Hourglass balloon-in-balloon system
AssigneeBoston Scientific Scimed, Inc.
InventorsBrian Fahy, Jeffrey Steven Fuller, Andrew John Mitterholzer, Soo-Young Yoon
Life of this patent
Estimating the term…
Abstract
A balloon system for balloon aortic valvuloplasty includes a delivery catheter, an outer expandable member coupled to the delivery catheter, and an inner balloon disposed within the outer expandable member. The outer expandable member has a first length, and a preset hourglass shape defined by first and second bulbous portions separated by a waist region. The inner balloon is non-compliant and has a second length shorter than the first length.
Claims20
A balloon system for balloon aortic valvuloplasty, the balloon system comprising:
- a delivery catheter;
- an outer expandable member coupled to the delivery catheter, the outer expandable member having a first length, and having a preset hourglass shape defined by first and second bulbous portions separated by a waist region;
- and
- an inner balloon disposed within the outer expandable member, the inner balloon being non-compliant and having a second length shorter than the first length.
A balloon system for balloon aortic valvuloplasty, the balloon system comprising:
- a delivery catheter;
- an outer balloon coupled to the delivery catheter, the outer balloon being compliant, having a first length, and having a preset hourglass shape defined by first and second bulbous portions separated by a waist region, the first and second bulbous portions having first and second radial diameters at their widest points, respectively, and the waist region having a third radial diameter smaller than the first and second radial diameters, the first bulbous portion defining a first end of the outer balloon and the second bulbous portion defining a second end of the outer balloon, wherein the first and second ends taper from the first and second radial diameters down to the first and second ends of the outer balloon which are fixed to the delivery catheter;
- and
- an inner balloon disposed within the outer balloon, the inner balloon being non-compliant and having a second length shorter than the first length, the inner balloon being configured to expand the waist region of the outer balloon.
A method for balloon aortic valvuloplasty, the method comprising:
- inserting a distal end of a delivery catheter through a patient's aortic valve, the delivery catheter including an outer expandable member coupled adjacent the distal end of the delivery catheter, the outer expandable member having a first length and having a preset hourglass shape defined by distal and proximal bulbous portions separated by a waist region having a radial diameter smaller than radial diameters of the distal and proximal bulbous portions (when expanded), and an inner balloon disposed within the outer expandable member, the inner balloon being non-compliant and having a second length shorter than the first length;
- expanding the outer expandable member with the distal bulbous portion disposed distal of the patient's aortic valve, the proximal bulbous portion disposed proximal of the patient's aortic valve, and the waist region extending across the patient's aortic valve;
- after expanding the outer expandable member, then expanding the inner balloon to expand the waist region and open the patient's aortic valve;
- and
- collapsing the inner balloon and the outer expandable member and removing the delivery catheter from the patient.
Dependencies are inferred from the claim text.