Artificial blood vessel compression rupture strength tester is a high-performance testing equipment of QINSUN instrument. It is composed of programmable controller, touch screen, force sensor, transmission device, on-board printer, etc. It provides Chinese and English menu display, with human-machine dialogue to set the parameters to run the test mode automatically. Another additional production unit, production batch machine typing input, so that the test results are more standardized and standardized. Information security using three-level password, so that information security is reliable. Test control range includes: nominal capacity, core rod displacement, print setting, test, upstream, downstream, time, calibration, calibration and other functional settings. With the on-board printing test can real-time display test load, sliding sex data (starting force, average force, Z large thrust). Automatic judgment for the test results, failure to start the automatic beep alarm, and print out the test data and results by the printer for analysis.
To determine the pressure of water penetration through blood vessels, the instrument should include devices that can keep the sample sealed until leakage occurs. A suitable pressure transducer is also required.
Third, the test standard: YY0500-2021, GB/T7742
IV, Technical parameters.
Operation interface: Simplified Chinese/English
V. Test standard: YY0500-2021,GB/T7742
Pressure sensor: 0-10MPA (test can be set by software)
Fixture: Luer joint or according to customer's choice
Time timer: touch screen display
Clamp: 1 set
Safety cover 1 set:1m
Product net weight: 15kg
Power source: AC90V-240V/50Hz (adaptive wide voltage)
Whole machine power: 70W
Programmable controller: PLC control system
Touch screen: 7-inch Velcom color touch screen
Force measuring mechanism: built-in
Printer: Embedded printer
The sample is dilated by any of the following methods:
a) filling the vessel directly with fluid;
b) placing the blood vessel outside the balloon to be constantly measured by the changing pressure added to the balloon until the sample ruptures.
The apparatus should include a system with the ability to measure and record pressure values greater than the rupture of the sample, either
a) An apparatus that provides a steady supply of hydraulic or pneumatic pressure to the sample to its effective length;
b) an airbag expansion device as described.
Note: For any method, some apparatus is required to seal the edges of the sample being measured.
Samples should be taken upon request.
4 Test procedure
Carefully place the balloon into the artificial vessel sample or connect the sample directly to the pressurized instrument
Note: Some lubricant can be applied to the balloon to facilitate smooth insertion. Connect the pressure measurement device to record the pressure values in the vessel. Pressurize the sample as steadily as the liquid or gas in the sample. Measure the pressure in the vessel. Record the rate of pressurization and the pressure value when the vessel sample ruptures or when the test cannot be continued.
5 Presentation of results
The rate of pressurization is recorded in kilopascals per second and the rupture pressure is recorded in kilopascals. The mean and standard deviation of the rupture strength are calculated and recorded.
6 Test Report and Additional Notes
The test report should include the mean and standard deviation of the rupture strength of the vessel sample
Additional instructions for the artificial vessel pressurization rupture strength tester should include documentation of the test method and rate of pressurization.