Device And Method For Closure Of A Body Lumen

Abstract

A medical device and method for closure of a puncture in a body lumen are disclosed. The device has an aggregate ( 10 ) of a support structure ( 20 ) and a substantially fluid tight patch member ( 30 ) attached thereto at an attachment unit ( 40 ). The aggregate has a first, temporary delivery shape, for delivery to an interior of said body lumen and to be subsequently subjected to a change of shape to a second shape, which is a tubular shape. When delivered in said body lumen, the patch member is arranged radially outside of said tubular support structure and arranged towards an inner tissue wall of the body lumen. The aggregate is the detached from a delivery device and said puncture is intraluminally closed in a leakage tight manner, advantageously supported by a physiological pressure of a body fluid in said body lumen. Rotational orientation is detectable by fiducial markers. A compact delivery configuration is provided by the patch being attached to the support structure at a single radial attachment position only.

What is claimed is: 
     
         1 . A method of closing an opening in a body lumen, such as a blood vessel, in a patient, by a medical device, said method comprising providing a medical device for closing said opening in said body lumen, said method comprising:
 providing an elongate delivery unit including a delivery wire having a distal end; and said medical device being an aggregate including:   a support structure being a single wire and having a first shape, which is an elongate substantially straight temporary delivery shape, for delivery to an interior of said body lumen through said opening and to be subsequently controllably subjected to a change of shape to a second shape, which is a helically coiled tubular shape, when delivered in said body lumen, and   a patch member being an elongate collar-like patch attached to said support structure at an intermediate portion between two opposite ends thereof, said patch member comprising a plurality of patch sub units arranged along a length of the single wire, the plurality of patch sub units being arranged at a distance from each other, wherein the patch sub units are overlapping each other in a radial section of the tubular shape thereby forming said patch member; wherein   said distal end of said delivery wire is radially releasably attached to said aggregate at an attachment position intermediate between ends of said patch member and detachable therefrom upon deployment of said aggregate in said body lumen;   with at least one fiducial marker, identifying a rotational orientation of said patch member within said aggregate in relation to said opening;   rotating said aggregate with said patch member until said patch member is oriented towards said opening, and subsequently arranging said patch member towards an inner tissue wall of said body lumen at said opening of said body lumen so that said patch member is overlapping between turns of said helically coiled support structure and extending over said opening, and   drawing said delivery unit in a direction out of said opening and tightening said patch member thereby controllably sealing off said opening by said patch member; and   releasing said delivery unit from said aggregate.