Pediatric surgical wound healing pressurizing device
By combining a flexible, adhesive pad and a micro-sensor with a drug-releasing layer, this design solves the problems of inaccurate pressure application, easy loosening, and friction damage in traditional pediatric surgical wound healing devices. It achieves personalized and safe pressure care, promoting wound healing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- DONGGUAN MATERNAL & CHILD HEALTH HOSPITAL
- Filing Date
- 2026-03-20
- Publication Date
- 2026-04-28
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In the current process of pediatric surgical wound healing, traditional pressure devices have problems such as inaccurate pressure application, easy loosening, friction with the skin, lack of drug-assisted healing function, and insufficient pressure monitoring, which affect the healing effect and safety.
It employs a flexible, conforming pad, a miniature pressure sensor, and a drug-releasing layer, combined with an automatic adjustment mechanism to ensure pressurization accuracy and continuous drug release. Equipped with real-time monitoring and alarm functions, it enables personalized pressurization care.
It improves the precision and comfort of pressure application, reduces skin friction and the risk of infection, ensures that the pressure intensity is within a safe range, shortens the healing period, and reduces the risk of wound infection.
Smart Images
Figure CN121926653A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of medical device technology, and in particular to a pressure device for pediatric surgical wound healing. Background Technology
[0002] Currently, after pediatric surgical treatment, continuous and stable pressure care is required during wound healing to reduce wound bleeding and edema, promote tissue adhesion and healing, and reduce the risk of scar hyperplasia. Due to children's poor self-control, active nature, delicate skin, and irregular body contours, traditional wound pressure methods (such as bandages and ordinary pressure pads) have many drawbacks: First, the tightness of the bandage depends entirely on the experience of medical staff, resulting in low precision. Too tight a bandage can lead to poor local blood circulation, causing problems such as purplish discoloration and numbness, while too loose a bandage cannot achieve effective pressure and is insufficient to suppress wound bleeding and edema. Second, during children's activities, the bandage is prone to loosening and shifting, causing the pressure to deviate and preventing sustained application of pressure. First, the location of the wound affects the healing process; second, ordinary pressure devices are mostly rigid structures that do not conform well to a child's body, easily causing friction with delicate skin, resulting in skin damage, allergies, and increased discomfort for children; third, traditional pressure devices often lack drug-assisted healing functions, and the parts in contact with the wound are inconvenient to replace, easily breeding bacteria and increasing the risk of wound infection; fourth, the lack of an effective pressure monitoring and adjustment mechanism makes it difficult for medical staff to monitor the pressure intensity in real time and dynamically adjust it according to the child's wound recovery, further affecting the quality of care. Therefore, it is necessary to provide a new pediatric surgical wound healing pressure device to solve the above-mentioned technical problems. Summary of the Invention
[0003] To address the technical problems mentioned in the background art, the present invention provides a pressure device for pediatric surgical wound healing.
[0004] The present invention is achieved by the following technical solution: a pediatric surgical wound healing pressure device, comprising: a flexible adhesive pad, wherein the flexible adhesive pad has a skin-friendly and breathable layer on the side close to the patient's wound, and a groove is formed on the outer wall of the side of the flexible adhesive pad close to the patient's wound, and an air cushion is fixedly installed on the inner wall of the side of the groove away from the patient's wound. An elastic pad is fixedly installed in the groove, and the side of the elastic pad away from the patient's wound is in contact with the side of the air cushion close to the patient's wound. The groove contains a drug-releasing layer. The side of the drug-releasing layer away from the patient's wound is attached to the side of the elastic pad that is close to the patient's wound. The side of the drug-releasing layer that is close to the patient's wound is attached to and connected to the skin-friendly and breathable layer.
[0005] As a further improvement to the above solution, the flexible adhesive pad is made of medical-grade silicone, which is soft and resilient, and can adaptively fit the curvature of the child's body parts. The skin-friendly breathable layer is made of medical-grade non-woven fabric, which is soft, breathable, and non-irritating, and has several breathable holes on its surface to promote skin breathability, avoid the skin becoming stuffy and damp due to prolonged contact, and reduce the risk of skin allergies and redness. The drug sustained-release layer is made of medical-grade sustained-release gel, which contains antibacterial, anti-inflammatory, and wound-healing drugs (such as silver ion antibacterial agents and recombinant human epidermal growth factor), which can achieve continuous sustained release of drugs, prolong the drug's action time, and assist in wound healing.
[0006] As a further improvement to the above solution, two through grooves are formed on the outer wall of the flexible adhesive pad near the patient's wound. The groove is located between the two through grooves. Adhesive tape is installed on both outer walls of the skin-friendly breathable layer. The adhesive tape is bonded to the inner wall of the through groove. A pull strap is connected to the rear side of the adhesive tape. By pulling the pull strap, the adhesive tape can be completely torn off from the through groove of the flexible adhesive pad, thereby allowing the skin-friendly breathable layer and the drug sustained-release layer to be quickly removed, realizing convenient replacement of the skin-friendly breathable layer and the drug sustained-release layer.
[0007] As a further improvement to the above solution, two grooves are symmetrically formed on the outer wall of the flexible fitting pad near the patient's wound. The grooves are located between the two grooves, and a miniature pressure sensor is installed on the groove. The miniature pressure sensor can monitor the pressure intensity. Both outer walls of the flexible fitting pad are symmetrically provided with binding components for fixing the device to the corresponding parts of the child's body. The formula relating the pressure intensity monitored by the miniature pressure sensor to the air pad inflation volume is as follows. ; in, The actual pressure applied at the wound site (kPa). The volume of air in the air cushion (mL). The pressure-volume coefficient (kPa / mL) of the air cushion is determined by the material and structure of the air cushion. The base pressure correction value (kPa) is used to correct for the effect of elastic deformation of the elastic pad. This formula provides a calculation basis for the automatic adjustment of the pressurization intensity and ensures the pressurization accuracy.
[0008] As a further improvement to the above solution, the binding assembly includes two mounting blocks, a movable plate, and binding straps. The two mounting blocks are symmetrically mounted on one outer wall of the flexible adhesive pad. The movable plate is connected to the two mounting blocks via a disassembly assembly. The binding straps are mounted on the movable plate, and adjacent binding straps are connected by Velcro. The Velcro has a fleece side and a hook side, and the fleece side and hook side are respectively connected to one end of the two adjacent binding straps. The tightness of the binding can be adjusted according to the child's body size. The formula relating the binding tightness to the fixing pressure is as follows: ; in, The fixed pressure (N) of the strap on the child's body. The coefficient of friction between the strap and the skin. The contact area between the strap and the skin (cm²) The pressure applied to the wound (kPa) is adjusted using this formula to fit the bandage according to the child's body size, ensuring the device is securely fixed without compressing the skin.
[0009] As a further improvement to the above solution, the movable plate is composed of a lower shell, an upper shell, multiple internal threaded sleeves, and multiple fixing screws. The disassembly and assembly assembly is set on the movable plate. The top of the lower shell fits against the bottom of the upper shell. Multiple internal threaded sleeves are fixedly installed in the lower shell in a rectangular array. Multiple fixing screws are slidably installed on the top of the upper shell. The bottom end of the fixing screw passes through the upper shell and is inserted into the internal threaded sleeve to be threadedly connected to the internal threaded sleeve.
[0010] As a further improvement to the above solution, the disassembly and assembly assembly includes a round rod, two fixing blocks, two fixing collars, two telescopic springs, two limiting sleeves, two connecting blocks, and two pressing blocks. The round rod is disposed inside the movable plate. The two fixing blocks are fixedly installed inside the movable plate and fixedly connected to the outer wall of the round rod. The two fixing collars are symmetrically fixedly sleeved on the outer wall of the round rod. The two limiting sleeves are symmetrically slidably installed at both ends of the round rod. The ends of the two limiting sleeves that are far apart from each other extend to the outer sides of the movable plate and pass through the two mounting blocks. The limiting sleeves are slidably connected to the movable plate and the mounting blocks. The two telescopic springs are symmetrically slidably sleeved on the round rod. One end of the telescopic spring is connected to the limiting sleeve, and the other end of the telescopic spring is connected to the fixing collar. The two connecting blocks are respectively installed on the outer walls of the two limiting sleeves. The two pressing blocks are respectively installed on the two connecting blocks. One side of the pressing block extends to the outer side of the movable plate and is slidably connected to the movable plate.
[0011] As a further improvement to the above solution, each of the outer walls of the flexible adhesive pad is equipped with a mounting plate. A miniature monitor is mounted on the bottom of the mounting plate to detect whether the patient's wound is bleeding. A controller and an inflation tube are mounted on the top of the flexible adhesive pad. The bottom end of the inflation tube extends into a groove and communicates with the air pad. A sealing cap is provided at the top of the inflation tube. The controller is electrically connected to the miniature pressure sensor and the miniature monitor. The controller has a display screen and a battery inside. The battery powers the miniature pressure sensor, the miniature monitor, and the controller. The wound bleeding detection threshold formula for the miniature monitor is as follows: ; in, The threshold for detecting bleeding (lux) is used. The light intensity reflected by normal skin (lux). This is the light intensity correction factor. The temperature difference (°C) between the monitored area and normal skin is used to detect the wound bleeding. When the intensity of the reflected light detected is lower than the threshold, it is determined to be a wound bleeding and an alarm is triggered.
[0012] As a further improvement to the above solution, the controller includes a pressure threshold setting module and a pressure regulation control module. The pressure threshold setting module can preset a safe threshold range for applying pressure to a child's wound. The pressure regulation control module is equipped with an electromagnetic control valve connected to the inflation tube. The electromagnetic control valve is fixedly installed on the inflation tube and electrically connected to the controller. When the pressure intensity detected by the micro pressure sensor exceeds the preset safe threshold, the controller controls the electromagnetic control valve to open through the pressure regulation control module, deflating the air cushion until the pressure intensity drops to within the safe threshold range. When the detected pressure intensity is lower than the preset safe threshold, the controller controls the electromagnetic control valve to open, allowing air to be inflated through the inflation tube until the pressure intensity reaches the safe threshold range, thus achieving automatic adjustment of the pressure intensity. The control formula for automatic pressure intensity adjustment is as follows: ; in, Adjust the inflation / deflation volume (mL) of the air cushion. The adjustment coefficient is (mL / kPa). The preset safe pressurization threshold (kPa) is used. For the actual applied pressure (kPa) monitored by the miniature pressure sensor, when < hour, When the value is positive, the air cushion inflates, achieving closed-loop automatic adjustment of the pressure intensity.
[0013] As a further improvement to the above solution, the controller is equipped with an alarm module, which is electrically connected to both the miniature pressure sensor and the miniature monitor. When the pressure intensity detected by the miniature pressure sensor exceeds a preset safety threshold and cannot be restored to normal through automatic adjustment, or when the miniature monitor detects abnormal bleeding or oozing from the patient's wound, the alarm module will trigger an audible and visual alarm, alerting medical staff to take timely action through flashing warning lights and a buzzer on the controller. Simultaneously, the controller can store monitoring data from the miniature pressure sensor and the miniature monitor for at least one hour, facilitating medical staff to review the wound pressure and healing status. The quantitative formula for the alarm triggering conditions is as follows: abnormal pressure alarm: ,and ; Wound bleeding alarm: and ; in, This represents the allowable deviation value for pressure strength (kPa). The threshold for the duration of the abnormality (s). The actual intensity (lux) of reflected light monitored by the miniature monitor. The reflected light intensity change rate (lux / s) is the alarm module triggers an audible and visual alarm when any of the above conditions are met.
[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention is based on a flexible, medical-grade silicone pad that can adapt to the curvature of a child's body parts. Combined with a medical-grade non-woven fabric skin-friendly and breathable layer, it is soft, non-irritating, and breathable, avoiding friction damage to children's delicate skin caused by rigid structures, reducing the risk of skin allergies and redness, improving children's wearing comfort, and reducing children's resistance caused by discomfort. 2. This invention monitors the pressure intensity in real time through a miniature pressure sensor. The controller has a built-in pressure threshold setting and adjustment module, which can automatically adjust the air volume of the air cushion to ensure that the pressure intensity is stable within the preset safety range, avoiding errors caused by manual adjustment. This prevents excessive pressure from causing poor blood circulation, and also prevents excessive pressure from affecting the healing effect, thus adapting to the personalized pressure needs of children's wound healing. 3. This invention utilizes a skin-friendly, breathable layer and a drug-releasing layer connected to a flexible adhesive pad via an adhesive tape. The pad can be quickly and completely removed and replaced using a pull strap, without touching the wound, making it convenient to operate. It also facilitates timely replacement of contaminated parts, reducing bacterial growth and lowering the risk of wound infection. The quick-release design of the movable plate further enhances the convenience of device maintenance and component replacement. 4. This invention is based on a miniature monitor to monitor abnormal states such as bleeding and oozing of wounds in real time, a miniature pressure sensor to monitor pressurization data in real time, and an alarm module to trigger an audible and visual alarm in time when an abnormality occurs, so as to remind medical staff to deal with it in time. At the same time, the controller can store more than 72 hours of monitoring data, which can be easily reviewed by medical staff, providing a basis for nursing adjustments and comprehensively ensuring the safety of children's wound care.
