CN105078430A - Pulse wave blood pressure simulator and simulating method - Google Patents
Pulse wave blood pressure simulator and simulating method Download PDFInfo
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- CN105078430A CN105078430A CN201410197019.XA CN201410197019A CN105078430A CN 105078430 A CN105078430 A CN 105078430A CN 201410197019 A CN201410197019 A CN 201410197019A CN 105078430 A CN105078430 A CN 105078430A
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Abstract
The invention belongs to the technical field of medical instruments and provides a pulse wave blood pressure simulator which comprises a blood pressure simulating device, a pressure sensor, a pulse wave simulating device and a controller. The blood pressure simulating device is used for simulating human pressure signals and comprises a flexible rubber hose filled with gas and capable of elastically extending and contracting and a squeezing component used for squeezing the flexible rubber hose, the flexible rubber hose is arranged in the squeezing device, the pressure sensor is used for detecting pressure in the flexible rubber hose and connected with the flexible rubber hose, the pulse wave simulating device is used for simulating human pulse wave signals and comprises an inflation pump used for providing pulse airflow, the controller is used for controlling working state of the blood pressure simulating device and the pulse wave simulating device and collecting information fed back by the pressure sensor, and the blood pressure simulating device, the pulse wave simulating device and the pressure sensor are all electrically connected with the controller. The pulse wave blood pressure simulator can truly and accurately simulate human blood pressure and pulse signals and can be used for accurately detecting blood pressure. The invention further provides a simulating method matched with the pulse wave blood pressure simulator.
Description
Technical field
The invention belongs to technical field of medical instruments, particularly relate to a kind of pulse wave blood pressure simulator and analogy method thereof.
Background technology
In the process of producing sphygomanometer and when detecting sphygomanometer end product quality, usually need to use blood pressure simulator to test the accuracy of sphygomanometer, whether the quality detecting sphygomanometer is qualified.But existing blood pressure simulator can only be used for testing the sphygomanometer adopting oscillographic method principle, for the blood pressure simulator of oscillographic method principle design, can only be used for testing single cuff sphygmomanometer, can not be used for testing the sphygomanometer adopting pulse wave principle to measure.
Summary of the invention
The object of the invention is to the defect overcoming prior art, provide a kind of can the pulse wave blood pressure simulator of true and accurate simulation blood of human body and pulse, this simulator can detect the accuracy of sphygomanometer exactly.
Pulse wave blood pressure simulator provided by the present invention is achieved in that a kind of pulse wave blood pressure simulator, comprising:
Blood pressure analog, for simulating human blood-pressure signal, it comprises gassy and can elasticity diastole and the flexible rubber hose of contraction and the compression assemblies for extruding described flexible rubber hose, and described flexible rubber hose is located in described compression assemblies;
Pressure transducer, for detecting the pressure in described flexible rubber hose, it is connected with described flexible rubber hose;
Pulse wave analogue device, for simulating human pulse ripple signal, it comprises the inflator pump for providing air pulse;
Controller, for controlling the duty of described blood pressure analog and described pulse wave analogue device and the feedback information for collecting described pressure transducer, described blood pressure analog, described pulse wave analogue device and described pressure transducer are all electrically connected with described controller.
Further, described compression assemblies comprises fixed frame, can in described fixed frame up and down and activity box for extruding described flexible rubber hose, in described fixed frame, the displacement transducer of situation is moved up and down for detecting described activity box, there is motor and the eccentric of rotating shaft, institute's displacement sensors is located on described fixed frame, described activity box is located in described fixed frame, described motor is fixedly connected with described fixed frame, described eccentric to be sheathed in described rotating shaft and to be positioned at described activity box, the bearing can supported mutually with described eccentric is provided with in described activity box, described bearing is positioned at described eccentric below, described flexible rubber hose is positioned at the below of described activity box.
Further, described eccentric is oval.
Particularly, described fixed frame lower end is provided with the slot holding described flexible rubber hose and insert, and described slot is positioned at the below of described activity box.
More specifically, described activity box top is provided with projection, and institute's displacement sensors is provided with the groove that can hold described projection and insert.
Further, described blood pressure analog also comprises blood pressure air hose, and described blood pressure air hose one end and described flexible rubber hose are plugged into, and described pressure transducer is located on described blood pressure air hose; Described pulse wave analogue device also comprises pulse wave air hose, and described pulse wave air hose one end and described inflator pump are plugged into.
Further, described blood pressure analog also comprises blood pressure surge flask, described blood pressure air hose comprises the first blood pressure air hose and the second blood pressure air hose, plug into described flexible rubber hose and described blood pressure surge flask respectively in the two ends of described first blood pressure air hose, described second blood pressure air hose one end and described blood pressure surge flask are plugged into; Described pulse wave analogue device also comprises pulse wave surge flask, described pulse wave air hose comprises the first pulse wave air hose and the second pulse wave air hose, plug into described inflator pump and described pulse wave surge flask respectively in described first pulse wave air hose two ends, described second pulse wave air hose one end and described pulse wave surge flask are plugged into.
Particularly, the other end of described second blood pressure air hose is provided with blood pressure gas-tpe fitting, and the other end of described second pulse wave air hose is provided with pulse wave gas-tpe fitting.
More specifically, also comprise casing, described blood pressure analog, described pulse wave analogue device, described pressure transducer and described controller are all located in described casing.
Pulse wave blood pressure simulator provided by the present invention has following technique effect:
The present invention simulates blood of human body signal and human pulse ripple signal respectively by blood pressure analog and pulse wave analogue device, controller controls the time coordination relation between blood pressure analog and pulse wave analogue device, thus blood signal in true and accurate simulation human body and pulse wave signal, visible, pulse wave blood pressure simulator provided by the present invention is applicable to the accuracy detecting various sphygomanometer, be particularly useful for the sphygomanometer adopting pulse wave principle to measure, its good stability, accuracy is high, affects little by external interference.
Present invention also offers the analogy method of above-mentioned pulse wave blood pressure simulator, it comprises the following steps:
Preset described controller;
The compression assemblies of described blood pressure analog extrudes described flexible rubber hose with certain initial pressure;
Described compression assemblies extrudes described flexible rubber hose further within the T1 time makes it reach certain pressure, within the T2 time, then unclasps described flexible rubber hose make it restore to initial pressure, then quit work the T3 time; The inflator pump of described pulse wave analogue device is the cycle provide air pulse, T=T1+T2+T3 with T; The blood pressure signal of this step of continuous circulation simulation human body and pulse wave signal.
Analogy method provided by the present invention can coordinate above-mentioned pulse wave blood pressure simulator to simulate human blood-pressure signal and pulse signal truely and accurately.
Accompanying drawing explanation
Fig. 1 is the complete machine view of pulse wave blood pressure simulator in the embodiment of the present invention;
Fig. 2 is that in the embodiment of the present invention, pulse wave blood pressure simulator removes the view after casing;
Fig. 3 is the three-dimensional view of compression assemblies in the embodiment of the present invention;
Fig. 4 is the three-dimensional view at another visual angle of compression assemblies in the embodiment of the present invention;
Fig. 5 is the front view of compression assemblies in the embodiment of the present invention;
Fig. 6 is that in the embodiment of the present invention, compression assemblies removes the front view after fixed frame;
Fig. 7 is the rough schematic view of pulse wave blood pressure simulator interior arrangement connected mode in the embodiment of the present invention;
Fig. 8 is the relation coordinate diagram of " flexible rubber hose pressure-eccentric rotational angle " when detecting outside sphygomanometer in the embodiment of the present invention;
Fig. 9 is the schematic diagram of blood pressure analog and pulse wave analogue relation turnaround of unit in the embodiment of the present invention;
The coordinate diagram of blood pressure analog and pulse wave analogue device working time relation when Figure 10 is pulse wave blood pressure simulator analog detection systolic pressure in the embodiment of the present invention;
The coordinate diagram of blood pressure analog and pulse wave analogue device working time relation when Figure 11 is pulse wave blood pressure simulator analog detection diastolic pressure in the embodiment of the present invention;
The relation coordinate diagram of blood pressure analog and some interval time pulse wave analogue device working time and flexible rubber hose pressure when Figure 12 is pulse wave blood pressure simulator analog detection diastolic pressure in the embodiment of the present invention.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
See Fig. 1 and Fig. 2, embodiments provide a kind of pulse wave blood pressure simulator, comprising:
Blood pressure analog 1, for simulating human blood-pressure signal, it comprises gassy and can elasticity diastole and the flexible rubber hose 11 of contraction and the compression assemblies 12 for extruding described flexible rubber hose 11, and described flexible rubber hose 11 is located in described compression assemblies 12;
Pressure transducer 2 (see Fig. 7), for detecting the pressure in described flexible rubber hose 11, it is connected with described flexible rubber hose 11;
Pulse wave analogue device 3, for simulating human pulse ripple signal, it comprises the inflator pump 31 for providing air pulse;
Controller 4, for controlling the duty of described blood pressure analog 1 and described pulse wave analogue device 3 and the feedback information (see Fig. 7) for collecting described pressure transducer 2, described blood pressure analog 1, described pulse wave analogue device 3 and described pressure transducer 2 are all electrically connected with described controller 4.
When blood pressure analog 1 works, its compression assemblies 12 is extruding flexible rubber hose 11 rapidly, air pressure in flexible rubber hose 11 rises rapidly, then compression assemblies 12 unclasps rapidly flexible rubber hose 11, flexible rubber hose 11 is made to return to initial pressure, like this, the air pressure one rise and one drop in flexible rubber hose 11, can reach the effect of simulation human blood-pressure.When pulse wave analogue device 3 works, its inflator pump 31 penetrates fitful air pulse, thus reaches the effect of simulation pulse wave.The work of blood pressure analog 1 and pulse wave analogue device 3 controls by the pre-set programs of controller 4, and wherein, controller 4 adopts the mode of PWM to control the work of inflator pump 31.
The present invention simulates blood of human body signal and human pulse ripple signal respectively by blood pressure analog 1 and pulse wave analogue device 3, controller 4 controls the time coordination relation between blood pressure analog 1 and pulse wave analogue device 3, thus blood signal in true and accurate simulation human body and pulse wave signal, visible, pulse wave blood pressure simulator provided by the present invention is applicable to the accuracy detecting various sphygomanometer, be particularly useful for the sphygomanometer adopting pulse wave principle to measure, its good stability, accuracy is high, affects little by external interference.
See Fig. 3 and Fig. 4, described compression assemblies 12 comprises fixed frame 121, can in described fixed frame 121 up and down and activity box 122 for extruding described flexible rubber hose 11, in described fixed frame 121, the displacement transducer 123 of situation is moved up and down for detecting described activity box 122, there is motor 124 (motor) and the eccentric 125 of rotating shaft 1241, institute's displacement sensors 123 is located on described fixed frame 121, described activity box 122 is located in described fixed frame 121, described motor 124 is fixedly connected with described fixed frame 121, described eccentric 125 to be sheathed in described rotating shaft 1241 and to be positioned at described activity box 122, the bearing 1221 can supported mutually with described eccentric 125 is provided with in described activity box 122, described bearing 1221 is positioned at the below of described eccentric 125, described flexible rubber hose 11 is positioned at the below of described activity box 122.
When compression assemblies 12 works, motor 124 drives eccentric 125 to rotate, after eccentric 125 turns an angle, to support mutually with bearing 1221, bearing 1221 is sheathed on a fixed axis in activity box 122, and bearing 1221 can rotate around the axis, therefore when eccentric 125 is supported mutually with bearing 1221, activity box 122 will be forced to move down and extrude flexible rubber hose 11, like this, the pressure in flexible rubber hose 11 just rises immediately; Eccentric 125 is rapid reversed turning after being rotated further certain angle, and activity box 122 up moves by the resilience force of flexible rubber hose 11, thus the pressure in flexible rubber hose 11 declines rapidly again, thus the effect reaching the rising of simulation blood pressure and decline.Particularly, detect in the process of outside sphygomanometer at the present embodiment, the relation of the rotational angle of eccentric 125 and the pressure suffered by flexible rubber hose 11 can with reference to figure 8.
By the default control of controller 4, flexible rubber hose 11 can be extruded to a certain extent in advance, makes flexible rubber hose 11 reach an initial pressure before compression assemblies 12 works, for the predetermined angle of eccentric 125, can the coordinate system shown in reference diagram 8 arrange, wherein F1 is diastolic pressure, and F2 is systolic pressure.
Composition graphs 5 and Fig. 6, described eccentric 125 is oval.It should be noted that, the shape of eccentric 125 also according to specific needs, can be designed to satisfactory shape.
Particularly, described fixed frame 121 lower end is provided with the slot 1211 holding described flexible rubber hose 11 and insert, and described slot 1211 is positioned at the below of described activity box 122.
See Fig. 4 and Fig. 6, described activity box 122 top is provided with projection 1222, and institute's displacement sensors 123 is provided with the groove 1231 that can hold described projection 1222 and insert.In the present embodiment, displacement transducer 123 is photoelectric sensor, and when activity box 122 rises, its projection 1222 inserts in groove 1231, photoelectric sensor output feedback signal " 1 "; When activity box 122 declines, its projection 1222 detaches groove 1231 thereupon, and photoelectric sensor output feedback signal is become " 0 " from " 1 ", and the signal feedback that photoelectric sensor is collected is to controller 4, and controller 4 pairs of relative assemblies send corresponding work order.
Be appreciated that the concrete structure that the way of realization of compression assemblies 12 is not limited to the present embodiment and provides, it can also be the cylinder etc. that can provide extruding force to flexible rubber hose 11.
Composition graphs 7, described blood pressure analog 1 also comprises blood pressure air hose, and described blood pressure air hose one end and described flexible rubber hose 11 are plugged into, and described pressure transducer 2 is located on described blood pressure air hose; Described pulse wave analogue device 3 also comprises pulse wave air hose, and described pulse wave air hose one end and described inflator pump 31 are plugged into.
Particularly, described blood pressure analog 1 also comprises blood pressure surge flask 15, described blood pressure air hose comprises the first blood pressure air hose 131 and the second blood pressure air hose 132, plug into described flexible rubber hose 11 and described blood pressure surge flask 15 respectively in the two ends of described first blood pressure air hose 131, described second blood pressure air hose 132 one end and described blood pressure surge flask 15 are plugged into; Described pulse wave analogue device 3 also comprises pulse wave surge flask 16, described pulse wave air hose comprises the first pulse wave air hose 141 and the second pulse wave air hose 142, plug into described inflator pump 31 and described pulse wave surge flask 16 respectively in described first pulse wave air hose 141 two ends, described second pulse wave air hose 142 one end and described pulse wave surge flask 16 are plugged into.Second pulse wave air hose 142 also can be provided with mechanical vent valve 19, for eliminating the external interference produced when motor 124 and inflator pump 31 shake.
More specifically, the other end of described second blood pressure air hose 132 is provided with blood pressure gas-tpe fitting 17, and the other end of described second pulse wave air hose 142 is provided with pulse wave gas-tpe fitting 18.Blood pressure gas-tpe fitting 17 and pulse wave gas-tpe fitting 18 are for plugging into the air hose of outside (sphygomanometer to be detected).
The pulse wave blood pressure simulator that the embodiment of the present invention provides also comprises casing 5, and described blood pressure analog 1, described pulse wave analogue device 3, described pressure transducer 1 and described controller 4 are all located in described casing 5.
The embodiment of the present invention additionally provides a kind of analogy method of above-mentioned pulse wave blood pressure simulator, and it comprises the following steps:
Preset described controller 4;
The compression assemblies 12 of described blood pressure analog 1 extrudes described flexible rubber hose 11 with certain initial pressure;
Described compression assemblies 12 extrudes described flexible rubber hose 11 further within the T1 time makes it reach certain pressure, within the T2 time, then unclasps described flexible rubber hose 11 make it restore to initial pressure, then quit work the T3 time; The inflator pump 31 of described pulse wave analogue device 3 is the cycle provide air pulse with T, T=T1+T2+T3 (T1, relation between T2, T3 and T can see Fig. 9); The blood pressure signal of this step of continuous circulation simulation human body and pulse wave signal.
Analogy method provided by the present invention can simulate human blood-pressure signal and pulse signal truely and accurately.
Based on above-mentioned analogy method, when the pulse wave blood pressure simulator that the embodiment of the present invention provides detects outside sphygomanometer to be detected, outside sphygomanometer is connected with pulse wave blood pressure simulator/plugs into, operator are by presetting (presetting systolic pressure and diastolic pressure) controller 4, start the inflation of outside sphygomanometer, when pressure is greater than systolic pressure, the inflator pump 31 of pulse wave analogue device 3 quits work, and pulse wave signal stops; Outside sphygomanometer venting, blood pressure analog 1 works on, and when pressure is just down to systolic pressure (or near systolic pressure), inflator pump 31 restarts work, produce pulse wave signal, when pulse wave first time beats, corresponding force value is systolic pressure.The coordinate system that blood pressure lifting and the time relationship of beat pulse can be shown in Figure 10 in the process detecting systolic pressure, wherein dotted line represents blood pressure signal, solid line represents pulse (ripple) signal, abscissa representing time in this coordinate system, vertical coordinate is without actually determined numerical value, and it is only for representing beating of blood pressure signal and pulse signal.
See Figure 11, after having detected systolic pressure, above-mentioned blood pressure analog 1, pulse wave analogue device 3 work on, sphygomanometer continues venting, Δ t interval time (interval between the time point that each blood pressure signal produces and the time point that pulse signal produces) in this process between blood pressure signal and pulse signal constantly changes, when pressure reaches diastolic pressure (or near diastolic pressure), interval time, Δ t will undergo mutation, suddenly change very little, the pressure corresponding to this catastrophe point is unfolds pressure.In Figure 11, dotted line represents blood pressure signal, and solid line represents pulse (ripple) signal, the abscissa representing time in this coordinate system, and vertical coordinate is without actually determined numerical value, and it is only for representing beating of blood pressure signal and pulse signal.Interval time, the force value of Δ t may correspond to see Figure 12.
Particularly point out, the pressure measuring principle of outside (to be measured) sphygomanometer in the present embodiment and work process and existing sphygomanometer similar, therefore repeat no more in the present embodiment.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement or improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a pulse wave blood pressure simulator, is characterized in that, comprising:
Blood pressure analog, for simulating human blood-pressure signal, it comprises gassy and can elasticity diastole and the flexible rubber hose of contraction and the compression assemblies for extruding described flexible rubber hose, and described flexible rubber hose is located in described compression assemblies;
Pressure transducer, for detecting the pressure in described flexible rubber hose, it is connected with described flexible rubber hose;
Pulse wave analogue device, for simulating human pulse ripple signal, it comprises the inflator pump for providing air pulse;
Controller, for controlling the duty of described blood pressure analog and described pulse wave analogue device and the feedback information for collecting described pressure transducer, described blood pressure analog, described pulse wave analogue device and described pressure transducer are all electrically connected with described controller.
2. pulse wave blood pressure simulator as claimed in claim 1, it is characterized in that: described compression assemblies comprises fixed frame, can in described fixed frame up and down and activity box for extruding described flexible rubber hose, in described fixed frame, the displacement transducer of situation is moved up and down for detecting described activity box, there is motor and the eccentric of rotating shaft, institute's displacement sensors is located on described fixed frame, described activity box is located in described fixed frame, described motor is fixedly connected with described fixed frame, described eccentric to be sheathed in described rotating shaft and to be positioned at described activity box, the bearing can supported mutually with described eccentric is provided with in described activity box, described bearing is positioned at described eccentric below, described flexible rubber hose is positioned at the below of described activity box.
3. pulse wave blood pressure simulator as claimed in claim 2, is characterized in that: described eccentric is for oval.
4. pulse wave blood pressure simulator as claimed in claim 2, is characterized in that: described fixed frame lower end is provided with the slot holding described flexible rubber hose and insert, and described slot is positioned at the below of described activity box.
5. pulse wave blood pressure simulator as claimed in claim 2, is characterized in that: described activity box top is provided with projection, and institute's displacement sensors is provided with the groove that can hold described projection and insert.
6. pulse wave blood pressure simulator as claimed in claim 1, it is characterized in that: described blood pressure analog also comprises blood pressure air hose, described blood pressure air hose one end and described flexible rubber hose are plugged into, and described pressure transducer is located on described blood pressure air hose; Described pulse wave analogue device also comprises pulse wave air hose, and described pulse wave air hose one end and described inflator pump are plugged into.
7. pulse wave blood pressure simulator as claimed in claim 6, it is characterized in that: described blood pressure analog also comprises blood pressure surge flask, described blood pressure air hose comprises the first blood pressure air hose and the second blood pressure air hose, plug into described flexible rubber hose and described blood pressure surge flask respectively in the two ends of described first blood pressure air hose, described second blood pressure air hose one end and described blood pressure surge flask are plugged into; Described pulse wave analogue device also comprises pulse wave surge flask, described pulse wave air hose comprises the first pulse wave air hose and the second pulse wave air hose, plug into described inflator pump and described pulse wave surge flask respectively in described first pulse wave air hose two ends, described second pulse wave air hose one end and described pulse wave surge flask are plugged into.
8. pulse wave blood pressure simulator as claimed in claim 7, it is characterized in that: the other end of described second blood pressure air hose is provided with blood pressure gas-tpe fitting, the other end of described second pulse wave air hose is provided with pulse wave gas-tpe fitting.
9. the pulse wave blood pressure simulator as described in any one of claim 1-8, is characterized in that: also comprise casing, and described blood pressure analog, described pulse wave analogue device, described pressure transducer and described controller are all located in described casing.
10. the analogy method of the pulse wave blood pressure simulator described in any one of claim 1-9, is characterized in that, comprise the following steps:
Preset described controller;
The compression assemblies of described blood pressure analog extrudes described flexible rubber hose with certain initial pressure;
Described compression assemblies extrudes described flexible rubber hose further within the T1 time makes it reach certain pressure, within the T2 time, then unclasps described flexible rubber hose make it restore to initial pressure, then quit work the T3 time; The inflator pump of described pulse wave analogue device is the cycle provide air pulse, T=T1+T2+T3 with T; The blood pressure signal of this step of continuous circulation simulation human body and pulse wave signal.
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Cited By (6)
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| CN109330577A (en) * | 2018-11-11 | 2019-02-15 | 青岛雅世医疗器械有限公司 | A kind of sphygmomanometer test device for imitating human-body emitting blood pressure signal |
| CN110420018A (en) * | 2019-09-06 | 2019-11-08 | 桐庐县检验检测中心 | A kind of Wrist-cuff device calibrating installation |
| CN111616692A (en) * | 2020-05-14 | 2020-09-04 | 李永生 | Extrusion type execution system of noninvasive blood pressure simulator and control method thereof |
| CN113367669A (en) * | 2021-07-07 | 2021-09-10 | 湖南敬凯投资管理有限公司 | Pulse reproduction device and system, control method and reproduction method thereof |
| CN113679366A (en) * | 2021-08-19 | 2021-11-23 | 上海市计量测试技术研究院 | Blood pressure simulator performance testing device and method |
| CN114469031A (en) * | 2022-01-15 | 2022-05-13 | 深圳市奥极医疗科技有限公司 | Test device of sphygmomanometer |
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| CN109330577A (en) * | 2018-11-11 | 2019-02-15 | 青岛雅世医疗器械有限公司 | A kind of sphygmomanometer test device for imitating human-body emitting blood pressure signal |
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| CN113367669A (en) * | 2021-07-07 | 2021-09-10 | 湖南敬凯投资管理有限公司 | Pulse reproduction device and system, control method and reproduction method thereof |
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| CN113679366A (en) * | 2021-08-19 | 2021-11-23 | 上海市计量测试技术研究院 | Blood pressure simulator performance testing device and method |
| CN114469031A (en) * | 2022-01-15 | 2022-05-13 | 深圳市奥极医疗科技有限公司 | Test device of sphygmomanometer |
| CN114469031B (en) * | 2022-01-15 | 2024-06-14 | 深圳市奥极医疗科技有限公司 | Blood pressure meter testing device |
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