Modular handle comprising a trigger wire actuation mechanism for a prosthesis delivery device

A prosthesis delivery device comprising:

• a handle assembly, the handle assembly comprising:
• a main handle having an outer surface;
• a rotatable handle disposed distally of the main handle;
• a retractable sheath operatively coupled to the rotatable handle;
• at least one rotatable ring, the at least one rotatable ring coupled to a distal end of at least one trigger wire, the at least one trigger wire having a proximal end releasably engaged with a prosthesis;
• a prosthesis retention region;
• wherein the prosthesis is releasably coupled to the prosthesis retention region;
• wherein the at least one rotatable ring comprises a rotatable inner surface onto which the at least one trigger wire is configured to be wound;
• wherein the main handle is fixed relative to the rotatable handle;
• wherein the rotatable handle is fixed longitudinally relative to the main handle;
• wherein rotation of the rotatable handle retracts the sheath in a distal direction;
• and
• wherein rotation of the at least one rotatable ring winds at least a portion of the trigger wire around the main handle in a space between the outer surface and the rotatable inner surface and withdraws the at least one trigger wire in the distal direction.

A handle assembly for a prosthesis delivery device comprising:

• a main handle having an outer surface;
• a rotatable handle having a proximal end and a distal end;
• a retractable sheath operatively coupled to the rotatable handle;
• a first rotatable ring having a first rotatable inner surface, the at least one rotatable ring operatively coupled to a distal end of a first trigger wire having a proximal end configured to releasably engage a prosthesis;
• a second rotatable ring disposed distally of the first rotatable ring and having a second rotatable inner surface, the second rotatable ring operatively coupled to a distal end of a second trigger wire having a proximal end configured to releasably engage the prosthesis;
• wherein the main handle is fixed relative to the rotatable handle;
• wherein rotation of the rotatable handle retracts the sheath in a distal direction;
• wherein rotation of the first rotatable ring winds at least a portion of the first trigger wire around the main handle in a space between the outer surface and the first rotatable inner surface of the first rotatable ring and withdraws the first trigger wire in the distal direction;
• and
• wherein rotation of the second rotatable ring winds at least a portion of the second trigger wire around the main handle in a space between the outer surface and the second rotatable inner surface of the second rotatable ring and withdraws the second trigger wire in the distal direction.