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US 8,475,488 B2Granted
Retrievable blood clot filter
AssigneeAngioDynamics, Inc.
InventorsWilliam A. Cartier, Theodore J. Beyer, William M. Appling, Giorgio di Palma
Life of this patent
Estimating the term…
Abstract
A compact retrievable blood clot filter has a filter section, a releasable lock and an alignment section connected to the filter section. Alignment ribs of the alignment section have releasable upstream ends that are locked to the filter by the releasable lock. The releasable upstream ends of the alignment ribs are capable of being released from the releasable lock so that during retrieval of the filter, the alignment ribs can slide through the endothelial tissue that may have grown around the alignment ribs.
Claims42
A retrievable blood clot filter comprising:
- a filter section having a plurality of filter legs;
- a releasable lock;
- and
- an alignment section coupled to the filter section, a shaft positioned along a longitudinal axis of the alignment section and coupled to both the alignment section and the filter section, the alignment section is longitudinally spaced from the filter section in a non-overlapping manner, the alignment section having a plurality of alignment ribs having releasable upstream ends releasably coupled by an interference friction fit to the releasable lock, the releasable lock capable of releasing at least one releasable upstream end of the alignment ribs in response to a longitudinal force applied to the at least one releasable upstream end during retrieval of the retrievable blood clot filter by retrieval device, the released upstream end of the alignment rib being a free end, wherein the alignment section is self expandable into a deployed state while the releasable upstream ends are locked by the releasable lock.
1 more element
A retrievable blood clot filter comprising;
- a conical filter section having a filter hub and a plurality of filter legs having downstream ends coupled to the hub and upstream ends that extend radially outwardly;
- a releasable lock coupled to the filter hub;
- and
- an alignment section coupled to the conical filter section, a shaft positioned along a longitudinal axis of the alignment section and coupled to both the alignment section and the conical filter section, the alignment section longitudinally spaced from the conical filter section in a non-overlapping manner, the alignment section having an alignment hub and a plurality of alignment ribs having downstream ends coupled to the alignment hub and releasable upstream ends releasably coupled by an interference friction fit to the releasable lock, the alignment ribs extending radially outwardly from the downstream ends and then further extending radially inwardly, wherein the releasable lock is capable of releasing at least one releasable upstream end of the alignment ribs in response to a longitudinal force applied to the at least one releasable upstream end of the alignment ribs during retrieval of the retrievable blood clot by a retrieval device, the released upstream end of the alignment rib being a free end, wherein the alignment section is self expandable into a deployed state while the releasable upstream ends are locked by the releasable lock.
1 more element
A retrievable blood clot filter having a longitudinal axis comprising:
- a filter section having a plurality of filter legs;
- an alignment section having a plurality of alignment ribs and being spaced from the filter section in a non-overlapping manner along the longitudinal axis, a shaft positioned along a longitudinal axis of the alignment section and coupled to both the alignment section and the filter section;
- and
- a releasable coupler positioned between the filter section and the alignment section, the releasable coupler releasably holding the upstream ends of the alignment ribs by an interference friction fit, the releasable coupler capable of releasing at least one releasable upstream end of the alignment ribs, the released upstream end of the alignment ribs being a free end, the retrievable blood clot filter being retrievable by a retrieval device, the releasable coupler is adapted to release at least one releasable upstream end of the alignment ribs during retrieval of the retrievable blood clot filter, wherein the alignment section is self expandable into a deployed state while the releasable upstream ends are held by the releasable coupler.
1 more element
A retrievable blood clot filter comprising:
- as filter section having a plurality of filter legs;
- locking means;
- and
- an alignment section coupled to the filter section, a shaft positioned along a longitudinal axis of the alignment section and coupled to both the alignment section and the filter section, the alignment section is longitudinally spaced from the filter section in a non-overlapping manner, the alignment section having a plurality of alignment ribs having releasable upstream ends coupled to the locking means by an interference friction fit, locking means capable of releasing at least one releasable upstream end of the alignment ribs in response to as longitudinal force, the released upstream end of the alignment rib being a free end, the retrievable blood clot filter being retrievable by a retrieval device, the locking means is adapted to release at least one releasable upstream end of the alignment ribs during retrieval of the blood clot filter, wherein the alignment section is self expandable into a deployed state while the releasable upstream ends are locked by the locking means.
1 more element
A blood clot filter comprising:
- a conical filter section having a filter hub and a plurality of filter legs having downstream ends coupled to the hub and upstream ends that extend radially outwardly;
- a releasable lock;
- and
- an alignment section spaced from the filter section along a longitudinal axis in a non-overlapping manner, a shaft positioned along a longitudinal axis of the alignment section and coupled to both the alignment section and the filter section, the alignment section having an alignment hub and a plurality of alignment ribs having releasable upstream ends releasably coupled by an interference friction fit to the releasable lock and downstream ends, the alignment ribs extending radially outwardly from the downstream ends and then further extending radially inwardly, the releasable lock adapted to release the upstream ends of the alignment ribs in response to a longitudinal force applied to the at least one releasable upstream end during retrieval of the retrievable blood clot filter by a retrieval device, the released upstream ends of the alignment ribs being free ends, wherein the alignment section is self expandable into a deployed state while the releasable upstream ends are locked by the releasable lock.
1 more element
Dependencies are inferred from the claim text.