CN210056203U - Temporary fixing and resetting device for middle-warp cortical bone fracture end in operation - Google Patents
Temporary fixing and resetting device for middle-warp cortical bone fracture end in operation Download PDFInfo
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- CN210056203U CN210056203U CN201920688773.1U CN201920688773U CN210056203U CN 210056203 U CN210056203 U CN 210056203U CN 201920688773 U CN201920688773 U CN 201920688773U CN 210056203 U CN210056203 U CN 210056203U
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- cross rod
- guide slot
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- pole
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Abstract
The utility model discloses an interim fixing of skin fracture end and resetting means in art, including fixing first vertical fixation pole and the second vertical fixation pole on two sections broken bones respectively, be equipped with first horizontal pole on the first vertical fixation pole, be equipped with the second horizontal pole on the second vertical fixation pole, be equipped with the arc dish between first vertical fixation pole and the second vertical fixation pole, the arc dish is equipped with first arc guide slot and second arc guide slot with one heart, first horizontal pole slides and inserts and locate in the first arc guide slot, the second horizontal pole slides and inserts and locate in the second arc guide slot, be equipped with on the arc dish with first arc guide slot and second arc guide slot assorted angle scale mark. The utility model also discloses its operating method. Compared with the prior art, the utility model discloses rational in infrastructure, positioning accuracy is high, can effectively fix the fracture end, reduces the risk that the fracture end shifts once more, reduces the iatrogenic source nature damage that resets repeatedly in the simulation operation, saves the operation time, reduces the amount of bleeding to and reduce patient's pain.
Description
Technical Field
The utility model relates to the field of medical equipment, especially broken bone operation auxiliary device, specifically speaking are interim fixing of skin fracture end and resetting means in art.
Background
Orthopedics is a discipline combining clinical technology and material science, and the development of orthopedics is not only related to the professional skill level of surgeons, but also inseparable from the development of surgical instruments and materials. Surgical open fracture reduction internal fixation for obvious displacement or comminuted fractures has become increasingly accepted by surgeons and the world. Many times, doctors can train practical skills through teaching simulation operations, in the teaching simulation operations, fracture reduction is an important technical part of operation, fracture reduction is difficult under the traction of fracture ends of muscles at two sides in different directions, or the fracture reduction is easy to occur again after reduction (for example, fracture of middle femur is in antagonistic traction of muscles such as quadriceps femoris and biceps femoris), especially comminuted fracture, after the fracture reduction, both sides of the fracture end need to be kept at a certain distance for temporary fixation (the middle gap is filled with comminuted fracture fragments or bone grafting materials to achieve anatomical reduction). Therefore, it is important to maintain accurate fracture reduction during operation and to reliably fix the fracture end temporarily after reduction. At present, a plurality of fracture reduction devices are reported in documents, but the fracture reduction devices are not applied in clinic, and are partially caused by complex instrument operation, long learning curve and difficult popularization of surgeons; part of the devices bring burden to the economy of the patient because of obviously increasing the operation cost. Therefore, a simple, effective and low-cost fracture fixation device is urgently needed in clinic.
Disclosure of Invention
The utility model aims to solve the technical problem that to the current situation of above-mentioned prior art, provide a rational in infrastructure, positioning accuracy is high, and the fracture that can effectively fix the fracture end resets and fixing device, reaches the risk that reduces the fracture end and shift once more, reduces the iatrogenic source nature damage that resets repeatedly in the simulation teaching operation, saves the operation time, reduces the amount of bleeding to and reduce patient's pain, a low-cost interim fixing of skin fracture end and resetting means in art.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides an interim fixing of skin fracture end and resetting means in art, including fixing first vertical fixation pole and the second vertical fixation pole on two sections disconnected bones respectively, be equipped with first horizontal pole on the first vertical fixation pole, be equipped with the second horizontal pole on the second vertical fixation pole, be equipped with the arc dish between first vertical fixation pole and the second vertical fixation pole, the arc dish is equipped with first arc guide slot and second arc guide slot with one heart, first horizontal pole slides and inserts and locate in the first arc guide slot, the second horizontal pole slides and inserts and locates in the second arc guide slot, be equipped with on the arc dish with first arc guide slot and second arc guide slot assorted angle scale mark.
