CN112155882A - Multifunctional leg supporting device - Google Patents
Multifunctional leg supporting device Download PDFInfo
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- CN112155882A CN112155882A CN202011136686.9A CN202011136686A CN112155882A CN 112155882 A CN112155882 A CN 112155882A CN 202011136686 A CN202011136686 A CN 202011136686A CN 112155882 A CN112155882 A CN 112155882A
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- supporting
- rod
- supporting plate
- adjusting mechanism
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—Parts, details or accessories
- A61G5/12—Rests specially adapted therefor, e.g. for the head or the feet
- A61G5/127—Rests specially adapted therefor, e.g. for the head or the feet for lower legs
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
- A61F5/01—Orthopaedic devices, e.g. splints, casts or braces
- A61F5/04—Devices for stretching or reducing fractured limbs; Devices for distractions; Splints
- A61F5/05—Devices for stretching or reducing fractured limbs; Devices for distractions; Splints for immobilising
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—Parts, details or accessories
- A61G5/12—Rests specially adapted therefor, e.g. for the head or the feet
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Engineering & Computer Science (AREA)
- Vascular Medicine (AREA)
- Heart & Thoracic Surgery (AREA)
- Biomedical Technology (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Nursing (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Rehabilitation Tools (AREA)
Abstract
The invention discloses a multifunctional leg supporting device which comprises a supporting plate, a top angle adjusting mechanism, a supporting rod, a middle height adjusting mechanism and a multi-effect bottom fixing mechanism, wherein the supporting plate is arranged on the top of the supporting plate; the top angle adjusting mechanism is connected below the supporting plate and comprises a rack, a gear transmission assembly and a limiting and fixing assembly, the rack is arranged below the supporting plate and can rotate relative to the supporting plate under the action of the gear transmission assembly, and the limiting and fixing assembly is arranged below the gear transmission assembly; the supporting rod is connected with the rack and the multi-effect bottom fixing mechanism and comprises a supporting main rod and a supporting auxiliary rod, the supporting auxiliary rod is sleeved inside the supporting main rod in a matching mode, and the supporting main rod and the supporting auxiliary rod are relatively fixed through a middle height adjusting mechanism; the multi-effect bottom mounting mechanism includes a combination spring clip and a plurality of flat ground supports. The device's simple structure, it is convenient to use, and it can use in different use occasions, and the angle and the height that the shank supported can freely change in the use, and the flexibility is strong.
Description
Technical Field
The invention relates to auxiliary supporting equipment, in particular to a multifunctional leg supporting device which can be used as an accessory product of a common wheelchair (without a leg supporting device) and can also be used as a leg supporting frame for independent use.
Background
In recent years, trauma caused by traffic accidents is increased, fracture caused by senile osteoporosis and osteological arthropathy patients are also increased along with the aging of population, and the treatment of leg diseases is increased due to the influence of environmental factors. Based on this situation, in order to help the leg patients to better recover, treat and perform daily activities, it is extremely important to properly fix and place the lesion or the injured part. For example, after the reduction of leg fracture or the reconstruction of ligament, the injured part is unstable and easily displaced, so that it needs to be fixed in a proper position by adopting different methods or devices so as to gradually and stably heal the corresponding part. Therefore, a leg fixation device that is used to assist in fixation during reduction and healing, providing a good environment for the patient's leg recovery, would play a crucial role. Meanwhile, the good supporting structure also has the advantages of promoting the healing speed and quality, relieving the pain of the wounded, preventing secondary injury and the like.
Disclosure of Invention
The invention aims to provide a multifunctional leg supporting device which is simple in structure and convenient and fast to use, can be applied to different occasions, and can be used as an accessory product of a common wheelchair (without a leg supporting device) due to the characteristic of convenient disassembly, thereby expanding the functions of the common wheelchair and reducing the cost of a patient for purchasing the multifunctional wheelchair; but also can be used alone as a support frame in the place without a wheelchair, and has strong flexibility.
