A micro-sized anti-adhesion electrocautery pen

Abstract

The present application relates to the technical field of electric coagulation pen, disclose a kind of miniaturized anti-adhesion electric coagulation pen, including pen shell, the front end of pen shell is slidably provided with base, and electric heating wire is provided on base, the front end of the inner cavity of pen shell is provided with limit ring one and limit ring two, extrusion ring is slidably provided between limit ring one and limit ring two, disc spring is provided between limit ring one and limit ring two, disc spring is in pre-compression state with limit ring one and extrusion ring being abutted, the radial length of extrusion ring is less than the interval of limit ring one and limit ring two, the rear end of base is provided with boss one, and the rear side of boss one is provided with main extrusion rod, and oblique slot is opened in main extrusion rod, button is provided on pen shell, and the bottom of button is connected with inclined rod, and inclined rod and oblique slot are in contact, and sliding shell is fixedly provided in pen shell, and sliding shell is sleeved on the outer periphery of main extrusion rod.The electric coagulation pen is separated from eschar by high-speed miniaturization, and the risk of operation is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric coagulation pen, and particularly to a miniaturized anti-adhesion electric coagulation pen. BACKGROUND

[0002] The electric coagulation pen is a medical surgical instrument, and the core is realized by the heating of the pen end electric heating wire. It usually contains a pen shell, a driving mechanism and an electric heating wire, and the electric heating wire is pressed to extend to contact the tissue, and the heat is used to coagulate blood. Some are equipped with anti-adhesion structure, which can actively retract and separate the eschar after hemostasis, improving the safety and accuracy of the operation.

[0003] In the patent with the publication number CN106236247A, a telescopic knife pen is disclosed, which includes a pen body cover, a knife pen head, a knife pen guide core connected to the end of the knife pen head, a telescopic sleeve sleeved on the knife pen guide core and capable of moving linearly along the knife pen guide core, a knife pen sleeve connected with the telescopic sleeve and capable of shielding the knife pen head, and a circuit assembly packaged in the pen body cover. The electronic wire of the knife pen wire is welded on the circuit assembly, and the air pipe of the knife pen wire is installed in the tail opening of the knife pen guide core.

[0004] The prior art has the following defects:

[0005] The existing electric coagulation pen relies on the doctor to manually lift the hand to separate the electric heating wire from the eschar after hemostasis in the operation, lacks an active retraction separation mechanism, and is easy to cause tissue avulsion and delayed bleeding risk due to delayed separation or improper force control. Although some products have a retraction structure, the ordinary spring is used to provide power, the retraction response speed is slow, and there is a lack of precise force transmission and reset mechanism, which is easy to cause separation delay. At the same time, the extrusion rod sliding guide structure of the existing product is not reasonable in design, and is easy to jam or swing too much during sliding, which is difficult to realize precise operation in a narrow operation space. In addition, the matching precision of the parts is insufficient, the power transmission efficiency of the extrusion rod and the base is low, and the sliding contact part has large friction loss, which not only affects the reliability of the hemostasis operation, but also shortens the service life of the equipment, and it is difficult to meet the use demand of precise operation. SUMMARY

[0006] In view of the above problems of the prior art, a miniaturized anti-adhesion electric coagulation pen is proposed.

[0007] The present application provides a miniaturized anti-adhesion electric coagulation pen, which aims to actively separate the electric heating wire from the eschar and reduce the risk of operation.

[0008] The technical solution of the present invention is as follows: a miniature anti-adhesion electrocoating pen, comprising a pen shell, a base slidably disposed at the front end of the pen shell, a heating wire disposed on the base, a limiting ring one and a limiting ring two disposed at the front end of the inner cavity of the pen shell, a compression ring slidably disposed between the limiting ring one and the limiting ring two, a disc spring disposed between the limiting ring one and the limiting ring two, the disc spring abutting against the limiting ring one and the compression ring and the disc spring being in a pre-compressed state, the radial length of the compression ring being less than the distance between the limiting ring one and the limiting ring two, a boss one disposed at the rear end of the base, a main extrusion rod disposed on the rear side of the boss one, a slanted groove being opened on the main extrusion rod, a button disposed on the pen shell, a slanted rod connected to the bottom of the button, the slanted rod contacting the slanted groove, a sliding shell fixedly disposed inside the pen shell, the sliding shell being sleeved on the outer periphery of the main extrusion rod.

