Disposable high-absorption anti-permeation intelligent bedspread and use method
By incorporating a humidity sensor and employing a three-layer structure design within the obstetrics and gynecology bed cover, the problem of slow absorption and rapid leakage in existing bed covers has been solved. This enables proactive early warning and efficient absorption, improving safety and comfort, and making it suitable for obstetrics and gynecology treatment scenarios.
Patent Information
- Application Number
- CN202511467494.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-14
- Publication Date
- 2026-01-09
AI Technical Summary
Existing disposable bed sheets in obstetrics and gynecology departments absorb slowly and leak quickly, lacking proactive warning capabilities, leading to contamination and discomfort. Furthermore, untimely replacement affects the operation of both mothers and medical staff.
A disposable, high-absorption, anti-permeability smart bed cover has been designed. It has a built-in humidity sensor that communicates with a receiving terminal to automatically remind you to replace it. It adopts a three-layer structure, including a water-repellent and hydrophilic dual-effect non-woven fabric, a thickened PE anti-permeability membrane, and a high-absorption resin layer. Combined with water-sensitive color-changing markings and different absorption models, it improves absorption capacity and safety.
It achieves proactive early warning for bed covers, reduces the risk of leakage, improves safety and comfort, and reduces the probability of bed cover displacement and contamination, meeting the requirements for green hospital construction.
Smart Images

Figure CN121287440A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to bed covers for obstetrics and gynecology, specifically a disposable, highly absorbent, waterproof smart bed cover and its usage method. Background Technology
[0002] During the diagnosis and treatment of diseases, obstetricians and gynecologists are easily contaminated by various bodily fluids and blood from patients. For example, during gynecological examinations and procedures, secretions and disinfectant rinsing solutions can contaminate the examination bed and the floor; similarly, amniotic fluid leakage during artificial rupture of membranes can contaminate the delivery bed; and during labor, the leakage of amniotic fluid, urine, and feces can also contaminate the delivery bed and the floor. Currently, to maintain the cleanliness and hygiene of obstetric and gynecological examination beds, ordinary cloth covers are generally used on the mattresses. However, these covers need to be used and disinfected after each patient, increasing the burden on hospitals. Although disposable covers are also used clinically, existing disposable covers often have problems such as slow absorption, rapid leakage, and backflow of moisture. In particular, obstetric bed covers are easily soaked with blood, which seriously affects surgical procedures and patients. Meanwhile, in obstetric settings, procedures such as postpartum fundal massage and newborn care require frequent turning of the mother and rapid movements by medical staff, which can easily lead to bed cover shifting and leakage. Furthermore, existing disposable bed covers lack adequate "proactive warning" capabilities and are not replaced in a timely manner. Summary of the Invention
[0003] To address the aforementioned technical problems, this invention provides a disposable, highly absorbent, and leak-proof smart bed cover that can improve proactive early warning capabilities, reduce postpartum discomfort, and prevent leakage.
[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: a disposable high-absorption and anti-permeability smart bed cover, which includes a cover body and a cover edge set around the cover body and fixed on the delivery bed mattress. The bed cover is equipped with a humidity sensor, which communicates with a receiving terminal in the delivery room. When the humidity sensor detects that the absorbency of the bed cover reaches a set value, it first transmits the detection information to the receiving terminal, and then the receiving terminal transmits the received information to the nurse station terminal, which then automatically issues a reminder message.
[0005] Preferably, the humidity sensor communicates wirelessly with the receiving terminal, and the nurse station terminal can issue audible and visual alarms and / or text reminders.
[0006] Preferably, the cover comprises, from top to bottom, a surface layer, an absorbent layer, and a bottom layer. The surface layer is made of a water-repellent and hydrophilic dual-effect nonwoven fabric. The absorbent layer includes a high-absorbency resin layer and a fluffy nonwoven fabric layer disposed below the high-absorbency resin layer. The bottom layer is made of a thickened PE anti-permeability membrane.
