CN115105197B - Smoking electric knife pen with spiral air current - Google Patents
Smoking electric knife pen with spiral air current Download PDFInfo
- Publication number
- CN115105197B CN115105197B CN202210899207.1A CN202210899207A CN115105197B CN 115105197 B CN115105197 B CN 115105197B CN 202210899207 A CN202210899207 A CN 202210899207A CN 115105197 B CN115105197 B CN 115105197B
- Authority
- CN
- China
- Prior art keywords
- cavity
- air guide
- air
- electrode
- air suction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/1206—Generators therefor
- A61B2018/1293—Generators therefor having means to prevent interference
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2218/00—Details of surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2218/001—Details of surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body having means for irrigation and/or aspiration of substances to and/or from the surgical site
- A61B2218/007—Aspiration
- A61B2218/008—Aspiration for smoke evacuation
Landscapes
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Otolaryngology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Plasma & Fusion (AREA)
- Physics & Mathematics (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Air-Flow Control Members (AREA)
Abstract
The invention relates to the field of electrosurgical instruments and discloses a smoking electric knife pen with spiral airflow. The smoking electric knife pen comprises a shell, electrodes and a control circuit board, wherein the shell is tubular and a cavity is formed in the shell. The cavity comprises an air suction cavity, an air guide cavity and a mounting cavity, the air suction cavity is communicated with the air guide cavity in front-back mode, the air guide cavity is separated from the mounting cavity, and the mounting cavity is positioned at the outer sides of the air suction cavity and the air guide cavity; the inner wall of the air guide cavity is provided with a plurality of bulges which are spirally distributed; the control circuit board is arranged in the mounting cavity, and the electrode is arranged in the air suction cavity; the front end of the electrode protrudes out of the air suction cavity, and the rear end of the electrode stretches into the mounting cavity to be electrically connected with the control circuit board. According to the technical scheme, the air guide cavity is relatively partitioned, the protrusions which are spirally distributed are arranged on the inner wall of the air guide cavity, so that the flow speed of air flow passing is improved, the problem that the air suction capacity of the smoking electrotome pen is poor is solved, and the effect of rapidly sucking toxic smoke dust at an operation part is achieved.
Description
Technical Field
The present invention relates to the field of electrosurgical instruments, and more particularly to a smoking pencil with a helical airflow.
Background
The high-frequency electric knife is an electrosurgical medical instrument for cutting tissues instead of a mechanical surgical knife. The tissue is heated when the high-frequency high-voltage current generated by the tip of the effective electrode contacts with the body, so that the separation and solidification of the body tissue are realized, and the purposes of cutting and hemostasis are achieved. Electroswitching is the pressure of the vaporization of intracellular fluid that causes the cell membrane to be ruptured by a rapid rise in cell temperature over 100 degrees celsius due to high density current. Therefore, the hemostatic knife can accurately cut without mechanical force, and simultaneously has hemostatic effect. Electrocoagulation is a relatively slow vaporization of intracellular and extracellular fluids, which causes the cells to contract and coagulate, sealing the vessel wall to stop bleeding, and eliminating the need for separate suturing of the vessel.
The high frequency electrotome generates smoke dust in the processes of electrotome and electrocoagulation. The smoke belongs to medical waste, and is easy to cause cross infection of doctors and patients due to improper treatment of the medical waste, so that the health of medical staff is endangered. In addition, the generation of smoke dust can interfere the vision of a doctor of the main knife, which is not beneficial to the operation. Therefore, the position of the tool bit of the high-frequency electric tool is usually provided with a pipeline for sucking and discharging toxic smoke dust. The air inlet of the pipeline is close to the electrotome head, and the air outlet is connected with the exhaust device. When the device works, the exhaust device generates negative pressure, and smoke dust generated at the operation part is collected and exhausted through the pipeline. The prior art adopts two structures of mutually independent pipelines and high-frequency electric knives and integrated pipelines and high-frequency electric knives. The independent pipeline has larger air inlet, good air circulation effect and simple manufacturing process; however, a dust removal system is additionally arranged, and the air inlet can only cover one side of the high-frequency electric knife head, so that omnibearing air suction cannot be realized. The integrated structure is that an air suction pipeline is arranged in the inner cavity of the shell of the high-frequency electric knife and is communicated with an air inlet arranged at the front end of the high-frequency electric knife. The integral structure has the advantages of flexible use and omnibearing air suction according to the position of the air inlet. The integrated structure is also called a smoke sucking knife, and becomes a structure selected from mainstream high-frequency electric knives.
