One-way spiral airflow smoke suction pen

Abstract

The invention discloses a one-way spiral airflow smoking pen which comprises a hollow tubular shell internally provided with a cavity, an electrode and a control circuit board, wherein the electrode and the control circuit board are arranged in the cavity. Wherein the cavity comprises an air suction cavity, an air guide cavity and a separated mounting cavity, and the air suction cavity and the air guide cavity are communicated with each other; the air guide cavity is provided with a plurality of air guide strips which are spirally arranged, the plurality of air guide strips are uniformly arranged at intervals in the circumferential direction of the longitudinal section of the air guide cavity, each air guide strip spirally extends to the air outlet end of the air guide cavity from the air inlet end of the air guide cavity, and the rotating directions of the air guide strips are the same, so that air flow generates inertia unidirectional rotating motion; the generation of reverse airflow and turbulent flow is reduced; the control circuit board comprises a top surface circuit and a bottom surface circuit. By arranging the separated air guide cavity and the installation cavity, the control circuit board is prevented from being arranged in the air guide channel and disturbing air flow in the air guide channel. The air suction stability is improved, excessive turbulent flow is avoided, the negative pressure in the air guide cavity is further increased, and the air inlet efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and more particularly to a unidirectional spiral airflow smoking pen. Background Art

[0002] A high-frequency electrosurgical unit is an electrosurgical medical device primarily used to replace mechanical scalpels for tissue cutting. Its operating principle is to utilize the heat generated by the high-frequency, high-voltage current generated by the active electrode tip when it comes into contact with human tissue to separate and coagulate tissue, achieving both cutting and hemostasis. Electrosurgical cutting uses a high-density current to rapidly raise cell temperatures above 100°C, vaporizing the intracellular fluid. The resulting pressure ruptures the cell membrane, enabling precise cutting and simultaneously stopping bleeding. Electrocoagulation, on the other hand, relatively slowly vaporizes the intracellular and extracellular fluid, causing the cells to contract and coagulate, sealing the blood vessel walls to achieve hemostasis, eliminating the need for separate sutures.

[0003] When used during surgery, high-frequency electrosurgeries produce smoke. This smoke primarily contains over 150 volatile organic compounds, including benzene compounds, formaldehyde, and cyanide. This smoke can not only harm the health of medical staff and patients, but also affect the surgical field of view. To reduce these hazards, high-frequency electrosurgeries with a smoke-sucking function, or smoke-sucking knives, have emerged. However, the internal cavity structure of existing smoke-sucking knives easily disturbs the airflow in the suction duct and is unable to guide and accelerate the airflow. Therefore, under limited negative pressure conditions, the gas flow rate of the smoke-sucking knife is difficult to further increase, affecting the smoke-sucking efficiency and failing to effectively and quickly remove surgical smoke. Summary of the Invention

[0004] The present invention aims to overcome at least one defect of the above-mentioned prior art and provide a one-way spiral airflow smoking pen, which is used to solve the problem that the inner cavity structure of the smoking knife in the prior art easily disturbs the airflow in the suction duct and cannot guide and accelerate the airflow. Under limited negative pressure conditions, the gas flow rate of the smoking knife is difficult to further increase, which affects the smoking efficiency and cannot effectively and quickly absorb the surgical smoke.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A unidirectional spiral airflow smoking pen comprises: a shell in the shape of a hollow tube with a cavity therein, and an electrode and a control circuit board arranged in the cavity; wherein the cavity comprises an air intake cavity and an air guide cavity which are interconnected, and a mounting cavity arranged on one side of the air guide cavity and separated from the air guide cavity; the control circuit board is arranged in the mounting cavity, the electrode is arranged in the air intake cavity, and the front end of the electrode extends out of the air intake cavity, and the rear end of the electrode is electrically connected to the control circuit board; the inner wall of the air guide cavity is provided with a plurality of spirally arranged air guide strips, and the plurality of air guide strips are evenly spaced along the circumferential direction of the longitudinal cross-section of the air guide cavity, each of the air guide strips spirally extends from the air inlet end of the air guide cavity to the air outlet end of the air guide cavity, and the rotation direction of each air guide strip is the same, so that the air flow generates inertial unidirectional rotational motion to reduce the generation of reverse airflow and turbulence; the control circuit board comprises a top circuit and a bottom circuit, the top circuit is used to trigger the circuit on and off of the electrode, and the bottom circuit is used to maintain continuous contact with the electrode.

