CN114983781B - Measuring method for real-time dynamic pressure monitoring during pressurization of pressure air sleeve - Google Patents
Measuring method for real-time dynamic pressure monitoring during pressurization of pressure air sleeve Download PDFInfo
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- CN114983781B CN114983781B CN202210926189.1A CN202210926189A CN114983781B CN 114983781 B CN114983781 B CN 114983781B CN 202210926189 A CN202210926189 A CN 202210926189A CN 114983781 B CN114983781 B CN 114983781B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H9/00—Pneumatic or hydraulic massage
- A61H9/005—Pneumatic massage
- A61H9/0078—Pneumatic massage with intermittent or alternately inflated bladders or cuffs
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
- A61H2201/50—Control means thereof
- A61H2201/5058—Sensors or detectors
- A61H2201/5071—Pressure sensors
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Abstract
The invention discloses a measuring method for monitoring real-time dynamic pressure during pressurization of a pressure air sleeve, which relates to the field of medical instruments and comprises a limb pressure pump and a limb pressure sleeve, wherein the limb pressure pump comprises an air pump, an electromagnetic valve and a main controller with a pressure sensor, and the limb pressure sleeve comprises an air bag, an air pipe and a quick connector; the measuring method comprises the following steps: s1, directly connecting a pressure sensor into an air pipe of an air bag by using a three-way joint, obtaining a pressure value by the pressure sensor every 20 milliseconds when an air pump pumps air, continuously obtaining five pressure values, then calculating an average value, taking the average value as a floating dynamic real-time pressure value, and fitting a real-time pressure curve of the pressure sensor; s2, subtracting a pressure difference value of the air pump from the real-time pressure value to obtain a real-time pressure value of the current air bag; and S3, controlling the air pump to pump air by using a main controller, wherein the main controller controls the air pump according to the monitored real-time pressure value.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a measuring method for monitoring real-time dynamic pressure when a pressure air sleeve is pressurized.
Background
As shown in fig. 5, the conventional pressure air bag used in the medical field is mainly used for verifying the real-time pressure of the air bag 2 by connecting a pressure instrument or a pressure sensor 5 to the bottom of the air bag 2 during pressurization; however, the method needs to open a hole at the bottom of the air bag 2, and the limb pressure sleeve belongs to a consumable product, so that the method can only be used for verification and cannot be used for monitoring the pressure of the limb pressure sleeve in real time. The scheme that is used for pressure real time monitoring at present is as follows, when air bag 2 connection air pump 1 during operation, when current medical field adopted pressure sensor 5 real time monitoring air bag 2's atmospheric pressure, mainly increases a little buffer cavity 7 and keeps apart pressure sensor 5 and intake duct 3, then is connected to pressure sensor 5 on buffer cavity 7 to huge impact atmospheric pressure when avoiding air pump 1 pump gas.
The above scheme has the following defects:
1. because the air pressure sensor 5 is directly connected with the bottom of the air bag 2, although the real-time pressure of the air bag 2 can be accurately measured, the scheme needs to open a hole at the bottom of the air sleeve 2, and cannot be applied to medical instruments in batches, mainly because the limb pressure air pump 1 is separated from the air bag 2, the scheme can only be applied to verification tests.
2. When the pressure sensor 5 is directly connected with the air inlet 3, the measured pressure value jumps up and down greatly due to the air pumping impact of the air pump 1, and the pressure of the air bag 2 cannot be monitored in real time, so that a buffer cavity 7 is added to avoid the huge impact air pressure when the air pump 1 pumps air, the product volume can be increased, the difficulty of the product structural design is increased, and the product cost is increased.
Disclosure of Invention
The invention provides a technical scheme capable of solving the problems in order to overcome the defects.
According to the invention, a real-time pressure curve is fitted through the average pressure value of the pressure sensor, and then the real-time pressure difference obtained through pre-verification is subtracted to calculate the pressure value of the connected air bag, so that the problem of large pressure value jumping caused by the fact that the pressure sensor is directly connected to the air inlet channel is solved.
