Anti-Reflux Plug Forming Detachable Tip Microcatheter

A medical device, comprising:

• a microcatheter tip assembly configured to couple to an end of a microcatheter, the microcatheter tip assembly including:
• a body defining at least one lateral hole and a loading region, and
• an opening in a first end of the microcatheter tip assembly;
• and
• a membrane carrier configured to be disposed within the loading region of the microcatheter tip assembly, the membrane carrier including:
• a body defining an opening, and
• a membrane covering the opening in the membrane carrier, the membrane being configured to rupture in response to a force applied to the membrane.

A method, comprising:

• inserting a medical device into a vessel, the medical device including a base microcatheter and a detachable tip assembly that is removably coupled to the base microcatheter, the detachable tip assembly comprising a plurality of lateral holes;
• flowing an embolic material through the base microcatheter, the detachable tip assembly, and the plurality of lateral holes to form an anti-reflux plug in the vessel around at least a portion of the detachable tip assembly;
• flowing the embolic material through an end hole of the detachable tip assembly anterograde to the anti-reflux plug;
• detaching the detachable tip assembly from the base microcatheter;
• and
• removing the base microcatheter from the vessel.