Expandable fastener

摘要

Implementations of the present disclosure provide a fastener including a tip portion, a proximal portion, an advancement mechanism and an expandable member. The tip portion has a first surface. The proximal portion is configured for coupling to the tip portion and has a second surface. The mechanism advances the first surface toward the second surface. The expandable member includes a first end abutting the first surface of the tip portion and a second end abutting the second surface of the proximal portion. Advancement of the two surfaces toward each other advances the first end of the expandable member toward the second end of the expandable member. The expandable member is configured to expand in response to the advancement. At least one of the ends of the expandable member is a free end extending under and configured to rotate with respect to an abutting one of the first or second surfaces.

主权项

1. A fastener comprising:
a tip portion having a first surface; a proximal portion configured for coupling to the tip portion and having a second surface; a mechanism configured to advance the first surface toward the second surface; and an expandable member having a first end abutting the first surface of the tip portion and a second end abutting the second surface of the proximal portion; wherein the first surface includes an angled face extending from an outer surface of the tip portion towards a longitudinal axis of the fastener in a direction towards a distal end of the tip portion, the first end including a corresponding angled face, wherein the second surface includes an angled face extending from an outer surface of the proximal portion towards a longitudinal axis of the fastener in a direction towards a proximal end of the proximal portion, the second end including a corresponding angled face, wherein advancement of the first surface toward the second surface advances the first end of the expandable member toward the second end of the expandable member, wherein the expandable member is comprised of criss-cross wires, and is configured to radially expand in response to advancement of the first end toward the second end, wherein at least one of the ends of the expandable member is a free end extending between an abutting one of the first or second surfaces and the longitudinal axis of the fastener, the at least one end of the expandable member configured to rotate with respect to the abutting one of the first or second surfaces.