Patent ID: 7422596

Claim:
A kit ( 1 ) comprising a medical fixing element ( 2 ) and a needle ( 3 ) for placing the fixing element ( 2 ), the needle ( 3 ) being able to be engaged through, or within a thickness of, a wall or walls ( 50 ) intended to be fitted with the fixing element ( 2 ), and the fixing element ( 2 ) having at least one stop part ( 5 ), able to bear against the wall ( 50 ), and a filiform deformable part ( 7 ) joined to said stop part ( 5 ); the fixing element ( 2 ) is elastically deformable at an area of a connection between said stop part ( 5 ) and said filiform deformable part ( 7 ) such that the stop part ( 5 ) is movable relative to the filiform deformable part ( 7 ) between a position of elastic deformation of said connection, in which the stop part ( 5 ) and the filiform deformable part ( 7 ) can be substantially inscribed within a cross section of the needle ( 3 ), and a position of nondeformation, in which the stop part ( 5 ) is able to bear against the wall or walls ( 50 ) and ensure anchoring of the fixing element ( 2 ); the kit ( 1 ) being characterized in that the needle ( 3 ) and the fixing element ( 2 ) comprise means ( 3 , 10 ; 30 ) for detachable connection of the stop part ( 5 ) to a proximal part ( 15 ) of the needle ( 3 ), the connection being sufficiently robust to ensure that the stop part ( 5 ) remains integral with the needle ( 3 ) during maneuvers of the kit ( 1 ) when taking hold of the kit ( 1 ), introducing it into the body of the patient, and inserting the needle ( 3 ) into said wall ( 50 ), but being releasable when a traction is exerted on the needle ( 3 ), in the direction of insertion of the needle, beyond a force threshold greater than the stresses exerted on the fixing element ( 2 ) by said maneuvers, the release of the fixing element making it possible to bring said stop part ( 5 ) to the position of nondeformation, by means of elastic return of said connection, the needle ( 3 ) has a proximal cavity ( 20 ) having a constant diameter along a proximal portion intended to receive the fixing element ( 2 ) and having a progressive reduction of the diameter along a distal portion; the fixing element ( 2 ) comprises a distal bar ( 5 ), a proximal bar ( 6 ) and an intermediate part ( 7 ) joining these bars ( 5 , 6 ) to one another; the distal bar ( 5 ) has a flange ( 10 ) whose diameter is slightly smaller than the diameter of said proximal portion of the cavity ( 20 ), so that the flange ( 10 ) can be introduced into and can slide in the proximal portion as far as the distal portion of the cavity ( 20 ) in which the flange ( 10 ) becomes wedged; the length of the intermediate part ( 7 ) is such that the proximal bar ( 6 ) comes into contact with the proximal end ( 21 ) of the needle ( 3 ) when the flange ( 10 ) is in a position producing sufficient wedging of the flange ( 10 ).