In order to achieve the aim, the invention provides a measuring method for monitoring real-time dynamic pressure when a pressure air sleeve is pressurized, which consists of a limb pressure pump and the limb pressure sleeve, wherein the limb pressure pump comprises an air pump, an electromagnetic valve and a main controller with a pressure sensor;
the measuring method comprises the following steps:
the method comprises the following steps that S1, a pressure sensor is directly connected into an air pipe of an air bag through a tee joint, when an air pump pumps air, the pressure sensor obtains a pressure value every 20 milliseconds, an average value is calculated after five pressure values are continuously obtained, the average value serves as a floating dynamic real-time pressure value, and a real-time pressure curve of the pressure sensor is fitted;
s2, subtracting a pressure difference value of the air pump from the real-time pressure value to obtain a real-time pressure value of the current air bag;
and S3, controlling the air pump to pump air by using the main controller, and controlling the air pump by using the main controller according to the monitored real-time pressure value.
More preferably, the method comprises the following steps: the measuring method also comprises a step S4;
and S4, in the software debugging stage of the limb pressure pump, accessing the pressure gauge to the bottom of the air bag when testing the pressure value, recording the real-time pressure value of the pressure sensor every 1 second when the air pump pumps air, simultaneously recording the pressure value of the pressure gauge, and then recording the difference value between the pressure sensor and the pressure gauge, wherein the difference value is used for calibration verification.
More preferably: the main controller adopts a main control MCU, a main control memory is arranged on the main controller, a data storage area is arranged in the main control memory, and the data storage area is used for storing at least 5-bit test values and continuous 12-second check values.
More preferably: the pressure sensor measures the pressure value with a measuring speed reaching the millisecond level.
Compared with the prior art, the invention has the beneficial effects that:
1. the pressure sensor is directly connected into the air inlet channel, the pressure value of the pressure monitoring air bag can be directly measured, an isolation cavity is omitted, the size is reduced, and the equipment cost is reduced.
2. And subtracting the actual measurement pressure difference obtained in advance from the average pressure value of the pressure sensor to calculate the real-time pressure value of the connected air jacket.
3. The pressure monitoring is realized in a simpler and more convenient real-time manner, and the pressure value of the air sleeve is ensured to be within the set value range of the product while the cost is saved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the calibration verification of the present invention;
FIG. 3 is a graph of measured pressure differential according to the present invention;
FIG. 4 is a graph of the pressure values of the monitored pressure sensor of the present invention;
fig. 5 is a schematic diagram of a prior art pressure sensor for sensing real-time pressure of an airbag.
Shown in the figure: 1. an air pump; 2. an air bag; 3. an air tube; 4. a quick coupling; 5. a pressure sensor; 6. a pressure gauge; 7. a buffer cavity.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1-4, the measuring method for real-time dynamic pressure monitoring during pressurization of a pressure air jacket of the present invention comprises a limb pressure pump and a limb pressure jacket, wherein the limb pressure pump comprises an air pump 1, an electromagnetic valve and a main controller with a pressure sensor 5, the limb pressure jacket comprises an air bag 2, an air pipe 3 and a quick connector 4, the air pump 1 is connected with the air pipe 3 through the electromagnetic valve, the main controller with the pressure sensor 5 is connected with the air pipe 3, and the quick connector 4 is connected between the air pump 1 and the air bag 2 through the air pipe 3;
the measuring method comprises the following steps:
s1, directly connecting a pressure sensor 5 into an air pipe 3 of an air bag 2 by using a tee joint, when the air pump 1 pumps air, obtaining a pressure value by the pressure sensor 5 every 20 milliseconds, continuously obtaining five pressure values, then calculating an average value, taking the average value as a floating dynamic real-time pressure value, and fitting a real-time pressure curve of the pressure sensor 5;
s2, subtracting the pressure difference of the air pump 1 from the real-time pressure value to obtain the real-time pressure value of the current air bag 2;
and S3, controlling the air pump 1 to pump air by using the main controller, and controlling the air pump 1 by using the main controller according to the monitored real-time pressure value.
Preferably: the measuring method also comprises a step S4;
and S4, in the software debugging stage of the limb pressure pump, when the pressure value is tested, the pressure gauge 6 is connected to the bottom of the air bag 2, when the air pump 1 pumps air, the real-time pressure value of the pressure sensor 5 is recorded every 1 second, the pressure value of the pressure gauge 6 is recorded at the same time, then the difference value between the lower pressure sensor 5 and the pressure gauge 6 is recorded, and the difference value is used for calibration verification.
Preferably, the following components: the main controller adopts a main control MCU, a main control memory is arranged on the main controller, a data storage area is arranged in the main control memory, and the data storage area is used for storing at least 5-bit test values and continuous 12-second check values; step S4, the difference between the pressure sensor 5 and the pressure gauge 6 is stored in a data storage area, which is convenient for use in calculating the pressure value.
Preferably, the following components: the pressure sensor 5 measures the pressure value at a measurement speed of the order of milliseconds.
The first embodiment is as follows: a measuring method for monitoring real-time dynamic pressure during pressurization of a pressure air sleeve comprises the steps of directly connecting a pressure sensor 5 to an air pipe 3 of an air bag 2, then when a main controller controls an air pump 1 to pump air, obtaining the pressure value of the pressure sensor 5 every 20 milliseconds, calculating an average value every 5 times to serve as a current pressure value, obtaining a dynamic total pressure value of a time point through the average value of pressure values sampled for 5 times in the last succession, and then subtracting a pressure difference value of the air pump 1 during pumping air to serve as a real-time pressure value of the air bag 2.
In the specific implementation, as mentioned above, the air pump 1 starts to pressurize, the air flows through the tube wall in the air tube 3 and enters the air bag 2, the pressure sensor 5 reads the air pressure value, measures the air pressure of the air bag 2, and if the air pressure does not reach the set value, the air pump 1 continues to operate and pressurize.
The measuring method of the invention specifically comprises the following steps:
1. air pump 1 and pressure sensor 5 all place in main control unit, then air pocket 2 links to each other with air pump 1 through quick-operation joint 4, and main control unit controls air pump 1 operation according to the pressure value that pressure sensor 5 monitored, guarantees that the pressure value of air pocket 2 is in suitable within range.
2. After the first pressure value of the pressure sensor 5 is obtained, 20 milliseconds are needed to be separated, and then the second pressure value is obtained, so that when 5 pressure values are obtained after 20 milliseconds are separated, the 6 th pressure value is obtained after the next 20 milliseconds, the first pressure value is removed, the average value of the latest continuous 5 pressure values is calculated, and a curve graph of the floating dynamic real-time pressure value is obtained;
when the device is specifically implemented, the air bag 2 is fixed on the limb of a patient, venous thrombosis is prevented by pressurizing and depressurizing the air bag 2, a main control memory can be arranged on a main controller, a data storage area is arranged on the main control memory, at least 5 test values can be stored, and it needs to be particularly pointed out that the measurement speed needs to reach the level of millisecond, because the change of the air pressure of the air needs to be monitored and reacted in time, the injury to the patient caused by overhigh pressure is prevented, and meanwhile, the situation that the treatment effect cannot be achieved due to overlow pressure is avoided.
3. When 2 trachea 3 for air pocket 3 pressure sensor 5 test pressure value, with the bottom of pressure gauge 6 access air pocket 2, when air pump 1 carried out the pump gas, every 1 second recorded pressure sensor 5's real-time pressure value, recorded the pressure value of 2 bottom pressure gauges 6 of air pocket simultaneously, then noted the difference, this difference measurement only does the calibration verification.
In the implementation, a special data storage area needs to be opened up in the main control memory, and the pressure difference value per second of at least 10 seconds can be stored, so that the main control unit can directly call the data, calculate the real-time pressure of the air bag 2, and control whether the air pump 1 continues to pump air according to the pressure value.
In this embodiment, it can be seen that the real-time pressure value of the air bag 2 can be obtained by obtaining the pressure value of the pressure sensor 5 and then subtracting the absolute pressure difference value of the air pipe 3 during air pumping; it should be noted that the absolute pressure value of the air pump 1 for pumping the air to the air pipe 3 is measured in advance, and the measured absolute pressure value is stored in the data storage area of the main control memory as a data constant area according to the change value per second, so as to facilitate the calling of the main control when in operation.
In addition, the present embodiment is not intended to limit the shape, material, structure, etc. of the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention are within the protection scope of the technical solution of the present invention.
Claims (3)
1. The utility model provides a measuring method of real-time dynamic pressure monitoring when pressurizing pressure gas jacket, is applied to medical instrument thrombus therapeutic instrument, includes medical instrument thrombus prevention system, its characterized in that: the medical apparatus and instrument thrombus-preventing system consists of a limb pressure pump and a limb pressure sleeve, wherein the limb pressure pump comprises an air pump, an electromagnetic valve and a main controller with a pressure sensor, the limb pressure sleeve consists of an air bag, an air pipe and a quick connector, the air pump is connected with the air pipe through the electromagnetic valve, the main controller with the pressure sensor is connected to the air pipe, and the quick connector is connected between the air pump and the air bag through the air pipe;
the measuring method comprises the following steps:
the method comprises the following steps that S1, a pressure sensor is directly connected into an air pipe of an air bag through a tee joint, when an air pump pumps air, the pressure sensor obtains a pressure value every 20 milliseconds, an average value is calculated after five pressure values are continuously obtained, the average value serves as a floating dynamic real-time pressure value, and a real-time pressure curve of the pressure sensor is fitted;
s2, subtracting a pressure difference value of the air pump from the real-time pressure value to obtain a real-time pressure value of the current air bag;
s3, controlling an air pump to pump air by using a main controller, controlling the air pump by using the main controller according to the monitored real-time pressure value, fixing an air bag on the limb of the patient, and preventing venous thrombosis by pressurizing and depressurizing the air bag to realize the thrombus treatment of the limb of the patient;
and S4, in the software debugging stage of the limb pressure pump, accessing the pressure gauge to the bottom of the air bag when testing the pressure value, recording the real-time pressure value of the pressure sensor every 1 second when the air pump pumps air, simultaneously recording the pressure value of the pressure gauge, and then recording the difference value between the pressure sensor and the pressure gauge, wherein the difference value is used for calibration verification.
2. A method for measuring real-time dynamic pressure monitoring during pressurization of a pressure gas jacket according to claim 1, wherein: the main controller adopts a main control MCU, a main control memory is arranged on the main controller, a data storage area is arranged in the main control memory, and the data storage area is used for storing at least 5-bit test values and continuous 12-second check values.
3. The method of claim 1, wherein the pressure monitoring is performed in real time during pressurization of the pressure cuff, and wherein the method comprises the steps of: the pressure sensor measures the pressure value with a measuring speed reaching the millisecond level.
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| CN202210926189.1A CN114983781B (en) | 2022-08-03 | 2022-08-03 | Measuring method for real-time dynamic pressure monitoring during pressurization of pressure air sleeve |
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| CN202210926189.1A CN114983781B (en) | 2022-08-03 | 2022-08-03 | Measuring method for real-time dynamic pressure monitoring during pressurization of pressure air sleeve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201216462D0 (en) * | 2012-09-14 | 2012-10-31 | Vapourtec Ltd | Pump |
| WO2016190148A1 (en) * | 2015-05-27 | 2016-12-01 | 株式会社村田製作所 | Cuff pressure control device, cuffed tracheal tube, and artificial respirator |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US6159160A (en) * | 1998-03-26 | 2000-12-12 | Ethicon, Inc. | System and method for controlled infusion and pressure monitoring |
| CN107693322A (en) * | 2017-07-28 | 2018-02-16 | 广东泰宝医疗科技股份有限公司 | A kind of intermittent air pressure treatment system with blood backflow detection function |
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