Systems and methods for intravascular obstruction removal
Inventors
Sudin, Yuri • Friedman, Aharon • Eckhouse, Ronen
Assignees
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Publication Number
US-11925368-B2
Publication Date
2024-03-12
Expiration Date
Abstract
Intraluminal devices and methods for removing an obstruction from a blood vessel using an intraluminal device are provided. The intraluminal device can include a flexible shaft and an expandable wire mesh structure extending from the flexible shaft, the wire mesh structure including at least one first expandable section having a first wire arrangement pattern and at least one second expandable section having a second wire arrangement pattern different from the first wire arrangement pattern. In addition, interstices in the at least one second expandable section.
Core Innovation
The invention relates to an intraluminal device for intravascular obstruction removal. The device includes a flexible shaft and an expandable wire mesh structure extending from the flexible shaft, the wire mesh structure including a first expandable section and a second expandable section formed from a plurality of pairs of continuous braided wires.
In the first expandable section, the plurality of pairs of continuous braided wires form a first braiding arrangement pattern, and in the second expandable section the plurality of pairs of continuous braided wires form a second braiding arrangement pattern. The second braiding arrangement pattern is different from the first braiding arrangement pattern, such that interstices in the first expandable section differ in size from interstices in the second expandable section.
The expandable structure is used to remove a clot or other obstruction by inserting the expandable structure, expanding it so that at least a portion of the central region is embedded within the obstruction, and withdrawing the device containing the embedded obstruction.
Claims Coverage
The partial content includes two independent claims covering an intraluminal device and a method for removing an obstruction from a vessel, with different braiding arrangement patterns producing different interstice sizes across expandable sections.
Different braiding arrangement patterns across expandable sections
An intraluminal device includes an expandable wire mesh structure extending from a flexible shaft, where the wire mesh includes a plurality of pairs of continuous braided wires forming a first braiding arrangement pattern in a first expandable section and a second braiding arrangement pattern in a second expandable section, the second braiding arrangement pattern being different from the first, and wherein interstices in the first expandable section differ in size from interstices in the second expandable section.
End-region and central-region interstice-size relationship for obstruction removal
A method of removing an obstruction from a vessel includes inserting an expandable structure that when expanded has at least one end region with interstices at least three times smaller in size than interstices in a central region; the expandable structure includes a plurality of pairs of continuous braided wires in a first braiding arrangement pattern in the at least one end region and a second braiding arrangement pattern in the central region, the first braiding arrangement pattern being different from the second; moving the expandable structure so the central region coincides with the obstruction; expanding the expandable structure to embed at least a portion of the central region within the obstruction; and withdrawing the expandable structure containing the embedded obstruction.
Across both independent claims, the key inventive concept is the use of a flexible shaft with an expandable wire mesh formed from continuous braided-wire pairs, where different braiding arrangement patterns produce different interstice sizes, and the expanded configuration is used to embed the central region within the obstruction prior to withdrawal.
Stated Advantages
Not explicitly described in patent.
Documented Applications
Not explicitly described in patent.
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