Sheath and cannula combination devices for selectively directing blood flow and enabling interventional medical procedures

A sheath and cannula combination device for selectively directing blood flow and enabling an interventional medical procedure, the sheath and cannula combination device comprising:

• an elongated shaft defining a longitudinal axis and comprising a distal region having a first outlet, a proximal region having a first inlet, and a first lumen extending between and fluidically coupling the first outlet and the first inlet along the longitudinal axis, the distal region configured to be in fluid communication with a patient's vasculature, the first lumen sized and shaped to permit insertion of an interventional medical device therethrough in a sheath mode for performing the interventional medical procedure;
• a connector hub at the proximal region of the elongated shaft, the connector hub comprising a collinear port configured to receive the interventional medical device therethrough, a proximal end of the collinear port defining the first inlet of the elongated shaft;
• a hemostatic valve configured to be removably coupled to the first inlet, the hemostatic valve comprising a locking mechanism configured to sealably receive the interventional medical device therethrough in the sheath mode;
• a sidearm configured to be fluidically coupled to the first lumen at the proximal region of the elongated shaft, the sidearm angled relative to the longitudinal axis of the elongated shaft, the sidearm defining a second outlet, a second inlet, and a second lumen extending between the second inlet and the second outlet, the second lumen sized and shaped to direct the blood flow from the sidearm into the first lumen of the elongated shaft and out the first outlet in a cannula mode;
• and
• a collinear port cap configured to be removably coupled to the proximal end of the collinear port to seal the first inlet when the hemostatic valve has been removed from the first inlet, the collinear port cap comprising an obturator sized and shaped to be disposed within at least a portion of the first lumen to prevent pooling of blood within the at least the portion of the first lumen, a distal end of the obturator comprising a beveled geometry corresponding to a geometry of the second lumen of the sidearm such that the obturator does not obstruct the blood flow between the second lumen and the first lumen in the cannula mode.