CN222341488U - Lower limb lifting device - Google Patents
Lower limb lifting device Download PDFInfo
- Publication number
- CN222341488U CN222341488U CN202420934447.5U CN202420934447U CN222341488U CN 222341488 U CN222341488 U CN 222341488U CN 202420934447 U CN202420934447 U CN 202420934447U CN 222341488 U CN222341488 U CN 222341488U
- Authority
- CN
- China
- Prior art keywords
- plate
- support plate
- leg
- lower limb
- bottom plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 210000003141 lower extremity Anatomy 0.000 title claims abstract description 47
- 230000005540 biological transmission Effects 0.000 claims abstract description 39
- 210000002414 leg Anatomy 0.000 claims description 67
- 210000000689 upper leg Anatomy 0.000 claims description 15
- 230000000452 restraining effect Effects 0.000 claims description 8
- 210000004712 air sac Anatomy 0.000 claims 2
- 210000003414 extremity Anatomy 0.000 abstract description 4
- 208000010392 Bone Fractures Diseases 0.000 description 3
- 206010017076 Fracture Diseases 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229920001821 foam rubber Polymers 0.000 description 2
- 230000000474 nursing effect Effects 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 206010061599 Lower limb fracture Diseases 0.000 description 1
- 208000002847 Surgical Wound Diseases 0.000 description 1
- 206010047249 Venous thrombosis Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 230000004087 circulation Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Rehabilitation Tools (AREA)
Abstract
The utility model relates to the field of medical equipment, in particular to a lower limb lifting device which comprises a bottom plate and a supporting plate, wherein the top of the bottom plate is rotationally connected with one end of the supporting plate, the supporting plate and the bottom plate are in an angle relation, an angle adjusting device is arranged on the bottom plate and comprises a transmission plate, a rack, a gear, a motor and a supporting rod, the transmission plate is slidably arranged on the bottom plate, the sliding direction is the length direction of the bottom plate, the rack is arranged at the bottom of the transmission plate, the rack is meshed with the gear, a transmission cavity is formed in the bottom plate, the gear and the rack are arranged in the transmission cavity, the gear is in transmission connection with an output shaft of the motor, the motor is electrically connected with a controller, the controller is also electrically connected with a power module, one end of the supporting rod is hinged with the transmission plate, the other end of the supporting rod is hinged with the supporting plate, and the hinged joint of the other end is not arranged at the rotation connection end of the supporting plate and the bottom plate. The device adjusts the height that patient's low limbs were raised through the data transmission between the controller, easy operation, and the patient can adjust by oneself according to self condition.
Description
Technical Field
The utility model relates to the field of medical equipment, in particular to a lower limb lifting device.
Background
After fracture, both the patient with plaster external fixation and the patient with internal fixation after surgical incision can have blood stasis and swelling at the surgical site of the patient. In addition to conventional medication, raising the affected limb can reduce the swelling and increase blood flow to the heart, which can further shorten the fracture healing time. Especially, the lower limb fracture patient needs to brake after fracture, and after lifting, the circulation can be quickened, and the lower limb venous thrombosis can be prevented.
Most hospitals commonly use straps to lift the legs of the patient, but the straps are used to lift the legs of the patient all the time, which is less comfortable and less stable in restraint due to the ease of rocking. The method of raising the affected limb by using the height of the overlapped pillows is also adopted, so that the method is easy to waste, the pillow is inconvenient to adjust the raising angle by using the pillow to be raised, the pillow is troublesome to use, and in addition, the pillow is unstable when being overlapped, the affected limb is easy to fall, and secondary injury is caused to a patient.
