EMBOLECTOMY CAGE

• US 20130158592A1
• Filed: 12/06/2012
• Published: 06/20/2013
• Est. Priority Date: 12/16/2011
• Status: Active Grant

• Current Assignee: Stryker European Operations Holdings, LLC (Stryker Corporation)
• Original Assignee: Stryker Corporation, Stryker Nv Operations Limited (Stryker Corporation)
• Inventors: Porter, Stephen C.
• Granted Patent: US 9,439,750 B2
• Time in Patent Office: Days
• US Class Current: 606/200
• CPC Class Codes: A61B 17/221 Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions surgical snare instruments A61B17/32056
• CPC Class Codes: A61B 2017/22001 Angioplasty, e.g. PCTA
• CPC Class Codes: A61B 2017/22034 for gripping the obstruction or the tissue part from inside
• CPC Class Codes: A61B 2017/22094 for crossing total occlusions, i.e. piercing
• CPC Class Codes: A61B 2017/2212 having a closed distal end, e.g. a loop

Abstract

An embolectomy cage having an elongate axis and a circumference comprises a plurality of paired, closely spaced, substantially parallel, elongate members collectively defining a plurality of open cells, wherein individual elongate members of the pairs are connected at nodes located between respective pairs of axially adjacent cells and circumferentially adjacent cells, and wherein at least one elongate member spans each node without forming a connection to another elongate member.

Claims

1. An embolectomy cage having an elongate axis and a circumference, comprising:

a plurality of paired, closely spaced, substantially parallel, elongate members collectively defining a plurality of open cells,

wherein individual elongate members of the pairs are connected at nodes located between respective pairs of axially adjacent cells and circumferentially adjacent cells, and

wherein at least one elongate member spans each node without forming a connection to another elongate member.

2. The embolectomy cage of claim 1, wherein two pairs of elongate members intersect at each node, with an elongate member of each pair spanning the respective node without forming a connection to another elongate member.

3. The embolectomy cage of claim 1, wherein one elongate member of each pair is more flexible than the other.

4. The embolectomy cage of claim 1, wherein the elongate members of each pair have different cross-sectional geometries.

5. The embolectomy cage of claim 1, each cell comprising a first region bordered by one or more pairs of elongate members, and a second region bordered by one or more unpaired elongate members.

6. The embolectomy cage of claim 1, each cell comprising a first region bordered by proximal pairs of elongate members, and a second region bordered by distal pairs of elongate members.

7. The embolectomy cage of claim 6, wherein the respective elongate members of the proximal and distal pairs are substantially the same length.

8. The embolectomy cage of claim 7, wherein the elongate members of the proximal pairs have greater lengths than the elongate members of the distal pairs.

9. The embolectomy cage of claim 7, wherein the elongate members of the distal pairs have greater lengths than the elongate members of the proximal pairs.

10. The embolectomy cage of claim 1, wherein each pair of elongate members forms a boundary between two adjacent cells.

11. The embolectomy cage of claim 1, wherein the cells are ovoid in shape.

12. The embolectomy cage of claim 1, wherein the cells are hexagonal in shape.

13. The embolectomy cage of claim 1, the cells are substantially uniform in shape.

14. The embolectomy cage of claim 1, wherein two elongate members connect at each node.

15. The embolectomy cage of claim 1, wherein three elongate members connect at each node.

16. The embolectomy cage of claim 1, wherein four elongate members connect at each node.

17. The embolectomy cage of claim 1, wherein two elongate members span each node without forming a connection to another elongate member.

18. An embolectomy cage having an elongate axis, comprising:

a plurality of paired, closely spaced, substantially parallel, elongate members, each pair defining a slot between them,

the pairs of elongate members collectively defining a plurality of cells,

wherein individual elongate members of each of two pairs are connected at nodes between axially adjacent cells, and wherein the slots defined by the respective pairs span the node.

19. An embolectomy cage having an elongate axis and a circumference, comprising:

a plurality of sets of closely spaced, substantially parallel, elongate members collectively defining a plurality of open cells,

wherein each set comprises at least two elongate members,

wherein individual elongate members of the sets are connected at nodes located between respective pairs of axially adjacent cells and circumferentially adjacent cells, and

wherein at least one elongate member spans each node without forming a connection to another elongate member.