The existing smoking knife ignores the optimal design of the air suction pipeline arranged in the inner cavity of the existing smoking knife. On one hand, the air suction pipeline is not completely sealed with the inner cavity of the smoking knife, and the uneven inner wall of the smoking knife produces disturbance on the air flow in the air suction pipeline; on the other hand, the inner wall of the suction duct cannot guide and accelerate the air flow. In the case of a limited negative pressure condition, this will result in a difficulty in further increasing the gas flow rate of the smoke knife, and in rapid removal of toxic smoke.
Disclosure of Invention
The invention aims to overcome at least one defect of the prior art, provides a smoking electrotome pen with spiral air flow, and aims to solve the problem of poor air suction capability of the smoking electrotome pen, and achieve the effect of quickly sucking toxic smoke dust at an operation part.
The technical scheme adopted by the invention is that the smoking electric knife pen with the spiral air flow comprises a shell, an electrode and a control circuit board, wherein the shell is tubular and is internally provided with a cavity, and the electrode is electrically connected with the control circuit board and is jointly arranged in the cavity.
The cavity comprises an air suction cavity, an air guide cavity and a mounting cavity, the air suction cavity is communicated with the air guide cavity in front-back mode, the air guide cavity is separated from the mounting cavity, and the mounting cavity is positioned at the outer sides of the air suction cavity and the air guide cavity; the inner wall of the air guide cavity is provided with a plurality of bulges which are spirally distributed; the control circuit board is arranged in the mounting cavity, and the electrode is arranged in the air suction cavity; the front end of the electrode protrudes out of the air suction cavity, and the rear end of the electrode stretches into the mounting cavity to be electrically connected with the control circuit board.
The rear end of the smoking electric knife pen of this scheme is equipped with the exhaust pipe interface and is connected with the exhaust pipe. The exhaust pipe is communicated with the air guide cavity. When the surgical operation device works, negative pressure is arranged in the exhaust pipe, smoke dust generated at the surgical site is sucked into the air suction cavity from the front end of the smoke suction electric knife pen, and is directly and quickly sucked by the exhaust pipe after being guided and accelerated by the air guide cavity. On the one hand, the air guide cavity is directly communicated with the air suction cavity and the exhaust pipe in sequence and is mutually isolated from other parts of the shell, in particular to the installation cavity, so that the disturbance of the shell structure to the air flow in the air guide cavity is avoided, and the flow speed of the air flow is improved. On the other hand, the inner wall of the air guide cavity is provided with a plurality of bulges which are spirally distributed, and the bulges are equivalent to rotating fan blades and guide the airflow passing from front to back so as to rotate relative to the central axis of the air guide cavity, thereby forming spiral airflow. The airflow intensively flows forwards in a vortex mode, so that the directivity of the airflow is enhanced, the turbulence phenomenon of the airflow in the air guide cavity and the subsequent exhaust pipes is reduced, and the flow speed of the airflow, namely the rotational acceleration, is further improved. Under the same negative pressure condition, the technical scheme comprehensively improves the flow speed of the airflow through the air guide cavity which is relatively isolated and a plurality of bulges which are spirally distributed and are arranged on the inner wall of the air guide cavity, further solves the problem of poor air suction capacity of the smoking electrotome pen, and achieves the effect of rapidly sucking toxic smoke dust at the operation part.
In this scheme, the casing is whole to be tubulose, but the whole shape of inhaling air cavity, air guide chamber and installation chamber does not limit, can design into cylinder, cuboid or other irregular polyhedrons as required. The suction cavity and the mounting cavity can be aligned with the central axis and can also be offset, so long as the suction cavity and the mounting cavity are communicated from front to back. The center of the cavity is taken as the inner side, and the installation cavity is positioned at the outer sides of the air suction cavity and the air guide cavity. The rear end of the control circuit board is connected with a cable for supplying power. The control circuit board is used for controlling the start and stop of the electrode work and the switching of the electric cutting and electric coagulation working modes. The front end of the electrode protruding out of the suction cavity is a tool bit of the high-frequency electrotome.
In this scheme, be the arch that the spiral distributes can be the arch itself and be the heliciform, also can be that a plurality of archs are the heliciform and arrange. The scheme realizes rotary acceleration on the air flow in the air guide cavity through the bulge.
Optionally, the bulge of the air guide cavity is an air guide strip formed by scanning the inner wall of the air guide cavity in a spiral line in a cross-section shape. The cross-sectional shape may be a regular geometric shape such as triangle, trapezoid, etc., or a special plane shape composed of parabola, hyperbola, etc. The air guide strip starts from the front end of the air guide cavity and ends at the rear end of the air guide cavity. The upper surface and the lower surface of the air guide strip are spiral surfaces, and air flow passing from front to back is guided to rotate relative to the central axis of the air guide cavity, so that spiral air flow is formed.
