Atrial filter implants
First Claim
1. A device for filtering blood flow through a body aperture, comprising:
- a cover comprising a filter, said cover disposed on a multiplicity of tines extending radially outward from a device axis;
an anchoring structure comprising a plurality of anchoring tines, said plurality of tines extending radially outward from said axis; and
a connecting structure along said axis joining said cover and said anchoring structure, wherein said device has a substantially H-shaped cross-section, and wherein said cover and said anchoring structure are placed on opposite sides of said body aperture.
1 Assignment
0 Petitions
Accused Products
Abstract
Implant devices for filtering blood flowing through atrial appendage ostiums have elastic cover and anchoring substructures. The substructures may include reversibly folding tines or compressible wire braid structures. The devices are folded to fit in catheter tubes for delivery to the atrial appendages. The devices elastically expand to their natural sizes when they are expelled from the catheter tubes. Filter elements in the covers block emboli from escaping through the ostiums
The devices with tine substructures may have H-shaped cross sections. These devices seal the appendages by pinching an annular region of ostium tissue between the cover and the anchoring substructures. The shallow deployment depth of these H-shaped devices allows use of an universal device size for atrial appendages of varying lengths or depths. The devices may include remotely activated fixtures for refolding the tines for device recovery or position adjustment.
653 Citations
50 Claims
-
1. A device for filtering blood flow through a body aperture, comprising:
-
a cover comprising a filter, said cover disposed on a multiplicity of tines extending radially outward from a device axis;
an anchoring structure comprising a plurality of anchoring tines, said plurality of tines extending radially outward from said axis; and
a connecting structure along said axis joining said cover and said anchoring structure, wherein said device has a substantially H-shaped cross-section, and wherein said cover and said anchoring structure are placed on opposite sides of said body aperture. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A method for filtering blood flowing through the ostium of an atrial appendage, comprising:
-
providing a device having a substantially H-shaped cross section, said device comprising a cover disposed on a multiplicity of tines extending radially from a device axis, said cover including a filter;
an anchoring structure joined to said cover by a connecting structure that is along said device axis, said anchoring structure comprising a plurality of anchoring tines extending radially from said axis;
inserting a portion of said device in said atrial appendage;
positioning said cover and said anchoring structure on opposite sides of said ostium. - View Dependent Claims (13, 14)
-
-
15. A device for filtering blood flowing through the ostium of an atrial appendage, comprising:
-
a cover comprising a filter, wherein said cover extends across said ostium; and
an anchoring structure comprising a plurality of anchoring tines extending radially from a connecting structure that joins said anchoring structure to said cover, wherein said anchoring structure has a substantially V-shaped cross-section with a vertex pointing away from said cover, and said anchoring structure engages the interior walls of said atrial appendage to retain said device in position. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
-
-
25. A device for filtering blood flow through a body aperture, comprising:
-
a cover comprising a filter, an anchoring structure; and
a connecting structure joining said cover and said anchoring structure; and
a slideable recovery tube disposed on said connecting structure, wherein said cover and said anchoring structure reversibly fold along said connecting structure, and wherein said recovery tube slides to a first position to fold said cover and said anchoring structure and said recovery tube slides to a second position to unfold said cover and said anchoring structure. - View Dependent Claims (26, 27, 28, 29, 30)
-
-
31. A method for reversibly placing an implant device in a body cavity through a catheter tube, comprising:
-
providing an implant device comprising;
a tubular section;
structures that can be reversibly folded along said tubular section; and
a sliding tube disposed on said tubular section, wherein said sliding tube slides to a first position to fold said structures and slides to a second position to unfold said structures, and wherein said tubular section and said sliding tube further comprise detents that can be engaged to lock their movements;
moving said device with said sliding tube at said first position through said catheter tube to said body cavity; and
sliding said sliding tube to said second position to unfold said structures. - View Dependent Claims (32, 33)
-
-
34. A device for filtering blood flowing through the ostium of an atrial appendage, comprising:
-
a proximal portion;
a distal portion joined with said proximal portion; and
a filter disposed on said proximal portion, wherein said distal portion comprises a cylindrical braided wire structure and said proximal portion comprises a closed end of said cylindrical braided wire structure, wherein said filter is disposed on said proximal portion, and wherein said braided wire structure is shaped for an interference fit in said atrial appendage and said proximal portion extends across said ostium. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45)
-
-
46. A device for filtering blood flowing through the ostium of an atrial appendage, comprising:
-
a proximal portion;
a distal portion joined with said proximal portion; and
wherein said distal portion comprises a cylindrical braided wire structure and said proximal portion comprises a closed end of said cylindrical braided wire structure, wherein said braided wire structure is shaped for an interference fit in said atrial appendage and said proximal portion extends across said ostium, and wherein said braided wire structure comprises a braid with interwire hole sizes substantially smaller than harmful-sized emboli. - View Dependent Claims (47, 48, 49, 50)
-
Specification