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US 9,308,072 B2Granted
Biomedical filter
OwnerNilesh Balarinventor
Life of this patent
Estimating the term…
Abstract
A drug-eluting medical filter having a conically shaped wire frame with a circular base and a plurality of bioabsorbable prongs extending at various positions around the periphery of the base toward a common apex. The prongs have a variable thickness along their length and contain bioactive material, such as heparin or other anti-platelet agent, etc. The bioactive material is varied in concentration along the length of the prongs depending on the need by the patient, and a protective or other coating can be applied on any portion of the frame and/or prongs.
Claims8
A biomedical filter comprising:
- a wire frame including an undulating ring having a plurality of alternating struts and apices;
- a plurality of wire segments, spaced around and attached to the periphery of the ring and oriented in a direction such that one end of each of the segments points to a common apical point;
- a plurality of projecting substantially conically shaped prongs made of a bioabsorbable matrix material, each prong having a base attached to a respective wire segment and each having a distal tip;
- at least a portion of each prong including a bioactive material contained within at least a portion of the prong matrix,
- wherein each prong increases continuously in thickness in a substantially linear manner along the entire length of each prong, such that each individual prong structure conforms substantially to a conical shape,
- wherein after the filter is implanted, the bioactive material elutes at a predetermined rate that is dependent on the dimensions and number of prongs and the concentration profiles of the bioactive material within the matrix material of the prongs.
3 more elements
Dependencies are inferred from the claim text.