Ophthalmic surgical instrument and method for manufacturing an ophthalmic surgical instrument

摘要

PROBLEM TO BE SOLVED: To provide a technique capable of suppressing excessive deformation of a brush and at the same time increasing the suction efficiency when an ophthalmic surgical instrument is used with an intraocular insertion part inserted into an eye.SOLUTION: An ophthalmic surgical instrument is used for ophthalmic surgery and comprises an intraocular insertion part 2 which is inserted into an eye when the ophthalmic surgery is conducted. The intraocular insertion part 2 has: a hollow needle 2a; and a cylindrical brush 2b provided at a tip part of the needle 2a. The brush 2b includes: a projection part 7 projecting from the tip part of the needle 2a; and a stationary part 8 fixed to an inner peripheral side of the needle 2a. The needle 2a has a penetration part 6 in a peripheral wall of a tip side of the needle 2a. In the stationary part 8 of the brush 2b, an implantation part 9 to be implanted into the penetration part 6 is formed. The needle 2a and the brush 2b are jointed integrally by the penetration part 6 and the implantation part 9. The thickness dimension T1 of the portion in which the implantation part 9 exists in the stationary part 8 is set larger than the thickness dimensions T2 of the other portions.