Wagner Sterilsysteme

The SteriSet System

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Untitled Document

	The SteriSet System	VALVE CONCEPT
		SteriSet's valves are electrolytically polished stainless steel disks of a certain shape which, in the absence of a pressure difference, are sealed together by a spring. So closed they form an effective barrier against microbial penetration during hospital storage and handling, but when exposed to the changes in pressure during a sterilization cycle, the discs are pushed open and allow passage of gases with virtually no resistance to flow (a filter by comparison has a greater resistance to flow) until pressure equalization is achieved.
	The valve members (green and blue in the below pics.) are assembled in the inner protected lid of SteriSet containers
	Red = outer environment White =between the two lids Green=OUTER valve member Blue = INNER valve member Yellow = inside the container
	When pressure is raised, steam travels trough the annulous gap between the two lids, penetrates the perforated OUTER VALVE MEMBER, pushes the INNER VALVE MEMBER open against his inner spring, then travels trough the now open pathway into the container ...
	When pressure drops (vacuum), steam pushes the INNER and OUTER VALVE MEMBER upwards against both springs in the system, travels through the now open pathway(s) and finally escapes through the annulous gap between the two lids from the container...
	In the absence of a difference of pressure the spring loaded valve members snap back to the sealed status...
		Sealed: the polished steel disks contact their counterpart - forming a very long and narrow gap (which is not gas tight, but a effective barrier against microbial penetration during hospital storage and handling).
		The SteriSet valve system is a example for a technologically advanced system for supply of sterile goods to the OR. It complies to the relevant standards CEN (European Standard on packaging materials for sterilization) 868-1 and –8 (former) DIN 58 952 / 58 953 (German Standard Institute) CE-mark declared (= conformity to the European Medical Device Directive) FDA (US Food&Drug association) 510K Pre-marketing Notification for class II device on file. The VALVE system increases the safety of handling containers (no exchange of filters needed), is truly cost effective (no disposables) to use and designed for being truly reusable. During the serviceable life (of typical 10 years) the system needs no other special care or maintenance as the regular control for absence of corrosion and physical integrity of the general shape - as it is also done with other comparable systems. (Use acccoring instructions provided)