure 8 As shown, the lower part of the joint 235 is provided with a notch 236 matching the lower reinforcing rib 234', so that the lower reinforcing rib 234' is embedded in the notch 236 to achieve a tight fit between the rear part 232 of the smoke pipe and the front part 231 of the smoke pipe. A convex block 237 with a concave hole is provided on the upper surface of the tail end of the rear part 232 of the smoke pipe, and the shape of the concave hole matches the shape of the boss 223, so that the boss 223 extends from the concave hole of the rear part 232 of the smoke pipe and slides in the main body inner cavity 45 with the smoke pipe 23. The convex block 237 with a concave hole provided at the tail end of the rear part 232 of the smoke pipe has the function of positioning the boss 223 bent upward at the tail of the copper nozzle.

[0061] Preferably, the smoke pipe 23 is made of a transparent material PC, whose chemical name is polycarbonate, and its functions are to fix the electrode assembly 21 and the copper nozzle 22, to extend and retract in the main body cavity 45, and to exhaust smoke.

[0062] In a third embodiment of the present invention, Fig. 9 As shown, the electrode assembly 21 is sleeved on the front part 231 of the smoke pipe 23, and the hexagonal column of the beer glue 212 of the electrode assembly 21 is inserted into the hexagonal hole 233 of the front part 231 of the smoke pipe to achieve a tight fit connection between the electrode assembly 21 and the front part 231 of the smoke pipe 23. When the electrode assembly 21 is inserted into the head of the copper nozzle 22, because the inner diameter of the head of the copper nozzle 22 is smaller than the outer diameter of the electrode rod 211 of the electrode assembly 21 and has a certain elastic deformation, the head of the copper nozzle 22 can clamp the electrode rod 211 and a certain force is required to pull it out. Accordingly, the hexagonal column of the beer glue 212 of the electrode assembly 21 is inserted into the hexagonal hole 233 in the smoke pipe 23, so as to achieve the effect of positioning the electrode assembly 21.

[0063] like Fig.10 As shown, the head of the copper nozzle 22 is sleeved in the front part 231 of the smoke pipe 23, the flange structure 221 of the head of the copper nozzle 22 is clamped in the step of the hexagonal hole 233 to fix the head of the copper nozzle 22 in the front part 231 of the smoke pipe 23, and the two undercut structures 222 of the middle section of the head of the copper nozzle 22 are clamped in the end surface of the hexagonal hole 233 to fix the head of the copper nozzle 22 in the front part 231 of the smoke pipe 23. The rear part 232 of the smoke pipe is sleeved in the copper nozzle 22 and the lower reinforcing rib 234' is inserted into the notch 236 matching the lower reinforcing rib 234' at the lower part of the joint 235 to achieve a tight fit between the front part 231 of the smoke pipe and the rear part 232 of the smoke pipe.

[0064] When assembling the electrode assembly 21, the copper nozzle 22 and the cigarette pipe 23, the electrode assembly 21 is tightly connected with the hexagonal hole 233 in the front part 231 of the cigarette pipe through the hexagonal column of its beer glue 212, and the head of the copper nozzle 22 is tightly connected with the hexagonal hole 233 in the front part 231 of the cigarette pipe through the flange structure 221 and two symmetrical undercut structures 222, so that the electrode assembly 21 and the copper nozzle 22 can be stably fixed in the cigarette pipe 23, effectively reducing the shaking of the electrode assembly 21 and the copper nozzle 22 when in use. The tight fit between the rear part 232 of the cigarette pipe and the front part 231 of the cigarette pipe also reduces the shaking of the cigarette pipe 23 when in use.