[0015] 5. This invention is based on a drug sustained-release layer that continuously releases antibacterial, anti-inflammatory, and wound-healing-promoting drugs, prolonging the drug's action time. In synergy with pressure care, it effectively reduces wound bleeding and edema, inhibits scar hyperplasia, accelerates wound healing, and shortens the recovery period. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is an exploded view of the assembly of the pressurization structure of the present invention; Figure 3 for Figure 2 A magnified structural diagram of part A in the middle; Figure 4 This is a schematic diagram of the assembly structure of the movable plate and the disassembly assembly in this invention; Figure 5 This is a bottom view diagram of the present invention; Figure 6 This is a schematic diagram of the strap unfolding according to the present invention; Figure 7 This is a bottom view of the straps of the present invention unfolded; Figure 8 This is a schematic diagram of the module connections in this invention.
[0017] Explanation of key symbols: 1. Flexible Adhesive Pad; 2. Skin-Friendly and Breathable Layer; 201. Ventilation Hole; 3. Groove; 4. Air Cushion; 401. Inflation Tube; 5. Elastic Pad; 6. Drug Sustained-Release Layer; 7. Through Groove; 8. Adhesive Tape; 9. Pull-Out Tape; 10. Miniature Pressure Sensor; 11. Mounting Block; 12. Movable Plate; 121. Lower Shell; 122. Upper Shell; 123. Internal Threaded Sleeve; 124. Fixing Screw; 125. Round Rod; 126. Fixing Block; 127. Fixing Collar; 128. Telescopic Spring; 129. Limiting Insert; 130. Connecting Block; 131. Pressing Block; 13. Strap; 14. Velcro; 141. Fleece Surface; 142. Hook Surface; 15. Mounting Plate; 16. Miniature Monitor; 17. Controller. Detailed Implementation
[0018] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.
[0019] Please combine Figure 1 The pediatric surgical wound healing pressure device of this embodiment includes a flexible fitting pad 1. The flexible fitting pad 1 has a skin-friendly and breathable layer 2 on the side close to the patient's wound. The outer wall of the flexible fitting pad 1 on the side close to the patient's wound has a groove 3. An air cushion 4 is fixedly installed on the inner wall of the groove 3 on the side away from the patient's wound. An elastic pad 5 is fixedly installed in the groove 3, and the side of the elastic pad 5 away from the patient's wound is in contact with the side of the air cushion 4 that is close to the patient's wound. The groove 3 is provided with a drug sustained-release layer 6. The side of the drug sustained-release layer 6 away from the patient's wound is attached to the side of the elastic pad 5 close to the patient's wound. The side of the drug sustained-release layer 6 close to the patient's wound is attached to and connected to the skin-friendly and breathable layer 2.
[0020] The flexible adhesive pad 1 is made of medical-grade silicone, which is soft and resilient, and can adapt to the curvature of a child's body. The skin-friendly breathable layer 2 is made of medical-grade non-woven fabric, which is soft, breathable, and non-irritating, and has several breathable holes 201 on its surface to promote skin breathability, avoid skin stuffiness and dampness caused by prolonged contact, and reduce the risk of skin allergies and redness. The drug sustained-release layer 6 is made of medical-grade sustained-release gel, which contains antibacterial, anti-inflammatory, and wound-healing drugs (such as silver ion antibacterial agents and recombinant human epidermal growth factor), which can achieve continuous drug release, prolong the drug's action time, and assist in wound healing.
[0021] Two through grooves 7 are formed on the outer wall of the flexible adhesive pad 1 near the patient's wound. The groove 3 is located between the two through grooves 7. Adhesive tapes 8 are installed on both outer walls of the skin-friendly breathable layer 2. The adhesive tapes 8 are bonded to the inner walls of the through grooves 7. A pull strap 9 is connected to the rear side of the adhesive tape 8. By pulling the pull strap 9, the adhesive tape 8 can be completely torn off from the through grooves 7 of the flexible adhesive pad 1, thereby allowing the skin-friendly breathable layer 2 and the drug sustained-release layer 6 to be quickly removed, realizing convenient replacement of the skin-friendly breathable layer and the drug sustained-release layer.
[0022] The flexible adhesive pad 1 has two symmetrical grooves on the outer wall of the side closest to the patient's wound. The groove 3 is located between the two grooves. A miniature pressure sensor 10 is installed on the groove. The miniature pressure sensor 10 can monitor the pressure intensity. Both outer walls of the flexible adhesive pad 1 are symmetrically provided with binding components for fixing the device to the corresponding part of the child's body. The relationship between the pressure intensity monitored by the miniature pressure sensor and the air volume of the air pad is as follows. ; in, The actual pressure applied at the wound site (kPa). The volume of air in the air cushion (mL). The pressure-volume coefficient (kPa / mL) of the air cushion is determined by the material and structure of the air cushion. The base pressure correction value (kPa) is used to correct for the effect of elastic deformation of the elastic pad. This formula provides a calculation basis for the automatic adjustment of the pressurization intensity and ensures the pressurization accuracy.