The utility model patent of China with the application number of CN202121259689.1 discloses a lower limb lifting pad, which comprises a base plate, a first mounting plate is fixedly mounted in the middle of the upper part of the base plate, a second mounting plate is fixedly mounted on one side of the base plate, a first sliding rail and a second sliding rail are fixedly mounted between the first mounting plate and the second mounting plate, a first sliding block is sleeved on the first sliding rail, a first connecting plate is fixedly mounted on the other side of the base plate, a first supporting plate is hinged to the first connecting plate through a first rotating shaft, a first supporting frame is hinged to the first supporting plate through a third rotating shaft, a first sleeve is fixedly mounted on the upper side edge of the first sliding block, and the bottom end of the first supporting frame is spliced in the first sleeve. However, although the pillow is not required to be lifted, the height of the lower limb lifting pad can be adjusted according to the needs of a patient, and the comfort of the patient is enhanced. However, the lower limb lifting pad needs to be manually fixed on the second support frame, the fixing device needs to be operated in the process of fixing the second support frame, the fixing steps are relatively more, and the lower limb lifting pad cannot be quickly fixed, and in addition, when the lower limb lifting pad is used, the thighs are in a suspended state, so that patients feel uncomfortable.
Disclosure of utility model
In view of the above, it is necessary to provide a lower limb elevation device, which adjusts the angle between the support plate and the bottom plate through data transmission between controllers, so as to achieve the purpose of adjusting the elevation of the lower limb of the patient, and has simple operation, and the patient can adjust the lower limb elevation device according to the situation of the patient.
The lower limb lifting device comprises a bottom plate and a leg supporting plate for supporting lower limbs of a patient, wherein the top of the bottom plate is rotatably connected with one end of the supporting plate, the leg supporting plate and the bottom plate are in an angle relation, an angle adjusting device for adjusting the angle between the leg supporting plate and the bottom plate is arranged on the bottom plate, the angle adjusting device comprises a transmission plate, a rack, a gear, a motor and a supporting rod, the transmission plate is slidably arranged on the bottom plate, the sliding direction is the length direction of the bottom plate, the rack is arranged at the bottom of the transmission plate, the rack is meshed with the gear, a transmission cavity is formed in the bottom plate, the gear and the rack are arranged in the transmission cavity, the gear is in transmission connection with an output shaft of the motor, the motor is electrically connected with a controller, the controller is also electrically connected with a power supply module, one end of the supporting rod is hinged with the transmission plate, the hinged position of the other end of the supporting rod is not arranged at the rotating connection end of the leg supporting plate and the bottom plate, and the top of the leg supporting plate is slidably provided with the sole for supporting the supporting plate, and the sole of the leg supporting plate is in the sliding direction.
Further, the sole backup pad sets up with the top surface interval of shank backup pad, its face perpendicular to the length direction of shank backup pad, the sole backup pad passes through slide drive subassembly and installs in the shank backup pad, slide drive subassembly includes drive lead screw, first slider and sole connecting piece, drive lead screw rotates to be set up on the ascending lateral wall of shank backup pad width direction, its pole length direction is on a parallel with the length direction of shank backup pad, threaded connection has first slider on the drive lead screw, first slider and shank backup pad sliding connection, first slider passes through the sole connecting piece and connects the sole backup pad.
Further, the sliding driving assembly further comprises a guide rod, the guide rod is mounted on the side wall of the leg support plate in the width direction, the side wall is not identical to the side wall where the driving screw is located, the rod length direction of the guide rod is parallel to the rod length direction of the driving screw, a first sliding block is mounted on the guide rod in a sliding manner, and the first sliding block is connected with the sole support plate through a sole connecting piece.
Further, the drive plate is located at the top of the drive chamber.
Further, the support bars are provided on both sides in the width direction of the leg support plate.
Further, the shank backup pad includes shank backup pad and thigh backup pad, shank backup pad articulates the bracing piece, its one end is rotated and is connected the bottom plate, and the other end is rotated and is connected the thigh backup pad, the thigh backup pad is not connected the one end of shank backup pad is rotated and is connected with the second slider, second slider sliding connection the bottom plate, its slip direction with the slip direction of drive plate is unanimous.
Further, the top surface of shank backup pad detachably installs the foam-rubber cushion.
Further, a restraint device for fixing the lower limb of the patient on the leg support plate is arranged on the leg support plate.
Further, the restraining device is a plurality of restraining belts which are arranged at intervals along the length direction of the supporting plate.
Further, an air bag assembly is arranged on the restraining device and detachably connected with an inflating device through an inflating tube, and the inflating device is electrically connected with the controller.
Compared with the prior art, the utility model has the following beneficial effects:
According to the utility model, through the transmission relation between the gear and the rack, the transmission plate is driven to move by the motor, so that the angle relation between the support rod and the bottom plate is changed, namely the support height of the support rod is changed, the angle between the support plate and the bottom plate is changed, and the purpose of adjusting the elevation of the lower limb of a patient is achieved. The utility model controls the driving of the motor through the data transmission among the controllers, has simple operation and can be automatically regulated by patients according to the self conditions. In addition, the support plate comprises the thigh support plate and the shank support plate, so that the thighs cannot be suspended when the lower limbs of a patient are lifted, and the comfort level of the patient can be enhanced.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a schematic perspective view of the base plate at a in fig. 1.
Fig. 3 is a front view of the support plate of the present utility model.
Description of the main reference signs
In the figure, the bottom plate is 1-, the transmission cavity is 12-, the operation screen is 13-, the second sliding block is 14-,
2-Leg support plate, 21-shank support plate, 22-thigh support plate, 23-restraint strap, 24-foam cushion, 25-inflation tube, 26-inflation device, 27-Japanese character buckle,
31-Driving plate, 32-rack, 33-gear, 34-supporting rod,
4-Sole supporting plate, 41-driving screw rod, 42-first sliding block, 43-sole connecting piece and 44-guide rod.
The utility model will be further described in the following detailed description in conjunction with the above-described figures.
Detailed Description
Referring to fig. 1-3, in a preferred embodiment of the present utility model, a lower limb lifting device includes a base plate 1 and a leg support plate 2 for supporting a lower limb of a patient, wherein the top of the base plate 1 is rotatably connected to one end of the leg support plate 2, the leg support plate 2 and the base plate 1 are in an angular relationship, an angle adjusting device for adjusting the angle between the leg support plate 2 and the base plate 1 is provided on the base plate 1, and when in use, the lower limb of the patient to be lifted is placed on the leg support plate 2, and then the angle adjusting device is adjusted to change the angle between the leg support plate 2 and the base plate 1, thereby achieving the purpose of adjusting the height of the lower limb lifting of the patient. Preferably, the leg support plate 2 is provided with a restraint device for fixing the lower limb of the patient on the leg support plate 2, and the lower limb of the patient can be restrained effectively through the action of the restraint device, so that the lower limb is prevented from moving to influence the treatment of the patient. In this embodiment, the restraining device is a plurality of restraining belts 23, the plurality of restraining belts 23 are arranged at intervals along the length direction of the leg support plate 2, and the plurality of restraining belts 23 can ensure the stability of restraint. In addition, in order to ensure the comfort of a patient, the top surface of the leg support plate 2 is detachably provided with the foam-rubber cushion 24, so that the lower limb of the patient is prevented from directly contacting the leg support plate 2, the comfort is stronger, and in addition, the support surface of the leg support plate 2 is in an arc groove structure, the support surface of the arc groove structure can limit the lower limb of the patient in the groove, accords with the physiological structure of the lower limb of a human body, and prevents the lower limb from sliding on the leg support plate 2.