[0065] In a fourth embodiment of the present invention, Fig.11A and Fig. 11B As shown, the main body inner cavity 45 of the pen body rubber-wrapped mechanism 4 is an integrated connected cavity composed of an upper inverted trapezoidal cavity and a lower cylindrical cavity, so as to just accommodate and limit the cigarette tube 23 and allow it to move forward and backward in the main body inner cavity 45 of the pen body rubber-wrapped mechanism 4 and prevent the cigarette tube 23 from rotating, and exhaust smoke through the connected cigarette tube 23 and the main body inner cavity 45. The upper inverted trapezoidal cavity of the main body inner cavity 45 limits the position of the cigarette tube 23, so as to prevent the cigarette tube 23 from rotating, and achieve the purpose of the cigarette tube 23 moving linearly in the main body inner cavity 45.

[0066] Depend on Figure 4 and Figure 5 It can be seen from the cross-sectional view that the smoke tube 23 and the main body inner cavity 45 form a through-type connected smoke exhaust channel, so that there are no obstacles or corners in the internal channel of the smoke exhaust pen, and the smoke exhaust pen has a strong smoke exhaust ability.

[0067] In a fifth embodiment of the present invention, Fig.12 As shown, a first stopper 451 is provided at the tail end of the main body cavity 45. When the cigarette tube 23 is shortened to the shortest in the main body cavity 45, the first stopper 451 of the main body cavity 45 abuts against the tail end of the protrusion 237 with the concave hole at the rear part 232 of the cigarette tube.

[0068] like Fig.13 As shown, a second stopper 452 is provided at the front end of the main body inner cavity 45. When the smoke tube 23 is extended to the maximum in the main body inner cavity 45, the second stopper 452 of the main body inner cavity 45 presses against the front end of the protrusion 237 with a concave hole at the rear portion 232 of the smoke tube, so as to ensure that the smoke tube 23 can move freely within the set stroke of the main body inner cavity 45. Fig.13 In the embodiment, the second stopper 452 may be the tail end surface of the locking mechanism 3 extending into the inner cavity 45 of the main body.

[0069] The first stopper 451 at the rear end of the main body inner cavity 45 and the second stopper 452 at the front end thereof together constitute the limiting end faces of the longest and shortest distances of the smoke tube 23 in the main body inner cavity 45, so as to limit the free telescopic movement of the smoke tube 23 in the main body inner cavity 45. The convex block 237 with the concave hole at the rear part 232 of the smoke tube also plays a role in limiting the position of the smoke tube 23 in the main body inner cavity 45, which can prevent the smoke tube 23 from rotating, so as to achieve the purpose of the smoke tube 23 moving linearly in the main body inner cavity 45.

[0070] In a sixth embodiment of the present invention, Fig.14 and Fig.15 As shown, the circuit board assembly 43 disposed on the main body hard shell 41 includes a conductive sheet 431 laid on the main body inner cavity 45. The conductive sheet 431 is covered with a cover plate, and a PCB board 432 is laid on the cover plate. Two metal springs 433 are provided on the PCB board 432. There are positioning holes and a plurality of wires between the two metal springs 433. The two metal springs 433 are respectively covered with a silicone sheet 434.

[0071] like Fig.14 and Fig.15 As shown, two positioning holes are provided on the cover 44, and two buttons 435 are respectively passed through the two positioning holes and fixed therein, so as to tightly fit the cover 44 with the main hard shell 41. When the button 435 is pressed, the button 435 presses the silicone sheet 434, and the silicone sheet 434 is subjected to force and transmitted to the metal spring sheet 433, so that the circuit between the PCB board 432 and the conductive sheet 431 is connected, thereby realizing power supply.