The projection of the first cross rod on the arc-shaped disc is superposed with the radial line of the first arc-shaped guide groove; the projection of the second cross rod on the arc-shaped disc is superposed with the radial line of the second arc-shaped guide groove.
In one scheme, a first cross rod is provided with a first threaded section, and a first threaded hole for the threaded connection of the first threaded section is formed in a first vertical fixing rod; the second cross rod is provided with a second threaded section, and the second vertical fixing rod is provided with a second threaded hole for the threaded connection of the second threaded section; the first cross rod is provided with a first limiting part hooked in the first arc-shaped guide groove, and the second cross rod is provided with a second limiting part hooked in the second arc-shaped guide groove.
The arc-shaped disc comprises a first disc body provided with a first arc-shaped guide groove and a second disc body provided with a second arc-shaped guide groove, a first limiting piece and a second limiting piece are respectively clamped between the first disc body and the second disc body, and the first disc body and the second disc body are connected with a fastener.
The first limiting part and the second limiting part are respectively spheres.
The first limiting part is rotationally connected to the tail end of the first cross rod, and the second limiting part is rotationally connected to the tail end of the second cross rod.
The first transverse rod is provided with a first transverse hole transversely penetrating through the first transverse rod, the second transverse rod is provided with a second transverse hole transversely penetrating through the second transverse rod, and the first transverse hole and the second transverse hole are used for inserting and twisting a needle-shaped tool; the fastener is including the bolt of locating the second disk body, and first disk body is equipped with the round hole that supplies the bolt to stretch out, and the lateral surface of first disk body is equipped with the nut that the screw thread connects in the bolt. In another scheme, a first arc-shaped guide groove and a second arc-shaped guide groove are respectively arranged on an arc-shaped disc in a penetrating manner, a third thread section is arranged on a first cross rod, a first nut and a second nut are arranged on the thread of the third thread section, and the first nut and the second nut are positioned on two sides of the first arc-shaped guide groove; the second cross rod is provided with a fourth threaded section, a third nut and a fourth nut are arranged on the fourth threaded section in a threaded mode, and the third nut and the fourth nut are located on two sides of the second arc-shaped guide groove.
The first cross rod is provided with a first through hole which is sleeved with the first vertical fixing rod, and the second cross rod is provided with a second through hole which is sleeved with the second vertical fixing rod.
An operation method of the temporary fixing and resetting device for the percutaneous fracture end in the operation comprises the following steps: firstly, fixing a first vertical fixing rod and a second vertical fixing rod on two broken bones respectively;
and secondly, adjusting the first cross rod and the second cross rod according to the angle scale lines to enable the two broken bones to be twisted and reset and enable the two broken bones to move oppositely to reset.
Compared with the prior art, the utility model discloses an interim fixed and resetting means of skin fracture end in art, including fixing first vertical fixation pole and the second vertical fixation pole on two sections broken bones respectively, be equipped with first horizontal pole on the first vertical fixation pole, be equipped with the second horizontal pole on the second vertical fixation pole, be equipped with the arc dish between first vertical fixation pole and the second vertical fixation pole, the arc dish is equipped with first arc guide slot and second arc guide slot with one heart, first horizontal pole slip insert locate first arc guide slot in, the second horizontal pole slip insert locate in the second arc guide slot, be equipped with on the arc dish with first arc guide slot and second arc guide slot assorted angle scale mark. The utility model also discloses its operating method. Compared with the prior art, the utility model discloses rational in infrastructure, positioning accuracy is high, can effectively fix the fracture end, reduces the risk that the fracture end shifts once more, reduces the iatrogenic source nature damage that resets repeatedly in the art, saves operation time, reduces the amount of bleeding to and reduce patient's pain.
Drawings
Fig. 1 is a schematic perspective view of a first embodiment of the present invention;
FIG. 2 is a schematic view of a usage state of the first embodiment;
FIG. 3 is an exploded schematic view of FIG. 1;
fig. 4 is a schematic sectional structure diagram of a second embodiment of the present invention.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings.
Fig. 1 to 4 are schematic structural views of the present invention.