More preferably, the restraint strap 23 is provided with an airbag module that is detachably connected to the inflator 25 through the inflation tube 24, and the inflator 25 is electrically connected to the controller. The air bag component is inflated or deflated by the data transmission control inflation device 25 among the controllers, so that the effect of massaging the lower limbs of the patient is achieved, and the fatigue of the patient is relieved. In this embodiment, one end of the restraint strap 23 is fixedly connected with the leg support plate 2, the other end is a movable end, the two sides of the leg support plate 2 in the width direction are both provided with a Chinese character 'ri' shaped buckle 27 for the restraint strap 23 to pass through, and the movable end of the restraint strap 23 is connected with the strap body of the restraint strap 23 through a magic tape. When the restraint belt 23 is used, the free end of the restraint belt 23 firstly passes through the bottom of the lower limb of a patient, then passes through the Chinese character 'ri' shaped buckle 27 positioned on one side of the leg support plate 2, extends from the top of the lower limb of the patient to the Chinese character 'ri' shaped buckle 27 on the other side, passes through the Chinese character 'ri' shaped buckle 27 on the other side and then is stuck through a magic tape, the operation of a nursing staff is facilitated by the magic tape structure, the labor intensity of the nursing staff is relieved, the lower limb of the patient can be better fixed in the mode, and the patient can be massaged by using the air bag component conveniently.
Further, the angle adjusting device comprises a transmission plate 31, a rack 32, a gear 33, a motor and a support rod 34, wherein the transmission plate 31 is slidably arranged on the bottom plate 1, the sliding direction is the length direction of the bottom plate 1, the rack 32 is arranged at the bottom of the transmission plate 31, the rack 32 is meshed with the gear 33, a transmission cavity 12 is formed in the bottom plate 1, the gear 33 and the rack 32 are arranged in the transmission cavity 12, the gear 33 is in transmission connection with an output shaft of the motor, the motor is electrically connected with a controller, the controller is electrically connected with a power module, one end of the support rod 34 is hinged with the transmission plate 31, the other end of the support rod is hinged with the leg support plate 2, and the hinged position of the other end of the support rod is not arranged at the rotation connecting end of the leg support plate 2 and the bottom plate 1. The driving of the motor is controlled through the data transmission between the controllers, and the transmission plate 31 is driven to move along the length direction of the bottom plate 1 under the driving of the motor, so that the angle relation between the support rods 34 and the bottom plate 1 is changed, namely the support height of the support rods 34 is changed, the angle between the leg support plates 2 and the bottom plate 1 is changed, and the purpose of adjusting the elevation of the lower limbs of a patient is achieved. The operation screen 13 is arranged on the bottom plate 1, the operation screen 13 is electrically connected with the controller, the control system is operated through the operation screen 13, the operation is simple, and a patient can adjust the control system according to the condition. Preferably, a driving plate 31 is located at the top of the driving chamber 12, and the driving plate 31 slides on top of the driving chamber 12. In addition, both sides in the width direction of the leg support plate 2 are provided with the support rods 34, and the leg support plate 2 is supported by the two support rods 34, so that the stability is stronger.
Further, the top side of the leg support plate 2 is slidably provided with a sole support plate 4 for supporting the sole, the sliding direction is the length direction of the leg support plate 2, and the sole of the patient is supported by the sole support plate 4. In the embodiment, the sliding of the sole support plate 4 is controlled by arranging the sole support plate 4 and the top surface of the leg support plate 2 at intervals, wherein the plate surface of the sole support plate 4 is perpendicular to the length direction of the leg support plate 2, the sole support plate 4 is arranged on the leg support plate 2 through a sliding driving assembly, the sliding driving assembly comprises a driving screw rod 41, a first sliding block 42 and a sole connecting piece 43, the driving screw rod 41 is rotatably arranged on the side wall of the leg support plate 2 in the width direction, the rod length direction of the driving screw rod is parallel to the length direction of the leg support plate 2, the driving screw rod 41 is connected with the first sliding block 42 in a threaded mode, the first sliding block 42 is in sliding connection with the leg support plate 2, and the first sliding block 42 is connected with the sole support plate 4 through the sole connecting piece 43. The first sliding block 42 is driven to move under the rotation of the driving screw 41, so that the sole supporting plate 4 is driven to slide along the length direction of the leg supporting plate 2, and therefore the position of the sole supporting plate 4 on the leg supporting plate 2 can be adjusted according to the length of the leg of a patient, and the sole supporting plate 4 is ensured to play a supporting role on the foot of the patient. In addition, the sliding driving assembly further comprises a guide rod 44, the guide rod 44 is mounted on a side wall of the leg support plate 2 in the width direction, the side wall is not the same with the side wall where the driving screw 41 is located, the rod length direction of the guide rod 44 is parallel to the rod length direction of the driving screw 41, a first sliding block 42 is also mounted on the guide rod 44 in a sliding manner, the first sliding block 42 is also connected with the sole support plate 4 through a sole connecting piece 43, and the stability of the sole support plate 4 during sliding can be ensured through the action of the guide rod 44.