[0072] like Fig.15As shown, the boss 223 extending from the concave hole of the rear part 232 of the cigarette pipe is in sliding contact with the conductive sheet 431 arranged on the main body inner cavity 45, and the conductive sheet 431 is welded to the PCB board 432 through its conductive column. The conduction is controlled by the button 435, and the cigarette pipe 23 is freely telescopically moved to any position within the set stroke in the main body inner cavity 45, so that when the circuit is connected and conductive to the electrode assembly 21, the electrode assembly 21 discharges and cuts and coagulates when it contacts the human tissue. Since the conductive sheet 431 is laid on the main body inner cavity 45, the upwardly bent boss 223 at the tail of the copper nozzle 22 extends from the cigarette pipe 23, so that when the cigarette pipe 23 is telescopically moved in the main body inner cavity 45, the boss 223 maintains sliding contact with the conductive sheet 431, and the electrode rod 211, the copper nozzle 22, the conductive sheet 431, and the PCB board 432 of the electrode assembly 21 form a conductive circuit. When the circuit on the PCB board 432 is connected, it can be powered to the electrode assembly 21. In this embodiment, two buttons 435 are provided. By configuring the PCB board 432, when one of the buttons is pressed, the circuit board is connected to the electrode, so that the electrode discharges when in contact with human tissue to achieve a cutting function. When the other button is pressed, the circuit board is connected to the electrode, so that the electrode discharges when in contact with human tissue to achieve a coagulation function.

[0073] In a seventh embodiment of the present invention, Fig.16 As shown, one end of the main body hard shell 41 is integrally connected with a hemispherical structure 412 to connect with the adapter 11 of the adapter mechanism 1. The other end of the main body hard shell 41 of the pen body rubber encapsulation mechanism 4 is integrally connected with a head 411 with a thread to connect with the locking mechanism 3. The main body hard shell 41 can adopt a streamlined appearance as a whole, which effectively increases the doctor's grip and relieves fatigue.

[0074] like Fig.16 As shown, four circumferentially distributed guide notches 4111 are provided on the outer ring of the port of the head 411 of the pen body rubber-wrapped mechanism 4, four circumferentially distributed threaded guide grooves 4112 are provided on the head of the pen body rubber-wrapped mechanism 4, and a trumpet hole 4113 with a distance of 4 mm outward from the boss is provided on the port of the head 411, so that when the locking mechanism 3 is assembled, the guide buckle 33 of the locking mechanism 3 is aligned with the guide notch 4111, and the guide buckle 33 is forcibly pushed into the threaded guide groove 4112 of the head 411 along the guide notch 4111 by utilizing the characteristic that plastic has a certain elasticity.

[0075] After the locking mechanism 3 is assembled, when the locking mechanism 3 is rotated clockwise, the guide buckle 33 of the locking mechanism 3 is pushed inward along the threaded guide groove 4112, and when the squeezing flap 34 of the locking mechanism 3 is squeezed by the inner wall of the trumpet hole 4113, the squeezing flap 34 shrinks inward to press the outer wall of the smoke tube 23, and the squeezing friction force is used to achieve the locking effect; when the locking mechanism 3 is rotated counterclockwise, the guide buckle 33 of the locking mechanism 3 is withdrawn outward along the threaded guide groove 4112, and the squeezing force of the inner wall of the trumpet hole 4113 gradually decreases to zero, and the squeezing flap 34 returns to a free state. At this time, the smoke tube 23 is not squeezed by external force in the inner cavity of the main body, so that the smoke tube 23 is unlocked and the smoke tube 23 can be pushed and pulled to achieve free extension and retraction of the smoke tube 23. In this way, after the locking mechanism 3 is rotated counterclockwise, the smoke tube 23 can be extended and retracted to adjust the length of the smoke tube 23 required by the smoke exhaust pen during surgery according to the depth of the patient's lesion position, so as to achieve a better surgical effect.

[0076] In an eighth embodiment of the present invention, Fig.17 As shown, the adapter 11 of the adapter mechanism 1 is an integrally formed dumbbell-shaped double-hemispherical structure having a front hemisphere 11b and a rear hemisphere 11a.

[0077] The adapter upper cover 13 has a first curved surface structure covering the upper half of the front hemisphere 11b of the adapter 11, and the adapter lower cover 12 has a second curved surface structure covering the lower half of the front hemisphere 11b of the adapter 11. The first curved surface structure of the adapter upper cover 13 is snap-fitted with the second curved surface structure of the adapter lower cover 12 to form a hemispherical structure that matches the front hemisphere 11b of the adapter 11.