The invention is realized by the following steps: a multifunctional leg supporting device comprises a supporting plate, a top angle adjusting mechanism, a supporting rod, a middle height adjusting mechanism and a multi-effect bottom fixing mechanism; the top angle adjusting mechanism is connected below the supporting plate and comprises a rack, a gear transmission assembly and a limiting and fixing assembly, the rack is arranged below the supporting plate and can rotate relative to the supporting plate under the action of the gear transmission assembly, and the limiting and fixing assembly is arranged below the gear transmission assembly; the supporting rod comprises a supporting main rod and a supporting auxiliary rod, a movable cavity axially penetrating the supporting main rod is arranged at the top of the supporting main rod, one end of the supporting auxiliary rod is sleeved in the supporting main rod in a matching mode along the axial movable cavity, the other end of the supporting auxiliary rod is fixed on the bottom surface of the rack, and the supporting main rod and the supporting auxiliary rod are relatively fixed through a middle height adjusting mechanism; the multi-effect bottom fixing mechanism comprises a combined spring clamp and a plurality of flat ground supporting pieces, the flat ground supporting pieces are symmetrically distributed at the top of the combined spring clamp, and the middle positions of the front surface and the back surface of the combined spring clamp are respectively provided with a joggle groove capable of joggling with the bottom of the supporting main rod.
Furthermore, the gear transmission assembly comprises a driving gear and a driven gear which are meshed with each other, the driven gear is of a half-wheel structure, the middle part of the driven gear is coaxially connected with a driven gear shaft, the driven gear is fixedly connected to the bottom of one end of the supporting plate, and two ends of the driven gear shaft are respectively in clearance fit connection with lifting lugs on one corresponding side of the bottom of the supporting plate; the support columns on the two sides of the rack are rotatably hinged to the driven gear shaft; the driving gear is arranged below the driven gear, two ends of a driving gear shaft which is coaxially connected with the middle of the driving gear are movably sleeved in shaft holes which are symmetrically arranged on the rack and matched with each other, and two ends of the driving gear shaft are respectively and coaxially fixed with a disc.
Furthermore, the limiting fixing assembly comprises a first movable cavity and a cylindrical bolt, the first movable cavity is transversely arranged below the driving gear shaft, the cylindrical bolt is sleeved in the first movable cavity in a penetrating mode, and the cylindrical bolt is pushed inwards and can be clamped in a tooth groove of the driving gear.
Further, middle part height adjusting mechanism includes cam and buckle, is equipped with the several cam along axial equidistance on supporting the auxiliary rod, is equipped with the screw rod that has four arc fasteners at the support mobile jib top, and the buckle is connected with the cam, is equipped with the thread groove with the screw rod adaptation in the buckle inboard.
Furthermore, the combined spring clamp consists of a spring clamp main part and a spring clamp auxiliary part, the spring clamp auxiliary part extends and retracts along the double-movable cavity on the spring clamp main part, and the double-movable cavity is internally provided with an extension spring.
Furthermore, the flat ground supporting piece comprises a flat ground supporting main piece and a flat ground supporting auxiliary piece, one end of the flat ground supporting main piece is hinged to the top surface of the spring clamp main piece, a movable cavity is arranged in the other end of the flat ground supporting main piece, and the flat ground supporting auxiliary piece is connected in the movable cavity of the flat ground supporting main piece in a sliding mode and can slide along the movable cavity.
Furthermore, the upper part of the supporting plate is an inwards concave curved surface.
Furthermore, a hand wheel is arranged in the hole on the outer side surface of the disc.
Has the advantages that:
1. the multifunctional leg supporting device disclosed by the invention is simple in structure and convenient and fast to operate, can be used by being combined with a common wheelchair (without a leg supporting device), can be used independently when being supported on flat ground, and is strong in flexibility;
2. the leg supporting device can be used as an external accessory of a common wheelchair to be combined, so that the functions of the common wheelchair are expanded, and the cost of a patient for purchasing a multifunctional wheelchair with high price can be reduced; the patient can also independently adjust the fixed position of the wheelchair according to the self requirement, so that the patient can conveniently find a more comfortable optimal position, and the personalized degree is obviously improved;
3. the leg supporting device disclosed by the invention is provided with the top angle adjusting mechanism and the middle height adjusting mechanism, so that the angle and the height of the leg support can be freely changed in the using process, and the individual requirements of different patients are met;
4. the bottom of the leg supporting device disclosed by the invention adopts a detachable structure, and the spring clamp and the flat ground supporting component are added, so that the overall stability is ensured, and the practical requirements of different places are met.
Drawings
FIG. 1 is a schematic structural view of a multi-functional leg support;
FIG. 2 is a schematic structural view of a top angle adjustment mechanism;
FIG. 3 is a schematic structural view of a spacing and fixing assembly;
FIG. 4 is a schematic structural view of the support rod;
FIG. 5 is a schematic structural view of a multi-effect bottom mounting mechanism;
fig. 6 is a schematic structural view of the multi-effect bottom fixing mechanism in a flat ground use state.
