VESSEL CLOSURE DEVICE
First Claim
1. An implantable grasper for closure of an opening in a body vessel wall, comprising:
- a grasping member having a proximal portion and a distal portion, said proximal portion comprising a body and a proximal end, and said distal portion comprising a plurality of fingers extending radially from a distal end of said body at a first angle, and collapsible therefrom to a second angle, said fingers having a distal portion configured to grasp an outer wall portion of said body vessel surrounding said opening when said fingers are extended at said first angle; and
a locking member slidably received over a portion of said grasping member, the locking member movable along the fingers to collapse said fingers from said first angle to said second angle to cause said collapsed fingers to at least substantially close said vessel opening, said grasping member and said locking member being formed from a bioabsorbable composition,where at least one of said fingers of the grasping member and the locking member is structured and arranged to inhibit the locking member from axial movement in either a proximal direction or a distal direction after the fingers are collapsed.
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0 Petitions
Accused Products
Abstract
A device and system for closure of an opening formed in a body vessel includes a bioabsorbable grasping member and locking member. The grasping member includes grasping lingers that are radially collapsible to the closed positions by movement of the locking member over the fingers. A distal portion of the fingers is configured to grasp an outer wall portion of the body vessel surrounding the opening when the fingers are in the open position. Movement of the locking member can cause the fingers to at least substantially close the vessel opening. Structural features on the fingers and/or locking member can inhibit proximal or distal movement of the locking member when in a locking position. A detachable arm can be coupled to the grasping member to facilitate placement of the grasping member. A sheath can fit over the detachable arm and be configured to move the locking member over the fingers.
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Citations
20 Claims
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1. An implantable grasper for closure of an opening in a body vessel wall, comprising:
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a grasping member having a proximal portion and a distal portion, said proximal portion comprising a body and a proximal end, and said distal portion comprising a plurality of fingers extending radially from a distal end of said body at a first angle, and collapsible therefrom to a second angle, said fingers having a distal portion configured to grasp an outer wall portion of said body vessel surrounding said opening when said fingers are extended at said first angle; and a locking member slidably received over a portion of said grasping member, the locking member movable along the fingers to collapse said fingers from said first angle to said second angle to cause said collapsed fingers to at least substantially close said vessel opening, said grasping member and said locking member being formed from a bioabsorbable composition, where at least one of said fingers of the grasping member and the locking member is structured and arranged to inhibit the locking member from axial movement in either a proximal direction or a distal direction after the fingers are collapsed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for closure of an opening in a body vessel wall of a body, comprising:
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a bioabsorbable grasping member having a proximal end, a proximal body, and a plurality of collapsible fingers extending radially from a distal end of said proximal body, said fingers having a distal portion, the distal portion comprising at least one of;
one or more first cut-out portions at an axial end of said distal portion, one or more teeth along at least one of a pair of lateral sides of said fingers, and a second cut-out portion along at least one of said lateral sides proximal of said teeth, said distal portion configured to grasp an outer wall portion of said body vessel surrounding said opening when said fingers are extended in an open position;a bioabsorbable locking member slidably coupled over a portion of the grasping member, where the locking member is movable to collapse said fingers from the open position to a closed position to cause said collapsed fingers to at least substantially close said vessel opening; and a detachable arm removably attached to the grasping member so that the grasping member and the locking member can remain in the body after detachment of the detachable arm from the grasping member. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A method for closing an opening at an access site in a body vessel, comprising:
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providing a closure device for said opening, said closure device comprising;
a grasping member having a proximal portion and a distal portion, said distal portion comprising a plurality of grasping fingers extending from a distal end of said proximal portion, said fingers radially extending from said proximal portion distal end in an open position, and radially collapsible therefrom to a closed position, said fingers having a distal portion configured to grasp tissue of said body vessel surrounding said opening when said fingers are extended in the open position, a closing member slidable relative to a portion of said grasping member for radially collapsing said fingers from said open position to said closed position, each of said grasping member and said closing member being formed from a bioabsorbable composition, where at least one of said fingers and the closing member is structured and arranged to inhibit the closing member from axial movement in either a proximal direction or a distal direction after the fingers are collapsed;
a stabilizing member engageable with said proximal portion of the grasping member; and
a locking sheath slidable over said stabilizing member and at least a portion of said grasping member;arranging said grasping member to said open position such that the distal portion of said fingers engage tissue surrounding said opening; and advancing said locking sheath over said stabilizing member and a length of said grasping member, such that said locking sheath engages and advances said closing member over a length of said fingers, thereby collapsing said fingers to the closed position to at least substantially close said vessel opening at the access site in the body vessel.
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Specification