[0007] Preferably, the hydrophobic and hydrophilic dual-effect nonwoven fabric is coated with an antibacterial coating containing silver ions and / or zinc ions. The hydrophobic and hydrophilic dual-effect nonwoven fabric is made of microfiber material, wherein the diameter of the microfiber is <10μm.
[0008] Preferably, the superabsorbent polymer (SAP) in the superabsorbent polymer layer has an absorption rate of 300-500 times its own weight.
[0009] Preferably, the thickness of the thickened PE geomembrane is ≥0.03mm, and the bottom surface of the thickened PE geomembrane is provided with anti-slip texture.
[0010] Preferably, the height of the cover edge is 5-8cm.
[0011] Preferably, the cover is composed of three sections: headboard, middle section, and footboard. The headboard and footboard sections can be tilted relative to the middle section, and the footboard section has an opening.
[0012] This invention also provides a method for using disposable high-absorption and anti-permeability smart bed covers. The bed covers are divided into standard absorption type (500ml), high absorption type (1000ml), and super absorption type (1500ml and above) according to their absorption capacity. After the mother is admitted to the hospital, the bed cover of the corresponding model is laid out according to the type of delivery. When the nurse station terminal sends a reminder message after delivery that the bed cover needs to be changed, the bed cover of the corresponding model is replaced by the "rolled edge wrapping method".
[0013] Preferably, the cover has a water-sensitive color-changing indicator located on the area corresponding to the mother's buttocks. The mother should observe the water-sensitive color-changing indicator every 2 hours after delivery. When the indicator turns completely red or the mother feels damp, the corresponding model of bed cover should be replaced.
[0014] As can be seen from the above technical solution, the cover of this invention is equipped with a humidity sensor. When the liquid absorption of the cover reaches a set value (generally 80%), the nurse station terminal automatically sends a reminder message, preventing medical staff from forgetting to change the cover due to being busy, thus improving safety and timeliness. Furthermore, the cover of this invention adopts a three-layer structure. The surface layer of water-repellent and hydrophilic dual-effect non-woven fabric reduces the discomfort of postpartum women coming into contact with damp surfaces and prevents blood stains from remaining on the skin. The absorbent layer, composed of a high-absorbency resin layer and a fluffy non-woven fabric layer, prevents liquid from accumulating on the surface, reducing the probability of side leakage. Attached Figure Description
[0015] Figure 1 This is a communication flowchart of the present invention.
[0016] Figure 2 This is a schematic diagram of the structure of the bed cover of the present invention.
[0017] Figure 3 This is a partial enlarged cross-sectional structural diagram of the bed cover of the present invention. Detailed Implementation
[0018] The present invention will now be described in detail with reference to the accompanying drawings. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention.
[0019] like Figure 1 This invention provides a disposable, high-absorption, leak-proof smart bed cover, comprising a cover body 1 and cover edges 2 disposed around the cover body and fixed to the delivery bed mattress. A humidity sensor 3 is installed inside the bed cover, communicating with a receiving terminal 4 in the delivery room. When the humidity sensor detects that the bed cover's absorbency has reached a set value (typically 80% of the maximum absorbency), it first transmits the detection information to the receiving terminal. The receiving terminal then transmits the received information to a nurse station terminal 5, which automatically issues a reminder to prompt medical staff to change the bed cover promptly. Specifically, the humidity sensor is an ultra-thin humidity sensor that communicates wirelessly with the receiving terminal, improving convenience. The nurse station terminal can automatically issue audible and visual alarms and / or text reminders based on the information transmitted by the receiving terminal, thereby preventing medical staff from forgetting to change the bed cover due to busy schedules and improving safety.
