IP Library › Granted Patent US 12678600
Granted Patent B2
US 12678600 · App. 18/532,090 · Granted Jul 14, 2026

Methods of preparing balloon expandable catheters for cardiac and vascular interventions

Inventors: Justin Peterson (Santa Rosa, CA); Victoria Ung (Santa Rosa, CA)
Assignee: MEDTRONIC, INC.
A61M25/10182A61M2210/125
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Quick Facts
Patent No.
US 12678600
App. No.
18/532,090
Granted
Jul 14, 2026
Kind
B2
Abstract

Methods for purging a balloon catheter of air. An inflation fluid is inserted into a balloon and an inflation lumen of a balloon catheter. The inflation lumen is in fluid communication with the balloon. The balloon catheter is positioned in an inverted orientation with a distal end thereof disposed below a proximal end thereof. The distal end of the balloon catheter includes a balloon. A vibration source is positioned in direct contact with an outer surface of the balloon catheter. The balloon catheter is vibrated via the vibration source. A vacuum is applied or pulled on the inflation lumen of the balloon catheter. The steps of vibrating the balloon catheter and applying the vacuum are performed simultaneously.

Claims (45)

1 . A method for purging a balloon catheter of air, the method comprising the steps of:

inserting an inflation fluid into a balloon and an inflation lumen of the balloon catheter, wherein the inflation lumen is in fluid communication with the balloon;

positioning the balloon catheter in an inverted orientation with a distal end thereof disposed below a proximal end thereof, wherein the distal end of the balloon catheter includes the balloon;

positioning a vibration source in direct contact with an outer surface of the balloon of the balloon catheter and/or an outer surface of an outer shaft of the balloon catheter; and

vibrating the balloon catheter with the vibration source to cause air within the balloon of the balloon catheter or air within the inflation lumen of the balloon catheter to move upwards towards the proximal end of the balloon catheter; and

maintaining the direct contact between the outer surface of the balloon catheter and the vibration source while the position of the vibration source along the outer surface of the balloon catheter is varied.

2 . The method of claim 1 , wherein the method for purging the balloon catheter of air is performed prior to an interventional procedure.

3 . The method of claim 1 , further comprising the steps of:

attaching an inflator to the proximal end of the balloon catheter; and

using the inflator to apply a vacuum on the inflation lumen of the balloon catheter while vibrating the balloon catheter with the vibration source.

4 . The method of claim 3 , wherein the inflator is a syringe having the inflation fluid therein.

5 . The method of claim 3 , further comprising the steps of:

detaching the inflator from the proximal end of the balloon catheter after the step of using the inflator to apply the vacuum on the inflation lumen of the balloon catheter; and

removing air that has accumulated in the inflator from the inflator.

6 . The method of claim 5 , further comprising the steps of:

reattaching the inflator to the proximal end of the balloon catheter after the step of removing air that from the inflator; and

repeating the step of using the inflator to apply the vacuum on the inflation lumen of the balloon catheter while vibrating the balloon catheter with the vibration source.

7 . The method of claim 3 , wherein a stopcock seals the balloon catheter during the step of using the inflator to apply the vacuum on the inflation lumen of the balloon catheter.

8 . The method of claim 1 , wherein the balloon catheter is configured as a delivery device for a replacement aortic heart valve.

9 . A method for purging a balloon catheter of air, the method comprising the steps of:

inserting an inflation fluid into a balloon and an inflation lumen of the balloon catheter, wherein the inflation lumen is in fluid communication with the balloon;

positioning the balloon catheter in an inverted orientation with a distal end thereof disposed below a proximal end thereof, wherein the distal end of the balloon catheter includes the balloon;

positioning a vibration source in direct contact with an outer surface of the balloon of the balloon catheter and/or an outer surface of an outer shaft of the balloon catheter;

applying a vacuum on the inflation lumen of the balloon catheter; and

vibrating the balloon catheter with the vibration source while applying the vacuum on the inflation lumen of the balloon catheter to cause any air within the balloon of the balloon catheter and any air within the inflation lumen of the balloon catheter to move upwards through the inflation fluid towards the proximal end of the balloon catheter; and

maintaining the direct contact between the outer surface of the balloon catheter and the vibration source while the position of the vibration source along the outer surface of the balloon catheter is varied.

10 . The method of claim 9 , wherein the method for purging the balloon catheter of air is performed prior to an interventional procedure.

11 . The method of claim 9 , wherein the steps of inserting the inflation fluid into the balloon and the inflation lumen and applying the vacuum on the inflation lumen are performed via an inflator attached to the proximal end of the balloon catheter.

12 . The method of claim 11 , wherein the inflator is a syringe.

13 . The method of claim 11 , further comprising the steps of:

detaching the inflator from the proximal end of the balloon catheter after the step of vibrating the balloon catheter with the vibration source while applying the vacuum on the inflation lumen of the balloon catheter; and

removing any air that has accumulated in the inflator from the inflator.

14 . The method of claim 13 , further comprising the steps of:

reattaching the inflator to the proximal end of the balloon catheter after the step of removing any air that has accumulated in the inflator from the inflator; and

repeating the method for purging the balloon catheter of air until all air is purged from the balloon catheter.

15 . The method of claim 9 , wherein a stopcock seals the balloon catheter during the step of applying the vacuum on the inflation lumen of the balloon catheter.

16 . The method of claim 9 , wherein the balloon catheter is configured as a delivery device for a replacement aortic heart valve.

17 . A method for purging a balloon catheter of air, the method comprising the steps of:

inserting an inflation fluid into a balloon and an inflation lumen of the balloon catheter, wherein the inflation lumen is in fluid communication with the balloon;

positioning the balloon catheter in an inverted orientation with a distal end thereof disposed below a proximal end thereof, wherein the distal end of the balloon catheter includes the balloon;

positioning a vibration source in direct contact with an outer surface of the balloon catheter of the balloon catheter and/or an outer surface of an outer shaft of the balloon catheter;

vibrating the balloon catheter with the vibration source; and

applying a vacuum on the inflation lumen of the balloon catheter;

wherein the steps of vibrating the balloon catheter and applying the vacuum are performed simultaneously and are performed prior to an interventional procedure which utilizes the balloon catheter in situ; and

maintaining the direct contact between the outer surface of the balloon catheter and the vibration source while the position of the vibration source along the outer surface of the balloon catheter is varied.