CN116359050A - Counterpulsation sacculus fatigue testing device and testing method thereof - Google Patents
Counterpulsation sacculus fatigue testing device and testing method thereof Download PDFInfo
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- 238000012360 testing method Methods 0.000 title claims abstract description 83
- 238000009661 fatigue test Methods 0.000 title claims abstract description 43
- 210000005077 saccule Anatomy 0.000 claims abstract description 33
- 230000001105 regulatory effect Effects 0.000 claims description 84
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 69
- 239000007788 liquid Substances 0.000 claims description 41
- 230000000007 visual effect Effects 0.000 claims description 41
- 230000001276 controlling effect Effects 0.000 claims description 27
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 14
- 230000001502 supplementing effect Effects 0.000 claims description 14
- 238000012800 visualization Methods 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 11
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 230000002792 vascular Effects 0.000 claims description 5
- 238000007654 immersion Methods 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 2
- LOKCTEFSRHRXRJ-UHFFFAOYSA-I dipotassium trisodium dihydrogen phosphate hydrogen phosphate dichloride Chemical compound P(=O)(O)(O)[O-].[K+].P(=O)(O)([O-])[O-].[Na+].[Na+].[Cl-].[K+].[Cl-].[Na+] LOKCTEFSRHRXRJ-UHFFFAOYSA-I 0.000 claims 1
- 239000002953 phosphate buffered saline Substances 0.000 claims 1
- 210000004204 blood vessel Anatomy 0.000 description 7
- 230000008602 contraction Effects 0.000 description 5
- 235000011187 glycerol Nutrition 0.000 description 5
- 239000008363 phosphate buffer Chemical class 0.000 description 4
- 239000012266 salt solution Substances 0.000 description 4
- 239000008280 blood Substances 0.000 description 3
- 210000004369 blood Anatomy 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000000916 dilatatory effect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000012806 monitoring device Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 206010019280 Heart failures Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 210000000709 aorta Anatomy 0.000 description 1
- 210000002376 aorta thoracic Anatomy 0.000 description 1
- 210000001765 aortic valve Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000035487 diastolic blood pressure Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000010247 heart contraction Effects 0.000 description 1
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- 230000010412 perfusion Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
- G01N3/36—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by pneumatic or hydraulic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
The invention discloses a counterpulsation saccule fatigue testing device and a testing method thereof. When the positive pressure is injected into the balloon, the electromagnetic valve for controlling the positive pressure is opened, the electromagnetic valve for controlling the negative pressure is closed, and conversely, the electromagnetic valve for controlling the positive pressure is closed, and the electromagnetic valve for controlling the negative pressure is opened, so that the switching state of the positive pressure and the negative pressure in the balloon is realized, the test box body not only provides the positive pressure and the negative pressure for the balloon, but also can record the circulation times.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to a counterpulsation saccule fatigue test device and a test method thereof.
Background
The balloon counterpulsation in the aorta is a mechanical auxiliary circulation method, and the basic principle is that a balloon catheter is placed in the descending aorta and is externally connected with a control device to carry out inflation and deflation along with the diastole and the systole of the heart. When a patient has serious cardiac insufficiency, the balloon simulates the frequency and amplitude of diastole and systole, and when the heart contracts and the aortic valve opens, the balloon is rapidly deflated, so that the heart blood discharge amount is increased; otherwise, the balloon is inflated rapidly, increasing the arterial diastolic pressure and thus increasing coronary perfusion.
Under the control of an external device, the balloon adopts a positive and negative pressure mode to realize the functions of dilating and contracting according to the frequency range of the heart beating of a human body, and has high requirements on the fatigue performance of the balloon. The fatigue resistance means the ability to withstand repeated stress, that is, the balloon is pressurized for a predetermined time period to bring the pressure in the balloon to a predetermined value, then the balloon is held for a certain period of time, then the pressure in the balloon is released for another predetermined time period to bring the pressure in the balloon down to another predetermined pressure value, and finally the series of processes is repeated, and the test is stopped after the series of processes reaches a predetermined number of repetitions. If no leakage occurs in the whole process, the fatigue of the balloon is qualified, otherwise, the balloon is unqualified.
The existing balloon fatigue testing device, such as the one disclosed in the Chinese patent document CN201410479072, adopts a liquid state testing system to test the balloon fatigue performance, and has the defects that the fatigue test can only be carried out in a single balloon testing process, the efficiency is low, the preferred cycle frequency is 20-25 times, the frequency phase difference between the cycle frequency and the frequency of the heart expansion and contraction simulated by the counterpulsation balloon is larger, and the fatigue testing device is not suitable for the fatigue test of the counterpulsation balloon; similar to the hydraulic test system of the balloon disclosed in another Chinese patent document CN201010120717, the hydraulic test system of the balloon adopts liquid water to inject the balloon so as to search the fatigue resistance of the balloon, and the test requirement of the anti-pulsation balloon on the fatigue resistance generated after the air pressure injection cannot be met. None of the above fatigue testing devices is able to simulate the vascular environment in a human body.
Disclosure of Invention
The invention aims to provide a counterpulsation saccule fatigue test device and a test method thereof, which simulate the environment of blood vessels in a human body, test the fatigue performance of the counterpulsation saccule by adopting a positive pressure and negative pressure alternating cycle test method, have stable state, convenient operation and large cycle frequency regulation range, and can test 1-12 saccules at the same time, thereby having high efficiency.
In order to achieve the above purpose, the present invention provides the following technical solutions:
on one hand, the counterpulsation saccule fatigue test device comprises a test box body, a visual cylinder body, a pneumatic pressure compensating device and a control circuit, wherein the visual cylinder body can be used for simulating the vascular environment in a human body; the test box body comprises a positive pressure regulating valve and a negative pressure regulating valve for providing positive and negative pressure gas mediums for the balloon to be tested, and the positive pressure regulating valve and the negative pressure regulating valve are connected with an air port; a balloon inlet and outlet channel and a balloon limiting device for installing a balloon to be tested are arranged in the visualization cylinder; the air port is communicated with the balloon inlet and outlet channel through a pipeline; the inlet and outlet channels are communicated with the balloon to be tested, and the balloon limiting device is used for limiting the balloon to be tested; the two sides of the visual cylinder body are also provided with cylinder covers for sealing, the inlet and outlet channels penetrate through the cylinder cover arranged on one side of the visual cylinder body, and the cylinder cover on the other side of the visual cylinder body is provided with a cylinder cover upper end water outlet for controlling the liquid pressure and a cylinder cover lower end water inlet for pouring liquid; the pneumatic pressure compensating device comprises a pressure regulating valve and a central water outlet, the air inlet of the pressure regulating valve is connected with the air supply end, the water outlet at the upper end of the cylinder cover is connected with the central water outlet through a pipeline, the pneumatic pressure compensating device is used for maintaining the pressure in the visual cylinder body constant, and the central water outlet of the pneumatic pressure compensating device is connected with the water outlet at the upper end of the visual cylinder body through an air pipe and communicated with the pressure. When the saccule is in diastole, the environmental pressure of the liquid in the visual cylinder body is increased, part of the liquid flows into the pneumatic pressure supplementing device, the pressure regulating valve reduces the gas volume of the pneumatic pressure supplementing device and plays a role in reducing pressure, otherwise, the pressure regulating valve increases the gas volume of the pneumatic pressure supplementing device and further compresses the liquid volume in the pneumatic pressure supplementing device and plays a role in increasing pressure; the control circuit comprises an electromagnetic valve for controlling the positive pressure regulating valve and the negative pressure regulating valve, the balloon to be tested is respectively connected with the positive pressure regulating valve and the negative pressure regulating valve through an air pipe, the electromagnetic valve is used for controlling air flow, the control circuit controls the positive pressure regulating valve to charge pressure to the balloon to be tested in a specified time through the electromagnetic valve, the pressure in the balloon to be tested reaches a specified value, then the balloon to be tested is kept for a period of time, then the negative pressure regulating valve is controlled to release the pressure in the balloon to be tested in another specified time, the pressure in the balloon to be tested is reduced to another specified pressure value, and the process is repeated. The saccule is respectively connected with the positive pressure regulating valve and the negative pressure regulating valve through air pipes, and the electromagnetic valve is adopted to control air flow. When the positive pressure is injected into the balloon, the electromagnetic valve for controlling the positive pressure is opened, the electromagnetic valve for controlling the negative pressure is closed, and conversely, the electromagnetic valve for controlling the positive pressure is closed, and the electromagnetic valve for controlling the negative pressure is opened, so that the switching state of the positive pressure and the negative pressure in the balloon is realized.
When the positive pressure is injected into the balloon to be tested, the electromagnetic valve for controlling the positive pressure is opened, the electromagnetic valve for controlling the negative pressure is closed, and otherwise, the electromagnetic valve for controlling the positive pressure is closed, and the electromagnetic valve for controlling the negative pressure is opened, so that the switching state of the positive pressure and the negative pressure in the balloon is realized.
Among the above-mentioned counterpulsation sacculus fatigue test device, the test box still includes test box frame, is provided with box exhaust device, touch-sensitive screen, test control button, scram control button and power master switch on the test box frame, be provided with control circuit in the test box, exhaust device, touch-sensitive screen, test control button, scram control button and power master switch are connected to the control circuit electricity respectively, and control circuit provides positive negative pressure and record test cycle number in for the sacculus that awaits measuring through control positive pressure air-vent valve and negative pressure air-vent valve.
The device for testing the fatigue of the counterpulsation saccule further comprises an arc-shaped bracket, and the inside of the visual cylinder body is fixedly connected with the testing box body through the arc-shaped bracket.
In the counterpulsation saccule fatigue test device, the inner bottom of the visual cylinder body is also provided with a water leakage guide groove and a water logging detector, the water logging detector is positioned in the water leakage guide groove, and the water logging detector is connected with a control circuit and is used for monitoring the leakage condition of liquid in the visual cylinder body. When the visual cylinder body leaks water and flows through the guide groove, the resistance value of the water logging detector can change, and then the current is changed, so that the water logging detector can generate a buzzing alarm and stop the fatigue testing process.
In the counterpulsation saccule fatigue test device, the number of the air port, the saccule inlet and outlet channels and the saccule limiting devices is 1-12, and a circular pore canal is arranged at the center of each saccule limiting device. The air ports can work simultaneously or independently, and the on-off state is controlled by the test control system; the balloon inlet and outlet channel comprises a sealing gasket and a locking gasket, so that the water tightness of the visual cylinder body can be ensured, and the balloon inlet and outlet channel can be used as a channel for the balloon to enter the visual cylinder body. The center of each balloon limiting device is provided with a circular duct, so that the balloon limiting device can be used for limiting the test position of the balloon and measuring the degree of balloon diastole and contraction.
In the counterpulsation sacculus fatigue test device, the liquid environment in the visual cylinder body is glycerol or water or phosphate buffer salt solution. All three can simulate the liquid environment of blood vessels, wherein glycerol can also simulate the viscosity of blood, and phosphate buffer salt solution can also simulate the PH environment of blood vessels.
In the counterpulsation sacculus fatigue test device, the adjusting range of the positive pressure adjusting valve is 0-750 KPa, and the adjusting range of the negative pressure adjusting valve is-160-0 KPa.
The cycle frequency range of the counterpulsation saccule fatigue test device is 1-140 times/min.
On the other hand, the testing method of the counterpulsation saccule fatigue testing device uses the counterpulsation saccule fatigue testing device and comprises the following steps:
step one: the reinforcement part of the balloon inlet and outlet channel at the cylinder cover is disassembled, the folded balloon to be tested passes through the balloon inlet and outlet channel to enter the balloon limiting device through the sheath tube, and the other end of the balloon to be tested is connected with the electromagnetic valve, the positive pressure regulating valve and the negative pressure regulating valve through the air pipe;
step two: the pressure regulating valve of the pneumatic pressure compensating device is connected with the air supply end, the central water outlet is connected with the water outlet at the upper end of the cylinder cover through an air pipe, the liquid source end is connected with the water inlet at the lower end of the cylinder cover, so that liquid can be poured, and when the liquid in the pneumatic pressure compensating device reaches a proper position, the liquid injection is stopped, and the pneumatic pressure compensating device is closed;
step three: adjusting the pneumatic pressure supplementing device, the positive pressure regulating valve and the negative pressure regulating valve to proper pressure; turning on a power supply main switch, and setting inflation and deflation time to determine the cycle frequency; initializing an evacuating balloon; the test is started after the test times are set, and the test is stopped when the diastole and the systole of the balloon reach the set times.
The beneficial effects of the invention are as follows:
according to the invention, the environment of the blood vessel in the human body is simulated through the visual cylinder body, and the environment comprises a liquid environment and a pressure environment, so that the fatigue test accuracy of the balloon is higher; the diastole and systole functions of the counterpulsation sacculus are realized through the alternate circulation test of positive pressure and negative pressure; the pneumatic pressure compensating device dynamically adjusts pressure fluctuation generated in the process of the expansion and contraction of the sacculus, and maintains the internal pressure constant; by controlling a plurality of groups of valves and pressure sensors, the balloon is pressurized by adopting a gas medium, so that the high-frequency diastole and systole functions can be realized, and the counterpulsation balloon fatigue test is realized; through the multi-station fixing device, 1-12 groups of balloons can be tested at the same time, so that the test is more efficient.
The invention can facilitate the installation of the sacculus through the meticulous sacculus inlet and outlet channel, and has good sealing property; through transparent box, realized visual counterpulsation sacculus simulation test system.
Drawings
FIG. 1 is a schematic diagram of the left side construction principle of the present invention;
FIG. 2 is a right side schematic view of the present invention;
FIG. 3 is a schematic diagram of the control circuit structure of the present invention;
in the figure:
1: a test box; 1-1: a positive pressure regulating valve; 1-2: a negative pressure regulating valve; 1-3: an air port; 1-4: an arc-shaped bracket; 1-5: a water leakage guide groove; 1-6: a water immersion detector; 1-7: a box body exhaust device; 1-8: a test box frame; 1-9: a touch screen; 1-10: testing a control button; 1-11: an emergency stop control button; 1-12: a power supply main switch; solenoid valves 1-13;2: a visual cylinder; 2-1: balloon inlet and outlet channels; 2-2: a cylinder cover; 2-3: a balloon limiting device; 2-4: a pressure monitoring device; 2-5 parts of water outlets at the upper end of the cylinder cover; 2-6 parts of a water inlet at the lower end of the cylinder cover; 3: pneumatic pressure compensating device; 3-1: a pressure regulating valve; 3-2: a central water outlet; 4: and a control circuit.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1 to 3, the invention provides a counterpulsation saccule fatigue test device, which comprises a test box body 1, a visual cylinder body 2 which can be used for simulating the vascular environment in a human body, a pneumatic pressure supplementing device 3 and a control circuit 4; the test box body 1 comprises a positive pressure regulating valve 1-1 and a negative pressure regulating valve 1-2 for providing positive and negative pressure gas media for the balloon to be tested, and the positive pressure regulating valve 1-1 and the negative pressure regulating valve 1-2 are connected with a gas path port 1-3; a balloon inlet and outlet channel 2-1 and a balloon limiting device 2-3 for installing a balloon to be tested are arranged in the visualization cylinder body 2; the air port 1-3 is communicated with the balloon inlet and outlet channel 2-1 through a pipeline; the inlet and outlet channel 2-1 is communicated with the balloon to be tested, and the balloon limiting device 2-3 is used for limiting the balloon to be tested; the two sides of the visual cylinder body 2 are also provided with cylinder covers 2-2 used for sealing, the inlet and outlet channels 2-1 penetrate through the cylinder covers 2-2 arranged on one side of the visual cylinder body 2, and the cylinder covers 2-2 arranged on the other side of the visual cylinder body 2 are provided with cylinder cover upper end water outlets 2-5 used for controlling liquid pressure and cylinder cover lower end water inlets 2-6 used for filling liquid; the pneumatic pressure compensating device 3 comprises a pressure regulating valve 3-1 and a central water outlet 3-2, an air inlet of the pressure regulating valve 3-1 is connected with an air supply end, a water outlet 2-5 at the upper end of the cylinder cover is connected with the central water outlet 3-2 through a pipeline, the pneumatic pressure compensating device 3 is used for maintaining the pressure of the visual cylinder body 2 constant, the central water outlet 3-2 of the pneumatic pressure compensating device 3 is connected with the water outlet 2-5 at the upper end of the visual cylinder body 2 through an air pipe, and the pressure is communicated; when the saccule is in diastole, the environmental pressure of the liquid in the visual cylinder body is increased, part of the liquid flows into the pneumatic pressure supplementing device, the pressure regulating valve reduces the gas volume of the pneumatic pressure supplementing device and plays a role in reducing pressure, otherwise, the pressure regulating valve increases the gas volume of the pneumatic pressure supplementing device and further compresses the liquid volume in the pneumatic pressure supplementing device and plays a role in increasing pressure; the control circuit 4 comprises electromagnetic valves 1-13 for controlling the positive pressure regulating valve 1-1 and the negative pressure regulating valve 1-2, the balloon to be tested is respectively connected with the positive pressure regulating valve 1-1 and the negative pressure regulating valve 1-2 through air pipes, the electromagnetic valves 1-13 are adopted to control air flow, the control circuit 4 controls the positive pressure regulating valve 1-1 to charge the balloon to be tested for a specified time through the electromagnetic valves 1-13, the pressure in the balloon to be tested reaches a specified value, then the balloon to be tested is kept for a period of time, then the negative pressure regulating valve 1-2 is controlled to release the pressure in the balloon to be tested for another specified time, the pressure in the balloon to be tested is reduced to another specified pressure value, and the process is repeated. The saccule is respectively connected with the positive pressure regulating valve and the negative pressure regulating valve through air pipes, and the electromagnetic valve is adopted to control air flow. When the positive pressure is injected into the balloon, the electromagnetic valve for controlling the positive pressure is opened, the electromagnetic valve for controlling the negative pressure is closed, and conversely, the electromagnetic valve for controlling the positive pressure is closed, and the electromagnetic valve for controlling the negative pressure is opened, so that the switching state of the positive pressure and the negative pressure in the balloon is realized.
The test box body 1 further comprises a test box body frame 1-8, the test box body frame 1-8 is provided with a box body exhaust device 1-7, a touch screen 1-9, a test control button 1-10, an emergency stop control button 1-11 and a power supply main switch 1-12, a control circuit 4 is arranged in the test box body 1, the control circuit 4 is respectively and electrically connected with the exhaust device 1-7, the touch screen 1-9, the test control button 1-10, the emergency stop control button 1-11 and the power supply main switch 1-12, and the control circuit 4 provides positive and negative pressures for the balloon to be tested and records the test cycle times by controlling the positive pressure regulating valve 1-1 and the negative pressure regulating valve 1-2.
The visual cylinder body is characterized by further comprising an arc-shaped bracket 1-4, and the visual cylinder body is internally and fixedly connected with the test box body 1 through the arc-shaped bracket 1-4.
The bottom of the visualization cylinder body 2 is also provided with a water leakage guide groove 1-5 and a water detector 1-6, the water detector 1-6 is positioned in the water leakage guide groove 1-5, and the water detector 1-6 is connected with a control circuit 4 and is used for monitoring the leakage condition of liquid in the visualization cylinder body 2. When the visual cylinder body leaks water and flows through the guide groove, the resistance value of the water logging detector can change, and then the current is changed, so that the water logging detector can generate a buzzing alarm and stop the fatigue testing process.
The number of the air ports 1-3, the balloon inlet and outlet channels 2-1 and the balloon limiting devices 2-3 is 1-12, the air ports 1-3 can work simultaneously or independently, and the on-off state is controlled by the test control circuit 4; the balloon inlet and outlet channel 2-1 comprises a sealing gasket and a locking gasket, so that the water tightness of the visual cylinder body can be ensured, and the balloon inlet and outlet channel can be used as a channel for the balloon to enter the visual cylinder body; the center of each balloon limiting device 2-3 is provided with a circular duct, which not only can be used for limiting the test position of the balloon, but also can be used for measuring the degree of the balloon diastole and contraction.
The liquid environment in the visualization cylinder 2 is glycerin or water or phosphate buffer salt solution. All three can simulate the liquid environment of blood vessels, wherein glycerol can also simulate the viscosity of blood, and phosphate buffer salt solution can also simulate the PH environment of blood vessels.
The adjusting range of the positive pressure adjusting valve 1-1 is 0-750 KPa, and the adjusting range of the negative pressure adjusting valve 1-2 is-160-0 KPa.
The cycle frequency range of the counterpulsation saccule fatigue test device is 1-140 times/min.
The invention also provides a testing method of the counterpulsation saccule fatigue testing device, which comprises the following steps of:
step one: the reinforcement part of the balloon inlet and outlet channel 2-1 at the cylinder cover 2-2 is disassembled, the folded balloon to be tested passes through the locking gasket and the sealing gasket and is pulled to a proper position through the sheath tube, the balloon to be tested passes through the balloon inlet and outlet channel 2-1 and enters the balloon limiting device 2-3, the sealing gasket and the locking gasket are installed in situ, and the other end of the balloon to be tested is connected with the electromagnetic valve 1-13, the positive pressure regulating valve 1-1 and the negative pressure regulating valve 1-2 through the air tube;
step two: the pressure regulating valve 3-1 of the pneumatic pressure compensating device 3 is connected with the air supply end, the central water outlet 3-2 is connected with the water outlet 2-5 at the upper end of the cylinder cover through an air pipe, the liquid source end is connected with the water inlet 2-6 at the lower end of the cylinder cover, so that liquid can be poured, and when the liquid in the pneumatic pressure compensating device 3 reaches a proper position, the liquid injection is stopped, and the pneumatic pressure compensating device 3 is closed;
step three: the pneumatic pressure supplementing device 3, the positive pressure regulating valve 1-1 and the negative pressure regulating valve 1-2 are regulated to proper pressures; turning on the power supply main switch 1-12, and setting the charging and discharging time to determine the circulation frequency; initializing an evacuating balloon; the test is started after the test times are set, and the test is stopped when the diastole and the systole of the balloon reach the set times.
Examples
First, as shown in fig. 1, 2 and 3, a counterpulsation balloon fatigue test device comprises a test box 1, a visual cylinder 2 and a pneumatic pressure compensating device 3. The test box body 1 comprises a positive pressure regulating valve 1-1, a negative pressure regulating valve 1-2, an air port 1-3, an arc-shaped bracket 1-4, a water leakage guide groove 1-5, a water logging detector 1-6, a box body air exhaust device 1-7, a test box body frame 1-8, a touch screen 1-9, a test control button 1-10, an emergency stop control button 1-11 and a power supply main switch 1-12, wherein the test box body not only provides positive and negative pressure in a balloon, but also can record the circulation times; the visual cylinder body 2 consists of a balloon inlet and outlet channel 2-1, a cylinder cover 2-2, a balloon limiting device 2-3 and a pressure monitoring device 2-4, and simulates the vascular environment in a human body; the pneumatic pressure compensating device 3 comprises a pressure regulating valve 3-1 and a central water outlet 3-2, and can maintain the pressure in the visual cylinder body 2 constant.
In this embodiment, the liquid in the visualization cylinder 2 is glycerin, and is injected into the visualization cylinder 2 through the water injection port at the lower end of the right cylinder cover. The left cylinder cover 2-2 is uniformly provided with 6 balloon inlet and outlet channels 2-1, and the number of balloon limiting devices 2-3 arranged in the left cylinder cover is 6. The number of the air ports 1-3 on the test box body 1 is 6.
The pressure values of the diastole and the systole of the counterpulsation saccule are respectively regulated by a positive pressure regulating valve 1-1 and a negative pressure regulating valve 1-2, wherein the set value of the positive pressure regulating valve 1-1 is 50KPa, the inflation time of each period is 0.428s, the set value of the negative pressure regulating valve 1-2 is-80 KPa, the deflation time of each period is 0.428s, and the frequency is set to 70 times/min.
The pressure value set by the pressure regulating valve 3-1 of the pneumatic pressure compensating device 3 is 16KPa, and the in-cylinder pressure of the visual cylinder body is maintained to be constant.
The circuit diagram of the test equipment in the test box body 1 is shown in fig. 3, and the test control button switch 1-10, the scram control button switch 1-11, the power supply main switch 1-12 and the electromagnetic valve 1-13 are connected to form a circuit control system according to the circuit logic of fig. 3.
A testing method of a counterpulsation saccule fatigue testing device comprises the following steps:
firstly, detaching a reinforcement part of a balloon inlet and outlet channel 2-1 at a cylinder cover 2-2, passing a folded balloon through a locking gasket and a sealing gasket through a sheath tube and pulling the folded balloon to a proper position, passing the balloon through the balloon inlet and outlet channel 2-1 and entering a balloon limiting device 2-3, installing the sealing gasket and the locking gasket in situ, and connecting the other end of the balloon with an electromagnetic valve 1-13, a positive pressure regulating valve 1-1 and a negative pressure regulating valve 1-2 through an air pipe;
the pressure regulating valve 3-1 of the pneumatic pressure compensating device 3 is connected with the air supply end, the central water outlet 3-2 is connected with the water outlet 2-5 at the upper end of the cylinder cover through an air pipe, the liquid source end is connected with the water inlet 2-6 at the lower end of the cylinder cover, so that liquid can be poured, and when the liquid in the pneumatic pressure compensating device 3 reaches a half position, the liquid injection is stopped, and the pneumatic pressure compensating device 3 is closed;
the method comprises the steps of adjusting a pressure valve 3-1 of a pneumatic pressure supplementing device 3 to be 16KPa, a positive pressure regulating valve 1-1 to be 50KPa and a negative pressure regulating valve 1-2 to be-80 KPa; turning on a power supply main switch 1-12, setting the inflation time to be 0.428s and the deflation time to be 0.428s on a touch screen 1-9 to determine the cycle frequency to be 70 times/min; pressing an initialization button to evacuate the balloon; setting test times through the touch screens 1-9; the test is started by pressing the start button, and the test is stopped when the balloon is relaxed and contracted for a set number of times.
If abnormal phenomenon occurs in the balloon test process, the fatigue test process can be stopped by pressing the emergency stop buttons 1-11; the water logging detector 1-6 can give out a beeping alarm and stop the fatigue test process when the water leakage phenomenon of the visual cylinder body 2 occurs.
The technical scheme of the invention has the following advantages:
1. the visual counterpulsation sacculus simulation test system is realized through the transparent box body.
2. According to the invention, the environment of the blood vessel in the human body is simulated through the visual cylinder body, including the liquid environment and the pressure environment, so that the balloon fatigue test accuracy is higher.
3. The invention can be easily installed by means of the meticulous balloon inlet and outlet channel, and has good sealing property.
4. The pneumatic pressure supplementing device dynamically adjusts pressure fluctuation generated in the process of dilating and contracting the saccule, and maintains constant internal pressure.
5. The invention realizes the diastole and contraction functions of the counterpulsation sacculus through the alternate circulation test of positive pressure and negative pressure.
6. According to the invention, by controlling a plurality of groups of valves and pressure sensors and adopting a gas medium to pressurize the balloon, the high-frequency diastole and systole functions can be realized, so that the anti-blog balloon fatigue test is realized.
7. According to the invention, through the multi-station fixing device, 1-12 groups of balloons can be tested at the same time, so that the test is more efficient.
The foregoing description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical solution of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (9)
1. A counterpulsation balloon fatigue testing device, comprising: the device comprises a test box body (1), a visual cylinder body (2) which can be used for simulating the vascular environment in a human body, a pneumatic pressure compensating device (3) and a control circuit (4); the test box body (1) comprises a positive pressure regulating valve (1-1) and a negative pressure regulating valve (1-2) for providing positive and negative pressure gas media for the balloon to be tested, and the positive pressure regulating valve (1-1) and the negative pressure regulating valve (1-2) are connected with a gas port (1-3); a balloon inlet and outlet channel (2-1) and a balloon limiting device (2-3) for installing a balloon to be tested are arranged in the visualization cylinder body (2); the air port (1-3) is communicated with the balloon inlet and outlet channel (2-1) through a pipeline; the inlet and outlet channels (2-1) are communicated with the balloon to be tested, and the balloon limiting device (2-3) is used for limiting the balloon to be tested; the two sides of the visual cylinder body (2) are also provided with cylinder covers (2-2) for sealing, the inlet and outlet channels (2-1) penetrate through the cylinder covers (2-2) arranged on one side of the visual cylinder body (2), and the cylinder covers (2-2) arranged on the other side of the visual cylinder body (2) are provided with cylinder cover upper end water outlets (2-5) for controlling liquid pressure and cylinder cover lower end water inlets (2-6) for filling liquid; the pneumatic pressure compensating device (3) comprises a pressure regulating valve (3-1) and a central water outlet (3-2), an air inlet of the pressure regulating valve (3-1) is connected with an air supply end, a water outlet (2-5) at the upper end of the cylinder cover is connected with the central water outlet (3-2) through a pipeline, and the pneumatic pressure compensating device (3) is used for maintaining the pressure of the visualized cylinder body (2) constant; the control circuit (4) comprises electromagnetic valves (1-13) for controlling the positive pressure regulating valve (1-1) and the negative pressure regulating valve (1-2), the balloon to be tested is respectively connected with the positive pressure regulating valve (1-1) and the negative pressure regulating valve (1-2) through air pipes, the electromagnetic valves (1-13) are adopted to control air flow, the control circuit (4) controls the positive pressure regulating valve (1-1) to charge pressure to the balloon to be tested in a specified time through the electromagnetic valves (1-13) so that the pressure in the balloon to be tested reaches a specified value, then the balloon to be tested is kept for a period of time, then the negative pressure regulating valve (1-2) is controlled to release the pressure in the balloon to be tested in another specified time, the pressure in the balloon to be tested is reduced to another specified pressure value, and the process is repeated; when the positive pressure is injected into the balloon to be tested, the electromagnetic valve for controlling the positive pressure is opened, the electromagnetic valve for controlling the negative pressure is closed, and otherwise, the electromagnetic valve for controlling the positive pressure is closed, and the electromagnetic valve for controlling the negative pressure is opened, so that the switching state of the positive pressure and the negative pressure in the balloon to be tested is realized.
2. The counterpulsation saccule fatigue test device according to claim 1, wherein the test box body (1) further comprises a test box body frame (1-8), the test box body frame (1-8) is provided with a box body exhaust device (1-7), a touch screen (1-9), a test control button (1-10), a sudden stop control button (1-11) and a power supply main switch (1-12), a control circuit (4) is arranged in the test box body (1), the control circuit (4) is respectively electrically connected with the exhaust device (1-7), the touch screen (1-9), the test control button (1-10), the sudden stop control button (1-11) and the power supply main switch (1-12), and the control circuit (4) provides positive and negative pressures for the saccule to be tested and records the number of test cycles by controlling the positive pressure regulating valve (1-1) and the negative pressure regulating valve (1-2).
3. The counterpulsation saccule fatigue test device according to claim 1, further comprising an arc-shaped bracket (1-4), wherein the visualization cylinder body (2) is fixedly connected with the test box body (1) through the arc-shaped bracket (1-4).
4. The counterpulsation saccule fatigue test device according to claim 1, wherein a water leakage guide groove (1-5) and a water immersion detector (1-6) are further arranged at the bottom of the visualization cylinder body (2), the water immersion detector (1-6) is positioned in the water leakage guide groove (1-5), and the water immersion detector (1-6) is connected with the control circuit (4) and is used for monitoring the leakage condition of liquid in the visualization cylinder body (2).
5. The counterpulsation saccule fatigue test device according to claim 1, wherein the number of the air passage (1-3), the saccule inlet and outlet channels (2-1) and the saccule limiting devices (2-3) is 1-12, and a circular pore canal is arranged at the central position of each saccule limiting device (2-3).
6. The counterpulsation balloon fatigue test device according to claim 1, wherein the liquid environment within the visualization cylinder (2) is glycerol or water or phosphate buffered saline.
7. The counterpulsation balloon fatigue test device according to claim 1, wherein the positive pressure regulating valve (1-1) has an adjusting range of 0 to 750KPa, and the negative pressure regulating valve (1-2) has an adjusting range of-160 to 0KPa.
8. The counterpulsation balloon fatigue testing device according to claim 1, wherein the counterpulsation balloon fatigue testing device has a cycle frequency ranging from 1 to 140 cycles/min.
9. A testing method of a counterpulsation balloon fatigue testing device, characterized in that the counterpulsation balloon fatigue testing device according to any of claims 1 to 8 is used, comprising the steps of:
step one: unloading a balloon inlet and outlet channel (2-1) at a cylinder cover (2-2), passing a folded balloon to be tested through the balloon inlet and outlet channel (2-1) through a sheath tube to enter a balloon limiting device (2-3), and connecting the other end of the balloon to be tested with an electromagnetic valve (1-13), a positive pressure regulating valve (1-1) and a negative pressure regulating valve (1-2) through an air tube;
step two: the pressure regulating valve (3-1) of the pneumatic pressure compensating device (3) is connected with the air supply end, the central water outlet (3-2) is connected with the water outlet (2-5) at the upper end of the cylinder cover through an air pipe, the liquid source end is connected with the water inlet (2-6) at the lower end of the cylinder cover, so that liquid can be poured, and when the liquid in the pneumatic pressure compensating device (3) reaches a proper position, the liquid injection is stopped, and the pneumatic pressure compensating device (3) is closed;
step three: the pneumatic pressure supplementing device (3), the positive pressure regulating valve (1-1) and the negative pressure regulating valve (1-2) are regulated to proper pressure; turning on a power supply main switch (1-12), and setting inflation and deflation time to determine cycle frequency; initializing an evacuating balloon; the test is started after the test times are set, and the test is stopped when the diastole and the systole of the balloon reach the set times.
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| CN202211735095.2A CN116359050A (en) | 2022-12-31 | 2022-12-31 | Counterpulsation sacculus fatigue testing device and testing method thereof |
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| CN202211735095.2A CN116359050A (en) | 2022-12-31 | 2022-12-31 | Counterpulsation sacculus fatigue testing device and testing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117760718A (en) * | 2024-02-22 | 2024-03-26 | 湖南普晖生物科技有限公司 | device for testing performance of surgical instrument |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117760718A (en) * | 2024-02-22 | 2024-03-26 | 湖南普晖生物科技有限公司 | device for testing performance of surgical instrument |
| CN117760718B (en) * | 2024-02-22 | 2024-04-26 | 湖南普晖生物科技有限公司 | Device for testing performance of surgical instrument |
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