Heart valve delivery assembly and unlocking tube

A heart valve delivery assembly, comprising an outer sheath, an outer tube apparatus, an inner tube apparatus, and a valve stent, wherein:

• the outer tube apparatus comprises an outer tube and a plurality of unlocking structures;
• each unlocking structure comprises an unlocking tube and a traction strip which are interconnected, within each unlocking structure:
• the unlocking tube comprises a spring tube and a limiting structure,
• the limiting structure comprises a first tube, a second tube, and a connecting strip, wherein the first tube and the second tube are coaxially arranged and axially spaced from each other creating an interval space therebetween, the first tube and the second tube are connected through the connecting strip,
• the spring tube is located in the interval space with one end connected to the first tube, an axis of the spring tube and an axis of the first tube are located on the same straight line, an adjustment space is formed between the other end of the spring tube and the second tube, the traction strip is connected to the other end of the spring tube, and the unlocking structure is connected to a distal end of the outer tube through the traction strip;
• and in a circumferential direction of the outer tube, the plurality of unlocking structures are arranged with equal angles;
• the inner tube apparatus comprises an inner tube and a plurality of hanging ears, the number of the hanging ears is equal to the number of the unlocking structures, and each hanging ear corresponds to a respective unlocking structure, the plurality of hanging ears are connected to a distal end of the inner tube, in a circumferential direction of the inner tube the plurality of hanging ears are arranged with equal angles, the inner tube is located inside the outer tube, and each hanging ear extends through a second tube, spring tube, and first tube of a respective unlocking structure of the outer tube apparatus;
• the valve stent comprises a stent with a valve therein, one end of the stent comprising a plurality of hanging heads, the number of the hanging heads is equal to the number of the hanging ears, and each hanging head corresponds to a respective hanging ear, and each hanging head is connected to a respective hanging ear of the inner tube apparatus;
• and
• the outer tube is sleeved with the outer sheath.