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US 7,918,879 B2Granted
Expandable fastener with compressive grips
OwnerJeffrey Eric Yeung, Teresa T. Yeunginventors
Life of this patent
Estimating the term…
Abstract
Anchoring elements of a fastener are made elastically curved. The curvatures of the elements are resiliently straightened by a trocar for tissue insertion. As the trocar is withdrawn, the anchoring elements resume the curved configuration, laterally pressing the elements against tissue to anchor the fastener.
Claims57
An expandable fastener deployable with a needle, comprising:
- a first leg formed of an elastic material and having a curved position and a resiliently straightened position, when said first leg is in said curved position, said first leg having a convex side and a concave side,
- and wherein said first leg comprising a first semi-cylinder adhered and extending from a distal portion of said convex side of said first leg, and a first plurality of tissue gripping elements located on said concave side of said first leg,
- a second leg formed of an elastic material and having a curved position and a resiliently straightened position, when said second leg is in said curved position, said second leg having a convex side and a concave side,
- and wherein said second leg comprising a second semi-cylinder adhered and extending from a distal portion of said convex side of said second leg, and a second plurality of tissue gripping elements located on said concave side of said second leg,
- wherein said first and second semi-cylinders are sized and configured to retain said needle,
- when said first and second legs are in said curved positions, said first and second semi-cylinders are separate;
- and when said first and second legs are in said resiliently straightened positions, the first semi-cylinder is connected to the second leg and said second semi-cylinder is connected to said first leg.
4 more elements
An expandable fastener, comprising:
- a first elastically curved section having a resiliently straighten position and a curved position, said first elastically curved section comprising a first head portion, a first leg portion extending from said first head portion, a first groove indenting along a length of said first head portion and said first leg portion, and a first semi-cylinder adhered and covering a distal portion of said first groove,
- a second elastically curved section having a resiliently straighten position and a curved position, said second elastically curved section comprising a second head portion, a second leg portion extending from said second head portion, a second groove indenting along a length of said second head portion and said second leg portion, and a second semi-cylinder adhered and covering a distal portion of said second groove, wherein said second semi-cylinder is separate from said first semi-cylinder in said curved position, and wherein said first groove connects to said second semi-cylinder and said second groove connects to said first semi-cylinder in said resiliently straighten positions.
An expandable fastener for deployment with a needle, said expandable fastener comprising:
- a first leg having tissue gripping elements located on a concave surface thereof, said first leg having a curved position and a resiliently straightened position, a second leg having tissue gripping elements located on a concave surface thereof, said second leg having a curved position and a resiliently straightened position, a head portion located at proximal ends of said first and second legs, a first semi-cylinder adhered and covering a distal portion of a first groove extending the length of said first leg, said first semi-cylinder sized and configured to allow the needle to be located therein;
- a second semi-cylinder adhered and covering a distal portion of a second groove extending the length of said second leg, and wherein, when the needle is located within said first and second semi-cylinders, said first and second legs are held together in said resiliently straightened positions;
- when said first and second legs are held in said second resiliently straightened positions, said at least one semi-cylinder is distal to said second semi-cylinder;
- and when said first and second legs are in said curved positions, said first and second semi-cylinders are separate.
1 more element
Dependencies are inferred from the claim text.