To and fro washing system and method

Details To and fro washing system and method To and fro washing system and method

1987-12-30

1989-04-04

Rosenbaum, C. Fred

Surgery

Truss

Pad

604 27, 604 73, 604151, A61B 1700

Patent

active

048175994

ABSTRACT:
An autoclavable to and fro washing system and method of operation for use in extracapsular cataract surgery with and without infusion. A hand-held, motorized pump unit includes a reversing peristaltic pump for moving an IV solution back and forth through a hollow probe tip keeping the anterior chamber of the eye filled with fluid and safe from collapse, while the cortex of the cataract is emulsified using to and fro washing through the hollow probe tip and then flushed from the eye by the IV solution. Infusion and to and fro washing flow and pressure rates are proportionally varied by a switch on the hand held pump unit, or alternatively by a foot switch. An alternative embodiment includes a smaller and lighter hand piece, including a peristaltic pump and motor located remote from a hand piece and probe tip.

REFERENCES:
patent: 4275726 (1981-06-01), Schael
patent: 4314560 (1982-02-01), Helfgott et al.
patent: 4424055 (1984-01-01), Herman
patent: 4482345 (1984-11-01), Chow et al.
Stedman's Medical Dictionary, 24th Edition, p. 1064.
Ophthalmic Surgery, "A New Infusion-Aspiration System for Extracapsular Cataract Surgery", Aug., 1987, vol. 18, No. 8, pp. 618-620.

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