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US7316706: Tensioning device, system, and method for treating mitral valve regurgitation

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Filing Information

Inventor(s) Eliot Bloom · Nareak Douk · John Horrigan · Rany Huynh · Nasser Rafiee ·
Assignee(s) Medtronic Vascular, Inc. ·
Primary Examiner Julian W. Woo ·
Application Number US10867394
Filing date 06/14/2004
Issue date 01/08/2008
Prior Publication Data
Predicted expiration date 03/15/2026
Patent term adjustment 639
U.S. Classifications 606/232  · 606/151  ·
International Classifications A61B1704  · A61B1708  ·
Kind CodeB2
Related U.S. Application DataPRIORITY CLAIM
This application claims the benefit of U.S. Provisional Application No. 60/480,195 filed Jun. 20, 2003; U.S. Provisional Application No. 60/480,472 filed Jun. 20, 2003; and U.S. Provisional Application No. 60/503,035 filed Sep. 15, 2003; the entirety of each of which is hereby incorporated by reference.
13 Claims, 8 Drawings


Abstract

A system for treating mitral valve regurgitation comprises a tensioning device slidably received within a delivery catheter. The tensioning device includes a tether linking proximal an anchoring member and a distal anchoring member. At least one of the anchoring members includes an elastic portion that flexes in response to a heartbeat when the tensioning device is positioned across a chamber of a heart. The tether includes at least one locking member initially positioned between the anchoring members. A method for treating mitral valve regurgitation comprises piercing a first wall of a chamber of a heart, engaging a distal anchoring member with a second wall of the heart chamber, engaging a proximal anchoring member with the first wall, and pulling a locking member affixed to a tether linking the anchoring members from an initial position between the two anchoring members to a locked position proximal the proximal anchoring member.

Independent Claims | See all claims (13)

  1. 1. A system for treating mitral valve regurgitation comprising: a tensioning device comprising a tether, a distal anchoring member positioned adjacent to a distal end of the tether and a proximal anchoring member positioned adjacent to a proximal end of the tether, wherein at least one of the anchoring members includes an elastic portion that flexes in response to a heart beat when the tensioning device is positioned across a chamber of a heat; and a delivery catheter, wherein the tensioning device is slidably received within a lumen of the delivery catheter, wherein the delivery catheter comprises a guiding sheath, a piercing tube slidably received within a lumen of the guiding sheath, a holding tube slidably received within a lumen of the piercing tube, a push cylinder slidably received within a lumen of the holding tube and a stop collar attached to an outside surface of a distal portion of the piercing tube, and wherein a portion of the stop collar is self-expanding when the stop collar is positioned outside the lumen of the guiding sheath.
  2. 2. A system for treating mitral valve regurgitation, comprising: a delivery catheter; and a tensioning device received in the delivery catheter, the tensioning device including a tether, a distal anchoring member positioned adjacent to a distal end of the tether, a proximal anchoring member positioned adjacent to a proximal end of the tether, and at least one locking member affixed to the tether; wherein when the locking member is pulled from an initial position between the anchors to a locked position proximal the proximal anchoring member, the length of the tether is adjusted to change the proximity of the anchoring members one to the other, wherein the delivery catheter comprises a guiding sheath, a piercing tube slidably received within a lumen of the guiding sheath, a holding tube slidably received within a lumen of the piercing tube, a push cylinder slidably received within a lumen of the holding tube and a stop collar attached to an outside surface of a distal portion of the piercing tube, and wherein a portion of the stop collar is self-expanding when the stop collar is positioned outside the lumen of the guiding sheath.

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Referenced By

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Patent Family

Document NumberAssigneeInventorsIssue/Pub Date
EP1643939 Medtronic Vascular, Inc. Eliot BLOOM et al. Apr 2006
US7316706 Medtronic Vascular, Inc. Eliot Bloom et al. Jan 2008