Further, the air guide strip is divided into a plurality of sections, the length of each section of air guide strip is 1/4 to 1/2 of the lead of each section of air guide strip, and two adjacent sections of air guide strips are staggered along the front-back direction. The air guide strip is a bulge on the inner wall of the air guide cavity, and the equivalent ventilation cross section of the air guide cavity can be reduced by the continuous air guide strip. According to the scheme, the air guide strip in the lead length range of each section is divided into a plurality of sections, and each small section of air guide strip is used for respectively carrying out rotary acceleration on air flow. After the air flow sequentially passes through the multi-section air guide strips, spiral air flow can still be formed. As the air flow is gradually and rotationally accelerated in a segmented way, the resistance of the air flow passing through the air guide cavity is reduced. In addition, because the adjacent two small sections of air guide strips are staggered in the front-back direction, the ventilation cross section of the air guide cavity at the middle position of the air guide strips is kept unchanged, and the influence of the air guide strips on the equivalent ventilation cross section of the air guide cavity is reduced.
Further, the lead angle of the air guide strip is between 60 ° and 80 °. The lead angle of the air guide strip and the inclination angle between the air guide strip and the horizontal plane are complementary angles from the longitudinal section of the air guide cavity. The larger the lead angle, the smaller the inclination angle. The smaller the angle of inclination of the air guide strip, the smaller the effect of the air guide strip as a protrusion on the passing air flow, i.e. the smaller the resistance of the air flow passing through the air guide cavity. The larger the inclination angle of the air guide strip is, the larger the air guide strip is as a bulge to influence the passing air flow, namely, the better the rotating acceleration effect is when the air flow passes through the air guide cavity. The air guide strip has the best effect of rotating and accelerating the air flow when the inclination angle is 20-30 degrees, namely, the lead angle is 60-80 degrees.
Further, the height of the air guide strip protruding out of the air guide cavity changes periodically, and the heights of the starting position and the ending position of the air guide strip are low. The air flow gradually transits into the air guide strip, rotates relative to the central axis of the air guide cavity, and gradually and excessively leaves the air guide strip. The gradual change of the protruding height of the air guide strip reduces the impact when the air flow enters and leaves the air guide strip, and avoids turbulent flow at the starting position and the ending position. For a continuous gas guide strip, the height of the starting position and the ending position of the gas guide strip is low, the height of the middle position is high, and the height of the bulge continuously changes. The height of the air guide strip in the middle position can also be periodically changed to generate the effect similar to the gradual rotation acceleration of the segments, but the height of the starting position and the ending position of the air guide strip needs to be ensured to be low. For the discontinuous multi-section air guide strip, the height of the starting position and the ending position of each small section of air guide strip is low, the height of the middle position is high, the protruding height continuously changes, and after the multi-section air guide strips are combined into a whole, the protruding height of the multi-section air guide strip periodically changes.
Further, the bulge of the air guide cavity comprises a plurality of air guide strips, and the air guide strips are staggered after rotating along the common axis of the air guide strips by a certain angle. When the air guide strip is one strip, only one single-side bulge exists on the ventilation cross section of the air guide cavity, so that the air flow can be rotationally accelerated only from one side. When the air guide strips are multiple, the ventilation cross section of the air guide cavity is provided with a plurality of bulges uniformly distributed along the circumferential direction, so that the air flow can be rotationally accelerated from multiple sides at the same time. The spiral parameters of the plurality of air guide strips must be the same but the starting positions are different. In addition, each air guide strip can be divided into a plurality of sections of air guide strips, and the height of each air guide strip protruding out of the air guide cavity changes periodically. Taking the starting position of the air guide strips as a reference, and when the air guide strips are 2, rotating 180 degrees and staggering the air guide strips; when the air guide strips are 3, the air guide strips are staggered by 120 degrees.
Optionally, the bulge of the air guide cavity is a plurality of air guide sheets, and the upper surfaces or the lower surfaces of the air guide sheets jointly form a spiral surface. The air guide plates are tiny sheet-shaped bulges on the inner wall of the air guide cavity, and are distributed in a spiral line. The air guide piece is equivalent to the further subdivision of the air guide strip of each small section, so that finer airflow sectional gradual rotary acceleration is realized, the resistance of airflow passing through the air guide cavity is further reduced, and the influence of the air guide piece on the equivalent ventilation cross section of the air guide cavity is also further reduced.
Optionally, a plurality of protrusions distributed in a spiral manner are also arranged on the inner wall of the suction cavity. The protrusions provided in the air guide cavity can also be applied to the inner wall of the air suction cavity. However, since the suction cavity needs to be provided with the motor, a mode of an air guide plate is preferably adopted, and the protruding height is not too high.
