CN101385887A - Intelligent low constant pressure wound drainage system - Google Patents
Intelligent low constant pressure wound drainage system Download PDFInfo
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- CN101385887A CN101385887A CNA200810152381XA CN200810152381A CN101385887A CN 101385887 A CN101385887 A CN 101385887A CN A200810152381X A CNA200810152381X A CN A200810152381XA CN 200810152381 A CN200810152381 A CN 200810152381A CN 101385887 A CN101385887 A CN 101385887A
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- wound drainage
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Abstract
The invention discloses a smart low constant-pressure wound drainage system, which aims at providing a wound drainage system which can detect the actual negative pressure value and control a negative pressure pump to adjust the pressure during the drainage, so as to realize a scientific drainage treatment and reduce the labor intensity of the nursing staff. A pressure sensor is connected with a liquid tank; the pressure sensor is also connected with a control signal input terminal of a main drainage controller by an A/D converter; the control signal output terminal of the main drainage controller is connected with that of an AC voltage regulator by a D/A converter; the control signal output terminal of the AC voltage regulator is connected with a negative pressure pump which is connected with the liquid tank, and the main drainage controller is connected with a data inputting device. The smart low constant-pressure wound drainage system can detect the actual negative pressure value in the liquid tank and control the negative pressure pump to adjust the pressure during the drainage, thus realizing pressure monitoring and precise control; furthermore, the system has excellent performance of voltage regulation and simple operation and reduces the labor intensity of the nursing staff.
Description
Technical field
The present invention relates to a kind of intelligent low constant pressure wound drainage system.
Background technology
The low constant pressure wound drainage device is a kind of cooperation drain pipeline, attracts the equipment in source for drain behind the medical operating provides constant lower negative pressure.This device adopts single chip computer automatic control system, sets required lower negative pressure numerical value according to actual needs arbitrarily, realizes regulating automatically, and the precision height is avoided damage and infection to wound, accelerating wound.At present, the device of wound drainage use mainly contains three kinds: disposable negative pressure drainage vessel (jar), wall negative pressure, traditional vacuum extractor.All there are problems such as negative pressure is excessive, the adjusting precision is poor, nursing staff's labor intensity is big, noise is excessive in these devices, but maximum problem is, owing to have gap between default value and the actual suction pressure value, and there is not the actual measurement device of negative pressure value in the drainage system, therefore, medical personnel are difficult to the real negative pressure value of understanding drainage system, can not provide objective data for rational drainage treatment, influence therapeutic effect.
Summary of the invention
The present invention is in order to overcome weak point of the prior art, providing a kind of can detect the actual suction pressure value in the drain process, and control negative pressure pump and carry out the pressure adjusting, realize the science drainage treatment, alleviate the intelligent low constant pressure wound drainage system of nursing staff's labor intensity.
The present invention is achieved through the following technical solutions:
A kind of intelligent low constant pressure wound drainage system, it is characterized in that, comprise the drain master controller, pressure transducer, negative pressure pump, AC voltage regulator, described pressure transducer is connected with reservoir, described pressure transducer is connected by the signal input part of A/D converter with the drain master controller, the control signal output ends of described drain master controller is connected with the control signal input of AC voltage regulator by D/A converter, the control signal output ends of described AC voltage regulator is connected with negative pressure pump, described negative pressure pump is connected with reservoir, and described drain master controller is connected with data input device.Described data input device is preferably keyboard.
Constant-current source, pressure transducer, amplifier, follower connect to form the pressure measurement circuit successively, and the signal output part of follower is connected by the signal input part of described A/D converter with the drain master controller.The two ends of described pressure transducer are connected in parallel to adjustable divider resistance.Described adjustable divider resistance can be connected to form by potentiometer and resistance series connection.
Described drain master controller is connected with circuit of display driving, and described circuit of display driving is connected with observed pressure value display with the pressure set points display respectively.Pressure set points display and observed pressure value display are respectively liquid crystal display.
The present invention has following technique effect:
1. intelligent low constant pressure wound drainage system of the present invention can detect the actual suction pressure value in the reservoir in the drain process; and the control negative pressure pump carries out the pressure adjusting; pressure monitoring and accurately control have been realized; system can adjust to pressure setting value automatically and go up and keep it stable, and when force value superelevation unexpectedly occurs or when ultralow, system can in time shut down or QI invigorating automatically; realization science drainage treatment; simultaneously, simple to operate, alleviated nursing staff's labor intensity.
2. be connected with follower in the pressure measurement circuit in the intelligent low constant pressure wound drainage system of the present invention, follower can play buffer action, avoids the signal in the circuit of back the front circuit to be exerted an influence the voltage regulation performance excellence.
