Patent ID: 6554843
Filing Date: 2003-04-29
Classification: A61F

Abstract:
A cataract instrument (1) comprising:a tubular body (10) having a tapering front end (11), a rear end (12), an aperture (110) defined at the tapering front end (11), an end cover (13) mounted on the rear end (12), and two pairs of openings (100, 102) oppositely defined through an outer periphery of the tubular body (10); a shaft (20) received in the tubular body (10), the shaft (20) having a front end (21), a rear end (22), two ring recesses (23, 24) defined in an outer periphery of the shaft (20) and near the front end (21), two collars (25) respectively secured in the ring recesses (23, 24), and a loop (26) formed at the front end (21); two flexible leaves (30) oppositely mounted on the tubular body (10), each flexible leaf (30) having a front end inserted into the respective front opening (100), a rear end inserted into the respective rear opening (102), a ring (31) formed at the front end and secured between the collars (25), and a flat portion (32) abutting an inner wall of the tubular body (10); and a resilient member (40) mounted between the end cover (13) and the rear end (22), whereby, when the flexible leaves (30) are pressed towards the tubular body, the shaft (20) is moved forward and the loop (26) is extended out from the aperture (110) to grip an opaque tissue in a patient's eye, and then the flexible leaves (30) are released, the shaft (20) is pulled backward by the resilient member (40) and the loop (26) is retracted in the tubular body (10) to remove the opaque tissue.