Wherein the reference numerals are: the first vertical fixing rod 1, the first threaded hole 11, the first cross rod 2, the first limiting member 21, the first threaded section 22, the first transverse hole 23, the first through hole 24, the third threaded section 25, the arc-shaped disc 3, the first disc 31, the first arc-shaped guide slot 311, the round hole 312, the second disc 32, the second arc-shaped guide slot 321, the angle scale mark 33, the second cross rod 4, the second limiting member 41, the second threaded section 42, the second transverse hole 43, the second through hole 44, the fourth threaded section 45, the second vertical fixing rod 5, the second threaded hole 51, the fastening member 6, the nut 61, the bolt 62, the first nut 71, the second nut 72, the third nut 73 and the fourth nut 74.
In a first embodiment, as shown in fig. 1 to 3, a device for temporarily fixing and restoring a fractured end of a percutaneous bone in an operation includes a first vertical fixing rod 1 and a second vertical fixing rod 5 respectively fixed on two fractured bones, a first cross rod 2 is disposed on the first vertical fixing rod 1, a second cross rod 4 is disposed on the second vertical fixing rod 5, an arc-shaped disc 3 is disposed between the first vertical fixing rod 1 and the second vertical fixing rod 5, the arc-shaped disc 3 is concentrically provided with a first arc-shaped guide slot 311 and a second arc-shaped guide slot 321, the first cross rod 2 is slidably inserted into the first arc-shaped guide slot 311, the second cross rod 4 is slidably inserted into the second arc-shaped guide slot 321, and the arc-shaped disc 3 is provided with an angle scale mark 33 matched with the first arc-shaped guide slot 311 and the second arc-shaped guide slot 321.
In the embodiment, the projection of the first cross bar 2 on the arc-shaped disc 3 coincides with the radial line of the first arc-shaped guide slot 311; the projection of the second cross bar 4 on the arc-shaped disc 3 coincides with the radial line of the second arc-shaped guide groove 321. The moving angle of the first cross rod 2 in the first arc-shaped guide slot 311 is equal to the swinging angle of the first vertical fixing rod 1 and the corresponding broken bone; and the second cross bar 4 moves in the second arc-shaped guide groove 321 by an angle equal to the swing angle of the second vertical fixing rod 5 and the corresponding fractured bone.
In the embodiment, one scheme is that a first cross rod 2 is provided with a first threaded section 22, and a first threaded hole 11 for matching the first threaded section 22 in a threaded manner is formed in a first vertical fixing rod 1; the second cross rod 4 is provided with a second threaded section 42, and the second vertical fixing rod 5 is provided with a second threaded hole 51 for matching the second threaded section 42 in a threaded manner; the first cross bar 2 is provided with a first limiting member 21 hooked in the first arc-shaped guide slot 311, and the second cross bar 4 is provided with a second limiting member 41 hooked in the second arc-shaped guide slot 321. Can adjust the distance between first vertical fixation pole 1 and the arc dish 3 through rotating first horizontal pole 2, can adjust the distance between second vertical fixation pole 5 and the arc dish 3 through rotating second horizontal pole 4, the two sections of broken bones's of being convenient for remove in opposite directions pairs.
In the embodiment, the arc-shaped disc 3 includes a first disc body 31 provided with a first arc-shaped guide slot 311 and a second disc body 32 provided with a second arc-shaped guide slot 321, the first limiting member 21 and the second limiting member 41 are respectively clamped between the first disc body 31 and the second disc body 32, and the first disc body 31 and the second disc body 32 are connected with the fastening member 6. The distance between the first disk body 31 and the second disk body 32 can be adjusted by the fastener 6, so that the first limiting member 21 and the second limiting member 41 are clamped, and the first limiting member 21 and the second limiting member 41 are prevented from loosening.
In an embodiment, the first limiting member 21 and the second limiting member 41 are spheres respectively. The ball enables the first crosspiece 2 and the second crosspiece 4 to oscillate with respect to the arched discs 3, suitable for operating on uneven broken bones.
