INTERCONNECTION BETWEEN SELECTIVELY-EXPANDABLE AND SELF-EXPANDABLE SECTIONS OF AN OSTIAL STENT

• US 20170056214A1
• Filed: 11/11/2016
• Published: 03/02/2017
• Est. Priority Date: 04/23/2013
• Status: Active Grant

• Current Assignee: Richard F. Corrigan Jr
• Original Assignee: Medical Ingenuities,LLC
• Inventors: Corrigan, Richard F. Jr.
• Granted Patent: US 10,456,278 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61F 2/852 Two or more distinct overlapping stents
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2/91 made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
• CPC Class Codes: A61F 2/958 Inflatable balloons for placing stents or stent-grafts
• CPC Class Codes: A61F 2002/821 Ostial stents
• CPC Class Codes: A61F 2002/9583 Means for holding the stent on the balloon, e.g. using protrusions, adhesives or an outer sleeve
• CPC Class Codes: A61F 2250/0048 differing in mechanical expandability, e.g. in mechanical, self- or balloon expandability

Abstract

An ostial stent is operable to be placed at the ostium of a patient'"'"'s vascular system so as to improve vessel patency in the ostial region. The ostial stent includes a stent tube that presents spaced apart proximal and distal stent openings and a longitudinal stent passage that extends between the openings. The stent tube includes a selectively-expandable tube section and a self-expandable tube section. The self-expandable tube section projects longitudinally from one of the stent openings, and is automatically expandable to a flared condition for placement within the ostium.

Claims

1. An ostial stent for placement at the ostium of a patient'"'"'s vascular system so as to improve vessel patency in the ostial region, said ostial stent comprising:

a stent tube presenting spaced apart proximal and distal stent openings and a longitudinal stent passage that extends between the openings,

said stent tube including a selectively-expandable tube section and a self-expandable tube section,

said self-expandable tube section projecting longitudinally from one of the stent openings, and being automatically expandable to a flared condition for placement within the ostium,

said tube sections being arranged in an end-to-end to configuration to define a connection location spaced between the stent openings; and

stent connection structure interconnecting the tube sections at the connection location,

said stent connection structure spanning between the tube sections and being formed of a material dissimilar from that of the tube sections.

2. The ostial stent as claimed in claim 1,

said tube sections being arranged so as avoid any radial overlap.

3. The ostial stent as claimed in claim 1,

said one tube section including a plurality of circumferentially spaced apart connection arms,

said other tube section including multiple circumferentially spaced apart connector arms opposite the first-mentioned connection arms to define pairs of interengaging arms,

said stent connection structure including multiple interconnection elements, with each element being fixed to and interconnecting a corresponding one of the pairs of interengaging arms.

4. The ostial stent as claimed in claim 3,

said tube sections being arranged so that the interengaging arms do not radially overlap one another.

5. The ostial stent as claimed in claim 3,

each of said pairs of interengaging arms presenting opposed element-engaging faces spaced apart in a longitudinal direction.

6. The ostial stent as claimed in claim 3,

each of said pairs of interengaging arms presenting opposed element-engaging faces spaced apart in a circumferential direction.

7. The ostial stent as claimed in claim 3,

said interconnection elements each comprising a circular disk,

said circular disk including a material selected from the group consisting of tantalum, niobium, and combination thereof.

8. The ostial stent as claimed in claim 7,

said circular disk being welded to the corresponding one of the pairs of interengaging arms.

9. The ostial stent as claimed in claim 1,

said stent connection structure including a plurality of stitches spaced circumferentially about the stent to interconnect the tube sections.

10. The ostial stent as claimed in claim 9,

each of said stitches being directly attached to both of the tube sections.

11. The ostial stent as claimed in claim 9,

said stent connection structure including an intermediate tube section that interconnects and is positioned between the selectively-expandable tube section and the self-expandable tube section, with the tube sections cooperatively defining the stent passage.

12. The ostial stent as claimed in claim 11,

each of said stitches interconnecting the intermediate tube section with one of the selectively-expandable tube section and the self-expandable tube section.