CN110279570B - Air pressure wave therapeutic instrument leg cover jointing equipment - Google Patents
Air pressure wave therapeutic instrument leg cover jointing equipment Download PDFInfo
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- CN110279570B CN110279570B CN201910580912.3A CN201910580912A CN110279570B CN 110279570 B CN110279570 B CN 110279570B CN 201910580912 A CN201910580912 A CN 201910580912A CN 110279570 B CN110279570 B CN 110279570B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H9/00—Pneumatic or hydraulic massage
- A61H9/005—Pneumatic massage
- A61H9/0078—Pneumatic massage with intermittent or alternately inflated bladders or cuffs
- A61H9/0092—Cuffs therefor
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
- A61H2201/01—Constructive details
- A61H2201/0103—Constructive details inflatable
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
- A61H2201/16—Physical interface with patient
- A61H2201/1602—Physical interface with patient kind of interface, e.g. head rest, knee support or lumbar support
- A61H2201/164—Feet or leg, e.g. pedal
- A61H2201/1642—Holding means therefor
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H2205/00—Devices for specific parts of the body
- A61H2205/10—Leg
- A61H2205/108—Leg for the upper legs
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H2209/00—Devices for avoiding blood stagnation, e.g. Deep Vein Thrombosis [DVT] devices
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- Epidemiology (AREA)
- Pain & Pain Management (AREA)
- Physical Education & Sports Medicine (AREA)
- Rehabilitation Therapy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Massaging Devices (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
Abstract
The invention relates to the technical field of medical appliances and discloses air pressure wave therapeutic instrument leg sleeve connecting equipment which comprises four air bags, wherein the lengths of the four air bags are the same as that of thighs, a connector air pipe is arranged inside each air bag and penetrates through the four air bags, a pressure gauge is connected to the left side of each connector air pipe, and a movable hole is formed in the top of each connector air pipe. This air pressure wave therapeutic instrument leg cover jointing equipment, run through all gasbags through a joint trachea, during the use, joint tracheal left side begins to inflate, piston left side pressure grow begins to move to the right, when the piston passes through the movable hole below, the ejector pad moves the movable rod upwards and removes, first gas pocket and the inseparable laminating of second gas pocket this moment, second gas pocket below opening shifts out the base cover simultaneously, first gas pocket top opening moves the mount table top, connect tracheal left side chamber and gasbag to communicate with each other like this, in the gasbag was irritated to gas, the air current was found out and is released the mouth, no longer promote the piston and remove.
Description
Technical Field
The invention relates to the technical field of medical appliances, in particular to a leg sleeve connecting device of an air pressure wave therapeutic apparatus.
Background
The air pressure wave therapeutic apparatus adopts the physical therapy, continuously circulates, inflates and deflates through the air bags, massages and extrudes a human body, promotes the flow of blood and lymph fluid, improves microcirculation, accelerates the backflow of limb tissue fluid, is beneficial to preventing the formation of thrombus and limb edema, and can directly or indirectly treat a plurality of diseases related to blood lymph circulation.
Because human shank limb rod is longer, so the leg cover that the instrument corresponds needs a plurality of gasbags to splice, and every gasbag need external trachea alone inflate the exhaust, and many trachea arrange together like this, in accomodating or the use, lead to the trachea to twine each other easily together, influence normal use, so can damage the trachea for a long time, therefore we have provided an air pressure wave therapeutic instrument leg cover jointing equipment and have solved the problem.
Disclosure of Invention
In view of the above problems, the present invention provides an air pressure wave therapeutic apparatus leg cuff connection device, which is convenient to use and can prevent the windup of the trachea.
The invention adopts the following technical scheme for realizing the technical purpose: the utility model provides an air pressure wave therapeutic instrument leg cover jointing equipment, includes four gasbags, the length of four gasbags with thigh length is the same, the internally mounted of gasbag has the joint trachea, connects the trachea and runs through four gasbags, connects tracheal left side and is connected with the pressure gauge.
Connect tracheal top and seted up the movable hole, the top opening part of movable hole glues to be stained with the mount table, the top interlude of mount table is provided with the movable rod that extends to connect the trachea inside, first gas pocket has been seted up to the inside of movable rod, the one end opening of first gas pocket is located the movable rod bottom, and the other end opening is located the movable rod outside.
