CN104414831A - Safe walking aid and mounting and use method thereof - Google Patents
Safe walking aid and mounting and use method thereof Download PDFInfo
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- CN104414831A CN104414831A CN201310371481.2A CN201310371481A CN104414831A CN 104414831 A CN104414831 A CN 104414831A CN 201310371481 A CN201310371481 A CN 201310371481A CN 104414831 A CN104414831 A CN 104414831A
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- frame
- walking aid
- castor
- support frame
- leg
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 235000004443 Ricinus communis Nutrition 0.000 claims description 57
- 210000002414 leg Anatomy 0.000 claims description 46
- 230000037396 body weight Effects 0.000 claims description 16
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 11
- 240000000528 Ricinus communis Species 0.000 claims description 9
- 210000001217 buttock Anatomy 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 6
- 230000004308 accommodation Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000000474 nursing effect Effects 0.000 abstract description 8
- 239000003381 stabilizer Substances 0.000 abstract 1
- 239000004411 aluminium Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 208000006011 Stroke Diseases 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000002651 drug therapy Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000009182 swimming Effects 0.000 description 1
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- Rehabilitation Tools (AREA)
Abstract
The invention relates to a safe walking aid and a mounting and use method thereof. The safe walking aid is characterized by comprising a supporting framework of which leg parts are provided with at least three trundles, wherein a connection opening communicated with an air pressure stabilizer is formed in the supporting framework, so that normal pressure in a hollow cavity of the whole supporting framework is guaranteed; push rods extending into leg part bodies of the supporting framework are arranged above brackets of the trundles; pistons capable of sliding in hollow cavities of the leg parts of the supporting framework are arranged at the upper ends of the push rods; a binding band for supporting the waist or the hip of a user is arranged on the supporting framework; brake rods are arranged at the leg parts of the supporting framework; the positions of the lowermost ends of the brake rods are lower than or flush with the bottom ends of the trundles in a compressed state, and the positions of the lowermost ends of the brake rods are higher than the bottom ends of the trundles in an extending state. In the whole use process of the safe walking aid, the user can do self-walking and exercises only after a nurse helps the user to bind and fix the binding band, and extra personnel is not needed for companying, so that the use is greatly facilitated, and the nursing expense is reduced.
Description
technical field:
The present invention relates to a kind of safe walking aid and installation thereof and using method.
background technology:
The stroke patient of a current part is by the Drug therapy of a period of time, need to carry out some rehabilitations, in rehabilitation, temper walking is a very important project, at present in order to prevent falling down of in walking exercise routine patient, usually all need a nursing staff to accompany, considerably increase nursing staff like this, add nurse fees use.
summary of the invention:
The object of the present invention is to provide a kind of safe walking aid, this safe walk-assisting device structure is simple, reasonable in design, without the need to patient's the accompanying of nursing staff when step exercises, greatly facilitates the step exercises of patient; Safe walking aid installation and using method conveniently, are conducive to people's operation.
The safe walking aid of the present invention, it is characterized in that: comprise the support frame that leg is provided with at least three castors, described support frame is provided with the interface that is connected with pressurization by compressed air device to ensure the normal pressure in whole support frame hollow cavity, be provided with the push rod stretched in support frame leg body above the support of castor, described push rod upper end is provided with can the piston of slippage in described support frame leg hollow cavity; Described support frame is provided with the bandage for being supported on user waist or buttocks, brake lever is provided with at support frame leg, described brake lever lowest positions lower than or flush in the castor bottom of compressive state, and brake lever lowest positions is higher than the bottom of extended configuration castor.
By two groups, independently shaped as frame frame side and the support tubes be supported between two shaped as frame frame side are formed above-mentioned support frame, the described leg often organizing shaped as frame frame side is separately installed with two castors, described shaped as frame frame side is bent by the gastight hollow pipe fitting of whole and forms, and namely pipe fitting two ends defines the leg of support frame.
Above-mentioned pressurization by compressed air device connects access interface after two arms, to realize the normal pressure in whole support frame hollow cavity by a house steward.
The air pressure of above-mentioned pressurization by compressed air device exports adjustable, and the range of accommodation of its delivery air pressure is between 0.1-2.5 thousand grams/cm.
Above-mentioned brake lever one end is hinged on support frame leg, and the other end is provided with cushion, and the support of described castor is provided with the guide groove slided in order to brake lever guiding.
The upper opposite side in brake lever of above-mentioned support frame leg is provided with quarter butt, and described quarter butt is provided with two protruding pins, described brake lever is hinged with a cramp, and described cramp is provided with the hole slot that can buckle into protruding pin.
Above-mentioned support frame leg is provided with cylinder, and piston and push rod slide in this cylinder, and brake lever is also arranged on this cylinder bottom.
Support frame described above is independently that " several " font aluminum shaped as frame frame side and the aluminum support tubes be supported between two shaped as frame frame side are formed by two groups, described shaped as frame frame side is bent by the gastight hollow pipe fitting of whole and forms, namely pipe fitting two ends defines the leg of support frame, the leg often organizing shaped as frame frame side respectively seamless welding have cylinder, in cylinder lower body, be provided with piston and push rod, push rod lower end is connected with castor.
Above-mentioned support tubes end has slotted eye, and described shaped as frame frame side upper and lower correspondence is provided with projection piece to coordinate with slotted eye.
The assembling of the safe walking aid of the present invention and using method, is characterized in that: during installation, first first between two groups of aluminum shaped as frame frame side, fixes two support tubes, at seam access pressurization by compressed air device and gas transmission pipe fitting thereof, during use, user ties up bandage at its waist or buttocks, user moves into the center of support frame, other for bandage one is connected and fixed on the support frame, now can use, user both hands are supported on the top of support frame, by moving of both hands and both legs, realize the step exercises of user, owing to being filled with compressed air in shaped as frame frame side and cylinder block, it is made to promote piston and push rod, push rod supported foot is taken turns, support castor and be in extended configuration, four support castors can the body weight of support human body 20-40%, when user tempers walking, under normal condition, user foot support most body weight (60-80% of percentage of liveweight), the user hand power acted on walking aid is about the body weight of 20-40%, now, although compressed although the push rod of castor connection and piston have, when decrement is little, brake lever lowest positions is higher than the castor bottom of this state, castor can normally roll, when user leg power forms crouching ground posture not, user makes whole body weight act on walking aid by bandage, now, air in shaped as frame frame side and cylinder block is less than user body weight to the thrust of piston, push rod and castor, castor is in confined state, brake lever lowest positions lower than or flush in the castor bottom of compressive state, namely brake lever contacts with bottom surface bottom, and namely walking aid cannot slide.
The safe walking aid of the present invention only nursing staff need be had to help to tie up in whole use procedure and after fixing bandage, user gets final product oneself and carries out step exercises, personnel need not accompany in addition, greatly facilitate use, decreases nursing and pays wages.
accompanying drawing illustrates:
Fig. 1 is organigram of the present invention (wherein having removed bandage);
Fig. 2 is main apparent structure schematic diagram of the present invention;
Fig. 3 is the profile that the castor of walking aid leg of the present invention is in extended configuration;
Fig. 4 is the profile that the castor of walking aid leg of the present invention is in compressive state;
Fig. 5 is the A-A profile of Fig. 3;
Fig. 6 is the B-B profile of Fig. 3.
detailed description of the invention:
The safe walking aid of the present invention, comprise the support frame 1 that leg is provided with at least three castors, described support frame 1 is provided with the interface 2 that is connected with pressurization by compressed air device K to ensure the normal pressure in whole support frame hollow cavity, be provided with the push rod 4 stretched in support frame leg body above the support of castor 3, described push rod 4 upper end is provided with can the piston 5 of slippage in described support frame leg hollow cavity; Described support frame 1 is provided with the bandage 6 for being supported on user waist or buttocks, brake lever 7 is provided with at support frame leg 8, described brake lever 7 lowest positions lower than or flush in the castor bottom of compressive state, and brake lever lowest positions is higher than the bottom of extended configuration castor.
When user hand support is on walking aid, castor can by certain compression, but this decrement also fails to allow castor bottom and brake lever 7 lowest positions flush in, and therefore in the drive of castor, walking aid is also in slidably state; When user leg power is inadequate, in squat state time, the body weight of user passes to support frame by bandage, castor is further compressed, make brake lever 7 lowest positions lower than or flush in the castor bottom of this compressive state, walking aid is braking state, fully ensure that the safety of user.
Pressurization by compressed air device of the present invention can think air boost pump, and air boost pump utilizes the low-pressure gas of large area piston end drive and produce the high-pressure fluid of small area piston end.Can be used for compressed air and other gas, output pressure is by driving air pressure step-less adjustment.Be used in former air compression system will improve in the working environment of pressure.It has be easy to regulate: in the pressure limit of pump, regulate control valve thus regulate admission pressure, output hydraulic pressure is corresponding obtains electrodeless adjustment; And the function of automatic pressure-maintaining: no matter which kind of reason causes pressure dwelling loop pressure drop, will automatically start, and supplements leak pressure, keeps circuit pressure constant.
In order to reasonable in design, convenient folding dismounting, by two groups, independently shaped as frame frame side 101 and the support tubes 102 be supported between two shaped as frame frame side are formed above-mentioned support frame 1, the described leg often organizing shaped as frame frame side is separately installed with two castors 3, described shaped as frame frame side is bent by the gastight hollow pipe fitting of whole and forms, and namely pipe fitting two ends defines the leg 8 of support frame.
Shaped as frame frame side 101 is placed by erectting during use, support tubes 102 is installed between shaped as frame frame side, and on joint, connect pressurization by compressed air device and appendix thereof, namely safe walking aid of the present invention is defined, certainly, castor, push rod, piston be integrally fixed with shaped as frame frame side 101 without the need to dismantling, removable design saves space greatly, greatly facilitates and deposits and transport.
Support tubes 102 can become wheelchair and use when being fixed on shaped as frame frame side 101 position, middle and lower part.
For the ease of the unification of two groups of independence shaped as frame frame side air pressure, above-mentioned pressurization by compressed air device connects the rear access interface of two arms 10, to realize the normal pressure in whole support frame hollow cavity by a house steward 9.
For the ease of the use of different users, the air pressure of above-mentioned pressurization by compressed air device exports adjustable, and the range of accommodation of its delivery air pressure is between 0.1-2.5 thousand grams/cm.
In walking exercise routine, arm is to the active force of support frame, squat state to the active force of support frame with the whole health of user, both active forces only have the difference of tens kilograms, the gastight hollow pipe fitting of one whole is adopted to be bent into shaped as frame frame side, the normal pressure in cavity body is kept by pressurization by compressed air device in whole longer shaped as frame frame side cavity, make the spacing of castor and shaped as frame frame side leg have larger deflection, castor can be realized and compressed, the object of brake lever brake; And if employing pressurization by compressed air device directly accesses cylinder by air hose, in cylinder, piston is connected castor with push rod, the active force of above-mentioned two kinds of different conditions only has the difference of tens kilograms, the decrement that cylinder is larger cannot be given, castor cannot be shunk, cannot realize brake lever contact to earth brake object.
In order to reasonable in design, above-mentioned brake lever 7 one end is hinged on support frame leg 8, and the other end is provided with cushion 701, and the support 11 of described castor is provided with the guide groove slided in order to brake lever guiding.Be conducive to by cushion 701 effect playing buffering, be conducive to the displacement of brake lever by guide groove.
