CN112842749B

CN112842749B - Sore nursing device is pressed to back

Info

Publication number: CN112842749B
Application number: CN202110195315.6A
Authority: CN
Inventors: 范颖英; 袁燕; 李秋萍; 郭芳; 齐小芬
Original assignee: First Affiliated Hospital of Xinxiang Medical University
Current assignee: First Affiliated Hospital of Xinxiang Medical University
Priority date: 2021-02-20
Filing date: 2021-02-20
Publication date: 2022-04-12
Anticipated expiration: 2041-02-20
Also published as: CN112842749A

Abstract

A back pressure sore nursing device, which effectively solves the problems that the prior device can not automatically change the posture of a patient and can cause the local part of the patient to be pressed, and comprises a back plate, the lower extreme of backplate is equipped with clamping mechanism, the upper end of backplate is equipped with first gasbag, the gasbag is stood up to the second, first gasbag and the second of standing up stands up the upper end of gasbag and all is equipped with first support gasbag and second support gasbag, the rear end of backplate is equipped with the cushion, the front end of backplate is equipped with the regulating box, be equipped with first cylinder in the regulating box, the second cylinder, reversing mechanism, stepless speed reduction mechanism and mechanism of taking a breath, the effectual mesh that can use on sick bed and wheelchair that has reached, the defect that the patient upper part of the body can not be raised up has been solved, patient's posture switching time interval adjustable purpose has been reached, the probability that the buttock produced pressure sore when having reduced patient sit up or sitting up has reached the purpose that manual control device made patient's posture change.

Description

Sore nursing device is pressed to back

Technical Field

The invention belongs to the technical field of medical care equipment, and particularly relates to a back pressure sore nursing device.

Background

Pressure sores are also called bedsores and pressure ulcers, and are common complications in long-term bedridden patients and patients who depend on wheelchairs for a long time, the skin loses normal functions due to long-term pressure of local tissues of the body, tissue damage and necrosis are caused, serious pressure sores can cause serious secondary infection, if the patients have basic diseases, the lives of the patients are affected by the serious complications, active diagnosis and treatment are needed when the pressure sores appear, the pressure sores of the patients lying in bed for a long time are mostly arranged on the back or two sides of the head, shoulders, thighbones and the back, the patients lying in bed or sitting on wheelchairs for a long time need to change the body positions once every 1h, meanwhile, the cleanness and the dryness of the affected part skin of the patients need to be kept, the patients need to avoid long-term pressure of the local skin for avoiding new pressure sores, and some patients who suffer from incontinence and have excrement which is not cleaned up completely and easily cause pressure sores infection, as patients suffering from pressure sores rise year by year, a plurality of pressure sore nursing devices are also arranged in the nursing process, but the existing devices only enable the patients to keep the same posture and massage the parts of the patients suffering from pressure sores mostly, the mode is not favorable for healing of the pressure sores, body fluid secreted from the pressure sores can remain at the upper ends of the massage devices, when a new patient washes and uses the device, the patients are likely to be cross-infected, the existing nursing devices can be mostly used only on a sickbed, the patients who sit on a wheelchair for a long time can not have good nursing effect, the application range is not wide enough, the existing nursing devices mostly use electric energy, because the motor has heavy mass, the existing nursing devices are not long and inconvenient in the carrying process, the motor has large transmission force, the patients are easy to be injured by being pinched, and if the posture of the patients needs to be changed in the using process, the existing devices need manual adjustment of medical staff or family members of the patients, this kind of mode causes the damage to patient's pressure sore position very easily when removing the patient to some patient that are comparatively obese are very inconvenient when changing the position, need the patient to have the incline to having wounded one side when changing the position to some patient that one side is wounded, this just leads to current nursing device to cause secondary damage to patient's position that has the wound very easily when using, so need can change patient's posture voluntarily when using and avoid the long-time pressurized back pressure sore nursing device of patient's part.

Disclosure of Invention

In view of the above situation, in order to overcome the defects of the prior art, the invention provides a back pressure sore nursing device, which effectively achieves the purpose of automatically changing the posture of a patient, avoids the problem that the patient is locally stressed in time, achieves the purpose of being used on a sickbed and a wheelchair, overcomes the defect that the upper half of the patient cannot be lifted up, achieves the purpose of adjusting the patient posture switching time interval, optimizes the air permeability of the back of the patient, reduces the probability of pressure sores generated on the hip of the patient when the patient sits up or stands, achieves the purpose of changing the posture of the patient by a manual control device, achieves the purposes of padding and massaging the back of the patient, and reduces the labor pressure of medical staff.

In order to achieve the purpose, the invention adopts the following technical scheme: the multifunctional turning-over air bag comprises a back plate, wherein a clamping mechanism is arranged at the lower end of the back plate, an inflatable first turning-over air bag and an inflatable second turning-over air bag are symmetrically arranged at the upper end of the back plate in the left-right direction, the second air bag is automatically deflated when the first air bag is inflated to form a limiting structure for a patient to lie on the right side, the first air bag is automatically deflated to form a limiting structure for the patient to lie on the left side when the first air bag and the second air bag are simultaneously deflated to form a structure for the patient to lie on the right side, a plurality of first supporting air bags and a plurality of second supporting air bags are respectively arranged at the upper ends of the first turning-over air bag and the second turning-over air bag, the first supporting air bags and the second supporting air bags are alternately arranged in the front-back direction and the back-direction, a first turning-over air pipe and a second air pipe are respectively arranged at the left side of the first turning-over air bag and the right side of the second air bag, and each first air pipe is communicated with the corresponding first supporting air bag, each second air pipe is communicated with a corresponding second supporting air bag, a plurality of cushions are arranged at the rear end of the back plate, a plurality of pressure reducing air bags are arranged at the upper end of each cushion, an adjusting box is arranged at the front end of the back plate, a first air cylinder and a second air cylinder are arranged in the adjusting box, the first air cylinder is communicated with each first air pipe, the second air cylinder is communicated with each second air pipe, a main air pipe is arranged in the adjusting box, the front end of the main air pipe penetrates through the adjusting box, a first bidirectional air pipe is communicated between the main air pipe and the first air cylinder, a second bidirectional air pipe is communicated between the main air pipe and the second air cylinder, the middle part of the main air pipe is rotatably connected with a switching block, and the switching block and the main air pipe are matched with each other to form a structure that the first air cylinder and the second air cylinder are inflated in a circulating and reciprocating manner;

a switching driving gear is arranged above the switching block, a transmission rack is meshed at the rear end of the switching driving gear, a reversing mechanism is arranged at the front end of the transmission rack, a stepless speed reducing mechanism is arranged at the lower end of the reversing mechanism, a transmission rod is arranged at the lower end of the stepless speed reducing mechanism, the left end part of the transmission rod penetrates through the adjusting box, a limiting disc is sleeved at the left end of the transmission rod and is in threaded fit with the adjusting box, a first driven bevel gear is fixedly sleeved at the middle part of the rotating rod, a first supporting spring is arranged at the right end of the first driven bevel gear, the limiting disc and the rotating rod are matched with each other to form a limiting structure of the first driven bevel gear, a first driving bevel gear is meshed above the first driven bevel gear, a worm is fixedly connected at the right end of the rotating rod, a worm wheel is meshed at the rear end of the worm, and a ventilation mechanism is arranged above the worm wheel, the rear end of the air exchange mechanism is provided with a first air duct and a second air duct, the end part of the first air duct penetrates through the back plate and is communicated with the first turning-over air bag, and the end part of the second air duct penetrates through the back plate and is communicated with the second turning-over air bag.

Preferably, a sliding rack is arranged between the first cylinder and the second cylinder, a piston is arranged at each of the left end and the right end of the sliding rack, each piston is arranged in the corresponding first cylinder and the second cylinder and can slide left and right along the corresponding first cylinder and the corresponding second cylinder, the rear end of the sliding rack is meshed with the switching driving gear, the lower end of the switching driving gear is fixedly connected with a poking rod, the upper end of the switching block is provided with a C-shaped groove, the poking rod is arranged in the C-shaped groove and can slide along the C-shaped groove, a torsion spring is arranged between the switching block and the switching driving gear, a plurality of positioning holes are arranged above the main air pipe, a positioning slide block is arranged in each positioning hole, each positioning slide block can slide back and forth along the corresponding positioning hole, and the rear end of each positioning slide block is provided with a second supporting spring, each positioning slide block and the corresponding second supporting spring are matched with each other to form a limiting structure of the switching rod, an exhaust channel is formed in the middle of the main air pipe, the left end of the first air cylinder is communicated with a first three-way air pipe, the right end of the second air cylinder is communicated with a second three-way air pipe, each first air pipe is communicated with the first three-way air pipe, and each second air pipe is communicated with the second three-way air pipe.

Preferably, every the front end of cushion all is equipped with nylon cloth, the other end of nylon cloth and the rear end fixed connection of backplate, every the decompression gasbag of cushion upper end communicates each other, every the decompression gasbag at cushion upper end middle part all communicates there is an air inlet hose, seted up pressure boost pipe in the backplate, every air inlet hose all communicates with pressure boost pipe, pressure boost pipe's front end and first three trachea intercommunication, the top that first gasbag and the second of standing up the gasbag is equipped with a latex pad jointly.

Preferably, the clamping mechanism comprises a first clamping plate and a second clamping plate, the left end of the first clamping plate is rotatably connected with a plurality of connecting screw rods, a first toothed belt is sleeved outside each connecting screw rod, a first adjusting rod is connected in the connecting screw rod at the front end in a sliding manner, the right end of the second clamping plate is fixedly connected with a plurality of connecting screw tubes, each connecting screw tube corresponds to each connecting screw rod one by one and is in threaded fit with each other, each connecting screw rod is matched with the corresponding connecting screw rod to form a limiting structure of the first clamping plate and the second clamping plate, the inner sides of the first clamping plate and the second clamping plate are rotatably connected with an overturning screw rod, the outer side of each overturning screw rod is in threaded fit with an overturning slide block, and the inner side of each overturning slide block is rotatably connected with an overturning connecting rod, the front end of every upset connecting rod all rotates with the backplate to be connected, every the equal fixed cover of front end of upset screw rod is equipped with a second driven bevel gear, the left side of first clamp bar is rotated and is connected with one and connects public pole, and the second clamp plate have the side to rotate and be connected with one and connect female pole, and the outside of connecting public pole and being connected female pole is fixed the cover respectively and is equipped with a second drive bevel gear, every second drive bevel gear all with correspond the second driven bevel gear intermeshing of side, the left end portion of the female pole of connecting rod can be equipped with a plurality of meshing breachs, and the right-hand member portion of connecting public pole is equipped with a plurality of meshing archs, and every meshing is protruding to form with the meshing breach that corresponds and is connected public pole and the coaxial pivoted structure of connecting female pole, sliding connection has a second regulation pole in the public pole.

Preferably, the reversing mechanism comprises a supporting plate, the upper end of the supporting plate is rotatably connected with a reversing driving gear, the reversing driving gear is meshed with the transmission rack, the front side of the reversing driving gear is meshed with a first reversing gear, the left end of the first reversing gear is meshed with a second reversing gear, the rear side of the driving gear is meshed with a third reversing gear, the third reversing gear and the second reversing gear are meshed with a reversing driven gear together, the first reversing gear and the third reversing gear are rotatably connected with a gear support, each gear support is slidably connected with the supporting plate, and the tail end of each gear support is provided with a third supporting spring.

Preferably, the stepless speed reducing mechanism comprises a driving belt wheel and a driven mechanism, the driving belt wheel and the reversing driven gear rotate coaxially, the driven mechanism comprises a supporting rod, the lower end of the supporting rod is fixedly connected with the first driving bevel gear, a plurality of driven belt wheels are slidably connected to the outer portion of the supporting rod, a plurality of fourth supporting springs are arranged between each belt wheel and the corresponding supporting rod, a second toothed belt is sleeved between each driving belt wheel and the corresponding driven mechanism, an extrusion belt wheel is arranged on the front side of each second toothed belt, a traveling sliding block is arranged in the middle of each extrusion belt wheel, an extrusion screw rod is arranged at each of the upper end and the lower end of each traveling sliding block in a threaded fit mode, the front ends of the two extrusion screw rods are meshed with an adjusting disc together, and the front end of each adjusting disc penetrates through the front end of the adjusting box and is arranged in the front portion of the adjusting box.

Preferably, the ventilation mechanism comprises a ventilation plate, the upper end of the ventilation plate is communicated with an air inlet pipe, the other end of the air inlet pipe is communicated with the main air pipe, the lower end of the ventilation plate is fixedly connected with a driven sheave, a driving sheave is arranged on the left side of the driven sheave and rotates coaxially with the worm wheel, the driving sheave and the driven sheave are matched with each other to form a structure for intermittent rotation of the ventilation plate, an air inlet groove and a plurality of air exhaust grooves are formed in the ventilation plate, a communication plate is arranged on the outer side of the ventilation plate, a first air outlet groove and a second air outlet groove are formed in the communication plate, the first air outlet groove is communicated with the first air guide pipe, and the second air outlet groove is communicated with the second air guide pipe.

Compared with the prior art, the invention has the following beneficial effects: 1. the device is provided with a first turning-over air bag, a second turning-over air bag and a ventilation mechanism, and achieves the purpose of automatically changing the posture of a patient. 2. This device has first support gasbag, second support gasbag and switches piece, main trachea, switches the piece and mutually supports the gasbag with main trachea and fills the gassing in turn with the second support gasbag for first support gasbag, has avoided the local pressurized problem of time of patient. 3. The device is provided with nylon cloth and a plurality of cushions, and achieves the purpose of being used on both sickbeds and wheelchairs. 4. This device has detachable clamping mechanism, and every upset slider all moves along the upset slide bar synchronization that corresponds in the clamping mechanism, makes the upset connecting rod extrude the backplate, makes the backplate front end upwards overturn, has solved the defect that patient's upper part of the body can not be raised up. 5. The device is provided with a stepless speed reducing mechanism, and can control the position of the extrusion belt wheel to achieve the purpose of controlling the diameter of the driven mechanism, thereby controlling the transmission ratio between the driving belt wheel and the driven mechanism and achieving the purpose of adjusting the posture switching time interval of a patient. 6. This device has the latex pad, has optimized the gas permeability of patient's back. 7. The device is provided with the cushion and the pressure reducing air bag, so that the probability of pressure sores generated on the buttocks of a patient when the patient sits on the back or stands is reduced. 8. The device is provided with a limiting disc and an adjusting rod, and the aim of changing the posture of a patient by manually controlling the device is fulfilled. 9. This device has the latex pad, and the upper end of latex pad is equipped with a plurality of latex archs, has reached and has carried out liner and massage's purpose to patient's back. 10. The device is provided with the ventilation mechanism and the worm wheel, the state of the device is not required to be manually adjusted by medical personnel, and the labor pressure of the medical personnel is reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural view of the present invention when lying on the right side.

FIG. 2 is a schematic view of the supine left side body configuration of the present invention.

Fig. 3 is a schematic structural view of the present invention placed above a wheelchair.

Fig. 4 is a schematic view of the internal structure of the conditioning tank of the present invention.

Fig. 5 is a schematic position diagram of the reversing mechanism, the stepless speed reducing mechanism and the ventilation mechanism in the invention.

FIG. 6 is a schematic view of the alternative inflation and deflation of the first support cells and the second support cells in the present invention.

Fig. 7 is a schematic view of the internal structure of the main air tube according to the present invention.

Fig. 8 is a schematic structural view of the transmission rod and the stepless speed reducing mechanism in the invention.

Fig. 9 is a schematic structural view of the seat cushion of the present invention.

Fig. 10 is a schematic view of the structure of the clamping mechanism of the present invention.

Fig. 11 is a schematic diagram illustrating the principle of the back plate flipping in the present invention.

Fig. 12 is a schematic structural view of the reversing mechanism and the stepless speed reducing mechanism of the invention.

Fig. 13 is a schematic structural view of the ventilation mechanism of the present invention.

In the figure: 1-back plate, 2-clamping mechanism, 3-first turning air bag, 4-second turning air bag, 5-first supporting air bag, 6-second supporting air bag, 7-first air pipe, 8-second air pipe, 9-cushion, 10-pressure reducing air bag, 11-regulating box, 12-first air cylinder, 13-second air cylinder, 14-main air pipe, 15-first bidirectional air pipe, 16-second bidirectional air pipe, 17-switching block, 18-switching driving gear, 19-driving rack, 20-reversing mechanism, 21-stepless speed reducing mechanism, 22-driving rod, 23-limiting disk, 24-first driven bevel gear, 25-first supporting spring, 26-first driving bevel gear, 27-worm, 28-worm gear, 29-ventilation mechanism, 30-first air duct, 31-second air duct, 32-sliding rack, 33-piston, 34-poke rod, 35-C-shaped groove, 36-torsion spring, 37-positioning hole, 38-positioning slide block, 39-second supporting spring, 40-exhaust duct, 41-first three-way air duct, 42-second three-way air duct, 43-nylon cloth, 44-air inlet hose, 45-pressure increasing pipe, 46-latex pad, 47-first clamping plate, 48-second clamping plate, 49-connecting screw rod, 50-first toothed belt, 51-first adjusting rod, 52-connecting screw tube, 53-overturning screw rod, 54-overturning slide block, 55-overturning connecting rod, 56-second driven bevel gear, 57-connecting male rod, 58-connecting female rod, 59-second driving bevel gear, 60-meshing notch, 61-meshing protrusion, 62-second adjusting rod, 63-supporting plate, 64-reversing driving gear, 65-first reversing gear, 66-second reversing gear, 67-third reversing gear, 68-reversing driven gear, 69-gear support, 70-third supporting spring, 71-driving pulley, 72-driven mechanism, 73-second toothed belt, 74-extrusion pulley, 75-traveling slide block, 76-extrusion screw, 77-adjusting plate, 78-supporting rod, 79-driven pulley, 80-fourth supporting spring, 81-air exchange plate, 82-air inlet pipe, 83-driven pulley, grooved pulley, pulley, 84-driving grooved wheel, 85-air inlet groove, 86-air outlet groove, 87-communicating plate, 88-first air outlet groove and 89-second air outlet groove.

Detailed Description

The following detailed description of the present invention will be made with reference to the accompanying drawings 1-13

In the first embodiment, as shown in fig. 1-6 and 8, the invention comprises a back plate 1, in order to change the position of a patient, a clamping mechanism 2 is arranged at the lower end of the back plate 1, the clamping mechanism 2 can be clamped at the upper end of a common sickbed, in order to help the patient to turn over, an inflatable first turn-over airbag 3 and a second turn-over airbag 4 are symmetrically arranged at the upper end of the back plate 1, the first turn-over airbag 3 and the second turn-over airbag 4 are made of the same material and are both made of sterile and odorless rubber materials, the first turn-over airbag 3 and the second turn-over airbag 4 are in a fan shape after being inflated, the turning angle is 30 degrees, the second airbag automatically deflates when the first airbag is inflated to form a limit structure for the patient to lie on the right side, the first airbag automatically deflates when the second airbag is inflated to form a limit structure for the patient to lie on the side, when the first airbag and the second airbag are deflated simultaneously, the structure that the patient lies flat is formed, in order to avoid that a part of the back of the patient is pressed for a long time to generate new pressure sores, the upper ends of the first turning-over air bags 3 and the second turning-over air bags 4 are respectively provided with a plurality of first supporting air bags 5 and a plurality of second supporting air bags 6, the first supporting air bags 5 and the second supporting air bags 6 are alternately arranged front and back, the first supporting air bags 5 and the second supporting air bags 6 are respectively in a long circular strip shape and are made of rubber materials, the first supporting air bags 5 and the second supporting air bags 6 are respectively and fixedly connected with the corresponding first turning-over air bags 3 and the corresponding second turning-over air bags 4, the left side of the first turning-over air bags 3 and the right side of the second turning-over air bags 4 are respectively provided with a first air pipe 7 and a second air pipe 8, each first air pipe 7 is communicated with the corresponding first supporting air bags 5, each second air pipe 8 is communicated with the corresponding second supporting air bags 6, in order to achieve the purpose that a patient sits on the back or pads the buttocks when sitting, pressure sores are avoided, a plurality of cushions 9 are arranged at the rear end of the back plate 1, in order to facilitate the device to be placed on a wheelchair, round corners are arranged on the outer sides of the cushions 9 at the left side and the right side, each cushion 9 is provided with a plurality of pressure reducing air bags 10 at the upper end, the pressure reducing air bags 10 are in long round strips and are made of rubber materials, the pressure reducing air bags 10 are fixedly connected with the cushions 9, the positions of the pressure reducing air bags 10 corresponding to the round corners are sealed, the air leakage of the pressure reducing air bags 10 is avoided, an adjusting box 11 is arranged at the front end of the back plate 1, in order to facilitate movement, the front end of the adjusting box 11 is in a handle shape, in order to achieve the purpose of alternately and repeatedly inflating the supporting air bags, a first air cylinder 12 and a second air cylinder 13 are arranged in the adjusting box 11, the length and the diameter of the first air cylinder 12 and the second air cylinder 13 are completely the same as the diameter of the second air cylinder 13, the first air cylinder 12 is communicated with each first air pipe 7, the second air cylinder 13 is communicated with each second air pipe 8, a main air pipe 14 is arranged in the adjusting box 11, the front end of the main air pipe 14 penetrates through the adjusting box 11, the front end of the main air pipe 14 can be communicated with an air pipe of a hospital or a common supercharger, a first bidirectional air pipe 15 is communicated between the main air pipe 14 and the first air cylinder 12, a second bidirectional air pipe 16 is communicated between the main air pipe 14 and the second air cylinder 13, the middle part of the main air pipe 14 is rotatably connected with a switching block 17, when the switching block 17 faces to the first bidirectional air pipe 15, air enters the first air cylinder 12 and the first supporting air bag 5 through the first bidirectional air pipe 15, meanwhile, the second supporting air bag 6 exhausts air, when the switching block 17 faces to the second bidirectional air pipe 16, air enters into the second air cylinder 13 and the second supporting air bag 6 through the second bidirectional air pipe 16, meanwhile, the first supporting air bag 5 exhausts air, and the switching block 17 is matched with the main air pipe 14 to form a structure that the first air cylinder 12 and the second air cylinder 13 are inflated in a reciprocating mode;