3. the potentiometer by being connected in parallel on the pressure transducer two ends and the adjusting of related resistors in the pressure measurement circuit of intelligent low constant pressure wound drainage system of the present invention can be carried out the calibration of pressure transducer biasing, to improve control accuracy.
Description of drawings
Fig. 1 is intelligent low constant pressure wound drainage system circuit theory diagrams of the present invention;
Fig. 2 is the pressure measurement circuit theory diagrams.
The specific embodiment
Below in conjunction with the drawings and specific embodiments to the detailed description of the invention.
The circuit theory diagrams of intelligent low constant pressure wound drainage system of the present invention comprise drain master controller, pressure transducer, negative pressure pump, AC voltage regulator as shown in Figure 1.Described pressure transducer is connected with reservoir, is used to detect the pressure in the reservoir.Described pressure transducer is connected by the signal input part of A/D converter with the drain master controller, the control signal output ends of described drain master controller is connected with the control signal input of AC voltage regulator by D/A converter, the control signal output ends of described AC voltage regulator is connected with negative pressure pump, described negative pressure pump is connected with reservoir, is used for the adjustment to the reservoir internal pressure.Described drain master controller is connected with data input device, by the clinical negative pressure value that needs setting of data input device input.Data input device can be adopted keyboard.Lower negative pressure wound drainage system of the present invention is realized, constant negative pressure drain automatic continuous to wound by the control of drain master controller.At first, in the memorizer of drain master controller, store according to expertise and set up output controlled quentity controlled variable question blank, directly inquire about this table, just can draw the controlled quentity controlled variable of output according to the pressure divergence value after quantizing.By the clinical negative pressure value set of needing of data input device input, the instant pressure value that the drain master controller collects according to pressure transducer makes system pressure reach setting value, and keeps constant by the duty of AC voltage regulator control negative pressure pump.When system pressure was lower than setting value, the drain master controller made negative pressure pump begin acceleration work by the output of control AC voltage regulator, makes system pressure reach setting value.When system pressure was higher than setting value, the drain master controller quit work negative pressure pump by the output of control AC voltage regulator, makes system pressure reduce to setting value.When system pressure reached setting value, the drain master controller made the negative pressure pump continuous firing by the output of control AC voltage regulator, remains on setting value to keep system pressure.
In order to improve the stability of system, constant-current source, pressure transducer, amplifier, follower connect to form the pressure measurement circuit successively, replace single pressure transducer.The signal output part of follower is connected by the signal input part of described A/D converter with the drain master controller.The detected data of pressure transducer are delivered to the drain master controller by A/D converter again through after amplification and isolating, and can avoid the signal in the circuit of back that the front circuit is exerted an influence.
In order to improve precision, the two ends of described pressure transducer are connected in parallel to adjustable divider resistance.Described adjustable divider resistance can be connected to form by potentiometer and resistance series connection, by the adjusting of potentiometer and related resistors, carries out the calibration of pressure transducer biasing, to improve control accuracy.
Nursing for convenience, described drain master controller is connected with circuit of display driving, and described circuit of display driving is connected with observed pressure value display with the pressure set points display respectively.Wherein, pressure set points display and observed pressure value display are respectively liquid crystal display.
Intelligent low constant pressure wound drainage system of the present invention becomes a reality the drainage treatment of science.It is required that this system can also be used for the accurate lower negative pressure value of gastrointestinal decompression of clinical patient simultaneously.
Although relate to a kind of intelligent low constant pressure wound drainage system and carried out special description disclosed with reference to embodiment, embodiment described above is illustrative and not restrictive, under the situation that does not break away from the spirit and scope of the present invention, all variations and modification are all within the scope of the present invention.
Claims (7)
1, a kind of intelligent low constant pressure wound drainage system, it is characterized in that, comprise the drain master controller, pressure transducer, negative pressure pump, AC voltage regulator, described pressure transducer is connected with reservoir, described pressure transducer is connected by the signal input part of A/D converter with the drain master controller, the control signal output ends of described drain master controller is connected with the control signal input of AC voltage regulator by D/A converter, the control signal output ends of described AC voltage regulator is connected with negative pressure pump, described negative pressure pump is connected with reservoir, and described drain master controller is connected with data input device.
2, intelligent low constant pressure wound drainage system according to claim 1, it is characterized in that, constant-current source, pressure transducer, amplifier, follower connect to form the pressure measurement circuit successively, and the signal output part of follower is connected by the signal input part of described A/D converter with the drain master controller.
3, intelligent low constant pressure wound drainage system according to claim 2 is characterized in that, the two ends of described pressure transducer are connected in parallel to adjustable divider resistance.
