Multifunctional medical anti-pressure ulcer pad and control method

Abstract

The application relates to the technical field of pressure ulcer prevention, and provides a multifunctional medical pressure ulcer prevention pad and a control method. The pressure ulcer prevention pad comprises a pad body and multiple lifting parts arranged at different positions on the pad body, each lifting part is configured to drive a corresponding human body part to be lifted when being driven, so that a gap is formed between the human body part and the surface of the pad body; the control method comprises the following steps: acquiring body region information corresponding to each of the multiple lifting parts; according to a preset rotation strategy, different lifting parts are driven in turn, so that the body part corresponding to the driven lifting part is lifted to form a gap between the body part and the pad body, and the body part corresponding to the non-driven lifting part remains in contact with the pad body to obtain support; when any lifting part is driven to form a gap, air is supplied to the gap.

Description

Technical Field

[0001] This application relates to the field of pressure ulcer prevention technology, and in particular to a multifunctional medical pressure ulcer prevention pad and control method. Background Technology

[0002] Pressure ulcers (also known as bedsores or pressure injuries) are caused by prolonged pressure on local tissues, leading to continuous ischemia, hypoxia, malnutrition, and tissue ulceration and necrosis. They are a common problem in the care of long-term bedridden patients and are related to factors such as vertical pressure, shear force, friction, and skin moisture.

[0003] In related technologies, pressure ulcer prevention pads keep the body in constant contact with the pad surface. They only redistribute pressure but fail to truly remove the pressure-bearing areas from contact. The pressure-bearing areas remain attached to the pad surface, making it difficult for local moisture to dissipate and exacerbating the risk of skin maceration. Summary of the Invention

[0004] This application aims to address at least one of the technical problems existing in the related art. To this end, this application proposes a multifunctional medical pressure ulcer prevention pad and a control method thereon.

[0005] According to the first aspect of the present application, the multifunctional medical pressure ulcer control method includes a pad body and a plurality of lifting parts disposed at different positions on the pad body. Each lifting part is configured to lift a corresponding human body part when driven, so that a gap is formed between the human body part and the surface of the pad body. The control method includes: Obtain the body region information corresponding to each of the multiple lifting units; According to the preset rotation strategy, different lifting parts are driven in turn, so that the body part corresponding to the driven lifting part is raised and the gap is formed between the body part and the pad. The body part corresponding to the undriven lifting part remains in contact with the pad to obtain support. When any of the lifting parts is driven to form the gap, air is supplied to the gap.

[0006] According to one embodiment of this application, the method further includes: acquiring a body pressure distribution signal disposed on the surface of the pad, identifying a currently high-risk body area based on the body pressure distribution signal, preferentially driving the lifting part corresponding to the high-risk body area to form a gap to unload local tissue pressure, maintaining contact support between the lifting parts corresponding to the other body areas and the pad, and causing the driven lifting parts to rotate between adjacent body areas according to a set time sequence, so as to periodically achieve complete decompression of each body area while maintaining overall support.

[0007] According to one embodiment of this application, the identification of high-risk body regions based on body pressure distribution signals includes: comparing the body pressure amplitude of each pressure-sensing point in the body pressure distribution signal with a pressure threshold, clustering pressure-sensing points that continuously exceed the threshold into high-risk body regions; and, based on an ergonomic zoning template, applying a lower pressure threshold to the body regions corresponding to the sacrum, coccyx, heel, and hip bony prominences than to other regions.

[0008] According to one embodiment of this application, the rotation strategy includes: the number of driving lifting parts at any given time is less than the total number of lifting parts, so as to ensure that at least one body part always remains in contact with the pad to obtain continuous support.

[0009] According to one embodiment of this application, the rotation strategy determines the driving order based on the cumulative pressure duration of each body part. The longer the cumulative pressure duration, the higher the priority of the corresponding lifting part being driven.

[0010] According to one embodiment of this application, the plurality of lifting parts are arranged along ergonomic zones in at least two regions of the sacrum, heel, scapula, hip, and head.

[0011] According to one embodiment of this application, the air supplied to the gap is temperature- and / or humidity-regulated, and the gas temperature is within the human comfort range.

[0012] According to one embodiment of this application, when multiple lifting units are driven simultaneously to form multiple gaps, air is supplied to each gap respectively.

[0013] According to one embodiment of this application, it further includes: based on the skin humidity sensing signal, when the skin humidity in the corresponding area exceeds a threshold, increasing the air supply volume in that area or increasing the driving frequency of the lifting unit in that area.

[0014] The multifunctional medical pressure ulcer prevention pad according to the second aspect of this application includes: Cushion; Multiple lifting parts are located at different positions on the pad body. Each lifting part is configured to lift the corresponding human body part when driven, so that a gap is formed between the human body part and the surface of the pad body. An air supply unit is configured to deliver air into the gap; The controller is configured to execute the control method described above.

[0015] An electronic device according to a third aspect of this application includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the above-described multifunctional medical pressure ulcer control method.

[0016] According to a fourth aspect of this application, a non-transitory computer-readable storage medium includes a computer program that, when executed by the processor, implements the aforementioned multifunctional medical pressure ulcer control method.

[0017] According to a fifth aspect of this application, the computer program product includes a computer program that, when executed by the processor, implements the above-described multifunctional medical pressure ulcer control method.

[0018] The beneficial effects of the embodiments of this application are as follows: In the embodiments of this application, the body area information corresponding to each of the multiple lifting parts is obtained, and the body part served by each lifting part and its spatial position on the pad are obtained. Based on the body area information and according to a preset rotation strategy, different lifting parts are driven in turn to obtain a decompression state in which the driven body part is raised and detached from the pad to form a gap, while the undriven body part remains in contact and receives support. When the gap is formed, air is delivered into the gap to obtain the result that local moisture is removed and the skin microenvironment is improved. Through the synergy of the above steps, the problem of the pressure part always sticking to the pad surface and the difficulty in removing moisture in the prior art is solved, and the dynamic decompression care effect of periodically and truly detaching the pressure part from contact and combining local pressure unloading and moisture removal is achieved is realized.

[0019] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a flowchart illustrating the method for controlling the multifunctional medical pressure ulcer prevention pad provided by the present invention; Figure 2 This is a schematic diagram of the structure of the electronic device provided by the present invention; Figure 3 This is a schematic diagram of the structure of the multifunctional medical pressure ulcer prevention pad provided by the present invention. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] The following is combined with Figures 1 to 3 This application describes a multifunctional medical pressure ulcer prevention pad and its control method.

[0024] According to the embodiments of the first aspect of this application, see [link / reference]. Figure 1 This paper provides a method for controlling pressure ulcers using a multifunctional medical pressure ulcer prevention pad.

[0025] The pressure ulcer prevention pad includes a pad body and multiple lifting sections disposed at different positions on the pad body. Each lifting section is configured to raise a corresponding body part when activated, creating a gap between the body part and the pad body surface. The pad body serves as a support surface for the user's body; the lifting section is a controllable lifting actuator, correspondingly disposed below different body areas, used to lift the body part in that area off the pad body surface when activated; the gap is the air layer space created between the raised body part and the pad body surface; the body area information identifies the user's body part corresponding to each lifting section and its spatial position and zoning on the pad body; the rotation strategy is a pre-set timing rule used to control the sequential or grouped entry of each lifting section into the activated and retracted states.

[0026] Multifunctional medical pressure ulcer control methods include: Step 1: Obtain the body area information corresponding to each of the multiple lifting parts.

[0027] The pressure ulcer prevention pad reads the pre-stored correspondence between the lifting parts and body regions, obtaining the name of the body part served by each lifting part, the coordinates of that body part's arrangement on the pad, and the identifier of its corresponding ergonomic zone. In one implementation, the correspondence is entered during initial configuration based on the user's body shape and the pad's zoning, binding each lifting part to a unique body region. In this embodiment, the sacrum and coccyx correspond to the first lifting part, the heel to the second lifting part, and the scapula to the third lifting part, thereby ensuring that subsequent driving can accurately act on the target body part.

[0028] Step 2: According to the preset rotation strategy, different lifting parts are driven in turn, so that the body part corresponding to the driven lifting part is raised and the gap is formed between the body part and the pad, while the body part corresponding to the undriven lifting part remains in contact with the pad to obtain support.

[0029] The pressure ulcer prevention pad, based on the body area information obtained in step one, drives different lifting sections in turn according to a preset rotation strategy. The driven lifting section lifts its corresponding body part upwards off the pad, creating a gap between the body part and the pad, thus relieving pressure on the body part; the undriven lifting sections remain retracted, with their corresponding body parts in contact with the pad to maintain support. In one implementation, the pressure ulcer prevention pad drives each lifting section sequentially according to a set rotation cycle. Within a single cycle, only some lifting sections are driven to rise, while the rest remain in contact, ensuring that the user is always supported by the pad while experiencing periodic local relief from pressure.

[0030] Step 3: When any of the lifting parts is driven to form the gap, air is supplied to the gap.

[0031] After detecting a gap formed in a certain lifting section, the anti-pressure ulcer pad activates the corresponding air supply channel to blow air into the gap, thereby removing local moisture and improving the skin microenvironment. This gap is formed by the lifting section driven in step two; this step directly uses the gap generated in step two as the air supply target and does not generate it separately. In one implementation, the air supply is initiated with a short delay after the gap is formed to avoid interfering with the body parts during the lifting process. The air supply direction is aligned with the gap space so that the airflow passes through the air layer between the raised body part and the pad.

[0032] Based on the body area information corresponding to each of the multiple lifting parts obtained in step one, the body part served by each lifting part and its spatial position on the pad are obtained; based on this body area information and according to the preset rotation strategy in step two, different lifting parts are driven in turn, resulting in a decompression state where the driven body parts are raised and detached from the pad to form a gap, while the undriven body parts remain in contact and receive support; based on step three, air is delivered into the gap when it is formed, resulting in the removal of local moisture and improvement of the skin microenvironment; through the synergy of the above steps, the problem of the pressure-bearing parts always adhering to the pad surface and the difficulty in removing moisture, which aggravates skin maceration, in the background technology is solved, and a dynamic decompression care effect that combines periodic and genuine detachment of the pressure-bearing parts with local pressure unloading and moisture removal is achieved.

[0033] In some embodiments, the method further includes: acquiring a body pressure distribution signal disposed on the surface of the pad, identifying a currently high-risk body area based on the body pressure distribution signal, preferentially driving the lifting part corresponding to the high-risk body area to form a gap to unload local tissue pressure, maintaining contact support between the lifting parts corresponding to the other body areas and the pad, and causing the driven lifting parts to rotate between adjacent body areas according to a set time sequence, so as to periodically achieve complete decompression of each body area while maintaining overall support.

[0034] It is understood that the body pressure distribution signal is a set of electrical signals collected by multiple pressure sensing points arranged on the surface of the pad, reflecting the magnitude and distribution of pressure applied to the pad by various body parts; the high-risk pressure areas are the service areas of the lifting parts corresponding to body parts with high body pressure amplitude and a greater risk of tissue ischemia; the set timing sequence is the time arrangement for switching the drive between adjacent high-risk areas. The anti-pressure ulcer pad reads the body pressure distribution signal, locates the high-risk areas with high body pressure, prioritizes the driving of the lifting parts in the area to create a gap to unload the local pressure, while maintaining contact support in other areas, and rotates the drive between adjacent areas according to the set timing sequence, so that each area periodically receives complete decompression. In one implementation, the priority drive of the high-risk area is superimposed with the basic rotation strategy, that is, when the body pressure in a certain area is detected to exceed the warning level, a priority lifting of that area is inserted.

[0035] By acquiring body pressure distribution signals, identifying high-risk areas and prioritizing the driving of their lifting parts to unload local pressure, while maintaining contact support in other areas, and rotating between adjacent areas according to a set sequence, this overall scheme further achieves proactive and timely pressure relief for high-risk pressure areas, reducing the risk of tissue ischemia and pressure ulcers in high-risk areas, based on the aforementioned scheme of alternating driving of the lifting parts to create gaps and supply air.

[0036] In some examples, the high-risk area is the sacrococcygeal region. When the pressure relief pad continuously monitors that the pressure in the sacrococcygeal region exceeds a threshold, it preferentially drives the corresponding lifting part of the sacrococcygeal region to form a gap, and alternates between the sacrococcygeal region and the adjacent hip region at a frequency of once every three minutes until the pressure drops back below the threshold.

[0037] In some embodiments, the identification of high-risk body regions based on body pressure distribution signals includes: comparing the body pressure amplitude of each pressure-sensing point in the body pressure distribution signal with a pressure threshold, clustering pressure-sensing points that continuously exceed the threshold as high-risk body regions; and, based on an ergonomic zoning template, applying a lower pressure threshold to the body regions corresponding to the sacrum, coccyx, heel, and hip bony prominences than to other regions.

[0038] It is understood that the pressure-sensing point is a single pressure acquisition unit in the pressure sensing array on the surface of the pad; the body pressure amplitude is the pressure currently measured at that pressure-sensing point; the pressure threshold is the critical value for determining whether the body pressure is too high; the ergonomic zoning template is a pre-divided pad surface area framework according to the distribution of human bones and soft tissues, marking vulnerable areas such as the sacrococcygeal region, heel, and hip bony prominences; the sacrococcygeal region is the area corresponding to the coccyx and sacrum, the heel is the area corresponding to the heel, and the hip bony prominence is the area corresponding to the protruding hip bone. The anti-pressure sore pad compares the body pressure amplitude of each pressure-sensing point with the pressure threshold, merges spatially adjacent and consecutively exceeding the threshold pressure-sensing points into a high-risk pressure area, and applies a lower threshold to bony prominences based on the ergonomic zoning template, so that bony prominences are identified as high-risk at lower body pressure. In one implementation, the threshold for the sacrococcygeal region, heel, and hip bony prominences is 60% of that for other areas.

[0039] By first comparing the amplitude of the pressure-sensitive point with a threshold, then clustering the pressure-sensitive points that continuously exceed the threshold, and applying a lower threshold to the bony prominence area as an overall scheme, the scheme of prioritizing the high-risk area based on the aforementioned scheme of driving the high-risk area based on the body pressure distribution signal is further realized, enabling the accurate identification of high-risk areas and allowing weak parts such as bony prominences to receive decompression attention earlier.

[0040] In some examples, the pressure threshold is set to 4.0 kPa for other regions and 2.40 kPa for the sacrococcygeal region, heel, and hip bony prominences.

[0041] In some embodiments, the rotation strategy includes: the number of lifting parts driven at any given time is less than the total number of lifting parts, so as to ensure that at least one body part always remains in contact with the pad and obtains continuous support. It is understood that the continuous support refers to a state in which at least one part of the user's body remains in contact with the pad through the lifting mechanism at any given time, thus achieving stable support. When implementing the rotation strategy, the anti-pressure ulcer pad constrains the number of lifting mechanisms activated at any given time to be less than the total number of lifting mechanisms, retaining at least a portion of the lifting mechanisms in a retracted contact state, thereby ensuring that the user's body always has a support point and does not experience overall instability. In one implementation, the anti-pressure ulcer pad is configured with a total of five lifting mechanisms, with a maximum of three activated at any given time, and at least two remaining in contact.

[0042] By limiting the number of driven lifting parts to less than the total number at any given time, the system further achieves continuous support for the user and prevents the user from becoming unstable while suspended in mid-air, based on the aforementioned scheme of alternating driving of the lifting parts to create gaps and deliver air.

[0043] In some examples, the total number of lifting units is six, and no more than four lifting units are driven at any given time.