[0023] The binding assembly includes two mounting blocks 11, a movable plate 12, and binding straps 13. The two mounting blocks 11 are symmetrically mounted on one outer wall of the flexible adhesive pad 1. The movable plate 12 is connected to the two mounting blocks 11 via a disassembly assembly. The binding straps 13 are mounted on the movable plate 12. Adjacent binding straps 13 are connected by Velcro 14, which consists of a fleece side 141 and a hook side 142. The fleece side 141 and the hook side 142 are respectively connected to one end of two adjacent binding straps 13. The binding tightness can be adjusted according to the child's body size. The formula relating the binding tightness to the fixing pressure is as follows: ; in, The fixed pressure (N) of the strap on the child's body. The coefficient of friction between the strap and the skin. The contact area between the strap and the skin (cm²) The pressure applied to the wound (kPa) is adjusted using this formula to fit the bandage according to the child's body size, ensuring the device is securely fixed without compressing the skin.
[0024] The movable plate 12 is composed of a lower shell 121, an upper shell 122, multiple internal threaded sleeves 123, and multiple fixing screws 124. The disassembly and assembly assembly is set on the movable plate 12. The top of the lower shell 121 fits against the bottom of the upper shell 122. Multiple internal threaded sleeves 123 are fixedly installed in the lower shell 121 in a rectangular array. Multiple fixing screws 124 are slidably installed on the top of the upper shell 122. The bottom end of the fixing screw 124 passes through the upper shell 122 and is inserted into the internal threaded sleeve 123 to be threadedly connected to the internal threaded sleeve 123.
[0025] The assembly / disassembly system includes a round rod 125, two fixing blocks 126, two fixing collars 127, two telescopic springs 128, two limiting sleeves 129, two connecting blocks 130, and two pressing blocks 131. The round rod 125 is disposed within the movable plate 12. The two fixing blocks 126 are both fixedly installed within the movable plate 12 and fixedly connected to the outer wall of the round rod 125. The two fixing collars 127 are symmetrically fixedly sleeved on the outer wall of the round rod 125. The two limiting sleeves 129 are symmetrically slidably installed at both ends of the round rod 125, with the ends of the two limiting sleeves 129 extending away from each other to the movable plate. The two sides of the movable plate 12 extend through two mounting blocks 11. The limiting insert 129 is slidably connected to the movable plate 12 and the mounting blocks 11. Two telescopic springs 128 are symmetrically slidably sleeved on the round rod 125. One end of the telescopic spring 128 is connected to the limiting insert 129, and the other end of the telescopic spring 128 is connected to the fixing collar 127. Two connecting blocks 130 are respectively installed on the outer walls of the two limiting inserts 129. Two pressing blocks 131 are respectively installed on the two connecting blocks 130. One side of the pressing block 131 extends to the outside of one side of the movable plate 12 and is slidably connected to the movable plate 12.
[0026] Each of the flexible adhesive pads 1 has an mounting plate 15 installed on its outer wall. A miniature monitor 16 is installed at the bottom of the mounting plate 15. The miniature monitor 16 is used to detect whether the patient's wound is bleeding. A controller 17 and an inflation tube 401 are installed at the top of the flexible adhesive pad 1. The bottom end of the inflation tube 401 extends into the groove 3 and is connected to the air cushion 4. The top end of the inflation tube 401 is provided with a sealing cap. The controller 17 is electrically connected to the miniature pressure sensor 10 and the miniature monitor 16. The controller 17 is provided with a display screen and contains a battery. The battery is used to power the miniature pressure sensor 10, the miniature monitor 16, and the controller 17. The wound bleeding detection threshold formula of the miniature monitor is as follows: ; in, The threshold for detecting bleeding (lux) is used. The light intensity reflected by normal skin (lux). This is the light intensity correction factor. The temperature difference (°C) between the monitored area and normal skin is used to detect the wound bleeding. When the intensity of the reflected light detected is lower than the threshold, it is determined to be a wound bleeding and an alarm is triggered.
