Balloon cannula with over-center clamp
First Claim
Patent Images
1. A skin seal for use with a cannula comprising:
- a frame having a locking collar and a flange on a distal end of the locking collar;
a latch assembly engageable with the locking collar such that movement of the patch assembly from a first position to a second position reduces an inner diameter of the locking collar; and
a flexible member extending from a distal surface of the flange.
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Abstract
There is disclosed a skin seal and anchoring cannula for use in surgery. The skin seal generally includes a distally extending flexible or compressable member and a latch assembly to secure the skin seal about a shaft of the cannula. Preferably the latch assembly is of an over the center clamp or lock design. The disclosed cannula is preferably a balloon tip cannula having an inflation port and a lumen communicating within the interior of the balloon so as to inflate the balloon. There is also a method of securing a cannula to tissue, preferably an abdominal wall, utilizing the disclosed balloon tip cannula and skin seal.
165 Citations
20 Claims
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1. A skin seal for use with a cannula comprising:
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a frame having a locking collar and a flange on a distal end of the locking collar;
a latch assembly engageable with the locking collar such that movement of the patch assembly from a first position to a second position reduces an inner diameter of the locking collar; and
a flexible member extending from a distal surface of the flange. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An anchoring cannula comprising:
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a cannula body having a seal;
a hollow cannula shaft extending distally from the cannula body;
an anchoring member affixed to a distal end of the shaft and movable between a relaxed and an expanded state; and
a skin seal movably mounted on the shaft. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A method of securing a cannula in tissue comprising:
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providing a cannula having a body and a shaft extending distally from the body;
an expandable member mounted on a distal end of the shaft; and
a skin seal movably mounted on the shaft;
inserting the distal end of the cannula through an incision in tissue to position the expandable member on a first side of the tissue;
expanding the expandable member;
moving the skin seal distally along the shaft to contact a second side of the tissue;
compressing the skin seal against the second side of the tissue; and
locking the skin seal in position on the shaft. - View Dependent Claims (19, 20)
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Specification