[0078] The tail of the face cover 44 has a third curved surface structure covering the upper half of the rear hemisphere 11a of the adapter 11, and the tail of the main hard shell 41 has a fourth curved surface structure covering the lower half of the rear hemisphere 11a of the adapter 11. The third curved surface structure at the tail of the face cover 44 and the fourth curved surface structure at the tail of the main hard shell 41 are snap-fitted and connected to form a hemispherical structure that matches the rear hemisphere 11a of the adapter 11.

[0079] The adapter mechanism 1 adopts a front and rear double hemisphere wrapping design, which has the advantages of good sealing and flexible rotation. It can effectively solve the external force caused by the connecting tube and help doctors not to be disturbed by external forces during surgery.

[0080] In the ninth embodiment of the present invention, the first curved surface structure of the adapter upper cover 13 and the second curved surface structure of the adapter lower cover 12 are integrally formed, and the third curved surface structure of the rear part of the surface cover 44 and the fourth curved surface structure of the rear part of the main hard shell 41 are integrally formed, which has a good sealing effect, so that the exhaust smoke of the smoke pipe will not escape, thereby achieving a strong smoke exhaust capacity effect.

[0081] In a tenth embodiment of the present invention, Fig.18A and 18B As shown, the locking mechanism 3 includes a lock buckle outer 31 and a lock buckle inner 32. Four guide buckles 33 are arranged on the port ring inside the lock buckle inner 32, and a head with a threaded guide groove is arranged at the end of the pen body rubber coating mechanism 4, and the guide buckle 33 plays a role of rotational guidance in the threaded guide groove. Four elastic extrusion flaps 34 are arranged inside the lock buckle outer 31, and the four elastic extrusion flaps 34 form an inner ring. The lock buckle inner 32 is sleeved between the outer shell of the lock buckle outer 31 and the inner ring to form the locking mechanism 3. When the head with the threaded groove of the pen body rubber coating mechanism 4 is sleeved in the locking mechanism 3, the locking mechanism 3 is rotated 90° clockwise to put the locking mechanism 3 in a locked state, and the extrusion flaps 34 are forced to shrink inwards, thereby squeezing the cigarette tube 23 assembled therein to achieve a locking effect.

[0082] As the guide buckle 33 of the locking mechanism 3 is pushed inwardly into the threaded guide groove of the head portion of the end portion of the rubber-wrapped mechanism 4 of the pen body, the squeezing flap 34 gradually squeezes the cigarette tube 23 assembled therein to achieve a locking effect. As the guide buckle 33 is withdrawn outwardly from the threaded guide groove, the squeezing flap 34 gradually loosens the cigarette tube 23 to achieve an unlocking effect. This connection method is beneficial to improving the stability of the locking mechanism 3 when locking and fixing the cigarette tube 23, thereby making the telescopic positioning operation of the telescopic mechanism 2 more convenient.

[0083] In order to improve the flexibility of the entire device during operation, an anti-slip surface with a plurality of raised anti-slip strips can be provided on the outer surface of the lock buckle 31 of the locking mechanism 3, thereby achieving a better anti-slip effect.

[0084] It should be stated that the content and specific implementation methods of the above utility model are intended to demonstrate the practical application of the technical solution provided by the utility model, and should not be interpreted as limiting the scope of protection of the utility model. Those skilled in the art can make various modifications, equivalent substitutions or improvements within the spirit and principle of the utility model. The scope of protection of the utility model shall be subject to the attached claims.