[0009] Furthermore, a second boss is provided at the rear end of the main extrusion rod, and a return spring is sleeved on the main extrusion rod, with the return spring abutting against the sliding shell and the second boss.

[0010] Furthermore, a partition plate is provided on the rear side of the second boss, and a limit rod is provided at the center of the partition plate, which abuts against the second boss.

[0011] Furthermore, the inner diameter of the sliding shell gradually decreases from front to back, a secondary extrusion rod is provided on the front side of the main extrusion rod, an extrusion hole is provided at the rear end of the base, the extrusion hole and the secondary extrusion rod are matched, and a centering piece is sleeved on the outer periphery of the front end of the main extrusion rod.

[0012] Furthermore, the centering component includes a hairspring, the outer side of which is fixed to the pen housing, and the inner side is connected to an inner ring. Ball protrusions are evenly spaced along the inner side of the inner ring. Multiple ball protrusions contact the main extrusion rod.

[0013] Furthermore, a third limiting ring is provided at the front end of the base, and the third limiting ring is in contact with the left side of the first limiting ring.

[0014] Furthermore, the difference between the radial length of the extrusion ring and the distance between the first limiting ring and the second limiting ring does not exceed 0.3 mm.

[0015] Furthermore, a third boss is provided on the rear side of the first boss, and a weak spring abuts between the third boss and the second limiting ring.

[0016] Furthermore, a battery is provided at the rear end of the inner cavity of the pen casing, and the battery is coupled to the heating wire.

[0017] The beneficial effects of this invention are:

[0018] 1. Achieve active separation of heating wire from eschar, reducing surgical risks: By pre-compressing and storing elastic potential energy through disc spring, it can be quickly released after hemostasis to push the base to retract a small distance, so that the heating wire is actively and physically separated from the eschar, reducing the risk of tissue tearing and delayed bleeding, and improving surgical safety.

[0019] 2. Quick retraction response, reducing operation delay: With the quick reset function of the centering piece, after the doctor releases the button, a one-time squeeze of the lever can quickly coincide with the squeeze hole axis and fall into the hole, making the axial thrust of the inclined rod disappear immediately, and the disc spring can drive the retraction immediately, avoiding the separation delay caused by the doctor's lifting action. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a perspective view of the micro-sized anti-adhesion electrocoagulation pen of the present application;

[0021] Figure 2 is a perspective view of the internal structure of the micro-sized anti-adhesion electrocoagulation pen of the present application;

[0022] Figure 3 is a front view of the micro-sized anti-adhesion electrocoagulation pen of the present application;

[0023] Figure 4 is a perspective view of the micro-sized anti-adhesion electrocoagulation pen of the present application Figure 3 is a cross-sectional view at A-A;

[0024] Figure 5 is a perspective view of the micro-sized anti-adhesion electrocoagulation pen of the present application

[0025] Figure 6 is a front view of the centering piece in the micro-sized anti-adhesion electrocoagulation pen of the present application.

[0026] In the drawings:

[0027] 1. pen shell; 2. base; 3. limit ring one; 4. limit ring two; 5. squeeze ring; 6. disc spring; 7. boss one; 8. main squeeze lever; 9. inclined slot; 10. button; 11. inclined rod; 12. sliding shell; 13. boss two; 14. reset spring; 15. partition plate; 16. limit rod; 17. secondary squeeze lever; 18. squeeze hole; 19. centering piece; 20. hair spring; 21. inner ring; 22. ball convex; 23. limit ring three; 24. boss three; 25. weak force spring; 26. battery; 27. heating wire. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings.

[0029] Embodiment, refer to Figures 1-6For the embodiment of the present application, a micro anti-adhesion electrocoagulation pen is provided, comprising a pen shell 1, a base 2 is slidably arranged at the front end of the pen shell 1, an electric heating wire 27 is arranged on the base 2, a limiting ring one 3 and a limiting ring two 4 are arranged at the front end of the inner cavity of the pen shell 1, an extrusion ring 5 is slidably arranged between the limiting ring one 3 and the limiting ring two 4, a disc spring 6 is arranged between the limiting ring one 3 and the limiting ring two 4, the disc spring 6 abuts against the limiting ring one 3 and the extrusion ring 5 and is in a pre-compressed state, the radial length of the extrusion ring 5 is smaller than the distance between the limiting ring one 3 and the limiting ring two 4, a boss one 7 is arranged at the rear end of the base 2, a main extrusion rod 8 is arranged at the rear side of the boss one 7, an inclined slot 9 is formed on the main extrusion rod 8, a button 10 is arranged on the pen shell 1, an inclined rod 11 is connected to the bottom of the button 10, the inclined rod 11 is in contact with the inclined slot 9, a sliding shell 12 is fixedly arranged in the pen shell 1, and the sliding shell 12 is sleeved on the outer periphery of the main extrusion rod 8. A boss two 13 is arranged at the rear end of the main extrusion rod 8, a return spring 14 is sleeved on the main extrusion rod 8, and the return spring 14 abuts against the sliding shell 12 and the boss two 13.

