CN2368533Y

CN2368533Y - Automatic instrument for gastrolavage

Info

Publication number: CN2368533Y
Application number: CN 99208523
Authority: CN
Inventors: 李平霞
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-04-26
Filing date: 1999-04-26
Publication date: 2000-03-15
Anticipated expiration: 2009-04-26

Abstract

The utility model relates to a machine for gastrolavage, which is controlled by a computer. The utility model uses a pressure sensor to measure liquid-injecting pressure and liquid-pumping pressure of the machine for gastrolavage to be compared with the setting pressure by the computer to control the liquid-injecting pressure and the liquid-pumping pressure of the machine for gastrolavage. A liquid level sensor is installed in a liquid-storing tank to be used for checking washing liquid and liquid quantity which is pumped out, and irrigation quantity can be controlled by the computer. A valve which can be used for one time is installed on a pipeline which is connected with a stomach tube to thoroughly solve the problem of cross infection.

Description

Automatic gastrolavage machine

The present invention relates to a kind of medical apparatus and instruments, particularly a kind of computer-controlled paunch flusher.In the present known paunch flusher, working pressure control automatic reverse is a kind of paunch flusher easy to use simple in structure.But this paunch flusher also has the following deficiency:

This paunch flusher uses constant voltage control, can not carry out the pressure adjustment.When the patient who begins to go into a coma to having a delicate constitution carries out gastric lavage, because pressure is excessive, easily poisonous substance is squeezed into intestinal, quicken patient and poison.When carrying out gastric lavage, patient strong to body constitution and that produced the tic spasm can can't clean owing to hypotony can not be injected cleanout fluid in patient's stomach again.In addition, existing various paunch flushers are because the problem of structure itself all can not thoroughly solve the problem of cross infection.

Task of the present invention provides a kind of computer-controlled paunch flusher, uses a pressure transducer, measures the fluid injection of paunch flusher and the pressure of drawing liquid, and computer is by comparing the fluid injection and the drawing liquid pressure of control paunch flusher with setting pressure.Liquid level sensor is installed in fluid reservoir,, can controls flushing dose by computer in order to detect the liquid measure of cleaning mixture and extraction.On the pipeline that connects stomach tube, a disposable valve is installed, can thoroughly solves the problem of cross infection.

Task of the present invention is finished with following mode: add a pressure transducer and two liquid level sensors in system, circuit amplifies the measuring-signal of pick off, conversion, deliver to computer system, computer carries out various operations to paunch flusher by setup program according to gaging pressure and liquid level.The exit that connects stomach tube at paunch flusher is equipped with a disposable change-over valve, and computer is finished gastric lavage work by the commutation of reversing motor by-pass valve control.

The present invention is further described below in conjunction with drawings and Examples.

Fig. 1 is the fundamental diagram of paunch flusher.

Fig. 2 is the structure chart of reversal valve.

Fig. 3 is the sketch map of liquid level sensor.

1. pumps among Fig. 1,2. electromagnetic valve, 3. pressure transducer, 4. liquid level sensor, 5. electromagnetic valve, 6. soiling solution jar, 7. liquid level sensor, 8. check valve, 9. electromagnetic valve, 10. reversal valve, 11. electromagnetic valves, 12. washing liquid tanks.13. check valve.

Fig. 1 has represented the operation principle of paunch flusher, and paunch flusher is by air-channel system, and liquid-way system and two fluid reservoirs are formed.Pump (1), two electromagnetic valves (2) (5), pressure transducer (3), two liquid sensors (4) are formed air-channel system.Two check valves (8) (13), two electromagnetic valves (9) (11), a disposable reversal valve of motor-driven (10) is formed liquid-way system.Two systems link to each other with washing liquid tank (12) by soiling solution jar (6), drive liquid flow by gas pressure and finish gastric lavage work.Work process is such: reversal valve was parked in the position that stomach tube and soiling solution jar communicate when gastric lavage began, primer pump (1) begins to bleed, and opens electromagnetic valve (2) (5) simultaneously, closes electromagnetic valve (9) (11), gastric juice is pumped to the soiling solution jar, and cleaning mixture is pumped to washing liquid tank.When cleaning mixture is charged to set amount, close electromagnetic valve (2) and continue to extract gastric juice out, when arriving certain pressure or gastric juice be full of the soiling solution jar, when perhaps operator pressed wash switch, pump (1) was shut down, reversal valve (10) commutation.Pump (1) counter-rotating begins to calm the anger then, opens electromagnetic valve (2) (5) (11) simultaneously, on one side the cleaning mixture in the washing liquid tank (12) is pressed in the stomach, on one side gastric juice is discharged from soiling solution jar (6).Computer changes by the liquid level of two fluid reservoirs of liquid level sensor (7) monitoring; that fluid reservoir is drained that closed electromagnetic valve that links to each other with fluid reservoir; when two jars all are drained; pump (1) is shut down; the reversal valve commutation; begin continuous circulation from the first step again, up to finishing gastric lavage work.In the gastric lavage process,, can not close and when leaking gas, computer can judge by parameters such as pressure and liquid levels if check valve (8) is stopped up by dirt.Computer can cut out electromagnetic valve (5) (11) automatically, and what electromagnetic valve (9) was opened directly is driven into the soiling solution jar from washing liquid tank with cleaning mixture, and flushing check valve (8).The effect of pressure transducer (3) is to provide a positive/negative pressure signal to computer, makes computer change turning to of pump when pressure surpasses setting value, to prevent malpractice according to this signal monitoring gastric lavage process.