in order to achieve the cyclic and reciprocating inflation of the turning airbag at the left side and the right side, a switching driving gear 18 is arranged above the switching block 17, a transmission rack 19 is meshed at the rear end of the switching driving gear 18, a reversing mechanism 20 is arranged at the front end of the transmission rack 19, in order to achieve the purpose of adjusting the reciprocating inflation time interval of the turning airbag, a stepless speed reducing mechanism 21 is arranged at the lower end of the reversing mechanism 20, a transmission rod 22 is arranged at the lower end of the stepless speed reducing mechanism 21, the left end part of the transmission rod 22 penetrates through the adjusting box 11, in order to achieve the purpose of manually controlling the inflation of the turning airbag, a limiting disc 23 is sleeved at the left end of the transmission rod 22, the limiting disc 23 is in threaded fit with the adjusting box 11, an annular groove is formed in the middle part of the limiting disc 23, the outside of the transmission rod 22 is arranged in the annular groove, and a first driven bevel gear 24 is fixedly sleeved at the middle part of the transmission rod, a first supporting spring 25 is arranged at the right end of a first driven bevel gear 24, a limiting disc 23 and a rotating rod are matched with each other to form a limiting structure of the first driven bevel gear 24, a first driving bevel gear 26 is meshed above the first driven bevel gear 24, a worm 27 is fixedly connected at the right end of the rotating rod, a worm wheel 28 is meshed at the rear end of the worm 27, a ventilation mechanism 29 is arranged above the worm wheel 28, a first air duct 30 and a second air duct 31 are arranged at the rear end of the ventilation mechanism 29, the end part of the first air duct 30 penetrates through a back plate 1 and is communicated with a first turnover airbag 3, the end part of the second air duct 31 penetrates through the back plate 1 and is communicated with a second turnover airbag 4, when the limiting disc 23 is rotated, the limiting disc 23 pushes the driving rod 22 to move rightwards to separate the first driven bevel gear 24 from the first driving bevel gear 26, and then the ventilation mechanism 29 can be manually adjusted and controlled by the driving rod 22, when the first driven bevel gear 24 needs to be reset, the limiting disc 23 is rotated reversely, so that the first supporting spring 25 pushes the first driven bevel gear 24 to move leftwards, and the first driven bevel gear 24 is meshed with the first driving bevel gear 26.

In the second embodiment, based on the first embodiment, as shown in fig. 4 to 7, in order to achieve the purpose that the switching block 17 is rotatable, a sliding rack 32 is disposed between the first cylinder 12 and the second cylinder 13, two pistons 33 are disposed at the left and right ends of the sliding rack 32, each piston 33 is disposed in the corresponding first cylinder 12 and second cylinder 13 and can slide left and right along the corresponding first cylinder 12 and second cylinder 13, the pistons 33 are made of rubber and have good sealing performance, the rear end of the sliding rack 32 is engaged with the switching driving gear 18, after air enters the first cylinder 12 or second cylinder 13, the corresponding piston 33 is pushed to slide the sliding rack 32 left and right, so that the switching driving gear 18 rotates in a reciprocating manner, the lower end of the switching driving gear 18 is fixedly connected with a toggle rod 34, the upper end of the switching block 17 is provided with a C-shaped groove 35, the poke rod 34 is arranged in the C-shaped groove 35 and can slide along the C-shaped groove 35, a torsion spring 36 is arranged between the switching block 17 and the switching driving gear 18, a plurality of positioning holes 37 are formed above the main air pipe 14, each positioning hole 37 is internally provided with a positioning slide block 38, each positioning slide block 38 can slide back and forth along the corresponding positioning hole 37, the rear end of each positioning slide block 38 is provided with a second supporting spring 39, each positioning slide block 38 and the corresponding second supporting spring 39 are mutually matched to form a limiting structure of the switching rod, each positioning slide block 38 can enter the switching block 17 and cannot slide out when not influenced by external force, in order to achieve the purpose of exhausting air in the first supporting air bag 5 and the second supporting air bag 6, the middle part of the main air pipe 14 is provided with an exhaust passage 40, the left end of the first air cylinder 12 is communicated with a first three-way air pipe 41, a second three-way air pipe 42 is communicated with the right end of the second air cylinder 13, each first air pipe 7 is communicated with a first three-way air pipe 41, each second air pipe 8 is communicated with a second three-way air pipe 42, each first air pipe 7 is communicated with the first air cylinder 12 through the first three-way air pipe 41, the position where each first air pipe 7 is communicated with the first three-way air pipe 41 is made of a hose material, so that the first turning-over air bag 3 and the second turning-over air bag 4 can be conveniently inflated and deflated, each second air pipe 8 is communicated with the second air cylinder 13 through the second three-way air pipe 42, the position where each second air pipe 8 is communicated with the second three-way air pipe 42 is made of a hose material, so that the first turning-over air bag 3 and the second air bag 4 can be conveniently inflated and deflated, when the driving gear 18 is switched to correspond to the first two-way air pipe 15 during use, air enters the first air cylinder 12 and the first support air bag 5, and air in the second support air bag 6 is exhausted through an exhaust passage 40, at this time, the sliding rack 32 pushes the switching driving gear 18 to rotate rightwards, the switching driving gear 18 rotates to enable the poke rod 34 to slide in the C-shaped groove 35, at this time, the torsion spring 36 stores force, after the poke rod 34 slides to one end of the C-shaped groove 35, the switching block 17 is pushed to rotate for a certain angle to enable the limiting slide block on the right side to move backwards, after the limiting slide block on the right side cannot constrain the switching block 17, the switching block 17 is pushed to rotate leftwards rapidly by the thrust of the torsion spring 36 to enable the limiting slide block on the left side to enter the switching block 17, at this time, the switching block 17 corresponds to the second bidirectional air pipe 16, the sliding rack 32 enables the driving reversing gear to rotate leftwards, meanwhile, the poke rod 34 slides along the C-shaped groove 35, the torsion spring 36 stores force, meanwhile, air enters the second supporting air bag 6, and at this time, air in the first supporting air bag 5 is discharged through the air discharge passage 40.

In the third embodiment, based on the second embodiment, as shown in fig. 1, 9 and 10, in order to achieve that the cushion 9 can be placed on the wheelchair, the cushion 9 can be positioned on the patient and the buttocks, the front end of each cushion 9 is provided with a nylon cloth 43, the nylon cloth 43 is made of nylon material and has good flexibility and wear resistance, the other end of the nylon cloth 43 is fixedly connected with the rear end of the back plate 1, the pressure reducing air bags 10 at the upper end of each cushion 9 are communicated with each other, in order to achieve that the pressure reducing air bags 10 can ensure normal inflation and deflation when the cushion 9 is bent, the pressure reducing air bags 10 at the middle part of the upper end of each cushion 9 are communicated with an air inlet hose 44, the back plate 1 is internally provided with a pressure increasing pipe 45, the pressure increasing pipe 45 has a one-to-three structure, so as to ensure that all the pressure reducing air bags 10 are inflated and deflated synchronously, and avoid the inclination of the patient body caused by alternate inflation and deflation, and each air inlet hose 44 is communicated with the pressure increasing pipe 45, the front end of the pressure increasing pipe 45 is communicated with the first three-way air pipe 41, in order to achieve the purposes of good air permeability of the back of the patient and massage and cushion of the back of the patient, the upper parts of the first turning-over air bag 3 and the second turning-over air bag 4 are jointly provided with a latex pad 46, the latex pad 46 is soft and breathable, the upper end of the latex pad 46 is provided with a plurality of convex round balls which are also made of latex and are integrated with the latex pad 46, when the device is placed on a sickbed during use, the back of a patient is massaged during the inflation or deflation process of the turning-over air bag, the cushion 9 is inflated and deflated to reduce the discomfort caused by the height difference between the device and the sickbed, simultaneously, the buttocks of the patient are prevented from being pressed, when the patient sits on the wheelchair, the cushion 9 is positioned on the buttocks of the patient, the contact between the buttocks of the patient and the seat plate of the wheelchair is reduced, and the buttocks of the patient sitting on the wheelchair for a long time is prevented from being pressed.

