Trocar with floating septum seal

Details Trocar with floating septum seal Trocar with floating septum seal

1993-06-15

1995-01-31

Hirsch, Paul J.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604256, A61M 3904

Patent

active

053855531

ABSTRACT:
A trocar having a cannula and housing which define an access channel, is configured to receive a surgical instrument. A flexible valve disposed in the channel includes first portions which define an orifice through the valve and second portions which are disposed outwardly of the first portions. The second portions are provided with a greater flexibility so that when the instrument is inserted off-axis, the second portions of the valve will deform before the first portions causing the orifice to move without substantial deformation to the off-axis location. Alternatively, levers engaging the first portions of the valve can be pivotally mounted on a floating ring to move the substantially undeformed orifice to the off-axis location. An associated method includes the steps of deforming the second portions of the valve without substantially deforming the first portions of the valve to move the orifice into axial alignment with the instrument.

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