Anti-bedsore air cushion bed

Abstract

The anti-bedsore air cushion bed comprises a bottom plate, a plurality of air bag units arranged on the bottom plate and an inflation and deflation system, each air bag unit comprises an air bag and an installation connector connected to an opening in the lower end of the air bag, and the installation connectors are installed on the bottom plate and connected into the inflation and deflation system; the valve cavity is located in the center of the mounting connector and extends in the vertical direction, the first channel is communicated between the air bag and the middle of the valve cavity, and the second channel is communicated with the lower portion of the valve cavity and connected into an inflation and deflation system. A valve seat is arranged between the portions, connected into the valve cavity, of the first channel and the second channel, the upper portion of the valve cavity is matched with a valve element capable of blocking the valve seat, a penetrating hole is formed in the upper end of the valve cavity, and the upper end of the valve element is connected with a first spring penetrating into the air bag from the penetrating hole. The lower end of the valve element is connected with a second spring penetrating through the valve seat and supported at the lower end of the valve cavity. Air in the air bag can be prevented from being emptied, and the comfort of the body of a patient lying in the deflation area is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of air mattresses, and in particular to an anti-bedsore air mattress. Background Art

[0002] The anti-bedsore air mattress is a mattress specially designed for preventing and relieving bedsores. It is usually composed of multiple air cushions, and the hardness and support of the mattress can be adjusted by inflating and deflating, thereby reducing the situation where a part of the body is under long-term pressure.

[0003] For people who need to stay in bed for a long time, such as patients, the elderly or people with limited mobility, anti-bedsore air mattresses can help reduce the risk of bedsores. It can effectively disperse body weight, improve blood circulation, provide better pressure distribution, and reduce friction between the skin and the mattress.

[0004] Chinese invention patent CN110772385A discloses an anti-bedsore intelligent massage mattress cloud system, the massage mattress includes a bottom plate and a plurality of airbag units arranged on the bottom plate, the plurality of airbag units arranged in a horizontal row constitute a group of airbag massage unit groups, the adjacent airbag units of each group of airbag massage unit groups are connected through a conduit preset in the bottom plate interlayer or the upper part of the bottom plate, the outermost airbag unit of each group of airbag massage unit groups is provided with an air inlet interface, the air inlet interface of each group of airbag massage unit groups is respectively externally connected to an air circuit control switch, the air circuit control switch is externally connected to the air pump, the air pump is used to inflate the airbag unit, and the air circuit control switch is used to control the air pump to open and close the airbag unit or the amount of inflation. This patent arranges and combines multiple groups of airbag massage units, and multiple solenoid valves alternately inflate and deflate each adjacent group of airbag massage units, which can play the role of alternating massage, temporarily separate the skin from the massage mattress, and prevent it from being in contact with the massage mattress all the time, allowing the skin to breathe, promoting blood circulation, and avoiding bedsores, skin ulcers, etc. caused by long-term inactivity. When the above-mentioned massage mattress is deflated, the air in the airbags in the compressed area will be emptied, causing the patient's body to be directly supported on the harder baseboard, affecting comfort. Summary of the invention

[0005] In view of the defects in the prior art, the present invention provides an anti-bedsore air mattress to prevent the air in the air bag from being deflated, thereby ensuring the comfort of the patient lying in the deflated area.

[0006] The present invention provides an anti-bedsore air mattress, comprising a bottom plate, a plurality of airbag units arranged on the bottom plate, and an inflation and deflation system, wherein each of the airbag units comprises an airbag and a mounting joint, the lower end of the airbag is open, the mounting joint is connected to the opening at the lower end of the airbag and closes the opening of the airbag, and the mounting joint is mounted on the bottom plate and connected to the inflation and deflation system;

[0007] The mounting joint has a valve cavity located at the center of the mounting joint and extending vertically, a first channel connected between the airbag and the middle of the valve cavity, and a second channel connected to the lower part of the valve cavity and connected to the inflation and deflation system;

[0008] A valve seat is provided in the valve cavity between the first channel and the second channel where they are connected to the valve cavity. The upper part of the valve cavity is equipped with a valve core capable of sealing the valve seat. A through hole is provided at the upper end of the valve cavity. The upper end of the valve core is connected to a first spring that penetrates into the airbag through the through hole, and the lower end of the valve core is connected to a second spring that passes through the valve seat and is supported at the lower end of the valve cavity.