[0027] The controller 17 includes a pressure threshold setting module and a pressure regulation control module. The pressure threshold setting module can preset a safe threshold range for applying pressure to a child's wound. The pressure regulation control module is equipped with an electromagnetic control valve in conjunction with the inflation tube 401. The electromagnetic control valve is fixedly installed on the inflation tube 401 and electrically connected to the controller 17. When the pressure intensity detected by the miniature pressure sensor 10 exceeds the preset safe threshold, the controller 17 controls the electromagnetic control valve to open through the pressure regulation control module, deflating the air cushion 4 until the pressure intensity drops to within the safe threshold range. When the detected pressure intensity is lower than the preset safe threshold, the controller 17 controls the electromagnetic control valve to open, allowing air to be injected into the air cushion 4 through the inflation tube 401 until the pressure intensity reaches within the safe threshold range, thus achieving automatic adjustment of the pressure intensity. The control formula for automatic pressure intensity adjustment is as follows: ; in, Adjust the inflation / deflation volume (mL) of the air cushion. The adjustment coefficient is (mL / kPa). The preset safe pressurization threshold (kPa) is used. For the actual applied pressure (kPa) monitored by the miniature pressure sensor, when hour, When the value is positive, the air cushion inflates, achieving closed-loop automatic adjustment of the pressure intensity.
[0028] The controller 17 is equipped with an alarm module, which is electrically connected to both the miniature pressure sensor 10 and the miniature monitor 16. When the pressure intensity detected by the miniature pressure sensor 10 exceeds a preset safety threshold and cannot be automatically adjusted back to normal, or when the miniature monitor 16 detects abnormal bleeding or oozing from the patient's wound, the alarm module will trigger an audible and visual alarm. The alarm will alert medical staff to take timely action by flashing a warning light and emitting a buzzer on the controller 17. Simultaneously, the controller 17 can store monitoring data from the miniature pressure sensor 10 and the miniature monitor 16 for at least 72 hours, allowing medical staff to review the wound pressure and healing status. The quantitative formula for the alarm trigger condition is as follows: abnormal pressure alarm: ,and ; Wound bleeding alarm: and ; in, This represents the allowable deviation value for pressure strength (kPa). The threshold for the duration of the abnormality (s). The actual intensity (lux) of reflected light monitored by the miniature monitor. The reflected light intensity change rate (lux / s) is the alarm module triggers an audible and visual alarm when any of the above conditions are met.
[0029] The working principle of the pediatric surgical wound healing pressure device provided by this invention is as follows: First step: When using, first align the flexible fitting pad 1 with the wound according to the location of the child's wound, ensuring the skin-friendly and breathable layer 2 adheres to the child's skin. Secure the device to the corresponding part of the child's body using the straps 13 and Velcro 14 of the binding component. Follow the formula... Adjust the fit of the Velcro 14 to ensure the device is securely fixed without compressing the skin. Inflate the air cushion 4 through the inflation tube 401 according to the formula. Controlling the inflation volume, the air cushion 4 expands and pushes the elastic pad 5. The elastic pad 5 transmits pressure to the drug sustained-release layer 6, thereby forming uniform pressure on the wound. At the same time, the drug sustained-release layer 6 slowly releases antibacterial and healing-promoting drugs, which act on the wound through the air pores 201 of the skin-friendly breathable layer 2 to assist wound healing. The second step: The miniature pressure sensor 10 monitors the pressure intensity in real time and transmits the data to the controller 17. The controller 17 then... Adjust the inflation level of the air cushion 4 to ensure the pressure intensity is within the preset safety threshold range; the miniature monitor 16 monitors the wound condition in real time according to the formula. To determine if there is bleeding, if abnormalities such as bleeding or oozing are detected, or if the miniature pressure sensor 10 detects abnormal pressure intensity and cannot adjust automatically, the alarm module of the controller 17 triggers an audible and visual alarm to remind medical staff to handle the situation promptly. Third step: When it is necessary to replace the skin-friendly breathable layer 2 and the drug sustained-release layer 6, pull the pull strap 9 to tear the adhesive tape 8 from the through groove 7, and you can remove the old skin-friendly breathable layer 2 and the drug sustained-release layer 6. After replacing the new parts, you can fix the adhesive tape 8 to the through groove 7. If it is necessary to inspect the internal parts of the movable plate 12, press the pressing block 131 to drive the limiting insert 129 to compress the telescopic spring 128 and disengage from the mounting block 11, and you can remove the movable plate 12. After the inspection is completed, align the limiting insert 129 with the mounting block 11, release the pressing block 131, and the telescopic spring 128 will return to its original position and push the limiting insert 129 into the mounting block 11 to complete the fixation of the movable plate 12.
[0030] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.
