Balloon catheter

Patent metadata

Field	Value
Publication number	US-11850385-B2
Application number	US-202016840109-A
Country	US
Kind code	B2
Filing date	Apr 3, 2020
Priority date	Apr 3, 2020
Publication date	Dec 26, 2023
Grant date	Dec 26, 2023

Abstract

In some examples, a catheter includes one or more balloons that, when inflated, are configured to be apposition with vasculature or other hollow anatomical structure of a patient to help anchor the catheter within the vasculature, while still permitting fluid to flow past the inflated balloons. When inflated, the one or more balloons define one or more passageways configured to enable fluid to flow past the inflated balloons in a direction along a longitudinal axis of the catheter. For example, the catheter may comprise a plurality of balloons that are circumferentially and longitudinally staggered relative to each other.

First claim

What is claimed is:

1. A catheter comprising: an elongated catheter body defining a lumen and defining a central longitudinal axis, the elongated catheter body having an outer surface extending both longitudinally along the central longitudinal axis and circumferentially about the central longitudinal axis; a plurality of balloons, wherein the plurality of balloons are longitudinally and circumferentially staggered along the outer surface of the elongated catheter body in a helical arrangement, the plurality of balloons including a first balloon, a second balloon, a third balloon, a fourth balloon, and a fifth balloon, the first, second, third, fourth, and fifth balloons having different circumferential positions along the outer surface of the elongated catheter body, wherein the second balloon is directly adjacent to the first and third balloons in at least a circumferential direction, the circumferential direction being orthogonal to the central longitudinal axis and extending about the central longitudinal axis with the central longitudinal axis being an axis of rotation of the circumferential direction, wherein when the first, second, third, fourth, and fifth balloons are fully expanded, there is: a first circumferential gap between the first and second balloons; a second circumferential gap between the second and third balloons; a third circumferential gap between the third and fourth balloons; and a fourth circumferential gap between the fourth and fifth balloons, such that an entirety of the first, second, third, fourth, and fifth balloons do not overlap in the circumferential direction, the first and second circumferential gaps extending less than fully around an outer perimeter of the elongated catheter body, wherein the first balloon, the second balloon, the third balloon, the fourth balloon, and the fifth balloon in the helical arrangement define a plurality of fluid passageways, wherein the fluid passageways of the plurality of fluid passageways are circumferentially offset from each other, wherein the each of the fluid passageways of the plurality of fluid passageways allows a fluid to flow outside of the lumen of the elongated catheter body and along the outer surface of the elongated catheter body in a longitudinal direction; and a therapeutic neurovascular device within the lumen of the elongated catheter body, wherein the therapeutic neurovascular device is configured to treat a defect in the vasculature of the patient while the plurality of balloons is expanded in the vasculature such that the plurality of balloons is in apposition with a vessel wall and fluid is flowing outside of the lumen of the elongated catheter body past and along an outer surface of a balloon of the plurality of balloons, and wherein the therapeutic neurovascular device comprises an embolic retrieval device, a thrombectomy device, a stent, a stent retriever, an embolic coil, a microvascular plug, a filter, a flow diverter, an aspiration catheter, a balloon catheter, or a drug delivery catheter.

2. The catheter of claim 1 , wherein the plurality of balloons are configured to be inflated to an expanded state within vasculature of a patient to anchor the elongated catheter body within the vasculature, and wherein when the plurality of balloons are in an expanded state within the vasculature, the plurality of balloons is configured to permit blood to flow past the plurality of balloons in a direction along the central longitudinal axis.

3. The catheter of claim 1 , wherein the plurality of balloons are symmetrically arranged about the central longitudinal axis.

4. The catheter of claim 1 , wherein the plurality of balloons includes:
a first set of balloons on a first longitudinal half of the elongated catheter body; and
a second set of balloons on a second longitudinal half of the elongated catheter body, the first and second longitudinal halves being on opposite sides of the central longitudinal axis,
wherein for each of the first and second sets of balloons, each balloon of the respective set is offset from an adjacent balloon of the respective set in the longitudinal direction and the circumferential direction.

5. The catheter of claim 1 , wherein each balloon of the plurality of balloons is longitudinally spaced from directly adjacent balloons in the longitudinal direction and the circumferential direction.

6. The catheter of claim 1 , wherein each balloon of the plurality of balloons does not extend around an entire outer perimeter of the elongated catheter body.

7. The catheter of claim 1 , wherein the elongated catheter body defines a plurality of inflation lumens, and wherein at least two balloons of the plurality of balloons are fluidically coupled to separate inflation lumens of the plurality of inflation lumens.

8. The catheter of claim 1 , wherein balloons of the plurality of balloons are fluidically coupled to the lumen.

9. The catheter of claim 8 , wherein the elongated catheter body defines a plurality of lumens including the lumen, wherein at least one other lumen of the plurality of lumens is fluidically isolated from the plurality of balloons.

10. A catheter comprising: an elongated body defining a lumen; at least five balloons along an outer surface of the elongated body, wherein the at least five balloons are configured to enable fluid to flow past and along an outer surface of the at least five balloons and through a blood vessel of a patient from a proximal side of the at least five balloons to a distal side of the at least five balloons when the at least five balloons are in an inflated state within the blood vessel and engaged with the blood vessel, wherein when the at least five balloons are fully expanded there is a circumferential gap between adjacent balloons of the at least five balloons such that an entirety of each balloon of the at least five balloons does not overlap in a circumferential direction with an adjacent balloon of the at least five balloons, wherein the at least five balloons define plurality of fluid passageways configured to allow fluid to flow outside of the lumen of the elongated body and along the outer surface of the elongated body in a longitudinal direction, wherein the fluid passageways of the plurality of fluid passageways are circumferentially offset from each other; and a therapeutic neurovascular device within the lumen of the elongated body, wherein the therapeutic neurovascular device is configured to treat a defect in vasculature of the patient while the one or more balloons are in the inflated state in the blood vessel such that the one or more balloons are in apposition with a vessel wall of the blood vessel and fluid is flowing outside of the lumen of the elongated body past and along the outer surface of the one or more balloons, and wherein the therapeutic neurovascular device comprises an embolic retrieval device, a thrombectomy device, a stent, a stent retriever, an embolic coil, a microvascular plug, a filter, a flow diverter, an aspiration catheter, a balloon catheter, or a drug delivery catheter.

11. The catheter of claim 10 , wherein the one or more balloons are symmetrically distributed about a central longitudinal axis of the elongated body.

12. The catheter of claim 10 , wherein the one or more balloons are asymmetrically distributed about a central longitudinal axis of the elongated body.

13. The catheter of claim 10 , wherein the one or more balloons comprises a plurality of balloons longitudinally and circumferentially staggered along the outer surface of the elongated body.

14. The catheter of claim 10 , wherein a balloon of the one or more balloons does not extend around an entire outer perimeter

Assignees

• Covidien Lp

Inventors

• Jalgaonkar Ujwal
• Girdhar Gaurav
• Mintz Eric
• Turcios Alejandra
• Pulugurtha Syamala Rani

Classifications

• A61M25/1002 Primary

  characterised by balloon shape (A61M25/1006, A61M25/1009 take precedence) · CPC title

• A61M25/0012

  with embedded structures, e.g. coils, braids, meshes, strands or radiopaque coils · CPC title

• A61M25/104

  used for angioplasty · CPC title

• A61M25/1011 Primary

  Multiple balloon catheters · CPC title

• A61M25/1018

  Balloon inflating or inflation-control devices · CPC title