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Improved prosthetic implant

An implant and artificial technology, applied in medical science, stents, prostheses, etc., can solve problems such as the impossibility of accurately predicting the diameter of tubular supports

Inactive Publication Date: 2011-03-16
CORMOVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, it is not possible to accurately predict the diameter of the tubular support in the expanded state, since the diameter depends on the elasticity of the tissue surrounding the valve, the morphological properties of the patient, etc.

Method used

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  • Improved prosthetic implant
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  • Improved prosthetic implant

Examples

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Embodiment Construction

[0036] Figure 1-8 A prosthetic valve according to a first embodiment of the implant according to the invention is shown. The valve 10 comprises a tubular support 12 of axis X and a plurality of leaflets 14 which cooperate together to form an occlusion. When the valve is implanted to replace a heart valve, the occlusion operates to allow blood to flow in one direction and prevent blood from flowing in the opposite direction. Axis X is oriented in the direction that valve 10 allows flow, from upstream to downstream.

[0037] Tubular support 12 includes a lattice frame 16 . The lattice frame 16 is formed, for example, from braided or woven threads wound around each other. exist figure 1 In the embodiment, six wires 20A-20F are coiled with each other to form a lattice frame. The wire 20 is preferably made of a metal such as stainless steel or Nitinol, or an elastomer.

[0038] A wire such as wire 20A is shaped by figure 1 A helix wound in a first positive direction about t...

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Abstract

Prosthetic implant of the type comprising: a tubular support (12) of axis X, which can be deformed between a compressed state with a small diameter and a dilated state with a larger diameter, the tubular support comprising a lattice comprising rhombus-shaped meshes (26), each mesh having a first diagonal (28) parallel to the axis X and a second diagonal (32) perpendicular to the axis X; and at least one resilient membrane (14A, 14B) arranged inside the tubular support. The membrane comprises a fixing portion (48, 52), the fixing portion being fixed to a fixing section (65, 66) delimited by a strand (20A, 20B) of the tubular support, the fixing section being oriented substantially parallel to the axis X.

Description

technical field [0001] The present invention relates to an artificial implant of this type comprising: a tubular support of axis X capable of deforming between a compressed state with a small diameter and an expanded resting state with a larger diameter, the tubular support comprising a lattice framework having a generally rhomboidal mesh, each having a first diagonal generally parallel to the axis X and a second diagonal generally perpendicular to the axis X; and at least one elastic membrane. Background technique [0002] Implants of this type are, for example, artificial valves designed to replace defective natural valves. In one variation, the implant is a tubular prosthesis (called a stent in English) designed to reinforce the walls of blood vessels or bridge over hemangiomas. [0003] In a prosthetic valve of the type described above, a portion of the lateral fixing edge of the membrane is fixed to the fixing mesh of the lattice frame at two opposite vertices along t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/24A61F2/90
CPCA61F2230/0078A61F2220/0066A61F2250/0039A61F2/2475A61F2/90A61F2220/0075
Inventor W·斯泰尔克E·彼鲁兹
Owner CORMOVE
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