Fixation devices, systems and methods for engaging tissue
DCFirst Claim
1. A fixation device for engaging a heart valve tissue, said device comprising:
- a coupling member;
a pair of fixation elements, each of the pair having a first end, a free end opposite the first end and an engagement surface therebetween for engaging the tissue, the first ends being pivotably coupled to the coupling member such that the fixation elements are movable from a closed position wherein the free ends are disposed at a separation angle of less than about 0°
up to about 45°
to a first open position wherein the free ends are disposed at a separation angle of up to about 360°
, and wherein the fixation elements are adapted to atraumatically grasp and release the heart valve tissue, wherein the free ends are adapted to minimize trauma to the heart valve tissue, and wherein the engagement surfaces comprise a concave region in which the coupling member at least partially nests when the pair of fixation elements are in the closed position thereby reducing profile of the device, and wherein the fixation elements are at least partially covered with a covering material adapted to permit ingrowth of tissue thereto; and
a pair of proximal elements, the pair of proximal elements each having a first end and a free end opposite the first end, the first ends being coupled to the coupling member such that the free ends of the proximal elements are movable relative to the coupling member, wherein each proximal element is at least partially recessed in the concave region of one of the pair of fixation elements when the heart valve tissue is not disposed therebetween.
1 Assignment
Litigations
1 Petition
Accused Products
Abstract
The invention provides devices, systems and methods for tissue approximation and repair at treatment sites. The devices, systems and methods of the invention will find use in a variety of therapeutic procedures, including endovascular, minimally-invasive, and open surgical procedures, and can be used in various anatomical regions, including the abdomen, thorax, cardiovascular system, heart, intestinal tract, stomach, urinary tract, bladder, lung, and other organs, vessels, and tissues. The invention is particularly useful in those procedures requiring minimally-invasive or endovascular access to remote tissue locations, where the instruments utilized must negotiate long, narrow, and tortuous pathways to the treatment site. In addition, many of the devices and systems of the invention are adapted to be reversible and removable from the patient at any point without interference with or trauma to internal tissues.
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Citations
34 Claims
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1. A fixation device for engaging a heart valve tissue, said device comprising:
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a coupling member; a pair of fixation elements, each of the pair having a first end, a free end opposite the first end and an engagement surface therebetween for engaging the tissue, the first ends being pivotably coupled to the coupling member such that the fixation elements are movable from a closed position wherein the free ends are disposed at a separation angle of less than about 0°
up to about 45°
to a first open position wherein the free ends are disposed at a separation angle of up to about 360°
, and wherein the fixation elements are adapted to atraumatically grasp and release the heart valve tissue, wherein the free ends are adapted to minimize trauma to the heart valve tissue, and wherein the engagement surfaces comprise a concave region in which the coupling member at least partially nests when the pair of fixation elements are in the closed position thereby reducing profile of the device, and wherein the fixation elements are at least partially covered with a covering material adapted to permit ingrowth of tissue thereto; anda pair of proximal elements, the pair of proximal elements each having a first end and a free end opposite the first end, the first ends being coupled to the coupling member such that the free ends of the proximal elements are movable relative to the coupling member, wherein each proximal element is at least partially recessed in the concave region of one of the pair of fixation elements when the heart valve tissue is not disposed therebetween. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A fixation device for engaging a heart valve tissue, said device comprising:
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a coupling member; a pair of fixation elements, each of the pair having a first end, a free end opposite the first end and an engagement surface therebetween for engaging the heart valve tissue, the first ends being pivotably coupled to the coupling member such that the fixation elements are movable from a closed position wherein the free ends are disposed at a first separation angle to an open position, wherein the free ends are disposed at a second separation angle, and wherein the fixation elements are adapted to atraumatically grasp and release the heart valve tissue, wherein the free ends are adapted to minimize trauma to the tissue, and wherein the engagement surfaces comprise a concave region in which the coupling member at least partially nests when the pair of fixation elements are in the closed position thereby reducing profile of the device; and a pair of proximal elements, the pair of proximal elements each having a first end and a free end opposite the first end, the first ends being coupled to the coupling member such that the free ends of the proximal elements are movable relative to the coupling member, wherein each proximal element is at least partially recessed in the concave region of one of the pair of fixation elements when the heart valve tissue is not disposed therebetween, and wherein the proximal elements comprise a surface defining a plurality of openings therein. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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Specification