CN216570187U - Easy-to-control electric scalpel with negative-pressure smoke suction device - Google Patents
Easy-to-control electric scalpel with negative-pressure smoke suction device Download PDFInfo
- Publication number
- CN216570187U CN216570187U CN202122719878.9U CN202122719878U CN216570187U CN 216570187 U CN216570187 U CN 216570187U CN 202122719878 U CN202122719878 U CN 202122719878U CN 216570187 U CN216570187 U CN 216570187U
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- smoke
- handle
- connecting hole
- adjusting
- connector
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- 239000000779 smoke Substances 0.000 title claims abstract description 85
- 230000007246 mechanism Effects 0.000 claims abstract description 13
- 238000007789 sealing Methods 0.000 claims description 22
- 230000000391 smoking effect Effects 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000007599 discharging Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 4
- 230000036541 health Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000700605 Viruses Species 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
The utility model discloses an easy-to-control electric scalpel of a negative pressure smoke suction device, which comprises a handle, a scalpel head, a negative pressure device and an auxiliary searchlight, a smoke exhaust channel is arranged in the handle, the cutter head is arranged at the front end of the handle, a second smoke exhaust channel is arranged in the cutter head, the second smoke discharging channel is communicated with the smoke discharging channel, the side surface of the cutter head is provided with a plurality of smoke guiding holes which are all communicated with the second smoke discharging channel, the negative pressure device is connected with the tail end of the handle through a smoke guiding pipe, the smoke guiding pipe is communicated with the smoke exhausting channel, the auxiliary searchlight can be pivoted at the front end of the handle, the auxiliary searchlight comprises a handle and an auxiliary searchlight, wherein the auxiliary searchlight is arranged on the handle, and the auxiliary searchlight is provided with an adjusting mechanism for adjusting the irradiation angle of the auxiliary searchlight.
Description
Technical Field
The utility model relates to the field of medical instruments, in particular to an easily-controlled electric scalpel with a negative pressure smoke suction device.
Background
When the electrotome is used, a large amount of smoke is generated, and researches show that a large amount of virus particles infected by patients exist in surgical smoke and are harmful to health. Meanwhile, the generation of smoke influences the operation visual field, and further influences the accuracy and the smoothness of the operation. Because traditional surgical electric knife effect is more single, need be equipped with smoke suction device in addition when the operation for the operation is inconvenient and consume the resource, also compresses the operation space simultaneously, and on the other hand when carrying out the operation to the incision inside, because the light of its inside shadowless lamp is difficult to get into, makes medical personnel have certain hindrance when the operation, influences going on of operation.
Therefore, there is a need for further improvements in the prior art.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the utility model aims to provide an easy-to-operate electric scalpel with a negative-pressure smoke sucking device.
In order to achieve the purpose, the easy-to-operate electric scalpel with the negative pressure smoking device comprises a handle, a scalpel head, the negative pressure device and an auxiliary searchlight.
A smoke exhaust channel is arranged in the handle, an extension part is arranged at the front end of the handle, a plurality of smoke guide holes are arranged at the front end of the extension part, and the smoke guide holes are communicated with the smoke exhaust channel;
the cutter head is arranged at the front end of the extension part, and the plurality of smoke guiding holes are distributed at intervals along the circumferential direction of the cutter head;
the negative pressure device is connected with the tail end of the handle through a smoke guide pipe, and the smoke guide pipe is communicated with the smoke exhaust channel;
the auxiliary searchlight can be pivotally arranged at the front end of the handle;
the handle is provided with an adjusting mechanism for adjusting the irradiation angle of the auxiliary searchlight.
In addition, the easy-to-operate electric scalpel with the negative-pressure smoking device according to the above embodiment of the utility model can also have the following additional technical features:
according to one embodiment of the utility model, the lower end of the front end surface of the handle is provided with a mounting groove, and the auxiliary searchlight is pivotally arranged in the mounting groove.