[0007] The separated air guide cavity and the installation cavity protect the airflow from the influence of the installation cavity, thereby increasing the flow stability of the airflow in the air guide cavity; the connected air guide cavity and the air intake cavity enable the airflow to maintain the flow continuity from the inhalation to the outlet, reducing the loss of the cavity to the airflow. The setting of multiple air guide strips is used to guide the flow state and speed of the airflow in the air guide cavity, avoiding the reduction of smoking efficiency due to poor circulation; because each air guide strip has the same rotation direction, this causes the airflow to produce inertial unidirectional spiral motion, greatly reducing the possibility of reverse flow of the airflow and the generation of turbulence, thereby improving the air intake efficiency. The double-sided circuit of the control circuit board makes it easy to reduce the volume of the installation cavity in the shell, thereby increasing the volume of the air intake cavity in the shell, so that the air intake cavity has enough space to absorb more smoke.

[0008] In one embodiment, the longitudinal cross-section of any position of the air guide cavity is a centrally symmetrical figure with the central axis of the air guide cavity as the center of symmetry.

[0009] In one embodiment, each of the air guide strips has the same structure, and the spiral trajectory of each of the air guide strips has a turning angle ranging from 100° to 150°.

[0010] In one embodiment, the number of the air guide strips is four; and / or the turning angle of the spiral trajectory of each of the air guide strips is 120°.

[0011] In one embodiment, the angle formed between the root of the air guide strip and the inner wall of the air guide cavity is always an obtuse angle.

[0012] In one embodiment, in the longitudinal section of the air guiding cavity, the air guiding strip is an arc segment concentric with the longitudinal section of the air guiding cavity.

[0013] In one embodiment, in the longitudinal section of the air guide cavity, the sum of the arc lengths of the arc segments of the air guide strips is less than half of the circumference of the circle where the air guide strips are located.

[0014] In one embodiment, the shell includes an inner tube for forming an air guide cavity, an outer tube arranged on the outside of the inner tube and cooperating with the outer wall of the inner tube to form an installation cavity, and a suction nozzle cooperating with the inner tube and passing through the inner tube, and the suction nozzle is used to form an air suction cavity; the inner tube and the outer tube are slidably matched, and the control circuit board is provided with a conducting slide, and the rear end of the electrode is slidably matched with the conducting slide.

[0015] In one embodiment, the nozzle includes a connecting end that cooperates with the inner tube and an open end for extending the electrode, one end of the inner tube is embedded in the inner wall of the connecting end, and the inner diameter of the connecting end is larger than the inner diameter of the open end.

[0016] In one embodiment, a wall surface of the suction nozzle is provided with a lateral air suction port penetrating the wall surface, and the lateral air suction port is communicated with the suction cavity.

[0017] Compared with the prior art, the beneficial effects of the present invention include at least:

[0018] The one-way spiral airflow smoking pen of this technical solution prevents the control circuit board from being located in the air guide channel and causing disturbances to the airflow in the air guide channel by setting up a partitioned air guide cavity and an installation cavity. At the same time, this technical solution provides a plurality of spirally arranged air guide strips on the inner wall of the air guide cavity. The plurality of said air guide strips are evenly spaced along the circumferential direction of the longitudinal section of the air guide cavity. Each of said air guide strips spirally extends from the air inlet end of the air guide cavity to the air outlet end of the air guide cavity, and each air guide strip has the same rotation direction, so that when the gas enters the air guide cavity through the air inlet end of the air guide cavity, it can generate inertial one-way rotation motion, reducing the possibility of gas backflow until it is discharged through the air outlet end of the air guide cavity. The use of air guide strips with the same rotation direction throughout the entire guide path improves the smoothness of inhalation, avoids excessive turbulence, and further increases the negative pressure in the air guide cavity, thereby improving the air intake efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of a unidirectional spiral airflow smoking pen according to an embodiment of the present invention.