Optionally, a guide vane is arranged at the connection position of the air suction cavity and the installation cavity, a notch for the electrode to pass through is arranged on the guide vane, and the surface of the guide vane is adhered to the inner wall of the air suction cavity. The rear end of the electrode in the suction cavity needs to be extended into the outer mounting cavity to be electrically connected with the control circuit board. The communication position between the air suction cavity and the installation cavity can enable the inner wall of the air suction cavity to generate a gap, and turbulent flow is easy to generate when air flow passes through the gap. The arrangement of the guide vane just makes up the gap, so that the inner wall of the suction cavity is kept smooth.
Optionally, the ventilation cross section of the air suction cavity is larger than that of the air guide cavity, and a chamfer transition is arranged at the joint position of the air suction cavity and the air guide cavity. Based on Bernoulli principle, the ventilation cross section from the suction cavity to the air guide cavity is designed to be smaller, so that the accelerating effect is generated on the sucked air flow. The flow rate of the gas flow in the chamber increases due to the change of the "instantaneous volume flow" from large to small cross-section. In addition, the aspiration cavity is close to the operation site, and in order to enlarge the range of smoke absorption, the ventilation cross section of the aspiration cavity should be enlarged relative to the air guide cavity. The chamfer at the joint of the suction cavity and the air guide cavity ensures that the passing air flows are smoothly converged.
Compared with the prior art, the invention has the beneficial effects that:
according to the technical scheme, the air guide cavity which is relatively isolated is arranged, and the plurality of protrusions which are spirally distributed are arranged on the inner wall of the air guide cavity, so that the flow speed of air flow passing is comprehensively improved, the problem that the air suction capacity of the smoking electrotome pen is poor is solved, and the effect of rapidly sucking toxic smoke dust at an operation part is achieved.
According to the scheme, through the arrangement of the air guide strip, the upper surface and the lower surface of the air guide strip are spiral surfaces, air flow passing from front to back is guided, and the air guide strip rotates relative to the central axis of the air guide cavity, so that spiral air flow is formed. According to the scheme, through the optimization design of the length, the lead angle, the protruding height and the number of the air guide strips, the better rotation acceleration effect is obtained when the air flow passes through the air guide cavity, and meanwhile, the resistance when the air flow passes through the air guide cavity is reduced.
Drawings
Fig. 1 is a perspective sectional view of embodiment 1 of the present invention.
Fig. 2 is a perspective sectional view of a housing of embodiment 1 of the present invention.
Fig. 3 is an exploded view of example 1 of the present invention.
Fig. 4 is a longitudinal sectional view of the case of embodiment 1 of the present invention.
Fig. 5 is a structural view of an air guide bar of embodiment 1 of the present invention.
FIG. 6 is a cross-sectional view at A-A of example 1 of the present invention.
Fig. 7 is a structural view of a continuous air guide bar according to embodiment 1 of the present invention.
Fig. 8 is a structural view of an air guide sheet according to embodiment 2 of the present invention.
Fig. 9 is a structural view of an air guide bar of embodiment 3 of the present invention.
Description of the reference numerals: the device comprises a shell 10, a suction cavity 11, a gas guide cavity 12, a mounting cavity 13, a gas guide strip 14, a gas guide sheet 15, a gas guide sheet 16, an electrode 20 and a control circuit board 30.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the invention. For better illustration of the following embodiments, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
Example 1
As shown in fig. 1 to 3, the present embodiment is a smoking pencil with spiral airflow, which includes a casing 10, an electrode 20 and a control circuit board 30, wherein the casing 10 is tubular and has a cavity therein, and the electrode 20 is electrically connected to the control circuit board 30 and is disposed in the cavity.
The cavity comprises an air suction cavity 11, an air guide cavity 12 and a mounting cavity 13, wherein the air suction cavity 11 is communicated with the air guide cavity 12 in front-back mode, the air guide cavity 12 is mutually separated from the mounting cavity 13, and the mounting cavity 13 is positioned outside the air suction cavity 11 and the air guide cavity 12; the inner wall of the air guide cavity 12 is provided with a plurality of bulges which are spirally distributed; the control circuit board 30 is disposed in the mounting chamber 13, and the electrode 20 is disposed in the suction chamber 11; the front end of the electrode 20 protrudes from the suction cavity 11, and the rear end of the electrode 20 extends into the mounting cavity 13 to be electrically connected with the control circuit board 30.
