A nursing bed with risk monitoring, pressure relief and assisting turning functions

Abstract

The present invention provides a nursing bed with risk monitoring, pressure relief and auxiliary turning functions, including a bed frame, a slat frame and a mattress; the slat frame is divided into left and right partitions and is mounted on the bed frame, an auxiliary turning mechanism is provided at the bottom of the bed frame, and a pressure sensor is provided in the mattress; the pressure sensor is connected to an information collector, which is connected to a host processor, and the host processor monitors and analyzes the pressure in real time; when the local pressure on the mattress is greater than the bedsore risk warning pressure and lasts longer than the bedsore risk warning time, the host processor issues a warning and controls the auxiliary turning mechanism to turn over; an airbag core layer is also provided in the mattress; when the local pressure on the mattress is greater than the pressure relief start pressure and lasts longer than the pressure relief start time, the airbag core layer releases pressure. The present invention can monitor the pressure of the human-bed interface in real time, and based on the monitoring results, combined with the pressure relief and auxiliary turning design, it can meet the different support needs of people of different body shapes and realize intelligent pressure relief and care.

Description

Technical Field

[0001] The present invention relates to the technical field of beds, and in particular to a nursing bed with risk monitoring, pressure relief and turning assistance functions. Background Art

[0002] According to statistics, the biggest harm to the elderly and the most difficult problem to solve during nursing care is bedsores. Studies have shown that the incidence of bedsores in patients over 40 years old is 6-7 times that of patients under 40 years old, and 71% of bedsores occur in the elderly over 70 years old. The mortality rate of the elderly with bedsores increases by 4 times, and the mortality rate increases by 6 times if bedsores do not heal.

[0003] Bedsores are also called pressure ulcers. When the local pressure acting on the human body exceeds 2 times the pressure of the arteriolar blood vessels during sleep or rest, and lasts for 1-2 hours, it can block the perfusion of capillaries to tissues, causing tissue hypoxia. If the pressure exceeds 2 hours, it will cause irreversible tissue damage. Generally speaking, when the local pressure on the human body is too high, the overly concentrated pressure will cause local ischemia in the muscle and soft tissues of the human body. Local ischemia will cause metabolism to produce a substance that stimulates nerve endings, prompting people to adjust their posture and increase their movements. However, for the elderly, due to the slow movements and long duration of movements such as turning over, it is easy to make sleep intermittent and difficult to maintain. In addition, for the elderly, with the increase of age, geriatric diseases continue to increase. Some elderly people are inconvenient to move, need to stay in bed for a long time, and even have difficulty turning over. Under the dual effects of pressure and time, the elderly are very likely to develop bedsores. Therefore, how to assist the elderly to turn over and improve the quality of life and sleep of the elderly is of great significance.

[0004] In addition, the common smart nursing beds for the elderly are mainly used to monitor the heart rate and breathing of the elderly, and nursing beds with pressure relief care and monitoring functions are relatively rare. Relevant studies have shown that mattresses that can make the spine in a natural curvature and have a good fit have better pressure relief effects. Due to differences in gender, age and body shape, different people have different gravity distribution and pressure bearing capacity in different parts, and the support requirements for mattresses are also different. Only by achieving reasonable support for each part can the spine be kept in a natural curvature and improve the fit between people and beds. Therefore, it is of great significance to design a partition structure and adjust the support performance of each area to adapt to people of different body shapes and weights to achieve pressure relief. However, although some nursing beds on the market are currently designed with partition structures, each bed can only adapt to people of one body type and cannot meet the support needs of people of different body types. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a nursing bed with risk monitoring, pressure relief and assisted turning functions. The bed can monitor the pressure of the person-bed interface in real time, and based on the monitoring results, combined with the pressure relief and assisted turning design, while meeting the different support needs of people of different body shapes, realize intelligent pressure relief and intelligent care, and effectively avoid the occurrence of bedsores.

[0006] The present invention adopts the following technical solutions to solve the above technical problems:

[0007] A nursing bed with risk monitoring, pressure relief and turning-over assistance functions, comprising a bed frame, a slat frame and a mattress; the slat frame is divided into left and right partitions and is integrally mounted on the bed frame; an auxiliary turning-over mechanism is provided at the inner bottom of the bed frame for relative turning between the left and right partitions on the slat frame; the mattress is placed on the slat frame, a pressure sensor is arranged in the mattress, the pressure sensor is connected to an information collector, and the information collector is connected to a host processor;

[0008] The information collector collects information from the pressure sensor to obtain a depression matrix of the human-bed interface, and transmits the depression matrix of the human-bed interface to the host processor, which monitors and analyzes the depression matrix of the human-bed interface in real time; when the host processor measures that the local pressure value on the mattress is greater than the bedsore risk warning pressure value, and the duration is greater than the bedsore risk warning time, the host processor issues a bedsore risk warning, and after receiving a turning over instruction, controls the auxiliary turning over mechanism to turn over the slat frame;

[0009] In addition, an airbag core layer is arranged in the mattress; when the local pressure value on the mattress is greater than the pressure relief start pressure value and the duration is greater than the pressure relief start time value, the airbag core layer in the local mattress releases pressure to complete the pressure relief.

[0010] As one of the preferred embodiments of the present invention, the nursing bed also includes a bed screen and guardrails; the bed screen is specifically arranged at the head of the bed frame, and guardrails are installed upward on the left and right sides of the bed frame. The slat frame is arranged on the bed frame between the two guardrails through a corner bracket, and the mattress is placed on the slat frame.

[0011] As one of the preferred embodiments of the present invention, the mattress includes an upper mattress and a lower mattress located below the upper mattress; the upper mattress is an integral whole, including an upper cushioning layer and an upper fabric composite layer covering the outer periphery of the upper cushioning layer; the lower mattress is divided into three parts: left, middle and right, and is respectively divided longitudinally to include an airbag core layer, a lower cushioning layer located below the airbag core layer, and a lower fabric composite layer covering the outer periphery of the combination of the airbag core layer and the lower cushioning layer; wherein the pressure sensor is fixedly distributed within the upper fabric composite layer.

[0012] As one of the preferred embodiments of the present invention, the upper fabric composite layer and the lower fabric composite layer respectively include an inner fabric, an outer fabric and a sponge layer, and the sponge layer is located between the inner fabric and the outer fabric; the upper cushioning layer includes a latex layer and a memory foam layer, and the latex layer is arranged on the memory foam layer; the lower cushioning layer includes a cut sponge layer.

[0013] As one of the preferred embodiments of the present invention, the airbag core layer is specifically an independent airbag layer or a latex independent tube layer with airbags; the independent airbag layer includes a first sponge frame, in which a plurality of independent airbags are arranged vertically, and an air suction and deflation device is provided at the bottom of each independent airbag, and the air suction and deflation device is connected to the host processor; the latex independent tube layer with airbags includes a second sponge frame, in which a plurality of independent airbags latex independent tubes are arranged vertically, and each airbag latex independent tube is wrapped with a small airbag.

[0014] As one of the preferred embodiments of the present invention, when the airbag core layer is an independent airbag layer: when the local pressure value on the mattress is greater than 6.6 kPa and lasts for more than 10 minutes, the host processor controls the independent airbags in the local mattress to release pressure to achieve pressure relief.

[0015] As one of the preferred embodiments of the present invention, when the airbag core layer is a latex independent tube layer: when the local pressure on the mattress is not large and the duration is not long, it is supported by the airbag latex independent tube; when the local pressure is too large and the duration is too long, the airbag latex independent tube is compressed and the height is reduced, and the independent tube and the small airbag are used to support it synchronously to complete the pressure relief (the pressure critical value and time critical value are specifically related to the "latex material", "molding process", etc., and can be made into different critical values).

[0016] As one of the preferred embodiments of the present invention, the first sponge frame and the second sponge frame are both foam sponge frames or latex sponge frames.

[0017] As one of the preferred embodiments of the present invention, the auxiliary turning mechanism includes two rotating support frames distributed in a left-right symmetrical shape; each of the rotating support frames includes a rotating frame, a motor, a motor output shaft, a support shaft seat and a supporting cross frame; wherein the supporting cross frame is arranged on the inner bottom of the bed frame along the width direction of the bed, and a supporting shaft seat is fixed on the supporting cross frame; the motor output shaft is extended along the length direction of the bed, and the shaft body of the motor output shaft is sleeved with a ring; one end of the ring is fixedly connected to the motor output shaft, and the other end thereof is rotatably matched with the supporting shaft seat; the rotating frame is arranged on one side of the motor output shaft, one side end of the rotating frame is fixedly connected to the motor output shaft through the ring, and the upper end of the rotating frame is fixedly connected to the bottom of the corresponding row of skeletons; wherein the input end of the motor output shaft is connected to the motor, and the motor is connected to the host processor; under the control of the host processor, the motor drives the rotating frame to rotate by driving the motor output shaft to realize the relative turning of the row of skeletons on the rotating frame.

[0018] As one of the preferred embodiments of the present invention, three supporting cross frames, three supporting shaft seats and three shaft sleeves are respectively provided in the rotating support frame; and the six supporting cross frames in the two symmetrically distributed rotating support frames are respectively grouped in pairs and formed integrally; in addition, under the control of the host processor, the motor drives the rotating frame to rotate by driving the motor output shaft to realize the relative flipping of the row of skeletons above the rotating frame, with a flipping angle of 15°-60°.

[0019] As one of the preferred embodiments of the present invention, the rib skeleton includes a left frame, a right frame and a plurality of rib strips; the rib strips are fixed in the left frame and the right frame and are arranged in parallel and spaced apart along the length direction of the left frame and the right frame; each of the rib strips includes a bamboo shrapnel, a sleeve for fixing the bamboo shrapnel and a hardness adjustment device connected to the sleeve; the hardness adjustment device is used for adjusting the hardness of the surface of the bamboo shrapnel.

[0020] As one of the preferred embodiments of the present invention, all the rib strips on the left frame and the right frame together constitute a complete rib strip area; the rib strip area is divided into five areas from top to bottom along its longitudinal direction, namely, head, shoulder and back, waist, buttocks, thigh and calf.

[0021] As one of the preferred embodiments of the present invention, the bamboo shrapnel on each of the rib strips is specifically a double-row bamboo shrapnel with a two-layer or three-layer structure, and the two ends of the double-row bamboo shrapnel with a two-layer or three-layer structure are matched with a pair of sleeves arranged facing each other; the inner ends of the sleeves are respectively provided with two side-by-side hole grooves, and the opening height of the hole grooves corresponds to the thickness of the three-layer bamboo shrapnel, and the bottom ends of the inner walls on both sides of the hole grooves are also formed with a pair of dovetail grooves, and the dovetail grooves are matched with a separately provided pad with a dovetail tenon.

[0022] As one of the preferred embodiments of the present invention, the softness and hardness adjustment device includes a support base, a support rod, a slider and a fixed block; the support base is arranged below the bamboo shrapnel, the upper surface of the support base is provided with a raised scale, a fixed block and a slider are sleeved on the support base, the fixed block is fixedly connected to the support base, and the slider is slidably connected to the support base; four support rods are provided, two by two in a group, and are respectively arranged in parallel on both sides of the support base; one end of the support rod is fixed to the connector and connected to the sleeve above it through the connector, and the other end of the support rod extends in a direction close to the middle of the support base, and sequentially crosses the circular holes on the slider and the fixed block, and is fixedly connected to the fixed block; wherein the slider slides on the support rod and the support base between the connector and the fixed block;

[0023] In addition, the slider is also provided with a bolt mounting hole and a loosening bolt nut matched with the bolt mounting hole, and the loosening bolt nut is used as a loosening and tightening device when the slider is slid left and right.

[0024] As one of the preferred embodiments of the present invention, plug blocks are respectively extended from the two ends of the support base, and the plug blocks cooperate with slots of the same size opened at the inner ends of the left frame or the right frame; the pork ribs are fixedly connected to the left frame or the right frame through the cooperation between the plug blocks and the slots.

[0025] As one of the preferred embodiments of the present invention, the elastic modulus and carbonization degree of the bamboo shrapnel on each of the rib strips can be selected separately; wherein, the elastic modulus of the bamboo shrapnel has four graded options, namely: Grade A ≥ 12500Mpa, 11000Mpa ≤ Grade B ≤ 12500Mpa, 9000Mpa ≤ Grade C ≤ 11000Mpa, Grade D ≤ 9000Mpa; the carbonization degree of the bamboo shrapnel has the following selection range: the carbonization degree is 8%-35%.

[0026] As one of the preferred embodiments of the present invention, when the host processor measures that the local pressure value on the mattress is greater than 4.0 kPa and lasts for more than 1 hour, the host processor issues a bedsore risk warning and reminds the guardian or caregiver through a mobile phone. The caregiver confirms turning over on the host processor and controls the auxiliary turning mechanism in the bed frame to flip the slatted frame.

[0027] The advantages of the present invention compared to the prior art are:

[0028] (1) The present invention overcomes the defects of existing nursing beds that they cannot effectively predict bedsore risks and provide timely risk warnings; when a user lies on the mattress, the mattress is compressed and deformed, and the pressure sensor matrix synchronously obtains an output electrical signal, which is transmitted to the host processor by the information collector, and the host processor analyzes the depression matrix of the human-bed interface; when there is excessive local pressure (exceeding 4.0 kPa) in the record, and the pressure time exceeds 1 hour, a bedsore risk warning is issued;

[0029] (2) The present invention overcomes the defects of the existing nursing bed that the hardness of various parts of the mattress cannot be automatically adjusted, and long-term static pressure is prone to bedsores. The present invention adopts a latex independent cylinder with air bags or an independent air bag design, and takes the pressure monitoring results of the human-bed interface as a scientific theoretical basis to evenly distribute and dynamically adjust the pressure of various parts of the human-bed interface, shorten the static force application time, effectively achieve pressure relief, and reduce the number of times the user turns over. Among them, the design of the latex independent cylinder with air bags can improve the support performance of the mattress; when the local pressure is not large, the air bag latex independent cylinder provides support; when the local pressure is too large, the air bag latex independent cylinder is compressed, the height is reduced, and the independent cylinder and the small air bag provide support simultaneously; the design of the independent air bag can achieve automatic adjustment of the air bag;

[0030] (3) The present invention overcomes the defects of existing nursing beds that cannot assist turning over and are difficult to turn over. The present invention is controlled by a pressure sensor. When the local pressure is too large and the action time is long, the guardian or nursing staff can be reminded in real time. After the turning over operation is confirmed, the bed can assist turning over to avoid continuous pressure on local muscles and soft tissues, affecting blood circulation, and effectively avoiding the occurrence of bedsores.

[0031] (4) The present invention overcomes the defect that the existing nursing beds cannot meet the support needs of people of different body shapes; the present invention can achieve the above needs through any of the following structures: ① The present invention can dynamically adjust the pressure of various parts of the person-bed interface by releasing the pressure of the air bag core layer in the mattress, shorten the static force application time, and effectively meet the support needs of people of different body shapes; ② The present invention can adjust the hardness of the bamboo shrapnel rib frame in various parts through various hardness adjustment devices on the rib frame to increase the fit of the person-bed interface and meet the different support needs of different parts of people of different body shapes; when the slider moves toward the center of the support base, the support rod is easier to bend downward, and the hardness of the bamboo shrapnel is smaller; when the slider moves toward the sides of the support base, the support rod gradually becomes horizontal, and the hardness of the bamboo shrapnel is greater;

[0032] Among them, when the above two structures are used at the same time, the present invention can achieve different supports for people of different body shapes through the hardness adjustment device of the slat frame on the one hand, and realize its pressure change through the airbag on the other hand, so as to achieve massage on the one hand and change the pressure on the other hand, and realize dynamic pressure relief;

[0033] (5) In addition to the above-mentioned "hardness adjustment device", the present invention can also use bamboo shrapnel grading to adjust the elastic modulus, carbonization degree and number of layers (two or three layers) of the bamboo shrapnel to adjust the hardness of the slat frame. The smaller the elastic modulus, the higher the carbonization degree and the more layers, the greater the hardness.

[0034] (6) The present invention can realize customized design and adjustment of modules; the functional modules involved in the present invention can be disassembled and adjusted. Users can realize customized design of the nursing bed according to their own needs based on the above multi-dimensional humanized adjustment methods of softness and hardness, meet the support requirements of various parts of the body, protect the health of the spine, and realize pressure relief of the nursing bed;

[0035] (7) The present invention can reduce the pressure of caregivers and children while achieving scientific and reasonable pressure relief. For caregivers, intelligent care such as scientific pressure monitoring, intelligent bedsore risk warning, intelligent pressure relief and assisted turning can improve the work efficiency of caregivers and even achieve simultaneous care by multiple people, saving a lot of manpower and material resources, and solving the problem of insufficient caregivers to a certain extent. For children, bedsore risk assessment reports are transmitted to them in real time to help them understand the health status of the elderly in a timely manner and reduce economic and mental pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic diagram of the overall structure of the nursing bed with risk monitoring, pressure relief and assisting turning functions in Example 1;

[0037] Figure 2 This is an overall disassembled diagram of the nursing bed with risk monitoring, pressure relief and assisting turning functions in Example 1;

[0038] Figure 3 This is a disassembled diagram of the overall structure of the sparerib strips (with two layers of bamboo shrapnel) in Example 1;

[0039] Figure 4 This is a disassembled diagram of the overall structure of the sparerib strips (with three layers of bamboo shrapnel) in Example 1;

[0040] Figure 5 A is a schematic diagram of the process of adjusting the hardness of the sparerib strips (with two layers of bamboo shrapnel) by the hardness adjustment device in Example 1;

[0041] Figure 6 Schematic diagram B of the process of adjusting the hardness of the sparerib strips (with two layers of bamboo shrapnel) by the hardness adjustment device in Example 1;

[0042] Figure 7 Schematic diagram A of the process of adjusting the hardness of the sparerib strips (with three layers of bamboo shrapnel) by the hardness adjustment device in Example 1;

[0043] Figure 8 Schematic diagram B of the process of adjusting the hardness of the sparerib strips (with three layers of bamboo shrapnel) by the hardness adjustment device in Example 1;

[0044] Fig. 9 is a schematic diagram of the split structure of the slider in Example 1;

[0045] Fig.10 It is a schematic diagram of the overall structure of the rack frame in Example 1;

[0046] Fig.11 It is a schematic diagram of the disassembled structure of the rack frame in Example 1;

[0047] Fig.12 is a schematic diagram of the overall structure of the mattress in Example 1;

[0048] Fig.13 is a front cutaway view of a mattress with an independent airbag in Example 1;

[0049] Fig.14 It is a front view cutaway diagram of the mattress with an airbag latex independent tube in the first embodiment;

[0050] Fig.15 It is a side view cutaway view of the mattress with an airbag latex independent tube in Example 1;

[0051] Fig.16 is a schematic diagram of the overall structure of the independent airbag in Example 1;

[0052] Fig.17 It is a schematic diagram of assembling the airbag latex independent tube in Example 1;

[0053] Fig.18 It is a schematic diagram of the overall structure of the airbag latex independent tube in Example 1;

[0054] Fig.19 is a schematic diagram of the overall structure of the first sponge frame in Example 1;

[0055] Fig. 20 is a schematic diagram of the assembly process of the first sponge frame and the independent airbag in Example 1;

[0056] Fig.21 It is a schematic diagram of the assembly process of the second sponge frame and the airbag latex independent tube in Example 1;

[0057] Fig. 22 is a horizontal distribution diagram of the pressure sensors on the mattress in Example 1;

[0058] Fig.23 is a schematic diagram of the disassembled structure of the rotating support frame in Example 1;

[0059] Fig.24 It is a schematic diagram of the assembly of the rack frame and the bottom rotating support frame in Example 1;

[0060] Fig.25 is a schematic diagram of the state change of the nursing bed before and after folding in Example 1;

[0061] Fig.26 Schematic diagram of pressure distribution at the human-bed interface when a human body lies on the nursing bed in Example 1.

[0062] In the figure: 1 is a bed frame, 11 is an auxiliary turning mechanism, 110 is a rotating support frame, 111 is a rotating frame, 112 is a motor, 113 is a motor output shaft, 114 is a support shaft seat, 115 is a supporting cross frame, 116 is a collar, 12 is an angle code, 2 is a bed screen, 21 is a soft bag, 3 is a guardrail, 4 is a rib frame, 41 is a left frame, 42 is a right frame, 43 is a rib strip, 44 is a bamboo shrapnel, 45 is a sleeve, 451 is a hole groove, 452 is a dovetail groove, 453 is a pad with a dovetail tenon, 46 is a hardness adjustment device, 461 is a support base, 4611 is a raised scale, 4612 is an insert, 462 is a support rod, 463 is a slider, 4631 is a bolt mounting hole, 4632 is a loose bolt and nut, 464 is a fixing block, 465 is a connector, 5 is a mattress, 51 is an upper mattress, 511 is an upper fabric composite layer, 512 is an upper cushioning layer, 52 is a lower mattress, 521 is a lower fabric composite layer, 522 is an airbag core layer, 5221 is a first sponge frame, 5222 is an independent airbag, 5223 is an air suction and discharge device, 5224 is a second sponge frame, 5225 is an airbag latex independent cylinder, 5226 is a small airbag, 523 is a lower cushioning layer, 6 is a pressure sensor, 7 is an information collector, 8 is a host processor, and 9 is a mobile phone. DETAILED DESCRIPTION

[0063] The following is a detailed description of an embodiment of the present invention. This embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation method and a specific operation process are given, but the protection scope of the present invention is not limited to the following embodiment.

[0064] Example 1

[0065] like Figure 1-26 As shown, a nursing bed with risk monitoring, pressure relief and turning assistance functions of this embodiment, taking a single bed as an example, has a length of 2000 mm and a width of 1500 mm, including a bed frame 1, a bed screen 2, a guardrail 3, a slatted frame 4, a mattress 5, a pressure sensor 6, an information collector 7, a host processor 8 and a mobile phone 9.

[0066] See also Figure 1 and Figure 2The bed screen 2 is specifically arranged at the head of the bed frame 1. The left and right sides of the bed frame 1 are upwardly installed with guardrails 3. A slat frame 4 is installed on the bed frame 1 between the two guardrails 3 through an angle code 12, and a mattress 5 is placed on the slat frame 4. Among them, the guardrails 3 are located on both sides of the bed and can be lifted or lowered freely. The upper part thereof is 300mm high from the bed surface, and the side thereof near the bed screen 2 is 600mm wide from the bed screen 2. In addition, both the bed frame 1 and the bed screen 2 are made of solid wood structure, and a soft bag 21 structure composed of knitted fabric wrapped with fiber cotton, sponge, latex and other materials is provided on one side of the bed screen 2 close to the bed surface to increase the comfort of use; at the same time, the height of the bed screen 2 is designed to be 800mm, which is slightly larger than the upper torso height of the elderly, so as to fully provide back support for the elderly when sitting; both the bed frame 1 and the bed screen 2 are designed with rounded corners to effectively prevent the elderly from being injured due to bumps.

[0067] See also Figure 2 , Figure 3 , Fig.10 and Fig.11 The slat frame 4 is divided into left and right partitions and is integrally erected on the bed frame 1; the slat frame 4 specifically includes a left frame 41, a right frame 42 and a plurality of rib strips 43; the overall frame composed of the left frame 41 and the right frame 42 has a width of 1440 mm, a width of 1740 mm and a thickness of 50 mm, wherein the left frame 41 and the right frame 42 are respectively made of metal steel, and the specific width of the left frame 41 is 700 mm, and the specific width of the right frame 42 is 700 mm. The rib strips 43 are fixed in the left frame 41 and the right frame 42 and are arranged in parallel and spaced along the length direction of the left frame 41 and the right frame 42; two adjacent rib strips 43 are spaced 45 mm in the longitudinal direction. Each rib strip 43 includes a bamboo shrapnel 44, a sleeve 45 for fixing the bamboo shrapnel 44 and a hardness adjustment device 46 connected to the sleeve 45, and a single bamboo shrapnel 44 has a length of 790 mm, a width of 55 mm and a thickness of 5 mm. The hardness adjustment device 46 is used to adjust the hardness of the surface of the bamboo shrapnel 44 .

[0068] See also Figure 2 The inner bottom of the bed frame 1 is provided with an auxiliary turning mechanism 11 for relative turning between the left and right partitions on the slat frame 4.

[0069] See also Figure 1 , Figures 13 to 15 as well as Fig. 22, pressure sensors 6 are arranged in a mesh matrix in the mattress 5, and the pressure sensors 6 are connected to the information collector 7, and the information collector 7 is connected to the host processor 8; wherein the information collector 7 collects the information of the pressure sensors to obtain the depression matrix of the human-bed interface, and transmits the depression matrix of the human-bed interface to the host processor 8, and the host processor 8 monitors and analyzes the depression matrix of the human-bed interface in real time. When the host processor 8 measures that the local pressure value on the mattress 5 is greater than 4.0kpa and the duration is greater than 1h, the host processor 8 issues a bedsore risk warning and reminds the guardian or nursing staff through the mobile phone 9. The nursing staff confirms turning over on the host processor 8 or the mobile phone 9, and controls the auxiliary turning mechanism 11 in the bed frame 1 to turn over the slat frame 4.

[0070] An airbag core layer 522 is also arranged in the mattress 5; when the local pressure value on the mattress 5 is greater than the pressure relief start pressure value and the duration is greater than the pressure relief start time value, the airbag core layer 522 in the local mattress 5 releases pressure to complete the pressure relief.

[0071] Further, in this embodiment, please refer to Figures 12 to 15 The mattress 5 includes an upper mattress 51 and a lower mattress 52 located below the upper mattress 51. The upper mattress 51 is a whole, including an upper cushion layer 512 and an upper fabric composite layer 511 wrapped around the outer periphery of the upper cushion layer 512; the upper mattress 51 is a functional layer close to the human body, which can provide functions such as moisture absorption, moisture dissipation, and cushioning. The lower mattress 52 is divided into three parts: left, middle, and right, and is respectively divided longitudinally to include an airbag core layer 522, a lower cushion layer 523 located below the airbag core layer 522, and a lower fabric composite layer 521 wrapped around the outer periphery of the airbag core layer and the lower cushion layer; wherein the pressure sensor 6 is specifically fixedly distributed on the upper cushion layer 512 in the upper fabric composite layer 511, and the pressure sensor 6 transmits the collected human-bed interface depression matrix information to the host processor 8 through the information collector 7, so as to judge the local pressure condition as a scientific basis for reminding guardians and nursing staff to turn over the elderly.

[0072] Specifically, the upper fabric composite layer 511 and the lower fabric composite layer 521 respectively include an inner fabric, an outer fabric and a sponge layer, and the sponge layer is located between the inner fabric and the outer fabric; the upper cushion layer 512 includes a latex layer and a memory foam layer, and the latex layer is arranged on the memory foam layer; the lower cushion layer 523 includes a flower-cut sponge layer.

[0073] Specifically, see Figures 13 to 21The airbag core layer 522 is specifically an independent airbag layer or an independent latex tube layer with airbags. The independent airbag layer includes a first sponge frame 5221, in which a plurality of independent airbags 5222 are arranged vertically, and a suction and discharge device 5223 is provided at the bottom of each independent airbag 5222. The suction and discharge device 5223 is connected to the host processor 8 to realize automatic adjustment of the airbag; when the local pressure value on the mattress 5 is greater than 6.6kpa and the duration is greater than 10min, the host processor 8 controls the independent airbag 5222 in the local mattress 5 to release the pressure to complete automatic pressure relief. The latex independent tube layer with airbags includes a second sponge frame 5224, in which vertically arranged airbag latex independent tubes 5225 are arranged, and each airbag latex independent tube 5225 is wrapped with a small airbag 5226; when the local pressure is not large and the duration is not long, the airbag latex independent tube 5225 is supported; and when the local pressure is too large and the duration is too long, the airbag latex independent tube 5225 is compressed, the height is reduced, and the airbag latex independent tube 5225 and the small airbag 5226 are supported simultaneously (the pressure critical value and time critical value here are specifically related to "latex material", "molding process", etc., and can be made into different critical values). Among them, the first sponge frame 5221 and the second sponge frame 5224 are both foam sponge frames or latex sponge frames.

[0074] Further, in this embodiment, please refer to Fig.23 and Fig.24 , the auxiliary turning mechanism 11 includes two rotating support frames 110 which are symmetrically distributed on the left and right; each rotating support frame 110 includes a rotating frame 111, a motor 112, a motor output shaft 113, a support shaft seat 114 and a support cross frame 115; wherein the support cross frame 115 is arranged on the bottom of the bed frame 1 along the width direction of the bed, and three are arranged at equal intervals along the length direction of the bed, and each support cross frame 115 is fixed with a support shaft seat 114; the motor output shaft 113 is extended along the length direction of the bed, and the shaft body of the motor output shaft 113 is sleeved with three collars 116, one end of the collar 116 is fixedly connected to the motor output shaft 113, and the other end thereof is rotatably matched with the support shaft seat 114; the rotating frame 111 is arranged on one side of the motor output shaft 113, and one side end of the rotating frame 111 is fixedly connected to the corresponding motor output shaft 113 through the collar 116, and the upper end of the rotating frame 111 is fixedly connected to the bottom of the corresponding row frame 4. Among them, the input end of the motor output shaft 113 is connected to the motor 112, and the motor 112 is connected to the host processor 8; under the control of the host processor 8, the motor 112 drives the rotating frame 111 to rotate by driving the motor output shaft 113 to achieve the relative flipping of the upper row of skeletons 4 of the rotating frame 111; the flipping process is as follows Fig.25As shown, the flip angle is 15°-60°, and users can make different designs according to their own conditions. Among them, the six support cross frames 115 in the two symmetrically distributed rotating support frames 110 are respectively formed in pairs and are integrally formed.

[0075] Further, in this embodiment, please refer to Figure 3 and Figure 4 The bamboo shrapnel 44 on each rib strip 43 is specifically a double-row bamboo shrapnel 44 with a two-layer or three-layer structure. The two ends of the double-row bamboo shrapnel 44 with a two-layer or three-layer structure are matched with a pair of sleeves 45 arranged opposite to each other, and the sleeves 45 are made of a metal material with relatively high strength; the inner ends of the sleeves 45 are respectively provided with two side-by-side hole grooves 451, and the opening height of the hole grooves 451 corresponds to the thickness of the three-layer bamboo shrapnel 44, and a pair of dovetail grooves 452 are respectively formed at the bottom ends of the inner walls on both sides of the hole grooves 451, and the dovetail grooves 452 are matched with a separately provided pad 453 with a dovetail tenon. When only two-layer double-row bamboo shrapnel 44 is needed, the pad 453 with dovetail tenon is installed at the bottom of the hole groove 451, and the required two-layer double-row bamboo shrapnel 44 is placed on the pad 453 with dovetail tenon; when three-layer double-row bamboo shrapnel 44 is needed, there is no need for the pad 453 with dovetail tenon, and the three-layer double-row bamboo shrapnel 44 is directly placed in the corresponding hole groove 451 of the sleeve.

[0076] Further, in this embodiment, please refer to Figures 3 to 9The hardness adjustment device 46 includes a support base 461, a support rod 462, a slider 463 and a fixed block 464. The support base 461 is arranged below the bamboo shrapnel 44 and is made of reconstituted bamboo. The upper surface of the support base 461 is provided with a raised scale 4611 as a scale for quantitatively adjusting the hardness of the rib frame 4. Two fixed blocks 464 and two sliders 463 are sleeved on the support base 461. Both the sliders 463 and the fixed blocks 464 are made of high-strength metal materials; wherein the two fixed blocks 464 are fixedly connected to the support base 461, and the two sliders 463 are slidably connected to the support base 461, and the two sliders 463 are arranged on the outer sides of the two fixed blocks 464 respectively. The support rod 462 is an elastic metal round rod, and there are four of them, arranged in groups of two, and arranged in parallel on both sides of the support base 461; one end of the support rod 462 is fixed to the connecting body 465, and connected to the sleeve 45 above it through the connecting body 465, and the other end of the support rod 462 extends in the direction close to the middle of the support base 461, and crosses the circular holes on the slider 463 and the fixed block 464 in turn, and is fixedly connected to the fixed block 464. Among them, the slider 463 slides on the support rod 462 and the support base 461 between the connecting body 465 and the fixed block 464 to change the functional size of the support rod 462, thereby adjusting the hardness of the slat frame 4. In addition, the slider 463 is also provided with a bolt mounting hole 4631 and a loosening bolt nut 4632 matched with the bolt mounting hole 4631, and the loosening bolt nut 4632 is used as a loosening device when the slider 463 slides left and right. Among them, when the slider 463 moves toward the center of the support base 461, the support rod 462 made of elastic metal material is easier to bend downward, and the hardness of the bamboo shrapnel 44 is smaller; when the slider 463 moves toward the sides of the support base 461, the support rod 462 gradually becomes horizontal, and the hardness of the bamboo shrapnel 44 increases; when the slider 463 slides to the desired position, tighten the tension bolt nut 4632, and the slider 463 is stuck in the raised scale 4611 on the support base 461 to fix the position of the slider 463, thereby realizing stable and quantitative adjustment of the hardness of the slat frame 4 to meet the adjustment needs.

[0077] Furthermore, in this embodiment, plug blocks 4612 are respectively extended from the two ends of the support base 461, and the plug blocks 4612 cooperate with the same-sized slots opened at the inner ends of the left frame 41 or the right frame 42; the spare ribs 43 and the left frame 41 or the right frame 42 are fixedly connected by the cooperation between the plug blocks 4612 and the slots.

[0078] In addition, in this embodiment, it should be noted that all the rib strips 43 on the left frame 41 and the right frame 42 of the rib frame 4 together constitute a complete rib strip area, which is divided into five areas of head, shoulder and back, waist, buttocks, thigh and calf along its longitudinal direction from top to bottom; the rib strips in each area can be scientifically and reasonably selected and matched by adjusting the softness and hardness adjustment device 46 of the bamboo shrapnel 44 in different parts and the elastic modulus, carbonization degree classification and number of layers (two or three layers) of the bamboo shrapnel 44 itself at the corresponding position, so as to adaptively meet the support needs of different parts of different people, realize the zoning adjustment of the structure of the nursing bed rib frame 4, ensure that the human spine is in a natural bending state, and realize pressure relief. At the same time, the mattress 5 on different rib strips 43 areas can also be correspondingly divided into five areas of head, shoulder and back, waist, buttocks, thigh and calf; the air bag core layer 522 inside the mattress 5 in each area can also adaptively meet the support needs of different parts of different people, realize the zoning adjustment of the structure of the mattress 5, ensure that the human spine is in a natural bending state, and realize pressure relief.

[0079] The specific description of the elastic modulus and carbonization degree grading technology of the bamboo shrapnel itself is as follows:

[0080] (1) A large number of studies have shown that there are many factors that affect the physical and mechanical properties of bamboo, including bamboo species, density, bamboo age, site conditions, and bamboo microstructure. The physical and mechanical properties of different plants and different parts of the same type of bamboo also vary significantly. Among them, the elastic modulus can be regarded as an indicator of the ease with which a material can produce elastic deformation. The larger its value, the greater the stress required to cause a certain elastic deformation of the material, that is, the greater the stiffness of the material, that is, the smaller the elastic deformation under a certain stress. The larger the elastic modulus value, the greater the material stress, the stronger the rigidity, and the less likely it is to deform. The smaller the elastic modulus value, the smaller the material stress, the weaker the rigidity, and the easier it is to deform.

[0081] The present invention can use a dynamic method to perform nondestructive testing on bamboo shrapnel of different chemical properties. According to the value obtained by the test, the bamboo shrapnel 44 is divided into four different elastic modulus grades, for example, grade A ≥ 12500Mpa, 11000Mpa ≤ grade B ≤ 12500Mpa, 9000Mpa ≤ grade C ≤ 11000Mpa, and grade D ≤ 9000Mpa. The larger the elastic modulus value, the better the elasticity of the bamboo shrapnel 44, and the softer the surface of the rib skeleton 4. The user can select the bamboo shrapnel 44 within the appropriate elastic modulus range according to their own characteristics, and can select according to different partitions.

[0082] (2) Bamboo itself is a material that is easily corroded and contains a large amount of sugar. Under suitable conditions, various fungi multiply rapidly, and bamboo is susceptible to corrosion. The first method to prevent bamboo from corrosion is to use a chemical treatment method similar to that used for wood, and the second is carbonization with high-temperature steam. Among them, carbonization with high-temperature steam has a certain anti-corrosion effect on bamboo, and its main advantages are that it is simple, easy to operate, highly efficient, and pollution-free.

[0083] Studies have shown that after bamboo is carbonized by steam, the sugar inside is oxidized by high temperature, and the carbon content in the molecular chain increases. The density will increase to a certain extent, by about 10%. In addition, the bending modulus and strength of bamboo after steam carbonization are improved to a certain extent compared with uncarbonized bamboo. Therefore, carbonization can enhance the mechanical properties of bamboo. A large amount of data research shows that the bending modulus of bamboo after steam carbonization increases by 8.4% and the strength increases by 10%, which is beneficial to the design and use of structural materials. The bamboo shrapnel 44 involved in the present invention can improve the mechanical properties of bamboo shrapnel by carbonization method, and the carbonization degree selection range is 8%-35%, which can meet the force requirements of different parts.

[0084] The following is an explanation of the principles and application methods of the related functions that can be achieved by the nursing bed of this embodiment:

[0085] 1. Further explanation of the information collection and analysis methods for monitoring, evaluating, regulating and reminding patients to turn over, etc. for bedsore risk:

[0086] ① The subject lies on the experimental bed, and the pressure distribution diagram of the person-bed interface is as follows Fig.26 As shown;

[0087] ② Under the weight of the person, the fabric composite layer and the airbag core layer 522 are compressed and deformed, and the pressure sensor 6 matrix synchronously obtains output electrical signals;

[0088] ③ The information collector 7 collects the change in the output electrical signal of each synchronous sensor in the pressure sensor 6 matrix to obtain the depression matrix of the human-bed interface;

[0089] ④ The host processor 8 analyzes the depression matrix of the human-bed interface, and determines the hardness of the slat frame 4 adapted to the supporting performance of each part by judging the pressure conditions of each part;

[0090] ⑤ The host processor 8 monitors and analyzes the depression matrix of the human-bed interface after adjusting the slat frame 4 in real time. When the local pressure of the user is too large (more than 6.6 kPa) and the time is long (more than 10 minutes), the airbag at that part releases the pressure, while other parts with insufficient support increase the pressure, and continuously adjusts according to the real-time pressure changes. On the one hand, it plays a massage role, and on the other hand, it shortens the static force application time of each part, increases the dynamic force of the muscles, and can promote blood circulation, thereby achieving pressure relief;

[0091] ⑥ The host processor 8 analyzes the depression matrix of the human-bed interface. When there is excessive local pressure (more than 4.0 kPa) in the record and the pressure time exceeds 1 hour, a bedsore risk warning is issued, and the guardian or nursing staff is reminded through the mobile phone 9. The nursing staff confirms it on the host processor 8 and assists in turning over.

[0092] 2. Further explanation of the method of adjusting the hardness of the slat frame 4 to meet the different support needs of people of different body types:

[0093] ① Divide the rib frame 4 longitudinally into five areas: head, shoulder and back, waist, buttocks, thighs, and calves;

[0094] ② After "determining the hardness of the slat frame 4 that is suitable for the supporting performance of each area", quantitatively adjust the slat frame 4 of each area; on the one hand, it can be adjusted by replacing the slat frame 4 module, that is, by grading the density, elastic modulus, and carbonization degree of the bamboo shrapnel 44, and combining the control of the number of layers of the bamboo shrapnel 44 (two or three layers), the hardness of the rib strip 43 is adjusted. The smaller the density of the bamboo shrapnel 44, the larger the elastic modulus, the lower the carbonization degree, and the fewer the layers, the smaller the hardness of the rib strip 43; on the other hand, it is also possible to directly adjust the position of the slider 463 on the slat frame 4. The further the slider 463 moves to the sides, the greater the hardness of the bamboo shrapnel 44.

[0095] 3. Further explanation of the method of achieving dynamic pressure relief using the airbag latex independent tube 5225 or the independent airbag 5222 design:

[0096] ① The design of the airbag latex independent cylinder 5225 can improve the support performance of the mattress 5. When the local pressure is not large, the airbag latex independent cylinder 5225 provides independent support. When the local pressure is too large, the airbag latex independent cylinder 5225 is compressed and the height is reduced. The airbag latex independent cylinder 5225 and the small airbag 5226 inside it provide support simultaneously.

[0097] ② Based on the scientific theory of the pressure monitoring results at the human-bed interface, when the local pressure of the user is too high (over 6.6 kPa) and lasts for a long time (over 10 minutes), the system automatically controls the switch of the air suction and deflation device 5223 at the bottom of the independent airbag 5222 at that part to release the pressure, and pressurizes other parts with insufficient support, and repeats this step continuously according to the real-time pressure changes, thereby achieving a continuous dynamic pressurization and pressure relief process. On the one hand, it has a massage effect, and on the other hand, it shortens the static force application time of each part, increases the dynamic force of the muscles, promotes blood circulation, and thus achieves pressure relief.

[0098] 4. Further explanation of the method of assisting turning over function:

[0099] The assisted turning design can be realized by the rotating support frame 110 of the auxiliary turning mechanism 11; based on the scientific theoretical basis of the pressure monitoring results of the human-bed interface, when the local pressure is too large (exceeding 4.0kpa) and the pressure time exceeds 1h, a bedsore risk warning is issued to remind the guardian or nursing staff. The nursing staff confirms turning over on the mobile phone 9 or the host processor 8, and the nursing bed automatically flips over to realize turning over; the assisted turning design can effectively avoid the occurrence of bedsores, save a lot of manpower and material resources, improve the work efficiency of nursing staff, and solve the problem of insufficient nursing staff to a certain extent.

[0100] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A nursing bed with risk monitoring, pressure relief and turning assistance functions, characterized in that: The invention comprises a bed frame, a slat frame and a mattress; the slat frame is divided into left and right partitions and is integrally mounted on the bed frame; an auxiliary turning mechanism is provided at the inner bottom of the bed frame for relative turning between the left and right partitions on the slat frame; the mattress is placed on the slat frame, a pressure sensor is arranged in the mattress, the pressure sensor is connected to an information collector, and the information collector is connected to a host processor; The information collector collects information from the pressure sensor to obtain a depression matrix of the human-bed interface, and transmits the depression matrix of the human-bed interface to the host processor, which monitors and analyzes the depression matrix of the human-bed interface in real time; when the host processor measures that the local pressure value on the mattress is greater than the bedsore risk warning pressure value, and the duration is greater than the bedsore risk warning time, the host processor issues a bedsore risk warning, and after receiving a turning over instruction, controls the auxiliary turning over mechanism to turn over the slat frame; In addition, an air bag core layer is arranged in the mattress; when the local pressure value on the mattress is greater than the pressure relief start pressure value and the duration is greater than the pressure relief start time value, the air bag core layer in the mattress releases pressure to complete the pressure relief.

2. The nursing bed with risk monitoring, pressure relief and turning assistance functions according to claim 1 is characterized in that: The mattress includes an upper mattress and a lower mattress located below the upper mattress; the upper mattress is an integral whole, including an upper cushioning layer and an upper fabric composite layer covering the outer periphery of the upper cushioning layer; the lower mattress is divided into three parts: left, middle and right, and is respectively divided longitudinally to include an airbag core layer, a lower cushioning layer located below the airbag core layer, and a lower fabric composite layer covering the outer periphery of the combination of the airbag core layer and the lower cushioning layer; wherein the pressure sensor is fixedly distributed within the upper fabric composite layer.

3. The nursing bed with risk monitoring, pressure relief and turning assistance functions according to claim 2 is characterized in that: The upper fabric composite layer and the lower fabric composite layer respectively include an inner fabric, an outer fabric and a sponge layer, wherein the sponge layer is located between the inner fabric and the outer fabric; the upper cushion layer includes a latex layer and a memory foam layer, wherein the latex layer is arranged on the memory foam layer; and the lower cushion layer includes a flower-cut sponge layer.

4. The nursing bed with risk monitoring, pressure relief and turning assistance functions according to claim 2 is characterized in that: The airbag core layer is specifically an independent airbag layer or a latex independent tube layer with airbags; the independent airbag layer includes a first sponge frame, in which a plurality of independent airbags are arranged vertically, and a suction and deflation device is provided at the bottom of each independent airbag, and the suction and deflation device is connected to the host processor; the latex independent tube layer with airbags includes a second sponge frame, in which a plurality of independent airbags of latex are arranged vertically, and each independent airbag latex tube is wrapped with a small airbag inside.

5. The nursing bed with risk monitoring, pressure relief and turning assistance functions according to claim 1 is characterized in that: The auxiliary turning mechanism includes two rotating support frames distributed in a left-right symmetrical shape; each of the rotating support frames includes a rotating frame, a motor, a motor output shaft, a support shaft seat and a supporting cross frame; wherein the supporting cross frame is arranged on the inner bottom of the bed frame along the width direction of the bed, and a supporting shaft seat is fixed on the supporting cross frame; the motor output shaft is extended along the length direction of the bed, and the shaft body of the motor output shaft is sleeved with a ring; one end of the ring is fixedly connected to the motor output shaft, and the other end thereof is rotatably matched with the supporting shaft seat; the rotating frame is arranged on one side of the motor output shaft, one side end of the rotating frame is fixedly connected to the motor output shaft through the ring, and the upper end of the rotating frame is fixedly connected to the bottom of the corresponding row of skeletons; wherein the input end of the motor output shaft is connected to the motor, and the motor is connected to the host processor; under the control of the host processor, the motor drives the rotating frame to rotate by driving the motor output shaft to realize the relative turning of the row of skeletons on the rotating frame.

6. The nursing bed with risk monitoring, pressure relief and turning assistance functions according to claim 1, characterized in that: The rib frame includes a left frame, a right frame and a plurality of rib strips; the rib strips are fixed in the left frame and the right frame and are arranged in parallel and spaced apart along the length direction of the left frame and the right frame; each of the rib strips includes a bamboo shrapnel, a sleeve for fixing the bamboo shrapnel and a hardness adjustment device connected to the sleeve; the hardness adjustment device is used for adjusting the hardness of the surface of the bamboo shrapnel.

7. The nursing bed with risk monitoring, pressure relief and turning assistance functions according to claim 6, characterized in that: The bamboo shrapnel on each of the rib strips is specifically a double-row bamboo shrapnel with a two-layer or three-layer structure, and the two ends of the double-row bamboo shrapnel with a two-layer or three-layer structure are matched with a pair of sleeves arranged facing each other; the inner ends of the sleeves are respectively provided with two side-by-side hole grooves, and the opening height of the hole grooves corresponds to the thickness of the three-layer bamboo shrapnel, and the bottom ends of the inner walls on both sides of the hole grooves are also formed with a pair of dovetail grooves, and the dovetail grooves are matched with a separately provided pad with a dovetail tenon.

8. The nursing bed with risk monitoring, pressure relief and turning assistance functions according to claim 6, characterized in that: The softness and hardness adjustment device comprises a support base, a support rod, a slider and a fixed block; the support base is arranged below the bamboo shrapnel, the upper surface of the support base is provided with a raised scale, a fixed block and a slider are sleeved on the support base, the fixed block is fixedly connected to the support base, and the slider is slidably connected to the support base; four support rods are provided, two by two in a group, and are respectively arranged in parallel on both sides of the support base; one end of the support rod is fixed to the connecting body and connected to the sleeve above it through the connecting body, and the other end of the support rod extends in a direction close to the middle of the support base, and sequentially crosses the circular holes on the slider and the fixed block, and is fixedly connected to the fixed block; wherein, the slider slides on the support rod and the support base between the connecting body and the fixed block; In addition, the slider is also provided with a bolt mounting hole and a loosening bolt nut matched with the bolt mounting hole, and the loosening bolt nut is used as a loosening and tightening device when the slider is slid left and right.

9. The nursing bed with risk monitoring, pressure relief and turning assistance functions according to claim 8, characterized in that: Insert blocks are respectively extended from the two ends of the support base, and the insert blocks cooperate with slots of the same size opened at the inner end of the left frame or the right frame; the rib strips are fixedly connected to the left frame or the right frame through the cooperation of the insert blocks and the slots.

10. The nursing bed with risk monitoring, pressure relief and turning assistance functions according to any one of claims 1 to 9, characterized in that: When the host processor measures that the local pressure value on the mattress is greater than 4.0 kPa and lasts for more than 1 hour, the host processor issues a bedsore risk warning and reminds the guardian or caregiver through a mobile phone. The caregiver confirms turning over on the host processor and controls the auxiliary turning mechanism in the bed frame to flip the slatted frame.

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