Preferably, the leg support plate 2 includes a shank support plate 21 and a thigh support plate 22, the sole support plate 4 is positioned on the shank support plate 21, the shank support plate 21 is hinged with a support rod 34, one end of the support rod is rotatably connected with the bottom plate 1, the other end is rotatably connected with the thigh support plate 22, one end of the thigh support plate 22, which is not connected with the shank support plate 21, is rotatably connected with the second slide block 14, the second slide block 14 is slidably connected with the bottom plate 1, and the sliding direction of the second slide block is consistent with the sliding direction of the transmission plate 31. The angle between the thigh support plate 22 and the bottom plate 1 changes along with the angle between the shank support plate 21 and the bottom plate 1, and under the combined action of the shank support plate 21 and the thigh support plate 22, the thigh can not hang when guaranteeing that the patient lifts the lower limb, and the comfort level of the patient can be enhanced.
The foregoing description is directed to the preferred embodiments of the present utility model, but the embodiments are not intended to limit the scope of the utility model, and all equivalent changes or modifications made under the technical spirit of the present utility model should be construed to fall within the scope of the present utility model.
Claims (10)
1. The lower limb lifting device comprises a bottom plate and a leg supporting plate for supporting lower limbs of a patient, and is characterized in that the top of the bottom plate is rotationally connected with one end of the supporting plate, the leg supporting plate and the bottom plate are in an angle relation, an angle adjusting device for adjusting the angle between the leg supporting plate and the bottom plate is arranged on the bottom plate, the angle adjusting device comprises a transmission plate, a rack, a gear, a motor and a supporting rod, the transmission plate is slidingly arranged on the bottom plate, the sliding direction is the length direction of the bottom plate, the rack is arranged at the bottom of the transmission plate, the rack is meshed with the gear, a transmission cavity is formed in the bottom plate, the gear and the rack are arranged in the transmission cavity, the gear is in transmission connection with an output shaft of the motor, the motor is electrically connected with a controller, the controller is also electrically connected with a power module, one end of the supporting rod is hinged with the transmission plate, the other end of the supporting rod is hinged with the leg supporting plate, the hinged joint of the other end is not arranged at the rotary connecting end of the leg supporting plate and the bottom plate, the top of the leg supporting plate is slidingly arranged on the top of the leg supporting plate, and the leg supporting plate is in the length direction of the leg supporting plate.
2. The lower limb lifting device according to claim 1, wherein the sole support plate is arranged at intervals from the top surface of the leg support plate, the plate surface of the sole support plate is perpendicular to the length direction of the leg support plate, the sole support plate is mounted on the leg support plate through a sliding drive assembly, the sliding drive assembly comprises a drive screw, a first slider and a sole connecting piece, the drive screw is rotatably arranged on the side wall of the width direction of the leg support plate, the rod length direction of the drive screw is parallel to the length direction of the leg support plate, the drive screw is in threaded connection with the first slider, the first slider is in sliding connection with the leg support plate, and the first slider is connected with the sole support plate through the sole connecting piece.
3. A lower limb raising device according to claim 2, wherein the sliding driving assembly further comprises a guide bar mounted on a side wall of the leg support plate in the width direction, the side wall being different from the side wall on which the driving screw is mounted, the bar length direction of the guide bar being parallel to the bar length direction of the driving screw, and a first slider being slidably mounted on the guide bar, the first slider being connected to the sole support plate via a sole connector.