In order to realize the difference in functionality of this walking aid, the upper opposite side in brake lever of above-mentioned support frame leg is provided with quarter butt 13, described quarter butt 13 is provided with two protruding pins 1301, described brake lever is hinged with a cramp 14, described cramp is provided with the hole slot 1401 that can buckle into protruding pin, brake lever is placed by a kind of state down, and the hole slot 1401 on cramp 14 buckles into the protruding pin 1301 be arranged in compared with downside on quarter butt 13, namely forms the safety with brake function and helps walking aid; Another kind of state, brake lever placed upward, the hole slot 1401 on cramp 14 buckles into the protruding pin 1301 be arranged in compared with upside on quarter butt 13, namely forms the go-cart without brake function or wheelchair.
In order to reasonable in design, adopt ready-made standard component, above-mentioned support frame leg is provided with cylinder, piston and push rod slide in this cylinder, and brake lever is also arranged on this cylinder bottom, adopt Standard Cylinder as the leg of support frame, without the need to making the higher support frame leg of internal diameter precision, certainly, the cavity on cylinder top is connected with the shaped as frame frame side inner chamber of support frame, adopts cylinder to be preferred embodiment as the leg of support frame.
In order to satisfied reality uses needs, above-mentioned support frame is independently that " several " font aluminum shaped as frame frame side and the aluminum support tubes be supported between two shaped as frame frame side are formed by two groups, described shaped as frame frame side is bent by the gastight hollow pipe fitting of whole and forms, namely pipe fitting two ends defines the leg of support frame, the leg often organizing shaped as frame frame side respectively seamless welding have cylinder, in cylinder lower body, be provided with piston and push rod, push rod lower end is connected with castor.
Aluminium is the environment-friendly products of generally acknowledging at present, adopts aluminium making shaped as frame frame side and support tubes to be the objects that can realize its environmental protection.
For the ease of its dismounting, above-mentioned support tubes 102 end has slotted eye 103, and described shaped as frame frame side 101 upper and lower correspondence is provided with projection piece 104 to coordinate with slotted eye 103.
The assembling of the safe walking aid of the present invention and using method, during installation, first first fix two support tubes between two groups of aluminum shaped as frame frame side, at seam access pressurization by compressed air device and gas transmission pipe fitting thereof, during use, user ties up bandage at its waist or buttocks, user moves into the center of support frame, other for bandage one is connected and fixed on the support frame, now can use, user both hands are supported on the top of support frame, by moving of both hands and both legs, realize the step exercises of user, owing to being filled with compressed air in shaped as frame frame side and cylinder block, it is made to promote piston and push rod, push rod supported foot is taken turns, support castor and be in extended configuration, four support castors can the body weight of support human body 0-50%, when user tempers walking, under normal condition, user foot support most body weight (60-80% of percentage of liveweight), the user hand power acted on walking aid is about the body weight of 0-50%, now, although compressed although the push rod of castor connection and piston have, when decrement is little, brake lever lowest positions is higher than the castor bottom of this state, castor can normally roll, when user leg power forms crouching ground posture not, user makes whole body weight act on walking aid by bandage, now, air in shaped as frame frame side and cylinder block is less than user body weight to the thrust of piston, push rod and castor, castor is in confined state, brake lever lowest positions lower than or flush in the castor bottom of compressive state, namely brake lever contacts with bottom surface bottom, and namely walking aid cannot slide.
The safe walking aid of the present invention only nursing staff need be had to help to tie up in whole use procedure and after fixing bandage, user gets final product oneself and carries out step exercises, personnel need not accompany in addition, greatly facilitate use, decreases nursing and pays wages.Also safer, effective than carrying out reconditioning in swimming pool.