4, intelligent low constant pressure wound drainage system according to claim 3 is characterized in that, described adjustable divider resistance is connected to form by potentiometer and resistance series connection.
5, intelligent low constant pressure wound drainage system according to claim 1 is characterized in that, described drain master controller is connected with circuit of display driving, and described circuit of display driving is connected with observed pressure value display with the pressure set points display respectively.
6, intelligent low constant pressure wound drainage system according to claim 5 is characterized in that, pressure set points display and observed pressure value display are respectively liquid crystal display.
7, intelligent low constant pressure wound drainage system according to claim 1 is characterized in that, described data input device is a keyboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810152381XA CN101385887A (en) | 2008-10-17 | 2008-10-17 | Intelligent low constant pressure wound drainage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810152381XA CN101385887A (en) | 2008-10-17 | 2008-10-17 | Intelligent low constant pressure wound drainage system |
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| CN101385887A true CN101385887A (en) | 2009-03-18 |
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| CNA200810152381XA Pending CN101385887A (en) | 2008-10-17 | 2008-10-17 | Intelligent low constant pressure wound drainage system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103221077A (en) * | 2010-09-20 | 2013-07-24 | 史密夫及内修公开有限公司 | Pressure control apparatus |
| CN106975110A (en) * | 2017-04-07 | 2017-07-25 | 振德医疗用品股份有限公司 | A kind of negative pressure drainage device and method based on PID control |
| US9808561B2 (en) | 2010-04-27 | 2017-11-07 | Smith & Nephew Plc | Wound dressing and method of use |
| US9987402B2 (en) | 2007-12-06 | 2018-06-05 | Smith & Nephew Plc | Apparatus and method for wound volume measurement |
| US11253639B2 (en) | 2011-11-02 | 2022-02-22 | Smith & Nephew Plc | Reduced pressure therapy apparatuses and methods of using same |
-
2008
- 2008-10-17 CN CNA200810152381XA patent/CN101385887A/en active Pending
Cited By (18)
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|---|---|---|---|---|
| US9987402B2 (en) | 2007-12-06 | 2018-06-05 | Smith & Nephew Plc | Apparatus and method for wound volume measurement |
| US12029549B2 (en) | 2007-12-06 | 2024-07-09 | Smith & Nephew Plc | Apparatus and method for wound volume measurement |
| US10159604B2 (en) | 2010-04-27 | 2018-12-25 | Smith & Nephew Plc | Wound dressing and method of use |
| US11058587B2 (en) | 2010-04-27 | 2021-07-13 | Smith & Nephew Plc | Wound dressing and method of use |
| US9808561B2 (en) | 2010-04-27 | 2017-11-07 | Smith & Nephew Plc | Wound dressing and method of use |
| US11090195B2 (en) | 2010-04-27 | 2021-08-17 | Smith & Nephew Plc | Wound dressing and method of use |
| US10058644B2 (en) | 2010-09-20 | 2018-08-28 | Smith & Nephew Plc | Pressure control apparatus |
| US10105473B2 (en) | 2010-09-20 | 2018-10-23 | Smith & Nephew Plc | Pressure control apparatus |
| CN103221077A (en) * | 2010-09-20 | 2013-07-24 | 史密夫及内修公开有限公司 | Pressure control apparatus |
| US10307517B2 (en) | 2010-09-20 | 2019-06-04 | Smith & Nephew Plc | Systems and methods for controlling operation of a reduced pressure therapy system |
| US11027051B2 (en) | 2010-09-20 | 2021-06-08 | Smith & Nephew Plc | Pressure control apparatus |
| CN103221077B (en) * | 2010-09-20 | 2017-04-05 | 史密夫及内修公开有限公司 | Pressure control equipment |
| US11534540B2 (en) | 2010-09-20 | 2022-12-27 | Smith & Nephew Plc | Pressure control apparatus |
| US11623039B2 (en) | 2010-09-20 | 2023-04-11 | Smith & Nephew Plc | Systems and methods for controlling operation of a reduced pressure therapy system |
| US9220823B2 (en) | 2010-09-20 | 2015-12-29 | Smith & Nephew Plc | Pressure control apparatus |
| US11253639B2 (en) | 2011-11-02 | 2022-02-22 | Smith & Nephew Plc | Reduced pressure therapy apparatuses and methods of using same |
| US11648342B2 (en) | 2011-11-02 | 2023-05-16 | Smith & Nephew Plc | Reduced pressure therapy apparatuses and methods of using same |
| CN106975110A (en) * | 2017-04-07 | 2017-07-25 | 振德医疗用品股份有限公司 | A kind of negative pressure drainage device and method based on PID control |
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Open date: 20090318 |