Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1994-07-14
1996-10-29
Hirsch, Paul J.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604169, A61M 3922, A61M 3926
Patent
active
055692052
ABSTRACT:
A trocar adapted to extend across the body wall into a body cavity, and to form a seal around an instrument inserted through the trocar comprises a cannula having a first axis extending between a proximal end and a distal end. 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 to accommodate different ranges of instrument diameters. The first and second septum valves are offset from the axis of the cannula in their natural positions but are movable to positions more aligned with the axis of the cannula, due to elastomeric characteristics of the flexible housing portions. With multiple valve sets, the trocar can accommodate the simultaneous insertion of two instruments, as well as a full range of instrument diameters.
REFERENCES:
patent: 3994287 (1976-11-01), Turp et al.
patent: 4112932 (1978-09-01), Chiulli
patent: 4180068 (1979-12-01), Jacobsen et al.
patent: 4379458 (1983-04-01), Bauer et al.
patent: 4601710 (1986-07-01), Moll
patent: 4654030 (1987-03-01), Moll et al.
patent: 4869717 (1989-09-01), Adair
patent: 4929235 (1990-05-01), Merry et al.
patent: 4931042 (1990-06-01), Holmes et al.
patent: 5066288 (1991-11-01), Deniega et al.
patent: 5116353 (1992-05-01), Green
patent: 5197955 (1993-03-01), Stephens et al.
patent: 5211633 (1993-05-01), Stouder, Jr.
patent: 5269763 (1993-12-01), Boehmer et al.
patent: 5273545 (1993-12-01), Hunt et al.
patent: 5300036 (1994-04-01), Mueller et al.
Hart Charles C.
Tangherlini Vincent C.
Hirsch Paul J.
Myers Richard L.
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