Novel bed and method for solving problem of pressure sores at one time

Abstract

The invention discloses a novel bed and method for solving the problem of pressure sores at a time, the novel bed comprises a bed body and a processor, the bed body comprises at least 30 lifting tables, one or more lifting tables at different positions can be descended, a space is formed between the body and the bed body, and the problem of pressure sores is fundamentally solved. In addition, the independent air cushions can be inflated or deflated at the same time, and after inflation, a pressure sensor, a temperature sensor and a height sensor on the top of each air cushion detect the pressure borne by the air cushion, the temperature of the top of the air cushion and the height between the top of the air cushion and the bottom of the air cushion correspondingly. The processor converts the pressure signal, the temperature signal and the height signal into voltage values and calculates a total voltage value; when the total voltage value corresponding to one or more lifting tables exceeds a preset threshold value range, the lifting tables are controlled to descend, the body of the patient at the position is suspended, a space distance is generated between the body at the position and the bed body, and therefore pressure sores are further prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and more specifically, to a new bed and method for solving the problem of pressure sores in one go. Background Art

[0002] Pressure sores, also known as bedsores and pressure ulcers, are caused by long-term pressure on local tissues of the body, resulting in blood circulation disorders, continuous ischemia, hypoxia, and malnutrition of the tissues, which in turn cause localized tissue damage and necrosis. This phenomenon usually occurs in patients who are bedridden for a long time, have poor nutritional status, or are under long-term local pressure, such as the elderly, paralyzed patients, and patients with lower limb fractures. It mainly occurs in the sacrum, heels, scapula and bone protuberances, parts that come into contact with medical devices or other devices, or other parts. Pressure sores are a disease that requires long-term care and treatment. For patients, preventing the occurrence of pressure sores is more important than treating them. Therefore, active preventive measures should be taken to avoid the occurrence of pressure sores. For example, long-term bedridden patients should turn over or change their positions every two hours to reduce blood circulation disorders caused by long-term pressure on local tissues. Another example is to reduce friction, reduce mechanical damage caused by direct contact between the skin and the bed surface, protect vulnerable parts, and ensure gentle movements when moving to avoid causing additional pressure.

[0003] Prior art 1 (application number 201922228085X, application date 2019.12.11) discloses a pressure sore care pad, such as Figure 1 As shown, the bottom of the rubber seat (1) is connected to a bracket (2), the bottom of the bracket (2) is connected to a bottom plate (3), a plurality of lifting screw nut mechanisms (4) are installed on the bracket (2), the other end of the lifting screw nut mechanism (4) is connected to a rotating connector (5), the other end of the rotating connector (5) is connected to the rubber seat (1), and a depression is formed at the corresponding position of the nursing pad for the position with pressure sores, so as to prevent the back or legs of the patient with pressure sores from directly fitting against the bed, and to avoid excessive compression of the pressure sores. If the position of the depression is too small, and for a locally large pressure sore, or when there are multiple pressure sores, the lifting rods need to be lowered at multiple locations, so that the nursing pad itself will have multiple depressions, and the patient will feel uncomfortable even if lying on the bed, which is not conducive to treatment.

[0004] Prior art 2 (application number 2020206653163, application date 2020.04.27) discloses a pressure sore care device, including a care box and a support seat, both sides of the care box are connected to the support seat through slide rails, the slide rails are engaged in the slide grooves inside the care box, a storage drawer is arranged at the front end of the care box, a first groove is arranged in the middle of the bottom of the care box, a bottom pressure plate is connected in the first groove through a first axis, a non-slip pad is fixed on the bottom pressure plate, and a bottom pressure plate cotton pad is fixed on the other side of the bottom pressure plate by bonding the Velcro fur surface and the Velcro thorn surface, and non-slip pads are also fixed on both sides of the bottom of the care box, a second groove is arranged in the middle of the top of the support seat, and a side pressure plate and a support plate are connected in the second groove through a second axis respectively, the side pressure plate is located above the support plate, and a plurality of limiting protrusions are evenly arranged on the bottom of the side pressure plate, and a side pressure plate cotton pad is fixed on the top of the side pressure plate by bonding the Velcro fur surface and the Velcro thorn surface. The pressure sore care device requires that the bottom pressure plate be rotated 180° before placing the care box on the bed, so that the patient's side presses the bottom pressure plate. This can only solve the pressure on the bottom of the patient's side and solve the pressure sores caused by side lying. Pressure sores in other positions cannot be cared for.

[0005] Prior art 3 (application number 2020107190479, application date 2020.7.23) discloses an air mattress with an alternating air pressure device and acupoint massage function. An inflatable cushion is arranged on the bed body. The inflatable cushion has multiple air chambers. The multiple air chambers work alternately to prevent pressure sores. In this invention, the bed board cannot be lowered, and the air chambers work alternately. It is impossible to determine which air chamber needs to be deflated. Each lifting platform of the present invention can be lowered, and the lifting platform is lowered according to the pressure signal, temperature signal and height signal after the pressure sensor, temperature sensor and height sensor respectively detect the pressure on the air cushion, the temperature at the top of the air cushion and the height between the top and the bottom of the air cushion, which is more purposeful.

[0006] Prior art 4 (application number 2018101147482, application date 2018.02.06) discloses an air mattress for preventing bedsores, which has an air mattress body, and the air mattress surface layer and the air mattress middle layer are composed of multiple independent air bag belts arranged side by side, which can adjust the inflation degree of each position of the air mattress according to the pressure of various parts of the human body. However, the bottom of the air mattress of this invention does not have a supporting structure that can be lowered, and the air bag can only be inflated and deflated according to the pressure, which is not accurate enough. The lifting platform of the present invention can descend, and the descent of the lifting platform is based on the pressure signal, temperature signal and height signal after the pressure sensor, temperature sensor and height sensor respectively detect the pressure on the air mattress, the temperature of the top of the air mattress and the height between the top and the bottom of the air mattress. It is more accurate and reasonable after the pressure signal, temperature signal and height signal are integrated.