The foregoing is only preferred embodiment of the present invention, all equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (10)
1. a safe walking aid, it is characterized in that: comprise the support frame that leg is provided with at least three castors, described support frame is provided with the interface that is connected with pressurization by compressed air device to ensure the normal pressure in whole support frame hollow cavity, be provided with the push rod stretched in support frame leg body above the support of castor, described push rod upper end is provided with can the piston of slippage in described support frame leg hollow cavity; Described support frame is provided with the bandage for being supported on user waist or buttocks, brake lever is provided with at support frame leg, described brake lever lowest positions lower than or flush in the castor bottom of compressive state, and brake lever lowest positions is higher than the bottom of extended configuration castor.
2. safe walking aid according to claim 1, it is characterized in that: by two groups, independently shaped as frame frame side and the support tubes be supported between two shaped as frame frame side are formed described support frame, the described leg often organizing shaped as frame frame side is separately installed with two castors, described shaped as frame frame side is bent by the gastight hollow pipe fitting of whole and forms, and namely pipe fitting two ends defines the leg of support frame.
3. safe walking aid according to claim 1 and 2, is characterized in that: described pressurization by compressed air device connects access interface after two arms, to realize the normal pressure in whole support frame hollow cavity by a house steward.
4. safe walking aid according to claim 3, is characterized in that: the air pressure of described pressurization by compressed air device exports adjustable, and the range of accommodation of its delivery air pressure is between 0.1-2.5 thousand gram/cm 2.
5. safe walking aid according to claim 1, is characterized in that: described brake lever one end is hinged on support frame leg, and the other end is provided with cushion, and the support of described castor is provided with the guide groove slided in order to brake lever guiding.
6. safe walking aid according to claim 5, it is characterized in that: the upper opposite side in brake lever of described support frame leg is provided with quarter butt, described quarter butt is provided with two protruding pins, described brake lever is hinged with a cramp, and described cramp is provided with the hole slot that can buckle into protruding pin.
7. safe walking aid according to claim 1, is characterized in that: described support frame leg is provided with cylinder, and piston and push rod slide in this cylinder, and brake lever is also arranged on this cylinder bottom.
8. safe walking aid according to claim 1, it is characterized in that: described support frame is independently that " several " font aluminum shaped as frame frame side and the aluminum support tubes be supported between two shaped as frame frame side are formed by two groups, described shaped as frame frame side is bent by the gastight hollow pipe fitting of whole and forms, namely pipe fitting two ends defines the leg of support frame, the leg often organizing shaped as frame frame side respectively seamless welding have cylinder, in cylinder lower body, be provided with piston and push rod, push rod lower end is connected with castor.
9. safe walking aid according to claim 8, is characterized in that: described support tubes end has slotted eye, and described shaped as frame frame side upper and lower correspondence is provided with projection piece to coordinate with slotted eye.
10. the assembling of safe walking aid and a using method, is characterized in that: during installation, first first between two groups of aluminum shaped as frame frame side, fixes two support tubes, at seam access pressurization by compressed air device and gas transmission pipe fitting thereof, during use, user ties up bandage at its waist or buttocks, user moves into the center of support frame, other for bandage one is connected and fixed on the support frame, now can use, user both hands are supported on the top of support frame, by moving of both hands and both legs, realize the step exercises of user, owing to being filled with compressed air in shaped as frame frame side and cylinder block, it is made to promote