[0044] In some embodiments, the rotation strategy determines the driving order based on the cumulative pressure duration of each body part; the longer the cumulative pressure duration, the higher priority the corresponding lifting part is driven.

[0045] It is understood that the cumulative pressure duration is the accumulated time that each body part has maintained contact with the pad since the last decompression. The anti-pressure ulcer pad accumulates the pressure duration of each body part in real time. When scheduling the driving sequence for the next cycle, the lifting parts corresponding to body parts with longer cumulative pressure durations are given higher priority for driving and lifting. In one implementation, the anti-pressure ulcer pad resets the cumulative pressure duration to zero after each rotation and records the interval at which each part is decompressed.

[0046] By prioritizing the driving of parts with longer cumulative pressure duration, the overall scheme further tilts pressure reduction resources toward the parts with the longest pressure duration, making pressure reduction more balanced across all parts and avoiding prolonged local pressure.

[0047] In some examples, the body parts include the sacrococcygeal region and the heel. If the sacrococcygeal region is subjected to pressure for a cumulative duration of 30 minutes and the heel for 20 minutes, then the next rotation will prioritize driving the corresponding lifting part of the sacrococcygeal region.

[0048] In some embodiments, the plurality of lifting parts are arranged along ergonomic zones in at least two regions of the sacrum, heel, scapula, hip, and head.

[0049] It is understood that the ergonomic zoning refers to support areas divided according to the projected positions of various body parts on the mat surface when the body is in a supine position; the scapula area corresponds to the shoulder and back area, and the head area corresponds to the skull area. The anti-pressure sore mat has multiple lifting parts respectively arranged under at least two of the above-mentioned ergonomic zoning areas, so that the lifting action is precisely applied to the target body parts. In one implementation, the lifting parts are arranged in three areas: the sacrum and coccyx, the heel, and the scapula.

[0050] By arranging the lifting parts along ergonomic zones in multiple bony prominences and support areas, the aforementioned lifting parts elevate the body parts to create gaps, further achieving anatomical adaptation of the lifting action points, thus ensuring decompression covers the main vulnerable areas.

[0051] In some examples, the lifting mechanism is arranged in five regions: the sacrum and coccyx, the heel, the scapula, the hip, and the head.

[0052] In some embodiments, the air supplied to the gap is temperature- and / or humidity-regulated, and the gas temperature is within the human comfort range.

[0053] It is understood that the temperature regulation is the process of heating or cooling the supplied air to a set temperature; the humidity regulation is the process of humidifying or dehumidifying the supplied air to a set humidity; and the human comfort zone is the range of air temperatures that feel comfortable to the touch. Before supplying air to the gap, the anti-pressure sore pad treats the air according to temperature and / or humidity regulation to ensure that the temperature of the gas supplied to the gap falls within the human comfort zone. In one implementation, the air supply unit is equipped with a heating module and a humidification module, which treats the air to a temperature of 28 degrees Celsius and a relative humidity of 50% before supplying it to the gap.

[0054] By delivering temperature- and humidity-controlled air within a comfortable range into the gaps, the overall solution further enhances the comfort of the airflow and avoids skin irritation from cold or dry air, building upon the aforementioned air delivery solution.

[0055] In some examples, the human comfort range is defined as a temperature of 25 to 30 degrees Celsius.

[0056] In some embodiments, when multiple lifting units are driven simultaneously to form multiple gaps, air is supplied to each gap respectively.

[0057] It is understood that the multiple gaps are several independent air layer spaces formed simultaneously by multiple driven lifting parts. When multiple lifting parts are driven simultaneously to form multiple gaps, the anti-pressure sore pad opens the air supply channel corresponding to each gap, and supplies air to each gap respectively. In one implementation, the anti-pressure sore pad is equipped with an independent air outlet for each lifting part, so that when multiple gaps are formed simultaneously, each gap supplies air independently without interfering with each other.

[0058] By using a system of multiple gaps corresponding to air supply, the system further achieves sufficient moisture removal in each pressure-reducing zone, building upon the aforementioned air supply method to the gaps.

[0059] In some examples, there are two simultaneously driven lifting units, and the pressure ulcer pads independently deliver air to the sacrococcygeal space and the heel space, respectively.

[0060] In some embodiments, the method further includes: based on the skin humidity sensing signal, when the skin humidity in the corresponding area exceeds a threshold, increasing the air supply volume in that area or increasing the driving frequency of the lifting unit in that area.

[0061] It is understood that the skin humidity sensing signal is an electrical signal reflecting the degree of skin surface moisture collected by a humidity sensor arranged on the pad or body surface; the air supply volume is the gas volume flow rate delivered into the gap per unit time; and the driving frequency is the number of times the lifting part enters the driving lifting state per unit time. The pressure ulcer pad reads the skin humidity sensing signal, and when the skin humidity in a certain area exceeds a threshold, it increases the air supply volume in that area or increases the driving frequency of the lifting part in that area to enhance moisture dissipation. In one implementation, the pressure ulcer pad increases the air supply volume in that area by 50% when the humidity exceeds the threshold.

[0062] By increasing the air volume or driving frequency based on the skin humidity exceeding the threshold, the system further achieves adaptive enhanced ventilation and reduced immersion risk in high-humidity areas, building upon the aforementioned air delivery to gaps and alternating drive schemes.