In one embodiment, the first limiting member 21 is pivotally connected to the end of the first cross bar 2, and the second limiting member 41 is pivotally connected to the end of the second cross bar 4. When the first disk body 31 and the second disk body 32 clamp the first limiting part 21 and the second limiting part 41, the first cross rod 2 and the second cross rod 4 can still rotate, so that the distance between the first vertical fixing rod 1 and the second vertical fixing rod 5 is adjusted, and finally the two broken bones are convenient to move oppositely and pair.
In the embodiment, the first cross rod 2 is provided with a first transverse hole 23 transversely penetrating through the first cross rod, the second cross rod 4 is provided with a second transverse hole 43 transversely penetrating through the second cross rod, and the first transverse hole 23 and the second transverse hole 43 are used for inserting and twisting a needle-shaped tool; the fastener 6 includes a bolt 62 provided on the second disc 32, the first disc 31 is provided with a circular hole 312 through which the bolt 62 protrudes, the outer side surface of the first disc 31 is provided with a nut 61 screwed to the bolt 62, and the distance between the first disc 31 and the second disc 32 can be adjusted by rotating the nut 61.
The operation method of the embodiment one comprises the following steps:
firstly, fixing a first vertical fixing rod 1 and a second vertical fixing rod 5 on two broken bones respectively;
secondly, adjusting the first cross rod 2 and the second cross rod 4 according to the angle scale marks 33 to ensure that the two broken bones are twisted and reset;
thirdly, the first disc body 31 and the second disc body 32 clamp the first limiting part 21 and the second limiting part 41 by adjusting the fastener 6, and finally the first cross rod 2 and the second cross rod 4 are prevented from continuously sliding on the arc-shaped disc 3;
and fourthly, rotating the first cross rod 2 or the second cross rod 4 to reduce the distance between the first vertical fixing rod 1 and the second vertical fixing rod 5, and finally moving and pairing the two broken bones in opposite directions.
In the second embodiment, the present embodiment is similar to the first embodiment in that: the utility model provides a interim fixing of skin fracture end and resetting means in art, including fixing first vertical fixation pole 1 and the second vertical fixation pole 5 on two sections disconnected bones respectively, be equipped with first horizontal pole 2 on the first vertical fixation pole 1, be equipped with second horizontal pole 4 on the second vertical fixation pole 5, be equipped with arc dish 3 between first vertical fixation pole 1 and the second vertical fixation pole 5, arc dish 3 is equipped with first arc guide slot 311 and second arc guide slot 321 with one heart, first horizontal pole 2 slides and inserts and locate in first arc guide slot 311, second horizontal pole 4 slides and inserts and locate in second arc guide slot 321, be equipped with on the arc dish 3 with first arc guide slot 311 and second arc guide slot 321 assorted angle scale mark 33.
In the embodiment, the projection of the first cross bar 2 on the arc-shaped disc 3 coincides with the radial line of the first arc-shaped guide slot 311; the projection of the second cross bar 4 on the arc-shaped disc 3 coincides with the radial line of the second arc-shaped guide groove 321. The moving angle of the first cross rod 2 in the first arc-shaped guide slot 311 is equal to the swinging angle of the first vertical fixing rod 1 and the corresponding broken bone; and the second cross bar 4 moves in the second arc-shaped guide groove 321 by an angle equal to the swing angle of the second vertical fixing rod 5 and the corresponding fractured bone.
The second embodiment is different from the first embodiment in that, in the present embodiment, as shown in fig. 4, a first arc-shaped guide slot 311 and a second arc-shaped guide slot 321 are respectively penetratingly provided on the arc-shaped plate 3, the first cross bar 2 is provided with a third threaded section 25, the third threaded section 25 is threadedly provided with a first nut 71 and a second nut 72, and the first nut 71 and the second nut 72 are located at both sides of the first arc-shaped guide slot 311; the second cross bar 4 is provided with a fourth threaded section 45, the fourth threaded section 45 is threaded with a third nut 73 and a fourth nut 74, and the third nut 73 and the fourth nut 74 are positioned at two sides of the second arc-shaped guide groove 321. The first cross rod 2 can be adjusted to pass in and out of the first arc-shaped guide groove 311 by adjusting the first nut 71 and the second nut 72, and the second cross rod 4 can be adjusted to pass in and out of the second arc-shaped guide groove 321 by adjusting the third nut 73 and the fourth nut 74, so that the distance between the first vertical fixing rod 1 and the second vertical fixing rod 5 can be adjusted, and finally, the two broken bones can be conveniently moved and paired in opposite directions.
