Medical device for entrapping and extracting objects from body cavities

A medical device for entrapping and retaining an object located in a body for its extraction therefrom, the device comprising a basket-filter having a proximal end and a distal end and constituted by a plurality of filaments extending from the proximal end towards the distal end;

• the filaments are bound together in the vicinity of the proximal end to form a plurality of main branches, each main branch comprising at least two filaments, the filaments are entangled together in the vicinity of the distal end;
• each main branch has a ramification point at which it ramifies into at least two single filaments extending from the ramification point towards the basket distal end of the basket-filter;
• one of the single filaments of said at least two single filaments extending from the ramification point extends in the form of a right spiral, whereas another single filament of said at least two single filaments extending from said ramification point extends in the form of a left spiral;
• the filaments extending from the ramification points interlace with each other, thereby forming a mesh between the branching point and the basket proximal end having a density greater than 5.1 crossover points per inch.