Multiport trocar

A trocar adapted to extend across the body wall into a body cavity, forming a seal around an instrument inserted through the trocar, comprises a cannula having a first axis extending between proximal and distal ends. A valve housing attached to the proximal end of the cannula forms a working channel...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	HART CHARLES C, TANGHERLINI VINCENT C
Format:	Patent
Sprache:	eng
Schlagworte:	DIAGNOSIS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HUMAN NECESSITIES HYGIENE IDENTIFICATION MEDICAL OR VETERINARY SCIENCE SURGERY TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS
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Beschreibung
Zusammenfassung:	A trocar adapted to extend across the body wall into a body cavity, forming a seal around an instrument inserted through the trocar, comprises a cannula having a first axis extending between proximal and distal ends. A valve housing attached to the proximal end of the cannula forms a working channel with the cannula and includes a rigid housing portion and a flexible housing portion. First and second septum valves are formed in an end wall of the flexible housing portion and form separate valve sets with associated zero closure valves disposed within the valve housing. The valve sets are sized and configured accommodating different ranges of instrument diameters. The first and second septum valves are offset from the axis of the cannula in normal positions but are movable to positions more aligned with the axis of the cannula, due to elastomeric characteristics of the flexible housing.