According to an embodiment of the utility model, the front ends of two opposite sides of the auxiliary searchlight are respectively provided with a first rotating shaft, the two first rotating shafts are respectively and rotatably connected with the left and right groove walls of the mounting groove, the front ends of two opposite sides of the auxiliary searchlight are respectively provided with a second rotating shaft, and the two second rotating shafts are respectively and pivotally connected with the adjusting mechanism.
According to one embodiment of the utility model, the adjustment mechanism comprises an adjustment member and an adjustment screw.
The adjusting piece is U-shaped, the adjusting piece is arranged above the handle, two ends of the adjusting piece respectively extend downwards along the left side and the right side of the handle, through grooves penetrating into the mounting groove are formed in the positions of the left side surface and the right side surface of the handle opposite to the second rotating shafts, the through grooves are vertically arranged, and the two second rotating shafts respectively penetrate through the through grooves and are in pivot connection with two ends of the adjusting piece;
the upper end of the adjusting part is provided with a threaded hole, the adjusting screw is assembled in the first threaded hole, and the lower end of the adjusting screw is rotatably connected with the upper end of the handle.
According to one embodiment of the utility model, the upper surface of the handle is provided with a connecting boss, the upper surface of the connecting boss is provided with a first connecting hole, a second connecting hole is arranged below the first connecting hole, the second connecting hole is communicated with the first connecting hole, and the diameter of the second connecting hole is larger than that of the first connecting hole;
the front end of the adjusting screw is inserted into the first connecting hole, the front end of the adjusting screw is provided with a limiting piece, the limiting piece is arranged in the second connecting hole, and the diameter of the limiting piece is larger than that of the second connecting hole.
According to one embodiment of the utility model, the tail end of the handle is connected with a connector, the connector is communicated with the smoke exhaust channel, and one end of the smoke guide pipe is in threaded connection with the connector.
According to an embodiment of the utility model, a sealing plug is arranged in the smoke guiding pipe, the sealing plug is conical, the sealing plug is connected to the inner wall of the smoke guiding pipe through a plurality of connecting parts, when the smoke guiding pipe is connected with the connector, the front end of the sealing plug can be inserted into the connector to seal and open the opening of the connector, and the end part of the smoke guiding pipe can be rotated to control the opening size of the connector.
According to one embodiment of the utility model, the sealing plug is made of rubber.
According to the easily-operated electric scalpel with the negative-pressure smoke suction device, when the easily-operated electric scalpel is used, suction force can be generated through the negative-pressure device, smoke generated during cutting can be quickly sucked through the smoke guide hole, the smoke exhaust channel and the smoke guide pipe, so that medical workers can be prevented from sucking the smoke and damaging bodies of the medical workers, meanwhile, when the operation is performed on the inner portion of a cut, the inside of the cut can be illuminated through the auxiliary searchlight, so that a doctor can perform operation, the irradiation angle of light can be adjusted through the auxiliary searchlight, the operation requirements of the doctor at different angles can be met, and the easily-operated electric scalpel is high in practicability, wide in applicability and good in using effect.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure in an embodiment of the present invention;
FIG. 2 is a schematic view of the overall structure of a handle and a tool bit according to an embodiment of the present invention;
FIG. 3 is a schematic view of an alternative perspective of the overall configuration of the handle and tool bit of an embodiment of the present invention;
FIG. 4 is a side view of the overall structure of the handle and the bit in an embodiment of the present invention;
FIG. 5 is another side view of the handle and bit assembly of the present invention;
FIG. 6 is a cross-sectional view taken along line A-A of FIG. 4 in accordance with an embodiment of the present invention;
FIG. 7 is a cross-sectional view taken along line B-B of FIG. 4 in accordance with an embodiment of the present invention;
FIG. 8 is an enlarged view of portion C of FIG. 6 in accordance with an embodiment of the present invention;
fig. 9 is an enlarged view of a portion D in fig. 6 according to an embodiment of the present invention.
Reference numerals:
a handle 10;
a smoke evacuation channel 101;
an auxiliary searchlight 102;
a first rotation shaft 1021;
the second shaft 1022;
an adjustment mechanism 103;
an adjustment member 1031;
a threaded hole 10311;
an adjustment screw 1032;
a stopper 10321;
a mounting groove 104;
a through-slot 1041;
a connection boss 105;
a first connection hole 1051;
the second connection hole 1052;
a connecting head 106;
an extension 107;
a smoke introduction hole 108;
a cutter head 20;
a negative pressure device 30;
a smoke guide pipe 301;
a sealing plug 3011;
connecting portion 3012.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the present invention and should not be construed as limiting the present invention, and all other embodiments that can be obtained by one skilled in the art based on the embodiments of the present invention without inventive efforts shall fall within the scope of protection of the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "circumferential," "radial," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The easy-to-handle electric scalpel with the negative-pressure smoking device according to the embodiment of the utility model is described in detail below with reference to the attached drawings.
Referring to fig. 1 to 9, an easy-to-handle electric surgical knife with a negative pressure smoking device according to an embodiment of the present invention includes a handle 10, a knife head 20, a negative pressure device 30 and an auxiliary searchlight 102.
A smoke exhaust channel 101 is arranged in the handle 10, an extension part 107 is arranged at the front end of the handle 10, a plurality of smoke guiding holes 108 are arranged at the front end of the extension part 107, and the smoke guiding holes 108 are communicated with the smoke exhaust channel 101;
the cutter head 20 is arranged at the front end of the extension part 107, and the plurality of smoke guiding holes 108 are distributed at intervals along the circumferential direction of the cutter head 20;
the negative pressure device 30 is connected with the tail end of the handle 10 through a smoke guiding pipe 301, and the smoke guiding pipe 301 is communicated with the smoke discharging channel 101;
the auxiliary searchlight 102 is pivotally arranged at the front end of the handle 10;
an adjusting mechanism 103 is disposed on the handle 10 for adjusting the illumination angle of the auxiliary searchlight 102.
Based on the aforesaid, when using then the accessible negative pressure equipment 30 produces suction, and through produced smog when smoke guide hole 108, exhaust passage 101, smoke guide 301 will cut attracts fast to avoid medical personnel to inhale smog and produce harm to the health, simultaneously, when carrying out the operation to the incision inside, the accessible supplementary searchlight 102 throws light on its wound inside, so that the doctor carries out the operation, and supplementary searchlight 102 still can be through you the angle of shining of light is adjusted to adjustment mechanism 103, so as to satisfy the operation demand of the different angles of doctor, its practicality is strong, extensive applicability, excellent in use effect.
Preferably, in an embodiment of the present invention, a mounting groove 104 is formed at a lower end of the front end surface of the handle 10, and the auxiliary searchlight 102 is pivotally disposed in the mounting groove 104.
In this way, the mounting groove 104 is formed at the lower end of the front end surface of the handle 10, and the auxiliary searchlight 102 is pivotally arranged in the mounting groove 104, so that the occupied area of the whole electrosurgical knife can be effectively reduced, and the electrosurgical operation can be performed more easily.
Preferably, in an embodiment of the present invention, the front ends of two opposite sides of the auxiliary searchlight 102 are respectively provided with a first rotating shaft 1021, the two first rotating shafts 1021 are respectively rotatably connected with the left and right groove walls of the mounting groove 104, the front ends of two opposite sides of the auxiliary searchlight 102 are respectively provided with a second rotating shaft 1022, and the two second rotating shafts 1022 are respectively pivotally connected with the adjusting mechanism 103.
Therefore, in the adjusting process, the irradiation angle of the auxiliary searchlight 102 can be effectively adjusted only by driving the second rotating shaft 1022 to be adjusted up and down through the adjusting mechanism 103, and the adjusting is convenient and reliable, and the practicability is high.
Preferably, in an embodiment of the present invention, the adjusting mechanism 103 comprises an adjusting member 1031 and an adjusting screw 1032.
The adjusting part 1031 is U-shaped, the adjusting part 1031 is arranged above the handle 10, two ends of the adjusting part 1031 respectively extend downwards along the left side and the right side of the handle 10, through grooves 1041 penetrating into the mounting groove 104 are respectively arranged at the positions of the left side and the right side of the handle 10 opposite to the second rotating shafts 1022, the through grooves 1041 are vertically arranged, and the two second rotating shafts 1022 respectively penetrate through the through grooves 1041 and are pivotally connected with two ends of the adjusting part 1031;
the upper end of the adjusting member 1031 is provided with a threaded hole 10311, the adjusting screw 1032 is assembled in the first threaded hole 10311, and the lower end of the adjusting screw 1032 is rotatably connected with the upper end of the handle 10.
So, because adjusting screw 1032 assembles in first screw hole 10311, just adjusting screw 1032's lower extreme with the upper end of handle 10 is rotated and is connected, so, can be through rotating adjusting screw 1032, so that the connecting piece reciprocates, thereby the drive supplementary searchlight 102 rotates, its regulative mode is simple and convenient reliable, and the practicality is strong, excellent in use effect.
Preferably, in an embodiment of the present invention, the handle 10 is provided with a connection boss 105 on an upper surface thereof, the connection boss 105 is provided with a first connection hole 1051 on an upper surface thereof, a second connection hole 1052 is provided below the first connection hole 1051, the second connection hole 1052 is connected to the first connection hole 1051, and a diameter of the second connection hole 1052 is greater than a diameter of the first connection hole 1051;
the front end of the adjusting screw 1032 is inserted into the first connecting hole 1051, the front end of the adjusting screw 1032 is provided with a limiting sheet 10321, the limiting sheet 10321 is arranged in the second connecting hole 1052, and the diameter of the limiting sheet 10321 is larger than that of the second connecting hole 1052.
Thus, since the diameter of the second connection hole 1052 is greater than that of the first connection hole 1051, and the diameter of the limiting plate 10321 is greater than that of the second connection hole 1052, the end of the adjusting screw 1032 can be stably connected to the first connection hole 1051, and can rotate along the axis thereof, and the connection method is simple and reliable, and the practicability is high.
Preferably, in an embodiment of the present invention, a connector 106 is connected to the rear end of the handle 10, the connector 106 is communicated with the smoke evacuation channel 101, and one end of the smoke guiding pipe 301 is connected to the connector 106 by a screw thread.
In this way, since one end of the smoke guiding pipe 301 is screwed to the connector 106, the smoke guiding pipe 301 and the handle 10 can be easily disassembled and assembled.
Preferably, in an embodiment of the present invention, a sealing plug 3011 is disposed inside the smoke guiding pipe 301, the sealing plug 3011 is tapered, the sealing plug 3011 is connected to the inner wall of the smoke guiding pipe 301 through a plurality of connecting portions 3012, when the smoke guiding pipe 301 is connected to the connecting head 106, the front end of the sealing plug 3011 can be inserted into the connecting head 106 to seal and open the opening of the connecting head 106, and the end of the smoke guiding pipe 301 can be rotated to control the size of the opening of the connecting head 106.
It should be noted that, during connection, the end of the smoke guiding pipe 301 is sleeved on the outer surface of the connector 106, and then, when the smoke guiding pipe 301 is connected to the connector 106, the front end of the sealing plug 3011 can be inserted into the connector 106, and as the insertion depth of the smoke guiding pipe 301 is deeper, the sealing plug 3011 is closer to the opening of the connector 106 until the opening of the connector 106 is sealed, so that the size of the opening of the connector 106 can be controlled by adjusting the connection between the smoke guiding pipe 301 and the connection joint, the adjustment mode is simple, convenient and reliable, and it should be noted that the connection portions 3012 are distributed at intervals, so that there are gaps between the sealing plug 3011 and the inner wall of the smoke guiding pipe 301.
Preferably, in an embodiment of the present invention, the sealing plug 3011 is made of rubber.
Thus, the sealing plug 3011 is made of rubber, so that the sealing plug has better sealing performance.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the technical solutions of the present invention, which are made by using the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. The utility model provides a take easy operation electrotome of negative pressure smoking device which characterized in that includes:
the smoke exhaust device comprises a handle, wherein a smoke exhaust channel is arranged in the handle, an extension part is arranged at the front end of the handle, a plurality of smoke guide holes are formed in the front end of the extension part, and the smoke guide holes are communicated with the smoke exhaust channel;
the cutter head is arranged at the front end of the extension part, and the plurality of smoke guiding holes are distributed at intervals along the circumferential direction of the cutter head;
the negative pressure device is connected with the tail end of the handle through a smoke guide pipe, and the smoke guide pipe is communicated with the smoke exhaust channel;
the auxiliary searchlight can be arranged at the front end of the handle in a pivoting manner;
the handle is provided with an adjusting mechanism for adjusting the irradiation angle of the auxiliary searchlight.
2. The electric surgical knife with the negative pressure smoking device, according to claim 1, wherein the lower end of the front end surface of the handle is provided with a mounting groove, and the auxiliary searchlight is pivotally arranged in the mounting groove.
3. The easy-to-operate electric scalpel with the negative pressure smoke absorbing device as claimed in claim 1, wherein the auxiliary searchlight is provided with a first rotating shaft at each of two opposite front ends, the first rotating shafts are respectively rotatably connected with the left and right groove walls of the mounting groove, the auxiliary searchlight is provided with a second rotating shaft at each of two opposite front ends, and the second rotating shafts are respectively pivotally connected with the adjusting mechanism.
4. The easy-to-handle electrosurgical knife with negative pressure smoke evacuation device of claim 3, wherein the adjustment mechanism comprises:
the adjusting piece is U-shaped and is arranged above the handle, two ends of the adjusting piece respectively extend downwards along the left side and the right side of the handle, through grooves penetrating into the mounting groove are formed in the positions, opposite to the second rotating shafts, of the left side surface and the right side surface of the handle, the through grooves are vertically arranged, and the two second rotating shafts respectively penetrate through the through grooves and are in pivot connection with two ends of the adjusting piece;
the adjusting screw is arranged at the upper end of the adjusting piece, the adjusting screw is assembled in the first threaded hole, and the lower end of the adjusting screw is rotatably connected with the upper end of the handle.
5. The easy-to-operate electric scalpel with the negative-pressure smoke absorbing device as claimed in claim 4, wherein a connecting boss is arranged on the upper surface of the handle, a first connecting hole is arranged on the upper surface of the connecting boss, a second connecting hole is arranged below the first connecting hole, the second connecting hole is communicated with the first connecting hole, and the diameter of the second connecting hole is larger than that of the first connecting hole;
the front end of the adjusting screw is inserted into the first connecting hole, the front end of the adjusting screw is provided with a limiting piece, the limiting piece is arranged in the second connecting hole, and the diameter of the limiting piece is larger than that of the second connecting hole.
6. The easy-to-control electric scalpel with the negative-pressure smoke sucking device as claimed in claim 1, wherein a connector is connected to the tail end of the handle, the connector is communicated with the smoke exhausting channel, and one end of the smoke guiding pipe is in threaded connection with the connector.
7. The easy-to-operate electric scalpel with the negative-pressure smoke sucking device as claimed in claim 6, wherein a sealing plug is arranged inside the smoke guiding tube, the sealing plug is conical, the sealing plug is connected to the inner wall of the smoke guiding tube through a plurality of connecting portions, when the smoke guiding tube is connected with the connector, the front end of the sealing plug can be inserted into the connector to seal and open the opening of the connector, and the end of the smoke guiding tube can be rotated to control the opening size of the connector.
8. The easy-to-operate electric scalpel with the negative-pressure smoke sucking device as claimed in claim 7, wherein the sealing plug is made of rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122719878.9U CN216570187U (en) | 2021-11-08 | 2021-11-08 | Easy-to-control electric scalpel with negative-pressure smoke suction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122719878.9U CN216570187U (en) | 2021-11-08 | 2021-11-08 | Easy-to-control electric scalpel with negative-pressure smoke suction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216570187U true CN216570187U (en) | 2022-05-24 |
Family
ID=81643352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122719878.9U Expired - Fee Related CN216570187U (en) | 2021-11-08 | 2021-11-08 | Easy-to-control electric scalpel with negative-pressure smoke suction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216570187U (en) |
-
2021
- 2021-11-08 CN CN202122719878.9U patent/CN216570187U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220524 |