The rear end of the smoking electric knife pen of this scheme is equipped with the exhaust pipe interface and is connected with the exhaust pipe. The exhaust duct is in communication with the air guide chamber 12. When the surgical operation device works, negative pressure is arranged in the exhaust pipe, smoke dust generated by a surgical site is sucked into the air suction cavity 11 from the front end of the smoke suction electric knife pen, and is guided and accelerated by the air guide cavity 12 and then is directly and quickly sucked by the exhaust pipe. On the one hand, the air guide cavity 12 is directly communicated with the air suction cavity 11 and the exhaust pipe in sequence and is mutually isolated from other parts of the shell 10, in particular the installation cavity 13, so that the disturbance of the structure of the shell 10 to the air flow in the air guide cavity 12 is avoided, and the flow speed of the air flow is improved. On the other hand, a plurality of protrusions which are spirally distributed are arranged on the inner wall of the air guide cavity 12, and correspond to the rotating fan blades, and the air flow passing through from front to back is guided to rotate relative to the central axis of the air guide cavity 12, so that spiral air flow is formed. The airflow intensively flows forwards in a vortex mode, so that the directivity of the airflow is enhanced, the turbulence phenomenon of the airflow in the air guide cavity 12 and the subsequent exhaust pipes is reduced, and the flow speed of the airflow, namely the rotational acceleration, is further improved. Under the same negative pressure condition, the scheme comprehensively improves the flow speed of the airflow through the air guide cavity 12 which is relatively isolated and a plurality of bulges which are spirally distributed and are arranged on the inner wall of the air guide cavity 12, further solves the problem of poor air suction capacity of the smoking electrotome pen, and achieves the effect of rapidly sucking toxic smoke dust at the operation part.
In this scheme, the whole body of the housing 10 is tubular, but the overall shapes of the air suction cavity 11, the air guide cavity 12 and the installation cavity 13 are not limited, and can be designed into a cylinder, a cuboid or other irregular polyhedrons according to requirements. The suction chamber 11 and the mounting chamber 13 may be axially aligned or offset so long as they communicate front to back. The installation cavity 13 is positioned outside the suction cavity 11 and the air guide cavity 12 with the center of the cavity as the inner side. The rear end of the control circuit board 30 is connected with a cable for supplying power. The control circuit board 30 is used for controlling the start and stop of the operation of the electrode 20 and the switching of the electric cutting and electric coagulation operation modes. The front end of the electrode 20 protruding out of the suction cavity 11 is the tool bit of the high-frequency electric knife.
In this embodiment, the suction chamber 11 and the air guide chamber 12 are coaxial cylindrical cavities. The installation cavity 13 is an irregular polyhedral cavity and is positioned above the suction cavity 11 and the air guide cavity 12. The lower part of the front end of the mounting chamber 13 is connected to the upper part of the rear end of the suction chamber 11 for the electrode 20 to pass through. The housing 10 is formed by an injection molding process. The housing 10 is a split structure, and is composed of a left housing and a right housing. The left shell and the right shell are connected and fixed through a buckle. The fastener may further be provided with a sealant or a sealing ring to enhance the sealing performance of each cavity in the housing 10. The upper surface of the housing 10 is also provided with operation buttons for electric cutting and electric coagulation, and the operation buttons penetrate through the housing 10 to be in contact with the control circuit board 30.
In this scheme, be the arch that the spiral distributes can be the arch itself and be the heliciform, also can be that a plurality of archs are the heliciform and arrange. The present solution achieves rotational acceleration of the air flow in the air guide cavity 12 by means of the protrusions.
As shown in fig. 4 and 5, the protrusion of the air guiding cavity 12 is an air guiding strip 14 formed by scanning on the inner wall of the air guiding cavity 12 in a spiral line in a cross-sectional shape. The cross-sectional shape may be a regular geometric shape such as triangle, trapezoid, etc., or a special plane shape composed of parabola, hyperbola, etc. The air guide bar 14 starts at the front end of the air guide cavity 12 and ends at the rear end of the air guide cavity 12. The upper and lower surfaces of the air guide bar 14 are spiral surfaces, and guide the air flow passing from front to back so as to rotate relative to the central axis of the air guide cavity 12, thereby forming a spiral air flow.
As shown in fig. 5 and 7, the air guide strip 14 is further divided into a plurality of sections, the length of each section of air guide strip 14 is 1/4 to 1/2 of the lead of each section of air guide strip, and two adjacent sections of air guide strips 14 are staggered along the front-back direction. The air guide strips 14 are protrusions on the inner wall of the air guide cavity 12, and the equivalent ventilation cross section of the air guide cavity 12 is reduced by the continuous air guide strips 14. In the scheme, the air guide strip 14 in the lead length range of each section is divided into a plurality of sections, and each small section of air guide strip 14 respectively carries out rotary acceleration on air flow. After the air flows sequentially through the multi-segment air guide strips 14, a spiral air flow can still be formed. As the airflow is gradually and rotationally accelerated in sections, the resistance of the airflow passing through the air guide cavity 12 is reduced. In addition, because the two adjacent small sections of air guide strips 14 are staggered in the front-rear direction, the ventilation cross section of the air guide cavity 12 in the middle position of the air guide strips is kept unchanged, and the influence of the air guide strips 14 on the equivalent ventilation cross section of the air guide cavity 12 is reduced.