[0007] Prior art 5 (application number 2024207542950, ​​application date 2024.04.12) discloses a nursing anti-pressure sore massage device, which achieves massage of the patient by setting a massage bump to cooperate with a silicone flexible pad. The technical problem to be solved by this application is different from that of the present application, and the purpose is also different. The purpose of this application is to achieve massage, and the present invention is to separate the long-term pressed position from the airbag. Of course, the structure is different from that of the present application. This structure has no lifting platform and no airbag, and cannot separate the flexible pad from the patient's body, and cannot lift and lower the flexible pad according to the pressure signal, temperature signal and height signal.

[0008] Prior art 6 (application number 2024201188515, application date 2024.01.18) discloses a nursing device for preventing pressure sores in critically ill patients, including a nursing bed and a soft mattress. When the patient is on the soft mattress, the doctor runs the motor to make the first gear drive the second gear to move on the rack surface, and the convex plate supports the convex shape of the soft mattress and slides under the patient. By continuously changing the support point under the patient, the patient is prevented from developing acne. This application is different from the technical problem to be solved by the present application, and the purpose is also different. The purpose of this application is to achieve massage by lifting the convex shape of the soft mattress by the convex plate, and the present invention is to separate the long-term pressed position from the airbag. Of course, the structure is different from the present application. This structure has no lifting platform and no airbag, and cannot separate the soft mattress from the patient's body, and cannot lift and lower the soft mattress according to the pressure signal, temperature signal and height signal.

[0009] Therefore, there is an urgent need to provide a new bed and method that can solve the problem of pressure sores at one time. Summary of the invention

[0010] In view of this, the present invention provides a new bed and method for solving the problem of pressure sores in one go.

[0011] The new disposable bed for solving the problem of bedsores provided by the present invention comprises: a bed body and a processor electrically connected to the bed body, wherein:

[0012] The bed body includes a plate-type base and at least 30 lifting platforms arranged in an array above the base, wherein:

[0013] Each lifting platform includes a bottom hydraulic cylinder, a support body and an air cushion, wherein:

[0014] The bottom hydraulic cylinder is fixedly connected to the base, and the bottom hydraulic cylinder includes a mounting seat, an outer sleeve, a middle sleeve and an inner sleeve located on the base, the mounting seat is fixedly connected to the base, the inner sleeve is sleeved in the middle sleeve, the middle sleeve is sleeved in the outer sleeve, the outer sleeve, the middle sleeve and the inner sleeve are all cylindrical, and the mounting seat is a cubic structure;

[0015] The bottom of the support body is fixedly connected to the inner sleeve of the bottom hydraulic cylinder, and the support body is a cubic structure;

[0016] The bottom of the air cushion is connected to the top of the support body, and the air cushion is detachably connected to the top of the support body through Velcro; the top of the air cushion is fitted with cotton cloth, and the count of the cotton cloth is at least 80; each air cushion is inflated and deflated separately under the control of the processor; a pressure sensor, a temperature sensor and a height sensor are provided on the top of each air cushion, and the pressure sensor, the temperature sensor and the height sensor are electrically connected to the processor, the pressure sensor detects the pressure of the patient on each air cushion, the temperature sensor detects the temperature of the top of the air cushion, and the height sensor measures the height from the top of the air cushion to the bottom of the air cushion; the processor receives the voltage signals measured by the pressure sensor, the temperature sensor and the height sensor, and calculates according to the following method:

[0017] y=a×U+b×V+c×W,

[0018] Wherein, y is the total voltage value calculated according to the pressure sensor, the temperature sensor and the height sensor, a is the weight of pressure, U is the voltage value measured by the pressure sensor, b is the weight of temperature, V is the voltage value measured by the temperature sensor, c is the weight of height, and W is the voltage value measured by the height sensor; the processor calculates that the total voltage value y corresponding to at least one of the lifting platforms exceeds the preset threshold, and the processor

[0019] Control the lifting platform to descend.

[0020] Optionally, a>b>c.

[0021] Optionally, the pressure sensor is a piezoresistive pressure sensor, a ceramic pressure sensor, or a piezoelectric pressure sensor.

[0022] Optionally, the temperature sensor is an infrared temperature sensor or a thermistor temperature sensor.

[0023] Optionally, the altitude sensor is a barometric altitude sensor.

[0024] Optionally, the side surface of the support body has a groove that is concave toward the center, a support plate is arranged in the groove, and the support plate is rotatably connected to the upper side wall of the groove through a connector;

[0025] The support body is a hollow cubic structure. Inside the support body, a trapezoidal platform is fixed on the bottom plate of the support body. The area of ​​the upper top surface of the trapezoidal platform is smaller than the area of ​​the lower bottom surface of the trapezoidal platform. The side surface of the trapezoidal platform is inclined. The angles between the side surface of the trapezoidal platform and the lower bottom surface of the trapezoidal platform are both less than 90°, and the angles between the side surface of the trapezoidal platform and the upper top surface of the trapezoidal platform are both greater than 90°. A spherical groove is provided on the side surface of the trapezoidal platform. A spherical seat is clamped in the spherical groove. The spherical seat rotates in the spherical groove. A side hydraulic cylinder is fixedly connected to the spherical seat. The other end of the side hydraulic cylinder passes through the groove on the side surface of the support body and is fixedly connected to the side support plate. When the side hydraulic cylinder is working, it drives the side support plate to open.

[0026] Optionally, the connecting body includes an upper connecting member, a lower connecting member and a rotating shaft, the upper connecting member and the lower connecting member are rotatably connected via the rotating shaft, the upper connecting member is fixedly connected to the upper side wall of the groove of the support body, and the lower connecting member is fixedly connected to the top of the inner side of the side support plate.

[0027] Optionally, the fixed connection is a bolt connection.

[0028] Optionally, a top through hole is provided on the top of the support body, and a side through hole is provided on the side of the support body.