In the embodiment, the first cross bar 2 is provided with a first through hole 24 sleeved on the first vertical fixing rod 1, and the second cross bar 4 is provided with a second through hole 44 sleeved on the second vertical fixing rod 5. Since the first cross bar 2 is perpendicular to the arc-shaped plate 3 after the first nut 71 and the second nut 72 are tightened, the first through hole 24 can reduce the axial acting force on the first vertical fixing rod 1 by moving on the first vertical fixing rod 1; the second cross bar 4 is perpendicular to the arc-shaped plate 3 after the same third nut 73 and fourth nut 74 are tightened, so the second through hole 44 can reduce the axial force applied to the second vertical fixing rod 5 by moving on the second vertical fixing rod 5.
The operation method of the embodiment one comprises the following steps:
firstly, fixing a first vertical fixing rod 1 and a second vertical fixing rod 5 on two broken bones respectively;
secondly, adjusting the first cross rod 2 and the second cross rod 4 according to the angle scale marks 33 to ensure that the two broken bones are twisted and reset;
thirdly, the extending length of the first cross rod 2 in the first arc-shaped guide groove 311 is controlled by adjusting the first nut 71 and the second nut 72, the extending length of the second cross rod 4 in the second arc-shaped guide groove 321 is controlled by adjusting the third nut 73 and the fourth nut 74, the distance between the first vertical fixing rod 1 and the second vertical fixing rod 5 is finally controlled, and finally the two broken bones are moved oppositely to be paired, and meanwhile, the first cross rod 2 and the second cross rod 4 can be prevented from continuously sliding on the arc-shaped disc 3.
While the preferred embodiments of the present invention have been illustrated, various changes and modifications may be made by those skilled in the art without departing from the scope of the present invention.
Claims (9)
1. The utility model provides a temporary fixing of skin fracture end and resetting means in art, is including fixing first vertical fixation pole (1) and second vertical fixation pole (5) on two sections broken bones respectively, characterized by: first vertical fixation pole (1) on be equipped with first horizontal pole (2), second vertical fixation pole (5) on be equipped with second horizontal pole (4), first vertical fixation pole (1) with second vertical fixation pole (5) between be equipped with arc dish (3), arc dish (3) concentric be equipped with first arc guide slot (311) and second arc guide slot (321), first horizontal pole (2) slide and insert locate first arc guide slot (311) in, second horizontal pole (4) slide and insert locate second arc guide slot (321) in, arc dish (3) on be equipped with first arc guide slot (311) and second arc guide slot (321) assorted angle scale mark (33).
2. The temporary fixation and reduction device for the percutaneous fractured extremity in the operation as set forth in claim 1, wherein: the projection of the first cross rod (2) on the arc-shaped disc (3) is superposed with the radial line of the first arc-shaped guide groove (311); the projection of the second cross rod (4) on the arc-shaped disc (3) is superposed with the radial line of the second arc-shaped guide groove (321).
3. The temporary fixation and reduction device for the percutaneous fractured extremity in the operation as set forth in claim 2, wherein: the first cross rod (2) is provided with a first threaded section (22), and the first vertical fixing rod (1) is provided with a first threaded hole (11) for the threaded connection of the first threaded section (22); the second cross rod (4) is provided with a second threaded section (42), and the second vertical fixing rod (5) is provided with a second threaded hole (51) for the threaded connection of the second threaded section (42); the first cross rod (2) is provided with a first limiting part (21) which is hooked in the first arc-shaped guide groove (311), and the second cross rod (4) is provided with a second limiting part (41) which is hooked in the second arc-shaped guide groove (321).
4. The temporary fixation and reduction device for the percutaneous fractured extremity in the operation as set forth in claim 3, wherein: arc dish (3) including first disk body (31) that is equipped with first arc guide slot (311) to and second disk body (32) that are equipped with second arc guide slot (321), first locating part (21) with second locating part (41) press from both sides respectively and locate first disk body (31) with second disk body (32) between, first disk body (31) with second disk body (32) even have fastener (6).
