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Vascular expandable device

A technology for dilating devices and blood vessels, which is applied in medical science, surgery, prosthesis, etc., and can solve problems such as insufficient device porosity, unsatisfactory blockage of blood flow, and difficulty in positioning flow steering devices, etc.

Active Publication Date: 2022-01-28
TYCO HEALTHCARE GRP LP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This can make positioning the flow diversion device more difficult and can result in insufficient porosity of the device as it expands within the vessel
Additionally, current designs tend to undesirably occlude blood flow to branch or secondary vessels close to the aneurysm

Method used

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  • Vascular expandable device
  • Vascular expandable device
  • Vascular expandable device

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0260] Figure 1A is a side view of an expandable device 10 in accordance with the present technique shown positioned in an expanded state across the neck N of an aneurysm A in a vessel V (such as a cerebral vessel or artery, or a peripheral artery, coronary, pulmonary, abdominal, thoracic, or aorta). Such as Figure 1A As shown, the expandable device 10 can include a plurality of wires 18 that are braided or braided to form a generally tubular device 10 having tubular sidewalls as can be viewed when the expandable device 10 is in the expanded state. .

[0261]As used herein, an "expanded state diameter" is the diameter at which the expandable device 10 will self-expand without reaching full expansion (at which point the expandable device 10 reaches its maximum or unconstrained diameter). Thus, in At the expanded state diameter, the expandable device 10 retains some ability to further self-expand. This enables the expandable device 10 to remain in apposition and contact w...

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PUM

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Abstract

Vascular expandable devices and associated methods are disclosed herein. An expandable vascular device may include a generally tubular sidewall formed from a plurality of braided wires. The device may have a compressed state for delivery, wherein the device has a compressed state diameter of 0.027 inches or less. The device may have an expanded state, wherein the device has an expanded state diameter. The fully expanded distance of the device corresponds to the longitudinal unconstrained distance at which the distal end of the expandable device achieves the expanded state diameter. The fully expanded distance may be 20 mm or less.

Description

technical field [0001] The present technology relates generally to implantable devices for diverting blood flow in blood vessels, and in particular to inhibiting blood flow into aneurysms. Background technique [0002] An aneurysm is an abnormal bulge or bulge in a blood vessel when the wall of the blood vessel becomes weak due to disease, injury, or a birth abnormality. Aneurysms have thin, weak walls and a tendency to rupture, which can lead to stroke, death, disability, and more. One method of treating an aneurysm includes inserting a flow diverting stent or braid into a parent vessel comprising the aneurysm to be treated. Such stents or braids can be inserted into a vessel in a collapsed state, positioned next to the neck of the aneurysm, and expanded into apposition with the vessel wall. If the stent or braid has a sufficiently low porosity, the stent or braid can function to prevent blood flow through the device and into the aneurysm to induce embolization of the ane...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/12A61F2/86A61F2/966
CPCA61F2/86A61F2/966A61F2002/823A61F2250/0023A61F2250/0098A61L31/022A61L31/146A61F2/90A61B17/12172A61B17/12113A61B2017/1205A61F2/962
Inventor A·巴洛尼M·道森G·M·哈梅尔A·黄B·杰克逊
Owner TYCO HEALTHCARE GRP LP