Cannula anchoring system
First Claim
1. A cannula anchoring system comprising:
- a cannula adapted to be inserted through a wall of an anatomical cavity and having a lumen for communication with the anatomical cavity;
a tissue penetrating member carried by said cannula at a position adjacent the cavity wall when said cannula is inserted through the cavity wall, said tissue penetrating member having a sharp distal end and being movable between a retracted position where said sharp distal end is non-exposed and an extended position where said sharp distal end is exposed; and
an operating mechanism coupled with said tissue penetrating member and operable to move said tissue penetrating member between said retracted and extended positions whereby said sharp distal end of said tissue penetrating member can be moved to penetrate the cavity wall to anchor said cannula therein.
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Abstract
A cannula anchoring system for anchoring a cannula in a cavity wall includes a cannula adapted to be inserted through the cavity wall and having a lumen for communication with the cavity and one or more tissue penetrating members carried by the cannula and movable between non-exposed, retracted positions and exposed extending positions where the tissue penetrating members penetrate the cavity wall adjacent the cannula to anchor the cannula therein. The anchoring system can be used for stabilizing the cannula longitudinally and in desired angular orientations, manipulating for lifting the cavity wall and/or in combination with lengths of suture material passed through or attached to the tissue penetrating members for puncture site closure.
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Citations
27 Claims
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1. A cannula anchoring system comprising:
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a cannula adapted to be inserted through a wall of an anatomical cavity and having a lumen for communication with the anatomical cavity; a tissue penetrating member carried by said cannula at a position adjacent the cavity wall when said cannula is inserted through the cavity wall, said tissue penetrating member having a sharp distal end and being movable between a retracted position where said sharp distal end is non-exposed and an extended position where said sharp distal end is exposed; and an operating mechanism coupled with said tissue penetrating member and operable to move said tissue penetrating member between said retracted and extended positions whereby said sharp distal end of said tissue penetrating member can be moved to penetrate the cavity wall to anchor said cannula therein. - View Dependent Claims (2, 3)
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4. A cannula anchoring system comprising:
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a cannula adapted to be inserted through a wall of an anatomical cavity and having a lumen for communication with the anatomical cavity; a tissue penetrating member carried by said cannula at a position adjacent the cavity wall when said cannula is inserted through the cavity wall, said tissue penetrating member being movable between a non-exposed, retracted position and an exposed, extended position; an operating mechanism coupled with said tissue penetrating member and operable to move said tissue penetrating member between said retracted and extended positions whereby said tissue penetrating member can be moved to penetrate the cavity wall to anchor said cannula therein; and a housing coupled with said cannula wherein said tissue penetrating members are needles having sharp distal ends and said sharp distal ends are disposed within said housing when said needles are in said retracted positions. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method of anchoring a cannula in a cavity wall comprising the steps of:
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inserting the cannula through a puncture site in the cavity wall at a desired angular orientation; and penetrating the tissue of the cavity wall adjacent the puncture site with sharp tissue penetrating members carried by the cannula to stabilize the cannula at the desired angular orientation.
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22. A method of anchoring a cannula in a cavity wall comprising the steps of:
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inserting the cannula through a puncture site in the cavity wall; and penetrating the tissue of the cavity wall adjacent the puncture site with sharp tissue penetrating members carried by the cannula wherein said penetrating step includes moving the tissue penetrating members from an unexposed retracted position to an exposed extended position in the tissue. - View Dependent Claims (23, 24, 25, 26, 27)
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Specification