Injection Needle Tester - Wikipedia

The medical injection needle tester is a common testing device for medical devices. It is mainly used to inspect the quality and performance of injection needles to guarantee the safety and effectiveness of injection procedures. The basic working principle of the medical injection needle tester is to analyze and measure multiple parameters including the dimension, quality, strength and flow rate of injection needles via mechanical and electrical testing methods for inspection and evaluation. This article introduces the working principle, application effect and operation procedure of the medical injection needle tester.

Working Principle

The medical injection needle tester adopts two main testing modes: mechanical testing and electrical testing.

Mechanical testing detects physical and mechanical properties by measuring indicators such as strength, hardness and stiction force of needle tips and catheters, as well as parameters including the shape and dimension of needle heads. Common test methods include tensile resistance test, cutting test, compression test, flow test and so on.

Electrical testing assesses the quality and safety of needle tips by measuring parameters such as resistance, capacitance, current and voltage in the area of injection needles. Electrical testing can be divided into DC electrical testing and AC electrical testing. Its main test methods include active resistance test, high-frequency inductance test, inverter test, etc.

Application Effect

Thanks to its high accuracy, fast testing speed and wide measurement range, the medical injection needle tester is widely used in pharmaceutical manufacturing, hospitals, centers for disease control and other institutions. Its main application scope covers the production and inspection of medical devices and consumables such as medical syringes, injection needles, fluid preparation sets and infusion sets.

The test results help ensure product quality and safety, greatly improving the qualification rate and safety level of medical device manufacturing.

Operation Procedure

To operate the medical injection needle tester, prepare test samples, testing equipment, test software and other tools in advance. The specific operation procedure is as follows:

1. Prepare test samples, including medical devices and consumables such as syringes, injection needles, fluid dispensers and infusion sets.

2. Place the test sample on the testing station of the instrument, and adjust the position and posture of the sample according to actual requirements.

3. Launch the test software, select test items as required, and calibrate the initial state and parameters of the tester.

4. Perform the test: fix the sample as prompted and start the tester. During the test, some test parameters and settings can be adjusted as needed to improve test performance and accuracy.

5. Display of test results: the results will be shown on the software interface, including values, units, test judgment and status prompts of each parameter.

6. Result analysis and storage: test results can be printed directly or exported and saved via USB flash drive for analysis and statistics.

This article introduces the working principle, application and operation method of the medical injection needle tester, serving as a reference for understanding this equipment. In medical device manufacturing and healthcare services, the quality and performance of injection needles are closely related to patients’ health and life safety. The application of medical injection needle testers provides solid technical support and guarantee for the development of the pharmaceutical industry and patient care.