lâmina de trocarte micro-vitreorretiniana

Embodiments of a micro-vitreoretinal trocar blade may have a top surface and a bottom surface that converge to form cutting edges. Each of the top surface and bottom surface have a large rounded apex to maximize the area of the blade. Each surface also has concave regions that may form the cutting e...

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Bibliographische Detailangaben
Hauptverfasser:	HARRY EDWARD FALLER, CHRISTOPHER L. MCCOLLAM, DYSON W. HICKINGBOTHAM, RANDAL L. BERARDI, WILLARD L.SAUER, GREGORY A. AUCHTER, JASON H. SAFABASH, JACK R. AULD
Format:	Patent
Sprache:	por
Schlagworte:	BANDAGES, DRESSINGS OR ABSORBENT PADS DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS DIAGNOSIS FILTERS IMPLANTABLE INTO BLOOD VESSELS FIRST-AID KITS FOMENTATION HUMAN NECESSITIES HYGIENE IDENTIFICATION MEDICAL OR VETERINARY SCIENCE ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES PROSTHESES SURGERY TREATMENT OR PROTECTION OF EYES OR EARS
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Beschreibung
Zusammenfassung:	Embodiments of a micro-vitreoretinal trocar blade may have a top surface and a bottom surface that converge to form cutting edges. Each of the top surface and bottom surface have a large rounded apex to maximize the area of the blade. Each surface also has concave regions that may form the cutting edges. Advancing the MVR trocar blade into tissue causes the tissue to contact the apexes of the top and bottom surfaces. The apexes draw the tissue into contact with the cutting edges. The cutting edges incise the tissue such that the incision is sized to accommodate a trocar cannula. The geometry of the top surface and bottom surface ensure that the features of the blade do not protrude radially outside of the diametral envelope of the shaft.