Wherein, 1-a support plate, 2-a top angle adjusting mechanism, 3-a support rod, 4-a middle height adjusting mechanism and 5-a multi-effect bottom fixing mechanism;
11-a lifting lug;
21-a frame, 22-a gear transmission assembly and 23-a limiting and fixing assembly;
211-support column;
221-driving gear, 222-driven gear, 223-driven gear shaft, 224-driving gear shaft, 225-disc, 226-hand wheel;
231-movable cavity one, 232-cylindrical bolt;
31-supporting a main rod, 32-supporting an auxiliary rod;
41-fastener, 42-screw;
51-combined spring clip, 52-flat ground support;
511-spring clamp main part, 512-spring clamp auxiliary part;
521-support the main part flatly and 522-support the secondary part flatly.
Detailed Description
The following detailed description of the preferred embodiments of the present invention is provided to enable those skilled in the art to more readily understand the advantages and features of the present invention, and to clearly and unequivocally define the scope of the present invention.
In order to better help the disabled with legs to perform rehabilitation, treatment and assist in completing daily activities, the present embodiment provides a multifunctional leg supporting device, which comprises a supporting plate 1, a top angle adjusting mechanism 2, a supporting rod 3, a middle height adjusting mechanism 4 and a multi-effect bottom fixing mechanism 5.
Top angle adjustment mechanism 2 connects in backup pad 1 below, mainly includes frame 21, gear drive subassembly 22 and spacing fixed subassembly 23, and frame 21 establishes in backup pad 1 below and can rotate relative to backup pad 1 under gear drive subassembly 22's effect, and spacing fixed subassembly 23 establishes and is used for restricting the transmission of gear drive subassembly 22 in gear drive subassembly 22 below.
The gear transmission assembly 22 comprises a driving gear 221 and a driven gear 222 which are meshed with each other, the driven gear 222 is of a half-wheel structure, the middle part of the driven gear 222 is coaxially connected with a driven gear shaft 223, the driven gear 222 is fixedly connected to the bottom of one end of the support plate 1, and two ends of the driven gear shaft 223 are respectively in clearance fit connection with the lifting lugs 11 on the corresponding side of the bottom of the support plate 1; the supporting columns 211 at the two sides of the rack 21 are rotatably hinged to the driven gear shaft 223, and the outer side surfaces of the supporting columns 211 are in contact with the inner side surfaces of the lifting lugs 11 at the corresponding side, so that the rack 21 is prevented from moving transversely on the driven gear shaft 223; the driving gear 221 is arranged below the driven gear 222, two ends of a driving gear shaft 224 coaxially connected with the middle of the driving gear 221 are movably sleeved in matched shaft holes symmetrically arranged on the rack 21, and two ends of the driving gear shaft 224 are respectively and coaxially fixed with a disc 225; the limiting and fixing assembly 23 comprises a first movable cavity 231 and a cylindrical bolt 232, the first movable cavity 213 is transversely arranged below the driving gear shaft 224, the cylindrical bolt 232 is sleeved in the first movable cavity 231 in a penetrating mode, and the cylindrical bolt 232 is pushed inwards and can be clamped in a tooth groove of the driving gear 221 to limit rotation of the driving gear 221.
In order to facilitate the hand to rotate the disc 225 and realize the adjustment of the whole angle of the supporting plate 1, a hand wheel 226 is installed in a hole on the outer side surface of the disc 225.
For the human shank curve of laminating, bear the shank better, the top of backup pad 1 is the curved surface of indent.
The support rod 3 comprises a support main rod 31 and a support auxiliary rod 32, the top of the support main rod 31 is provided with a movable cavity axially penetrating the support main rod 31, one end of the support auxiliary rod 32 is sleeved inside the support main rod 31 along the axial movable cavity, the other end of the support auxiliary rod is fixed on the bottom surface of the frame 21, and the support main rod 31 and the support auxiliary rod 32 are relatively fixed through a middle height adjusting mechanism 4.
The middle height adjusting mechanism 4 comprises cams and buckles 41, 20 cams are arranged on the supporting auxiliary rod 32 at equal intervals along the axial direction, a screw rod 42 with four arc-shaped fasteners is arranged at the top of the supporting main rod 31, the buckles 41 are connected with the cams, thread grooves matched with the screw rod 42 are formed in the inner sides of the buckles 41, the buckles 41 are screwed in according to threads, the supporting auxiliary rod 32 can be fixed at any height, and therefore the function of changing the height of the supporting plate 1 is achieved.
The multi-effect bottom fixing mechanism 5 comprises a combined spring clamp 51 and four flat ground supporting pieces 52, wherein the four flat ground supporting pieces 52 are symmetrically distributed at the top of the combined spring clamp 51, and a mortise capable of being in mortise joint with the bottom of the supporting main rod 31 is respectively arranged in the middle positions of the front surface and the back surface of the combined spring clamp 51.
