Reinforced Balloon Catheter

• US 20170348514A1
• Filed: 05/25/2017
• Published: 12/07/2017
• Est. Priority Date: 06/01/2016
• Status: Active Grant

• Current Assignee: Microvention Incorporated (Terumo Corporation)
• Original Assignee: Microvention Incorporated (Terumo Corporation)
• Inventors: Guyon, Roland, Peralta, Nelson, Purtzer, Raleigh
• Granted Patent: US 10,786,659 B2
• Time in Patent Office: Days
• CPC Class Codes: A61M 2025/0018 having a plug, e.g. an inflatable plug for closing catheter lumens
• CPC Class Codes: A61M 2025/1077 having a system for expelling the air out of the balloon before inflation and use
• CPC Class Codes: A61M 2025/1079 having radio-opaque markers in the region of the balloon
• CPC Class Codes: A61M 25/0045 multi-layered, e.g. coated coating materials A61L29/08
• CPC Class Codes: A61M 25/0052 Localized reinforcement, e.g. where only a specific part of the catheter is reinforced, for rapid exchange guidewire port
• CPC Class Codes: A61M 25/0108 using radio-opaque or ultrasound markers
• CPC Class Codes: A61M 25/1006 Balloons formed between concentric tubes
• CPC Class Codes: A61M 25/10182 Injector syringes
• CPC Class Codes: A61M 25/10187 Indicators for the level of inflation or deflation
• CPC Class Codes: A61M 25/1034 Joining of shaft and balloon

Abstract

A balloon catheter is described having a reinforced, co-axial, duel lumen design. In some embodiments, the balloon catheter includes a purging mechanism designed to purge air from the balloon.

Claims

1. A balloon catheter used in endovascular procedures comprising:

a balloon in fluid communication with an inflation lumen, whereby the balloon is inflated as an inflation liquid is delivered through the inflation lumen;

a purge port in fluid communication with the balloon, the purge port comprising a membrane having pores sized to allow passage of gas while restricting passage of the inflation liquid in order to purge gas from the balloon while retaining the inflation liquid within the balloon so that the balloon maintains an inflated shape after the balloon is inflated.

2. The balloon catheter of claim 1 further comprising an outer tubular assembly comprising the inflation lumen and an inner tubular assembly comprising the purge port.

3. The balloon catheter of claim 2 wherein the inner tubular assembly comprises a guidewire port.

4. The balloon catheter of claim 2 wherein the inner tubular assembly is coaxially inserted within a lumen of the outer tubular assembly.

5. The balloon catheter of claim 2 wherein the outer tubular assembly is attached to a proximal portion of the balloon and the inner tubular assembly is attached to a distal portion of the balloon.

6. The balloon catheter of claim 1 wherein the membrane is adjacent to the balloon.

7. The balloon catheter of claim 1 wherein the balloon is deflated when suction is applied through the inflation lumen.

8. A balloon catheter used in endovascular procedures comprising:

a balloon;

an outer tubular assembly, a proximal part of the balloon affixed to the outer tubular assembly, the outer tubular assembly including an inflation lumen through which an inflation fluid is delivered to the balloon; and

an inner tubular assembly, a distal part of the balloon affixed to the inner tubular assembly, the inner tubular assembly including;

a membrane in fluid communication with the balloon, where the membrane allows passage of gas but restricts passage of liquid in order to purge gas from the balloon while retaining the inflation liquid within the balloon in order for the balloon to maintain an inflated shape after the balloon is inflated; and

a channel in fluid communication with the membrane through which gas expelled from the balloon passes out from the balloon catheter.

9. The balloon catheter of claim 8 wherein the membrane comprises pores sized to accommodate gas passage but not liquid passage.

10. The balloon catheter of claim 8 wherein the inner tubular assembly comprises a guidewire port.

11. The balloon catheter of claim 8 wherein the inner tubular assembly is coaxially inserted within a lumen of the outer tubular assembly.

12. The balloon catheter of claim 8 wherein the purge port allows passage of gas out from a distal end of the balloon catheter.

13. The balloon catheter of claim 8 wherein the balloon is deflated when suction is applied through the inflation lumen.

14. A balloon catheter system comprising:

a syringe comprising;

an inflation liquid;

a syringe plunger;

a metered controller that actuates the syringe plunger to expel a metered dose of the inflation liquid from the syringe; and

a catheter comprising;

an inflation lumen that conveys the inflation liquid expelled from the syringe;

a balloon in fluid communication with the inflation lumen that inflates as the inflation liquid is delivered through the inflation lumen and deflates as the inflation liquid is withdrawn through the inflation lumen; and

a purge port comprising a membrane that selectively allows passage of gas and restricts passage of the inflation liquid in order to purge gas from the balloon while retaining the inflation liquid within the balloon and to maintain an inflated shape of the balloon after the balloon is inflated.

15. The balloon catheter system of claim 14 wherein the membrane is adjacent the balloon.

16. The balloon catheter system of claim 14 wherein the membrane comprises pores sized to accommodate gas passage but not liquid passage.

17. The balloon catheter system of claim 14 wherein the metered controller comprises a signal corresponding to the metered dose of the inflation liquid.

18. The balloon catheter system of claim 14 wherein a portion of the metered controller rotates to deliver the metered dose of the inflation liquid from the syringe.

19. The balloon catheter system of claim 14 wherein the metered controller is connected to a syringe flange at a first end and the syringe plunger at a second end.

20. The balloon catheter system of claim 14 wherein the metered controller comprises a protruding element and a groove that mate when the metered dose of inflation liquid has been dispensed.