Medical one-way valve, an important accessory of medical devices

I believe everyone is familiar with industrial one-way valves, which mainly prevent liquid backflow in pipelines. However, is the function of medical one-way valves the same as industrial one-way valves? This article takes you on a closer look.

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What is a medical one-way valve

What is a medical one-way valve? Medical one-way valves are supporting accessories for some medical devices. At present, the vast majority of medical one-way valves used on the market are composed of valve bodies, valve covers, valve core caps, metal springs, and sealing gaskets.

The rear end of the valve body has a rear through port, and the front end of the valve body has a front through port. The valve body has a through channel between the rear through port and the front through port, so that the valve body can be connected back and forth. The valve core can achieve one-way flow through the channel through axial movement.

The existing medical one-way valves generally use springs to provide pre compression force to achieve one-way flow function. The liquid flows from bottom to top and relies on pressure to lift the valve disc controlled by the spring. After the pressure disappears, the spring force presses the valve disc down, causing channel blockage and preventing liquid reflux.

In addition, some medical one-way valves use pressure caps for pre compression. When subjected to excessive force and the fastening method of the pressure caps is not reliable, it is easy to cause the pressure caps to collapse, resulting in safety hazards due to functional failure.

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The application of medical one-way valves

Medical one-way valves are widely used in scenarios such as hemodialysis, extracorporeal circulation, and liquid teeth cleaning. They are used in medical products such as indwelling needles, tracheal intubation tubes, catheters, laryngeal masks, and anesthesia masks to control the one-way flow of liquid.

For example, the injection one-way valve installed in front of the syringe can effectively control the flow of liquid or gas, and when using the one-way valve to extract the medicine at high speed, no bubbles are generated. It can also seal in reverse under high pressure. It is possible to achieve aseptic and rapid infusion, extraction of fluid accumulation, blood transfusion, or separation and exhaust of medication for patients.

When clinical medication is used, a combination of multiple drugs is often used for infusion, which needs to be replaced regularly. The use of medical one-way valves can not only reduce the number of needle withdrawals and insertions, avoid liquid leakage, greatly reduce patient pain, but also make changing drugs time-saving and labor-saving. At the same time, it saves materials, is safe, reliable, and environmentally friendly.

From a medical perspective, medical one-way valves have good sealing properties and can reduce the risk of infection and air ingress. On different medical equipment and instruments, there are multiple choices of structures and materials for various medical one-way valves, which have good human affinity, convenient installation, and diverse structures, meeting the needs of various medical equipment.

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Assembly of medical one-way valves

As an important and delicate accessory of medical consumables, the production and assembly process of medical one-way valves should be very strict and precise. Hengxingli fully automatic one-way valve assembly machine can achieve automatic feeding and precise assembly of various parts.

The machine adopts servo control and high-speed production throughout the process, with a yield rate of up to 99% and strong compatibility. It can be used for the assembly of various specifications of one-way valves. Through high-precision airtightness testing, it can automatically detect good products, ensuring product quality.

In the short term, elective surgeries affected by the epidemic in the past two years will gradually recover, and the demand for surgical medical consumables will increase accordingly. In the long run, with the development of modern technology, the increasing average life expectancy of the world population, and the intensifying trend of aging, the demand for medical consumables in the fields of surgery, treatment, first aid, and nursing will not decrease.

Therefore, the application prospects of medical one-way valves are very broad, and the full automation of production and assembly of medical one-way valves will also become an inevitable trend.