Artificial vascular overall permeability tester Pressure sensor: 0-50kpaN Shanghai Chengwei

YY0500-2021 Artificial Blood Vessel Integral Water Leakage Tester Water Content Osmotic Pressure Test First, instrument features This equipment is a testing equipment
that inspects the performance of the manufacturer's products.

It is composed of programmable controller, touch screen, force value sensor, transmission device, airborne printer, etc.
, providing Chinese and English menu display, with man-machine dialogue to set various parameters automatically running test mode
.

In addition, production is added, and the production batch machine hits the input, 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, mandrel displacement, print settings, testing, upstream, downstream, time, calibration, verification and other functional settings
.

With the on-board print test, the test load and sliding data (starting force, average force, maximum thrust) can be displayed in
real time.

Automatic judgment of test results, automatic beep alarm is activated if it is unqualified, and the printer prints out the test data and results for analysis
.

Second, the test principle: This test measures the flow of water that leaks through the entire blood vessel wall, or the water leakage flow
of the representative part of the blood vessel at 16 kPa (120 mmHg).

The test section must include all parts of the artificial vessel that are susceptible to leakage (e.
g.
, at the junction of the vessels
).

This test is indicated for a variety of straight or crossed blood vessels
.

Third, test standard: YY0500-2021 four, technical parameters: operation interface: Chinese Simplified / English test standard: YY0500-2021 pressure sensor: 0-50kpaN (test can be set by software) Timer: touch screen display fixture: 1 set of product net weight: 15kg dimensions: 760×460×600 (mm) power supply: AC90V-240V/ 50Hz (adaptive wide voltage) Whole machine power: 70W programmable controller: PLC control system touch screen: 7 inch Veyron color touch screen force measurement mechanism: built-in printer: embedded printer Overall water leakage / leakage test 1 Principle This test is to measure the flow of water leaking through the entire blood vessel wall, or to measure the water leakage flow
of the representative part of the blood vessel at 16 kPa (120 mmHg).

The test section must include all parts of the artificial vessel that are susceptible to leakage (e.
g.
, at the junction of the vessels
).

This test is indicated for a variety of straight or crossed blood vessels
.

2 Instruments at room temperature, clean, filtered water injection: Others, such as normal saline, can also be used 15YY 0500-2004/ISO 7198:1998 In order to place a sample of a given inner diameter, a specific adapter
is required.

The sample and adapter must be sealed and impermeable
.

The fitting device of the artificial blood vessel is connected to the clamp, which can ensure that one end of the blood vessel can be freely extended
when the pressure is applied to the blood vessel.

The fixture should be connected to a pressure control system
that provides a water pressure of not less than 16.
0 kPa (120 mmHg).

Pressure measuring devices, e.
g.
pressure sensors, with rulers or standard pressure columns, are used to measure the pressure
of the lumen of the vessel during the test.

Also consider taking steps to measure the number of milliliters of water seeping through the walls of blood vessels, or to collect the amount
of water seeping through the junction of the sample.

These can be achieved
with the flowmeter, calculating the amount of water discharged and collecting the amount of seepage water.

Tests need to be timed
.

At the same time, the length of the test section of the artificial blood vessel from one endpoint to another is also calculated, and the sampling for cm3 should be in accordance with the requirements
of Chapter 7.

4 The test procedure seals one end of the sample with a stopper or tight folding, or rolls up about 2 cm at one end and clamps it tightly to keep it leak-free
.

Fix the inner surface of one end of the sample to a special adapter
.

Connect the adapter and vascular sample to the pressure generating device and measurable fixture.


Gradually increase the pressure in the blood vessels, eliminate the remaining air in the blood vessels, so that the pressure reaches 16.

。
Taxi.


3 kPa (120 mmHg 2 mmHg).


Maintain pressure and measure the amount
of leakage that flows through the blood vessel wall within 60 s.

If the amount of water is collected properly, the amount of leakage through the vascular body and the branches can be measured separately
.

5 Results The surface area of the blood vessels and cross-sections is calculated, and the leakage of water is expressed in milliliters per (minutes square centimeters
).

For the amount of leakage of the conjugate, it should be expressed
in milliliters per minute.

6 The test report and additional instructions the test report shall include the average and standard deviation of the water leakage amount and the joint leakage amount of the vascular sample, and the specified details are described
.