Further, the lead angle of the air guide strip 14 is between 60 ° and 80 °. The lead angle of the air guide bar 14 and the inclination angle between the air guide bar 14 and the horizontal plane are complementary angles from the longitudinal section of the air guide chamber 12. The larger the lead angle, the smaller the inclination angle. The smaller the angle of inclination of the air guide bar 14, the less the air guide bar 14 acts as a protrusion on the air flow through, i.e. the less the resistance of the air flow through the air guide chamber 12. The larger the inclination angle of the air guide strip 14, the larger the influence of the air guide strip 14 as a protrusion on the passing air flow, that is, the better the rotation acceleration effect when the air flow passes through the air guide cavity 12. The rotational acceleration effect of the air guide strip 14 on the air flow is optimal when the inclination angle is 20 ° to 30 °, that is, when the lead angle is 60 ° to 80 °.
As shown in fig. 6, the height of the air guide strip 14 protruding from the air guide cavity 12 changes periodically, and the heights of the start position and the end position of the air guide strip 14 are low. The airflow gradually transitions into the air guide strip 14, rotates relative to the central axis of the air guide cavity 12, and gradually moves away from the air guide strip 14. The gradual change in the height of the protrusions of the air guide strip 14 reduces the impact of the air flow entering and exiting the air guide strip 14, and avoids turbulence at the beginning and ending positions. For a continuous gas guide strip 14, the height of the starting and ending positions of the gas guide strip 14 is low, the height of the intermediate position is high, and the height of the protrusion continuously varies. The height of the air guide strip 14 in the middle position may also be periodically changed to generate the effect similar to the gradual rotation acceleration of the segments, but the height of the starting position and the ending position of the air guide strip 14 needs to be ensured to be low. For the intermittent multi-section air guide strip 14, the height of the starting position and the ending position of each small section of air guide strip 14 is low, the height of the middle position is high, the protruding height continuously changes, and after the multi-section air guide strips 14 are combined into a whole, the protruding height periodically changes.
In this embodiment, the protrusion on the inner wall of the air guiding cavity 12 is an air guiding strip 14, the diameter of the air guiding cavity 12 is 8mm, the lead of the air guiding strip 14 is 64mm, and the lead angle of the air guiding strip 14 is about 68.5 °. The protruding height of the starting position and the ending position of each small segment of the air guide strip 14 is approximately 0mm, the protruding height of the middle position is approximately 1mm, and the protruding height of the air guide strip 14 is continuously changed. The air guide strip 14 of each lead length range is divided into 2 sections, the length of each small air guide strip 14 is about 1/2 of the lead of each small air guide strip, the air guide strip 14 is provided with 3 sections in total, and the air guide strip 14 of the last section is spirally downward. Each small section of air guide strip 14 is respectively arranged on the inner wall of the left shell or the right shell, wherein the left shell is provided with 2 sections of air guide strips 14, and the right shell is provided with 1 section of air guide strips 14.
Optionally, a plurality of protrusions distributed in a spiral shape are also arranged on the inner wall of the suction cavity 11. The above-described protrusions provided in the air guide chamber 12 may also be applied to the inner wall of the air suction chamber 11. However, since the motor needs to be installed in the air suction chamber 11, the air guide plate 15 is preferably adopted, and the height of the protrusion is not too high.
As shown in fig. 4, optionally, a guide vane 16 is disposed at a connection position between the suction cavity 11 and the mounting cavity 13, a notch for the electrode 20 to pass through is disposed on the guide vane 16, and a surface of the guide vane 16 is aligned with an inner wall of the suction cavity 11. The rear end of the electrode 20 in the suction chamber 11 needs to be electrically connected to the control circuit board 30 through the mounting chamber 13 extending to the outside. The communication position between the suction cavity 11 and the installation cavity 13 can enable the inner wall of the suction cavity 11 to generate a gap, and turbulence is easy to generate when air flows pass through the gap. The arrangement of the deflector 16 exactly compensates for this gap and keeps the inner wall of the suction chamber 11 smooth. In this embodiment, the guide vane 16 is a U-shaped part, and two vertical sides are provided with buckles and fixed in the mounting cavity 13; the lower surface is an arc surface, and the diameter of the arc surface is the same as that of the suction cavity 11.