[0029] The present invention also provides a one-time method for solving the problem of pressure sores, which is applied to the above-mentioned new bed and comprises the following steps:

[0030] Under the control of the processor, all the bottom hydraulic cylinders work, and the middle sleeve and the inner sleeve extend from the outer sleeve, driving the support body to rise to a preset position;

[0031] Inflating each of the air cushions;

[0032] After the patient lies on the bed, the pressure sensor, the temperature sensor and the height sensor on the top of each air cushion respectively detect the pressure on the air cushion, the temperature of the top of the air cushion, and the height between the top of the air cushion and the bottom of the air cushion, and send the pressure signal, temperature signal and height signal of different lifting platforms to the processor respectively;

[0033] The processor converts the pressure signal, the temperature signal and the height signal into voltage values ​​respectively, and calculates the total voltage value according to the formula y=a×U+b×V+c×W;

[0034] When the total voltage value corresponding to one or several of the lifting platforms exceeds a preset threshold range, the bottom hydraulic cylinder corresponding to the one or several lifting platforms is controlled to descend, and the middle sleeve and the inner sleeve are retracted back into the outer sleeve, driving the support body to descend. After the corresponding lifting platform descends, the patient's body at that position is suspended in the air, so that a spatial distance is created between the body at that position and the bed body, thereby preventing the occurrence of pressure sores.

[0035] Optionally, when the total voltage values ​​corresponding to two adjacent lifting platforms exceed a preset threshold range, the two adjacent lifting platforms are controlled to descend, and the side support plates of the lifting platforms adjacent to the two lifting platforms are opened to form a slope to provide support for the body.

[0036] Optionally, the height of the lifting platform located at the edge of the bed is not less than the height of the lifting platform in the middle area.

[0037] Compared with the prior art, the novel bed and method for solving the problem of pressure sores provided by the present invention at least achieve the following beneficial effects:

[0038] The new bed of the present invention that solves the problem of pressure sores in one go can lower one or more lifting platforms at different positions to form a space between the body and the bed body, thereby preventing pressure sores from occurring at corresponding positions and fundamentally solving the problem of pressure sores.

[0039] The present invention can inflate or deflate each independent air cushion at the same time. After inflation, the pressure sensor, temperature sensor and height sensor on the top of each air cushion respectively detect the pressure of the air cushion, the temperature of the top of the air cushion and the height between the top and the bottom of the air cushion, and send the pressure signal, temperature signal and height signal of different lifting platforms to the processor respectively; the processor converts the pressure signal, temperature signal and height signal into voltage values ​​respectively, and calculates the total voltage value according to the formula y=a×U+b×V+c×W; when the total voltage value corresponding to one or several lifting platforms exceeds the preset threshold range, the bottom hydraulic cylinder corresponding to the one or several lifting platforms is controlled to descend, and the middle sleeve and the inner sleeve are retracted back into the outer sleeve, driving the support body to descend. After the corresponding lifting platform descends, the patient's body at this position is suspended in the air, so that a spatial distance is generated between the body at this position and the bed body, thereby further preventing the occurrence of pressure sores.

[0040] Of course, any product implementing the present invention does not necessarily need to achieve all of the technical effects described above at the same time.

[0041] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0043] Figure 1 It is a structural schematic diagram of a pressure sore care pad provided by the prior art;

[0044] Figure 2 This is a schematic diagram of a new bed structure provided by the present invention for solving the problem of pressure sores in one go;

[0045] Figure 3 It is a partial schematic diagram of the novel disposable bed for solving the problem of pressure sores of the present invention during use;

[0046] Figure 4 It is a structural schematic diagram of a support provided by the present invention;

[0047] Figure 5 It is a structural schematic diagram of another support body provided by the present invention;

[0048] Figure 6 It is a schematic diagram of a combination of a support provided by the present invention;

[0049] Figure 7 It is a schematic diagram of the connection between the side support plate and the support body in the present invention;

[0050] Figure 8 It is a structural schematic diagram of another support body provided by the present invention;

[0051] Fig. 9 The present invention provides a one-time method for solving the problem of pressure sores;

[0052] Fig.10 This is another one-time method for solving the problem of pressure sores provided by the present invention;

[0053] Among them, 10-support body, 101-side support plate, 101a-right side support plate, 101b-left side support plate, 102-trapezoidal platform, 103-side hydraulic cylinder, 104-spherical seat, 20-air cushion, 201-pressure sensor, 202-temperature sensor, 203-height sensor, 30-bottom hydraulic cylinder, 301-mounting seat, 302-outer sleeve, 303-middle sleeve, 304-inner sleeve, 40-base, 50-connecting body, 501-upper connecting piece, 502-lower connecting piece, 503-central rotating shaft, 60-top through hole, 70-side through hole, 80-processor, 90-lifting platform, 100-bed. DETAILED DESCRIPTION

[0054] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0055] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0056] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0057] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0058] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0059] Example 1

[0060] Reference Figure 2 and Figure 3 , Figure 2 This is a schematic diagram of a new bed structure provided by the present invention for solving the problem of pressure sores in one go; Figure 3 It is a partial schematic diagram of the novel disposable bed for solving the problem of pressure sores of the present invention during use.

[0061] The novel bed of this embodiment that can solve the problem of pressure sores in all directions at one time comprises a bed body 100 and a processor 80 electrically connected to the bed body 100, wherein:

[0062] The processor 80 is electrically connected to the electronic components in the bed 100 , and the electrical connection here can be a wireless connection or a wired connection, which is not specifically limited here.

[0063] The bed body 100 includes a plate-type base 40. The base 40 may be made of metal, such as stainless steel. The base 40 needs to support other structures of the bed body 100. The use of metals such as stainless steel can ensure its durability and firmness. The thickness of the base 40 can be selected according to actual needs. The thicker the base 40 is, the better the firmness of the bed body 100 is. Of course, a buffer layer may be wrapped around the outer layer of the base 40, such as a buffer cotton material, to prevent the base 40 from being bumped during the moving process.

