초록 ▼

A collapsible medical device for use, e.g., as a vascular sealer. The device includes a sheath adapted to be positioned such that a distal end thereof is adjacent the opening. A mandrel is disposed within a lumen of the sheath and is adapted to be positioned such that a distal length thereof is adja

A collapsible medical device for use, e.g., as a vascular sealer. The device includes a sheath adapted to be positioned such that a distal end thereof is adjacent the opening. A mandrel is disposed within a lumen of the sheath and is adapted to be positioned such that a distal length thereof is adjacent the distal end of the sheath. A collapsible sealing member comprises a fluid-impervious film carried by a plurality of wires. The wires are attached to the mandrel and expand radially outward therefrom. In one method of using such a device, the sealing member is held in a collapsed position within the sheath. The sealing member is advanced through the sheath and beyond the distal end thereof, whereby the sealing member resiliently expands. The sealing member is positioned against the inner wall of the blood vessel adjacent the opening, thereby affecting a temporary seal of the opening. The sealant is introduced into the tissue tract. After hardening, the sealing member is collapsed within the sheath. The sheath the sealing member collapsed therein (together with any existing introducer) are then withdrawn proximally from the patient.

대표청구항 ▼

1. A vascular sealing assembly for closing an opening in a blood vessel, the assembly comprising: a) a sheath adapted to be positioned such that a distal end thereof is adjacent the opening in the blood vessel; b) a mandrel disposed within a lumen of the sheath, the mandrel being adapted to be p

1. A vascular sealing assembly for closing an opening in a blood vessel, the assembly comprising: a) a sheath adapted to be positioned such that a distal end thereof is adjacent the opening in the blood vessel; b) a mandrel disposed within a lumen of the sheath, the mandrel being adapted to be positioned such that a distal length thereof is adjacent the distal end of the sheath; c) a collapsible sealing member comprising a fluid-impervious film carried by a plurality of wires, the wires being attached to the mandrel and expanding radially outward therefrom; and d) a sealant adapted for delivery to an area adjacent the opening in the blood vessel. 2. The vascular sealing assembly of claim 1 wherein the sealant is a procoagulent. 3. The vascular sealing assembly of claim 1 further including an introducer disposed around the sheath through which the sealant is adapted to be delivered to the area adjacent the opening. 4. The vascular sealing assembly of claim 1 further including a syringe for injecting the sealant to the area adjacent the opening. 5. The vascular sealing assembly of claim 1 wherein the wires are formed of stainless steel. 6. The vascular sealing assembly of claim 1 wherein the wires are formed of a shape memory alloy. 7. The vascular sealing assembly of claim 1 wherein the wires are formed of a metal alloy selected from the group consisting of Nitinol and Elgiloy. 8. The vascular sealing assembly of claim 1 wherein the wires are formed of polymeric fiber. 9. The vascular sealing assembly of claim 1 wherein the wires comprise carbon fiber. 10. The vascular sealing assembly of claim 1 wherein the film comprises a flexible material selected from the group consisting of urethane, silicone, rubber, and polyvinyl chloride. 11. A vascular sealing assembly for closing an opening in a blood vessel, the assembly comprising: a) a sheath adapted to be positioned such that a distal end thereof is adjacent the opening in the blood vessel; b) a mandrel disposed within a lumen of the sheath, the mandrel being adapted to be positioned such that a distal length thereof is adjacent the distal end of the sheath; and c) a single collapsible sealing member attached to the mandrel and having a generally conical expanded configuration, the sealing member comprising a fluid-impervious film carried by a plurality of wires expanding radially outwardly from the mandrel such that an apex of the expanded conical sealing member is proximal relative to an expanded large end of the sealing member. 12. The vascular sealing assembly of claim 11 wherein the distal ends of the wires have atraumatic tips. 13. A vascular sealing assembly for closing an opening in a blood vessel, the assembly comprising: a) a sheath adapted to be positioned such that a distal end thereof is adjacent the opening in the blood vessel; b) a mandrel disposed within a lumen of the sheath, the mandrel being adapted to be positioned such that a distal length thereof is adjacent the distal end of the sheath; c) a collapsible sealing member comprising a fluid-impervious film carried by a plurality of wires, the wires being attached to the mandrel and expanding radially outward therefrom; and d) an introducer disposed around the sheath through which sealant is adapted to be delivered to the area adjacent the opening. 14. A vascular sealing assembly for closing an opening in a blood vessel, the assembly comprising: a) a sheath adapted to be positioned such that a distal end thereof is adjacent the opening in the blood vessel; b) a mandrel disposed within a lumen of the sheath, the mandrel being adapted to be positioned such that a distal length thereof is adjacent the distal end of the sheath; c) a collapsible sealing member comprising a fluid-impervious film carried by a plurality of wires, the wires being attached to the mandrel and expanding radially outward therefrom; and d) a syringe for injecting sealant to the area adjacent the opening.