Claims
1. A pressure device for pediatric surgical wound healing, characterized in that, include: A flexible adhesive pad has a skin-friendly and breathable layer on the side of the flexible adhesive pad closest to the patient's wound. A groove is formed on the outer wall of the side of the flexible adhesive pad closest to the patient's wound, and an air cushion is fixedly installed on the inner wall of the groove away from the patient's wound. An elastic pad is fixedly installed in the groove, and the side of the elastic pad away from the patient's wound is in contact with the side of the air cushion close to the patient's wound. The groove contains a drug-releasing layer. The side of the drug-releasing layer away from the patient's wound is attached to the side of the elastic pad that is close to the patient's wound. The side of the drug-releasing layer that is close to the patient's wound is attached to and connected to the skin-friendly and breathable layer.
2. The pediatric surgical wound healing pressure device as described in claim 1, characterized in that, The flexible adhesive pad is made of medical-grade silicone, which is soft and resilient, and can adaptively fit the curvature of a child's body. The skin-friendly breathable layer is made of medical-grade non-woven fabric, which is soft, breathable, and non-irritating, and has several breathable pores on its surface to promote skin ventilation, avoid skin stuffiness and dampness caused by prolonged contact, and reduce the risk of skin allergies and redness. The drug sustained-release layer is made of medical-grade sustained-release gel, which contains antibacterial, anti-inflammatory, and wound-healing drugs (such as silver ion antibacterial agents and recombinant human epidermal growth factor), enabling continuous drug release, prolonging the drug's action time, and assisting wound healing.
3. The pediatric surgical wound healing pressure device as described in claim 1, characterized in that, Two through-slots are formed on the outer wall of the flexible adhesive pad near the patient's wound. The groove is located between the two through-slots. Adhesive tape is installed on both outer walls of the skin-friendly and breathable layer. The adhesive tape is bonded to the inner wall of the through-slot. A pull strap is connected to the rear side of the adhesive tape. By pulling the pull strap, the adhesive tape can be completely torn off from the through-slot of the flexible adhesive pad, thereby allowing the skin-friendly and breathable layer and the drug-releasing layer to be quickly removed, realizing convenient replacement of the skin-friendly and breathable layer and the drug-releasing layer.
4. The pediatric surgical wound healing pressure device as described in claim 1, characterized in that, The flexible pad has two symmetrical grooves on the outer wall of the side closest to the patient's wound. The grooves are located between the two grooves. A miniature pressure sensor is installed on the groove. The miniature pressure sensor can monitor the pressure intensity. Both outer walls of the flexible pad are symmetrically provided with binding components for fixing the device to the corresponding parts of the child's body. The formula for the relationship between the pressure intensity monitored by the miniature pressure sensor and the air volume of the air pad is as follows. ； in, The actual pressure applied at the wound site (kPa). The volume of air in the air cushion (mL). The pressure-volume coefficient (kPa / mL) of the air cushion is determined by the material and structure of the air cushion. The base pressure correction value (kPa) is used to correct for the effect of elastic deformation of the elastic pad. This formula provides a calculation basis for the automatic adjustment of the pressurization intensity and ensures the pressurization accuracy.
5. The pediatric surgical wound healing pressure device as described in claim 4, characterized in that, The binding assembly includes two mounting blocks, a movable plate, and binding straps. The two mounting blocks are symmetrically mounted on one outer wall of the flexible adhesive pad. The movable plate is connected to the two mounting blocks via a disassembly assembly. The binding straps are mounted on the movable plate, and adjacent binding straps are connected by Velcro, which has a fleece side and a hook side. The fleece side and hook side are respectively connected to one end of the two adjacent binding straps. The binding tightness can be adjusted according to the child's body size. The formula relating the binding tightness to the fixing pressure is as follows: ； in, The fixed pressure (N) of the strap on the child's body. The coefficient of friction between the strap and the skin. The contact area between the strap and the skin (cm²) The pressure applied to the wound (kPa) is adjusted using this formula to fit the bandage according to the child's body size, ensuring the device is securely fixed without compressing the skin.
6. The pediatric surgical wound healing pressure device as described in claim 5, characterized in that, The movable plate is composed of a lower shell, an upper shell, multiple internal threaded sleeves, and multiple fixing screws. The disassembly and assembly assembly is set on the movable plate. The top of the lower shell fits against the bottom of the upper shell. Multiple internal threaded sleeves are fixedly installed in the lower shell in a rectangular array. Multiple fixing screws are slidably installed on the top of the upper shell. The bottom end of the fixing screw passes through the upper shell and is inserted into the internal threaded sleeve to be threadedly connected to the internal threaded sleeve.
