CN219699986U - Transmission structure for biopsy device and biopsy device - Google Patents
Transmission structure for biopsy device and biopsy device Download PDFInfo
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- CN219699986U CN219699986U CN202321371166.5U CN202321371166U CN219699986U CN 219699986 U CN219699986 U CN 219699986U CN 202321371166 U CN202321371166 U CN 202321371166U CN 219699986 U CN219699986 U CN 219699986U
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 213
- 238000001574 biopsy Methods 0.000 title claims abstract description 54
- 230000008859 change Effects 0.000 claims abstract description 23
- 230000007246 mechanism Effects 0.000 claims abstract description 22
- 238000005070 sampling Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000013011 mating Effects 0.000 description 3
- 210000003205 muscle Anatomy 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Abstract
The utility model provides a transmission structure for a biopsy device and the biopsy device, comprising a first transmission shaft, a transmission sleeve and a speed change mechanism, wherein the first transmission shaft is a power input shaft and outputs first rotary power for driving an inner cutter tube to rotate; the transmission sleeve is coaxially arranged with the first transmission shaft and can rotate relative to the first transmission shaft, and the transmission sleeve outputs second rotary power for driving the inner cutter tube to axially translate; the speed change mechanism is connected between the first transmission shaft and the transmission sleeve, and the first transmission shaft and the transmission sleeve can rotate at different rotation speeds simultaneously. According to the utility model, the rotary power connected to the first transmission shaft is directly output by the first transmission shaft to drive the inner cutter tube to rotate; the other path is transmitted to the transmission sleeve through the speed change of the speed change mechanism to drive the axial translation of the inner cutter tube, so that the output of two different rotating speeds is realized through one power input; so that the simultaneous driving of the rotation and the axial translation of the inner cutter tube is realized by a single motor.
Description
Technical Field
The utility model belongs to the technical field of medical instruments, and particularly relates to a transmission structure for a biopsy device and the biopsy device.
Background
The biopsy surgical device is used for biopsy sampling of a human body, the biopsy surgical device with wide application is rotary-cut sampling, the biopsy surgical device generally comprises a cutter and a handle, the cutter comprises an inner cutter tube and an outer cutter tube which are sleeved on the inner side and the outer side, the front end of the outer cutter tube is a tip and is used for puncturing, a sampling groove is formed in the side surface of the outer cutter tube, which is close to the front end, the front end of the inner cutter tube is provided with a cutting edge, the inner cutter tube seals the sampling groove at the forefront end during puncturing, the inner cutter tube moves backwards again to give up the sampling groove after puncturing to the position, tissue is sucked into the sampling groove under the negative pressure condition, the inner cutter tube moves forwards and rotates in a rotary-cut mode at the moment, and the tissue entering the sampling groove is cut off and contained in the front end of the inner cutter tube.
For simultaneously driving the inner cutter tube to rotate and axially move, two driving modes exist in the prior art, the first driving mode is to adopt double motors, wherein one motor drives the inner cutter tube to rotate through one transmission mechanism, the other motor drives the inner cutter tube to translate through the other transmission mechanism, the double motors are used for driving, the transmission structure is complex, and the weight is heavy.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, it is an object of the present utility model to provide a transmission structure for a biopsy device that is capable of converting one power input into two outputs of different rotational speeds, which respectively drive the inner cutter tube to rotate and translate axially.
To achieve the above object and other related objects, the present utility model provides the following technical solutions:
a transmission structure for a biopsy device, comprising:
the first transmission shaft is a power input shaft and outputs first rotary power which is used for driving an inner cutter tube of the biopsy device to rotate;
the transmission sleeve is coaxially arranged with the first transmission shaft and can rotate along the axis of the transmission sleeve relative to the first transmission shaft, the transmission sleeve outputs second rotary power, and the second rotary power is used for driving the inner knife tube of the biopsy device to axially translate;
the speed change mechanism is connected between the first transmission shaft and the transmission sleeve and used for transmitting the power of the first transmission shaft to the transmission sleeve;
when the first transmission shaft rotates, the first transmission shaft and the transmission sleeve can rotate at different rotation speeds simultaneously.
