Assertion: filter | /r/HasProperty | left in place
Facets:
value: as permanent filters
type: MANNER
value: permanently
type: MANNER
Source sentences:
text: Newer filters, called optionally retrievable filters, may be left in place permanently or have the option to potentially be removed from the blood vessel later.
text: These filters can be left in place as permanent filters, but many filters can be removed even after being in place for several years.