Medical instrument with a flexible sealing system
AssigneeKarl Storz GmbH & Co. KG
InventorsElmar Teichtmann, Michael Sauer
Life of this patent
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Abstract
A medical instrument has a cannula, a seal disposed in the cannula. An expansion device serves for expanding the opening in the seal for guiding shafts of other instruments of greater diameter in a sealed manner through the expanded opening. The expansion device has an expansion cone with a plurality of slats mounted pivotably on an annular body at a first end thereof, a second end of the slats, being connected to the seal in an area of the opening. The slats can either be connected at its first ends to the annular body via spherical heads engaged into corresponding openings in the annular body or the slats are connected at their ends via film hinges to the annular body.
Claims42
A medical instrument having a cannula, a seal disposed in said cannula, said seal has an opening for guiding a shaft of another instrument through said seal and said cannula in a sealed manner, an expansion device for expanding said opening in said seal for guiding said shaft of said other instrument of greater diameter in a sealed manner through said expanded opening said expansion device having an expansion cone comprising a plurality of slats mounted pivotably on an annular body at a first end thereof, a second end of said slats, opposite to said first end, being connected to said seal in an area of said opening, said slats forming said expansion cone narrowing from a proximal to a distal end thereof, wherein said slats are connected at its first ends via film hinges to said annular body,
- wherein said seal extends in a distal direction away from a distal end of said expansion cone, and
- wherein said seal is designed as a pot-seal, a bottom of said pot-seal is connected to said distal end of said expansion cone.
A medical instrument having a cannula, a seal disposed in said cannula, said seal has an opening for guiding a shaft of another instrument through said seal and said cannula in a sealed manner, an expansion device for expanding said opening in said seal for guiding said shaft of said other instrument of greater diameter in a sealed manner through said expanded opening said expansion device having an expansion cone comprising a plurality of slats mounted pivotably on an annular body at a first end thereof, a second end of said slats, opposite to said first end, being connected to said seal in an area of said opening, said slats forming said expansion cone narrowing from a proximal to a distal end thereof, wherein said slats are connected at its first ends via film hinges to said annular body,
- wherein said seal surrounds said expansion cone, and
- wherein said seal is designed as a pot-seal, wherein said expansion cone is arranged within said pot-seal, and a distal end of said expansion cone is connected to said opening in a bottom of said pot-seal.
Dependencies are inferred from the claim text.