The inside rotation of first gas pocket is connected with the closing plate, the bottom of movable rod and the left side that is located first gas pocket have seted up movable groove, the inside grafting of movable groove has the connecting rod, the rotation groove has been seted up between movable groove and the first gas pocket, the inside swing joint in rotation groove has the kelly.
Connect tracheal inside sliding connection to have the piston, the interior diapire of piston glues glutinous base cover, the inside sliding connection of base cover has the ejector pin that extends to the piston outside, the second gas pocket has been seted up to the inside of ejector pin, the one end opening in second gas pocket is located the outside of ejector pin, and other end opening is located the ejector pin top, the bottom of ejector pin is inlayed with the interior diapire of base cover and is had reset magnet, reset spring has been cup jointed in the outside of movable rod.
As optimization, the number and the positions of the movable holes correspond to those of the air bags, the top of the mounting table is provided with a groove, the top of the movable rod is fixedly connected with an umbrella-shaped block,
preferably, the first air hole and the second air hole are both in a T shape, the first air hole is completely located below the mounting table when the first air hole is closed, an opening below the second air hole is closed and located in the base sleeve, a limiting block is fixedly connected to the inner portion of the first air hole and located above the sealing plate, and the clamping rod is located above the sealing plate.
As optimization, the connecting rod adopts magnetic metal to make, the top of ejector pin is inlayed and is had the attraction magnet that corresponds with the connecting rod, connecting rod and kelly swing joint, two the relative one side of reset magnet is the N utmost point.
As optimization, the first air hole corresponds to the second air hole, the return spring is positioned between the groove and the umbrella-shaped block, the top of the ejector rod is set to be a curved surface, and the diameter of the movable opening is larger than that of the fixed rod.
Preferably, as shown in fig. 5, the return spring is in an initial state, like fig. 7, and the return spring is in a stretched state, the device can not be folded freely, and the internal structure is prevented from being damaged.
The invention has the following beneficial effects:
1. this air pressure wave therapeutic instrument leg cover connecting device runs through all gasbags through a joint trachea, during the use, connects tracheal left side and begins to inflate, and piston left side pressure grow begins to move right, when the piston passes through the movable hole below, pushes away ejector pin rebound through the repulsion between two reset magnets, pushes up and moves the movable rod rebound, and first gas pocket is closely laminated with the second gas pocket this moment.
Meanwhile, the opening below the second air hole moves out of the base sleeve, the opening above the first air hole moves to the position above the mounting table, so that the left cavity of the joint air pipe is communicated with the air bag, air is filled into the air bag, and the air flow finds the vent hole and does not push the piston to move any more.
When the air bag is slowly filled with air, the pressure in the air bag and the left cavity of the joint air pipe is increased again, the air flow pushes the piston to move rightwards again, when the piston moves to the next movable opening, the second air bag starts to inflate, and all the air bags are filled in sequence.
When needs exhaust, connect the trachea left side and begin to bleed, piston left side pressure diminishes, begins to move left, and the while principle, air escape in the gasbag aerifys the exhaust through a trachea control gasbag like this, and it is more convenient to use, can prevent that many tracheas from twining each other, influences the instrument and uses, has prolonged tracheal life.
2. This air pressure wave therapeutic instrument leg cover jointing equipment, through at the downthehole closing plate of installation of first gas pocket, control at the piston, first gas pocket and second gas pocket dock around completely, as figure 9, suction magnet is skew with the activity groove, and the connecting rod keeps initial state with the kelly, and the kelly dies the closing plate card with the stopper, seals first gas pocket.
When the ejector pin is located under the movable rod, first gas pocket and second gas pocket dock completely, and suction magnet also is located under the movable groove simultaneously, and suction magnet passes through magnetic force and stimulates the connecting rod downwards, like the state of fig. 10, and the left end of connecting rod downward pulling kelly utilizes lever principle, and kelly anticlockwise rotates, rotates certain angle closing plate and loses the restriction, and anticlockwise rotates, opens first gas pocket.
Only when first gas pocket and second gas pocket dock completely like this, the gasbag just communicates with the piston inside groove, prevents at the in-process that the ejector pin removed, ejector pin and movable rod dislocation, make first gas pocket expose outside, lead to the interior gas of gasbag to leak, influence the treatment.
3. This air pressure wave therapeutic instrument leg cover jointing equipment, the motion of piston passes through air pressure control, and the atmospheric pressure that can only be in the gasbag rises or descends to certain degree like this, and the piston just can remove, so makes the instrument not receiving the influence of human limb pole thickness, improves the application scope of gasbag cover, does not need frequent change, has made things convenient for medical personnel work.