[0020] like Figure 2 and Figure 3 The bed cover of the present invention comprises, from top to bottom, a surface layer 11, an absorbent layer 12, and a bottom layer 13. The surface layer 11 is made of a hydrophobic and hydrorepellent dual-effect nonwoven fabric 111. Its surface is hydrophobic, which can reduce blood splashes, and its interior is hydrophilic, which can guide liquid to seep down quickly, thereby avoiding blood stains remaining on the skin and reducing the discomfort of postpartum women coming into contact with damp surfaces. The absorbent layer 12 includes a superabsorbent polymer (SAP) layer 121 and a fluffy nonwoven fabric layer 122 disposed on the underside of the SAP layer. With an absorption rate of 300-500 times its own weight, it can absorb 500-1000ml of blood in a single application, covering routine postpartum bleeding and reducing the frequency of changing mattress covers. The absorbent layer of this invention adopts a gradient absorption structure, that is, the upper SAP layer can quickly lock in water, and the lower fluffy non-woven fabric layer can expand the liquid storage space and avoid local saturation leakage. Specifically, the fluffy non-woven fabric layer can slowly release the storage space and prevent liquid from accumulating in the upper layer, thereby reducing the probability of side leakage. The bottom layer 13 uses a thickened PE anti-permeability membrane with a thickness of ≥0.03mm, which can block blood and amniotic fluid from penetrating into the mattress to the greatest extent and avoid contaminating the mattress.
[0021] The surface layer 11 of this invention is coated with an antibacterial coating 112 containing silver ions and / or zinc ions to inhibit bacterial growth in the blood, reduce the probability of cross-infection, and lower the risk of postpartum infection, meeting obstetric sterility requirements. Preferably, the hydrophobic-repellent dual-effect nonwoven fabric is made of microfiber material with a diameter <10μm, providing a cotton-like feel and reducing friction and irritation to the sensitive postpartum skin. Furthermore, all materials have passed the "skin irritation test" (compliant with GB / T 18885-2020 standard) to avoid skin problems caused by material allergies. The bottom surface of the thickened PE anti-permeability membrane has an anti-slip texture 131 to increase friction with the mattress, preventing the mattress cover from shifting when the mother turns over, thereby reducing the risk of leakage due to mattress cover shifting and improving safety.
[0022] During implementation, the height of the cover edge is 5-8cm, designed as a "three-dimensional edge," which not only prevents leakage but also ensures a secure connection with the mattress. Preferably, the cover 1 consists of three sections: headboard, middle section, and footboard. The headboard section 14 and footboard section 16 can be tilted relative to the middle section 15. The footboard section has an opening 17 to accommodate the characteristics of maternity beds, which feature "adjustable headboard and delivery leg support at the footboard." Each section is reinforced to the maternity bed with elastic bands or Velcro, thereby preventing the cover from shifting or leaking due to adjustments in the maternity bed.
[0023] This invention also provides a method for using the aforementioned disposable high-absorption, leak-proof smart bed cover. Specifically, the bed covers are categorized by absorbency: a standard absorbency type (500ml), a high absorbency type (1000ml), and a super absorbency type (1500ml and above). The standard absorbency type is suitable for routine vaginal deliveries, typically absorbing around 500ml; the high absorbency type is suitable for cesarean sections / low-risk postpartum hemorrhage, typically absorbing around 1000ml; and the super absorbency type is suitable for high-risk postpartum hemorrhage, typically absorbing 1500ml and above. After the mother is admitted to the hospital, the corresponding bed cover is placed according to the delivery type to avoid resource waste or insufficient absorption. When the nurse station terminal issues a reminder to change the bed cover postpartum, the "rolled-edge wrapping method" is used to replace it with the corresponding model, thereby enhancing the bed cover's "proactive warning" capability.