The combined spring clamp 51 consists of a spring clamp main part 511 and a spring clamp auxiliary part 512, wherein the spring clamp auxiliary part 512 extends along the double movable cavities on the spring clamp main part 511 to realize the width adjustment of the spring clamp, and extension springs are arranged in the double movable cavities.
In order to enhance the stability in the using process, the wave-shaped textures are arranged in the double movable cavities, the ESM 2.1 multiplied by 17 multiplied by 60 multiplied by 14.5 English hook carbon steel spring is used in a matched mode, the limit tension can reach 140N, the disassembly is convenient, and the stability is guaranteed.
The flat ground support member 52 comprises a flat ground support main member 521 and a flat ground support sub-member 522, wherein one end of the flat ground support main member 521 is hinged on the top surface of the spring clamp main member 511, a movable cavity is arranged in the other end of the flat ground support main member 521, and the flat ground support sub-member 522 is slidably connected in and can slide along the movable cavity of the flat ground support main member 521.
The specific working principle of the leg supporting device is as follows:
when it is desired to remove/install the device from the wheelchair, the secondary spring clip member 512 can be pulled open relative to the primary spring clip member 511 to release/clamp the wheelchair footrest, and then the leg support can be removed/installed from the wheelchair. When the device is used on the flat ground, the combined spring clamp 51 is just required to be overturned and then is joggled and fixed with the main support rod 31, at the moment, the four flat ground support pieces 52 on the combined spring clamp are in contact with the ground, the flat ground support pieces 52 are outwards rotated and opened as shown in figure 6, and the flat ground support auxiliary pieces 522 in the flat ground support main piece 521 slide out, so that the device can be changed into a base for supporting the flat ground, and the base is radial and has stronger stability.
The leg supporting device is designed for patients with diseases or pains on legs, the legs and the device do not need to be bound and fixed, and the use process is more flexible. The supporting plate 1 is provided with an arc-shaped inner surface which is attached to the leg of the patient, so that the leg cannot move downwards, leftwards and rightwards, and the leg can move upwards to bring convenience for the patient to take out the leg.
When the leg angle needs to be adjusted, firstly, the cylindrical bolt 232 is pulled out outwards to avoid position interference when the cylindrical bolt and the driving gear 221 rotate, then two hands rotate the hand wheels 226 on the corresponding side discs 225 in the same direction, the discs 225 are driven to rotate to increase the force arm, a user can rotate the driving gear shaft 223 in a more convenient mode, the driving gear 221 rotates to drive the driven gear 222 which is meshed with the driving gear to rotate, further, the supporting plate 1 fixed with the driving gear 221 rotates at a certain angle, after the supporting plate 1 is adjusted to a proper angle, the cylindrical bolt 232 is inwards inserted into the gear groove of the driving gear 221 to limit the rotation of the driving gear 221, and therefore the angle of the supporting plate 1 is fixed.
If the height needs to be adjusted, the buckle 41 can be loosened, the support auxiliary rod 32 can be moved away from/close to the combined spring clamp 51, the buckle 41 can be screwed on the screw rod 42 after the height is adjusted to a proper height, and the height of the support rod 3 can be adjusted.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. A multifunctional leg supporting device is characterized by comprising a supporting plate (1), a top angle adjusting mechanism (2), a supporting rod (3), a middle height adjusting mechanism (4) and a multi-effect bottom fixing mechanism (5); the top angle adjusting mechanism (2) is connected below the supporting plate (1) and comprises a rack (21), a gear transmission assembly (22) and a limiting fixing assembly (23), the rack (21) is arranged below the supporting plate (1) and can rotate relative to the supporting plate (1) under the action of the gear transmission assembly (22), and the limiting fixing assembly (23) is arranged below the gear transmission assembly (22); the supporting rod (3) comprises a supporting main rod (31) and a supporting auxiliary rod (32), a movable cavity axially penetrating the supporting main rod (31) is formed in the top of the supporting main rod, one end of the supporting auxiliary rod (32) is sleeved in the supporting main rod (31) in a matching mode along the axial movable cavity, the other end of the supporting auxiliary rod is fixed to the bottom surface of the rack (21), and the supporting main rod (31) and the supporting auxiliary rod (32) are relatively fixed through a middle height adjusting mechanism (4);
the multi-effect bottom fixing mechanism (5) comprises a combined spring clamp (51) and a plurality of flat ground supporting pieces (52), wherein the flat ground supporting pieces (52) are symmetrically distributed at the top of the combined spring clamp (51), and a joggle groove capable of joggling with the bottom of the supporting main rod (31) is formed in the middle of the front surface and the back surface of the combined spring clamp (51).
