| 摘要 |
The invention provides an improved closure system for sealing a percutaneous puncture in the wall of a blood vessel or lumen and an improved blood vessel or lumen locating means. The closure system is, therefore, for dealing a percutaneous puncture (24) in the wall of a blood vessel or lumen (26) of a living being, the puncture (24) comprising an opening in the wall of the blood vessel or lumen (26) and a tract (24A) contiguous with the opening and extending through tissue overlying the vessel or lumen (26), said system comprising a closure device (22), said closure device (22) being arranged for location within a portion of the puncture at a desired position with respect thereto to enable the effective sealing of the puncture by said closure device (22), characterised by vessel or lumen location means (200, 300, 400), said vessel or lumen location means (200, 300, 400) being arranged for introduction into the puncture (24) to locate the wall of the blood vessel or lumen (26), said vessel or lumen location means (200, 300, 400) comprising means (204, 304, 404) for extension in the puncture tract to a position whereupon liquid within the vessel or lumen (26) is enabled to flow from the interior of the vessel or lumen (26) into the vessel or lumen location means (200, 300, 400) for detection thereof. |