4. This air pressure wave therapeutic instrument leg cover connecting device through the fixed connection with trachea and gasbag, improves the activity butt joint of weighing ejector pin and movable rod, can prevent like this that the instrument from using the back for a long time, and the damage appears in the fixed connection department of trachea and gasbag, leads to the gasbag to leak gas, influences treatment.
Drawings
FIG. 1 is a schematic structural view of the leg cuff attachment apparatus of the air pressure wave therapy apparatus of the present invention.
FIG. 2 is a schematic view showing the first position of the piston in the connecting device of the leg cuff of the air pressure wave therapeutic apparatus according to the present invention.
FIG. 3 is a schematic view showing the piston in the second position of the connecting device for leg cuff of the air pressure wave therapeutic apparatus according to the present invention.
FIG. 4 is a schematic diagram showing the piston in the third position of the connecting device for the leg cuff of the air pressure wave therapeutic apparatus according to the present invention.
FIG. 5 is an enlarged view of the leg cuff attachment means of the air pressure wave therapy apparatus of the present invention at point A in FIG. 2.
FIG. 6 is an enlarged view of the leg cuff attachment means of the air pressure wave therapy apparatus of the present invention at point B in FIG. 3.
FIG. 7 is an enlarged view of the leg cuff attachment means of the air pressure wave therapy apparatus of the present invention at point C in FIG. 4.
FIG. 8 is an enlarged view of the leg cuff attachment means of the air pressure wave therapy apparatus of the present invention shown at D in FIG. 5.
FIG. 9 is an enlarged view of the leg cuff attachment means of the air pressure wave therapy apparatus of the present invention shown at D in FIG. 5.
FIG. 10 is an enlarged view of the leg cuff attachment means of the air pressure wave therapy apparatus of the present invention shown at D in FIG. 5.
In the figure: 1-air bag, 2-joint air pipe, 3-movable hole, 4-mounting table, 5-movable rod, 6-first air hole, 7-sealing plate, 8-movable groove, 9-connecting rod, 10-rotating groove, 11-clamping rod, 12-piston, 13-base sleeve, 14-ejector rod, 15-second air hole, 16-reset magnet and 17-reset spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-10, an air pressure wave therapeutic apparatus leg sleeve connection device includes four air bags 1, the length of the four air bags 1 is the same as that of a thigh, a connector air tube 2 is installed inside the air bags 1, the connector air tube 2 penetrates through the four air bags 1, and a pressure device is connected to the left side of the connector air tube 2.
Connect trachea 2's top and seted up the movable hole 3, the diameter of movable opening 3 is greater than the diameter of fixed rod 14, the quantity and the position of movable hole 3 correspond with gasbag 1, the top opening part of movable hole 3 glues to be glutinous there is mount table 4, the top of mount table 4 is seted up flutedly, the top of mount table 4 alternates and is provided with the movable rod 5 that extends to joint trachea 2 inside, the umbrella-shaped piece of top fixedly connected with of movable rod 5, first gas pocket 6 has been seted up to the inside of movable rod 5, the one end opening of first gas pocket 6 is located 5 bottoms of movable rod, the other end opening is located the 5 outsides of movable rod, first gas pocket 6 and second gas pocket 15 all become the T font, the inside of first gas pocket 6 and the top fixedly connected with stopper that is located closing plate 7, first gas pocket 6 is corresponding with second gas pocket 15.
The inside rotation of first gas pocket 6 is connected with closing plate 7, movable groove 8 has been seted up in the bottom of movable rod 5 and the left side that is located first gas pocket 6, the inside grafting of movable groove 8 has connecting rod 9, connecting rod 9 adopts magnetic metal to make, connecting rod 9 and kelly 11 swing joint, first gas pocket 6 is located the below of mount table 4 completely when sealing, rotation groove 10 has been seted up between movable groove 8 and the first gas pocket 6, the inside swing joint who rotates groove 10 has kelly 11, kelly 11 is located closing plate 7's top.
