Tip for phacoemulsification
First Claim
1. A tip for phacoemulsification, comprising:
- a shaft having first and second ends;
a distal part arranged at the first end of the shaft and having an opening; and
a suction passage extending from the opening of the distal part to the second end of the shaft,wherein the suction passage has, at the distal part, a first section provided on the opening side and a second section provided on the first end side of the shaft,wherein the suction passage is narrowed in a staircase shape toward the shaft, in the first section, andwherein the suction passage is narrowed in a helical shape toward the shaft, in the second section.
1 Assignment
0 Petitions
Accused Products
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).
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Citations
4 Claims
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1. A tip for phacoemulsification, comprising:
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a shaft having first and second ends; a distal part arranged at the first end of the shaft and having an opening; and a suction passage extending from the opening of the distal part to the second end of the shaft, wherein the suction passage has, at the distal part, a first section provided on the opening side and a second section provided on the first end side of the shaft, wherein the suction passage is narrowed in a staircase shape toward the shaft, in the first section, and wherein the suction passage is narrowed in a helical shape toward the shaft, in the second section. - View Dependent Claims (2)
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3. A tip for phacoemulsification, comprising:
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a shaft having first and second ends; a distal part arranged at the first end of the shaft and having an opening; and a suction passage extending from the opening of the distal part to the second end of the shaft, wherein the suction passage has, at the distal part, a first section provided on the opening side and a second section provided on the first end side of the shaft, wherein the suction passage is narrowed in a helical shape toward the shaft, in the first section, and wherein the suction passage is narrowed in a staircase shape toward the shaft, in the second section. - View Dependent Claims (4)
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Specification