Optionally, the ventilation cross section of the air suction cavity 11 is larger than that of the air guide cavity 12, and a chamfer transition is arranged at the joint position of the air suction cavity 11 and the air guide cavity 12. Based on Bernoulli principle, the ventilation cross section from the suction cavity 11 to the air guide cavity 12 is designed to be smaller, and the accelerating effect is generated on the sucked air flow. The flow rate of the gas flow in the chamber increases due to the change of the "instantaneous volume flow" from large to small cross-section. In addition, the aspiration lumen 11 is located near the surgical site, and the ventilation cross section of the aspiration lumen 11 should be enlarged relative to the air guide lumen 12 in order to expand the range of smoke absorption. The chamfer at the junction of the suction chamber 11 and the air guide chamber 12 allows the air flow passing through to be smoothly converged. In this embodiment, the diameter of the suction chamber 11 is 9.5mm.
Example 2
As shown in fig. 8, this embodiment is a smoking pencil with spiral airflow, and the same structure as that of embodiment 1 will not be described again. The present example employs an air guide piece 15 as a protrusion on the inner wall of the air guide chamber 12 instead of the air guide strip 14.
Optionally, the protrusion of the air guiding cavity 12 is a plurality of air guiding sheets 15, and the upper surfaces or the lower surfaces of the air guiding sheets 15 form a spiral surface together. The air guide plates 15 are tiny sheet-shaped bulges on the inner wall of the air guide cavity 12, and the air guide plates 15 are in spiral arrangement. The air guide piece 15 is equivalent to the further subdivision of the air guide strip 14 of each small section, so that finer gradual rotational acceleration of the air flow sections is realized, the resistance of the air flow passing through the air guide cavity 12 is further reduced, and the influence of the air guide piece 15 on the equivalent ventilation cross section of the air guide cavity 12 is further reduced.
Example 3
As shown in fig. 9, this embodiment is a smoking pencil with spiral airflow, and the same structure as that of embodiment 1 will not be described again. The present example employs two air guide strips 14 as protrusions on the inner wall of the air guide chamber 12.
Further, the protrusion of the air guiding cavity 12 includes a plurality of air guiding strips 14, and the air guiding strips 14 are staggered after rotating along a certain angle along a common axis. When the air guide strip 14 is one strip, only one single-sided bulge exists in the ventilation cross section of the air guide cavity 12, so that the air flow can be rotationally accelerated only from one side. When the number of the air guide strips 14 is plural, a plurality of protrusions are uniformly distributed in the circumferential direction on the ventilation cross section of the air guide cavity 12, so that the air flow can be rotationally accelerated from multiple sides at the same time. The helical parameters of the plurality of air guide strips 14 must be the same but the starting positions are different. In addition, each air guide strip 14 may be divided into a plurality of sections of air guide strips 14, and the height of each air guide strip 14 protruding from the air guide cavity 12 varies periodically. Based on the starting position of the air guide strips 14, the number of the air guide strips 14 is 2, and the air guide strips 14 are rotated 180 degrees to be staggered.
It should be understood that the foregoing examples of the present invention are provided for the purpose of clearly illustrating the technical aspects of the present invention and are not intended to limit the specific embodiments of the present invention. Any modification, equivalent replacement, improvement, etc. that comes within the spirit and principle of the claims of the present invention should be included in the protection scope of the claims of the present invention.
Claims (6)
1. A smoking electric knife pen with spiral air flow comprises a casing, an electrode and a control circuit board, wherein the casing is tubular and is internally provided with a cavity, and the electrode is electrically connected with the control circuit board and is jointly arranged in the cavity; it is characterized in that the method comprises the steps of,
the cavity comprises an air suction cavity, an air guide cavity and a mounting cavity, the air suction cavity is communicated with the air guide cavity in series, the air guide cavity is separated from the mounting cavity, and the mounting cavity is arranged outside the air suction cavity and the air guide cavity in parallel;
the control circuit board is arranged in the mounting cavity, and the electrode is arranged in the air suction cavity; the front end of the electrode protrudes out of the air suction cavity, and the rear end of the electrode extends into the mounting cavity to be electrically connected with the control circuit board;
an air guide strip formed by spiral line scanning is arranged on the inner wall of the air guide cavity; the air guide strips are divided into a plurality of sections, the length of each section of air guide strip is 1/4 to 1/2 of the lead of each section of air guide strip, and two adjacent sections of air guide strips are staggered along the front-back direction; the height of the air guide strip protruding out of the air guide cavity changes periodically, and the heights of the starting position and the ending position of the air guide strip are low.
