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Overall water leakage tester of artificial vascular membrane 1.
Instrument features This equipment is a testing equipment for testing the performance of the manufacturer's products
.
It is composed of programmable controller, touch screen, force sensor, transmission device, on-board printer, etc.
It provides Chinese and English menu display, and has man-machine dialogue to set various parameters and automatically run the test mode
.
In addition, a production unit is added, and the production batch is input by machine, so that the test results are more standardized and standardized
.
In terms of information security, three-level passwords are used to make information safe and reliable
.
The test control range includes: nominal capacity, core rod displacement, print setting, test, up, down, time, calibration, verification and other function settings
.
With the on-board printing test, the test load and sliding data (initial force, average force, maximum thrust) can be displayed in real time
.
The test results are automatically judged, and if they fail, the automatic buzzer alarm will be activated, and the test data and results will be printed out by the printer for analysis
.
2.
Test principle: This test measures the flow rate of water leaking through the entire vessel wall, or measuring the water leakage flow rate of a representative part of the vessel at 16 kPa (120 mmHg)
.
The test section must include all parts of the artificial blood vessel that are prone to leakage (such as the confluence of blood vessels
.
This test is suitable for all kinds of straight or crossed blood vessels
.
3.
Test Standard: YY0500-2021 4.
Technical Parameters: Operation Interface: Simplified Chinese/English Test Standard: YY0500-2021 Size: 580×420×530(mm) Power supply: AC90V-240V/50Hz (adaptive wide voltage) Machine power: 70W Programmable controller: PLC control system Touch screen: 7 inch Weiluntong color touch screen Force measuring mechanism: built-in Printer: Embedded Printer Overall Water Leakability/Leakage Test 1 Principle This test measures the flow of water leaking through the entire vessel wall, or a representative portion of the vessel at 16 kPa (120 mmHg ) under the water leakage flow
.
The test section must include all parts of the artificial blood vessel that are prone to leakage (such as the confluence of blood vessels)
.
This test is suitable for a variety of straight or intersecting vessels
.
2 Instrument Room temperature, clean, filtered water NOTE: Others, such as normal saline, may also be used 15YY 0500-2004/ISO 7198:1998 In order to place samples of a given inner diameter, a specific adapter is required
.
There must be a watertight seal between the sample and the adapter
.
The fitting device of the artificial blood vessel should be connected to the clamp, and the clamp can ensure that one end of the blood vessel can be freely extended when the blood vessel is pressurized
.
Grips shall be connected to a pressure control system capable of providing a water pressure of not less than 16.
0 kPa (120 mmHg)
.
Pressure measuring devices, eg, pressure transducers, scaled or standard pressure bars, are used to measure the pressure in the lumen of the vessel under test
.
Also consider taking measures to measure the milliliters of water seeping through the vessel wall, or collecting seepage at the junction of the sample
.
These can be achieved through the flow meter, the method of calculating the amount of discharged water and collecting the amount of leakage water
.
The test needs to be timed
.
Also calculate the length of the test portion of the artificial blood vessel from one end point to the other end point, in cm3.
Sampling should be in accordance with the requirements of Chapter 7
.
4 Test procedure Seal one end of the sample with a stopper or fold tightly, or roll up approximately 2 cm at one end and clamp to keep it watertight
.
Attach the inner surface of one end of the sample to a special adapter
.
Attach the adapter and vascular sample to the pressure generating device and the measurable fixture
.
Gradually increase the pressure in the blood vessels, remove the air remaining in the blood vessels, and make the pressure reach 16.
.
Scholar
.
3 kPa (120 mmHg ± 2 mmHg)
.
Pressure was maintained and leakage through the vessel wall was measured for 60 s
.
If the water collection method is appropriate, the leakage through the main body and branches of the vessel can be measured separately
.
5.
Expression of results The surface area of blood vessels and sections should be calculated, and the amount of water leakage should be expressed in milliliters per (min·square centimeter)
.
For the leakage of the joint, it should be expressed in milliliters per minute
.
6 Test report and additional description The test report shall include the mean and standard deviation of the water leakage of the blood vessel samples and the leakage of the joint, and the specified details
.
Instrument features This equipment is a testing equipment for testing the performance of the manufacturer's products
.
It is composed of programmable controller, touch screen, force sensor, transmission device, on-board printer, etc.
It provides Chinese and English menu display, and has man-machine dialogue to set various parameters and automatically run the test mode
.
In addition, a production unit is added, and the production batch is input by machine, so that the test results are more standardized and standardized
.
In terms of information security, three-level passwords are used to make information safe and reliable
.
The test control range includes: nominal capacity, core rod displacement, print setting, test, up, down, time, calibration, verification and other function settings
.
With the on-board printing test, the test load and sliding data (initial force, average force, maximum thrust) can be displayed in real time
.
The test results are automatically judged, and if they fail, the automatic buzzer alarm will be activated, and the test data and results will be printed out by the printer for analysis
.
2.
Test principle: This test measures the flow rate of water leaking through the entire vessel wall, or measuring the water leakage flow rate of a representative part of the vessel at 16 kPa (120 mmHg)
.
The test section must include all parts of the artificial blood vessel that are prone to leakage (such as the confluence of blood vessels
.
This test is suitable for all kinds of straight or crossed blood vessels
.
3.
Test Standard: YY0500-2021 4.
Technical Parameters: Operation Interface: Simplified Chinese/English Test Standard: YY0500-2021 Size: 580×420×530(mm) Power supply: AC90V-240V/50Hz (adaptive wide voltage) Machine power: 70W Programmable controller: PLC control system Touch screen: 7 inch Weiluntong color touch screen Force measuring mechanism: built-in Printer: Embedded Printer Overall Water Leakability/Leakage Test 1 Principle This test measures the flow of water leaking through the entire vessel wall, or a representative portion of the vessel at 16 kPa (120 mmHg ) under the water leakage flow
.
The test section must include all parts of the artificial blood vessel that are prone to leakage (such as the confluence of blood vessels)
.
This test is suitable for a variety of straight or intersecting vessels
.
2 Instrument Room temperature, clean, filtered water NOTE: Others, such as normal saline, may also be used 15YY 0500-2004/ISO 7198:1998 In order to place samples of a given inner diameter, a specific adapter is required
.
There must be a watertight seal between the sample and the adapter
.
The fitting device of the artificial blood vessel should be connected to the clamp, and the clamp can ensure that one end of the blood vessel can be freely extended when the blood vessel is pressurized
.
Grips shall be connected to a pressure control system capable of providing a water pressure of not less than 16.
0 kPa (120 mmHg)
.
Pressure measuring devices, eg, pressure transducers, scaled or standard pressure bars, are used to measure the pressure in the lumen of the vessel under test
.
Also consider taking measures to measure the milliliters of water seeping through the vessel wall, or collecting seepage at the junction of the sample
.
These can be achieved through the flow meter, the method of calculating the amount of discharged water and collecting the amount of leakage water
.
The test needs to be timed
.
Also calculate the length of the test portion of the artificial blood vessel from one end point to the other end point, in cm3.
Sampling should be in accordance with the requirements of Chapter 7
.
4 Test procedure Seal one end of the sample with a stopper or fold tightly, or roll up approximately 2 cm at one end and clamp to keep it watertight
.
Attach the inner surface of one end of the sample to a special adapter
.
Attach the adapter and vascular sample to the pressure generating device and the measurable fixture
.
Gradually increase the pressure in the blood vessels, remove the air remaining in the blood vessels, and make the pressure reach 16.
.
Scholar
.
3 kPa (120 mmHg ± 2 mmHg)
.
Pressure was maintained and leakage through the vessel wall was measured for 60 s
.
If the water collection method is appropriate, the leakage through the main body and branches of the vessel can be measured separately
.
5.
Expression of results The surface area of blood vessels and sections should be calculated, and the amount of water leakage should be expressed in milliliters per (min·square centimeter)
.
For the leakage of the joint, it should be expressed in milliliters per minute
.
6 Test report and additional description The test report shall include the mean and standard deviation of the water leakage of the blood vessel samples and the leakage of the joint, and the specified details
.
