Tensioning device, system, and method for treating mitral valve regurgitation
First Claim
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.
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Accused Products
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.
606 Citations
13 Claims
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1. A system for treating mitral valve regurgitation comprising:
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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.
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2. A system for treating mitral valve regurgitation, comprising:
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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. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification