JPWO2019178165A5

JPWO2019178165A5 -

Info

Publication number: JPWO2019178165A5
Application number: JP2021500017A
Authority: JP
Publication date: 2022-03-23

Claims

A device for removing substances from blood vessels
A restraint catheter with a chamber and
A containment element with a distal opening at the distal end,
The containment element also has a side wall extending proximally from the distal opening.
The containment element can be accommodated in a folded position inside the chamber of the restraint catheter.
The accommodating element is movable relative to the chamber from the folded position to an open position where the accommodating element is located outside the chamber.
The distal opening has an open position that defines the outer circumference of the distal opening so that the material to be removed can pass through the distal opening at the open position.
The containment element defines a longitudinal position at the release position.
The containment element is movable from the open position to a closed position where the size of the distal opening is reduced from the open position.
A first filament coupled to the accommodating element, wherein the accommodating element is disposed outside the chamber from a folding position where the accommodating element is accommodated inside the chamber. The first filament is also movable to the closed position, which reduces the size of the distal opening from the open position to the closed position. 1 filament and
The device .

The device of claim 1, wherein the accommodating element comprises a woven mesh.

The sidewall of the accommodating element includes an expandable portion. The device according to claim 1.

The device of claim 3 , wherein the expandable portion exerts a radial outward force on the blood vessel wall.

The first filament has a first tip portion in the folded position, the first tip portion extending from the distal end of the accommodating element in the folded position, claim. Item 1. The apparatus according to Item 1.

5. The device of claim 5, wherein the first tip portion forms a first loop that extends beyond the distal end of the containment element.

The first tip portion of the first filament moves into the accommodating element and engages with the inner surface of the accommodating element as the filament moves from the folded position to the unfolded position. The device according to claim 5.

The device according to claim 5, wherein the first tip portion applies an outward force to the inner surface at the release position.

It also has a blood clot engagement element,
The restraint catheter has a lumen that forms the chamber.
The blood clot engaging element extends through the lumen and is movable through the containment element to a working position beyond the distal opening of the containment element.
The device according to claim 1.

The device according to claim 9 , wherein the blood clot engaging element is a stent collector .

The device according to claim 9 , wherein the blood clot engaging element is a suction catheter.

The device of claim 1, wherein the first filament is movable to a closed position, the first filament is coupled to the accommodating element, and the accommodating element is moved to the closed position.

The first filament moves proximally as it moves to the closed position, and the distal opening decreases in size as the containment element moves to the closed position, claim. The device according to 1.

The device of claim 1, wherein the distal opening moves proximally as it moves to the closed position.

The first filament moves to the closed position and forms an inverted portion that moves the distal opening to a position surrounded by the side wall when viewed along the longitudinal axis. The device according to claim 1, which is connected to the housing element as described above.