CN2249594Y

CN2249594Y - Automatic controlling aerated mattress

Info

Publication number: CN2249594Y
Application number: CN 96234334
Authority: CN
Inventors: 张忻; 尚勇; 范炳琪
Original assignee: WUCHANG HOSPITAL WUHAN RAILWAY SUB-BUREAU; WUHAN CITY RADIO INST
Current assignee: WUCHANG HOSPITAL WUHAN RAILWAY SUB-BUREAU; WUHAN CITY RADIO INST
Priority date: 1996-02-15
Filing date: 1996-02-15
Publication date: 1997-03-19
Anticipated expiration: 2006-02-15

Abstract

The utility model relates to a mattress for bedridden patients, which comprises an air cushion which is composed of parallel arranged air chambers; the air chambers are connected with an air pump by an air pipeline. The utility model has the difference that the air pipeline is provided with a three-way electromagnetic valve; pressure sensors are arranged in the air chambers; the output end of the pressure sensor is input into a single chip computer after passing through an amplifier and an A/D switching circuit; the output end of the single chip computer is connected with the electromagnetic valve and the control end of an air pump motor. The utility model makes the air chambers inflate and deflate regularly, reduces the workload of nursing, and accurately controls air pressure to reach an ideal nursing effect. The utility model can be directly used in the existing hospital beds.

Description

Automatically control air matting

This utility model relates to a kind of medical treatment and nursing device, the mattress that particularly a kind of patient who does not rise for long-term bed is suitable for.

Need the patient of long-term bed for hemiplegia, apoplexy, cerebral operations, cardiovascular disease etc., because health touches the long-term pressurized of part with bench grafting, thrombosis causes that this place organizes the generation pathological changes, thus the generation decubital ulcer, and then fester.Have some can improve the sanguimotor mattress of patient's part in compression at present, but all need manual operation, because it is frequent to charge and discharge pneumatic work, nursing staff's workload is big, and the manual adjustments precision is not high, and nursing efficacy is undesirable.

The purpose of this utility model provides the sanguimotor air matting in a kind of bed patient's of improvement pressurized position, realizes charging and discharging automatically the gas operation, and can accurately control air pressure, reaches ideal nursing efficacy.

This utility model comprises the air cushion that is made of the air chamber that is arranged in parallel, air chamber is linked by air pipe line and air pump, difference is to be provided with three-way magnetic valve in this air pipe line, be provided with pressure transducer in the air chamber, the pressure transducer outfan is imported single-chip microcomputer after by amplifier and A/D change-over circuit, this single-chip microcomputer output termination electromagnetic valve and air pump motor control end.

Single-chip microcomputer of the present utility model is according to the information and the predefined data of investigating from pressure transducer, by delivery outlet control air pump motor and electromagnetic valve, make air chamber clocklike charge and discharge gas, reduced nursing work load, and can accurately control air pressure, reach ideal nursing efficacy.This utility model can be directly used on the operating beds, promotes easily.

Fig. 1 is this utility model structural representation.

Fig. 2 is this utility model control circuit structure chart.

Fig. 3, Fig. 4, Fig. 5 are the circuit diagram of control circuit.

Fig. 6 is a software flow pattern.

As shown in Figures 1 and 2, the air chamber 1 that is arranged in parallel constitutes air cushion, and air chamber links by air pipe line 3 and air pump 6.2,4 for being arranged at the electromagnetic valve in the air pipe line, and wherein 4 is the electromagnetic valve main valve, 2 electromagnetic valves for the single air chamber of control, and 5 for being located at the pressure transducer in the air chamber.Pressure transducer links with single-chip microcomputer 9 by amplifier 7 and A/D converter 8, and the single-chip microcomputer outfan is pressed electromagnetic valve and Electric Machine Control end 10.

CPV8031, EPROM2764, input/output interface 8255 constitute single-chip microcomputer among Fig. 3, Fig. 4, Fig. 5, and A/D converter adopts ADC0809, and F is an electromagnetic valve, and M is a motor.After the start, if air cushion is made of 6 air chamber Q1-Q6, the electromagnetic valve of controlling single air chamber is F1-F6, main valve F0.Single-chip microcomputer 8031 is carried out initialize routines, if working method is set to single preface, the time is decided to be 5 minutes, the air pressure threshold values can according to patient body weight be made as soft, in, hard three kinds.After the setting F1 is closed, F2, F6 are open-minded, PC3, PC4 are changed to high level, promptly drive main valve, open motor M, at this moment, motor is inflated air cushion, and air chamber Q1 can not inflate because F1 closes, and Q2-Q6 is charged into gas, in the time of inflation, 8031 constantly sample to air cushion pressure by pick off, compare with predetermined threshold values, if then continue inflation less than threshold values, if equate then to close F0, close M, start delay procedure, in the time-delay process, still air cushion pressure is sampled, to keep constant voltage to the preset time of delaying time.Open F0, M subsequently, close F2, open F1, F2-F6, Q1 is charged into gas, Q2 exits owing to F2 closes, and Q3-Q6 is constant, and this process circulation is later on carried out, if the blowing pressure is higher than threshold value, then F0-F6 closes, and M is cut off, and gas is exitted by F1-F6 in the air cushion.Through behind the suitable time-delay, open F0, M again, and recover the duty before the venting.For two preface controls, work process is the same, just closes two electromagnetic valves simultaneously, as closing F1, F2, opens F3-F6, and then is transformed into pass F3, F4, opens F1, F2, F5, F6.For a preface control, work process is the same, just opens 3 valves simultaneously, as opens F1, F3, F5, closes F2, F4, F6, and then changes to out F2, F4, F6, closes F1, F3, F5.

Claims

1, a kind of automatic control air matting, comprise the air cushion that constitutes by the air chamber that is arranged in parallel, air chamber is linked by air pipe line and air pump, it is characterized in that being provided with three-way magnetic valve in this air pipe line, be provided with pressure transducer in the air chamber, the pressure transducer outfan is imported single-chip microcomputer after by amplifier and A/D change-over circuit, this single-chip microcomputer output termination electromagnetic valve and air pump motor control end.