[0020] Figure 2 This is a cross-sectional view of a unidirectional spiral airflow smoking pen according to an embodiment of the present invention.

[0021] Figure 3 This is an exploded schematic diagram of a unidirectional spiral airflow smoking pen according to an embodiment of the present invention.

[0022] Figure 4This is a schematic bottom view of a control circuit board according to an embodiment of the present invention.

[0023] Figure 5 This is a top view of a control circuit board according to an embodiment of the present invention.

[0024] Figure 6 Schematic diagram of the structure of the inner tube according to an embodiment of the present invention.

[0025] Figure 7 This is a cross-sectional view of an inner tube according to an embodiment of the present invention.

[0026] Figure 8 It is a circumferential schematic diagram of the air guide strip according to an embodiment of the present invention in the longitudinal cross-section direction of the inner tube.

[0027] Figure 9 This is a partial structural diagram of a unidirectional spiral airflow smoking pen according to an embodiment of the present invention.

[0028] Figure 10 This is a side view of a metal contact sheet according to an embodiment of the present invention.

[0029] Figure 11 It is a partially enlarged schematic diagram of the metal contact sheet according to an embodiment of the present invention.

[0030] Figure 12 It is a partially enlarged schematic diagram of the metal contact sheet according to an embodiment of the present invention.

[0031] Figure 13 It is a partially enlarged schematic diagram of the metal contact sheet according to an embodiment of the present invention.

[0032] Figure 14 Schematic diagram of the hollow electrode of the present invention.

[0033] Figure numerals: 10, shell; 11, air suction chamber; 12, air guide chamber; 13, installation chamber; 14, air guide strip; 15, inner tube; 16, outer tube; 17, suction nozzle; 171, lateral air suction port; 20, electrode; 21, metal contact piece; 211, connecting part; 2111, annular component; 2112, arched component; 212, upturned part; 2121, first segment; 2122, second segment; 2123, third segment; 213, folding part; 2131, limiting component; 2132, abutting component; 22, blade head; 23, hollow capillary; 24, insulating sleeve; 30, control circuit board; 31, conducting slide; 32, button. DETAILED DESCRIPTION

[0034] The accompanying drawings are for illustrative purposes only and are not to be construed as limiting the present invention. To better illustrate the following embodiments, some components in the accompanying drawings may be omitted, enlarged, or reduced in size, and do not represent actual product dimensions. Those skilled in the art will appreciate that some well-known structures and their descriptions may be omitted from the accompanying drawings.

[0035] like Figures 1-14 The unidirectional spiral airflow smoking pen shown in the figure comprises: a shell 10 in the shape of a hollow tube and having a cavity therein, an electrode 20 and a control circuit board 30 arranged in the cavity; wherein the cavity comprises an air inhalation cavity 11 and an air guide cavity 12 which are interconnected, and an installation cavity 13 which is arranged on one side of the air guide cavity 12 and separated from the air guide cavity 12; the control circuit board 30 is arranged in the installation cavity 13, the electrode 20 is arranged in the air inhalation cavity 11, and the front end of the electrode 20 extends out of the air inhalation cavity 11, and the rear end of the electrode 20 is connected to the control circuit board 30. The control circuit board 30 is electrically connected; the inner wall of the air guide cavity 12 is provided with a plurality of spirally arranged air guide strips 14, and the plurality of air guide strips 14 are evenly spaced along the circumferential direction of the longitudinal section of the air guide cavity 12, and each of the air guide strips 14 spirally extends from the air inlet end of the air guide cavity 12 to the air outlet end of the air guide cavity 12, and the rotation direction of each air guide strip 14 is the same; the control circuit board 30 includes a top circuit and a bottom circuit, the top circuit is used to trigger the circuit on and off of the electrode 20, and the bottom circuit is used to maintain continuous contact with the electrode 20.

