Surgery – Means for introducing or removing material from body for... – With means for cutting – scarifying – or vibrating tissue
Patent
1997-11-25
1999-11-30
Coggins, Wynn Wood
Surgery
Means for introducing or removing material from body for...
With means for cutting, scarifying, or vibrating tissue
604 27, A61B 1720
Patent
active
059934093
ABSTRACT:
A surgical needle for use in phaco-emulsification procedures during eye surgery is disclosed. The surgical needle comprises a tubular principal section substantially concentric about a longitudinal principal axis and a tubular terminal section for channeling aspiration flow away from the surgical site. The terminal section is angled with respect to the principal section to access a greater area of the surgical site. The angled terminal section also presents an angled side face to the reciprocating motion when the surgical needle is reciprocated along the principal axis, causing increased cavitational emulsification. An aspiration bore at an extreme distal end of the terminal receives the aspiration flow. The aspiration bore has two planar end faces, one to minimize the possibility of accidental tearing of eye tissue, and the other to open up the aspiration bore to the direction of reciprocation and maximize the occlusion and mechanical cavitation of material.
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Supplement to the Feb. 1, 1994 issue of Ocular Surgery News, article entitled "Inventor of phaco hails current state of the art, sees ongoing role for technique".
Copy of International Search Report issued in connection with Applicant's corresponding PCT application S/N PCT/US97/22332 filed on Nov. 25, 1997.
Bogucki Raymond A.
Coggins Wynn Wood
Sirmons Kevin C.
Surgin Surgical Instrumentation Inc.
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