IP Library › Granted Patent US 12,678,305
Granted Patent B2
US 12,678,305 · App. 17/836,252 · Granted Jul 14, 2026

Hybrid stent

Inventors: Michael A. Longo (Glenmoore, PA); William James Harrison (Signal Mountain, TN)
Assignee: VESPER MEDICAL, INC.
A61F2/91A61F2002/823A61F2002/828A61F2002/91525A61F2002/91558A61F2002/91575A61F2250/0018
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Quick Facts
Patent No.
US 12,678,305
App. No.
17/836,252
Filed
Jun 9, 2022
Granted
Jul 14, 2026
Kind
B2
Art Unit
3799
USPC
623/1.15
Abstract

A stent includes a high radial/crush force segment and a highly flexible segment. In an aspect, a plurality of first ring struts connected such that each of the plurality of first rings comprises a sinusoidal pattern having a plurality of apices and troughs, each first ring connected to an adjacent first ring by at least one connector. The connector extends from a ring strut of the first ring from a position near an apex of the first ring to a ring strut of the adjacent first rings near an apex of the adjacent ring, and a second stent segment comprises a plurality of second rings connected to one another to form a series of second rings.

Claims (32)

1 . A stent, comprising:

a first stent segment comprising a plurality of first rings connected to one another to form a series of said first rings, the first rings comprising: a plurality of first ring struts connected such that each of the plurality of first rings comprises a sinusoidal pattern having a plurality of apices and troughs, each first ring connected to an adjacent first ring by at least one connector, the connector extending from a ring strut of the first ring from a position offset from an apex of said first ring to a ring strut of the adjacent first rings offset from an apex of the adjacent ring, a second stent segment comprising a plurality of second rings connected to one another to form a series of said second rings wherein: the second stent segment is coupled to the first stent segment;

said first stent segment has a first stiffness and a first chronic outward force and the second stent segment has a second stiffness and a second chronic outward force, wherein the first stiffness is different from the second stiffness and the first chronic outward force is different from the second chronic outward force.

2 . The stent of claim 1 , further comprising at least one reinforcement ring coupled to one of the first rings or one of the second rings, such that the at least one reinforcement ring is the end ring of said stent, the reinforcement ring having a third stiffness and a third chronic outward force, where the third stiffness is different from the first stiffness and the second stiffness and the third chronic outward force is different from the first chronic outward force and the second chronic outward force.

3 . The stent of claim 1 , wherein the first stent segment and the second stent segment have substantially the same diameter in an expanded state.

4 . The stent of claim 2 , wherein the first stent segment, the second stent segment and the reinforcement ring have substantially the same diameter in an expanded state.

5 . The stent of claim 1 , the second rings comprising: a plurality of second ring struts connected such that each of the plurality of second rings comprises a sinusoidal pattern having a plurality of apices and troughs, each second ring connected to an adjacent second ring by at least one connector, the connector extending from a trough of the second ring to an apex of the adjacent second ring.

6 . The stent of claim 1 , wherein each first ring is connected to the adjacent ring by a number of connectors fewer than the number of apices of each first ring.

7 . The stent of claim 1 , wherein the at least one connector extends in a direction non-parallel to a longitudinal axis of the first stent segment.

8 . The stent of claim 7 , wherein the at least one connector extends past at least one apex of the adjacent ring to a connection point on the ring strut of the adjacent first ring in a compressed configuration.

9 . The stent of claim 7 , wherein connectors on either side of a first ring are wound in opposite directions in a compressed configuration.

10 . The stent of claim 2 , wherein at least one reinforcement ring comprising a plurality of reinforcement ring struts connected such that the at least one reinforcement ring comprises a sinusoidal pattering having a plurality of apices and troughs, and further comprising an additional reinforcement ring connected to the at least one reinforcement ring by a reinforcement connector, wherein the reinforcement connector extends from an apex of the at least one reinforcement ring to an apex of the additional reinforcement ring.

11 . The stent of claim 10 , wherein each apex of the at least one reinforcement ring is connected to the additional reinforcement ring by a reinforcement connector.

12 . The stent of claim 1 , wherein the second stent segment is coupled to the first stent segment by a substantially straight connector connecting one of the plurality of second rings to an adjacent one of the plurality of first rings.

13 . The stent of claim 12 , the second rings comprising: a plurality of second ring struts connected such that each of the plurality of second rings comprises a sinusoidal pattern having a plurality of apices and troughs and wherein an apex of the adjacent one of the plurality of first rings is connected by the substantially straight connector to an apex of the one of the plurality of second rings.