[0063] In some examples, the skin humidity threshold is set to 70 percent relative humidity, and when this value is exceeded, the driving frequency is increased from once every ten minutes to once every five minutes.

[0064] In some embodiments, between the body region forming the gap in the elevated state and the body region maintaining contact support, the transition lifting portion located at the boundary between the two is controlled to be in a semi-elevated transition state, so that the pressure in the boundary region is between the fully elevated unloading pressure and the fully contact support pressure, so as to suppress the shear force generated on the skin surface by the pressure difference between the decompression zone and the support zone.

[0065] It is understood that the lifting state is the state where the lifting part is fully driven, causing the body part to detach from the pad and form a gap; the semi-lifted transition state is the state where the lifting part is partially driven, keeping the body part in partial contact with the pad, with pressure between full lifting and full contact; the transition lifting part is the lifting part located at the boundary between the lifting area and the contact support area; the shear force is the relative misalignment force generated between skin layers due to pressure difference; the full lifting unloading pressure is the approximately zero pressure applied to the skin in that area when the lifting part is fully lifted; the full contact support pressure is the full support pressure applied to the skin in that area when the lifting part is retracted. The anti-pressure ulcer pad controls the transition lifting part in a semi-lifted transition state at the boundary between the lifting area and the support area, allowing for a smooth transition of boundary pressure and weakening the shear force induced on the skin surface by the pressure difference on both sides. In one implementation, the lifting height of the transition lifting part is half of the full lifting height.

[0066] The overall solution, which uses a semi-lifting boundary transition section to bring the pressure between complete unloading and complete support, further smooths the pressure gradient between the decompression zone and the support zone, building upon the aforementioned solution where the lifting section raises body parts to create a gap, thus suppressing shear force damage to the skin.

[0067] In some examples, the full contact support pressure is 4.0 kPa, the full lift unloading pressure is 0.2 kPa, and the pressure during the half lift transition is controlled at 2.0 kPa.

[0068] In some embodiments, the rotation strategy controls the drive phases of adjacent lifting units to be staggered, so that body parts are raised and lowered sequentially and gradually, forming a massage-like undulation.

[0069] It is understood that the driving phase refers to the relative position of each lifting part entering the driving lifting state on the time axis; the massage-like undulation is the rhythmic rise and fall of different parts of the body as the lifting parts rise and fall in staggered phases. The anti-pressure sore pad controls the driving phases of adjacent lifting parts to be staggered, so that adjacent body parts rise and fall gradually rather than synchronously, creating a continuous undulating sensation on the body surface. In one implementation, the driving phases of adjacent lifting parts are delayed by two seconds, forming a undulation that propagates along the long axis of the body.

[0070] The overall scheme, which uses adjacent lifting parts to drive phase-shifting to create massage-like undulations, further achieves a massage effect that promotes local blood circulation, building upon the aforementioned scheme of alternating driving of lifting parts to create gaps.

[0071] In some examples, the wave propagates from the sacrococcygeal region toward the heel, with adjacent regions experiencing a phase lag of 1.5 seconds.

[0072] In some embodiments, the method further includes: monitoring the load-bearing status of the mattress to determine whether the user has left the bed, and pausing the rotation drive and turning off the air supply when it is determined that the user has left the bed.

[0073] It is understood that the "bearing state" refers to whether the pad supports the user's weight; the "leaving the bed" refers to the user leaving the pad. The anti-pressure ulcer pad determines whether the user is on the bed by monitoring the bearing state. When it is determined that the user has left the bed, the rotation drive is paused and the air supply is turned off to save energy and avoid idling. In one implementation, the anti-pressure ulcer pad determines whether the user has left the bed based on whether the overall amplitude of the body pressure distribution signal is lower than the leaving-bed threshold.

[0074] By monitoring the load status and pausing the drive and shutting off the air supply when the user leaves the bed, the system further achieves automatic energy saving and safe shutdown when the user is not in use, based on the aforementioned alternating drive and air supply scheme.

[0075] In some examples, the bed-off threshold is determined when the overall average body pressure is below 0.5 kPa for 10 seconds.

[0076] In some embodiments, the rotation strategy uses multiple objective constraints, such as decompression adequacy, support zone maintenance, fluctuation amplitude, and energy consumption, to continuously optimize the driving sequence and target gap height of each lifting unit in the future control time domain.

[0077] It is understood that the pressure relief adequacy is a measure of sufficient pressure relief for each body area; the support zone maintenance is a constraint to ensure sufficient body areas maintain contact support; the fluctuation amplitude is the setting of the intensity of the massage-style fluctuation; the energy consumption is the power consumption required for drive and air supply; the multi-objective constraint is a constraint that simultaneously considers the above multiple indicators; the rolling optimization is an optimization method that re-solves the control scheme for a future period based on the latest state in each control cycle and only executes the first segment, followed by rolling advancement; the control time domain is the length of future time covered by each optimization; and the target gap height is the desired spatial height between the lifted body part and the pad. The anti-pressure sore pad uses pressure relief adequacy, support zone maintenance, fluctuation amplitude, and energy consumption as multi-objective constraints, and rolls the solution for the drive sequence and target gap height of each lifting part in each control time domain. In one implementation, the control time domain is one minute, and the optimization is rolled over every ten seconds.