[0024] As another preferred option, the cover has a water-sensitive color-changing indicator 18, such as a blue circular pattern, located on the area corresponding to the mother's buttocks. This indicator turns red upon contact with blood, and the color intensity increases with the amount of absorbed fluid. This allows medical staff to quickly determine whether the cover needs to be changed, reducing the need for frequent checks and avoiding the risk of leakage from missed changes. The mother should observe the water-sensitive color-changing indicator every 2 hours postpartum. When the indicator turns completely red or the mother feels damp, the corresponding model of cover should be replaced. When changing the cover, a "rolled-edge wrapping method" should be used, rolling the soiled side inward to prevent blood dripping. The cover should then be sealed in a medical waste bag to reduce secondary contamination. The cover can also be made of biodegradable materials, such as polylactic acid (PLA). After use, the cover can be degraded through the harmless treatment of medical waste (such as high-temperature composting), reducing plastic pollution and meeting the requirements for green hospital construction.
Claims
1. A disposable high-absorbency, leak-proof smart bed cover, comprising a cover body and cover edges disposed around the cover body and fixed to the maternity bed mattress, characterized in that: The bed cover is equipped with a humidity sensor, which communicates with a receiving terminal in the delivery room. When the humidity sensor detects that the bed cover has absorbed a set amount of liquid, it first transmits the detection information to the receiving terminal. Then, the receiving terminal transmits the received information to the nurse station terminal, which then automatically issues a reminder message.
2. The disposable high-absorption, anti-permeability smart bed cover according to claim 1, characterized in that: The humidity sensor communicates wirelessly with the receiving terminal, and the nurse station terminal can issue audible and visual alarms and / or text reminders.
3. The disposable high-absorption, anti-permeability smart bed cover according to claim 1 or 2, characterized in that: The cover consists of a top layer, an absorbent layer, and a bottom layer from top to bottom. The top layer is made of a water-repellent and hydrophilic dual-effect non-woven fabric. The absorbent layer includes a high-absorbency resin layer and a fluffy non-woven fabric layer disposed on the underside of the high-absorbency resin layer. The bottom layer is made of a thickened PE anti-permeability membrane.
4. The disposable high-absorption, anti-permeability smart bed cover according to claim 3, characterized in that: The water-repellent and hydrophilic dual-effect nonwoven fabric is coated with an antibacterial coating containing silver ions and / or zinc ions. The water-repellent and hydrophilic dual-effect nonwoven fabric is made of microfiber material, wherein the diameter of the microfiber is <10μm.
5. The disposable high-absorption, anti-permeability smart bed cover according to claim 3, characterized in that: The superabsorbent polymer (SAP) in the superabsorbent polymer layer has a water absorption ratio of 300-500 times its own weight.
6. The disposable high-absorption, anti-permeability smart bed cover according to claim 3, characterized in that: The thickness of the thickened PE geomembrane is ≥0.03mm, and the bottom surface of the thickened PE geomembrane is provided with anti-slip texture.
7. The disposable high-absorption, anti-permeability smart bed cover according to claim 1, characterized in that: The height of the cover edge is 5-8cm.
8. The disposable high-absorption, anti-permeability smart bed cover according to claim 1, characterized in that: The cover consists of three sections: headboard, middle section, and footboard. The headboard and footboard sections can be tilted relative to the middle section, and the footboard section has an opening.
9. The method of using the disposable high-absorption, anti-permeability smart bed cover according to any one of claims 1 to 8, characterized in that: The bed covers are divided into standard absorbent type (500ml), high absorbent type (1000ml), and super absorbent type (1500ml and above) according to their absorbency. After the mother is admitted to the hospital, the bed cover of the corresponding model is laid out according to the type of delivery. When the nurse station terminal sends a reminder message after delivery that the bed cover needs to be changed, the bed cover of the corresponding model is changed by "rolling and wrapping".
10. The method of using the disposable high-absorption, anti-permeability smart bed cover according to claim 9, characterized in that: The cover has a water-sensitive color-changing indicator located on the area corresponding to the mother's buttocks. The mother should observe this water-sensitive color-changing indicator every 2 hours after delivery. When the indicator turns completely red or the mother feels damp, the cover should be replaced with the corresponding model.