1. fixed interfaces among Fig. 2,2. nut, 3. valve seat, 4. guiding valve, 5. motor, 6 eccentric shafts, 7. slide block, 8. guide rail.

Fig. 2 has represented the structure of reversal valve, on guide rail (8), motor (5) and fixed interface (1) is installed.Two outlets are inserted on the fixed interface (1) about valve seat (3), seal by sealing ring (2).The outlet on fixed interface (1) left side links to each other with the soiling solution jar, and the outlet on the right links to each other with washing liquid tank, and intermediary outlet connects stomach tube.Guiding valve (4) is installed in the valve seat (3), and an end is enclosed within on the bearing pin of slide block (7).An eccentric shaft (6) is installed on the shaft of motor (5), drive slide block (7) by the bearing pin on the eccentric shaft (6) during motor (5) work, bearing pin on the slide block (7) drives guiding valve (4) and moves back and forth in valve seat, and outlet is rotated and intermediary outlet conducting about making.Because valve seat (3) and guiding valve (4) are disposable uses, so can avoid the generation of cross infection fully.

1. tank shells among Fig. 3,2. Hall effect transducer, 3. Magnet, 4. float, 5. sleeve pipe, 6. spring.

Fig. 3 has shown the structure of liquid level sensor.Sleeve pipe (5) in clamping between housing (1), is adorning spring (6), float (4) and Magnet (3) in the sleeve pipe (5).Spring (6) is supporting the part weight of float (4), makes the position and the liquid position proportion relation of float (4).When in the storage tank during no liquid float (4) drop on tank bottom, float when liquid is full of storage tank (4) reaches the extreme higher position.The drive Magnet (3) that moves up and down of float (4) moves, and the change of Magnet (3) position changes the magnetic flux by Hall effect transducer (2), and the size of this magnetic flux has reflected the liquid level in the storage tank.Hall effect transducer (2) is delivered to amplifying circuit with the signal of telecommunication and is amplified, and handles the operation of control paunch flusher through delivering to computer after the A/D conversion.If float (4) uses polythene material, and Magnet (3) is sealed in wherein, liquid level sensor just can use in corrosive environment and use.

Claims

1. computer-controlled paunch flusher, it is characterized in that: by pump, electromagnetic valve, pressure transducer, liquid level sensor, check valve and a motor-driven disposable reversal valve are formed, and circuit is with pressure transducer, and the measuring-signal of liquid level sensor amplifies, conversion, deliver to computer system, computer carries out various operations to paunch flusher by setup program according to pressure and the liquid level measured.

2. paunch flusher according to claim 1 is characterized in that: by valve seat, and guiding valve, motor, slide block, the property reversal valve that eccentric shaft and frame are formed.

3. paunch flusher according to claim 1 is characterized in that: valve seat has three outlets, and an end of guiding valve has two sealing rings, one end has a bar, the shaft hole sleeve of bar when motor moves to two ends by slide block drive guiding valve in valve seat, makes two outlet conductings respectively on the bearing pin of slide block.

4. paunch flusher according to claim 1 is characterized in that: by spring, and float, the liquid level sensor that Magnet and Hall effect transducer are formed, spring support section float weight makes the variation of position of float and the height proportion relation of liquid position.

5. paunch flusher according to claim 1 is characterized in that: Magnet is installed on the float, and Hall effect transducer is installed in outside the container, can be used for Korrosionsmedium.