[0036] Specifically, in this embodiment, the shell 10 is tubular, making it easy for medical staff to grasp. The suction chamber 11 is located at the front of the shell, the air guide chamber 12 is located at the belly of the shell 10, and the installation chamber 13 is located at the back of the shell 10. A control circuit board 30 is provided in the installation chamber 13. The top circuit contacts a button 32 located at the back of the shell 10. When the medical staff presses the button 32, the control circuit board 30 and the top circuit are triggered to connect and disconnect, thereby controlling the connection and disconnection of the electrode 20. The bottom circuit is a conductive slide 31. When the inner tube 15 slides and retracts relative to the shell 10, the electrode 20 fixed to the inner tube 15 is pulled back and forth, driving the metal contact piece 21 fixed to the tail of the electrode 20 to move back and forth. The conductive slide 31 on the control circuit board 30 ensures that the metal contact piece 21 always maintains contact between the electrode 20 and the conductive slide 31 when moving back and forth.

[0037] Furthermore, since the control circuit board 30 in this embodiment is provided with the conducting slide 31 , when the inner tube 15 and the outer tube 16 are relatively displaced, the rear end of the electrode 20 can always be in contact with the conducting slide 31 to achieve electrical connection.

[0038] Specifically, the conductive slide 31 in this embodiment is a metal conductive surface provided on the control circuit board 30 , the metal conductive surface is extended along the extension direction, and the rear end of the electrode 20 is slidably matched with the metal conductive surface through the metal contact piece 21 .

[0039] The control circuit board 30 in this embodiment is double-sided conductive. The top circuit is conductive by the medical staff triggering the button 32, and the bottom circuit is conductive by the metal contact piece 21 and the conductive slide 31 through sliding contact. This simplifies the connection structure of the control circuit board 30 in the smoking pen, improves the assembly efficiency in the smoking pen, and reduces the cumulative assembly tolerance in the smoking pen.

[0040] The metal contact sheet 21 in this embodiment maintains a stable electrical connection between the electrode 20 and the control circuit board 30. The connecting portion 211 of the metal contact sheet 21 is used to securely connect to the electrode 20. The annular component 2111 of the connecting portion 211 is located at the rear end of the hollow tube 23. The arched component 2112 of the connecting portion 211 is used to increase the elasticity of the metal contact sheet 21. The width of the spring between the annular component 2111 and the arched component 2112 gradually narrows. The springs connected to both ends of the arched component 2112 have a uniform width, narrower than the width between the annular component 2111 and the arched component 2112, and wider than the width between the arched component 2112 and the upturned portion 212. The upturned portion 212 of the metal contact piece 21 extends upward from the bottom portion near the inner tube 15 to the top portion of the inner tube 15. The folded portion 213 is formed by folding the upturned portion 212. The folded portion 213 and the upturned portion 212 form a folded angle at their connection. The folded angle is acutely angled toward the blade head 22 of the inner tube 15 and forms a plug-in connection with the rear end of the inner tube 15. The limiting component 2131 secures the folded portion 213 to the top surface of the inner tube 15, and the abutting component 2132 abuts the folded portion 213 against the conductive slide 31 of the control circuit board 30 facing the top surface of the inner tube 15. The connecting segments in the upwardly curved portion 212 have different slopes. The first segment 2121 near the connecting portion 211 has a greater slope, while the second segment 2122 near the folded portion 213 has a smaller slope. The third segment 2123 is an arc segment, and the arc formed between the second segment 2122 and the folded portion 213 is 35 mm long. The third segment 2123 can also be formed by splicing two straight segments with gradually increasing slopes.

[0041] In this embodiment, the electrode 20 is a hollow electrode, including a blade head 22, a hollow capillary 23, and an insulating sleeve 24. The hollow capillary 23 is made of stainless steel, and the blade head 22 is processed into a flat blade shape by the stainless steel hollow capillary 23. A smooth transition connection is maintained between the tail of the blade head 22 and the hollow capillary 23 to prevent the smoke from being disturbed by the protrusion at the connection between the two when it is inhaled through the hollow electrode, thereby affecting the smoke absorption efficiency. The thickness h of the blade head 22 is 0.7 mm, the diameter D of the hollow capillary 23 is 2.36 mm, and the length d of the arc opening formed by the blade head 22 in the cross-sectional direction is 2 mm. The length L of the blade head 22 is 15 mm.

[0042] Specifically, in this embodiment, the inner wall of the air guide cavity 12 is provided with four air guide strips 14, evenly spaced along the circumference of the longitudinal section of the air guide cavity 12. That is, the air guide strips 14 are evenly spaced along any longitudinal section of the air guide cavity 12. If the air guide cavity 12 is cut into multiple longitudinal sections along its length, the projections of the air guide strips 14 on the multiple longitudinal sections overlap to cover the entire inner wall of the air guide cavity 12. Furthermore, each air guide strip 14 has the same rotational direction and width, ensuring that the projections of the air guide strips 14 on the longitudinal section always have the same rotational direction and size, thereby maintaining a stable flow of smoke within the air guide cavity 12.

[0043] Specifically, the shell 10 described in this embodiment includes an inner tube 15 for forming an air guide cavity 12, an outer tube 16 arranged on the outside of the inner tube 15 and cooperating with the outer wall of the inner tube 15 to form an installation cavity 13, and a suction nozzle 17 cooperating with the inner tube 15 and passing through the inner tube 15, and the suction nozzle 17 is used to form an air suction cavity 11.

[0044] Specifically, in this embodiment, the front end diameter of the inner tube 15 is consistent with the rear end diameter of the inner tube 15. A slide rail is provided at the bottom of the outer wall of the inner tube 15, extending throughout its entire length. The inner wall of the outer tube 16 is provided with a protrusion that cooperates with the slide rail, allowing the inner tube 15 to fully extend outward from the outer tube 16 or fully retract inward. The diameter of the suction nozzle 17 gradually increases from front to back. The front end diameter of the suction nozzle 17 is smaller than the diameter of the inner tube 15, while the rear end diameter of the suction nozzle 17 is larger than the diameter of the inner tube 15. The suction nozzle 17 is connected to the ends of both the inner tube 15 and the outer tube 16 via a locking structure, thereby forming the suction cavity 11 at the front end of the air guide cavity 12.

[0045] Specifically, the unidirectional spiral airflow smoking pen of this embodiment prevents the control circuit board 30 from being located in the air guide channel and causing disturbances in the air flow within the air guide channel by providing a partitioned air guide cavity 12 and a mounting cavity 13. Simultaneously, this embodiment provides a plurality of spirally arranged air guide strips 14 on the inner wall of the air guide cavity 12. The plurality of air guide strips 14 are evenly spaced along the circumference of the longitudinal cross-section of the air guide cavity 12. Each air guide strip 14 spirally extends from the air inlet end of the air guide cavity 12 to the air outlet end of the air guide cavity 12, and each air guide strip 14 has the same rotation direction. This allows gas to generate a unidirectional rotation when entering the air guide cavity 12 through the air inlet end until it is discharged through the air outlet end of the air guide cavity 12. The use of air guide strips 14 with the same rotation direction throughout the entire guide path improves the smoothness of inhalation, avoids excessive turbulence, and further increases the negative pressure within the air guide cavity 12, thereby improving air intake efficiency.

