Modular aortic arch prosthetic assembly and method of use thereof

A prosthetic assembly configured for endovascular placement within an aortic arch, the prosthetic assembly comprising:

• a proximal aortic stent-graft prosthesis including a tubular graft, at least one stent coupled to the tubular graft, and a coupling extending from the tubular graft, wherein in an expanded configuration the proximal aortic stent-graft prosthesis is configured to have an outer diameter that is substantially similar to an inner diameter of the aortic arch;
• a distal aortic stent-graft prosthesis including a tubular graft, at least one stent coupled to the tubular graft, and a coupling extending from the tubular graft, the coupling being configured to be positioned distal to an ostium of a branch vessel when deployed in situ, wherein in an expanded configuration the distal aortic stent-graft prosthesis is configured to have an outer diameter along an entire length thereof that is substantially similar to an inner diameter of the aortic arch;
• a first branch stent-graft prosthesis including a tubular graft and at least one stent coupled to the tubular graft, wherein the first branch stent-graft prosthesis is configured to be disposed through the coupling of the proximal aortic stent-graft prosthesis when the proximal aortic stent-graft prosthesis is in its expanded configuration and the first branch stent-graft prosthesis in an expanded configuration;
• and
• a second branch stent-graft prosthesis including a tubular graft and at least one stent coupled to the tubular graft, wherein the second branch stent-graft prosthesis is configured to be disposed through the coupling of the distal aortic stent-graft prosthesis when the distal aortic stent-graft prosthesis is in its expanded configuration and the second branch stent-graft prosthesis is in an expanded configuration,
• wherein an overlap is formed between the proximal and distal aortic stent-graft prostheses when the proximal and distal aortic stent-graft prostheses are in their respective expanded configurations, and
• wherein a portion of the second branch stent-graft prosthesis in its expanded configuration is configured to be disposed between and contact both of an outer surface of the distal aortic stent-graft prosthesis and a vessel wall of the aortic arch, and
• wherein the distal aortic stent-graft prosthesis is configured to partially collapse relative to its expanded configuration due to the contact with the second branch stent-graft prosthesis in its expanded configuration.