2. The multifunctional leg supporting device as claimed in claim 1, wherein the gear transmission assembly (22) comprises a driving gear (221) and a driven gear (222) which are engaged with each other, the driven gear (222) is a half-wheel structure, a driven gear shaft (223) is coaxially connected to the middle of the driven gear (222), the driven gear (222) is fixedly connected to the bottom position of one end of the supporting plate (1), and two ends of the driven gear shaft (223) are respectively in clearance fit connection with the lifting lugs (11) on the corresponding side of the bottom of the supporting plate (1); the supporting columns (211) at the two sides of the frame (21) are rotatably hinged on the driven gear shaft (223); the driving gear (221) is arranged below the driven gear (222), two ends of a driving gear shaft (224) which is coaxially connected with the middle of the driving gear (221) penetrate through and are sleeved in shaft holes which are symmetrically arranged on the rack (21) and matched with each other, and two ends of the driving gear shaft (224) are respectively and coaxially fixed with a disc (225).
3. A multi-functional leg supporting device as claimed in claim 2, wherein said position-limiting fixing member (23) comprises a first movable cavity (231) and a cylindrical pin (232), the first movable cavity (213) is transversely disposed below the driving gear shaft (224), the cylindrical pin (232) is inserted into the first movable cavity (231), and the cylindrical pin (232) is pushed inward to be fastened in the tooth space of the driving gear (221).
4. The multifunctional leg supporting device as claimed in claim 1, wherein the middle height adjusting mechanism (4) comprises a cam and a buckle (41), a plurality of cams are provided on the auxiliary supporting rod (32) along the axial direction at equal intervals, a screw rod (42) with four arc-shaped fasteners is provided on the top of the main supporting rod (31), the buckle (41) is connected with the cam, and a thread groove adapted to the screw rod (42) is provided on the inner side of the buckle (41).
5. A multi-functional leg support according to claim 1, characterized in that the combined spring clip (51) is composed of a main spring clip part (511) and a secondary spring clip part (512), the secondary spring clip part (512) extends and contracts along the double active chambers of the main spring clip part (511), and both the double active chambers are provided with extension springs.
6. The multi-functional leg supporting device according to claim 5, wherein the flat supporting member (52) comprises a flat supporting main member (521) and a flat supporting sub-member (522), one end of the flat supporting main member (521) is hinged to the top surface of the spring clamp main member (511), the other end is provided with a movable cavity therein, and the flat supporting sub-member (522) is slidably connected in and slidable along the movable cavity of the flat supporting main member (521).
7. A multi-functional leg support according to claim 1, wherein the upper side of the support plate (1) is concavely curved.
8. A multi-functional leg support according to claim 2, wherein a hand wheel (226) is mounted in a hole in the outer surface of the disc (225).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011136686.9A CN112155882B (en) | 2020-10-22 | 2020-10-22 | Multifunctional leg supporting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011136686.9A CN112155882B (en) | 2020-10-22 | 2020-10-22 | Multifunctional leg supporting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112155882A true CN112155882A (en) | 2021-01-01 |
| CN112155882B CN112155882B (en) | 2022-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011136686.9A Active CN112155882B (en) | 2020-10-22 | 2020-10-22 | Multifunctional leg supporting device |
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| CN (1) | CN112155882B (en) |
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| CN210750558U (en) * | 2019-07-10 | 2020-06-16 | 李得祥 | Debridement device for general surgery department |
| CN210673608U (en) * | 2019-07-22 | 2020-06-05 | 江阴市中医院 | Detachable wheelchair lower limb support |
| CN211382358U (en) * | 2019-12-04 | 2020-09-01 | 宋永娟 | Orthopedic nursing support |
| CN211583970U (en) * | 2020-02-03 | 2020-09-29 | 王鹏 | Clinical shank strutting arrangement of skeleton |
| CN111631892A (en) * | 2020-05-15 | 2020-09-08 | 蒋晓瑜 | Craniotomy operating table |
| CN111544281A (en) * | 2020-05-21 | 2020-08-18 | 成都市第八人民医院(成都市慢性病医院、成都市老年服务示训中心) | Multi-functional bone fracture healing protection nursing device |
| CN111714319A (en) * | 2020-06-24 | 2020-09-29 | 日照市中医医院 | Clinical operation eyelidretractor of neurosurgery |
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