4. A lower limb elevation apparatus according to claim 1, wherein the drive plate is located at the top of the drive chamber.
5. A lower limb raising device according to claim 1, wherein the support bars are provided on both sides in the width direction of the leg support plate.
6. A lower limb lifting device according to claim 1, wherein the leg support plate comprises a shank support plate and a thigh support plate, the sole support plate is positioned on the shank support plate, the shank support plate is hinged with a support rod, one end of the shank support plate is rotatably connected with the bottom plate, the other end of the shank support plate is rotatably connected with the thigh support plate, one end of the thigh support plate, which is not connected with the shank support plate, is rotatably connected with a second slide block, the second slide block is slidably connected with the bottom plate, and the sliding direction of the second slide block is consistent with that of the transmission plate.
7. A lower limb elevation apparatus according to claim 1, wherein the top surface of the leg support plate is detachably mounted with a sponge pad.
8. A lower limb elevation apparatus according to claim 1, wherein the leg support plate is provided with restraining means for securing a patient's lower limb to the leg support plate.
9. A lower limb elevation apparatus according to claim 8, wherein the restraint means is a plurality of restraint straps spaced apart along the length of the support plate.
10. A lower limb elevation apparatus according to claim 9, wherein the restraint strap is provided with an air bladder assembly, the air bladder assembly being removably connected to an inflatable device via an inflation tube, the inflatable device being electrically connected to the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420934447.5U CN222341488U (en) | 2024-04-30 | 2024-04-30 | Lower limb lifting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420934447.5U CN222341488U (en) | 2024-04-30 | 2024-04-30 | Lower limb lifting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222341488U true CN222341488U (en) | 2025-01-14 |
Family
ID=94206487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420934447.5U Active CN222341488U (en) | 2024-04-30 | 2024-04-30 | Lower limb lifting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222341488U (en) |
-
2024
- 2024-04-30 CN CN202420934447.5U patent/CN222341488U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107224389A (en) | Patients with cerebral apoplexy device for healing and training with anti-spasm, preventing thrombosis function | |
| CN103505341A (en) | Cervical and lumbar vertebra traction bed | |
| CN109620508B (en) | Bone traction device | |
| CN108836655B (en) | Safe wheelchair with nursing function for orthopedic patients | |
| CN211535402U (en) | Auxiliary traction device for orthopedics department | |
| CN222341488U (en) | Lower limb lifting device | |
| CN119837686B (en) | Orthopedic traction device | |
| CN221106319U (en) | Novel nursing bracket | |
| CN113499196A (en) | Orthopedic department is with supplementary bandage winding sick bed of shank fracture | |
| CN221308646U (en) | Nursing bed for turning over | |
| CN210582784U (en) | Traction bed with auxiliary turning-over function | |
| CN112353628A (en) | Orthopedic spine correction massage device with far infrared treatment function | |
| CN108524195B (en) | Orthopedics rehabilitation device | |
| CN116509667A (en) | Medical patient prone position auxiliary ventilation equipment | |
| CN216168486U (en) | A hyperbaric oxygen chamber system | |
| CN207412275U (en) | A kind of bone distraction apparatus equipped with rotating massage pad | |
| CN112022625B (en) | Massage device is tempered to low limbs function | |
| CN213047536U (en) | Bracket is corrected to crooked gypsum of backbone | |
| CN111544281B (en) | Multi-functional bone fracture healing protection nursing device | |
| CN211485516U (en) | Device for preventing deep venous thrombosis of lower limbs | |
| CN212038137U (en) | Shoulder and hand injury treatment bed | |
| CN209301610U (en) | Liftable spine treatment bed | |
| CN115089438A (en) | Cesarean section postoperative recovery device | |
| CN217938583U (en) | Auxiliary limb adjuster for nursing of lying-in woman | |
| CN113693868A (en) | Standing type external counterpulsation treatment equipment and use method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |