A basket-like medical treating tool for removing occlusive material

摘要

In a medical treatment tool (1, 1A, 1B), a flexible linear wire forms a main linear wire portion (2) provided by a wire-stranded helical hollow tube (6) coated with an outer protective layer (8). An operational core elongation (4) is slidably inserted into the main linear wire portion (2) of the wire-stranded helical hollow tube (6). A front end of the main linear wire portion (2) is connected to a front end of the operational core elongation (4), and a rear end of the operational core elongation (4) is connected to a hand access portion (5) placed at a rear end of the main linear wire portion (2). A diametrically expandable portion (3) is formed at a distal end portion of the main linear wire portion (2) by exposing the wire-stranded helical hollow tube (6) outside from the outer protective layer (8). An outer surface of the wire-stranded helical hollow tube (6) of the diametrically expandable portion (3) is at least diametrically reduced, and the diametrically expandable portion (3) forms a basket-like configuration which is shiftable into a diametrically shrunken configuration due to a relative siliding displacement between the operational core elongation (4) and the main linear wire portion (2) so as to efficiently retrieve foreign matters within the human somatic cavity. <IMAGE>