Claims

1. An electrosurgical smoke evacuation pen, characterized in that: The invention comprises a transfer mechanism (1), a telescopic mechanism (2), a locking mechanism (3) and a pen body rubber-wrapped mechanism (4); the transfer mechanism (1) is connected to one end of the pen body rubber-wrapped mechanism (4), one end of the locking mechanism (3) is connected to the other end of the pen body rubber-wrapped mechanism (4), and the other end of the locking mechanism (3) is connected to one end of the telescopic mechanism (2); wherein: The pen body rubber-wrapped mechanism (4) comprises a main body hard shell (41), a main body soft support (42), a circuit board assembly (43), a cover (44) and a main body inner cavity (45); a main body inner cavity (45) is provided through the bottom of the main body hard shell (41), the main body soft support (42) is covered on the bottom of the main body hard shell (41), the circuit board assembly (43) is fixedly attached to the upper surface of the main body hard shell (41), and the cover (44) is buckled on the main body hard shell (41) to form the pen body rubber-wrapped mechanism (4); The adapter mechanism (1) comprises an adapter (11), an adapter lower cover (12) and an adapter upper cover (13); the adapter (11) is accommodated in the adapter lower cover (12), and the adapter upper cover (13) is buckled on the adapter lower cover (12) to form the adapter mechanism (1); the adapter mechanism (1) is installed at one end of the pen body rubber-wrapped mechanism (4) so ​​that the adapter mechanism (1) can rotate freely relative to the pen body rubber-wrapped mechanism (4); The telescopic mechanism (2) comprises an electrode assembly (21) and a copper nozzle (22) connected to the electrode assembly (21); a smoke pipe (23) is provided on the outer sleeve of the electrode assembly (21) and the copper nozzle (22); the smoke pipe (23) drives the electrode assembly (21) and the copper nozzle (22) to telescopically move in the main body cavity (45) of the pen body rubber-coated mechanism (4); the telescopic mechanism (2) is sleeved in the pen body rubber-coated mechanism (4) and is in sliding contact with the circuit board assembly (43) in the pen body rubber-coated mechanism (4), so that when the circuit is connected and conductive to the electrode assembly (21), the electrode assembly (21) discharges and cuts or coagulates when in contact with human tissue; The locking mechanism (3) is sleeved outside the connection portion between the telescopic mechanism (2) and the pen body rubber coating mechanism (4) so ​​as to lock the telescopic mechanism (2) when the locking mechanism (3) is rotated 90° clockwise, and unlock the telescopic mechanism (2) when the locking mechanism (3) is rotated 90° counterclockwise.

2. The electrosurgical smoke evacuation pencil according to claim 1, characterized in that: The electrode assembly (21) in the telescopic mechanism (2) comprises an electrode rod (211) and a beer glue (212) with a hexagonal column, and the beer glue (212) is fixedly sleeved outside the electrode rod (211) to form the electrode assembly (21); The head of the copper nozzle (22) is in the shape of a circular tube, a flange structure (221) is provided at the front end of the head of the copper nozzle (22), and two symmetrical inverted structures (222) are provided at the middle section of the head of the copper nozzle (22); the tail of the copper nozzle (22) is a boss (223) bent upward; The smoke pipe (23) is cylindrical and includes a smoke pipe front portion (231) and a smoke pipe rear portion (232); wherein: A hexagonal hole (233) is embedded in the front part (231) of the smoke pipe. The hexagonal hole (233) is a cavity with a hexagonal end face. A step is arranged on the inner ring of the front end of the hexagonal hole (233). The upper and lower parts of the hexagonal hole (233) are respectively provided with upper reinforcing ribs (234) and lower reinforcing ribs (234') which are symmetrical up and down so as to fix the hexagonal hole (233) in the front part (231) of the smoke pipe. The length of the lower reinforcing rib (234') is twice the length of the upper reinforcing rib (234). A connector (235) connected to the front part (231) of the smoke pipe is provided at the front end of the smoke pipe rear part (232), and a notch (236) matching the lower reinforcing rib (234') is provided at the lower part of the connector (235) so that the lower reinforcing rib (234') can be embedded in the notch (236) to achieve a tight fit between the smoke pipe rear part (232) and the smoke pipe front part (231); a convex block (237) with a concave hole is provided on the upper surface of the tail end of the smoke pipe rear part (232), and the shape of the concave hole matches the shape of the boss (223), so that the boss (223) extends out of the concave hole of the smoke pipe rear part (232) and slides in the main body inner cavity (45) along with the smoke pipe (23).