[0078] By using a multi-objective constrained rolling optimization scheme to optimize the overall drive sequence and gap height, and building upon the aforementioned gap formation scheme for the rotating drive lifting unit, a comprehensive optimization of pressure reduction, support, comfort, and energy consumption is further achieved.

[0079] In some examples, the target gap height is three to five centimeters, and the energy consumption weight is set to half of the decompression adequacy weight.

[0080] In some embodiments, the lifting unit is any one of a pneumatic lifting unit, an electric push rod, a shape memory alloy actuator, or a lead screw lifting module.

[0081] It is understood that the pneumatic lifting unit is a mechanism that uses compressed air to drive a piston or airbag to achieve lifting; the electric push rod is a mechanism that uses a motor to drive a lead screw or gear to achieve linear extension and retraction; the shape memory alloy actuator is a mechanism that utilizes the thermal deformation recovery of a shape memory alloy to generate driving force; and the lead screw lifting module is a mechanism that uses a rotating lead screw to drive a nut to achieve lifting. The lifting part of the anti-pressure sore pad can be implemented using any of the above-mentioned actuators. In one implementation, the lifting part adopts a pneumatic lifting unit, which is driven by a shared air source with the air supply unit.

[0082] By using an integrated solution that selects one of multiple drive types for the lifting unit, and building upon the aforementioned solution where the lifting unit raises the body parts to create a gap, a more flexible adaptation to product form, cost, and reliability requirements is achieved.

[0083] In some examples, the lifting mechanism uses an electric actuator with a stroke of five centimeters.

[0084] In some embodiments, the pressure ulcer pad is provided with an air supply unit, which includes a fan and an air outlet. The air outlet opens in conjunction with the drive of the corresponding lifting part and aligns with the formed gap.

[0085] It is understood that the air supply unit is a device that generates and delivers airflow; the fan is a power component that drives the airflow; the air outlet is an opening for airflow discharge; and the linkage opening means that the air outlet opens synchronously with the movement of the corresponding lifting part. When a gap is formed by the driving of a certain lifting part, the anti-pressure sore pad will link and open its corresponding air outlet to deliver air to the gap. In one implementation, the air outlet is mechanically or electrically linked to the lifting part, and the lifting part raising triggers the opening of the corresponding air outlet.

[0086] By using the overall scheme where the air outlet of the air supply unit opens in conjunction with the lifting unit and aligns with the gap, the scheme further achieves synchronization of air supply and lifting, and avoids ineffective air supply and energy waste, based on the aforementioned scheme of supplying air to the gap.

[0087] In some examples, the air outlet is a steerable air outlet that automatically steers to align with the center of the gap when raised.

[0088] In some embodiments, the method further includes: recording the duration of pressure on each body part and the rotation history, and generating a decompression care report.

[0089] It is understood that the pressure duration is a record of the cumulative pressure time for each body part; the rotation history is a record of the time, sequence, and frequency of each lifting component being driven and raised; and the decompression nursing report is a document summarizing the above information for nursing staff to review. The pressure ulcer prevention pad continuously records the pressure duration and rotation history of each body part and generates a decompression nursing report periodically. In one implementation, the decompression nursing report summarizes the number of decompressions and the cumulative decompression duration for each area on a daily basis.

[0090] By recording the duration of pressure application and rotation history and generating nursing reports, the overall solution further achieves traceability of the decompression process and quantitative management of nursing quality, based on the aforementioned rotation drive and air supply solution.

[0091] In some examples, the decompression care report includes forty decompressions of the sacrococcygeal region on the same day, with a cumulative decompression duration of two hours.

[0092] In some embodiments, a fail-safe strategy is also included: in the event of a power outage or abnormality, the lifting part is controlled to reset to the retracted state, so that the pad body maintains planar support.

[0093] It is understood that the fail-safe strategy is control logic that ensures user safety in abnormal situations; the reset refers to retracting the lifting mechanism to its initial low position; the retracted state is when the lifting mechanism is not driven and the body part is in contact with the pad; the planar support refers to the entire surface of the pad being in a flat and supportive state. When the anti-pressure ulcer pad detects a power outage or abnormality, it executes the fail-safe strategy, controlling all lifting mechanisms to reset to the retracted state to maintain planar support of the pad. In one implementation, the anti-pressure ulcer pad is equipped with a backup power supply; upon power failure, the lifting mechanism is passively triggered to retract.

[0094] By employing a fail-safe strategy that resets the device to its retracted position and maintains planar support in the event of a power outage or malfunction, the system further ensures the user's safety from falling into the air under abnormal circumstances, building upon the aforementioned scheme where the lifting mechanism raises the body to create a gap.

[0095] In some examples, the anomalies include fan stall and controller communication interruption, either of which triggers a reset.

[0096] In some embodiments, the method further includes: acquiring at least one of a heart rate signal and a blood oxygen saturation signal; when the blood oxygen saturation signal is below the lower limit threshold of blood oxygen or the heart rate signal is abnormal, increasing the decompression intensity or decompression frequency of the corresponding body area and issuing a circulatory risk warning.