Fourth embodiment, on the basis of the first embodiment, as shown in fig. 10 and 11, in order to achieve the purpose of fixing and locking the device when the device is placed on a patient bed, the clamping mechanism 2 includes a first clamping plate 47 and a second clamping plate 48, in order to achieve the purpose of facilitating detachment, the left end of the first clamping plate 47 is rotatably connected with a plurality of connecting screws 49, a first toothed belt 50 is sleeved outside each connecting screw 49, rectangular teeth are arranged inside each first toothed belt 50, a slip phenomenon does not occur during transmission, a first adjusting rod 51 is slidably connected in the connecting screw 49 at the front end, the first adjusting rod 51 is slid out of the corresponding connecting screw 49, then the corresponding connecting screw 49 can be rotated by swinging the first adjusting rod 51, and all the connecting screws 49 are rotated synchronously through the transmission of the first toothed belt 50, the right end of the second clamping plate 48 is fixedly connected with a plurality of connecting screw pipes 52, each connecting screw pipe 52 corresponds to each connecting screw rod 49 in a one-to-one and is in threaded fit with each other, in order to facilitate the operation of connecting and locking the first clamping plate 47 and the second clamping plate 48, the upper sides of the first clamping plate 47 and the second clamping plate 48 are both in an annular structure, when the first clamping plate 47 corresponds to the second clamping plate 48, the connecting screw rods 49 also correspond to the connecting screw rods 49 synchronously, in order to facilitate the connection of the connecting screw rods 49 into the connecting screw pipes 52, the end parts of the connecting screw rods 49 are in a hemispherical structure, each connecting screw rod 49 and the corresponding connecting screw rod 49 are matched with each other to form a limiting structure of the first clamping plate 47 and the second clamping plate 48, the rear ends of the first clamping plate 47 and the second clamping rod are both provided with a round rod, when the first clamping rod and the second clamping rod are combined, each round rod can enter the rear end of the backboard 1, in order to achieve the purpose of controlling the backboard 1 to overturn so as to enable a patient to keep a certain angle lying on the back, the inner sides of the first clamping plate 47 and the second clamping plate 48 are rotatably connected with an overturning screw 53, the outer side of each overturning screw 53 is in threaded fit with an overturning slide block 54, the inner side of each overturning slide block 54 is rotatably connected with an overturning connecting rod 55, the front end of each overturning connecting rod 55 is rotatably connected with the backboard 1, in order to enable the backboard 1 not to be positioned at the upper end of the clamping device, the overturning connecting rods 55 are convenient to detach and mount, the upper end of each overturning connecting rod 55 is of a convex and cylindrical structure, each overturning connecting rod 55 is inserted into the corresponding side of the backboard 1 when the first clamping plate 47 and the second clamping plate 48 are locked with each other, each overturning screw 53 drives the corresponding overturning slide block 54 to move forwards when rotating, so that the overturning connecting rods 55 at two sides synchronously overturn and support the backboard 1 to rotate upwards, the front end of each turnover screw 53 is fixedly sleeved with a second driven bevel gear 56, the left side of the first clamping rod is rotatably connected with a connecting male rod 57, the side of the second clamping plate 48 is rotatably connected with a connecting female rod 58, the outer sides of the connecting male rod 57 and the connecting female rod 58 are respectively fixedly sleeved with a second driving bevel gear 59, each second driving bevel gear 59 is mutually meshed with the corresponding second driven bevel gear 56, the relative positions of each second driving bevel gear 59 and the corresponding second driven bevel gear 56 are different, so the thread directions of the turnover screws 53 on the left side and the right side are opposite, in order to achieve the purpose of synchronous rotation of each second driving bevel gear 59, the threaded connection has a self-locking function, the left end of the connecting rod female rod can be provided with a plurality of meshing notches 60, and the right end of the connecting male rod 57 is provided with a plurality of meshing protrusions 61, in order to facilitate the connection male rod 57 to enter the connection female rod 58, the end of the connection male rod 57 is in a semi-sphere shape, each engagement protrusion 61 and the corresponding engagement notch 60 are matched with each other to form a structure that the connection male rod 57 and the connection female rod 58 rotate coaxially, in order to achieve the purpose of facilitating the adjustment of the rotation of the connection male rod 57 and the connection female rod 58, a second adjustment rod 62 is connected in the connection male rod 57 in a sliding manner, when in use, the first locking rod and the second locking rod are placed on a sickbed, so that the connection screw 49 and the connection screw 52 are positioned at the lower end of the sickbed, then the positions of the first clamping plate 47 and the second clamping plate 48 are adjusted to enable each connection screw 49 to enter the corresponding connection screw 52, simultaneously enable the connection male rod 57 to enter the connection female rod 58, then the backboard 1 is placed at a proper position, then the first adjustment rod 51 is rotated to enable each clamping screw to be connected with the corresponding clamping screw to enable the first clamping plate 47 and the second clamping plate 48 to clamp the backboard 1, then the second adjusting rod 62 slides out, the second adjusting rod 62 is shaken to control the male connecting rod 57 and the female connecting rod 58 to rotate, so that the back plate 1 is turned over, when the back plate 1 needs to be detached and placed at the upper end of the wheelchair, the first adjusting rod 51 is rotated reversely to separate the first clamping plate 47 from the second clamping plate 48, then the back plate 1 can be detached, and the device can be completely placed at the upper end of the wheelchair except the clamping mechanism 2.

Fifth embodiment, based on the first embodiment, as shown in fig. 12, to achieve the better object, the reversing mechanism 20 includes a supporting plate 63, the supporting plate 63 is fixedly connected to the adjusting box 11, the upper end of the supporting plate 63 is rotatably connected to a reversing driving gear 64, the reversing driving gear 64 is engaged with the transmission rack 19, a first reversing gear 65 is engaged with the front side of the reversing driving gear 64, a second reversing gear 66 is engaged with the left end of the first reversing gear 65, a third reversing gear 67 is engaged with the rear side of the driving gear, a reversing driven gear 68 is engaged with the third reversing gear 67 and the second reversing gear 66, the reversing driven gear 68 is rotatably connected to the supporting plate 63, a gear bracket 69 is rotatably connected to each of the first reversing gear 65 and the third reversing gear 67, each gear bracket 69 is slidably connected to the supporting plate 63, the end of each gear bracket 69 is provided with a third supporting spring 70, when in use, when the transmission rack 19 moves leftwards to enable the reversing driving gear 64 to rotate rightwards, at the time, the third reversing gear 67 moves forwards under the rotating tangential force of the reversing driving gear 64 and the thrust of the corresponding third supporting spring 70, the third reversing gear 67 is simultaneously meshed with the reversing driving gear 64 and the reversing driven gear 68, at the time, the first reversing gear 65 moves forwards under the rotating tangential force of the reversing driving gear 64 to enable the corresponding gear bracket 69 to move forwards, at the time, the first reversing gear 65 cannot be normally meshed with the second reversing gear 66 and the reversing driving gear 64, when the power transmission rack moves rightwards, the reversing driving gear 64 rotates leftwards, at the time, the first reversing gear 65 moves backwards under the thrust of the reversing driving gear 64 and the corresponding third supporting spring 70, and enables the first reversing gear 65 and the second reversing gear 66, The direction-changing driving gears 64 are engaged with each other, the second direction-changing gear 66 is engaged with the driven direction-changing gear, and at the same time, the third direction-changing gear 67 is moved backward by the tangential force of the rotation of the direction-changing driving gears 64, so that the corresponding gear holder 69 slides backward, and at this time, the third direction-changing gear 67 cannot be engaged with the direction-changing driving gears 64 and the direction-changing driven gears 68.

Sixth embodiment, based on the fifth embodiment, as shown in fig. 8 and 12, in order to achieve the purpose of adjusting the time interval between the left and right postures and the lying posture of the patient, the stepless speed reduction mechanism 21 includes a driving pulley 71 and a driven mechanism 72, the driving pulley 71 and the reversing driven gear 68 rotate coaxially, the driven mechanism 72 includes a supporting rod 78, the supporting rod 78 is rotatably connected with the adjusting box 11, the lower end of the supporting rod 78 is fixedly connected with the first driving bevel gear 26, a plurality of driven pulleys 79 are slidably connected to the outside of the supporting rod 78, a plurality of fourth supporting springs 80 are disposed between each pulley and the supporting rod 78, a second toothed belt 73 is sleeved between the driving pulley 71 and the driven mechanism 72, a plurality of rectangular grooves are disposed on each driven pulley 79 and the outer side of the driving pulley 71, a plurality of rectangular protrusions are disposed on the inner side of the second toothed belt 73, so that the phenomenon of slipping is not generated during the transmission of the second toothed belt 73, the transmission ratio of the driving belt wheel 71 and the driven mechanism 72 can be controlled by adjusting the diameters of a plurality of driven belt wheels 79 relative to a support rod 78 in the driven mechanism 72, thereby achieving the purpose of stepless adjustment, in order to adjust the diameter of the driven mechanism 72, a squeezing belt wheel 74 is arranged at the front side of the second toothed belt 73, a traveling slide block 75 is arranged at the middle part of the squeezing belt wheel 74, the squeezing belt wheel 74 is rotationally connected with the traveling slide block 75, a squeezing screw 76 is in threaded fit with the upper end and the lower end of the traveling slide block 75, an adjusting disc 77 is meshed with the front ends of the two squeezing screw rods 76, the adjusting disc 77 and each squeezing screw rod 76 are rotationally connected with the adjusting box 11, the rear end of the adjusting disc 77 and the front end of each squeezing screw rod 76 are in a gear shape, the rear end of the adjusting disc 77 is meshed with the front end of each squeezing screw rod 76, the front end of the adjusting disk 77 penetrates the front end of the adjusting box 11 and is disposed at the front part of the adjusting box 11, in order to rotate the adjusting disk 77, the front end of the adjusting disk 77 is in a knob shape, when in use, the adjusting disk 77 is rotated to enable the traveling slider 75 to move backwards along the extrusion screw 76, the extrusion pulley 74 simultaneously extrudes the second toothed belt 73 backwards, the second toothed belt 73 is extruded to extrude the driven pulley 79 meshed with the second toothed belt 73 into the supporting rod 78 under pressure, the diameter of the driven mechanism 72 is reduced, when the adjusting disk 77 is rotated reversely to enable the traveling slider 75 to move forwards, the extrusion pulley 74 synchronously moves forwards, at the moment, each fourth supporting spring 80 supports the corresponding driven pulley 79, and the diameter of the driven mechanism 72 is increased.

Seventh embodiment, based on the second embodiment, as shown in fig. 6 and 13, in order to achieve the purpose that the device can automatically switch the posture of the patient, the ventilation mechanism 29 includes a ventilation plate 81, an air inlet pipe 82 is connected to the upper end of the ventilation plate 81, the other end of the air inlet pipe 82 is connected to the main air pipe 14, a driven sheave 83 is fixedly connected to the lower end of the ventilation plate 81, the driven sheave 83 is a six-minute sheave, a driving sheave 84 is disposed on the left side of the driven sheave 83, the driving sheave 84 and the worm wheel 28 coaxially rotate, the driving sheave 84 rotates a circle to push the driven sheave 83 to rotate the sheave 60 °, the driving sheave 84 and the driven sheave 83 cooperate with each other to form a structure that the ventilation plate 81 intermittently rotates, an air inlet groove 85 and a plurality of air outlet grooves 86 are disposed in the ventilation plate 81, the air inlet pipe 82 is connected to the air inlet groove 85, the air outlet grooves 86 penetrate through the ventilation plate 81, the outside of the air exchanging plate 81 is provided with a communicating plate 87, the communicating plate 87 is internally provided with a first air outlet groove 88 and a second air outlet groove 89, the first air outlet groove 88 is communicated with the first air duct 30, the second air outlet groove 89 is communicated with the second air duct 31, when in use, when the air inlet groove 85 is corresponding to the first air outlet groove 88, air enters the first turnover air bag 3 through the air inlet groove 85 and the first air duct 30, at the same time, air in the second turnover air bag 4 enters the air outlet groove 86 through the second air duct 31 and the second air outlet groove 89, and then is discharged from the air outlet groove 86, at the same time, a patient keeps a right-inclined lateral lying posture, when the driving grooved wheel 84 rotates for a circle, the driven grooved wheel 83 rotates for 60 degrees, simultaneously the air exchanging plate 81 rotates for 60 degrees, so that the air inlet groove 85 is communicated with the second air outlet groove 89, the air enters the second turnover air bag 4 through the second air duct 31, at the same time, the air in the first turnover air bag 3 enters the air outlet groove 86 through the first air duct 30 and the second air outlet groove 89, then the air is discharged from the air discharge groove 86, at the moment, the patient keeps a left-inclined lateral lying posture, then the driving grooved pulley 84 drives the driven grooved pulley 83 to rotate 60 degrees again, meanwhile, the air exchange plate 81 rotates 60 degrees, the air inlet groove 85 corresponds to the communicating plate 87, the air cannot be discharged, at the moment, the air in the first turning over air bag 3 enters the air discharge groove 86 through the first air duct 30 and the first air outlet groove 88, the air in the second turning over air bag 4 enters the air discharge groove 86 through the second air duct 31 and the second air outlet groove 89, and the first turning over air bag 3 and the second turning over air bag 4 are both deflated, so that the aim of lying the patient is fulfilled.