3. The electrosurgical smoke evacuation pencil according to claim 2, characterized in that: The electrode assembly (21) is sleeved on the front part (231) of the smoke pipe (23), and the hexagonal column of the beer glue (212) of the electrode assembly (21) is inserted into the hexagonal hole (233) of the front part (231) of the smoke pipe to achieve a tight fit connection between the electrode assembly (21) and the front part (231) of the smoke pipe (23); the head of the copper nozzle (22) is sleeved in the front part (231) of the smoke pipe (23), and the flange structure (221) of the head of the copper nozzle (22) is clamped in the step of the hexagonal hole (233) to fix the head of the copper nozzle (22). In the front part (231) of the smoke pipe (23), two undercut structures (222) in the middle section of the head of the copper nozzle (22) are clamped on the end surface of the hexagonal hole (233) so that the head of the copper nozzle (22) is fixed to the front part (231) of the smoke pipe (23); the rear part (232) of the smoke pipe is sleeved on the copper nozzle (22) and the lower reinforcing rib (234') is inserted into the notch (236) matched with the lower reinforcing rib (234') provided at the lower part of the connecting head (235) so as to achieve a tight fit between the front part (231) of the smoke pipe and the rear part (232) of the smoke pipe.

4. The electrosurgical smoke evacuation pencil according to claim 1, characterized in that: The main body inner cavity (45) of the pen body rubber-coated mechanism (4) is an integrated connected cavity composed of an upper inverted trapezoidal cavity and a lower cylindrical cavity, so as to just accommodate and limit the smoke pipe (23) and allow the smoke pipe (23) to move forward and backward in the main body inner cavity (45) of the pen body rubber-coated mechanism (4) while preventing the smoke pipe (23) from rotating, and exhaust smoke through the connected smoke pipe (23) and the main body inner cavity (45).

5. The electrosurgical smoke evacuation pencil according to claim 1 or 4, characterized in that: A first stopper (451) is provided at the rear end of the main body inner cavity (45). When the smoke tube (23) is shortened to the shortest in the main body inner cavity (45), the first stopper (451) of the main body inner cavity (45) presses against the rear end of the convex block (237) with a concave hole at the rear part (232) of the smoke tube; a second stopper (452) is provided at the front end of the main body inner cavity (45). When the smoke tube (23) is extended to the longest in the main body inner cavity (45), the second stopper (452) of the main body inner cavity (45) presses against the front end of the convex block (237) with a concave hole at the rear part (232) of the smoke tube, so as to ensure that the smoke tube (23) can freely extend and retract within a set stroke of the main body inner cavity (45).

6. The electrosurgical smoke evacuation pencil according to claim 2, characterized in that: A circuit board assembly (43) is arranged on the main body hard shell (41), comprising a conductive sheet (431) laid on the main body inner cavity (45), a cover plate covering the conductive sheet (431), a PCB board (432) laid on the cover plate, two metal springs (433), a positioning hole between the two metal springs (433) and a plurality of wires are arranged on the PCB board (432), and the two metal springs (433) are respectively covered with a silicone sheet (434); The cover (44) is provided with two positioning holes, and two buttons (435) are respectively passed through the two positioning holes and fixed therein, so that the cover (44) and the main hard shell (41) are tightly matched together, so that when the button (435) is pressed, the button (435) presses the silicone sheet (434), and the silicone sheet (434) is subjected to force and transmitted to the metal spring sheet (433) to connect the circuit between the PCB board (432) and the conductive sheet (431), thereby realizing power supply; The boss (223) extending from the recessed hole at the rear of the cigarette pipe (232) is in sliding contact with a conductive sheet (431) arranged on the inner cavity (45) of the main body. The conductive sheet (431) is connected to the PCB board (432) through its conductive column and is controlled to be turned on by a button (435). The cigarette pipe (23) can be freely extended and moved in the inner cavity (45) of the main body to any position within a set stroke, so that when the line is connected and conductive to the electrode assembly (21), the electrode assembly (21) discharges and cuts or coagulates when in contact with human tissue.