[0097] It is understood that the heart rate signal is an electrical signal reflecting the heart rhythm; the blood oxygen saturation signal is a signal reflecting the blood oxygen level; the lower limit threshold for blood oxygen is a critical value for determining low blood oxygen levels; the decompression intensity is the degree of effect of the decompression action, characterized by the interval height or duration; the decompression frequency is the frequency of occurrence of the decompression action; and the circulatory risk alarm is a warning indicating potential risks to the circulatory system. The pressure ulcer prevention pad acquires at least one of the heart rate signal and the blood oxygen saturation signal. When blood oxygen is below the lower limit threshold or the heart rate is abnormal, it increases the decompression intensity or frequency in the corresponding area and issues a circulatory risk alarm. In one implementation, the pressure ulcer prevention pad increases the sacrococcygeal decompression frequency and issues an alarm when blood oxygen saturation is below 90%.

[0098] By combining a comprehensive solution that increases decompression intensity or frequency and issues an alarm based on heart rate and blood oxygen levels, the system further achieves a coordinated response and early warning for circulatory risks, building upon the aforementioned rotation drive and air supply solutions.

[0099] In some examples, the abnormal heart rate is defined as a heart rate that is consistently higher than 120 beats per minute or lower than 40 beats per minute.

[0100] In some embodiments, when the pressure relief pad also includes an air bladder, the air bladder pressure in the area corresponding to a certain lifting part is reduced before a certain lifting part is driven.

[0101] It is understood that the airbag is a flexible, inflatable air chamber within the pad, used to pre-release the supporting pressure on the body in that area before the lifting mechanism is raised. When the anti-pressure ulcer pad includes airbags, it reduces the airbag pressure in that area before driving the lifting mechanism to rise, making the lifting process smoother and avoiding interference from residual airbag pressure. In one implementation, the anti-pressure ulcer pad first deflates the airbag in that area to normal pressure before driving the lifting mechanism to rise.

[0102] By reducing the pressure of the corresponding airbag before driving the lifting unit, and building upon the aforementioned method of creating a gap by lifting the body part, a smooth transition of the lifting action is further achieved, and sudden jumps in the force on the body part are reduced.

[0103] In some examples, the airbag deflation time begins two seconds before the drive lifts and lasts for one second.

[0104] In some embodiments, the parameters of the rotation strategy can be configured by an external terminal.

[0105] It is understood that the external terminal is a mobile phone, tablet, or nursing station device that communicates with the pressure ulcer pad; the parameter configuration refers to setting or modifying the operating parameters of the rotation strategy through the external terminal, and the operating parameters include the rotation cycle, driving duration, gap height, and various thresholds. The pressure ulcer pad provides an open interface for the rotation strategy parameters, allowing nursing staff to configure it as needed via the external terminal. In one implementation, the external terminal connects to the pressure ulcer pad wirelessly and issues a command to adjust the rotation cycle from twenty minutes to fifteen minutes.

[0106] The overall solution, which allows the rotation strategy parameters to be configured by an external terminal, further realizes the personalization and on-demand adjustment of the pressure reduction strategy based on the aforementioned rotation drive lifting unit gap formation and air supply solution.

[0107] In some examples, the external terminal is a nursing handheld device that can be set to decompression frequencies for the sacrum and coccyx and the heel, respectively.

[0108] According to an embodiment of the second aspect of this application, such as Figure 3 As shown, this application provides a multifunctional medical pressure ulcer prevention pad, including a pad body 1, multiple lifting parts 2, an air supply unit, and a controller. The pad body is a support surface for supporting the user's body; the lifting parts are controllable lifting actuators, located at different positions on the pad body, each lifting part, when driven, raises the corresponding body part, creating a gap between the body part and the pad surface; the air supply unit is a device for supplying air to the gap, including a fan and an air outlet; the controller is a processing unit that controls the coordinated operation of the various components, configured to execute the multifunctional medical pressure ulcer prevention pad control method.

[0109] The controller is configured to execute a control method for a multifunctional medical pressure ulcer prevention pad. This method involves acquiring body area information corresponding to multiple lifting sections, sequentially driving different lifting sections to create gaps according to a preset rotation strategy, and controlling the air supply unit to deliver air to any gap created by driving any lifting section. This maintains overall support while periodically relieving pressure on various body parts and removing moisture. In one implementation, the controller is an embedded microcontroller that stores rotation strategy parameters and body pressure distribution recognition logic, and is connected to the lifting sections, the air supply unit, and a pressure sensor array arranged on the pad surface.

[0110] Based on the overall structure of the pad providing overall support, multiple lifting parts forming gaps at different positions when driven to allow body parts to be released from pressure, the air supply unit delivering air to the gaps to remove moisture, and the controller executing the aforementioned control method to coordinate the alternating drive and air supply, this structure solves the problem in the prior art where the pressure-bearing parts are always attached to the pad surface and moisture is difficult to dissipate, thus aggravating skin maceration. It achieves a dynamic decompression and care effect that combines periodic and genuine release of pressure-bearing parts from contact with moisture removal.

[0111] In some examples, the pad is a high-resilience sponge covered with breathable fabric, the lifting part consists of five pneumatic lifting units respectively arranged at the sacrum, heel, scapula and left and right hips, the air supply unit includes a centrifugal fan and rotatable air outlets corresponding to each lifting part, and the controller is a microcontroller for running control methods, and is externally connected to a thin-film pressure sensor array arranged on the surface of the pad and a skin humidity sensor arranged on the surface of the body.