7. The pediatric surgical wound healing pressure device as described in claim 6, characterized in that, The assembly / disassembly system includes a round rod, two fixing blocks, two fixing collars, two telescopic springs, two limiting sleeves, two connecting blocks, and two pressing blocks. The round rod is disposed inside a movable plate. The two fixing blocks are fixedly installed inside the movable plate and fixedly connected to the outer wall of the round rod. The two fixing collars are symmetrically fixedly sleeved on the outer wall of the round rod. The two limiting sleeves are symmetrically slidably installed at both ends of the round rod. The ends of the two limiting sleeves that are far apart from each other extend to the outer sides of the movable plate and pass through the two mounting blocks. The limiting sleeves are slidably connected to the movable plate and the mounting blocks. The two telescopic springs are symmetrically slidably sleeved on the round rod. One end of the telescopic spring is connected to the limiting sleeve, and the other end of the telescopic spring is connected to the fixing collar. The two connecting blocks are respectively installed on the outer walls of the two limiting sleeves. The two pressing blocks are respectively installed on the two connecting blocks. One side of the pressing block extends to the outer side of the movable plate and is slidably connected to the movable plate.
8. The pediatric surgical wound healing pressure device as described in claim 1, characterized in that, Each of the flexible adhesive pads has an mounting plate installed on its outer wall. A miniature monitor is installed at the bottom of each mounting plate to detect whether the patient's wound is bleeding. A controller and an inflation tube are installed at the top of the flexible adhesive pad. The bottom end of the inflation tube extends into a groove and connects to the air pad. The top end of the inflation tube is equipped with a sealing cap. The controller is electrically connected to the miniature pressure sensor and the miniature monitor. The controller has a display screen and a battery inside. The battery powers the miniature pressure sensor, the miniature monitor, and the controller. The wound bleeding detection threshold formula for the miniature monitor is as follows: ； in, The threshold for detecting bleeding (lux) is used. The light intensity reflected by normal skin (lux). This is the light intensity correction factor. The temperature difference (°C) between the monitored area and normal skin is used to detect the wound bleeding. When the intensity of the reflected light detected is lower than the threshold, it is determined to be a wound bleeding and an alarm is triggered.
9. The pediatric surgical wound healing pressure device as described in claim 8, characterized in that, The controller includes a pressure threshold setting module and a pressure regulation control module. The pressure threshold setting module can preset a safe pressure threshold range for children's wounds. The pressure regulation control module is equipped with an electromagnetic control valve connected to the inflation tube. The electromagnetic control valve is fixedly installed on the inflation tube and electrically connected to the controller. When the pressure intensity detected by the miniature pressure sensor exceeds the preset safe threshold, the controller controls the electromagnetic control valve to open through the pressure regulation control module, deflating the air cushion until the pressure intensity drops to within the safe threshold range. When the detected pressure intensity is lower than the preset safe threshold, the controller controls the electromagnetic control valve to open, allowing air to be inflated into the air cushion through the inflation tube until the pressure intensity reaches the safe threshold range, thus achieving automatic adjustment of the pressure intensity. The control formula for automatic pressure intensity adjustment is as follows: ； in, Adjust the inflation / deflation volume (mL) of the air cushion. The adjustment coefficient is (mL / kPa). The preset safe pressurization threshold (kPa) is used. For the actual applied pressure (kPa) monitored by the miniature pressure sensor, when < hour, When the value is positive, the air cushion inflates, achieving closed-loop automatic adjustment of the pressure intensity.
10. The pediatric surgical wound healing pressure device as described in claim 9, characterized in that, The controller is equipped with an alarm module, which is electrically connected to both a miniature pressure sensor and a miniature monitor. When the pressure intensity detected by the miniature pressure sensor exceeds a preset safety threshold and cannot be automatically adjusted back to normal, or when the miniature monitor detects abnormal bleeding or oozing from the patient's wound, the alarm module will trigger an audible and visual alarm. This will alert medical staff to take timely action by flashing a warning light and emitting a buzzer on the controller. Simultaneously, the controller can store monitoring data from the miniature pressure sensor and miniature monitor for at least one hour, allowing medical staff to review the wound pressure and healing status. The quantitative formula for the alarm triggering conditions is as follows: abnormal pressure alarm: ,and ; Wound bleeding alarm: and ; in, This represents the allowable deviation value for pressure strength (kPa). The threshold for the duration of the abnormality (s). The actual intensity (lux) of reflected light monitored by the miniature monitor. The reflected light intensity change rate (lux / s) is the alarm module triggers an audible and visual alarm when any of the above conditions are met.