2. A smoke-absorbing pencil with spiral air flow as defined in claim 1 wherein the lead angle of the air guide strip is between 60 ° and 80 °.
3. The pencil of claim 1, wherein the inner wall of the air guide chamber is provided with a plurality of air guide strips, and the plurality of air guide strips are staggered after rotating along a common axis by a certain angle.
4. A smoke-absorbing pencil as set forth in any one of claims 1 to 3 wherein said air-absorbing chamber is also provided with a plurality of said air-guiding strips in a spiral arrangement on the inner wall thereof.
5. A smoke-absorbing pencil with spiral air flow according to any one of claims 1 to 3, wherein a guide vane is arranged at the connection position of the air suction cavity and the installation cavity, a notch for the electrode to pass through is arranged on the guide vane, and the surface of the guide vane is adhered to the inner wall of the air suction cavity.
6. A smoke-absorbing pencil as claimed in any one of claims 1 to 3 wherein the ventilation cross-section of the air-absorbing chamber is greater than the ventilation cross-section of the air-guiding chamber, and the junction of the air-absorbing chamber and the air-guiding chamber is provided with a chamfer transition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210899207.1A CN115105197B (en) | 2022-07-28 | 2022-07-28 | Smoking electric knife pen with spiral air current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210899207.1A CN115105197B (en) | 2022-07-28 | 2022-07-28 | Smoking electric knife pen with spiral air current |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115105197A CN115105197A (en) | 2022-09-27 |
| CN115105197B true CN115105197B (en) | 2023-05-02 |
Family
ID=83333652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210899207.1A Active CN115105197B (en) | 2022-07-28 | 2022-07-28 | Smoking electric knife pen with spiral air current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115105197B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5234428A (en) * | 1991-06-11 | 1993-08-10 | Kaufman David I | Disposable electrocautery/cutting instrument with integral continuous smoke evacuation |
| US8057470B2 (en) * | 2007-08-30 | 2011-11-15 | Conmed Corporation | Integrated smoke evacuation electrosurgical pencil and method |
| CN203988352U (en) * | 2014-07-28 | 2014-12-10 | 重庆金山科技（集团）有限公司 | Argon pencil that can smoking gas |
| CN209529319U (en) * | 2018-08-28 | 2019-10-25 | 浙江大学 | A kind of smoking electrotome pen |
| CN211156211U (en) * | 2019-09-11 | 2020-08-04 | 上海市第六人民医院 | Electric knife capable of removing smoke |
-
2022
- 2022-07-28 CN CN202210899207.1A patent/CN115105197B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN115105197A (en) | 2022-09-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11944371B2 (en) | RF energy enabled tissue debridement device | |
| CN201375560Y (en) | Smoking electrotome pen | |
| JP2003520078A (en) | Liquid jet operated surgical instruments | |
| CN103536351B (en) | A kind of low-temperature plasma electrode assembly for hals,Nasen und Ohrenheilkunde | |
| RU2748309C2 (en) | Instrument designed for argonoplasma coagulation with multi-jet instrument head | |
| KR101297637B1 (en) | Electrocautery that has both gas suction and gas jet mechanism | |
| CN115105197B (en) | Smoking electric knife pen with spiral air current | |
| CN221786593U (en) | Water injection type high-frequency electric knife capable of sucking smoke | |
| CN217548097U (en) | Electrotomy biopsy needle and vacuum assisted breast biopsy device | |
| CN113081245A (en) | Multifunctional incision knife | |
| CN115252110B (en) | Smoke-absorbing electric surgical knife with spiral flow guide | |
| CN218279787U (en) | Surgical smoke suction knife with multi-angle rotation | |
| CN110179536A (en) | A kind of smoke abatement, anti-eschar adhesion laparoscope electric coagulation stick | |
| CN216167709U (en) | Ultrasonic knife | |
| CN218106036U (en) | Surgical smoke suction knife with integrated electrode | |
| US20230132995A1 (en) | Electrosurgical instrument | |
| CN212466155U (en) | Disposable radio frequency plasma operation electrode | |
| WO2020087706A1 (en) | Hair drying device | |
| CN214484599U (en) | Electrosurgical system and electrosurgical instrument | |
| CN210990632U (en) | Peritoneoscope suction device of function is discharged fume in area | |
| CN219331886U (en) | Leep knife for gynecological minimally invasive treatment | |
| CN213430514U (en) | Prevent inlet tube of jam plasma operation electrode | |
| CN220309195U (en) | Laryngeal vocal cord electrode | |
| CN221555891U (en) | High-frequency electric knife with smoking function | |
| CN221130028U (en) | Ripu cutter head and Li Pudao |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |