US 12,629,502 B1Granted

Venous drainage catheter for normothermic regional perfusion

OwnerKok Hoo Liminventor

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Abstract

A venous drainage catheter is an apparatus for normothermic regional perfusion (NRP) to prevent blood flow to the lower limbs when assessing organ function for patients. The apparatus includes a main cannula, an inflation cannula, and an occluding balloon. The main cannula draws blood from the inferior vena cava (IVC). The blood then flows into a reservoir of a cardiopulmonary bypass circuit (CPB) machine. Once inserted within the IVC and inflated, the occluding balloon prevents blood flow towards the lower limbs of the patient. The inflation cannula enables the occluding balloon to inflate and deflate while inserted within the IVC. A main cannula inlet receives blood flowing down within the IVC and the main cannula outlet disperses the blood towards the reservoir of the CPB machine. A plurality of holes positioned about the main cannula inlet drains the blood flow from the IVC to the reservoir.

Claims18

Dependent claims

A venous drainage catheter for normothermic regional perfusion comprising:

at least one main cannula;
an inflation cannula;
an occluding balloon;
the at least one main cannula comprising a main cannula body, a main cannula inlet, and a main cannula outlet;
the inflation cannula comprising an inflation cannula body, an inflation cannula inlet, and an inflation cannula outlet;
the inflation cannula body being laterally connected to the main cannula body;
the main cannula inlet further comprising a plurality of holes;
the inflation cannula body further comprising an inflation valve;
the inflation cannula inlet being positioned adjacent to the main cannula outlet;
the occluding ballon being positioned about the center along the length of the main cannula body;
each of the plurality of markings being equally spaced from one another;
the plurality of holes being radially distributed about the main cannula inlet;
the plurality of holes being distributed along only the main cannula inlet up until the occluding balloon;
the inflation cannula outlet hermetically traversing into the occluding balloon;
the inflation cannula inlet being positioned offset from the main cannula outlet;
the inflation valve being in fluid communication with the inflation cannula;
and
the inflation valve being positioned adjacent to the inflation cannula inlet.

15 more elements

A venous drainage catheter for normothermic regional perfusion comprising:

at least one main cannula;
an inflation cannula;
an occluding balloon;
the at least one main cannula comprising a main cannula body, a main cannula inlet, and a main cannula outlet;
the inflation cannula comprising an inflation cannula body, an inflation cannula inlet, and an inflation cannula outlet;
the inflation cannula body being laterally connected to the main cannula body;
the main cannula inlet further comprising a plurality of holes;
the inflation cannula body further comprising an inflation valve;
the inflation cannula inlet being positioned adjacent to the main cannula outlet;
the occluding ballon being positioned about the center along the length of the main cannula body;
the main cannula body further comprising a plurality of markings;
the plurality of markings traversing radially about the main cannula body;
the occluding balloon being laterally connected around the main cannula body
each of the plurality of markings being equally spaced from one another;
the plurality of markings being positioned adjacent to the occluding ballon;
the plurality of marking being positioned along the main cannula body in between the main cannula outlet and the occluding balloon;
the plurality of holes being radially distributed about the main cannula inlet;
the plurality of holes traversing through the main cannula inlet;
the plurality of holes being distributed only along the main cannula inlet up until the occluding balloon with none of the plurality of holes being distributed along the main cannula outlet;
the inflation cannula outlet hermetically traversing into the occluding balloon;
and
the inflation cannula inlet being positioned offset from the main cannula outlet.

19 more elements

Dependencies are inferred from the claim text.