[0009] Furthermore, a threaded hole is provided at the center of the upper end of the mounting joint, and an inner wall of the threaded hole is provided with an extension groove extending from top to bottom and then toward the center, a plug is connected to the inner thread of the threaded hole, and the first channel is formed between the outer wall of the plug and the extension groove, and a groove is provided at the lower end of the plug to form the upper part of the valve cavity, and the through hole is opened at the upper end of the plug.

[0010] Furthermore, a top plate is provided at the upper end of the first spring.

[0011] Furthermore, the inflation and deflation system includes an air pump, a connecting cavity provided in the base plate, and an inflation tube connected between the output end of the air pump and the connecting cavity. The mounting joint of each airbag unit is detachably mounted on the base plate and connected to the connecting cavity in the base plate through the second channel.

[0012] Furthermore, a plug-in hole is provided on the base plate corresponding to each of the mounting joints, the mounting joint is made of elastic rubber, the upper end of the mounting joint is provided with a connecting portion connected to the opening at the lower end of the airbag, the lower end of the mounting joint is provided with a plug-in portion plugged into the plug-in hole, and the periphery of the mounting joint is provided with a support plate supported on the base plate between the connecting portion and the plug-in portion.

[0013] Furthermore, an annular groove is provided on the outer peripheral surface of the connecting portion, and an inner convex ring clamped in the annular groove is provided on the inner peripheral edge of the opening of the airbag.

[0014] Furthermore, an outer peripheral edge of the lower end of the plug-in portion is provided with an outer convex ring which abuts against the lower end of the plug-in hole.

[0015] Furthermore, the communicating cavity in the bottom plate is divided into a plurality of communicating cavity units by partitions, and the inflation pipe is respectively connected to each communicating cavity unit through branch pipes, and each branch pipe is provided with a solenoid valve.

[0016] Furthermore, it also includes a plurality of barometers, each of which is used to detect the air pressure in each of the connecting cavity units.

[0017] Furthermore, it also includes a pressure monitoring pad, which is laid on the airbag unit and is provided with a plurality of pressure sensing sheets which are supported on the upper ends of the airbags of the airbag units in a one-to-one correspondence.

[0018] The beneficial effects of the present invention are embodied in:

[0019] When each airbag unit is inflated, compressed air enters the lower part of the valve cavity through the second channel, and then pushes the valve core in the valve cavity to move upward, so that the first channel and the second channel in the mounting joint are connected, and the compressed air entering the valve cavity is then filled into the airbag through the first channel, thereby realizing the inflation of the airbag; when each airbag unit is deflated, the air in the airbag in the pressurized area of ​​the air mattress is pressed out, the airbag is compressed, and the height is reduced. When the height of the airbag is reduced to a certain extent, the airbag pushes the valve core to move downward through the first spring until the valve core blocks the valve seat. At this time, the first channel and the second channel are disconnected, and the air in the airbag cannot be further pressed out. This can prevent the air in the airbag from being emptied, ensure that the airbag can be maintained at a certain height, thereby preventing the patient's body from being directly supported on the hard bottom plate, ensuring the comfort of the patient's body lying in the deflated area. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0021] Figure 1 A three-dimensional diagram of an anti-bedsore air mattress provided by an embodiment of the present invention;

[0022] Figure 2 A schematic diagram of the structure of a bottom plate according to an embodiment of the present invention;

[0023] Figure 3 is a schematic structural diagram of an airbag unit according to an embodiment of the present invention;

[0024] Figure 4 A schematic diagram of the structure of the airbag unit of an embodiment of the present invention when it is flattened

[0025] Figure 5 Schematic diagram of the structure of a pressure monitoring pad according to an embodiment of the present invention.

