US 2024/0180561 A1Published application

High-pressure embolic material delivery device and related technology

AssigneeCovidien LP

InventorsBrad L. Jackson, Edwin Y. Wang, Maria D. Sanson, Sotheany Seang, Sydney L. Ngo, Komonn Lim, Mehdi M. Rashidi

Life of this patent

Estimating the term…

Loading patent…

Abstract

An embolic material delivery device in accordance with at least some embodiments of the present technology achieves a high pressure rating with a small wall thickness. The device includes an elongate conduit body configured to extend intravascularly toward a treatment location including an aneurysm. The conduit body defines an axial lumen through which viscous embolic material is conveyed toward the aneurysm while at least a portion of the liquid embolic material is at very high pressure (e.g., 9,000 psi or greater). The conduit body includes a metal hypotube coaxially disposed around the axial lumen. The hypotube includes cuts configured to increase a flexibility of the conduit body and bridges between the cuts. The conduit body further includes an elastomeric jacket extending around at least a portion of the hypotube. An average wall thickness of the conduit body is within a range of 0.005 to 0.007 inches.

Claims20

Dependent claims

An embolic material delivery device, comprising:

a conduit body configured to extend intravascularly toward a treatment location, wherein the conduit body is elongate, defines an axial lumen, and comprises:
a proximal end portion,
a distal end portion opposite to the proximal end portion along a length of the conduit body, wherein the axial lumen extends between the proximal and distal end portions of the conduit body,
a hypotube comprising an outer surface and an inner surface coaxially disposed around the axial lumen, wherein the hypotube defines a wall thickness between the outer surface and the inner surface, and wherein the hypotube defines a plurality of cuts extending through the wall thickness, and
a jacket extending around at least a portion of the outer surface of the hypotube and covering the plurality of cuts,
wherein the conduit body is configured to convey liquid embolic material toward the treatment location via the axial lumen while at least a portion of the liquid embolic material is at a pressure of 9,000 psi or greater, and
wherein the jacket is configured to fluidically seal the plurality of cuts such that at least a portion of the conduit body is configured to withstand the pressure of 9,000 psi or greater.

4 more elements

A method for treating an aneurysm at a neurovascular treatment location, the method comprising:

moving a distal end portion of a conduit body intravascularly toward the neurovascular treatment location, wherein the conduit body is elongate, defines an axial lumen, and comprises a hypotube coaxially disposed around the axial lumen, and wherein the hypotube comprises:
an outer surface,
an inner surface coaxially disposed around the axial lumen,
a first cut region defining a plurality of first cuts, each first cut extending from the outer surface to the inner surface, and
a second cut region defining a plurality of second cuts, each second cut extending from the outer surface to the inner surface, wherein the second cut region is circumferentially opposite to the first cut region;
bending the conduit body by at least partially collapsing the plurality of first cuts of the first cut region of the hypotube and expanding the plurality of second cuts of the second cut region of the hypotube;
and
flowing liquid embolic material distally toward the aneurysm via the axial lumen, wherein at least a portion of the liquid embolic material is at a pressure of 9,000 psi or greater within the axial lumen.

5 more elements

Dependencies are inferred from the claim text.