Surgery – Truss – Perineal
Patent
1992-02-18
1993-12-07
Apley, Richard J.
Surgery
Truss
Perineal
606107, 623 4, A61B 1702, A61F 214
Patent
active
052675530
ABSTRACT:
A pupil expander has an elongated plastic resilient hollow ring which is C-shaped in cross section, and formed into a partial circle. The ends of the ring member have perforated tabs thereon, and are connected together by a strap. The pupil expander is compressed into an elongated shape. Forcep tips are inserted into the ends of the ring member to hold the ring member during insertion of the expander into the anterior chamber of the eye through an incision in the eye outside the location of the iris. An elongated tool can be inserted into the eye if required to facilitate the engagement of the ring member with the iris. The ring member is allowed to gradually expand and engage the inner periphery of the iris and to be received within an elongated outer peripheral opening in the ring member as the forcep tips are gradually withdrawn. The pupil expander is removed from the eye by cutting the strap adjacent one of the tabs, grasping the tab adjacent the cut, and longitudinally pulling the expander through the incision through which it was inserted.
REFERENCES:
patent: 2812758 (1957-11-01), Blumenschein
patent: 3807393 (1974-04-01), McDonald
patent: 4387706 (1983-06-01), Glass
patent: 4452235 (1984-06-01), Reynolds
patent: 4782820 (1988-11-01), Woods
patent: 5163419 (1992-11-01), Goldman
patent: 5188125 (1993-02-01), Kilmer et al.
Apley Richard J.
Maraglio Donna L.
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