Arterial cannula which allows proximal and distal perfusion within a cannulated vessel

A cannula structure configured for cannulating a tubular anatomical vessel of a body of a patient, the tubular anatomical vessel having a superficial wall, the cannula structure comprising:

• a first tube insertable into the tubular anatomical vessel through a cannulation point, the first tube having each of a lumen and an elongate length, the lumen extending through the first tube, the lumen for infusing and channeling into the tubular anatomical vessel a fluid, the first tube comprising:
• a distal fluid input configured for receiving the fluid;
• a first segment having a first lumen, the first lumen extending through the first segment, the first lumen aligned with the lumen of the first tube, the first lumen fluidically coupled to the distal fluid input, wherein the first segment has a lengthwise axis that extends through the first lumen, wherein the first segment is configured for residing entirely internal to the cannulated tubular anatomical vessel, and wherein a distal portion of the first segment includes a flexible or semi-flexible angulatable section;
• a second segment having a second lumen aligned with and integrally fluidically coupled to the first lumen, wherein the second segment is distal to the first segment and the flexible or semi-flexible angulatable section, and wherein the first and second lumens form the lumen of the first tube;
• a plurality of fluid outputs coupled to the distal fluid input and configured for discharging the fluid into the tubular anatomical vessel, wherein the plurality of fluid outputs comprises:
• an exit opening disposed near or at a proximal end of the first segment, the exit opening configured for outputting or discharging a first portion of the fluid into the tubular anatomical vessel along a proximal flow direction that is (a) toward the patient's heart, and (b) parallel to the lengthwise axis of the first segment;
• and
• a set of fenestrations carried by distal portions of the first segment along portions of a length of the first segment and about portions of a circumference of the first segment on the flexible or semi-flexible angulatable section of the first segment, the set of fenestrations configured for outputting or discharging a second portion of the fluid into the tubular anatomical vessel such that the second portion of the fluid flows along a distal flow direction that is (a) away from the patient's heart, (b) parallel to the lengthwise axis of the first segment, and (c) opposite to the proximal flow direction;
• and
• an anchoring assembly proximal to the second segment of the first tube and carried by the first segment of the first tube near or adjacent and distal to the set of fenestrations, wherein the anchoring assembly is configured for engagement with the superficial wall of the cannulated tubular anatomical vessel adjacent or just internal to the cannulation point, wherein the anchoring assembly comprises at least one outwardly or radially displaceable structure that is coupled to an inflation tube, and which is outwardly or radially displaceable away from the first lumen beyond an exterior surface of the first segment in response to clinician application of a positive pressure that introduces air or liquid into the anchoring assembly through the inflation tube, and wherein the anchoring assembly has a distal portion disposed closest to a distal end of the cannula structure at a first circumferential position about the first segment and a proximal portion disposed closest to a proximal end of the cannula structure at a distinct second circumferential position about the first segment such that the distal portion of the anchoring assembly is closer to the second segment of the first tube than the proximal portion of the anchoring assembly, the anchoring assembly is arranged obliquely with respect to the lengthwise axis of the first segment prior to angulation of the flexible or semi-flexible angulatable section of the first segment, and each fenestration carried by the distal portions of the first segment along the portions of the length of the first segment and about the portions of the circumference of the first segment on the flexible or semi-flexible angulatable section of the first segment is disposed proximally adjacent or contiguous to the anchoring assembly after the cannula structure has been inserted into and anchored within the cannulated tubular anatomical vessel, and further wherein the anchoring assembly comprises an inflatable cuff that is disposed about the first segment, wherein the inflation tube is fluidically coupled to a one-way valve assembly and the inflatable cuff, wherein the inflatable cuff comprises an elliptical or circular ring type structure that comprises an inner layer, an outer layer, a chamber between the inner layer and the outer layer, and a plurality of flange members integrally carried by or formed from portions of the outer layer or structurally and/or fluidically coupled to or formed from portions of the outer layer.

A cannula structure configured for cannulating a tubular anatomical vessel of a body of a patient, the tubular anatomical vessel having a superficial wall, the cannula structure comprising:

• a first tube insertable into the tubular anatomical vessel through a cannulation point, the first tube having each of a lumen and an elongate length, the lumen extending through the first tube, the lumen for infusing and channeling into the tubular anatomical vessel a fluid, the first tube comprising:
• a distal fluid input configured for receiving the fluid;
• a first segment having a first lumen, the first lumen extending through the first segment, the first lumen aligned with the lumen of the first tube, the first lumen fluidically coupled to the distal fluid input, wherein the first segment has a lengthwise axis that extends through the first lumen, wherein the first segment is configured for residing entirely internal to the cannulated tubular anatomical vessel, and wherein a distal portion of the first segment includes a flexible or semi-flexible angulatable section;
• a second segment having a second lumen aligned with and integrally fluidically coupled to the first lumen, wherein the second segment is distal to the first segment and the flexible or semi-flexible angulatable section, and wherein the first and second lumens form the lumen of the first tube;
• a plurality of fluid outputs coupled to the distal fluid input and configured for discharging the fluid into the tubular anatomical vessel, wherein the plurality of fluid outputs comprises:
• an exit opening disposed near or at a proximal end of the first segment, the exit opening configured for outputting or discharging a first portion of the fluid into the tubular anatomical vessel along a proximal flow direction that is (a) toward the patient's heart, and (b) parallel to the lengthwise axis of the first segment;
• and
• a set of fenestrations carried by distal portions of the first segment along portions of a length of the first segment and about portions of a circumference of the first segment on the flexible or semi-flexible angulatable section of the first segment, the set of fenestrations configured for outputting or discharging a second portion of the fluid into the tubular anatomical vessel such that the second portion of the fluid flows along a distal flow direction that is (a) away from the patient's heart, (b) parallel to the lengthwise axis of the first segment, and (c) opposite to the proximal flow direction;
• and
• an anchoring assembly proximal to the second segment of the first tube and carried by the first segment of the first tube near or adjacent and distal to the set of fenestrations, wherein the anchoring assembly is configured for engagement with the superficial wall of the cannulated tubular anatomical vessel adjacent or just internal to the cannulation point, wherein the anchoring assembly comprises at least one outwardly or radially displaceable structure that is coupled to an inflation tube, and which is outwardly or radially displaceable away from the first lumen beyond an exterior surface of the first segment in response to clinician application of a positive pressure that introduces air or liquid into the anchoring assembly through the inflation tube, and wherein the anchoring assembly has a distal portion disposed closest to a distal end of the cannula structure at a first circumferential position about the first segment and a proximal portion disposed closest to a proximal end of the cannula structure at a distinct second circumferential position about the first segment such that the distal portion of the anchoring assembly is closer to the second segment of the first tube than the proximal portion of the anchoring assembly, the anchoring assembly is arranged obliquely with respect to the lengthwise axis of the first segment prior to angulation of the flexible or semi-flexible angulatable section of the first segment, and each fenestration carried by the distal portions of the first segment along the portions of the length of the first segment and about the portions of the circumference of the first segment on the flexible or semi-flexible angulatable section of the first segment is disposed proximally adjacent or contiguous to the anchoring assembly after the cannula structure has been inserted into and anchored within the cannulated tubular anatomical vessel, and further wherein the anchoring assembly comprises an inflatable cuff that comprises an elliptical or circular ring type structure, wherein the at least one outwardly or radially displaceable structure is formed as an outer layer of the inflatable cuff and a plurality of flange members carried by the outer layer and which are configured to protrude away from the first lumen in response to inflation of the inflatable cuff.