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US7578843: Heart valve prosthesis

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Filing Information

Inventor(s) Mark C. S. Shu ·
Assignee(s) Medtronic, Inc. ·
Attorney/Agent(s) Mike Jaro · Jeffrey J. Hohenshell ·
Primary Examiner Alvin J Stewart ·
Application Number US10404233
Filing date 04/01/2003
Issue date 08/25/2009
Prior Publication Data
Predicted expiration date 09/07/2023
Patent term adjustment 418
U.S. Classifications 623/211  ·
International Classifications A61F224  ·
Kind CodeB2
Related U.S. Application DataThis application is a continuation-in-part of Ser. No. 10/196,527 filed Jul. 16, 2002 now U.S. Pat. No. 7,172,625, which is incorporated by reference herein in its entirety.
22 Claims, 23 Drawings


Abstract

A heart valve prosthesis has a frame that includes at least one outwardly extending annular flange adjacent to a suturing ring and a band comprising an inwardly extending annular flange that is capable of engagement with the annular flange of the frame. A tortuous path is formed between the annular flange of the frame and the annular flange of the band that can engage and restrain a suture placed between them. One or more split portions or tab portions on the band are adapted to lock the band in engagement with the flange of the frame. Such a device can be used to more easily replace a heart valve by advancing a sutures through a suturing ring on the valve and the valvular rim such that they are brought outward of the flange extending from the frame and then advancing the band over the valve and over the sutures at a proximal, outflow end of the valve until the band engages the flange and captures the sutures between the band and the flange.

Independent Claims | See all claims (22)

  1. 1. A heart valve prosthesis comprising: an annular valve body comprising a frame and a suturing ring, the frame including at least one outwardly extending annular flange adjacent to the suturing ring; a band comprising at least one inwardly extending annular flange that is capable of engagement with the annular flange of the frame such that a tortuous path is formed between the annular flange of the frame and the annular flange of the band that can engage and restrain a suture placed therein; at least one split portion on the band adapted to lock the band in engagement with the flange of the frame; wherein the split portion includes two split ends defining a split extending through a radial width of the band; wherein the split ends are spreadable relative to one another and are secured by a restraint mechanism; and wherein the restraint mechanism includes a suture.
  2. 4. A heart valve prosthesis comprising: an annular valve body comprising a frame and a suturing ring, the frame forming a central passage defining a longitudinal axis and including at least one outwardly extending annular flange longitudinally spaced from to the suturing ring relative to the longitudinal axis; a band comprising at least one inwardly extending annular flange that is capable of engagement with the annular flange of the frame such that a tortuous path is formed between the annular flange of the frame and the annular flange of the band that can engage and restrain a suture placed therein; at least one split portion on the band adapted to lock the band in engagement with the flange of the frame; wherein the band includes a plurality of splits that extend partially through the band; and wherein the plurality of splits define at least one locking tab on the band.
  3. 9. A heart valve prosthesis comprising: an annular valve body comprising a frame and a suturing ring, the frame including at least one outwardly extending annular flange adjacent to the suturing ring, the annular flange having at least one recess formed on an upper, outflow side of the flange; a band comprising at least one inwardly extending annular flange that is capable of engagement with the annular flange of the frame, including a portion of the flange of the band capable of engagement with the at least one recess formed on the annular flange of the frame, such that a tortuous path is formed between the annular flange of the frame and the annular flange of the band that can engage and restrain a suture placed therein; and at least one locking element on one of the band or the flange of the frame adapted to lock the band in engagement with the flange of the frame upon insertion of the locking element into a complimentary structure provided with an other of the band or the flange of the frame, wherein the locking element includes at least one locking tab.
  4. 19. A heart valve prosthesis comprising: an annular valve body comprising a frame and a suturing ring, the frame including at least one outwardly extending annular flange adjacent to the suturing ring; a band comprising at least one inwardly extending annular flange that is capable of engagement with the annular flange of the frame, including a portion of the flange capable of engagement with a portion of the annular flange of the frame, such that a tortuous path is formed between the annular flange of the frame and the annular flange of the band that can engage and restrain a suture placed therein; at least one locking tab formed by one of the band or the flange of the frame adapted to lock the band in engagement with the flange of the frame; and wherein the prosthesis includes at least two locking tabs.
  5. 20. A heart valve prosthesis comprising: an annular valve body comprising a frame and a suturing ring, the frame including at least one outwardly extending annular flange adjacent to the suturing ring; a band comprising at least one inwardly extending annular flange that is capable of engagement with the annular flange of the frame, including a portion of the flange capable of engagement with a portion of the annular flange of the frame, such that a tortuous path is formed between the annular flange of the frame and the annular flange of the band that can engage and restrain a suture placed therein; at least one locking tab on one of the band or the flange of the frame adapted to lock the band in engagement with the flange of the frame; and wherein the locking tab includes at least one barbed portion extending from a tab portion, the barbed portion having a flat surface having a longitudinal axis projecting perpendicular to the tab portion.
  6. 22. A heart valve prosthesis comprising: an annular valve body comprising a frame and a suturing ring, the frame including at least one outwardly extending annular flange adjacent to the suturing ring; a band comprising an outside portion and at least one inwardly extending annular flange that define a recess within which the annular flange of the frame is nested upon final assembly, including a portion of the flange capable of engagement with a portion of the annular flange of the frame, such that a tortuous path is formed between the annular flange of the frame and the annular flange of the band that can engage and restrain a suture placed therein; at least one locking tab on one of the band or the flange of the frame adapted to lock the band in engagement with the flange of the frame; and wherein the prosthesis is a mechanical valve.

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Patent Family

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