piston and push rod, push rod supported foot is taken turns, support castor and be in extended configuration, four support castors can the body weight of support human body 0-50%, when user tempers walking, under normal condition, user foot support most body weight (60-80% of percentage of liveweight), the user hand power acted on walking aid is about the body weight of 0-50%, now, although compressed although the push rod of castor connection and piston have, when decrement is little, brake lever lowest positions is higher than the castor bottom of this state, castor can normally roll, when user leg power forms crouching ground posture not, user makes whole body weight act on walking aid by bandage, now, air in shaped as frame frame side and cylinder block is less than user body weight to the thrust of piston, push rod and castor, castor is in confined state, brake lever lowest positions lower than or flush in the castor bottom of compressive state, namely brake lever contacts with bottom surface bottom, and namely walking aid cannot slide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310371481.2A CN104414831A (en) | 2013-08-23 | 2013-08-23 | Safe walking aid and mounting and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310371481.2A CN104414831A (en) | 2013-08-23 | 2013-08-23 | Safe walking aid and mounting and use method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN104414831A true CN104414831A (en) | 2015-03-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310371481.2A Pending CN104414831A (en) | 2013-08-23 | 2013-08-23 | Safe walking aid and mounting and use method thereof |
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| CN (1) | CN104414831A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105616115A (en) * | 2016-03-10 | 2016-06-01 | 石灵绯 | Postoperative clinical-nursing safe walking aid for patient |
| CN106726372A (en) * | 2016-12-29 | 2017-05-31 | 桂林电子科技大学 | One kind replaces walking frame, wheeled walking frame and wheelchair |
| CN106859926A (en) * | 2017-01-15 | 2017-06-20 | 浙江师范大学 | A kind of multifunction walking-aid device |
| CN111215408A (en) * | 2020-03-06 | 2020-06-02 | 王心悦 | Fresh air system pipeline cleaning robot device |
| CN113082631A (en) * | 2021-04-15 | 2021-07-09 | 刘勇 | Rehabilitation training vehicle for cerebral infarction patient |
| CN114631984A (en) * | 2022-03-11 | 2022-06-17 | 南昌大学第一附属医院 | Intelligent device capable of assisting walking of elderly medical patients |
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| US20010048206A1 (en) * | 1999-12-23 | 2001-12-06 | Niu Timothy O. | Rolling walker with load ensuring mechanism |
| CN201775754U (en) * | 2010-09-13 | 2011-03-30 | 杨荣洪 | Rear foot wheel device of mobility aid |
| CN202909040U (en) * | 2012-11-20 | 2013-05-01 | 张嘉宝 | Improved structure of walking aid |
| CN203483628U (en) * | 2013-08-23 | 2014-03-19 | 胡友明 | Safety walking aid |
-
2013
- 2013-08-23 CN CN201310371481.2A patent/CN104414831A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010048206A1 (en) * | 1999-12-23 | 2001-12-06 | Niu Timothy O. | Rolling walker with load ensuring mechanism |
| CN201775754U (en) * | 2010-09-13 | 2011-03-30 | 杨荣洪 | Rear foot wheel device of mobility aid |
| CN202909040U (en) * | 2012-11-20 | 2013-05-01 | 张嘉宝 | Improved structure of walking aid |
| CN203483628U (en) * | 2013-08-23 | 2014-03-19 | 胡友明 | Safety walking aid |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105616115A (en) * | 2016-03-10 | 2016-06-01 | 石灵绯 | Postoperative clinical-nursing safe walking aid for patient |
| CN105616115B (en) * | 2016-03-10 | 2018-08-03 | 石灵绯 | A kind of safe walk helper of postoperative clinical care of patient |
| CN106726372A (en) * | 2016-12-29 | 2017-05-31 | 桂林电子科技大学 | One kind replaces walking frame, wheeled walking frame and wheelchair |
| CN106859926A (en) * | 2017-01-15 | 2017-06-20 | 浙江师范大学 | A kind of multifunction walking-aid device |
| CN111215408A (en) * | 2020-03-06 | 2020-06-02 | 王心悦 | Fresh air system pipeline cleaning robot device |
| CN113082631A (en) * | 2021-04-15 | 2021-07-09 | 刘勇 | Rehabilitation training vehicle for cerebral infarction patient |
| CN114631984A (en) * | 2022-03-11 | 2022-06-17 | 南昌大学第一附属医院 | Intelligent device capable of assisting walking of elderly medical patients |
| CN114631984B (en) * | 2022-03-11 | 2023-05-16 | 南昌大学第一附属医院 | Intelligent device capable of assisting elderly medical patients in walking |
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Effective date of abandoning: 20180403 |