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J-Pac Medical: How Pre-Validated Medical Device Packaging Complies with ISO Standards
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There is a lot of excitement in the medical device packaging industry about pre-validated packaging. Using pre-validated packaging may reduce time to market and minimize expense related to package development and validation. However, international standards defining medical device and healthcare packaging systems validation requirements are complex and involve several levels of materials selection, design qualification, and process validation as well as design controls. Pre-validated packaging may not comply with all the requirements depending on the specific device involved. Nevertheless, pre-validated packaging can be a useful strategy if properly implemented by the sterile packaging manufacturer and device packager within the framework of these standards. The purpose of this paper is to clarify how medical device manufacturers (MDMs) can ensure their pre-validated packaging systems will meet these requirements.
Sterile packaging systems need to ensure the sterility of their contents until they are opened for use. The sterile barrier system (SBS) must also be designed to ensure aseptic presentation at the point of use. ISO 11607 (part 1 and part 2) is the global standard governing packaging for terminally sterilized medical devices. ISO 11607-1 defines requirements for SBS materials selection, and their design and testing. ISO 11607-2 defines manufacturing critical process validation requirements for forming, sealing, and the assembly processes. Both parts of ISO 11607 were designed to meet the Essential Requirements of the European Medical Device Directives, making them requirements for MDM’s in the EU or that sell into the EU.
Protective Packaging: The configuration of materials designed to prevent damage to the sterile barrier system and its contents from the time of their assembly until the point of use. Examples include corrugated boxes, dunnage or additional packaging inside a sealed tray or pouch that prevents the medical device from damaging the sterile barrier system. For example, while a package design can be tested to ensure it maintains a sterile barrier, the enclosed device must not damage the SBS during shipping and handling. This is usually demonstrated by simulated distribution testing of the packaging system.
Preformed Sterile Barrier System: A sterile barrier system that is supplied partially assembled for filling and final closure or sealing. Examples of these include porous and nonporous chevron pouches, header and patch bags. These are typically purchased from packaging suppliers partially assembled and used during final packaging by making a final closure seal. While a thermoformed tray does not technically constitute a pre-formed sterile barrier system, the tray manufacturing process should be validated.
Packaging System: The combination of the sterile barrier system and protective packaging. The key concept here is that both the device and the sterile barrier must be protected from damage.
The combination of the sterile barrier system and the protective packaging forms the packaging system. The entire packaging system must be designed to protect both the device and the sterile barrier itself during shipping, handling, and storage. A common cause of packaging failure occurs because the device inside the package creates forces during shipping that can compromise the sterile barrier materials or seals. Because these forces are unique to the specific device it is unlikely pre-validated packaging can negate the need for physical and climactic stress testing data for the device in question.
ISO 11607 highlights the major requirements that must be accomplished to properly validate terminally sterilized medical device packaging. The following are some of the major highlights of those requirements.
MDM’s should ask several important questions of their SPM’s or contract packager to ensure they have the correct documentation for their design history file:
How do we support the claim that the packaging system is adequate to protect the sterile barrier as well as our medical device during shipping and handling? What rationale is documented that our device will be adequately protected and will not cause damage to the sterile barrier system during handling? In this case, the only way to claim pre-validated packaging is for the SPM or packager to have tested similar products sterilized in the same modality that could be used as rationale to justify not repeating the test for the MDM’s specific product. There is some risk for the MDM that their regulatory body may reject this rationale on the grounds that the MDM’s device is unique and cannot be included in a “family” of similar products. In this case, the packaging system design qualification performance testing must be repeated.
Pre-validated sterile packaging is a novel concept that, if properly executed, can help MDM’s reduce expense and improve time to market. However, the ISO 11607 standard (Parts 1 and 2) is complex and cite three key components of a “validated” packaging system. (A) The design and development of the packaging system which includes material selection, design and packaging system design qualification testing, (B) qualifying or validating or providing proof of the stability of the SBS materials and seals and (C) SBS sealing process validation.
The MDM’s unique devices, sterilization cycle, distribution environment, and manufacturing processes often require pre-validated packaging solutions to undergo additional qualification and validation testing to satisfy regulatory requirements. MDM’s should ask specific questions to understand how pre-validated packaging meets these requirements and clearly identify any additional testing that may be required. Finally, MDM’s must ensure that all validation data is maintained in their design history files, as they are ultimately responsible.
ISO 11607-1:2006/(R) 2010 Packaging for terminally sterilized medical devices—Part 1: Requirements for materials, sterile barrier systems, and packaging systems and ISO 11607-1: 2006/A1: 2014 Packaging for terminally sterilized medical devices – Part 1: Requirements for materials, sterile barrier systems, and packaging, Amendment 1
ISO 11607-2:2006/(R) 2010 Packaging for terminally sterilized medical devices—Part 2: Validation requirements for forming, sealing and assembly processes and ISO 11607-2: 2006/A1: 2014 Packaging for terminally sterilized medical devices – Part 2: Validation requirements for forming, sealing, and assembly processes, Amendment 1
ANSI/AAMI/ISO TIR16775: 2014, Technical Information Report, Packaging for terminally sterilized medical devices-Guidance on the application of ISO 11607-1 and ISO 11607-2.