[0030] Specifically, the pen shell 1 is integrally injection molded by using a lightweight and excellent insulating high polymer material. The front end of the pen shell 1 is a tapered structure, and the inner diameter thereof gradually decreases along the front end direction, which is suitable for the sliding stroke of the base 2 and makes the whole device more ergonomic, thereby facilitating operation in a narrow surgical space. The base 2 is made of a high-temperature-resistant ceramic material, and an annular clamping groove is formed on the front end surface thereof. The electric heating wire 27 is fixed on the base 2 through the clamping groove, and the two ends of the electric heating wire 27 are connected to the power supply circuit in the pen shell 1 through the conductive terminals embedded in the base 2.

[0031] The limiting ring one 3 and the limiting ring two 4 at the front end of the inner cavity of the pen shell 1 are integrally formed with the pen shell 1, and are coaxially arranged, and the inner diameter of the limiting ring one 3 and the limiting ring two 4 is suitable for the outer diameter of the extrusion ring 5, so that the extrusion ring 5 can stably slide along the axial direction without radial deviation. The edge of the through hole formed in the middle of the sealing plate of the extrusion ring 5 is chamfered, and the inner diameter of the through hole is in clearance fit with the outer diameter of the base 2, which can ensure that the base 2 passes through smoothly and can form radial limitation on the base 2 through the inner wall of the through hole when the extrusion ring 5 is stressed. The disc spring 6 adopts a multi-layer stacked structure, and the whole disc spring 6 after stacking is in the shape of a bowl, and the two ends thereof are tightly attached to the end surface of the limiting ring one 3 and the end surface of the sealing plate of the extrusion ring 5, respectively. The pre-compressed state is realized by axial positioning during assembly, and the disc spring 6 always applies a pre-tightening force to the extrusion ring 5 after assembly is completed.

[0032] The boss 7 at the rear end of the base 2 is in one-piece structure with the base 2, the outer diameter of the boss 7 is larger than that of the base 2, and the front end surface of the boss 7 is parallel to the rear end surface of the sealing plate of the extrusion ring 5, so that surface contact transmission can be realized when the two are in contact, and local stress concentration leading to structural damage is avoided. The main extrusion rod 8 is in extrusion transmission with the boss 7. The inclined groove 9 on the main extrusion rod 8 is arranged axially along the rod body, and the inclined surface of the inclined groove 9 is polished to reduce the friction resistance when it is in contact with the inclined rod 11.

[0033] The temperature control module is further arranged in the pen shell 1, and is connected with the electric heating wire 27 through wires, so that the temperature of the electric heating wire 27 can be monitored and adjusted in real time, the excessive carbonization of tissues caused by the excessively high temperature of the electric heating wire 27 is avoided, and the hemostatic effect is prevented from being affected by the excessively low temperature.

[0034] In actual surgical operation, when the doctor holds the pen shell 1 and presses the button 10, the button 10 drives the inclined rod 11 to move downward, the lower end of the inclined rod 11 is in contact with the inclined surface of the inclined groove 9 of the main extrusion rod 8 and generates an axial force, and the main extrusion rod 8 is pushed to slide forward along the sliding shell 12. The main extrusion rod 8 drives the base 2 to move forward through the boss 7, and the electric heating wire 27 at the front end of the base 2 is stretched out of the front end of the pen shell 1. When the base 2 is stretched to the preset length, the front end surface of the boss 7 is in contact with the rear end surface of the sealing plate at the rear side of the extrusion ring 5, the button 10 is continuously pressed, the main extrusion rod 8 pushes the extrusion ring 5 to slide forward, and the disc spring 6 is further compressed and stores elastic potential energy under the action of the extrusion ring 5. At this time, the electric heating wire 27 is powered to generate heat to realize hemostasis, and after the hemostasis is completed, the doctor releases the button 10, the reset spring 14 drives the boss 24, the axial pushing force of the inclined rod 11 on the main extrusion rod 8 disappears, the disc spring 6 releases the stored elastic potential energy, pushes the extrusion ring 5 to slide backward, and the extrusion ring 5 drives the main extrusion rod 8 and the base 2 to quickly retract a small distance backward through the boss 7, so that the electric heating wire 27 is quickly separated from the eschar.

