| http://www.w3.org/ns/prov#value | - It is known in the art to have permanent blood clot filters, temporary blood clot filters and blood clot filters which can be converted from being a filter to a non-filtered state without requiring removal thereof. [0003] There are known advantages and drawbacks to each of these three types of filters and each has its appropriate role. [0004] A large number of different blood clot filter designs a
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