14 . The stent of claim 13 , wherein a plurality of apices of the adjacent one of the plurality of first rings are connected to a plurality of apices of the one of the plurality of second rings, each apex of the adjacent one of the plurality of first rings connected to a respective one of the plurality of apexes of the one of the plurality of second rings by the substantially straight connector.

15 . The stent of claim 14 , wherein the plurality of apices of the adjacent one of the plurality of first rings is fewer than all of the apices of the adjacent one of the plurality of first rings.

16 . The stent of claim 14 , wherein the plurality of apices of the one of the plurality of second rings is fewer than all of the apices of the one of the plurality of second rings.

17 . The stent of claim 13 , wherein each connected apex of the adjacent one of the plurality of first rings is spaced from another connected apex of the adjacent one of the plurality of first rings by an apex of the adjacent one of the plurality of first rings that is not connected to the one of the plurality of second rings.

18 . The stent of claim 13 , wherein each connected apex of the one of the plurality of second rings is spaced from another connected apex of the one of the plurality of second rings by an apex of the one of the plurality of second rings that is not connected to the adjacent one of the plurality of second rings.

19 . The stent of claim 1 , wherein attachment of the at least one connector to the ring strut is offset from the actual peak of the apex of the respective ring strut.

20 . The stent of claim 13 , wherein attachment of the substantially straight connector to the one of the plurality of second rings is offset from an actual peak of the apex of the one of the plurality of second rings.

21 . The stent of claim 1 , wherein the first stiffness is substantially constant along the length of the first stent segment and the second stiffness is substantially constant along the length of the second stent segment.

22 . The stent of claim 1 , wherein the first chronic outward force is substantially constant along the length of the first stent segment and the second chronic outward force is substantially constant along the length of the second stent segment.

23 . The stent of claim 1 , further comprising a third stent segment between the first stent segment and the second stent segment, the third stent segment comprising a plurality of third rings connected to one another to form a series of said third rings, the third stent segment having a third stiffness that varies along a length of the third stent segment from the first stent segment to the second stent segment.

24 . The stent of claim 1 , further comprising a third stent segment between the first stent segment and the second stent segment, the third stent segment comprising a plurality of third rings connected to one another to form a series of said third rings, the third stent segment having a third chronic outward force that varies along the length of the third stent segment from the first stent segment to the second stent segment.

25 . The stent of claim 1 , wherein the second segment is connected to the first segment via a smooth transition comprising a plurality of flexible connectors extending from adjacent at least one of the apices of the first stent segment to adjacent at least one apex of a third stent segment in a region adjacent the first stent segment and a plurality of flexible connectors extending from adjacent at least one of the apices of the second stent segment to adjacent at least one apex of the third stent segment in a region of the third stent adjacent the second stent segment.

26 . The stent of claim 25 , wherein adjacent at least one of the apices includes offset from an actual peak of the apex.

27 . The stent of claim 25 , wherein the smooth transition region comprises a plurality of flexible connectors extending from adjacent at least one of the apices of the first stent segment to adjacent at least one of the apices of the second stent segment.

28 . The stent of claim 27 , wherein adjacent at least one of the apices includes offset from an actual peak of the apex.

29 . The stent of claim 1 , wherein diameter of the first stent segment is substantially the same as the second stent segment in an expanded state.

30 . The stent of claim 24 , wherein the diameter of the first segment, the second stent segment and the third stent segment are substantially the same in an expanded state.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 9, 2022
From: HARRISON, WILLIAM JAMES; LONGO, MICHAEL A
To: VESPER MEDICAL, INC.
Reel/Frame 060327/0854 →
Continuity (2)
Continuation 16288744 · Feb 28, 2019
Related Publication 20220296397A1 · Sep 22, 2022
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Notice of Allowance issued for U.S. Appl. No. 16/799,233, dated Jan. 20, 2022 (now issued on Jul. 5, 2022 as U.S. Pat. No. 11,376,142). [cited by applicant]
Office Action issued for Japanese Application No. 2020-513897, dated Nov. 9, 2022 (and English Translation). [cited by applicant]
Office Action and Search Report issued for Chinese Application No. 201880058236.7, dated Oct. 8, 2022 (and English Translation). [cited by applicant]
Office Action issued for Japanese Application No. 2020-513897, dated Apr. 1, 2022. [cited by applicant]