Optionally, the transmission sleeve is coaxially sleeved on the first transmission shaft, and the axial positions of the transmission sleeve and the first transmission shaft are relatively fixed.
Optionally, a thread section is arranged on the inner wall or the outer wall of the transmission sleeve.
Optionally, the transmission sleeve is of an integral structure; the rear part of the transmission sleeve is arranged on the first transmission shaft through a first bearing, and convex ribs are arranged on the outer wall of the transmission sleeve.
Optionally, the transmission cover includes the front cover body and the back cover body of pegging graft of transmission moment of torsion, the back cover body is installed through first bearing on the first transmission shaft, the second gear is connected with the back cover body, the external wall of the front cover body is provided with protruding muscle.
Optionally, the speed change mechanism comprises a first gear, a second gear and an intermediate gear assembly connected between the first gear and the second gear; the first gear is arranged on the first transmission shaft and synchronously rotates along with the first transmission shaft, and the second gear is arranged on the transmission sleeve and synchronously rotates along with the transmission sleeve.
Optionally, the intermediate gear set includes a countershaft, a third gear and a fourth gear that are disposed on the countershaft and synchronously rotate with the countershaft, the countershaft is parallel to the first transmission shaft, the third gear is meshed with the first gear, and the fourth gear is meshed with the second gear.
Optionally, the first gear and the first transmission shaft are in an integrated structure, the second gear and the transmission sleeve are in an integrated structure, and the third gear, the fourth gear and the intermediate shaft are in an integrated structure.
Optionally, a rear portion of the first drive shaft is provided with a first torque transfer portion, and a front portion of the first drive shaft is provided with a second torque transfer portion.
The utility model also provides a biopsy device, comprising the transmission structure for the biopsy device.
As described above, the present utility model: when the first transmission shaft is connected with the rotary power, one path of the rotary power is directly output by the first transmission shaft and is used for driving the inner cutter tube to rotate; the other path is transmitted to a transmission sleeve through speed change of a speed change mechanism, and is output by the transmission sleeve to drive the axial translation of the inner cutter tube, so that the output of two different rotating speeds is realized through one power input; so that the simultaneous driving of the rotation and the axial translation of the inner cutter tube is realized by a single motor.
Drawings
FIG. 1 is a schematic diagram of a transmission structure in one embodiment;
FIG. 2 is a schematic view of a first transmission shaft according to an embodiment;
FIG. 3 is a schematic diagram of the structure of an intermediate shaft and gears thereof according to one embodiment;
FIG. 4 is a schematic diagram of a transmission sleeve and a second gear according to an embodiment;
FIG. 5 is a cross-sectional view of an embodiment of a transmission sleeve and second gear integrated structure;
FIG. 6 is a schematic diagram of a transmission structure according to another embodiment;
FIG. 7 is a schematic illustration of an embodiment of a transmission mechanism applied to a biopsy device;
fig. 8 is a schematic view of the construction of the adapter sleeve of fig. 7.
Part number description:
1-a first transmission shaft; 11-a first torque transfer portion; 12-a second torque transfer portion; 13-a first gear; 2-a transmission sleeve; 21-a first thread segment; 22-ribs; 23-a second gear; 31-a third gear; 32-an intermediate shaft; 33-fourth gear; 4-a first bearing; 51-a motor; 52-an output shaft; 53-transition axis; 61-a second bearing; 62-a third bearing; 7-a housing; 71-a rotation stop; 8-a transmission rod; 91-an adapter sleeve; 92-mating part; 93-a second thread segment; 94-a return spring; 95-sliding groove.
Detailed Description
Further advantages and effects of the present utility model will become apparent to those skilled in the art from the disclosure of the present utility model, which is described by the following specific examples.
In this case, the biopsy device is used with the end facing the patient in operation being the front and the end facing away from the patient being the rear.