[0046] In the longitudinal cross-section of the air guide cavity 12 described in this embodiment, the pattern formed by each air guide strip 14 is a centrally symmetrical pattern with the central axis of the air guide cavity 12 as the center of symmetry, that is, the structure of each air guide strip 14 is exactly the same, including but not limited to the width, height, and rotation angle at each position, and each air guide strip 14 is evenly spaced around the central axis of the air guide cavity 12.

[0047] Specifically, in this embodiment, four air guide strips 14 are provided. Each air guide strip 14 is centrally symmetrical in the longitudinal cross-section of the air guide cavity 12. Each air guide strip 14 spirally wraps around and penetrates the inner wall of the inner tube 15, and has a triangular cross-section. The base of the air guide strip 14 is an arc, completely conforming to the inner wall of the inner tube 15. The hypotenuse of the air guide strip 14 is an arc, protruding above the inner wall of the inner tube 15. The side of the air guide strip 14 is an oblique line, connecting the hypotenuse protruding from the inner wall with the base conforming to the inner wall. The cross-sectional position of the air guide strip 14 in the inner tube 15 rotates and changes along the length of the inner tube 15. The width of the air guide strip 14 in the inner tube 15 does not change along the length of the inner tube 15 and remains consistent.

[0048] In order to ensure the acceleration effect of the airflow, the spiral trajectory turning angle of each of the air guide strips 14 in this embodiment ranges from 100° to 150°.

[0049] Specifically, the number of the air guide strips 14 described in this embodiment is four, and the spiral trajectory turning angle of each air guide strip 14 is 120°, that is, the normal of the air guide surface of the air guide strip 14 used to guide the airflow completes a 120° turn during the guide course of the air guide strip 14, that is, the angle between the normal of one end of the air guide strip 14 and the normal of the other end is 120°. The normal here refers to the normal of the surface where the air guide surface of the air guide strip 14 is located.

[0050] In other embodiments, the number of the air guide strips 14 can be increased or decreased according to the inner diameter of the air inhalation cavity 11 and the desired air guiding effect. Similarly, the direction of the spiral trajectory of each air guide strip 14 can also be set according to actual conditions.

[0051] In this embodiment, the angle between the root of the air guide strip 14 and the inner wall of the air guide cavity 12 is always an obtuse angle, that is, the angle of the connection between the air guide strip 14 and the air guide cavity 12 is an obtuse angle, so that the root of the air guide strip 14 transitions smoothly to reduce the stress concentration at the root of the air guide strip 14. On the one hand, it can further reduce the airflow resistance and improve the air intake efficiency, and on the other hand, it can avoid fatigue strain of the air guide strip 14.

[0052] In the longitudinal section of the air guide cavity 12 described in this embodiment, the air guide strip 14 is an arc segment concentric with the longitudinal section of the air guide cavity 12, so that the airflow is located in the center of the air guide cavity 12, improving the stability of the airflow and effectively guiding the airflow.

[0053] Specifically, in the longitudinal cross-section of the air guide cavity 12 described in this embodiment, the sum of the arc lengths of the arc segments of each of the air guide strips 14 is less than half of the circumference of the circle on which the air guide strips 14 are located. This ensures that the air guide cavity 12 has sufficient space for airflow to pass through, while the air guide strips 14 accelerate the airflow.

[0054] The suction nozzle 17 in this embodiment includes a connecting end that mates with the inner tube 15 and an open end for extending the electrode 20 and inhaling smoke during surgery. One end of the inner tube 15 is embedded in the inner wall of the connecting end, and the inner diameter of the connecting end is larger than that of the open end. This ensures that the cross-section of the transition between the suction cavity 11 and the air guide cavity 12 is larger than that of the air guide cavity 12, increasing the airflow velocity when it enters the air guide cavity 12 from the suction cavity 11, thereby improving suction efficiency.

[0055] In addition, based on the Coanda effect principle, the wall surface of the suction nozzle 17 in this embodiment is further provided with a lateral air suction port 171 penetrating the wall surface, and the lateral air suction port 171 is communicated with the suction cavity 11 .

