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

Pending Publication Date: 2021-12-24
JIANGSU PNP MEDTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, CorviaMedical has designed an all-metal alloy stent for shunting from the left atrium to the right atrium for diastolic heart failure. The size of the stent is large, so the size of the matching delivery catheter is also large, which increases the difficulty of delivery
AFR, a product of Occlutech, Germany, uses a nickel-titanium wire braided structure to make it into a shape similar to an ASD occluder, and leaves a stoma for shunting; however, the braided structure of this product has a lower stoma support and is easier to endothelialize And faster long-term close, affect the shunt effect

Method used

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  • Pressure adjusting device between atria
  • Pressure adjusting device between atria
  • Pressure adjusting device between atria

Examples

Experimental program
Comparison scheme
Effect test

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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PUM

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Abstract

The invention provides a pressure adjusting device between atria,which is integrally of a hollow structure with two open ends and comprises a support and a covering film covering the support; the support is of a retractable and expandable structure and is divided into an inflow section, a middle section and an outflow section in the axial direction of the support; when the support is in an expanded state, the diameters of the inflow section and the outflow section are larger than the diameter of the middle section, and the diameters of the ends, connected with the middle section, of the inflow section and the outflow section are smaller than the diameters of the ends, away from the middle section, of the inflow section and the outflow section; and the middle section is of a radial supporting force reinforced structure.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a pressure regulating device for atrial chambers. Background technique [0002] Heart failure (heart failure) referred to as heart failure refers to the failure of the venous return blood to fully discharge the heart due to the dysfunction of the systolic function and / or diastolic function of the heart, resulting in blood stasis in the venous system and insufficient blood perfusion in the arterial system. Circulatory Disorder Syndrome. Heart failure is a serious disease with high morbidity and mortality. According to the location of heart failure, it can be divided into left heart failure, right heart failure and whole heart failure. According to the clinical manifestations of heart failure, it can also be divided into systolic heart failure. Heart failure and diastolic heart failure, among which diastolic heart failure (diastolic heart failure, DHF) accounts for about h...

Claims

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Application Information

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IPC IPC(8): A61F2/24
CPCA61F2/24
Inventor 不公告发明人
Owner JIANGSU PNP MEDTECH CO LTD
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