The working process of the invention is as follows: if the back plate is used in a ward, a bed head of a common sickbed is required to be detached, then the first locking rod and the second locking rod are placed on the sickbed, the connecting screw rods 49 and the connecting screw tubes 52 are positioned at the lower end of the sickbed, then the positions of the first clamping plate 47 and the second clamping plate 48 are adjusted to enable each connecting screw rod 49 to enter the corresponding connecting screw tube 52, meanwhile, the connecting male rod 57 enters the connecting female rod 58, then the back plate 1 is placed at a proper position, then the first adjusting rod 51 slides out of the corresponding connecting screw rod 49, then the first adjusting rod 51 is shaken to enable the corresponding connecting screw rod 49 to rotate, all the connecting screw rods 49 synchronously rotate through the transmission of the first toothed belt 50, each clamping screw rod is connected with the corresponding clamping screw tube to enable the first clamping plate 47 and the second clamping plate 48 to clamp the back plate 1, and then an air pipe of the hospital is communicated with the main air pipe 14, then, a latex cushion 46 is placed above the first turning air bag 3 and the second turning device bag, then a patient lies above the latex cushion 46, air enters the first air cylinder 12 or the second air cylinder 13 and pushes the corresponding piston 33 to slide the sliding rack 32, so that the switching driving gear 18 rotates, when the switching driving gear 18 corresponds to the first bilateral air pipe 15, air enters the first air cylinder 12 and the first supporting air bag 5, air in the second supporting air bag 6 is discharged, at the same time, the sliding rack 32 pushes the switching driving gear 18 to rotate rightwards, the switching driving gear 18 rotates to make the shifting rod 34 slide in the C-shaped groove 35, at the same time, the torsion spring 36 stores force, when the shifting rod 34 slides to one end of the C-shaped groove 35, the switching block 17 is pushed to rotate a certain angle to make the right limit slide block move backwards, when the right limit slide block cannot restrict the switching block 17, the switching block 17 is pushed by the torsion spring 36 to rotate leftwards quickly to make the left limit slide block enter the switching block 17, at the moment, the switching block 17 corresponds to the second bidirectional air pipe 16, the sliding rack 32 enables the driving reversing gear to rotate leftwards, the poke rod 34 slides along the C-shaped groove 35, the torsion spring 36 stores force, air enters the second supporting air bag 6, at the moment, the air in the first supporting air bag 5 is exhausted through the exhaust passage 40, when the driving gear 18 is switched to enable the driving rack 19 to move leftwards to enable the reversing driving gear 64 to rotate rightwards, at the moment, the third reversing gear 67 moves forwards under the tangential force generated by the rotation of the reversing driving gear 64 and the thrust of the corresponding third supporting spring 70, the third reversing gear 67 is simultaneously meshed with the reversing driving gear 64 and the reversing driven gear 68, at the moment, the first reversing gear 65 moves forwards under the tangential force generated by the rotation of the reversing driving gear 64 to enable the corresponding gear bracket 69 to move forwards, at the moment, the first reversing gear 65 cannot be normally meshed with the second reversing gear 66 and the reversing driving gear 64, when the switching driving gear 18 moves the power transmission rack to the right, the reversing driving gear 64 rotates to the left, at this time, the first reversing gear 65 is pushed by the reversing driving gear 64 and the corresponding third supporting spring 70 to move backward, so that the first reversing gear 65 is engaged with the second reversing gear 66 and the reversing driving gear 64, the second reversing gear 66 is engaged with the driven reversing gear, at the same time, the third reversing gear 67 is pushed backward by the tangential force of the rotation of the reversing driving gear 64, so that the corresponding gear bracket 69 slides backward, at this time, the third reversing gear 67 cannot be engaged with the reversing driving gear 64 and the reversing driven gear 68, so that the driven reversing gear rotates only to one side, so that the driving pulley 71 rotates to one side, the adjusting disc 77 rotates to make the traveling slider 75 move backward along the extrusion screw 76, and at the same time, the extrusion pulley 74 extrudes the second toothed belt 73 backward, the second toothed belt 73 is pressed to extrude the driven pulley 79 engaged with the second toothed belt 73 into the support rod 78, the diameter of the driven mechanism 72 is reduced, the transmission ratio of the driving pulley 71 and the driven mechanism 72 is reduced, when the transmission ratio needs to be increased, the reverse rotation adjusting disc 77 enables the traveling slider 75 to move forward, the extruding pulleys 74 synchronously move forward, each fourth supporting spring 80 supports the corresponding driven pulley 79, the diameter of the driven mechanism 72 is increased, when the driven mechanism 72 rotates to enable the first driving bevel gear 26 to rotate, the first driving bevel gear 26 drives the transmission rod 22 to rotate through the first driven bevel gear 24, then the worm 27 drives the worm wheel 28 to rotate, the worm wheel 28 enables the driving sheave 84 to rotate, the driving sheave 84 rotates for one circle to drive the driven sheave 83 to rotate for 60 degrees, when the air inlet groove 85 corresponds to the first air outlet groove 88, air enters the first turnover air bag 3 through the air inlet groove 85 and the first air guide tube 30, at the moment, air in the second turning-over air bag 4 enters an exhaust groove 86 through a second air duct 31 and a second air outlet groove 89 and is then exhausted from the exhaust groove 86, at the moment, the patient keeps a right-inclined lateral lying posture, when the driving grooved pulley 84 rotates for a circle, the driven grooved pulley 83 rotates for 60 degrees and the air exchange plate 81 rotates for 60 degrees at the same time, the air inlet groove 85 is communicated with the second air outlet groove 89, the air enters the second turning-over air bag 4 through the second air duct 31, at the moment, the air in the first turning-over air bag 3 enters the exhaust groove 86 through the first air duct 30 and the second air outlet groove 89 and is then exhausted from the exhaust groove 86, at the moment, the patient keeps a left-inclined lateral lying posture, then the driving grooved pulley 84 drives the driven grooved pulley 83 to rotate for 60 degrees again and the air exchange plate 81 rotates for 60 degrees so that the air inlet groove 85 corresponds to the communication plate 87 and the air cannot be exhausted, and at the moment, the air in the first turning-over air bag 3 enters the exhaust groove 86 through the first air duct 30 and the first air outlet groove 88, air in the second turning-over air bag 4 enters the air exhaust groove 86 through the second air duct 31 and the second air outlet groove 89, so that the first turning-over air bag 3 and the second turning-over air bag 4 are deflated, the aim of lying a patient is achieved, if the patient needs to keep only one posture due to injury or other reasons on one side of the patient, the limiting disc 23 can be rotated, the limiting disc 23 pushes the transmission rod 22 to move rightwards to separate the first driven bevel gear 24 from the first driving bevel gear 26, then the transmission rod 22 can be manually adjusted to rotate to control the ventilation mechanism 29, the limiting disc 23 is rotated reversely when the first driven bevel gear 24 needs to be reset, the first support spring 25 pushes the first driven bevel gear 24 to move leftwards to mesh the first driven bevel gear 24 with the first driving bevel gear 26, the back of the patient needs to lie at a certain angle, the second adjusting rod 62 can slide out, the second adjusting rod 62 is shaken to control the connecting male rod 57 and the connecting female rod 58 to rotate, the corresponding overturning slide block 54 is driven to move forwards when each overturning screw 53 rotates, the two overturning connecting rods 55 synchronously overturn to support the back plate 1 to overturn upwards, if a patient needs to sit on the wheelchair, the first adjusting rod 51 can rotate reversely to separate the first clamping plate 47 from the second clamping plate 48, then the back plate 1 can be detached, the device can be placed on the upper end of the wheelchair except the clamping mechanism 2, and then a portable air compressor is connected to provide air pressure for the device.

The invention has novel structure, ingenious conception and simple and convenient operation, effectively achieves the aim of automatically changing the posture of a patient through the design, avoids the problem that the patient is locally stressed, achieves the aim of being used on both a sickbed and a wheelchair, overcomes the defect that the upper half of the patient cannot be raised, achieves the aim of adjusting the posture switching time interval of the patient, optimizes the air permeability of the back of the patient, reduces the probability of pressure sores generated on the hip of the patient when the patient sits up or stands, achieves the aim of changing the posture of the patient through a manual control device, achieves the aim of padding and massaging the back of the patient, and lightens the labor pressure of medical staff.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a sore nursing device is pressed to back, includes backplate (1), its characterized in that, the lower extreme of backplate (1) is equipped with a clamping mechanism (2), the upper end bilateral symmetry of backplate (1) is equipped with an inflatable first gasbag (3) and a second gasbag (4) of standing up, and the second gasbag is automatic to be deflated when first gasbag is aerifyd, forms the limit structure that the patient crouched to the right side, and the first gasbag is automatic to be deflated when the second gasbag is aerifyd, forms the limit structure that the patient crouched to the left side, when first gasbag and second gasbag simultaneously deflate, forms the structure that the patient crouched, the upper end of first gasbag (3) of standing up and second gasbag (4) all is equipped with a plurality of first support gasbag (5) and a plurality of second support gasbag (6), and first support gasbag (5) and second support gasbag (6) set up around alternately, the left side of first gasbag (3) of standing up and the right side of second gasbag (4) are equipped with a respectively and stand up The air purifier comprises a first air pipe (7) and a second air pipe (8), wherein each first air pipe (7) is communicated with a corresponding first supporting air bag (5), each second air pipe (8) is communicated with a corresponding second supporting air bag (6), the rear end of a back plate (1) is provided with a plurality of cushions (9), the upper end of each cushion (9) is provided with a plurality of pressure reducing air bags (10), the front end of the back plate (1) is provided with an adjusting box (11), a first air cylinder (12) and a second air cylinder (13) are arranged in the adjusting box (11), the first air cylinder (12) is communicated with each first air pipe (7), the second air cylinder (13) is communicated with each second air pipe (8), a main air pipe (14) is arranged in the adjusting box (11), the front end of the main air pipe (14) penetrates through the adjusting box (11), and a first bidirectional air pipe (15) is communicated between the main air pipe (14) and the first air cylinder (12), a second bidirectional air pipe (16) is communicated between the main air pipe (14) and the second air cylinder (13), the middle part of the main air pipe (14) is rotatably connected with a switching block (17), and the switching block (17) and the main air pipe (14) are mutually matched to form a structure that the first air cylinder (12) and the second air cylinder (13) are inflated in a reciprocating manner;

