Pressure adjusting device between atria
A pressure regulation and room technology, applied in the field of medical devices, can solve the problems of increasing the difficulty of delivery, large effective orifice area, low stoma support force, etc., and achieves the effect of less human trauma, small size, and small overall size
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Embodiment 1
[0035] refer to Figure 1-5 , the present invention provides a pressure regulating device in the atrium, the whole is a hollow structure with openings at both ends, including a stent and a membrane covering the stent; the stent is a contractible and expandable structure, which is divided into an inflow section 1. The middle section 2 and the outflow section 3; wherein, when the stent is expanded, the diameters of the inflow section 1 and the outflow section 2 are larger than the diameter of the middle section 2, and the diameter of the end connecting the inflow section 1 and the outflow section 3 to the middle section 2 is less than The diameter of the end away from the middle section 2; the middle section 2 adopts a structure with enhanced radial support force.
[0036] When in use, the pressure regulating device in the atrium is compressed and folded in the delivery device, and then delivered to the target position through the delivery device, so that the inflow segment 1 is...
Embodiment 2
[0054] refer to Figure 6-7 , this embodiment is an adjustment made on the basis of embodiment 1.
[0055] Specifically, in this embodiment, the middle section includes a plurality of S-shaped reinforcing ribs 201 arranged in the circumferential direction; the shape and size of the S-shaped reinforcing ribs 201 can be adjusted to ensure that they are close to each other to form an approximate circular inner wall, and the middle section of the bracket can be improved. At the same time, it ensures that the stent will not produce non-uniform deformation under external pressure, maintains the effective passing area of the stent, and improves the smoothness of blood flow.
[0056] In this example, refer to Figure 6-7 , the structure of the inflow section 1 and the outflow section 3 of the bracket is the same; the specific inflow section 1 includes a plurality of circumferentially uniform first support rods 103, and the first support rods 103 are arranged parallel to the axial d...
Embodiment 3
[0062] refer to Figure 8-9 , this embodiment is an adjustment made on the basis of embodiment 1.
[0063] In this embodiment, the bracket includes a plurality of second support rods 6 uniformly distributed in the circumferential direction, and the second support rods 6 are arranged obliquely with respect to the uniform axial side; between adjacent second support rods there is at least one second The wave-shaped connecting piece 7 forms a helical cylindrical structure, and the inclination direction of the second support rod 6 can be adjusted to be designed as a forward or reverse helix as required.
[0064] Wherein, preferably, the inclination angle of the second support rod relative to the axial direction is 20°-45°.
[0065] Wherein, preferably, both ends of the second support rod 6 are connected with a second wave-shaped connecting piece 7 .
[0066] Further, such as Figure 10 As shown in , adjacent second support rods 6 are connected with reinforcing ribs 8 at the midd...
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