Negative pressure suction type intelligent paper diaper

Abstract

The invention discloses a negative pressure suction type intelligent paper diaper, and relates to the technical field of medical instruments and hygienic products, the negative pressure suction type intelligent paper diaper comprises a paper diaper body and a negative pressure generator, the paper diaper body is sequentially provided with a waterproof outer layer, a negative pressure flow guide layer, an intelligent sensing layer, a composite absorption core body and a one-way breathable layer from outside to inside, the negative pressure generator is connected to the waistline part through a magnetic buckle. The paper diaper has the advantages of being easy to operate, high in absorption rate and low in reverse osmosis rate, on-demand adsorption is achieved through negative pressure active flow guiding, the absorption rate is increased by three times or above, and the effective service time of the paper diaper is remarkably prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices and sanitary products, and in particular to a negative pressure suction type smart diaper. Background Art

[0002] Traditional diapers rely on passive absorption, which is prone to reverse osmosis, causing the skin to become wet, and cannot monitor the excretion status in real time. Existing smart diapers mostly use humidity sensors to alarm, but lack active intervention measures.

[0003] For example, the patent application with publication number CN113208820A in the prior art has no dynamic pressure gradient to accelerate the directional migration of liquid, and has the disadvantages of low absorption rate and high reverse osmosis rate. Therefore, a negative pressure suction smart diaper is needed to solve the above technical problems. Summary of the invention

[0004] In view of this, the present invention provides a negative pressure suction smart diaper, which, compared with traditional diapers, has the characteristics of easy operation, high absorption rate and low reverse osmosis rate. It realizes on-demand adsorption through negative pressure active diversion, and the absorption rate is increased by more than three times, which significantly extends the effective use time of the diaper.

[0005] In order to achieve the above object, the present invention adopts the following technical solution:

[0006] A negative pressure suction smart diaper comprises: a diaper body and a negative pressure generator, wherein the diaper body is provided with a waterproof outer layer, a negative pressure guide layer, an intelligent sensing layer, a composite absorbent core and a one-way breathable layer in sequence from the outside to the inside, and the negative pressure generator is connected to the waistline through a magnetic buckle.

[0007] Furthermore, the waterproof outer layer is composed of a microporous elastic film and a water-repellent non-woven fabric.

[0008] Furthermore, the negative pressure guide layer is provided with a spiral radial guide groove, the groove wall of the spiral radial guide groove is coated with a hydrophobic coating, and the end of the spiral radial guide groove is connected to the negative pressure generator through an infusion tube.

[0009] Furthermore, a humidity sensor and a pressure sensor are arranged on the intelligent sensing layer, and the humidity sensor and the pressure sensor are arrayed on the humidity sensor respectively, and the humidity sensor and the pressure sensor are connected to the negative pressure generator signal.

[0010] Furthermore, the composite absorbent core comprises a cellulose mixed layer and an antibacterial water-locking layer with gradient density distribution, the cellulose mixed layer is closely attached to the antibacterial water-locking layer, and the cellulose mixed layer is divided into a surface area, a transition area and a bottom area.

[0011] Furthermore, a plurality of air holes are formed on the one-way air permeable layer, and a one-way air permeable membrane is disposed on the air holes.

[0012] Furthermore, the negative pressure generator is provided with an intelligent controller, an alarm and a recyclable battery. The negative pressure generator is connected to the diaper body through an air pipe. The negative pressure generator is electrically connected to the intelligent controller and the alarm. The intelligent controller and the alarm are both communicatively connected to the mobile terminal.

[0013] The beneficial effects of the present invention are:

[0014] The present invention is easy to use and operate. It innovatively combines a detachable negative pressure generator with an intelligent sensing layer and a gradient absorption core to establish a dynamic pressure gradient to accelerate the directional migration of liquid. The negative pressure guide layer adopts a spiral radial guide groove structure to increase the absorption speed by more than 250%. The reverse osmosis rate is controlled below 1.5% through the gradient distribution of the cellulose mixed layer and the synergistic effect of the antibacterial water-locking layer. The present invention is also reusable through the negative pressure device connected by a magnetic buckle, and can achieve on-demand adsorption in conjunction with an intelligent control system, significantly extending the effective use time of the diaper. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a cross-sectional view of a cut surface of a diaper body;

[0018] Figure 3 It is a front view of the negative pressure diversion layer;

[0019] Figure 4 It is a front view of the smart sensor layer;