[0035] In order to adapt to the surgical needs of different parts, the electrocoagulation pen can also be equipped with different specifications of the base 2 and the electric heating wire 27. Different specifications of the base 2 are connected with the main extrusion rod 8 by replacing the interface, and the quick-release structure is adopted, so that the replacement can be completed without tools. In addition, the temperature adjustment button 10 is further arranged on the pen shell 1, the doctor can set the working temperature of the electric heating wire 27 according to the tissue characteristics of the surgical site through the temperature adjustment button 10, the temperature value is displayed through the indicator light on the pen shell 1, and the doctor can observe in real time.

[0036] Referring to Figure 2 The rear side of the boss 13 is provided with a partition plate 15, the center of the partition plate 15 is provided with a limiting rod 16, and the limiting rod 16 is in abutment with the boss 13. The pen shell 1 is divided into multiple cavities through the partition plate 15, and the limiting rod 16 is used to limit the rear moving distance of the main extrusion rod 8.

[0037] Referring toFigure 4 The inner diameter of the sliding shell 12 gradually decreases from front to back, the front side of the main extrusion rod 8 is provided with a secondary extrusion rod 17, the rear end of the base 2 is provided with an extrusion hole 18, the extrusion hole 18 and the secondary extrusion rod 17 are matched, and the front end of the main extrusion rod 8 is externally sleeved with a centering piece 19.

[0038] Specifically, the sliding shell 12 is precisely machined from metal material, the inner wall adopts a gradually changing structure design, the inner diameter presents a smooth transition decreasing trend from front to back, and the inner wall surface is mirror-polished to reduce the frictional resistance when the main extrusion rod 8 slides. This matching relationship enables the main extrusion rod 8 to realize stable axial sliding in the sliding shell 12 and swing around its own axis by a certain angle under the action of radial component force, and no jamming phenomenon occurs in the swinging process.

[0039] The front side end face of the main extrusion rod 8 is provided with a mounting hole, and the secondary extrusion rod 17 is connected with the main extrusion rod 8 through the mounting hole. The front end of the secondary extrusion rod 17 is a conical guide structure, which is convenient for being quickly inserted into the extrusion hole 18 when the axes coincide. The extrusion hole 18 at the rear end of the base 2 is a blind hole structure, the hole wall is smooth, the inner diameter thereof is accurately matched with the outer diameter of the secondary extrusion rod 17, and a cooperation relationship with a small gap is formed, only when the axes coincide, the secondary extrusion rod 17 can be smoothly inserted into the extrusion hole 18 and transmit the axial thrust.

[0040] During the operation process, the doctor holds the pen shell 1 and applies pressure to the button 10, the button 10 drives the inclined rod 11 to move downward, and after the lower end of the inclined rod 11 contacts the inclined surface of the inclined groove 9, axial and radial component forces are generated at the same time. The axial component force pushes the main extrusion rod 8 to slide forward along the sliding shell 12, and the radial component force makes the main extrusion rod 8 slightly swing against the elastic force of the centering piece 19, and the axis of the secondary extrusion rod 17 and the extrusion hole 18 is slightly deviated, the secondary extrusion rod 17 pushes the base 2 to move forward through the front end face, the base 2 drives the electric heating wire 27 to extend out of the front end of the pen shell 1 and is electrified to heat, and the hemostasis operation is realized. In this process, the main extrusion rod 8 slides forward to drive the boss 7 to contact the extrusion ring 5, and further pressing the button 10 pushes the extrusion ring 5 to compress the disc spring 6, so that the disc spring 6 stores elastic potential energy.