[0026] In the attached drawings, 100-bottom plate; 110-plug hole; 120-partition plate; 200-airbag unit; 210-airbag; 211-inner convex ring; 220-installation joint; 221-valve cavity; 2211-valve seat; 2212-valve core; 2213-perforation; 2214-first spring; 2215-second spring; 222-first channel; 223-second channel; 224-threaded hole ;2241-plug;225-top plate;226-connecting part;2261-annular groove;227-plug-in part;2271-outer convex ring;228-support plate;300-inflating and deflation system;310-air pump;320-connecting cavity;330-inflating pipe;331-branch pipe;332-solenoid valve;400-barometer;500-pressure monitoring pad;510-pressure sensing sheet. DETAILED DESCRIPTION

[0027] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0028] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0029] like Figure 1-Figure 5 As shown, an embodiment of the present invention provides an anti-bedsore air mattress, comprising a base plate 100 , a plurality of air bag units 200 arranged on the base plate 100 , and an inflation and deflation system 300 .

[0030] Reference Figure 3 and Figure 4 Each airbag unit 200 includes an airbag 210 and a mounting joint 220. The lower end of the airbag 210 is open. The mounting joint 220 is connected to the opening of the lower end of the airbag 210 and closes the opening of the airbag 210. The mounting joint 220 is installed on the bottom plate 100 and connected to the inflation and deflation system 300.

[0031] The mounting joint 220 includes a valve cavity 221 located at the center of the mounting joint 220 and extending vertically, a first channel 222 connected between the airbag 210 and the middle of the valve cavity 221, and a second channel 223 connected to the lower part of the valve cavity 221 and connected to the inflation and deflation system 300.

[0032] A valve seat 2211 is provided in the valve cavity 221 between the first channel 222 and the second channel 223 where they are connected to the valve cavity 221. The upper part of the valve cavity 221 is equipped with a valve core 2212 which can seal the valve seat 2211. A through hole 2213 is provided at the upper end of the valve cavity 221. The upper end of the valve core 2212 is connected to a first spring 2214 which penetrates into the airbag 210 through the through hole 2213. The lower end of the valve core 2212 is connected to a second spring 2215 which passes through the valve seat 2211 and is supported at the lower end of the valve cavity 221.

[0033] In order to facilitate the assembly of the airbag unit 200, a threaded hole 224 is provided at the center of the upper end of the mounting joint 220, and an extension groove extending from top to bottom and then to the center is provided on the inner wall of the threaded hole 224. A plug 2241 is connected to the inner thread of the threaded hole 224, and a first channel 222 is formed between the outer wall of the plug 2241 and the extension groove. A groove is provided at the lower end of the plug 2241 to form the upper part of the valve cavity 221, and a through hole 2213 is provided at the upper end of the plug 2241. When the airbag unit 200 is assembled, the first spring 22 14 and the second spring 2215 are respectively fixed at the upper and lower ends of the valve core 2212, and then the first spring 2214 is passed from the lower end through the through hole 2213 on the plug 2241 and the valve core 2212 is installed into the groove on the lower side of the plug 2241, and then the lower end of the second spring 2215 is passed through the valve seat 2211 and the plug 2241 is screwed into the threaded hole 224 at the upper end of the mounting joint 220, and finally the opening at the lower end of the airbag 210 is fixed outside the mounting joint 220, and the assembly of the airbag unit 200 can be realized.

[0034] When the airbag 210 is flattened, it will press against the upper end of the first spring 2214 . In order to prevent the airbag 210 from being ruptured, a top plate 225 is provided at the upper end of the first spring 2214 .