Examples
As shown in fig. 1, a transmission structure for a biopsy device exemplified in this example includes a transmission structure for a biopsy device including a first transmission shaft 1, a transmission sleeve 2, and a speed change mechanism;
wherein the first transmission shaft 1 is a power input shaft, for example, for accessing the power of a motor; the rotation of the first transmission shaft 1 can output first rotation power which is used for driving the inner knife tube of the biopsy device to rotate along the axis of the inner knife tube;
the transmission sleeve 2 is coaxially arranged with the first transmission shaft 1 and can rotate along the self axis relative to the first transmission shaft 1, and the transmission sleeve 2 outputs second rotation power which is used for driving the inner cutter shaft of the biopsy device to axially translate (i.e. advance and retreat of the inner cutter tube);
the speed change mechanism is connected between the first transmission shaft 1 and the transmission sleeve 2 and is used for transmitting the rotation power of the first transmission shaft 1 to the transmission sleeve 2 so as to drive the transmission sleeve 2 to rotate; the speed change mechanism is also used for adjusting the rotating speed, and when the first transmission shaft 1 rotates at a first speed, the transmission sleeve 2 rotates at a second speed after the speed change of the speed change mechanism;
that is, when the first transmission shaft 1 rotates, the first transmission shaft 1 and the transmission sleeve 2 can simultaneously rotate at different rotational speeds, specifically, the first speed is different from the second speed, the rotational speed is faster for the rotation of the inner cutter tube, and the rotational speed is slower for the axial translation of the inner cutter tube.
When the first transmission shaft 1 is connected with the rotary power, one path of the rotary power is directly output by the first transmission shaft 1 and is used for driving the inner cutter tube to rotate; the other path is transmitted to the transmission sleeve 2 through the speed change mechanism in a speed change way, and is output by the transmission sleeve 2 to drive the axial translation of the inner cutter tube, so that the output of two different rotating speeds is realized through one power input; so that the simultaneous driving of the rotation and the axial translation of the inner cutter tube is realized by a single motor.
In some embodiments, the driving sleeve 2 is coaxially sleeved on the first driving shaft 1, the axial positions of the driving sleeve 2 and the first driving shaft 1 are relatively fixed, the axial relative fixation can be realized by arranging an axial limiting boss, a retaining ring and the like on the first driving shaft 1, and the axial limiting can also be realized by the housing of the biopsy device when the driving sleeve 2 is installed in the biopsy device.
In some embodiments, the transmission mechanism includes a first gear 13, a second gear 23, and an intermediate gear assembly connected between the first gear 13 and the second gear 23; the first gear 13 is arranged on the first transmission shaft 1 and synchronously rotates along with the first transmission shaft 1, the axial position of the first gear 13 on the first transmission shaft 1 is fixed, and the first gear 13 is matched with the first transmission shaft 1 through a spline, a key groove and the like; the second gear 23 is disposed on the driving sleeve 2 and rotates synchronously with the driving sleeve 2, specifically, the second gear 23 is fixed at an axial position on the driving sleeve 2 and is matched with the driving sleeve 2 through a spline, a key groove, and the like.
As shown in fig. 2, a first torque transmission part 11 is arranged at the rear part of the first transmission shaft 1 and used for connecting rotary power, and a second torque transmission part 12 is arranged at the front part of the first transmission shaft 1 and used for outputting the first rotary power to drive the inner cutter tube to rotate; the rotation power output by the first gear 13 is transmitted to the second gear 23 through the intermediate gear assembly, and then the second rotation power is output by the transmission sleeve 2; that is, the power of the first propeller shaft 1 is output by the first torque transmission unit 11 on one hand and by the first gear 13 on the other hand. The first torque transmission part 11 and the second torque transmission part 12 may be flat square structures, spline structures, or the like, and in this example, hexagonal structures, such as shafts or hexagonal holes with hexagonal cross sections, or the like.
In some embodiments, the intermediate gear set includes an intermediate shaft 32, a third gear 31 and a fourth gear 33, where the third gear 31 and the fourth gear 33 are disposed on the intermediate shaft 32 and rotate synchronously with the intermediate shaft 32, the third gear 31 and the fourth gear 33 may respectively use spline, keyway fit, etc. with the intermediate shaft 32, the intermediate shaft 32 is parallel to the first transmission shaft 1, the third gear 31 is meshed with the first gear 13, the fourth gear 33 is meshed with the second gear 23, and the power transmission directions are the first transmission shaft 1, the first gear 13, the third gear 31, the fourth gear 33, the second gear 23, and the transmission sleeve 2 in order.
