Atrial shunt decompression device, weaving device and weaving method thereof
An atrial shunt regulation device, a braid tool and a braid method thereof. The left disk ( 1 ) and the right disk ( 2 ) of the atrial shunt regulation device are connected via the intermediate portion ( 3 ) as a single piece, and the left disk ( 1 ), the intermediate portion ( 3 ) and the right disk ( 2 ) are braided by a single braid wire ( 10 ). The ends of the braid wires are secured by one nut in the single-braid method, which reduces the number and size of the nuts and easily forms a cortical layer. The braid tool for braiding an atrial shunt regulation device comprises a cylinder braid body mold ( 20 ), the cylindrical braid body mold ( 20 ) includes positioning pins ( 21 ) that are evenly connected to an outer wall of the braid body mold. The braid method of the atrial shunt regulation device comprises braiding, thermoforming, braiding a binding-off wire, securing ends of wires by a nut, and thermoforming again. The braid method is easy, the process is easy, and the device can be made manually in small batches to reduce costs.
1 . An atrial shunt regulation device comprising: a left disk ( 1 ), a right disk ( 2 ), and an intermediate portion ( 3 ), wherein the left disk ( 1 ) and the right disk ( 2 ) are connected via the intermediate portion ( 3 ) as a single piece; and wherein the left disk ( 1 ), the intermediate portion ( 3 ) and the right disk ( 2 ) are braided by a single braid wire ( 10 );
wherein the braid wire ( 10 ) is interweaved to form warp segments ( 11 ) and weft segments ( 12 ), and the braid wire ( 10 ) passes through the intermediate portion ( 3 ) for a plurality of times, and wherein adjacent warp segments ( 11 ) and/or adjacent weft segments ( 12 ) converge at the intermediate portion ( 3 ), respectively;
wherein each set of 2-6 adjacent warp segments ( 11 ) and/or each set of 2-6 adjacent weft segments ( 12 ) converges at the intermediate portion ( 3 ), respectively, such that the 2-6 adjacent warp segments ( 11 ) in the respective set or the 2-6 adjacent weft segments ( 12 ) in the respective set join together at a first intersection ( 13 - 1 ) and separate at a second intersection ( 13 - 2 ).
2 . The atrial shunt regulation device according to claim 1 , wherein each set of 3 adjacent warp segments ( 11 ) and/or each set of 3 adjacent weft segments ( 12 ) converges at the intermediate portion ( 3 ), respectively.
3 . The atrial shunt regulation device according to claim 2 , wherein each set of three adjacent warp segments ( 11 ) have a central warp segment ( 11 - 1 ) and two outer warp segments ( 11 - 2 and 11 - 3 ), and wherein the two outer warp segments ( 11 - 2 and 11 - 3 ) bend toward the central warp segment to join with the central warp segment at the first intersection ( 13 - 1 ), and bend away from the central warp at the second intersection ( 13 - 2 ) to be separated from the central warp segment.
4 . The atrial shunt regulation device according to claim 1 , wherein the segments that converge in a warp and/or weft direction are spirally wrapped for fixation through an end of the braid wire ( 10 ).
5 . The atrial shunt regulation device according to claim 1 , wherein the segments that converge in the warp and/or weft direction are spirally wrapped for fixation at the intersections ( 13 - 1 and 13 - 2 ) of the braid wire ( 10 ) through an end of the braid wire ( 10 ), the end of the spirally wrapped braid wire ( 10 ) converges together with the segments that converge in the warp and/or weft direction between the intersections ( 13 - 1 and 13 - 2 ) of the braid wire ( 10 ).
6 . The atrial shunt regulation device according to claim 1 , wherein the device further comprises:
a binding-off wire for binding off and supporting bending location of the braid wire at an end of the left disk ( 1 ), wherein the binding-off wire extends obliquely to a surface of the right disk ( 2 ) and is secured to the surface of the right disk ( 2 ) by a nut ( 4 ).
7 . The atrial shunt regulation device according to claim 6 , wherein the binding-off wire is wrapped around the bending location of the braid wire ( 10 ) in an “S” shape.
8 . The atrial shunt regulation device according to claim 6 , wherein a diameter of the binding-off wire at the bending location of the braid wire ( 10 ) is larger than a diameter of an inner hole of the intermediate portion ( 3 ).
9 . The atrial shunt regulation device according to claim 6 , wherein the binding-off wire extends obliquely to the intermediate portion ( 3 ), is wrapped around transversely at the intermediate portion ( 3 ) for 1-8 turns, extends obliquely to the surface of the right disk ( 2 ) and is secured to the surface of the right disk ( 2 ) by the nut ( 4 ).
10 . The atrial shunt regulation device according to claim 9 , wherein the binding-off wire is wrapped in an “S” shape at the intermediate portion ( 3 ) between the intersections ( 13 ) that are formed from the warp segments ( 10 ) that converge to each other and the weft segments that converge to each other.
11 . The atrial shunt regulation device according to claim 9 , wherein an inner hole of the intermediate portion ( 3 ) has the same diameter at its upper end, center, and lower end.
12 . The atrial shunt regulation device according to claim 9 , wherein the nut ( 4 ) is disposed on one side of the surface of the right disk.
13 . The atrial shunt regulation device according to claim 12 , wherein the nut ( 4 ) has a nut hole extending in a direction parallel to the surface of the right disk ( 2 ).
14 . The atrial shunt regulation device according to claim 6 , wherein the binding-off wire has a structure of flat wire at the intermediate portion ( 3 ).