a switching driving gear (18) is arranged above the switching block (17), wherein the lower end of the switching driving gear (18) is fixedly connected with a poke rod (34), the upper end of the switching block (17) is provided with a C-shaped groove (35), the poke rod (34) is arranged in the C-shaped groove (35) and slides along the C-shaped groove (35), the rear end of the switching driving gear (18) is meshed with a transmission rack (19), the front end of the transmission rack (19) is provided with a reversing mechanism (20), the reversing mechanism (20) comprises a supporting plate (63), the upper end of the supporting plate (63) is rotatably connected with a reversing driving gear (64), the transmission rack (19) is mutually meshed with the reversing driving gear (64) of the reversing mechanism (20), and the front side of the reversing driving gear (64) is meshed with a first reversing gear (65), a second reversing gear (66) is meshed at the left end of the first reversing gear (65), a third reversing gear (67) is meshed at the rear side of the driving gear, the third reversing gear (67) and the second reversing gear (66) are jointly meshed with a reversing driven gear (68), the first reversing gear (65) and the third reversing gear (67) are both rotatably connected with a gear support (69), each gear support (69) is slidably connected with the support plate (63), a third support spring (70) is arranged at the tail end of each gear support (69), a stepless speed reducing mechanism (21) is arranged at the lower end of the reversing mechanism (20), the stepless speed reducing mechanism (21) comprises a driving pulley (71) and a driven mechanism (72), and the driving pulley (71) and the reversing driven gear (68) rotate coaxially, the lower end of the stepless speed reducing mechanism (21) is provided with a transmission rod (22), the left end part of the transmission rod (22) penetrates through the adjusting box (11), the left end of the transmission rod (22) is sleeved with a limiting disc (23), the limiting disc (23) is in threaded fit with the adjusting box (11), the middle part of the transmission rod (22) is fixedly sleeved with a first driven bevel gear (24), the right end of the first driven bevel gear (24) is connected with a first supporting spring (25), the limiting disc (23) and the transmission rod (22) are matched with each other to form a limiting structure of the first driven bevel gear (24), a first driving bevel gear (26) is meshed above the first driven bevel gear (24), the driven mechanism (72) comprises a supporting rod (78), the lower end of the supporting rod (78) is fixedly connected with the first driving bevel gear (26), the right end of the transmission rod (22) is fixedly connected with a worm (27), a worm wheel (28) is meshed at the rear end of the worm (27), a ventilation mechanism (29) is arranged above the worm wheel (28), a first air duct (30) and a second air duct (31) are arranged at the rear end of the ventilation mechanism (29), the ventilation mechanism (29) comprises a ventilation plate (81), the upper end of the ventilation plate (81) is communicated with an air inlet pipe (82), the other end of the air inlet pipe (82) is communicated with the main air pipe (14), the lower end of the ventilation plate (81) is fixedly connected with a driven sheave (83), a driving sheave (84) is arranged on the left side of the driven sheave (83), the driving sheave (84) and the worm wheel (28) rotate coaxially, the driving sheave (84) and the driven sheave (83) are matched with each other to form an intermittent rotation structure of the ventilation plate (81), an air inlet groove (85) and a plurality of exhaust grooves (86) are formed in the ventilation plate (81), the outside of breather plate (81) is equipped with a intercommunication board (87), and it goes out gas groove (89) to have seted up a first gas groove (88) and a second in intercommunication board (87) to go out, and first gas groove (88) and first air duct (30) intercommunication go out, and second gas groove (89) and second air duct (31) intercommunication, the tip of first air duct (30) runs through backplate (1) and communicates with first turnover gasbag (3), and the tip of second air duct (31) runs through backplate (1) and communicates with second turnover gasbag (4).

2. The back pressure sore nursing device according to claim 1, characterized in that a sliding rack (32) is arranged between the first cylinder (12) and the second cylinder (13), a piston (33) is arranged at each of the left and right ends of the sliding rack (32), each piston (33) is arranged in the corresponding first cylinder (12) and second cylinder (13) and slides left and right along the corresponding first cylinder (12) and second cylinder (13), the rear end of the sliding rack (32) is engaged with the switching driving gear (18), a torsion spring (36) is arranged between the switching block (17) and the switching driving gear (18), a plurality of positioning holes (37) are arranged above the main air pipe (14), a positioning slider (38) is arranged in each positioning hole (37), each positioning slider (38) slides back and forth along the corresponding positioning hole (37), the rear end of each positioning sliding block (38) is provided with a second supporting spring (39), each positioning sliding block (38) is matched with the corresponding second supporting spring (39) to form a limiting structure of the switching rod, the middle of the main air pipe (14) is provided with an exhaust passage (40), the left end of the first air cylinder (12) is communicated with a first three-way air pipe (41), the right end of the second air cylinder (13) is communicated with a second three-way air pipe (42), each first air pipe (7) is communicated with the first three-way air pipe (41), and each second air pipe (8) is communicated with the second three-way air pipe (42).

3. The back pressure sore nursing device according to claim 2, characterized in that a nylon cloth (43) is arranged at the front end of each cushion (9), the other end of the nylon cloth (43) is fixedly connected with the rear end of the back plate (1), the pressure reducing air bags (10) at the upper end of each cushion (9) are communicated with each other, the pressure reducing air bags (10) at the middle part of the upper end of each cushion (9) are communicated with an air inlet hose (44), a pressure increasing pipe (45) is arranged in the back plate (1), each air inlet hose (44) is communicated with the pressure increasing pipe (45), the front end of the pressure increasing pipe (45) is communicated with a first three-way air pipe (41), and an emulsion pad (46) is arranged above the first turn-over air bag (3) and the second turn-over air bag (4).

4. The back pressure sore nursing device according to claim 1, characterized in that the clamping mechanism (2) comprises a first clamping plate (47) and a second clamping plate (48), the left end of the first clamping plate (47) is rotatably connected with a plurality of connecting screws (49), a first toothed belt (50) is sleeved outside each connecting screw (49), a first adjusting rod (51) is connected in the connecting screw (49) at the front end in a sliding manner, a plurality of connecting screw pipes (52) are fixedly connected at the right end of the second clamping plate (48), each connecting screw pipe (52) is in one-to-one correspondence with each connecting screw (49) and in threaded fit with each other, each connecting screw (49) is in fit with the corresponding connecting screw (49) to form a limit structure of the first clamping plate (47) and the second clamping plate (48), the inner sides of the first clamping plate (47) and the second clamping plate (48) are rotatably connected with a turnover screw (53), the outer side of each turnover screw (53) is in threaded fit with a turnover sliding block (54), the inner side of each turnover sliding block (54) is rotatably connected with a turnover connecting rod (55), the front end of each turnover connecting rod (55) is rotatably connected with the back plate (1), the front end of each turnover screw (53) is fixedly sleeved with a second driven bevel gear (56), the left side of the first clamping plate (47) is rotatably connected with a connecting male rod (57), the side of the second clamping plate (48) is rotatably connected with a connecting female rod (58), the outer sides of the connecting male rod (57) and the connecting female rod (58) are respectively and fixedly sleeved with a second driving bevel gear (59), and each second driving bevel gear (59) is mutually meshed with the second driven bevel gear (56) on the corresponding side, connect the left end of female pole (58) and be equipped with a plurality of meshing breach (60), the right-hand member portion of connecting public pole (57) is equipped with a plurality of meshing archs (61), and every meshing arch (61) mutually supports with the meshing breach (60) that correspond and forms and connect public pole (57) and be connected female pole (58) coaxial pivoted structure, it has a second regulation pole (62) to connect public pole (57) sliding connection.

5. The back pressure sore nursing device according to claim 4, characterized in that a plurality of driven pulleys (79) are slidably connected to the outside of the supporting rod (78), a plurality of fourth supporting springs (80) are arranged between each pulley and the supporting rod (78), a second toothed belt (73) is sleeved between the driving pulley (71) and the driven mechanism (72), an extrusion pulley (74) is arranged on the front side of the second toothed belt (73), a traveling slider (75) is arranged in the middle of the extrusion pulley (74), an extrusion screw (76) is in threaded fit with the upper end and the lower end of the traveling slider (75), an adjusting disc (77) is meshed with the front ends of the two extrusion screws (76), and the front end of the adjusting disc (77) penetrates through the front end of the adjusting box (11) and is arranged in the front of the adjusting box (11).