Method for treating outflow tracts

Patent metadata

Field	Value
Publication number	US-9339637-B2
Application number	US-201414524889-A
Country	US
Kind code	B2
Filing date	Oct 27, 2014
Priority date	Jun 5, 2009
Publication date	May 17, 2016
Grant date	May 17, 2016

Abstract

A balloon dilation catheter includes a substantially rigid inner guide member and a movable shaft coupled to a balloon that is slidably mounted on the substantially rigid inner guide member. To treat a sinus cavity of a subject using the balloon dilation the substantially rigid inner guide member is advanced into a drainage pathway of the sinus (e.g., frontal recess) of the subject via a nasal passageway. The shaft and balloon are advanced in a distal direction over the substantially rigid inner guide member to place the balloon in the drainage pathway. The balloon is inflated to expand or otherwise remodel the drainage pathway.

First claim

What is claimed is:

1. A method of treating an outflow tract that opens into a nasal passage of a subject using a balloon dilation catheter, the method comprising:
providing a balloon dilation catheter that includes
a handle defining a slot extending along a longitudinal exterior surface of the handle,
a substantially rigid inner guide member extending longitudinally from the handle,
a movable shaft coupled to a balloon and slidably mounted on the substantially rigid inner guide member, and
a balloon advancement member slidably disposed within the slot and configured to advance the shaft and the balloon in a distal direction over the substantially rigid inner guide member;

advancing the substantially rigid inner guide member into the outflow tract of the subject via the nasal passageway;
advancing the balloon advancement member in the distal direction while keeping the handle static relative to the outflow tract, wherein advancing the balloon advancement member places the balloon at a desired location in the outflow tract; and
inflating the balloon.

2. The method of claim 1 , wherein the shape of the substantially rigid inner guide member is adjusted prior to advancement to the desired location.

3. The method of claim 2 , wherein the shape is adjusted by replacing a substantially rigid inner guide member having a first shape with a substantially rigid inner guide member having a second shape.

4. The method of claim 2 , wherein the shape is adjusted by manually bending the substantially rigid inner guide member.

5. The method of claim 1 , wherein the substantially rigid inner guide member includes a lumen, the lumen being coupled to an aspiration source configured to aspirate the outflow tract.

6. The method of claim 1 , wherein, prior to inflation of the balloon, the substantially rigid inner guide member includes a lumen and a guide wire is inserted into the lumen and advanced until a distal portion extends from a distal end of the substantially rigid inner guide member.

7. The method of claim 6 , further comprising re-positioning the substantially rigid inner guide member based at least in part on the location of the distal portion of the guide wire.

8. The method of claim 1 , wherein the handle comprises a distal stop configured to prevent continued distal advancement of the balloon.

9. The method of claim 1 , wherein the handle comprises an inflation port that is attached to a proximal end of the handle.

10. The method of claim 9 , wherein the balloon advancement member is advanced from a first proximal position to a second distal position and wherein the first proximal position and the second distal position are both distal with respect to the inflation port.

11. The method of claim 1 , wherein the balloon is inflated to a pressure within the range of about 3 atmospheres to about 12 atmospheres.

12. The method of claim 1 , wherein the balloon is inflated, deflated, and inflated a plurality of times.

13. The method of claim 1 , wherein the outflow tract is an outflow tract of a sinus cavity.

14. The method of claim 13 , wherein the sinus cavity is a sphenoid sinus cavity.

15. The method of claim 13 , wherein the sinus cavity is a maxillary sinus cavity.

16. The method of claim 13 , wherein the sinus cavity is a frontal sinus cavity.

17. The method of claim 1 , further comprising tracking the movement of the substantially rigid inner guide member into the outflow tract using an image guided surgery system.

18. The method of claim 17 , wherein the image guided surgery system comprises a CT guidance system.

Assignees

• Entellus Medical Inc

Inventors

• Drontle John R
• Hanson Anthony J

Classifications

• A61M25/10

  Balloon catheters ({A61M25/0125 takes precedence; embolectomy A61B17/22032; retractors A61B17/02;} inflatable balloons for placing stents or stent-grafts A61F2/958 {; stomach balloons for treatment of obesity A61F5/0003; oesophagal tubes A61J15/00}) · CPC title

• A61B34/30

  Surgical robots · CPC title

• A61B17/24

  for use in the oral cavity, larynx, bronchial passages or nose (for medical inspection of cavities or tubes in the body A61B1/00); Tongue scrapers · CPC title

• A61B2017/246

  for cleaning of the nose · CPC title

• A61M25/0113

  Mechanical advancing means, e.g. catheter dispensers · CPC title