[0035] like Figure 3 As shown, when each airbag unit 200 is inflated, the compressed air enters the lower part of the valve cavity 221 through the second channel 223, and then pushes the valve core 2212 in the valve cavity 221 to move upward, so that the first channel 222 and the second channel 223 in the mounting joint 220 are connected, and the compressed air entering the valve cavity 221 is then filled into the airbag 210 through the first channel 222, thereby achieving the inflation of the airbag 210; Figure 4As shown, when each airbag unit 200 is deflated, the air in the airbag 210 in the pressurized area of ​​the air mattress is pressed out, the airbag 210 is compressed, and the height is reduced. When the height of the airbag 210 is reduced to a certain extent, the airbag 210 pushes the valve core 2212 downward through the first spring 2214 until the valve core 2212 blocks the valve seat 2211. At this time, the first channel 222 and the second channel 223 are disconnected, and the air in the airbag 210 cannot be further pressed out. This can prevent the air in the airbag 210 from being emptied, ensuring that the airbag 210 can be maintained at a certain height, thereby preventing the patient's body from being directly supported on the hard bottom plate 100, ensuring the comfort of the patient's body lying in the deflated area.

[0036] Reference Figure 1 and Figure 2 The inflation and deflation system 300 includes an air pump 310, a connecting cavity 320 provided in the base plate 100, and an inflation tube 330 connected between the output end of the air pump 310 and the connecting cavity 320. The mounting joint 220 of each airbag unit 200 is detachably mounted on the base plate 100 and connected to the connecting cavity 320 in the base plate 100 through the second channel 223. The airbag unit 200 is detachably connected to the base plate 100, and the airbag unit 200 can be replaced if damaged.

[0037] In order to facilitate the installation and disassembly of the airbag unit 200, a plug-in hole 110 is provided on the base plate 100 corresponding to each mounting joint 220. The mounting joint 220 is made of elastic rubber. The upper end of the mounting joint 220 is provided with a connecting portion 226 connected to the opening at the lower end of the airbag 210, and the lower end of the mounting joint 220 is provided with a plug-in portion 227 plugged into the plug-in hole 110. The periphery of the mounting joint 220 is provided with a support plate 228 supported on the base plate 100 between the connecting portion 226 and the plug-in portion 227.

[0038] In order to facilitate the assembly between the airbag 210 and the mounting joint 220 , an annular groove 2261 is provided on the outer circumferential surface of the connecting portion 226 , and an inner convex ring 211 which is clamped in the annular groove 2261 is provided on the inner circumferential edge of the opening of the airbag 210 .

[0039] In addition, the outer periphery of the lower end of the plug-in portion 227 is provided with an outer convex ring 2271 that abuts against the lower end of the plug-in hole 110 , so that the plug-in portion 227 is not easily pulled out after being inserted into the plug-in hole 110 , thereby improving the stability of the installation of the airbag unit 200 .

[0040] Reference Figure 2The connecting cavity 320 in the bottom plate 100 is divided into a plurality of connecting cavity 320 units by a partition 120. The inflation tube 330 is connected to each connecting cavity 320 unit through a branch pipe 331. Each branch pipe 331 is provided with a solenoid valve 332. The solenoid valve 332 alternately controls the inflation pump 310 to inflate and deflate the airbag unit 200 on each connecting cavity 320 unit, thereby avoiding long-term pressure on various parts of the patient's body and effectively preventing tissue ulceration and necrosis caused by continuous ischemia, hypoxia, and malnutrition.

[0041] Continue to refer to Figure 2 The anti-bedsore air mattress also includes a plurality of barometers 400, each barometer 400 is used to detect the air pressure in each connecting cavity 320 unit, so that the air pressure in each connecting cavity 320 unit can be monitored by the barometer 400 to ensure that the air pressure meets the inflation requirement.

[0042] Reference Figure 5 The anti-bedsore air mattress also includes a pressure monitoring pad 500, which is laid on the airbag unit 200. The pressure monitoring pad 500 is provided with a plurality of pressure sensing sheets 510 which are supported one by one on the upper ends of the airbags 210 of each airbag unit 200, so that the pressure of each point where the patient's skin contacts the anti-bedsore air mattress can be detected through the pressure sensing sheets 510.

