Catheter with flaring tip

Patent metadata

Field	Value
Publication number	US-2024325692-A1
Application number	US-202418740635-A
Country	US
Kind code	A1
Filing date	Jun 12, 2024
Priority date	May 18, 2018
Publication date	Oct 3, 2024
Grant date	—

Abstract

In the present disclosure, embodiments of flaring tip microcatheters, methods of deploying flaring tip microcatheters, and embolization treatment methods are disclosed. The flaring tip microcatheter may include a hollow shaft having a shaft lumen defined therein, a core disposed within the shaft lumen, and a tip comprising at least two petals affixed to a distal end of the core, the at least two petals comprising at least two wires wherein the core is hollow and defines a core lumen. The at least two wires may be configured to pull the at least two petals to form a flared configuration of the tip. The flared configuration of the tip may allow for laminar flow of a therapeutic agent distally from the tip.

First claim

What is claimed is:

1 .- 11 . (canceled)

12 . A method of deploying a flaring tip microcatheter, the method comprising:
advancing a flaring tip microcatheter having a proximal end and a distal end through a vessel, the flaring tip microcatheter comprising
a hollow shaft having a shaft lumen defined therein;
a core disposed within the shaft lumen, wherein the core is hollow and defines a core lumen; and
a tip comprising at least two petals affixed to a distal end of the core, wherein the at least two petals comprise at least two wires;
pulling the at least two wires to flare the at least two petals and form a flared configuration of the tip,
wherein the flared configuration of the tip allows for laminar flow of a therapeutic agent distally from the tip.

13 . The method of claim 12 , wherein the flaring tip microcatheter further comprises a slide affixed to the at least two wires, and wherein the slide is configured to pull the at least two wires.

14 . The method of claim 13 , wherein pulling the at least two wires further include pulling the slide affixed to the at least two wires.

15 . The method of any of claims 12-14 , further comprising advancing a guidewire through the core lumen, and guiding the guidewire through a vessel within a body.

16 . The method of claim 15 , wherein the therapeutic agent comprises radiotherapeutic agent, chemotherapeutic agent, or combinations thereof.

17 . The method of claim 16 , wherein the therapeutic agent comprises radiotherapeutic microspheres, chemotherapeutic microspheres, or combinations thereof.

18 . An embolization treatment method, the method comprising:
advancing a flaring tip microcatheter having a proximal end and a distal end through a vessel within the body of patient, the flaring tip microcatheter comprising:
a hollow shaft having a shaft lumen defined therein;
a core disposed within the shaft lumen, wherein the core is hollow and defines a core lumen; and
a tip comprising at least two petals affixed to a distal end of the core, wherein the at least two petals comprise at least two wires;
pulling the at least two wires to flare the at least two petals and form a flared configuration of the tip, whereby the flared configuration of the tip allows for laminar flow of a therapeutic agent distally from the tip; and delivering a therapeutic agent to the vessel within the body of the patient comprising expelling the therapeutic agent from the distal end of the flaring tip microcatheter through the core lumen.

19 . The method of claim 18 , wherein the therapeutic agent comprises radiotherapeutic agent, chemotherapeutic agent, or combinations thereof.

20 . The method of any of claims 18-19 , wherein the therapeutic agent comprises radiotherapeutic microspheres, chemotherapeutic microspheres, or combinations thereof.

21 . The method of any of claims 18-20 , further comprising pulling a slide affixed to the at least two wires, wherein the slide is configured to pull the at least two wires.

Assignees

• Bard Peripheral Vascular Inc

Inventors

• Simmons Brandon David

Classifications

• A61M2205/33

  Controlling, regulating or measuring · CPC title

• A61M2205/073

  Syringe, piston type · CPC title

• A61M2205/051

  with radiation therapy · CPC title

• A61M5/31511

  Piston or piston-rod constructions, e.g. connection of piston with piston-rod (A61M5/5066 takes precedence) · CPC title

• A61M5/315

  Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod {or piston}; Appliances on the rod for facilitating dosing {; Dosing mechanisms} · CPC title