Abstract: Provided is a tip for phacoemulsification superior in ability to efficiently and smoothly crush and suck a crystalline lens. A tip (1) of the present invention includes: a shaft (2) having first and second ends (21, 22); a distal part (3) arranged at the first end (21) of the shaft (2) and having an opening (4); and a suction passage (5) extending from the opening (4) of the distal part (3) to the second end (22) of the shaft (2). The suction passage (5) is narrowed in a staircase shape (51) or/and a helical shape (53) from the opening (4) toward the shaft (2). It is preferable that one or a plurality of guide grooves (52) leading from the opening (4) toward the shaft (2) are further formed in an inner wall of the suction passage (5).

Abstract: Provided is a tip for phacoemulsification superior in ability to efficiently and smoothly crush and suck a crystalline lens. A tip (1) of the present invention includes: a shaft (2) having first and second ends (21, 22); a distal part (3) arranged at the first end (21) of the shaft (2) and having an opening (4); and a suction passage (5) extending from the opening (4) of the distal part (3) to the second end (22) of the shaft (2). The suction passage (5) is narrowed in a staircase shape (51) or/and a helical shape (53) from the opening (4) toward the shaft (2). It is preferable that one or a plurality of guide grooves (52) leading from the opening (4) toward the shaft (2) are further formed in an inner wall of the suction passage (5).