Occlusion of a vessel
First Claim
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1. A device for occluding a vascular segment, comprising:
- a tubular member having an expandable member at a distal end portion thereof, said tubular member configured for insertion into a blood vessel, said tubular member defining a lumen having at its proximal section a transverse surface at least partially occluding said lumen, said transverse surface having an opening of a first transverse profile;
an elogated member within said tubular member and passing through said opening of said tubular member promixal section, said expandable member connected to a distal end portion of said elongate member, said elongate member expanding said expandable member into contact with the blood vessel as said tubular member and said elongate member are moved with respect to each other; and
a lock fixed on a proximal portion of said elongate member which engages said transverse surface of said tubular member, without extending radially beyond an outer surface of said tubular member, to prevent movement of said elongate member in at least one direction with respect to said tubular member when said expandable member is expanded to contact the blood vessel;
said lock having a second transverse profile which, when said expandable member is expanded, interferes with said first transverse profile of said opening of said tubular member proximal section.
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Abstract
A device for occluding a vessel employs one of a number of different expansion members joined to one or more elongate members. The expansion member may include a braid, one or more coils, ribs, a ribbon-like structure, a slotted tube, or a filter-like mesh. If the expansion member is enclosed by a suitable membrane, the device seals with the vessel wall to partially or completely occlude the vessel. A perforated membrane may be used to permit the perfusion of blood. The expansion member may be self-expanding, or it may be expanded by engaging it with one of the elongate members. Alternatively, the expansion member may be expanded by heating it.
345 Citations
33 Claims
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1. A device for occluding a vascular segment, comprising:
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a tubular member having an expandable member at a distal end portion thereof, said tubular member configured for insertion into a blood vessel, said tubular member defining a lumen having at its proximal section a transverse surface at least partially occluding said lumen, said transverse surface having an opening of a first transverse profile;
an elogated member within said tubular member and passing through said opening of said tubular member promixal section, said expandable member connected to a distal end portion of said elongate member, said elongate member expanding said expandable member into contact with the blood vessel as said tubular member and said elongate member are moved with respect to each other; and
a lock fixed on a proximal portion of said elongate member which engages said transverse surface of said tubular member, without extending radially beyond an outer surface of said tubular member, to prevent movement of said elongate member in at least one direction with respect to said tubular member when said expandable member is expanded to contact the blood vessel;
said lock having a second transverse profile which, when said expandable member is expanded, interferes with said first transverse profile of said opening of said tubular member proximal section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of occluding a segment with blood vessel, comprising:
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inserting a tubular member into the blood vessel, the tubular member having an expandable member at a distal portion thereof;
inserting an elongate member within the blood vessel, the elongate member positioned within the tubular member and including a distal portion which is connected to the expandable member;
passing the elongate member through a transverse opening formed is a proximal section of the tubular member, the opening having a first profile;
expanding the expandable member into contact with the blood vessel by moving the tubular member and the elongate member with respect to each other;
moving a lock at a proximal portion of the elongate member into a locked configuration to prevent movement of the elongate member and the tubular member with respect to each other in at least one direction, the lock having a second profile which is different from but engages and interferes with the first profile of the opening of the tubular member, the lock not extending in the radial sense beyond an outer surface of the tubular member, so that the expandable member remains in contact with the blood vessel; and
maintaining the lock in the locked configuration without the lock extending in the radial sense beyond an outer surface of the tubular member. - View Dependent Claims (15, 16, 17, 18)
performing a medical procedure near the segment; and
retrieving the elongate member, the tubular member and the expandable member from the vessel.
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19. An apparatus, comprising:
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a tubular member having an expandable member at a distal end portion thereof, said tubular member configured for insertion into a blood vessel, said tubular member defining a lumen and having at its proximal section an opening of a first transverse profile;
an elongate member within said tubular member passing through said opening of said tubular member proximal section and which is connected to said expandable member to expand said expandable member into contact with the blood vessel as said tubular member and said elongate member are moved with respect to each other; and
a lock at a proximal portion of said elongate member which is adjustable between a locked configuration, and an unlocked configuration, wherein;
the locked configuration prevents movement of said elongate member and said tubular member with respect to each other through interference of a second transverse profile of said lock with the first transverse profile of said opening in said tubular member; and
the unlocked configuration permits said lock to slide within said tubular member. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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Specification