Method of pressurizing the right ventricle of the heart

Claim 1

A method of pressurizing the right ventricle of the heart, the method comprising: providing a multi-lumen cannula comprising: a first sub-cannula including a proximal end, a distal end, a lumen extending between the proximal and distal ends, and proximal and distal fluid apertures formed in the lumen; and a second sub-cannula including a proximal end, a distal end, a lumen extending between the proximal and distal ends, and proximal and distal fluid apertures formed in a lumen, wherein the distal fluid apertures of the two lumens are spaced from one another along the axial length of the multi-lumen cannula; inserting the cannula into the vasculature system of a patient so that the distal fluid aperture of the lumen of the second sub-cannula is received in one of the right atrium, the superior vena cava, and the inferior vena cava, and the distal fluid aperture of the lumen of the first sub-cannula is received in the right ventricle; and fluidly connecting the proximal fluid apertures of the first and second sub-cannulas to a fluid conducting pump for moving fluid through the two sub-cannulas.

Claim 2

A method of pressurizing the right ventricle of the heart, the method comprising: providing a multi-lumen cannula comprising: a first sub-cannula including a proximal end, a distal end, a lumen extending between the proximal and distal ends, and proximal and distal fluid apertures formed in the lumen; and a second sub-cannula including a proximal end, a distal end, a lumen extending between the proximal and distal ends, and proximal and distal fluid apertures formed in a lumen, wherein the distal fluid apertures of the two lumens are spaced from one another along the axial length of the multi-lumen cannula; inserting the cannula into the vasculature system of a patient so that the distal fluid aperture of the lumen of the second sub-cannula is received in one of the right atrium, the superior vena cava, and the inferior vena cava, and the distal fluid aperture of the lumen of the first sub-cannula is received in the right ventricle; and fluidly connecting the proximal fluid apertures of the first and second sub-cannulas to a fluid conducting pump for moving fluid through the two sub-cannulas.

Claim 14

A method of placing a cannula into the heart, the method comprising: providing a multi-lumen cannula comprising: a first sub-cannula including a proximal end, a distal end, a lumen extending between the proximal and distal ends, and proximal and distal fluid apertures formed in the lumen; and a second sub-cannula comprising a proximal end, a distal end, a lumen extending between the proximal and distal ends, and proximal and distal fluid apertures formed in the lumen, wherein the distal fluid apertures of the two lumens are spaced from one another along the axial length of the multi-lumen cannula and the distal tip of the first sub-cannula having a first axis, the distal end of the second sub-cannula is on a second sub-cannula tip having a second axis, and the first axis and second axis are not aligned; inserting the cannula into the vasculature system of a patient so that the distal fluid aperture of the lumen of the second sub-cannula is received in one of the right atrium, the superior vena cava, and the inferior vena cava; and fluidly connecting the proximal fluid apertures of the first and second sub-cannulas to a fluid conducting pump for moving fluid through the two sub-cannulas.

Claim 15

A method of placing a cannula into the heart, the method comprising: providing a multi-lumen cannula comprising: a first sub-cannula including a proximal end, a distal end, a lumen extending between the proximal and distal ends, and proximal and distal fluid apertures formed in the lumen; and a second sub-cannula comprising a proximal end, a distal end, a lumen extending between the proximal and distal ends, and proximal and distal fluid apertures formed in the lumen, wherein the distal fluid apertures of the two lumens are spaced from one another along the axial length of the multi-lumen cannula and the distal tip of the first sub-cannula having a first axis, the distal end of the second sub-cannula is on a second sub-cannula tip having a second axis, and the first axis and second axis are not aligned; inserting the cannula into the vasculature system of a patient so that the distal fluid aperture of the lumen of the second sub-cannula is received in one of the right atrium, the superior vena cava, and the inferior vena cava; and fluidly connecting the proximal fluid apertures of the first and second sub-cannulas to a fluid conducting pump for moving fluid through the two sub-cannulas.

Claim 21

A method of pressurizing the right ventricle of the heart, the method comprising: providing a multi-lumen cannula comprising: a first sub-cannula including a proximal end, a distal end, a lumen extending between the proximal and distal ends, and proximal and distal fluid apertures formed in the lumen, a portion of the first sub-cannula being circular in cross section and another portion being non-circular; and a second sub-cannula including a proximal end, a distal end, a lumen extending between the proximal and distal ends, and proximal and distal fluid apertures formed in a lumen, a portion of the sub-cannula being circular in cross section and another portion being non-circular, wherein the distal fluid apertures of the two lumens are spaced from one another along the axial length of the multi-lumen cannula and the non-circular portion of the first sub-cannula is adhered to the non-circular portion of the second sub-cannula so that the cross section of the adhered portions of the first and second sub-cannulas is substantially circular; inserting the cannula into the vasculature system of a patient so that the distal fluid aperture of the lumen of the first sub-cannula is received in one of the right atrium, the superior vena cava, and the inferior vena cava, and the distal fluid aperture of the lumen of the second sub-cannula is received in the right ventricle; fluidly connecting the proximal fluid apertures of the first and second sub-cannulas to a fluid conducting pump for moving fluid through the two sub-cannulas from one of the right atrium, the superior vena cava, and the inferior vena cava to the right ventricle.

Claim 22

A method of pressurizing the right ventricle of the heart, the method comprising: providing a multi-lumen cannula comprising: a first sub-cannula including a proximal end, a distal end, a lumen extending between the proximal and distal ends, and proximal and distal fluid apertures formed in the lumen, a portion of the first sub-cannula being circular in cross section and another portion being non-circular; and a second sub-cannula including a proximal end, a distal end, a lumen extending between the proximal and distal ends, and proximal and distal fluid apertures formed in a lumen, a portion of the sub-cannula being circular in cross section and another portion being non-circular, wherein the distal fluid apertures of the two lumens are spaced from one another along the axial length of the multi-lumen cannula and the non-circular portion of the first sub-cannula is adhered to the non-circular portion of the second sub-cannula so that the cross section of the adhered portions of the first and second sub-cannulas is substantially circular; inserting the cannula into the vasculature system of a patient so that the distal fluid aperture of the lumen of the first sub-cannula is received in one of the right atrium, the superior vena cava, and the inferior vena cava, and the distal fluid aperture of the lumen of the second sub-cannula is received in the right ventricle; fluidly connecting the proximal fluid apertures of the first and second sub-cannulas to a fluid conducting pump for moving fluid through the two sub-cannulas from one of the right atrium, the superior vena cava, and the inferior vena cava to the right ventricle.