[0064] Above the base 40, there are at least 30 lifting platforms 90 arranged in an array. Figure 1In the figure, only 36 lifting platforms 90 (No. 1 to 36) are used for schematic illustration, and there are 6 columns of lifting platforms 90 in the left-right direction and 6 rows of lifting platforms 90 in the front-back direction. For another example, the number of lifting platforms 90 can be 35, and there are 5 columns of lifting platforms 90 in the left-right direction and 7 rows of lifting platforms 90 in the front-back direction; for another example, the number of lifting platforms 90 can be 42, and there are 6 columns of lifting platforms 90 in the left-right direction and 7 rows of lifting platforms 90 in the front-back direction. The number of lifting platforms 90 is adjusted according to the overall width and length of the bed body 100, and is not specifically limited here. When the patient lies on the lifting platform 90, since there are a large number of lifting platforms 90, they can correspond to various parts of the patient's body. For example, the three lifting platforms 90 No. 27, No. 28, and No. 29, if the body part corresponding to the lifting platform No. 28 is the back and a red mark or other mark occurs, in order to avoid bedsores or bedsores have already occurred, it is necessary to avoid the occurrence of bedsores and recover in time. Then, the lifting platform No. 28 90 will be lowered to create space for the bedsore position without causing compression between the body and the bed 100, thereby avoiding the occurrence of bedsores.

[0065] For a single lifting platform 90, the lifting platform 90 includes a bottom hydraulic cylinder 30, a support body 10 and an air cushion 20. The outer contour of the orthographic projection of the lifting platform 90 on the plane where the base 40 is located can be a rectangle or a square, wherein:

[0066] The bottom hydraulic cylinder 30 is fixedly connected to the base 40. Optionally, the bottom hydraulic cylinder 30 and the base 40 may be bolted or welded. The bottom hydraulic cylinder 30 is electrically connected to the processor 80. In response to the start signal of the processor 80, the bottom hydraulic cylinder 30 works. Figure 3 As shown, the bottom hydraulic cylinder 30 includes a mounting seat 301, an outer sleeve 302, a middle sleeve 303 and an inner sleeve 304 located on the base 40, the mounting seat 301 is fixedly connected to the base 40, the inner sleeve 304 is sleeved in the middle sleeve 303, the middle sleeve 303 is sleeved in the outer sleeve 302, and the outer sleeve 302, the middle sleeve 303 and the inner sleeve 304 are all cylindrical. The mounting seat 301 is a cubic structure, and the material of the mounting seat 301 is preferably metal, such as stainless steel. The selection of the bottom hydraulic cylinder 30 can be adjusted according to the patient's weight range.

[0067] The bottom of the support body 10 is fixedly connected to the inner sleeve 304 of the bottom hydraulic cylinder 30. The support body 10 is a cubic structure. The optional material of the support body 10 is metal. A buffer layer can be wrapped around the outer layer of the support body 10. The support body 10 needs to support the patient, and the selection of metal materials can ensure its stability. The middle sleeve 303 and the inner sleeve 304 of the bottom hydraulic cylinder 30 contract to drive the support body 10 to move downward (toward the side of the base 40), and the middle sleeve 303 and the inner sleeve 304 of the bottom hydraulic cylinder 30 extend to drive the support body 10 to move upward (away from the side of the base 40).

[0068] The bottom of the air cushion 20 is connected to the top of the support body 10. Optionally, the air cushion 20 can be detachably connected via Velcro, for example, the bottom of the air cushion 20 is connected to the furry surface of the Velcro, and the top of the support body 10 is connected to the sticky surface of the Velcro, or the bottom of the air cushion 20 is connected to the sticky surface of the Velcro, and the top of the support body 10 is connected to the furry surface of the Velcro, and the detachable connection between the air cushion 20 and the support body 10 is achieved by bonding the furry surface of the Velcro and the sticky surface of the Velcro. Each air cushion 20 can be inflated independently, and the vent is not shown in the figure. Optionally, a through hole is provided on the top of the support body 10, and the through hole is connected to the vent of the air cushion 20, thereby inflating the air cushion 20. Placing the air cushion 20 at each pressure point in this embodiment can disperse the pressure points, reduce the pressure on the local tissue, and prevent or improve pressure sores. Optionally, a soft cotton cloth may be attached to the top of the air cushion 20. For example, the cotton cloth may have a count of at least 80, such as 80 or 100. It should be noted that the higher the count, the finer the cotton yarn, and the finer, softer, and more breathable the woven cotton cloth is. In this embodiment, by attaching a cotton cloth with a count of at least 80 to the top of the air cushion 20, skin friction can be reduced and pressure sores can be improved.

[0069] Optionally, the airbag can be inflated to form an air cushion 20. The top surface of the air cushion 20 that contacts the human body is configured to be wavy to avoid the heavy pressure of the body and the spread of pressure sores. Moreover, the wavy air cushion 20 has a silicone pad material structure, which can not only prevent hard objects from piercing the air cushion 20 but also play a good role in supporting the body.

[0070] Optionally, the air cushion 20 can be adjusted according to the patient's condition and position, and can be opened without inflation. Each air cushion 20 can be inflated and deflated separately under the control of the processor 80. At the same time, in order to avoid misoperation, the air pressure between adjacent air bags should be kept consistent when they are inflated at the same time, so as to prevent the air pressure from being high or low, which may cause discomfort to the patient.

[0071] Optionally, each airbag is connected to an automatic air pump, which is electrically connected to a processor, and the processor controls the automatic air pump to inflate the airbag to form an air cushion.

[0072] Reference Figure 2 and Figure 3A pressure sensor 201 , a temperature sensor 202 , and a height sensor 203 are provided on the top of each air cushion 20 , and the pressure sensor 201 , the temperature sensor 202 , and the height sensor 203 are all electrically connected to the processor 80 . Figure 2 It is schematically shown in FIG. 2 that the lifting platform 90 No. 2 has a pressure sensor 201 , a temperature sensor 202 and a height sensor 203 . Actually, each lifting platform 90 has a pressure sensor 201 , a temperature sensor 202 and a height sensor 203 .

[0073] In this embodiment, the pressure of the patient on each air cushion 20 is detected by the pressure sensor 201. The greater the detected pressure, the more the air cushion 20 at that position is under pressure. After the preset time has passed, it is necessary to prevent pressure sores by lowering the lifting platform 90. Specifically, the pressure sensor 201 is composed of three parts: a sensitive element, a conversion element, and a measuring circuit. The sensitive element (Sensitive element, also known as a pre-converter) senses the measured quantity; the conversion element (Transduction element) converts the responsive measured quantity into an electrical parameter (such as resistance, capacitance, inductance, etc.); the measuring circuit (Measuring circuit) or the conversion circuit or the signal processing circuit connects the electrical parameter to the circuit and converts it into electrical quantity. The pressure sensor 201 of this embodiment can be a piezoresistive pressure sensor, a ceramic pressure sensor, or a piezoelectric pressure sensor.

[0074] The main component of the piezoresistive pressure sensor is a resistance strain gauge. Its working principle is the phenomenon that the resistance of the strain resistor adsorbed on the base material (the top of the air cushion 20) changes with mechanical deformation, that is, the resistance strain effect. The piezoresistive pressure sensor is connected to the Wheatstone bridge through leads. There is no external pressure and the bridge is in a balanced state (called zero position). When the sensor is pressurized, the chip resistance changes and the bridge will lose balance. If a constant current or voltage power supply is added to the bridge, the bridge will output a voltage signal corresponding to the pressure. In this way, the resistance change of the sensor is converted into a pressure signal output through the bridge.

[0075] Ceramic pressure sensors are based on the piezoresistive effect. Pressure acts directly on the front surface of the ceramic diaphragm, causing the diaphragm to deform slightly. Thick film resistors are printed on the back of the ceramic diaphragm and connected to form a Wheatstone bridge. Due to the piezoresistive effect of the varistor, the bridge generates a highly linear voltage signal that is proportional to the pressure and also proportional to the excitation voltage.

[0076] The sensitive element of the piezoelectric pressure sensor is made of piezoelectric material. The piezoelectric effect is divided into positive piezoelectric effect and inverse piezoelectric effect. The positive piezoelectric effect refers to the phenomenon that when some dielectrics are deformed by external force in a certain direction, polarization will occur inside them, and opposite positive and negative charges will appear on their two relative surfaces. When the external force is removed, it will return to a non-charged state; the inverse piezoelectric effect refers to the change in the polarity of the charge when the direction of the force changes. On the contrary, when an electric field is applied in the polarization direction of the dielectric, these dielectrics will also deform. When the electric field is removed, the deformation of the dielectric disappears. The piezoelectric pressure sensor 201 is a piezoelectric material that forms a charge on its surface when it is subjected to an external force. After the charge is amplified by the charge amplifier and the measurement circuit and the impedance is transformed, it will be converted into an electrical output that is proportional to the external force.

[0077] In this example, only the piezoresistive pressure sensor 201 is taken as an example for schematic description.

[0078] The temperature sensor 202 can sense the temperature of the object being measured and convert it into a device that can measure and transmit signals. In this embodiment, the temperature of the top of the air cushion 20 is sensed by the temperature sensor 202. If the temperature remains high, it means that the patient has been on the air cushion 20 for a certain period of time. When the temperature rises to a certain range, the lifting platform 90 is lowered to prevent pressure sores. The temperature sensor 202 in the present invention can be an infrared temperature sensor or a thermistor temperature sensor. The infrared temperature sensor calculates the surface temperature of the object by measuring the infrared energy radiated by the object. The thermistor temperature sensor uses the characteristic that resistance changes with temperature to measure temperature.

[0079] The height sensor 203 is a sensor for measuring the height of an object or the relative height. In the present embodiment, the height from the top of the air cushion 20 to the bottom of the air cushion 20 is measured by the height sensor 203. It should be noted that, since the material of the air cushion 20 is rubber, when the patient lies on the air cushion 20, the air cushion 20 will be deformed, and the height between the top of the air cushion 20 and the bottom of the air cushion 20 will change. Specifically, when the patient's body is pressed on the air cushion 20, the height between the top of the air cushion 20 and the bottom of the air cushion 20 will decrease. Optionally, the height sensor 203 in the present embodiment can be a barometric height sensor, which calculates the height from the top of the air cushion 20 to the bottom of the air cushion 20 by measuring the atmospheric pressure (the gas in the air cushion 20).

[0080] The new bed for solving the problem of pressure sores in one go provided in this embodiment uses a pressure sensor 201, a temperature sensor 202 and a height sensor 203 in combination. Specifically, the processor 80 receives the signals measured by the pressure sensor 201, the temperature sensor 202 and the height sensor 203 and performs calculations according to the following method:

[0081] y=a×U+b×V+c×W,

[0082] Wherein, y is the total voltage value calculated according to the pressure sensor 201, the temperature sensor 202 and the height sensor 203, a is the weight of the pressure, U is the voltage value measured by the pressure sensor 201, b is the weight of the temperature, V is the voltage value measured by the temperature sensor 202, c is the weight of the height, W is the voltage value measured by the height sensor 203, and a>b>c. For example, a=0.6, b=0.3, d=0.1, which is only for schematic illustration. It can be understood that when obtaining data for one of the lifting platforms 90, pressure plays a leading role, and temperature and height are secondary factors. Therefore, in the present invention, a>b>c can more accurately obtain the body pressure on one of the lifting platforms 90.

[0083] Specific, combined Figure 2 and Figure 3 The method of using the new bed of this embodiment, which solves the problem of pressure sores at one time, is as follows:

[0084] (1) Under the control of the processor 80, all the bottom hydraulic cylinders 30 work, and the middle sleeve 303 and the inner sleeve 304 extend from the outer sleeve 302, driving the support body 10 to rise to a preset position;

[0085] (2) Inflating each air cushion 20;

[0086] (3) After the patient lies on the bed 100, the pressure sensor 201, the temperature sensor 202 and the height sensor 203 on the top of each air cushion 20 respectively detect the pressure on the air cushion 20, the temperature on the top of the air cushion 20 and the height between the top of the air cushion 20 and the bottom of the air cushion 20, and send the pressure signal, temperature signal and height signal of different lifting platforms 90 to the processor 80 respectively;

[0087] (4) The processor 80 converts the pressure signal, the temperature signal and the height signal into voltage values ​​respectively, and calculates the total voltage value according to the formula y=a×U+b×V+c×W;

[0088] (5) When the total voltage value corresponding to one or more lifting platforms 90 exceeds the preset threshold range, the bottom hydraulic cylinder 30 corresponding to the one or more lifting platforms 90 is controlled to descend, and the middle sleeve 303 and the inner sleeve 304 are retracted back into the outer sleeve 302, driving the support body 10 to descend. After the corresponding lifting platform 90 descends, the patient's body at that position is suspended in the air, so that a spatial distance is generated between the body at that position and the bed body 100, thereby preventing the formation of pressure sores. Figure 3As shown, the processor 80 calculates that the total voltage value y in the lifting platform No. 28 90 exceeds the preset threshold value, and the processor 80 controls the lifting platform No. 28 90 to descend. Specifically, the bottom hydraulic cylinder 30 in the lifting platform No. 28 90 descends, and the middle sleeve 303 and the inner sleeve 304 shrink back into the outer sleeve 302, driving the support body 10 to descend. After the corresponding lifting platform 90 descends, the patient's body at position No. 28 is suspended in the air to prevent pressure sores at position No. 28.

[0089] It can be seen from the above embodiments that the novel bed for solving the problem of pressure sores in one go provided by this embodiment achieves at least the following beneficial effects:

[0090] The new bed of the present invention that solves the problem of pressure sores in one go can lower one or more lifting platforms 90 at different positions to form a space between the body and the bed body 100, thereby preventing pressure sores from occurring at corresponding positions and fundamentally solving the problem of pressure sores.

[0091] The present invention can inflate or deflate each independent air cushion 20 at the same time. After inflation, the pressure sensor 201, the temperature sensor 202 and the height sensor 203 on the top of each air cushion 20 respectively detect the pressure on the air cushion 20, the temperature on the top of the air cushion 20 and the height between the top of the air cushion 20 and the bottom of the air cushion 20, and send the pressure signal, temperature signal and height signal of different lifting platforms 90 to the processor 80 respectively; the processor 80 converts the pressure signal, temperature signal and height signal into voltage values ​​respectively, and calculates the total voltage value according to the formula y=a×U+b×V+c×W; when the total voltage value corresponding to one or several lifting platforms 90 exceeds the preset threshold range, the bottom hydraulic cylinder 30 corresponding to the one or several lifting platforms 90 is controlled to descend, and the middle sleeve 303 and the inner sleeve 304 are retracted back into the outer sleeve 302, driving the support body 10 to descend. After the corresponding lifting platform 90 descends, the patient's body at this position is suspended in the air, so that a spatial distance is generated between the body at this position and the bed body 100, thereby preventing the occurrence of pressure sores.

[0092] Example 2

[0093] Reference Figure 2 , Figure 3 as well as Figures 4 to 7 , Figure 4 It is a structural schematic diagram of a support provided by the present invention; Figure 5 It is a structural schematic diagram of another support body provided by the present invention; Figure 6 It is a schematic diagram of a combination of a support provided by the present invention; Figure 7 It is a schematic diagram of the connection between the side support plate and the support body 10 in the present invention; Figure 4 The side support plates 101 of the middle support body 10 are in a closed state. Figure 5 The side support plate 101 of the support body 10 is in an open state, Figure 6 Among them, the No. 14 lifting platform 90 and the No. 17 lifting platform 90 are in high positions, the No. 15 lifting platform 90 and the No. 16 lifting platform 90 are lowered, the right side support plate 101a of the No. 14 lifting platform 90 is opened, and the left side support plate 101b of the No. 17 lifting platform 90 is opened.

[0094] This embodiment provides a new type of bed that solves the problem of pressure sores at one time. On the basis of Embodiment 1, side support plates 101 are provided on the left and right sides of the support body 10. For the lifting platform 90 at the outer edge, only the side close to the center is provided with a side support plate 101. Figure 2 Among the support bodies 10, lift platforms 90 No. 1, 7, 13, 19, 25, and 31 have only right side support plates 101a, and lift platforms 90 No. 6, 12, 18, 24, 30, and 36 have only left side support plates 101b.

[0095] Specifically, the side of the support body 10 has a groove that is concave toward the center, and a support plate is provided in the groove. The support plate is rotatably connected to the upper side wall of the groove through a connector 50. The structure of the connector 50 is as shown in FIG. Figure 7 The connecting body 50 has an upper connecting member 501, a lower connecting member 502 and a rotating shaft 503. The upper connecting member 501 and the lower connecting member 502 are rotatably connected via the rotating shaft 503. The upper connecting member 501 is fixedly connected to the upper side wall of the groove of the supporting body 10, and the lower connecting member 502 is fixedly connected to the top of the inner side of the side supporting plate 101. The optional fixed connection is a bolt connection.

[0096] The support body 10 is a hollow cubic structure. Inside the support body 10, a trapezoidal platform 102 is fixed on the bottom plate of the support body 10. The area of ​​the upper top surface of the trapezoidal platform 102 is smaller than the area of ​​the lower bottom surface of the trapezoidal platform 102. The side of the trapezoidal platform 102 is inclined. The angle between the side of the trapezoidal platform 102 and the lower bottom surface of the trapezoidal platform 102 is less than 90°, and the angle between the side of the trapezoidal platform 102 and the upper top surface of the trapezoidal platform 102 is greater than 90°. A spherical groove is provided on the side of the trapezoidal platform 102. A spherical seat 104 is clamped in the spherical groove. The spherical seat 104 rotates in the spherical groove. A side hydraulic cylinder 103 is fixedly connected to the spherical seat 104. The other end of the side hydraulic cylinder 103 penetrates the groove on the side of the support body 10 and is fixedly connected to the side support plate 101. When the side hydraulic cylinder 103 is working, it drives the side support plate 101 to open. Figure 4 and Figure 5Only the side hydraulic cylinders 103 are schematically shown on the left and right sides, and optionally, the side hydraulic cylinders 103 are also provided on the front and rear sides. In this embodiment, a spherical seat 104 is provided to be rotatably connected with the spherical groove, so that the hydraulic cylinder can adjust the angle when working, which is conducive to the side support plate 101 moving in an oblique upward direction. The structure of the side hydraulic cylinder 103 can be the same as that of the bottom hydraulic cylinder 30, and no specific limitation is made here.

[0097] Combination Figure 6 After the patient lies on the bed 100, the pressure sensors 201, temperature sensors 202 and height sensors 203 on the tops of the air cushions 20 respectively detect the pressure on the air cushions 20, the temperature on the tops of the air cushions 20 and the height between the tops of the air cushions 20 and the bottoms of the air cushions 20, and send the pressure signals, temperature signals and height signals of different lifting platforms 90 to the processor 80 respectively; the processor 80 converts the pressure signals, temperature signals and height signals into voltage values ​​respectively, and calculates the total voltage value according to the formula y=a×U+b×V+c×W; when the total voltage values ​​corresponding to the lifting platforms 90 No. 15 and No. 16 exceed the preset threshold range, the lifting platforms 90 No. 15 and No. 16 are controlled to descend, and the patient's body at these two positions is suspended in the air, so that a spatial distance is generated between the body at these two positions and the bed 100, thereby preventing the occurrence of pressure sores. However, when the adjacent lifting platforms 15 and 16 descend at the same time, the descending area is larger, indicating that the location of the pressure sore is larger. At this time, the space vacated by the body is larger. Although the purpose of alleviating the pressure sore is achieved, the patient is prone to stepping on air or falling down during various turning activities. In the present invention, the side support plates 101 of the lifting platforms 14 and 17 adjacent to the two lifting platforms 15 and 16 are opened to form a slope to support the body. The slope formed in this way can reduce the probability of danger and improve safety.

[0098] Example 3

[0099] Combination Figures 2 to 7 ,as well as Figure 8 This embodiment provides a new type of bed that solves the problem of bedsores at one time. Based on the first embodiment, in this embodiment, a top through hole 60 is provided on the top surface of the support body 10, and a side through hole 70 is provided on the side of the support body 10. There are vents or ventilation holes on the four sides, which are convenient for atomization or ventilation treatment of the affected area, that is, the bedsore, to accelerate recovery. In addition, the top through hole 60 or the side through hole 70 and the pinhole pipeline robot arm can be remotely controlled, and through these through holes, when the patient is obese and cannot turn over or move, the pressure sore can be treated by applying medicine or other treatments by remote control of the robot arm.

[0100] The shapes of the top through hole 60 and the side through hole 70 are not specifically limited here, and are preferably circular and square for easy operation. The diameters of the top through hole 60 and the side through hole 70 are based on ventilation and the penetration of the robot arm, for example, the diameters of the through holes are 10 cm, 11 cm, 12 cm, 13 cm, etc., and are not specifically limited here.

[0101] Example 4

[0102] The present invention also provides a one-time method for solving the problem of pressure sores, combining Figures 2 to 9 , including the following steps:

[0103] S401, under the control of the processor 80, all the bottom hydraulic cylinders 30 work, the middle sleeve 303 and the inner sleeve 304 extend from the outer sleeve 302, and drive the support body 10 to rise to a preset position;

[0104] S402, inflating each air cushion 20;

[0105] S403, after the patient lies on the bed 100, the pressure sensor 201, the temperature sensor 202 and the height sensor 203 on the top of each air cushion 20 respectively detect the pressure on the air cushion 20, the temperature on the top of the air cushion 20 and the height between the top of the air cushion 20 and the bottom of the air cushion 20, and send the pressure signal, temperature signal and height signal of different lifting platforms 90 to the processor 80 respectively;

[0106] S404, the processor 80 converts the pressure signal, the temperature signal and the height signal into voltage values ​​respectively, and calculates the total voltage value according to the formula y=a×U+b×V+c×W;

[0107] S405, when the total voltage value corresponding to one or several lifting platforms 90 exceeds the preset threshold range, the bottom hydraulic cylinder 30 corresponding to the one or several lifting platforms 90 is controlled to descend, and the middle sleeve 303 and the inner sleeve 304 are retracted back into the outer sleeve 302, driving the support body 10 to descend. After the corresponding lifting platform 90 descends, the patient's body at that position is suspended in the air, so that a spatial distance is created between the body at that position and the bed body 100, thereby preventing the occurrence of pressure sores.

[0108] The beneficial effects of this method are described in Example 1 and will not be repeated here.

[0109] Optionally, the height of the lifting platform 90 located at the edge of the bed 100 is not less than the height of the lifting platform 90 in the middle area. Figure 2, No. 1, No. 2, No. 3, No. 4, No. 5, No. 6, No. 7, No. 13, No. 19, No. 25, No. 31, No. 12, No. 18, No. 24, No. 30, No. 36 lifting platforms 90 cannot be lower than other lifting platforms 90 when descending, so as to prevent the patient from falling off the bed or causing head or leg injuries when descending too low. This embodiment takes safety into consideration while solving the problem of pressure sores.

[0110] Example 5

[0111] The present invention also provides a one-time method for solving the problem of pressure sores, combining Figures 2 to 8 , and combined Fig.10 , including the following steps:

[0112] S501, under the control of the processor 80, all the bottom hydraulic cylinders 30 work, the middle sleeve 303 and the inner sleeve 304 extend from the outer sleeve 302, and drive the support body 10 to rise to a preset position;

[0113] S502, inflating each air cushion 20;

[0114] S503, after the patient lies on the bed 100, the pressure sensor 201, the temperature sensor 202 and the height sensor 203 on the top of each air cushion 20 respectively detect the pressure on the air cushion 20, the temperature on the top of the air cushion 20 and the height between the top of the air cushion 20 and the bottom of the air cushion 20, and send the pressure signal, temperature signal and height signal of different lifting platforms 90 to the processor 80 respectively;

[0115] S504, the processor 80 converts the pressure signal, the temperature signal and the height signal into voltage values ​​respectively, and calculates the total voltage value according to the formula y=a×U+b×V+c×W;

[0116] S506, when the total voltage values ​​corresponding to two adjacent lifting platforms 90 exceed the preset threshold range, the two adjacent lifting platforms 90 are controlled to descend, and the side support plates 101 of the lifting platforms 90 adjacent to the two lifting platforms 90 are opened to form a slope to support the body.

[0117] Specifically, the bottom hydraulic cylinders 30 corresponding to the two adjacent lifting platforms 90 are controlled to descend, and the middle sleeve 303 and the inner sleeve 304 are retracted back into the outer sleeve 302, thereby driving the support body 10 to descend.

[0118] This embodiment provides support for the body, and the slope formed in this way can reduce the probability of danger and improve safety.

