LEFT ATRIAL APPENDAGE CLOSURE AND DELIVERY SYSTEM THEREOF
A left atrial appendage (LAA) closure ( 1 ) and a system ( 6 ) for delivering the LAA closure are disclosed. The LAA closure ( 1 ) includes supporting struts ( 11 ), wherein the supporting struts ( 11 ) are distributed peripherally around a first hub ( 10 ) and extend outward, the supporting strut ( 11 ) bifurcates at a first position ( 110 ) into a left branch ( 111 ) and a right branch ( 112 ). The left branch ( 111 ) of each supporting strut ( 11 ) and the right branch ( 112 ) of an adjacent supporting strut join each other at a second position ( 113 ) and extend distally to form a distal end. The LAA closure further includes a supporting rod ( 12 ) between adjacent supporting struts ( 11 ) which ensures stability, absence of irregular deformation and lateral slippage, of the LAA closure ( 1 ). With the supporting rods ( 12 ) between the adjacent supporting struts ( 11 ), the LAA closure ( 1 ) forms a dense mesh which imparts high overall strength of the LAA closure ( 1 ).
1 . A left atrial appendage (LAA) closure delivery system used for deploying the LAA, the delivery system comprising a first delivery member and a second delivery member inside the first delivery member, wherein
the first delivery member is adapted to be engaged with or disengaged from a first hub of the LAA closure,
the second delivery member is adapted to be engaged with or disengaged from a second hub of the LAA closure.
2 . The LAA closure delivery system according to claim 1 , wherein the first hub is engaged with the second hub before the LAA closure is released from the system.
3 . The LAA closure delivery system according to claim 1 , further comprising a sheath in which the first delivery member is received.
4 . The LAA closure delivery system according to claim 1 , further comprising a stopper for fixing the first delivery member relative to the second delivery member.
5 . The LAA closure delivery system according to claim 1 , further comprising a handle provided at a proximal end of the first delivery member and/or at a proximal end of the second delivery member, being provided with a visible mark.
6 . The LAA closure delivery system according to claim 1 , wherein the LAA closure comprises a first portion and a second portion, the first portion having a first end connected to the first hub and a second end connected to a first end of the second portion, the second portion having a second end connected to the second hub.
7 . The LAA closure delivery system according to claim 6 , wherein the second portion is located inside the first portion before the LAA closure is released from the system.
8 . The LAA closure delivery system according to claim 1 , wherein the first delivery member is flared at a distal end of the first delivery member.
9 . The LAA closure delivery system according to claim 1 , wherein the second delivery member is engaged with the second hub by a threaded connection.