7. The electrosurgical smoke evacuation pencil according to claim 1, characterized in that: One end of the main body hard shell (41) is integrally connected with a hemispherical structure (412) to be connected to the adapter (11) of the adapter mechanism (1), and the other end of the main body hard shell (41) of the pen body rubber encapsulation mechanism (4) is integrally connected with a head (411) with a thread to be connected to the locking mechanism (3); The outer ring of the port of the head (411) of the pen body rubber encapsulation mechanism (4) is provided with four circumferentially distributed guide notches (4111), the head of the pen body rubber encapsulation mechanism (4) is provided with four circumferentially distributed thread guide grooves (4112), and the port of the head (411) is provided with a trumpet hole (4113) with a distance of 4 mm outward from the boss, so that when the locking mechanism (3) is assembled, the guide buckle (33) of the locking mechanism (3) is aligned with the guide notch (4111), so that the guide buckle (33) is forcibly pushed into the thread guide groove (4112) of the head (411) along the guide notch (4111).

8. The electrosurgical smoke evacuation pencil according to claim 1, characterized in that: The adapter (11) of the adapter mechanism (1) is an integrally formed dumbbell-shaped double hemisphere structure having a front hemisphere (11b) and a rear hemisphere (11a); wherein: the adapter upper cover (13) has a first curved surface structure covering the upper half of the front hemisphere (11b) of the adapter (11); the adapter lower cover (12) has a second curved surface structure covering the lower half of the front hemisphere (11b) of the adapter (11); the first curved surface structure of the adapter upper cover (13) and the second curved surface structure of the adapter lower cover (12) are buckled and connected to form a hemispherical structure that matches the front hemisphere (11b) of the adapter (11); The rear portion of the face cover (44) has a third curved surface structure covering the upper half of the rear hemisphere (11a) of the adapter (11), and the rear portion of the main hard shell (41) has a fourth curved surface structure covering the lower half of the rear hemisphere (11a) of the adapter (11). The third curved surface structure at the rear portion of the face cover (44) and the fourth curved surface structure at the rear portion of the main hard shell (41) are snap-fitted and connected to form a hemispherical structure that matches the rear hemisphere (11a) of the adapter (11).

9. The electrosurgical smoke evacuation pencil according to claim 8, characterized in that: The first curved surface structure of the adapter upper cover (13) and the second curved surface structure of the adapter lower cover (12) are integrally formed, and the third curved surface structure at the rear of the surface cover (44) and the fourth curved surface structure at the rear of the main hard shell (41) are integrally formed.

10. The electrosurgical smoke evacuation pencil according to claim 1, characterized in that: The locking mechanism (3) comprises an outer lock (31) and an inner lock (32); wherein: Four guide buckles (33) are arranged on the port ring inside the lock buckle (32), and a head with a thread guide groove is arranged at the end of the pen body rubber coating mechanism (4), and the guide buckle (33) plays a role of rotational guidance in the thread guide groove; Four elastic extrusion flaps (34) are arranged inside the lock buckle outer (31), and the four elastic extrusion flaps (34) form an inner ring. A lock buckle inner (32) is sleeved between the outer shell of the lock buckle outer (31) and the inner ring to form a locking mechanism (3), so that when the head with a thread groove of the pen body rubber encapsulation mechanism (4) is sleeved in the locking mechanism (3), the locking mechanism (3) is rotated 90 degrees clockwise to put the locking mechanism (3) in a locked state, and the extrusion flaps (34) are forced to contract inwardly, thereby squeezing the cigarette tube (23) assembled therein to achieve a locking effect.

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