Retrograde cannula having manually retractable sealing member
First Claim
1. A retrograde cannula for delivering fluid to a patient'"'"'s vessel, the cannula comprising:
- a body arrangement defining a longitudinal axis and including coaxial inner and outer bodies, at least a portion of the inner body being axially slidable within the outer body, the inner body forming an infusion lumen extending between proximal and distal ends of the inner body for conducting fluid, the infusion lumen including at least one outlet adjacent the distal end of the inner body thereof for discharging the fluid; and
a sealing member disposed on the body arrangement adjacent a distal end of the outer body and being expandible into sealing relationship with the vessel, the sealing member including proximal and distal ends that are moved away from another to collapse the sealing member in response to axial sliding of the inner body within the outer body to reduce a profile of the cannula.
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Accused Products
Abstract
A retrograde cannula includes coaxial inner and outer bodies, wherein a least of the portion of the inner body is axially slidable within the outer body. The inner body forms an infusion lumen for conducting CPG. A sealing member is mounted adjacent a distal end of the outer body and is expandable into sealing relationship with a wall of a patient'"'"'s heart. The sealing member includes proximal and distal ends that are moved away from one another to collapse the sealing member in response to axial sliding of the inner body within the outer body to reduce a profile of the cannula, and thereby facilitate movement of the cannula through a patient'"'"'s body.
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Citations
14 Claims
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1. A retrograde cannula for delivering fluid to a patient'"'"'s vessel, the cannula comprising:
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a body arrangement defining a longitudinal axis and including coaxial inner and outer bodies, at least a portion of the inner body being axially slidable within the outer body, the inner body forming an infusion lumen extending between proximal and distal ends of the inner body for conducting fluid, the infusion lumen including at least one outlet adjacent the distal end of the inner body thereof for discharging the fluid; and
a sealing member disposed on the body arrangement adjacent a distal end of the outer body and being expandible into sealing relationship with the vessel, the sealing member including proximal and distal ends that are moved away from another to collapse the sealing member in response to axial sliding of the inner body within the outer body to reduce a profile of the cannula. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of inserting a retrograde cannula into a vessel of a patient'"'"'s body, the cannula comprising a body arrangement including coaxial inner and outer bodies, the inner body being axially slidable within the outer body, the inner body forming an infusion lumen extending between proximal and distal ends of the inner body for conducting pressurized fluid, the inner body including an outlet adjacent the distal end thereof for discharging the fluid, and a sealing member disposed on the body arrangement adjacent a distal end of the outer body and being expandible into sealing relationship with the vessel, the sealing member having proximal and distal ends that are moved away from one another to collapse the sealing member in response to axial sliding of the inner body within the outer body to reduce a profile of the cannula, the method comprising the steps of:
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A) axially sliding the inner body within the outer body in a first direction to move the proximal and distal ends of the sealing member away from one another for collapsing the sealing member to a smaller profile;
B) inserting the reduced-profile cannula into the vessel; and
C) axially sliding the inner body within the outer body in a second direction to move the proximal and distal ends of the sealing member toward one another for permitting the sealing member to expand outwardly. - View Dependent Claims (11, 12, 13, 14)
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Specification