[0020] Figure 5 is a cross-sectional view of a cut surface of a composite absorbent core;

[0021] Figure 6 It is a front view of the one-way breathable layer;

[0022] Among them, in the figure:

[0023] 1- diaper body; 2- negative pressure generator; 3- waterproof outer layer; 4- negative pressure diversion layer; 5- intelligent sensing layer; 6- composite absorbent core; 7- one-way breathable layer; 8- humidity sensor; 9- pressure sensor; 10- spiral radial diversion grooves; 11- antibacterial water-locking layer; 12- cellulose mixed layer; 13- air holes. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Please see attached Figure 1-6 The present invention provides a negative pressure suction smart diaper, comprising: a diaper body 1 and a negative pressure generator 2, wherein the diaper body 1 is provided with a waterproof outer layer 3, a negative pressure guide layer 4, an intelligent sensing layer 5, a composite absorbent core 6 and a one-way breathable layer 7 from the outside to the inside, and the negative pressure generator 2 is connected to the waistline through a magnetic buckle.

[0026] Preferably, the waterproof outer layer 3 is composed of a microporous elastomeric film and a water-repellent non-woven fabric. In the compounding process, hot melt adhesive compounding, hot pressing compounding or extrusion compounding techniques are used. These techniques can firmly combine the microporous elastomeric film and the fluorinated water-repellent non-woven fabric together while maintaining their respective functional properties. The composite material has both the waterproof and breathable function of the microporous elastomeric film and the water-repellent performance of the fluorinated water-repellent non-woven fabric. The unique feature is that the microporous structure allows water vapor to pass through (≥2000g / m 2 ·24h), while completely blocking liquid penetration. The flexibility of the elastomeric film ensures wearing comfort, while the water-repellent non-woven fabric achieves super-hydrophobic properties (contact angle > 150°) through surface fluorination treatment to avoid external liquid reverse osmosis.

[0027] Preferably, the negative pressure guide layer 4 is provided with a spiral radial guide groove 10, the groove wall of the spiral radial guide groove 10 is coated with a hydrophobic coating, the end of the spiral radial guide groove 10 is connected to the negative pressure generator 2 through an infusion tube, the groove width is 0.3-1.2mm, the groove depth is 0.2-0.8mm, the surface contact angle is ≤25°, and the directional migration of the liquid to the negative pressure generator 2 is accelerated by reducing the liquid adhesion. Experimental data show that compared with traditional linear grooves, the spiral radial structure can increase the liquid flow rate by 3.2 times.

[0028] Preferably, a humidity sensor 8 and a pressure sensor 9 are provided on the smart sensing layer 5, and the humidity sensor 8 and the pressure sensor 9 are arrayed on the humidity sensor 8 respectively. The humidity sensor 8 and the pressure sensor 9 are connected to the negative pressure generator 2 signal, and the detection resolution is ≤10μL. The smart sensing layer 5 monitors the liquid distribution state in real time through the capacitive detection unit on the humidity sensor 8, and the sampling frequency is 10-50Hz. When the local humidity exceeds the threshold of 30%, the negative pressure adsorption of the corresponding area is activated; the negative pressure intensity is dynamically adjusted according to the data of the pressure sensor 9, and the pressure difference gradient is controlled at 2-5kPa / m. The skin immersion time is reduced by on-demand adsorption, thereby reducing the incidence of pressure sores.

[0029] Preferably, the composite absorbent core 6 comprises a cellulose mixed layer 12 with gradient density distribution and an antibacterial water-locking layer 11, the cellulose mixed layer 12 is closely attached to the antibacterial water-locking layer 11, the cellulose mixed layer 12 is divided into a surface area, a transition area and a bottom area, the core porosity decreases by 35%-55% from the surface to the bottom, and the density of the surface area is 0.03-0.05 g / cm 3 , porosity 85-92%; density in transition zone 0.06-0.08g / cm 3 , porosity 70-80%; density of the bottom layer is 0.10-0.15g / cm 3 , porosity 50-60%, the liquid penetration rate of the composite absorbent core 6 in the vertical direction meets the following requirements: the penetration rate of the surface area ≥ 15 mm / s; the penetration rate of the bottom area ≤ 5 mm / s; the overall back permeation amount ≤ 0.8 g.