[0112] According to the embodiments of the third aspect of this application, such as Figure 2 As shown, the electronic device may include: a processor 310, a communication interface 320, a memory 330, and a communication bus 340, wherein the processor 310, the communication interface 320, and the memory 330 communicate with each other via the communication bus 340. The processor 310 can call logical instructions in the memory 330 to execute a multifunctional medical pressure ulcer control method, which includes: Obtain the body region information corresponding to each of the multiple lifting units; According to the preset rotation strategy, different lifting parts are driven in turn, so that the body part corresponding to the driven lifting part is raised and the gap is formed between the body part and the pad. The body part corresponding to the undriven lifting part remains in contact with the pad to obtain support. When any of the lifting parts is driven to form the gap, air is supplied to the gap.

[0113] Furthermore, the logical instructions in the aforementioned memory 330 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0114] On the other hand, this application also provides a computer program product, which includes a computer program stored on a non-transitory computer-readable storage medium. The computer program includes program instructions, and when the program instructions are executed by a computer, the computer is able to execute the multifunctional medical pressure ulcer control method provided by the above methods, the method including: Obtain the body region information corresponding to each of the multiple lifting units; According to the preset rotation strategy, different lifting parts are driven in turn, so that the body part corresponding to the driven lifting part is raised and the gap is formed between the body part and the pad. The body part corresponding to the undriven lifting part remains in contact with the pad to obtain support. When any of the lifting parts is driven to form the gap, air is supplied to the gap.

[0115] According to an embodiment of the fifth aspect of this application, the application further includes a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to perform the multifunctional medical pressure ulcer control methods provided above, the method comprising: Obtain the body region information corresponding to each of the multiple lifting units; According to the preset rotation strategy, different lifting parts are driven in turn, so that the body part corresponding to the driven lifting part is raised and the gap is formed between the body part and the pad. The body part corresponding to the undriven lifting part remains in contact with the pad to obtain support. When any of the lifting parts is driven to form the gap, air is supplied to the gap.

[0116] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0117] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., including several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods of various embodiments or some parts of embodiments.

[0118] Finally, it should be noted that the above embodiments are only used to illustrate this application and are not intended to limit this application. Although this application has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications, or equivalent substitutions of the technical solutions of this application do not depart from the spirit and scope of the technical solutions of this application and should be covered within the scope of the claims of this application.

Claims

1. A method for controlling pressure ulcers with a multifunctional medical anti-pressure pad, characterized in that, The pressure ulcer prevention pad includes a pad body and a plurality of lifting parts disposed at different positions on the pad body. Each lifting part is configured to lift a corresponding human body part when driven, so that a gap is formed between the human body part and the surface of the pad body. The control method includes: Obtain the body region information corresponding to each of the multiple lifting units; According to the preset rotation strategy, different lifting parts are driven in turn, so that the body part corresponding to the driven lifting part is raised and the gap is formed between the body part and the pad. The body part corresponding to the undriven lifting part remains in contact with the pad to obtain support. When any of the lifting parts is driven to form the gap, air is supplied to the gap.

2. The control method according to claim 1, characterized in that, Also includes: The body pressure distribution signal arranged on the surface of the pad is acquired. Based on the body pressure distribution signal, the high-risk body area under pressure is identified. The lifting part corresponding to the high-risk body area is driven first to form a gap to unload the local tissue pressure. The lifting parts corresponding to the other body areas are kept in contact with the pad for support. The driven lifting parts are rotated between adjacent body areas according to a set time sequence so as to periodically achieve complete decompression of each body area while maintaining overall support.

3. The control method according to claim 2, characterized in that, The method of identifying high-risk body regions based on body pressure distribution signals includes: comparing the body pressure amplitude of each pressure-sensing point in the body pressure distribution signal with a pressure threshold, clustering pressure-sensing points that continuously exceed the threshold into high-risk body regions; and, based on an ergonomic zoning template, applying a lower pressure threshold to the body regions corresponding to the sacrum, coccyx, heel, and hip bony prominences than to other regions.

4. The control method according to claim 1, characterized in that, The rotation strategy includes: the number of lifting parts driven at any given time is less than the total number of lifting parts, so as to ensure that at least one body part always remains in contact with the pad and obtains continuous support.

5. The control method according to claim 1, characterized in that, The rotation strategy determines the driving order based on the cumulative pressure duration of each body part. The longer the cumulative pressure duration, the higher priority the corresponding lifting part is driven.

6. The control method according to claim 1, characterized in that, The plurality of lifting parts are arranged along ergonomic zones in at least two of the following areas: sacrum, heel, scapula, hip, and head.

7. The control method according to claim 1, characterized in that, The air supplied to the gap is temperature- and / or humidity-regulated, and the gas temperature is within the human comfort range.

8. The control method according to claim 1, characterized in that, When multiple lifting units are driven simultaneously to form multiple gaps, air is supplied to each gap respectively.

9. The control method according to claim 1, characterized in that, Also includes: Based on the skin humidity sensor signal, when the skin humidity in the corresponding area exceeds the threshold, the air supply volume in that area is increased or the driving frequency of the lifting unit in that area is increased.

10. A multifunctional medical pressure ulcer prevention pad, characterized in that, include: Cushion; Multiple lifting parts are located at different positions on the pad body. Each lifting part is configured to lift the corresponding human body part when driven, so that a gap is formed between the human body part and the surface of the pad body. An air supply unit is configured to deliver air into the gap; The controller is configured to perform the control method according to any one of claims 1 to 9.

Images