Medical microwave ablation needle rigidity and toughness testerYY0899-2020 is developed based on the standard "General Requirements for Accessories of Medical Microwave Equipment YY0899-2020", mainly used to determine the rigidity and toughness performance of medical microwave ablation needles. The following is a detailed introduction about the tester:

1、 Test purpose

Medical microwave ablation needles need to withstand various mechanical stresses during clinical use, such as bending, twisting, etc. Therefore, through the testing of the rigidity and toughness tester, the mechanical performance of the microwave ablation needle under specific stress conditions can be evaluated to ensure that it will not fracture or deform excessively in practical use, thereby ensuring the safety and effectiveness of the treatment.

2、 Testing principle

The tester simulates the mechanical loads that a microwave ablation needle may encounter during actual operation, such as bending, twisting, etc., by applying specific forces or stresses. At the same time, sensors are used to monitor the deformation and load-bearing limit of the needle body in real time, in order to evaluate its ability to withstand these stresses.

3、 Composition of testing equipment

The medical microwave ablation needle rigidity and toughness tester mainly consists of a fixture system, force sensor, angle sensor, and control system. The fixture system is used to fix the microwave ablation needle, ensuring stable needle position and angle during the testing process; Force sensors are used to apply force and monitor the stress of the needle body in different directions; Angle sensors are used to measure the bending or twisting angle of the needle body; The control system is used to set test parameters, record test data, and control the testing process.

4、 Testing method

1. Rigid testing:

• Use a fixture to hold the handle end of the microwave ablation needle.

• Apply pressure vertically at a speed of not less than 1mm/min at a certain distance (such as 10cm) from the clamping position in the head direction.

• Record the downward displacement of the test head relative to the initial position of the microwave ablation needle, and determine whether it meets the standard requirements.

2. Resilience testing:

• Fix the microwave ablation needle in the fixture system of the tester, ensuring that both ends of the needle body are stable and not loose.

• According to the required testing items, set the type and magnitude of applied force, such as bending force, torsional force, etc.

• Set the range of bending or twisting angles to ensure that the testing process can accurately simulate the stress situation in actual operation.

• Start the testing instrument, gradually apply the set stress, and record the reaction of the needle body under different stresses.

5、 Test result judgment

• Rigidity test: Determine whether the rigidity of the microwave ablation needle meets the standard requirements based on the value of the downward displacement.

• Resilience testing: Observe and record the reaction of the needle body under different stresses, such as whether plastic deformation or fracture occurs. Based on the test results, determine whether the toughness of the microwave ablation needle meets the standard requirements.

6、 The application scope of the tester

The medical microwave ablation needle rigidity and toughness tester is widely used in medical device manufacturing enterprises, quality inspection institutions, and scientific research units to evaluate the rigidity and toughness performance of medical microwave ablation needles, ensuring that the product quality meets relevant standards and regulations.

7、 Precautions

1. During the testing process, it should be ensured that the sensors and measurement system of the tester can accurately capture and record data to avoid errors.

2. Strictly follow the operating instructions and testing requirements of the tester to ensure the accuracy and reliability of the test results.

3. Before testing, the microwave ablation needle should be carefully inspected to ensure that it is not damaged or contaminated, and its specifications and model should be recorded.

In summary, the YY0899-2020 medical microwave ablation needle rigidity and toughness tester is an important tool for evaluating the mechanical performance of medical microwave ablation needles, and its test results are of great significance for ensuring the safety and effectiveness of the product.