[0043] During the process of inflating the connecting chamber 320 unit, if the barometer 400 detects that the air pressure of the connecting chamber 320 unit continues to drop after inflation, it means that the airbag unit 200 on the upper side of the connecting chamber 320 unit is damaged. At this time, if the pressure monitoring pad 500 detects that the pressure value of a certain point is significantly smaller than the pressure values ​​of the surrounding pressure points, then the airbag unit 200 corresponding to the point, if the pressure monitoring pad 500 detects that there is no abnormality in the pressure values ​​of each pressure point, then it means that the airbag unit 200 in the non-pressurized area on the upper side of the connecting chamber 320 unit is damaged. Find the damaged airbag unit 200 and align it for replacement.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. An anti-bedsore air mattress, comprising a bottom plate, a plurality of airbag units arranged on the bottom plate, and an inflation and deflation system, wherein each of the airbag units comprises an airbag and a mounting joint, the lower end of the airbag is open, the mounting joint is connected to the opening at the lower end of the airbag and closes the opening of the airbag, and the mounting joint is mounted on the bottom plate and connected to the inflation and deflation system, characterized in that: The mounting joint has a valve cavity located at the center of the mounting joint and extending vertically, a first channel connected between the airbag and the middle of the valve cavity, and a second channel connected to the lower part of the valve cavity and connected to the inflation and deflation system; A valve seat is provided in the valve cavity between the first channel and the second channel where they are connected to the valve cavity. The upper part of the valve cavity is equipped with a valve core capable of sealing the valve seat. A through hole is provided at the upper end of the valve cavity. The upper end of the valve core is connected to a first spring that penetrates into the airbag through the through hole, and the lower end of the valve core is connected to a second spring that passes through the valve seat and is supported at the lower end of the valve cavity.

2. The anti-bedsore air mattress according to claim 1, characterized in that: A threaded hole is provided at the center of the upper end of the mounting joint, and an extension groove is provided on the inner wall of the threaded hole and extends from top to bottom and then to the center. A plug is connected to the inner thread of the threaded hole, and the first channel is formed between the outer wall of the plug and the extension groove. A groove is provided at the lower end of the plug to form the upper part of the valve cavity, and the through hole is opened at the upper end of the plug.

3. The anti-bedsore air mattress according to claim 1, characterized in that: A top plate is provided at the upper end of the first spring.

4. The anti-bedsore air mattress according to claim 1, characterized in that: The inflation and deflation system includes an air pump, a connecting cavity arranged in the base plate, and an inflation tube connected between the output end of the air pump and the connecting cavity. The mounting joint of each airbag unit is detachably mounted on the base plate and connected to the connecting cavity in the base plate through the second channel.

5. The anti-bedsore air mattress according to claim 4, characterized in that: The base plate is provided with plug-in holes corresponding to each of the mounting joints, the mounting joints are made of elastic rubber, the upper end of the mounting joint is provided with a connecting portion connected to the opening at the lower end of the airbag, the lower end of the mounting joint is provided with a plug-in portion plugged into the plug-in hole, and the periphery of the mounting joint is provided with a support plate supported on the base plate between the connecting portion and the plug-in portion.

6. The anti-bedsore air mattress according to claim 5, characterized in that: An annular groove is provided on the outer peripheral surface of the connecting portion, and an inner convex ring clamped in the annular groove is provided on the inner peripheral edge of the opening of the airbag.

7. The anti-bedsore air mattress according to claim 5, characterized in that: The outer peripheral edge of the lower end of the plug-in portion is provided with an outer convex ring which abuts against the lower end of the plug-in hole.

8. The anti-bedsore air mattress according to claim 4, characterized in that: The communicating cavity in the bottom plate is divided into a plurality of communicating cavity units by a partition plate, and the inflation pipe is respectively connected to each communicating cavity unit through a branch pipe, and each branch pipe is provided with a solenoid valve.

9. The anti-bedsore air mattress according to claim 8, characterized in that: It also includes a plurality of barometers, each of which is used to detect the air pressure in each of the connecting cavity units.

10. The anti-bedsore air mattress according to claim 1, characterized in that: It also includes a pressure monitoring pad, which is laid on the airbag unit and is provided with a plurality of pressure sensing sheets which are supported on the upper ends of the airbags of the airbag units in a one-to-one correspondence.

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