1, the meaning
Sterile drainage tube is a commonly used clinical medical device. It has a wide range of different functions and can be applied to catheterization. It can also be used to collect pus in wounds, brain cavities, thoracic cavities, gastrointestinal tracts, biliary tracts, or in body cavities. Blood, liquids, and liquids are directed outside the body to prevent postoperative infection and affect wound healing. Drainage tube body and the joints of the components should maintain a high degree of sealing, otherwise it may lead to drainage is not smooth, or the sterile wound environment caused by wound infection, if the gas is introduced into the human body Severe consequences such as pneumothorax are prone to occur, and leakage of the draining fluid causes problems such as cross-infection. Therefore, it is one of the preconditions for the normal use of the drainage tube that the components and connections of the drainage tube have no leakage and good sealing performance.
Figure 1 Various types of drainage tubes
2, reference standards
Sterile drainage tube can refer to the product standard YY 0489-2004 "disposable sterile drainage catheter and auxiliary equipment", the standard provides for the detection of sterile drainage tube sealing reference standard GB/T 15812.1-2005 "non- Intravascular catheter - Part 1: General performance test method".
3, test sample
This article takes a sterile drainage tube manufactured by a company as an example to test its sealing performance.
4, test equipment
Labthink MFY-01 Sealing Tester is a testing device that uses the negative pressure method as the test principle. This device is used to test the sealing performance of the sterile drainage tube.
Figure 2 MFY-01 Seal Tester
4.1 Equipment Principle
During the test, the sample is placed in the vacuum chamber of the equipment, the vacuum chamber pump is turned on, and the vacuum chamber of the equipment is evacuated, so that the sample immersed in the vacuum chamber water generates a pressure difference between inside and outside, and the leakage of the sample is checked. In order to determine the sealing performance of the sample; or through the vacuum chamber vacuum, make the sample produce internal and external pressure difference, by observing the expansion of the sample and the release of the vacuum after the recovery of the shape of the sample to determine the sealing performance of the sample.
4.2 Application
l Applicable to the overall leak test of plastic bags, bottles, tubes, cans, boxes, etc.
l Suitable for the overall leak test of glass bottles, tubes, cans, boxes, etc.
l Suitable for the overall leak test of metal bottles, tubes, cans, boxes, etc.
l Applicable to the sealing test of paper-plastic composite bags and boxes.
l Meet the requirements of the national standard GB/T 15171 and the American standard ASTM D 3078.
4.3 Equipment Parameters
l The vacuum is 0 ~ -90 KPa.
l The effective size of the vacuum chamber is available in three types: 270 mm (diameter) × 210 mm (height), 360 mm (diameter) × 585 mm (height), and 460 mm (diameter) × 330 mm (height) .
l The equipment adopts digital preset test vacuum and vacuum retention time to ensure the accuracy of test data.
l Automatic constant pressure replenishment technology to further ensure that the test can be performed under preset vacuum conditions.
l The equipment adopts a professional software system to support automatic backflush unloading and automatic end of test functions to ensure the smooth progress of the test process.
5, the test process
(1) Assemble the drain tube assembly as required and close the open end.
(2) Place the sample in a vacuum chamber.
(3) Set the vacuum according to product requirements and set the pressure holding time to 120 s.
(4) Click the start button to start the test. Observe carefully whether there are any continuous bubbles on the surface of the sample during the vacuum and pressure holding process. After the pressure holding time is over, the test is automatically ended.
6, test results
The aseptic drainage tube samples tested herein showed no leakage at a vacuum of -90 KPa.
7. Conclusion
The sealing performance of sterile drainage tube is an important performance index related to whether it is safe to use or not. In this paper, Labthink MFY-01 Sealing Tester was used to test the sealing performance of sterile drainage tube, and the operation of the equipment is simple. The high degree of intelligence, accurate and reliable test results, is a test equipment that can quickly and efficiently test the sealing performance of the sample. The leading domestic packaging testing equipment manufacturing industry - Jinan Languang Electromechanical Technology Co., Ltd. can provide professional and accurate packaging testing equipment, and can provide intimate, high-quality packaging testing services, covering the packaging performance of the barrier, flexibility, Impact resistance, puncture resistance, heat sealing performance, sealing performance, solvent residue, evaporation residue, etc., related equipment information and service content you can consult. The more you understand, the more you trust! Labthink is willing to take this opportunity to enhance technical exchanges and cooperation with enterprises and institutions in the industry.