[0041] When the hemostatic operation is completed, the doctor releases the button 10, the button 10 is reset upward under the action of the reset spring 14, the radial component force of the inclined rod 11 to the main extrusion rod 8 disappears instantaneously. The centering piece 19 immediately restores the natural state, generates a radial elastic force to push the main extrusion rod 8 back to the axial position of the sliding shell 12, so that the secondary extrusion rod 17 and the extrusion hole 18 are quickly coincident with the axis, and the secondary extrusion rod 17 falls into the extrusion hole 18 under the action of the axial force. At this time, the axial pushing force of the inclined rod 11 to the main extrusion rod 8 completely disappears, the pre-compressed disc spring 6 quickly releases the stored elastic potential energy, pushes the extrusion ring 5 to slide backward, and the extrusion ring 5 drives the main extrusion rod 8 and the base 2 to quickly retract a small distance backward, so that the electric heating wire 27 is timely separated from the eschar.

[0042] With reference to Figure 6 The centering piece 19 includes a hair spring 20, the outer side of the hair spring 20 is fixed on the pen shell 1, and the inner side is connected with an inner ring 21, the inner side of the inner ring 21 is provided with ball convexes 22 at equal intervals, and the plurality of ball convexes 22 are in contact with the main extrusion rod 8.

[0043] Specifically, the centering piece 19 takes the hair spring 20 as a core component, the hair spring 20 is made of elastic metal material, has excellent radial reset performance and fatigue resistance. The outer side of the hair spring 20 is fixedly connected with the inner wall of the pen shell 1 through an annular fixing seat, the fixing seat and the pen shell 1 are assembled in an interference fit manner, so that the hair spring 20 will not be displaced in the radial or axial direction during the working process. The inner side of the hair spring 20 is welded with the inner ring 21, the inner ring 21 adopts a lightweight metal ring structure, the inner wall thereof is precisely machined and provided with a plurality of ball convexes 22 at equal intervals in the circumferential direction, the ball convexes 22 are integrally formed with the inner ring 21, and the outer surface of the ball convexes 22 is subjected to spherical polishing treatment to form a smooth contact interface. The plurality of ball convexes 22 are all in point contact with the outer circumferential surface of the main extrusion rod 8, and this point contact mode greatly reduces the contact area between the inner ring 21 and the main extrusion rod 8, thereby significantly reducing the frictional resistance generated when the two relatively slide, and avoiding the jamming problem that may be caused by surface contact. In the natural state, the hair spring 20 is in a pre-tensioned state, the radial restraining force generated thereby is transmitted to the main extrusion rod 8 through the inner ring 21 and the ball convexes 22, and the main extrusion rod 8 is pushed to stably be in the axial position of the sliding shell 12, so as to make the secondary extrusion rod 17 and the extrusion hole 18 keep the axial coincidence state, thereby providing a basis for the subsequent precise cooperation of the two.

[0044] With reference to Figure 4 The front end of the base 2 is provided with a limiting ring three 23, the limiting ring three 23 is in contact with the left side of the limiting ring one 3, and limits the maximum retraction stroke of the base 2 backward.

[0045] With reference to Figure 4The rear side of the boss one 7 is provided with a boss three 24, and a weak spring 25 is abutted between the boss three 24 and the limiting ring two 4, for resetting the base 2 after single pressing, and the front end of the secondary extrusion rod 17 in the initial state should be flush with the boss three 24.

[0046] Referring to Figure 2 The rear end of the inner cavity of the pen shell 1 is provided with a battery 26, the battery 26 is coupled with a heating wire 27, and the switch of the heating wire 27 is integrated on the button 10, when the button 10 is pressed, the heating wire 27 is stretched out with the base 2 and heated.

[0047] Working principle of the present application:

[0048] In the initial state of the micro anti-adhesion electrocoagulation pen, the base 2 is in the retracted state, the centralizing part 19 pushes the primary extrusion rod 8 to the axis position of the sliding shell 12 through the radial elastic force, so that the secondary extrusion rod 17 is coaxial with the extrusion hole 18 of the base 2; when the doctor presses the button 10, the button 10 drives the inclined rod 11 to move downward, the inclined rod 11 cooperates with the inclined slot 9 of the primary extrusion rod 8 to generate axial and radial forces, the axial force pushes the primary extrusion rod 8 to slide forward along the sliding shell 12, and the radial force overcomes the elastic force of the centralizing part 19 to make the primary extrusion rod 8 slightly swing, and the secondary extrusion rod 17 deviates from the extrusion hole 18 (referring to Figure 5 ), the secondary extrusion rod 17 pushes the base 2 to stretch out through the end face, the base 2 drives the heating wire 27 to stretch out to stop bleeding, and the primary extrusion rod 8 continues to move forward to drive the boss one 7 to push the extrusion ring 5 to compress the disc spring 6 to store elastic potential energy. After the bleeding is completed, the doctor releases the button 10, the button 10 is reset under the action of the reset spring 14, the radial force of the inclined rod 11 on the primary extrusion rod 8 disappears, the centralizing part 19 restores to the natural state and resets the primary extrusion rod 8, so that the secondary extrusion rod 17 is coaxial with the extrusion hole 18 and falls into the hole, and the axial thrust of the inclined rod 11 disappears; the pre-compressed disc spring 6 releases the elastic potential energy to push the extrusion ring 5 to slide backward, the extrusion ring 5 drives the primary extrusion rod 8 and the base 2 to quickly retract a small distance through the boss one 7, so that the heating wire 27 is actively separated from the eschar, and then the base 2 and the primary extrusion rod 8 return to the initial state under the action of the weak spring 25 and the reset spring 14 respectively.

[0049] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, not limit, although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A micro anti-adhesion electrocoagulation pen, comprising a pen shell (1), a base (2) is slidably arranged at the front end of the pen shell (1), and an electric heating wire (27) is arranged on the base (2), characterized in that: The front end of the pen shell (1) is provided with a limiting ring one (3) and a limiting ring two (4), the limiting ring one (3) and the limiting ring two (4) are slidably provided with an extrusion ring (5), the limiting ring one (3) and the limiting ring two (4) are provided with a disc spring (6), the disc spring (6) abuts against the limiting ring one (3) and the extrusion ring (5) and is in a pre-compressed state, the radial length of the extrusion ring (5) is smaller than the distance between the limiting ring one (3) and the limiting ring two (4), the rear end of the base (2) is provided with a boss one (7), the rear side of the boss one (7) is provided with a main extrusion rod (8), the main extrusion rod (8) is provided with an inclined slot (9), the pen shell (1) is provided with a button (10), the bottom of the button (10) is connected with an inclined rod (11), the inclined rod (11) and the inclined slot (9) are in contact, the pen shell (1) is fixedly provided with a sliding shell (12), the sliding shell (12) is sleeved on the outer periphery of the main extrusion rod (8); The rear end of the main extrusion rod (8) is provided with a boss two (13), the main extrusion rod (8) is sleeved with a return spring (14), the return spring (14) abuts against the sliding shell (12) and the boss two (13); The inner diameter of the sliding shell (12) gradually decreases from front to back, the front side of the main extrusion rod (8) is provided with a secondary extrusion rod (17), the rear end of the base (2) is provided with an extrusion hole (18), the extrusion hole (18) and the secondary extrusion rod (17) are matched, the front end of the main extrusion rod (8) is sleeved with a centering piece (19); The centering piece (19) comprises a hairspring (20), the hairspring (20) is fixed on the pen shell (1) on the outside, and the inside is connected with an inner ring (21), the inner ring (21) is provided with ball convexes (22) at equal intervals on the inside, and the plurality of ball convexes (22) are in contact with the main extrusion rod (8).

2. The miniaturized anti-stick electrocautery pencil of claim 1, wherein: The rear side of the boss two (13) is provided with a partition plate (15), the partition plate (15) is provided with a limiting rod (16) at the center, and the limiting rod (16) abuts against the boss two (13).

3. The miniaturized anti-stick electrocautery pencil of claim 1, wherein: The front end of the base (2) is provided with a limiting ring three (23), and the limiting ring three (23) is in contact with the left side of the limiting ring one (3).

4. The miniaturized anti-stick electrocautery pencil of claim 1, wherein: The radial length of the extrusion ring (5) and the distance between the limiting ring one (3) and the limiting ring two (4) do not exceed 0.3mm.

5. The miniaturized anti-stick electrocautery pencil of claim 1, wherein: The rear side of the boss one (7) is provided with a boss three (24), and the boss three (24) and the limiting ring two (4) abut against a weak spring (25).

6. The miniaturized anti-stick electrocautery pencil of claim 1, wherein: The rear end of the pen shell (1) is provided with a battery (26), and the battery (26) is coupled with a heating wire (27).

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