[0056] Specifically, in this embodiment, the suction nozzle 17 is a smooth tubular structure, and there are multiple lateral air suction ports 171 , which are spaced apart along the circumferential direction of the suction nozzle 17 .

[0057] Specifically, the nozzle 17 is provided with four lateral air inlets 171 evenly distributed around the outer side surface near the blade head 22. This allows smoke coming into contact with the blade head 22 to be drawn into the suction chamber 11 not only through the hollow tube 23 but also through the lateral air inlets 171. The four lateral air inlets 171 are respectively provided at the front ends of the four air guide strips 14, allowing smoke to flow smoothly onto the air guide strips 14 after being drawn in by the lateral air inlets 171, thereby avoiding turbulence between the lateral air inlets 171 and the air guide strips 14.

[0058] In another embodiment, the suction nozzle 17 can be set to a stepped tubular structure, the end of the stepped tube with a larger diameter tube is the connecting end of the suction nozzle 17, and the end of the stepped tube with a smaller diameter tube is the opening end of the suction nozzle 17. The lateral air intake 171 is provided at the step transition of the suction nozzle 17, so that part of the air flow enters the air guide cavity 12 through the lateral air intake 171.

[0059] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the technical solutions of the present invention, and are not intended to limit the specific implementation methods of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the claims of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A one-way spiral airflow smoking pen, characterized in that: include:

20. The air intake pipe of claim 19, wherein the at least one air intake duct is configured to extend out of the at least one air intake duct and is configured to extend out of the at least one air intake duct. The at least one air intake duct, comprising: a first end for receiving the air from the air intake duct and a second end for receiving the air from the air intake duct; a second end for receiving the air from the air intake duct; and a third end for receiving the air from the air intake duct.

2. The one-way spiral airflow smoking pen according to claim 1, characterized in that: In the longitudinal section of the air guide cavity, the pattern formed by the air guide strips is a centrally symmetrical pattern with the central axis of the air guide cavity as the center of symmetry.

3. The one-way spiral airflow smoking pen according to claim 1, characterized in that: The structure of each of the air guide strips is the same, and the spiral trajectory turning angle of each of the air guide strips ranges from 100° to 150°.

4. The one-way spiral airflow smoking pen according to claim 1, characterized in that: The number of the air guide strips is four; and / or the turning angle of the spiral track of each of the air guide strips is 120°.

5. The one-way spiral airflow smoking pen according to claim 1, characterized in that: The angle formed between the root of the air guide strip and the inner wall of the air guide cavity is always an obtuse angle.

6. The one-way spiral airflow smoking pen according to claim 1, characterized in that: In the longitudinal section of the air guide cavity, the air guide strip is an arc segment concentric with the longitudinal section of the air guide cavity.

7. The one-way spiral airflow smoking pen according to claim 6, characterized in that: In the longitudinal section of the air guide cavity, the sum of the arc lengths of the arc segments of the air guide strips is less than half of the circumference of the circle where the air guide strips are located.

8. The one-way spiral airflow smoking pen according to any one of claims 1 to 7, characterized in that: The shell includes an inner tube for forming an air guide cavity, an outer tube arranged on the outside of the inner tube and cooperating with the outer wall of the inner tube to form a mounting cavity, and a suction nozzle cooperating with the inner tube and passing through the inner tube, the suction nozzle is used to form an air suction cavity; the inner tube and the outer tube are slidably matched, and the control circuit board is provided with a conducting slide, and the rear end of the electrode is slidably matched with the conducting slide.

9. The one-way spiral airflow smoking pen according to claim 8, characterized in that: The nozzle includes a connecting end matched with the inner tube and an open end for extending the electrode. One end of the inner tube is embedded in the inner wall of the connecting end, and the inner diameter of the connecting end is larger than the inner diameter of the open end.

10. The one-way spiral airflow smoking pen according to claim 8, characterized in that: The wall surface of the suction nozzle is provided with a lateral air suction port penetrating the wall surface, and the lateral air suction port is communicated with the air suction cavity.

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