Fixation devices, systems and methods for engaging tissue
DCFirst Claim
1. A fixation device for engaging tissue comprising:
- a pair of fixation elements each having a first end, a free end opposite the first end, and an engagement surface therebetween for engaging the tissue, the first ends being movably coupled together such that the fixation elements are moveable between a closed position wherein the engagement surfaces face each other to a first open position wherein the engagement surfaces are positioned away from each other; and
an actuation mechanism coupled to the fixation elements adapted to move the fixation elements between the closed position and the first open position; and
a pair of gripping elements, each gripping element moveable with respect to one of the fixation elements and being disposed in opposition to one of the engagement surfaces so as to capture tissue therebetween when the pair of fixing elements are in the first open position,wherein each fixation element is at least partially concave and each gripping element is at least partially recessed within the fixation element in the deployed configuration, andwherein the gripping elements are movable from an undeployed configuration in which each gripping element is separated from an opposing engagement surface, to a deployed configuration in which the gripping element is closer to the opposing engagement surface.
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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
38 Claims
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1. A fixation device for engaging tissue comprising:
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a pair of fixation elements each having a first end, a free end opposite the first end, and an engagement surface therebetween for engaging the tissue, the first ends being movably coupled together such that the fixation elements are moveable between a closed position wherein the engagement surfaces face each other to a first open position wherein the engagement surfaces are positioned away from each other; and an actuation mechanism coupled to the fixation elements adapted to move the fixation elements between the closed position and the first open position; and a pair of gripping elements, each gripping element moveable with respect to one of the fixation elements and being disposed in opposition to one of the engagement surfaces so as to capture tissue therebetween when the pair of fixing elements are in the first open position, wherein each fixation element is at least partially concave and each gripping element is at least partially recessed within the fixation element in the deployed configuration, and wherein the gripping elements are movable from an undeployed configuration in which each gripping element is separated from an opposing engagement surface, to a deployed configuration in which the gripping element is closer to the opposing engagement surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A fixation device for engaging tissue comprising:
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a pair of fixation elements each having a first end, a free end opposite the first end, and an engagement surface therebetween for engaging the tissue, the first ends being movably coupled together such that the fixation elements are moveable between a closed position wherein the engagement surfaces face each other to an inverted position wherein the engagement surfaces face away from each other; and an actuation mechanism coupled to the fixation elements adapted to move the fixation elements between the closed position and the inverted position; and a pair of gripping elements, each gripping element moveable with respect to one of the fixation elements and being disposed in opposition to one of the engagement surfaces so as to capture tissue therebetween when the pair of fixation elements are in a position other than the closed position, wherein each gripping element is at least partially positionable within the fixation element in the deployed configuration, and wherein the gripping elements are movable from an undeployed configuration in which each gripping element is separated from an opposing engagement surface, to a deployed configuration in which the gripping element is closer to the opposing engagement surface. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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Specification