Wherein, the speed change mechanism is a speed reduction structure to reduce the rotating speed of the transmission sleeve 2, so as to facilitate the accurate control of the axial movement stroke of the inner cutter tube; for example, the number of teeth of the third gear 31 is larger than that of the first gear 13, and the number of teeth of the fourth gear 33 is smaller than that of the second gear 23, so that two-stage deceleration is realized, and the structure is more compact; in this case, only the intermediate shaft 32 and the first transmission shaft 1 are provided to mount transmission components, which can further make the structure compact and reduce the radial size of the biopsy device. In other embodiments, multiple reduction gears may be provided as desired.
In some embodiments, the speed change mechanism may be a speed increasing structure, and when the speed increasing structure is adopted, the first speed output by the first transmission shaft 1 is used for driving the inner cutter tube to axially move, and the second speed regulated by the speed change mechanism is used for driving the inner cutter tube to rotate.
As shown in fig. 2 and 3, in this example, for easy manufacture and assembly, the first gear 13 and the first transmission shaft 1 are integrally formed, the second gear 23 and the transmission sleeve 2 are integrally formed, and the third gear 31, the fourth gear 33 and the intermediate shaft 32 are integrally formed, so that assembly of parts can be reduced, the structure is simple, the transmission is stable, and easy installation is facilitated. The speed change mechanism has compact structure and saves axial and radial space.
In some embodiments, the inner wall or the outer wall of the transmission sleeve 2 is provided with a first thread section 21, and the thread sleeve is used for being matched with a transmission part of the biopsy device to drive the inner cutter tube to axially move, for example, an adapter sleeve 91 is sleeved on the upper part of the inner cutter tube, and the adapter sleeve 91 is axially and fixedly arranged relative to the inner cutter tube and can synchronously axially move; the inner cutter tube can rotate relative to the adapter sleeve 91, the adapter sleeve 91 cannot rotate, the second threaded section 93 matched with the first threaded section 21 is arranged on the outer wall of the adapter sleeve 91, and when the transmission sleeve 2 rotates, the adapter sleeve 91 can be driven to axially move through threads, so that the inner cutter tube is driven to axially move.
As shown in fig. 4 and 5, in some embodiments, the transmission sleeve 2 is of an integral structure, the rear part of the transmission sleeve 2 is mounted on the first transmission shaft 1 through the first bearing 4, a convex rib 22 is arranged on the outer wall of the transmission sleeve 2, and the convex rib 22 is used for supporting the transmission sleeve 2 on the inner wall of the biopsy device housing 7, as shown in fig. 7; to reduce friction during rotation, for example in the front, in the middle etc. of the driving sleeve 2.
As shown in fig. 6, in another embodiment, the transmission sleeve 2 includes a front sleeve body and a rear sleeve body which are connected, and the front sleeve body and the rear sleeve body are spliced and transmit torque, specifically, can be matched through a flat square structure and a spline; in the embodiment, the connection is matched through a hexagonal structure; wherein, the back cover body is installed on first transmission shaft 1 through first bearing 4, and second gear 23 is connected as an organic wholely with the back cover body, and the external wall of preceding cover is provided with protruding muscle 22, and protruding muscle 22 also is used for driving sleeve 2 to support at biopsy device casing 7 inner wall.
The present embodiment also illustrates a biopsy device comprising a transmission structure for a biopsy device as described above, which transmission structure may be arranged in a biopsy handle of the biopsy device, in a biopsy needle assembly of the biopsy device, or in part in the biopsy needle assembly, and in part in the biopsy handle.
Referring to fig. 7, for the convenience of understanding the working principle of the present transmission structure, an arrangement of the transmission structure in a biopsy device is illustrated, the biopsy device has a housing 7, a motor 51 is installed in the housing 7, a first torque transmitting part 11 at the rear part of a first transmission shaft 1 is directly or indirectly connected with an output shaft 52 of the motor 51, and transmits power in synchronization with the rotation of the motor 51; in this example, a transition shaft 53 is provided to connect the output shaft 52 with the first transmission shaft 1, the first torque transmission part 11 is a hexagonal shaft, the corresponding transition shaft 53 has a hexagonal hole, and the two are matched to transmit torque, and in other embodiments, the first transmission shaft 1 may be directly connected with the output shaft 52 of the motor 51; the first transmission shaft 1 is mounted in the housing 7 through a second bearing 61, and the intermediate shaft 32 is mounted in the housing 7 through a third bearing 62;
the biopsy device is further provided with a transmission rod 8 fixedly connected with the inner cutter tube and synchronously rotating and axially moving, the front part of the transmission rod 8 is fixedly connected with the inner cutter tube, the rear part of the transmission rod 8 is coaxially matched with the front part of the first transmission shaft 1 and transmits torque, the transmission rod 8 and the first transmission shaft 1 can axially relatively move, in the embodiment, the second torque transmission part 12 is a transmission hole formed in the front end of the first transmission shaft 1, the rear end of the transmission rod 8 is inserted into the transmission hole, the transmission rod 8 and the transmission rod are matched with each other through a flat square structure or a spline to transmit torque, in the embodiment, the section of the rear end of the transmission rod 8 is hexagonal, and the transmission hole is a hexagonal transmission hole matched with the transmission hole.
The biopsy device is also provided with an adapter sleeve 91 for driving the inner cutter to axially move, the adapter sleeve 91 is sleeved outside the transmission rod 8, the adapter sleeve 91 stretches into the transmission sleeve 2 (namely, the transmission sleeve 2 is sleeved outside the adapter sleeve 91), the adapter sleeve 91 and the transmission rod 8 are axially fixed and circumferentially arranged in a relatively rotatable manner, namely, the adapter sleeve 91 is sleeved on the transmission rod 8 in an empty manner, the transmission rod 8 is provided with a front limiting piece and a rear limiting piece for axially limiting the adapter sleeve 91, for example, a baffle ring is welded on the transmission rod 8 for axially limiting, the circumferential rotation of the adapter sleeve 91 is limited by the shell 7, a sliding groove 95 (shown in fig. 8) is formed in the adapter sleeve 91 along the axial direction, and a rotation stopping part 71 stretching into the sliding groove 95 is arranged on the inner wall of the shell 7; the outer wall of the adapter sleeve 91 is provided with a matching part 92, and the matching part 92 is provided with a second thread section 93 matched with the first thread section 21; because the adapter sleeve 91 can only axially move and does not rotate, when the transmission sleeve 2 rotates, the adapter sleeve 91 is driven by threads to axially move, and the transmission rod 8 is provided with a limiting piece to drive the inner cutter tube to axially move forwards or backwards.
In some embodiments, the mating portion 92 is a boss protruding from the adapter sleeve 91, and a return spring 94 is disposed at the front and rear of the boss. The return spring 94 has the function of applying an axial elastic force to the mating portion 92 when the second threaded section 93 of the mating portion 92 is disengaged from the first threaded section 21 in the axial direction and then is re-engaged, so that the threads are easily bitten. The front reset spring 94 is propped between the rotation limiting piece and the front end of the boss, and the rear reset spring 94 is propped between the step of the inner wall of the transmission sleeve 2 and the rear end of the boss.
In this embodiment, when the first transmission shaft 1 is connected to the rotation power, one path of rotation power is directly output by the first transmission shaft 1 and used for driving the inner cutter tube to rotate; the other path is transmitted to the transmission sleeve 2 through the speed change mechanism in a speed change way, and is output by the transmission sleeve 2 to drive the axial translation of the inner cutter tube, so that the output of two different rotating speeds is realized through one power input; so that simultaneous actuation of the inner cutter tube rotation and axial translation is achieved by a single motor 51. The first transmission shaft 1 and the transmission sleeve 2 which are coaxially arranged are used as output components, so that the output of two rotating speeds is realized; on the basis of being convenient for the single motor 51 to drive, the structure is also compact, and the size of the product is reduced.
Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (10)
1. A transmission structure for a biopsy device, comprising:
the first transmission shaft is a power input shaft and outputs first rotary power which is used for driving an inner cutter tube of the biopsy device to rotate;
the transmission sleeve is coaxially arranged with the first transmission shaft and can rotate along the axis of the transmission sleeve relative to the first transmission shaft, the transmission sleeve outputs second rotary power, and the second rotary power is used for driving the inner knife tube of the biopsy device to axially translate;
the speed change mechanism is connected between the first transmission shaft and the transmission sleeve and used for transmitting the power of the first transmission shaft to the transmission sleeve;
when the first transmission shaft rotates, the first transmission shaft and the transmission sleeve can rotate at different rotation speeds simultaneously.
2. The transmission structure for a biopsy device of claim 1, wherein: the transmission sleeve is coaxially sleeved on the first transmission shaft, and the axial positions of the transmission sleeve and the first transmission shaft are relatively fixed.
3. The transmission structure for a biopsy device of claim 1, wherein: the inner wall or the outer wall of the transmission sleeve is provided with a thread section.
4. The transmission structure for a biopsy device of claim 2, wherein: the transmission sleeve is of an integrated structure; the rear part of the transmission sleeve is arranged on the first transmission shaft through a first bearing.
5. The transmission structure for a biopsy device of claim 2, wherein: the transmission sleeve comprises a front sleeve body and a rear sleeve body which can be connected in an inserted manner in a torque transmission manner, and the rear sleeve body is installed on the first transmission shaft through a first bearing.
6. The transmission structure for a biopsy device of any one of claims 1-5, wherein: the speed change mechanism comprises a first gear, a second gear and an intermediate gear assembly connected between the first gear and the second gear; the first gear is arranged on the first transmission shaft and synchronously rotates along with the first transmission shaft, and the second gear is arranged on the transmission sleeve and synchronously rotates along with the transmission sleeve.
7. The transmission structure for a biopsy device of claim 6, wherein: the intermediate gear set comprises an intermediate shaft, a third gear and a fourth gear, wherein the third gear and the fourth gear are arranged on the intermediate shaft and synchronously rotate along with the intermediate shaft, the intermediate shaft is parallel to the first transmission shaft, the third gear is meshed with the first gear, and the fourth gear is meshed with the second gear.
8. The transmission structure for a biopsy device of claim 7, wherein: the first gear and the first transmission shaft are of an integrated structure, the second gear and the transmission sleeve are of an integrated structure, and the third gear, the fourth gear and the intermediate shaft are of an integrated structure.
9. The transmission structure for a biopsy device of claim 1, wherein: the rear part of the first transmission shaft is provided with a first torque transmission part, and the front part of the first transmission shaft is provided with a second torque transmission part.
10. A biopsy device comprising a gearing structure according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321371166.5U CN219699986U (en) | 2023-05-31 | 2023-05-31 | Transmission structure for biopsy device and biopsy device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321371166.5U CN219699986U (en) | 2023-05-31 | 2023-05-31 | Transmission structure for biopsy device and biopsy device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219699986U true CN219699986U (en) | 2023-09-19 |
Family
ID=88002026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321371166.5U Active CN219699986U (en) | 2023-05-31 | 2023-05-31 | Transmission structure for biopsy device and biopsy device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219699986U (en) |
-
2023
- 2023-05-31 CN CN202321371166.5U patent/CN219699986U/en active Active
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| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 401121 Jupiter science and technology development center, Gaoxin Park, northern New District, Yubei District, Chongqing (No. 9, middle section of Huangshan Avenue) Patentee after: CHONGQING XISHAN SCIENCE & TECHNOLOGY Co.,Ltd. Country or region after: China Address before: 401121 Jupiter Science and Technology Development Center, High tech Park, New North Zone, Beibei District, Chongqing (No. 9, Middle Section of Mount Huangshan Avenue) Patentee before: CHONGQING XISHAN SCIENCE & TECHNOLOGY Co.,Ltd. Country or region before: China |