PROBLEM TO BE SOLVED: To provide a device and system for closure of a perivalvular leak.SOLUTION: Described are a device and method for medically sealing a perivalvular leak associated with implanted valves. For example, a bioresorbable tissue infiltratable sheet is provided for insertion through a perivalvular leak. A filament extending through the sheet is also provided which causes the sheet to gather around the filament on either side of the perivalvular leak when the filament is pulled. The gathered position of the sheet may be secured by a series of stops and/or use of a capping member.COPYRIGHT: (C)2015,JPO&INPIT