Plasma sterilizer: mechanism of action, application, model Sterrad
Plasma sterilizers treat instruments with hydrogen peroxide vapor and its plasma at a temperature of 36 ° C to 60 ° C. Such devices are placed in central sterilization or operating rooms.
This low-temperature treatment has replaced the sterilization with toxic vapors of ethylene oxide or formaldehyde and occupies an average of two positions in value.
Mechanism of action
The principle of operation of the sterilizer is as follows:
- The first chamber converts the peroxide into vapor.
- The steam passes into a pre-evacuated chamber with a biocidal medium, where it acts on microbes and spores.
- Diffusion occurs.
- Starting a high-voltage discharge forms plasma and active radicals.
- During plasma operation, the pressure changes.
- The chamber is vacuumed again.
- Plasma acts on microorganisms.
- Normal pressure is set.
- Processed objects are unloaded from the camera.
The strongest substance is concentrated at the beginning of sterilization. Then this figure gradually decreases due to convection and fluid absorption.
Peroxide concentration 0,1 ml per dm3 capacity reduces the level of accumulation of dangerous organisms on 5-6 units per 36 min.
Plasma sterilizers are used against various bacilli and candida. The treatment time is determined by the concentration and oxidizing ability of the agent.
machined tools
The device processes the equipment of the following branches:
- surgery and microsurgery;
- traumatology;
- dentistry (except for pines);
- ophthalmology
He sterilizes catheters, cables and devices, emitters, fiber optics, tool handles, respiratory circuits.
Plasma sterilizer is suitable for processing material with the following features:
- heterogeneity (syringes, implants);
- thermolability (plastic);
- baseness.
The device sterilizes hard-to-reach areas of medical instruments, example, internal channels to 1 mm in diameter and up to 250 cm.
Sterrad
Among the modern plasma sterilizers known "Sterrad 200", able to process 150 liters per 75 minutes. Has the following characteristics:
- Two sterilization cycles: 75 minutes and 105 minutes.
- Control with a color touch screen.
- One or two doors at the request of the customer.
- Barcode reader.
- Connection to the hospital network: The data transferred from the device is stored in the memory of the network or stand-alone computer, to track flushing, drawing a barcode, sterilization and storage of each product.
- Hydrogen peroxide concentration measurement system every second of the cycle.
- Built-in wheels.
"Sterrad 200" does not damage products sensitive to humidity and strong heating with thin and sharp working areas, increases their wear resistance and reduces the need for sharpening, using agent at 46? WITH. He leaves no traces, decomposing into water and oxygen.
Additional aeration and water supply systems or special conditions for cooling and ventilation of machined tools are not required.