[0030] Preferably, the one-way air permeable layer 7 is provided with a plurality of air holes 13, and the air holes 13 are provided with a one-way air permeable membrane, and the air permeability in the positive direction is ≥800mL / cm 2 ·s, reverse ≤50mL / cm 2 ·s, effectively dissipating moisture and blocking external pollutants.

[0031] Preferably, the negative pressure generator 2 (the prior art will not be explained in detail) is provided with an intelligent controller, an alarm and a recyclable battery. The negative pressure generator 2 is connected to the diaper body 1 through an air supply pipe, and the negative pressure generator 2 is electrically connected to the intelligent controller and the alarm. The intelligent controller, the alarm and the mobile terminal are communicatively connected, wherein the maximum air suction rate of the negative pressure generator 2 is not less than 0.5L / min, and a dynamic negative pressure of -8kPa to -2kPa can be generated. The diaper status (such as humidity, remaining capacity) is synchronized to the mobile phone APP or the nursing platform through the Bluetooth or NB-IoT module on the intelligent controller, which is convenient for remote monitoring by nursing staff. When the composite absorbent core 6 is close to saturation (humidity ≥ 80%) or the power of the negative pressure device is lower than 10%, the alarm sounds an alarm to prompt replacement, and the recyclable battery is easy to disassemble, charge and reuse.

[0032] The specific method of use of the present invention is:

[0033] The diaper body 1 is put on the user. When the user's excrement reaches the diaper body 1, the excrement first passes through the one-way breathable layer 7, and then passes through the gradient distribution of the cellulose mixed layer 12 in the composite absorbent core 6 and the synergistic effect of the antibacterial water-locking layer 11 to control the reverse osmosis rate below 1.5%. The humidity sensor 8 and the pressure sensor 9 on the intelligent sensing layer 5 receive the excrement signal and start the negative pressure adsorption of the negative pressure generator 2. Since the spiral radial guide grooves 10 are provided on the negative pressure guide layer 4, the absorption speed is increased by more than 250%. Finally, the waterproof outer layer 3 is composed of a microporous elastomer film and a water-repellent non-woven fabric, so that the excrement cannot seep into the external environment.

[0034] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also belong to the scope of protection of the present invention.

Claims

1. A negative pressure suction smart diaper, characterized in that: The diaper comprises a diaper body (1) and a negative pressure generator (2), wherein the diaper body (1) is provided with a waterproof outer layer (3), a negative pressure guide layer (4), an intelligent sensor layer (5), a composite absorbent core (6) and a one-way air permeable layer (7) in sequence from the outside to the inside, and the negative pressure generator (2) is connected to the waistline via a magnetic buckle.

2. The negative pressure suction smart diaper according to claim 1, characterized in that: The waterproof outer layer (3) is composed of a microporous elastic film and a water-repellent non-woven fabric.

3. The negative pressure suction smart diaper according to claim 1, characterized in that: The negative pressure guide layer (4) is provided with a spiral radial guide groove (10), the groove wall of the spiral radial guide groove (10) is coated with a hydrophobic coating, and the end of the spiral radial guide groove (10) is connected to the negative pressure generator (2) through an infusion tube.

4. The negative pressure suction smart diaper according to claim 1, characterized in that: A humidity sensor (8) and a pressure sensor (9) are arranged on the intelligent sensing layer (5); the humidity sensor (8) and the pressure sensor (9) are arrayed on the intelligent sensing layer (5) respectively; and the humidity sensor (8) and the pressure sensor (9) are communicatively connected with the negative pressure generator (2).

5. The negative pressure suction smart diaper according to claim 1, characterized in that: The composite absorbent core (6) comprises a cellulose mixed layer (12) with gradient density distribution and an antibacterial water-locking layer (11), wherein the cellulose mixed layer (12) is tightly fitted with the antibacterial water-locking layer (11), and the cellulose mixed layer (12) is divided into a surface layer area, a transition area and a bottom layer area.

6. The negative pressure suction smart diaper according to claim 1, characterized in that: The one-way air permeable layer (7) is provided with a plurality of air permeable holes (13), and the air permeable holes (13) are provided with one-way air permeable membranes.

7. The negative pressure suction smart diaper according to claim 1, characterized in that: The negative pressure generator (2) is provided with an intelligent controller, an alarm and a recyclable battery. The negative pressure generator (2) is connected to the diaper body via an air supply pipe. The negative pressure generator (2) is electrically connected to the intelligent controller and the alarm. The intelligent controller and the alarm are both communicatively connected to a mobile terminal.

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