5. The temporary fixation and reduction device for the percutaneous fractured extremity in the operation as set forth in claim 4, wherein: the first limiting part (21) and the second limiting part (41) are respectively spheres.
6. The temporary fixation and reduction device for the percutaneous fractured extremity in the operation as set forth in claim 5, wherein: the first limiting part (21) is rotatably connected to the tail end of the first cross rod (2), and the second limiting part (41) is rotatably connected to the tail end of the second cross rod (4).
7. The temporary fixation and reduction device for the percutaneous fractured extremity in the operation as set forth in claim 6, wherein: the first cross rod (2) is provided with a first transverse hole (23) transversely penetrating through the first cross rod, the second cross rod (4) is provided with a second transverse hole (43) transversely penetrating through the second cross rod, and the first transverse hole (23) and the second transverse hole (43) are used for inserting and twisting a needle-shaped tool; fastener (6) including locate second disk body (32) bolt (62), first disk body (31) be equipped with supply bolt (62) to stretch out round hole (312), the lateral surface of first disk body (31) is equipped with screw and connects in nut (61) of bolt (62).
8. The temporary fixation and reduction device for the percutaneous fractured extremity in the operation as set forth in claim 2, wherein: the first arc-shaped guide groove (311) and the second arc-shaped guide groove (321) are respectively arranged on the arc-shaped disc (3) in a penetrating manner, the first cross rod (2) is provided with a third thread section (25), the third thread section (25) is provided with a first nut (71) and a second nut (72) in a threaded manner, and the first nut (71) and the second nut (72) are positioned on two sides of the first arc-shaped guide groove (311); the second cross rod (4) is provided with a fourth threaded section (45), the fourth threaded section (45) is provided with a third nut (73) and a fourth nut (74) in a threaded mode, and the third nut (73) and the fourth nut (74) are located on two sides of the second arc-shaped guide groove (321).
9. The temporary fixation and reduction device for the percutaneous fractured extremity in the operation as set forth in claim 8, wherein: the first cross rod (2) is provided with a first through hole (24) which is sleeved on the first vertical fixing rod (1), and the second cross rod (4) is provided with a second through hole (44) which is sleeved on the second vertical fixing rod (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920688773.1U CN210056203U (en) | 2019-05-15 | 2019-05-15 | Temporary fixing and resetting device for middle-warp cortical bone fracture end in operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920688773.1U CN210056203U (en) | 2019-05-15 | 2019-05-15 | Temporary fixing and resetting device for middle-warp cortical bone fracture end in operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210056203U true CN210056203U (en) | 2020-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920688773.1U Expired - Fee Related CN210056203U (en) | 2019-05-15 | 2019-05-15 | Temporary fixing and resetting device for middle-warp cortical bone fracture end in operation |
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| Country | Link |
|---|---|
| CN (1) | CN210056203U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110151282A (en) * | 2019-05-15 | 2019-08-23 | 赵华国 | Percutaneous fracture end is fixed temporarily and resetting apparatus and its operating method in a kind of art |
-
2019
- 2019-05-15 CN CN201920688773.1U patent/CN210056203U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110151282A (en) * | 2019-05-15 | 2019-08-23 | 赵华国 | Percutaneous fracture end is fixed temporarily and resetting apparatus and its operating method in a kind of art |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Ren Rong Inventor after: Zheng Yan Inventor after: Peng Linrui Inventor after: Zhong Zhaoping Inventor after: Ma Weihu Inventor after: Cao Jin Inventor after: Zhao Huaguo Inventor after: Zheng Huajiang Inventor after: Ye Zhimeng Inventor after: Zhang Nan Inventor before: Zhao Huaguo Inventor before: Zheng Yan Inventor before: Peng Linrui Inventor before: Zhong Zhaoping Inventor before: Ma Weihu Inventor before: Cao Jin Inventor before: Ren Rong Inventor before: Zheng Huajiang Inventor before: Ye Zhimeng Inventor before: Zhang Nan |
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| CB03 | Change of inventor or designer information | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200214 |
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| CF01 | Termination of patent right due to non-payment of annual fee |