[0119] Although some specific embodiments of the present invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A new type of bed that solves the problem of pressure sores at one time, characterized in that: include: A bed and a processor electrically connected to the bed, wherein: The bed body includes a plate-type base and at least 30 lifting platforms arranged in an array above the base, each of which includes a bottom hydraulic cylinder, a support body and an air cushion, wherein: The bottom hydraulic cylinder is fixedly connected to the base, and the bottom hydraulic cylinder includes a mounting seat, an outer sleeve, a middle sleeve and an inner sleeve located on the base, the mounting seat is fixedly connected to the base, the inner sleeve is sleeved in the middle sleeve, the middle sleeve is sleeved in the outer sleeve, the outer sleeve, the middle sleeve and the inner sleeve are all cylindrical, and the mounting seat is a cubic structure; The bottom of the support body is fixedly connected to the inner sleeve of the bottom hydraulic cylinder, and the support body is a cubic structure; The bottom of the air cushion is connected to the top of the support body, and the air cushion is detachably connected to the top of the support body through Velcro; the top of the air cushion is fitted with cotton cloth, and the count of the cotton cloth is at least 80; the processor controls each of the air cushions to be inflated and deflated separately; A pressure sensor, a temperature sensor and a height sensor are provided on the top of each air cushion, and the pressure sensor, the temperature sensor and the height sensor are all electrically connected to the processor, the pressure sensor detects the pressure of the patient on each air cushion, the temperature sensor detects the temperature of the top of the air cushion, and the height sensor measures the height from the top of the air cushion to the bottom of the air cushion; The processor receives the voltage signals measured by the pressure sensor, the temperature sensor and the height sensor, and performs calculations according to the following method: y=a×U+b×V+c×W, Among them, y is the total voltage value calculated according to the pressure sensor, the temperature sensor and the height sensor, a is the weight of pressure, U is the voltage value measured by the pressure sensor, b is the weight of temperature, V is the voltage value measured by the temperature sensor, c is the weight of height, and W is the voltage value measured by the height sensor; the processor calculates that the total voltage value y corresponding to at least one of the lifting platforms exceeds the preset threshold, and the processor controls the lifting platform to descend.

2. The novel disposable bed for solving the problem of pressure sores according to claim 1 is characterized in that: a>b>c.

3. The novel disposable bed for solving the problem of pressure sores according to claim 1 is characterized in that: The pressure sensor is a piezoresistive pressure sensor, a ceramic pressure sensor, or a piezoelectric pressure sensor; The temperature sensor is an infrared temperature sensor or a thermistor temperature sensor; And / or, the altitude sensor is a barometric altitude sensor.

4. The novel disposable bed for solving the problem of pressure sores according to claim 1 is characterized in that: The side surface of the support body has a groove sunken toward the center, a support plate is arranged in the groove, and the support plate is rotatably connected to the upper side wall of the groove through a connecting body; The support body is a hollow cubic structure. Inside the support body, a trapezoidal platform is fixed on the bottom plate of the support body. The area of ​​the upper top surface of the trapezoidal platform is smaller than the area of ​​the lower bottom surface of the trapezoidal platform. The side surface of the trapezoidal platform is inclined. The angles between the side surface of the trapezoidal platform and the lower bottom surface of the trapezoidal platform are both less than 90°, and the angles between the side surface of the trapezoidal platform and the upper top surface of the trapezoidal platform are both greater than 90°. A spherical groove is provided on the side surface of the trapezoidal platform. A spherical seat is clamped in the spherical groove. The spherical seat rotates in the spherical groove. A side hydraulic cylinder is fixedly connected to the spherical seat. The other end of the side hydraulic cylinder passes through the groove on the side surface of the support body and is fixedly connected to the side support plate. When the side hydraulic cylinder is working, it drives the side support plate to open.

5. The novel disposable bed for solving the problem of pressure sores according to claim 4 is characterized in that: The connecting body includes an upper connecting member, a lower connecting member and a rotating shaft. The upper connecting member and the lower connecting member are rotatably connected via the rotating shaft. The upper connecting member is fixedly connected to the upper side wall of the groove of the support body, and the lower connecting member is fixedly connected to the top of the inner side of the side support plate.

6. The novel disposable bed for solving the problem of pressure sores according to claim 1 is characterized in that: A top through hole is provided on the top of the support body, and a side through hole is provided on the side of the support body.

7. A one-time method for solving the problem of pressure sores, applied to the new bed according to any one of claims 1 to 6, characterized in that: Includes steps: Under the control of the processor, all the bottom hydraulic cylinders work, and the middle sleeve and the inner sleeve extend from the outer sleeve, driving the support body to rise to a preset position; Inflating each of the air cushions; After the patient lies on the bed, the pressure sensor, the temperature sensor and the height sensor on the top of each air cushion respectively detect the pressure on the air cushion, the temperature of the top of the air cushion, and the height between the top of the air cushion and the bottom of the air cushion, and send the pressure signal, temperature signal and height signal of different lifting platforms to the processor respectively; The processor converts the pressure signal, the temperature signal and the height signal into voltage values ​​respectively, and calculates the total voltage value according to the formula y=a×U+b×V+c×W; When the total voltage value corresponding to one or several of the lifting platforms exceeds a preset threshold range, the bottom hydraulic cylinder corresponding to the one or several lifting platforms is controlled to descend, and the middle sleeve and the inner sleeve are retracted back into the outer sleeve, driving the support body to descend. After the corresponding lifting platform descends, the patient's body at that position is suspended in the air, so that a spatial distance is created between the body at that position and the bed body, thereby preventing the occurrence of pressure sores.

8. The one-time method for solving the problem of pressure sores according to claim 7, characterized in that: The support body includes a side support plate; When the total voltage values ​​corresponding to two adjacent lifting platforms exceed the preset threshold range, the two adjacent lifting platforms are controlled to descend, and the side support plates of the lifting platforms adjacent to the two lifting platforms are opened to form a slope to support the body.

9. The one-time method for solving the problem of pressure sores according to claim 7, characterized in that: The height of the lifting platform located at the edge of the bed is not less than the height of the lifting platform in the middle area.

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