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Flow limiting apparatus in blood vessel

A flow restrictor, tubular technology, applied in the direction of blood vessels, dilators, devices with tubular structures of the human body, etc., can solve the problems of not being able to protect the lungs, not being able to eliminate lung congestion, etc.

Inactive Publication Date: 2003-09-17
AGA MEDICAL CORP MS US
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the bundle is too loose, it will not decongest the lungs, so it will not protect the lungs from damage and pulmonary vascular disease

Method used

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  • Flow limiting apparatus in blood vessel
  • Flow limiting apparatus in blood vessel
  • Flow limiting apparatus in blood vessel

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Experimental program
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Embodiment Construction

[0019] The present invention provides a guide through a percutaneous catheter for the treatment of patients with abnormal vasculature structures, such as shunts between the left and right sides of the heart, translocated great arteries (TGA), post-Fontan transhepatic (liver Portosystemic shunt and protein-losing enteropathy.

[0020] see figure 1 , which, when the device is in its unconstrained natural state, comprises a disk-shaped device 10 having opposite ends 12 and 14 of a predetermined expanded diameter and a hollow central portion 16 between said ends. The metal fabric forming the device 10 comprises multiple strands that are woven into a tubular structure and then heat set in a mold in the manner described in Curtis Amplatz, US Pat. No. 6,123,715, the disclosure of which is incorporated herein. for reference.

[0021] As described in US Patent No. 6,123,715, the strands making up the metal fabric are preferably made of a resilient metal or metal alloy, and the braid ...

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PUM

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Abstract

An intravascular flow restrictor comprises a braided tubular structure designed to be placed in the main pulmonary artery for limiting blood pressure in the lungs. The braided structure is designed to be collapsed for placement in a delivery catheter but when ejected from the delivery catheter, assumes a substantially larger diameter disk shaped device having one or more longitudinal channels or passways therethrough.

Description

(1) Technical field [0001] The present invention relates generally to intravascular devices for use in the treatment of certain medical conditions and, more particularly, to an intravascular restrictor for reducing blood pressure downstream of where the restrictor is installed. (2) Background technology [0002] In a normal heart, the right side of the heart pumps blood to the lungs, which is a relatively easy task, while the left side of the heart pumps blood throughout the body, which is a more difficult job. Therefore, the blood pressure in the left ventricle (pump chamber) is generally about 5 times the blood pressure in the right ventricle, and the walls of the left ventricle are thicker than those of the right ventricle. One of many heart defects is the excessive flow of blood into the lungs. Many defects involve holes in the septum that allow blood to flow from the high-pressure left side to the low-pressure right side. This increases blood pressure in the right ven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/00A61B17/12A61F2/06A61F2/90
CPCA61B17/12022A61B17/12036A61B17/12109A61B17/12122A61B17/12172A61B2017/00243A61B2017/00557A61B2017/1205A61F2/90A61F2002/068A61M29/00A61M29/02
Inventor K·安普拉茨
Owner AGA MEDICAL CORP MS US