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Description / Abstract:
This part of ISO 25539 specifies requirements for vascular
stents, based upon current medical knowledge. With regard to
safety, it gives requirements for intended performance, design
attributes, materials, design evaluation, manufacturing,
sterilization, packaging and information supplied by the
manufacturer. It should be considered as a supplement to ISO 14630,
which specifies general requirements for the performance of
non-active surgical implants.
NOTE Due to the variations in the design of implants covered by
this part of ISO 25539 and in some cases due to the relatively
recent development of some of these implants (e.g. bioabsorbable
stents, polymeric stents), acceptable standardized in vitro tests
and clinical results are not always available. As further
scientific and clinical data become available, appropriate revision
of this part of ISO 25539 will be necessary.
The scope of this part of ISO 25539 includes vascular stents
used to treat vascular lesions or stenosis, or other vascular
abnormalities. These devices might or might not incorporate surface
modifications of the stent such as drug and/or other coatings.
Stents covered with materials that significantly modify the
permeability of the uncovered stent are within the scope of ISO
25539-1. The stent design might dictate the need to address
functional requirements identified in both ISO 25539-1 and this
part of ISO 25539.
Delivery systems are included in this part of ISO 25539 if they
comprise an integral component of the deployment of the vascular
stent.
Procedures and devices used prior to the introduction of the
vascular stent, such as balloon angioplasty devices, are excluded
from the scope of this part of ISO 25539.
Some pharmacological aspects of drug-eluting stents are
addressed in this part of ISO 25539, but this part of ISO 25539 is
not comprehensive with respect to the pharmacological evaluation of
drugeluting stents.
Degradation and other time-dependent aspects of bioabsorbable
and polymeric stents and coatings are not addressed by this part of
ISO 25539.
With the exception of sterilization, this part of ISO 25539 does
not address requirements for the evaluation of animal tissue
products.