Connect trachea 2's inside sliding connection to have piston 12, the interior diapire of piston 12 glues there is base cover 13, the inside sliding connection of base cover 13 has the ejector pin 14 that extends to the piston 12 outside, the top of ejector pin 14 sets to the curved surface, the top of ejector pin 14 is inlayed and is had the suction magnet that corresponds with connecting rod 9, second gas pocket 15 has been seted up to the inside of ejector pin 14, second gas pocket 15 below opening is located base cover 13 during the closure, the one end opening of second gas pocket 15 is located the outside of ejector pin 14, the other end opening is located ejector pin 14 top, the bottom of ejector pin 14 is inlayed with reset magnet 16 with the interior diapire of base cover 13, the one side that two reset magnet 16 are relative is the N utmost point, reset spring 17 is located between recess and the umbelliform piece, reset spring 17 has been cup jointed in the outside of movable rod.
As shown in fig. 5, the return spring 17 is in an initial state, like fig. 7, the return spring 17 is in a stretched state, and the device is not folded at will, preventing the internal structure from being damaged.
When the pneumatic connector is used, the left side of the connector air pipe 2 starts to be inflated, the pressure on the left side of the piston 12 starts to move rightwards when being increased, when the piston 12 passes through the lower part of the movable hole 3, the ejector rod 14 is pushed to move upwards through the repulsive force between the two reset magnets 16, the movable rod 5 is pushed to move upwards, and at the moment, the first air hole 6 is tightly attached to the second air hole 15.
Meanwhile, the opening below the second air hole 15 moves out of the base sleeve 13, the opening above the first air hole 6 moves to the position above the mounting table 4, so that the left cavity of the joint air pipe 2 is communicated with the air bag 1, air is filled into the air bag 1, and the air flow finds the vent hole and does not push the piston 12 to move any more.
When the air bag 1 is slowly filled with air, the pressure in the left cavity of the air bag 1 and the joint air pipe 2 is increased again, the air flow pushes the piston 12 to move rightwards again, when the piston 12 moves to the next movable opening 3, the second air bag 1 starts to inflate, and all the air bags 1 are filled in sequence.
When the air needs to be exhausted, the air suction is started on the left side of the joint air pipe 2, the pressure on the left side of the piston 12 is reduced, the left side of the piston starts to move, and meanwhile, the air in the air bag 1 is exhausted.
The piston 12 moves left and right, the first air hole 6 and the second air hole 15 are completely butted, as shown in fig. 9, the attraction magnet deviates from the movable groove 8, the connecting rod 9 and the clamping rod 11 keep an initial state, the clamping rod 11 and the limiting block clamp the sealing plate 7, and the first air hole 6 is sealed.
When ejector pin 14 is located under the movable rod 5, first gas pocket 6 and second gas pocket 15 dock completely, and suction magnet also is located under the movable tank 8 simultaneously, and suction magnet passes through magnetic force and stimulates connecting rod 9 downwards, like the state of fig. 10, and connecting rod 9 stimulates the left end of kelly 11 downwards, utilizes lever principle, and kelly 11 anticlockwise rotates, rotates certain angle closing plate 7 and loses the restriction, and anticlockwise rotates, opens first gas pocket 6.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides an air pressure wave therapeutic instrument leg cover jointing equipment which characterized in that: comprises an air bag (1), a joint air pipe (2) is fixed in the air bag (1), a movable hole (3) is formed in the top of the joint air pipe (2), an installation table (4) is fixedly connected to an opening above the movable hole (3), a movable rod (5) is arranged on the top of the installation table (4) in an inserting mode, a first air hole (6) is formed in the movable rod (5), a sealing plate (7) is movably connected in the first air hole (6), a movable groove (8) is formed in the bottom of the movable rod (5), a connecting rod (9) is movably connected in the movable groove (8), a rotating groove (10) is formed between the movable groove (8) and the first air hole (6), a clamping rod (11) is movably connected in the rotating groove (10), and a piston (12) is movably connected in the joint air pipe (2), the inner bottom wall fixedly connected with base cover (13) of piston (12), the inside swing joint of base cover (13) has ejector pin (14), second gas pocket (15) have been seted up to the inside of ejector pin (14), the bottom of ejector pin (14) and the inner bottom wall fixedly connected with reset magnet (16) of base cover (13), reset spring (17) have been cup jointed in the outside of movable rod (5).
2. The air pressure wave therapy apparatus leg cuff attachment apparatus of claim 1 wherein: the number and the positions of the movable holes (3) correspond to those of the air bags (1).
3. The air pressure wave therapy apparatus leg cuff attachment apparatus of claim 1 wherein: the top of the mounting table (4) is provided with a groove, and the top of the movable rod (5) is fixedly connected with an umbrella-shaped block.
4. The air pressure wave therapy apparatus leg cuff attachment apparatus of claim 1 wherein: the first air hole (6) and the second air hole (15) are both in a T shape.
5. The air pressure wave therapy apparatus leg cuff attachment apparatus of claim 1 wherein: when the air hole is closed, the first air hole (6) is completely positioned below the mounting table (4), and the opening below the second air hole (15) is closed and positioned in the base sleeve (13).
6. The air pressure wave therapy apparatus leg cuff attachment apparatus of claim 1 wherein: the sealing structure is characterized in that a limiting block is fixedly connected to the inner portion of the first air hole (6) and the upper portion of the sealing plate (7), and the clamping rod (11) is located above the sealing plate (7).
7. The air pressure wave therapy apparatus leg cuff attachment apparatus of claim 1 wherein: the connecting rod (9) is made of magnetic metal, and the top of the ejector rod (14) is inlaid with a suction magnet corresponding to the connecting rod (9).
8. The air pressure wave therapy apparatus leg cuff attachment apparatus of claim 1 wherein: and the opposite surfaces of the two reset magnets (16) are both N poles.
9. The air pressure wave therapy apparatus leg cuff attachment apparatus of claim 1 wherein: the connecting rod (9) is movably connected with the clamping rod (11).
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| CN201910580912.3A CN110279570B (en) | 2019-06-29 | 2019-06-29 | Air pressure wave therapeutic instrument leg cover jointing equipment |
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| CN201910580912.3A CN110279570B (en) | 2019-06-29 | 2019-06-29 | Air pressure wave therapeutic instrument leg cover jointing equipment |
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| CN110279570A CN110279570A (en) | 2019-09-27 |
| CN110279570B true CN110279570B (en) | 2021-02-02 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112336600A (en) * | 2020-11-20 | 2021-02-09 | 河南省中医院（河南中医药大学第二附属医院） | Air pressure treatment device for tumor patient rehabilitation |
| CN112336601A (en) * | 2020-11-20 | 2021-02-09 | 河南省中医院（河南中医药大学第二附属医院） | Pressure adjustable atmospheric pressure therapeutic instrument |
| CN113081059B (en) * | 2021-04-01 | 2022-08-05 | 北京谱尼医学检验实验室有限公司 | Hardness-changeable protective nucleic acid detector and use method thereof |
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| CN104973229A (en) * | 2015-07-03 | 2015-10-14 | 浙江工业职业技术学院 | Multi-functional waistband |
| CN205251982U (en) * | 2015-12-21 | 2016-05-25 | 广东泰宝医疗科技股份有限公司 | A leg cover for antithrombotic therapeutic appearance |
| KR20160064055A (en) * | 2016-05-20 | 2016-06-07 | (주)대성마리프 | Cuff For Air Pressure |
| CN208511472U (en) * | 2017-08-03 | 2019-02-19 | 吉林省日成医用电子器材有限公司 | A kind of portable air wave pressures cycle therapeutic equipment |
| CN107361938A (en) * | 2017-08-21 | 2017-11-21 | 河北爱西欧医疗设备科技有限公司 | Air bed and its charge and discharge pneumatic control method with body turning function |
| CN208799490U (en) * | 2017-12-22 | 2019-04-30 | 广东美的安川服务机器人有限公司 | Air wave pressures cycle therapeutic equipment |
| CN207972770U (en) * | 2018-02-27 | 2018-10-16 | 广东海洋大学 | A kind of repeatable rodlike lifesaving appliance utilized |
| CN108652877A (en) * | 2018-07-22 | 2018-10-16 | 德州市康之源医疗器械有限责任公司 | Multifunctional bedsore-proof airbed |
| CN108743287A (en) * | 2018-08-23 | 2018-11-06 | 南通科威瀚医疗科技有限公司 | A kind of anti-pin device of wearable gradient pressure |
| CN109334907A (en) * | 2018-10-10 | 2019-02-15 | 东台市万舟船用设备有限公司 | A kind of lifebuoy of anti-gas-leak |
| CN109733563A (en) * | 2018-12-26 | 2019-05-10 | 苏冬梅 | It is a kind of to utilize the laughable portable swim ring of sport swimming instruction for carrying out fast aeration |
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