Devices and methods for inserting a sinus dilator

1. A kit comprising:

a self-expanding sinus dilator comprising a self-expanding driver comprising one or more of an osmotic agent and a swellable agent, wherein the self-expanding driver expands from a non-expanded configuration to an expanded configuration upon absorbing fluid from the surrounding environment; and

a device for inserting the self-expanding sinus dilator into a stenotic opening of a paranasal sinus of a patient, the device comprising:

a handheld member including a handle;

a hollow elongated member having a proximal end coupled to the handheld member and a distal end having an opening to an interior cavity of the hollow elongated member;

an interior elongated member extending within the interior cavity of the hollow elongated member, wherein the handheld member comprises a trigger capable of moving the interior elongated member relative to the hollow elongated member; and

a retention interface for removably coupling to the self-expanding sinus dilator, the retention interface positioned proximate to the distal end of the hollow elongated member;

wherein activation of the trigger causes the retention interface to decouple from the self-expanding sinus dilator.

2. The kit of claim 1 , wherein the retention interface is relatively displaceable with respect to the hollow elongated member.

3. The kit of claim 1 , wherein upon actuation of the trigger, the hollow elongated member remains in a relatively fixed position to the handheld member and the retention interface is displaced proximally relative to the hollow elongated member.

4. The kit of claim 3 , wherein the trigger is slidably coupled to the hand held member and coupled to the interior elongated member such that sliding the trigger displaces the retention interface proximally.

5. The kit of claim 1 , wherein the retention interface has a smaller cross-sectional width than a portion of the interior elongated member within the hollow elongated member.

6. The kit of claim 5 , wherein the retention interface and the interior elongated member are a single unitary piece of a material.

7. The kit of claim 1 , wherein the retention interface has a cross sectional width that decreases towards a distal tip of the retention interface.

8. The kit of claim 1 , comprising a light source for illuminating the dilator during insertion.

9. The kit of claim 1 , wherein the distal end of the hollow elongated member is curved.

10. The kit of claim 1 , wherein the retention interface comprises a split tip.

11. The kit of claim 1 , comprising a lumen extending within the interior elongated member and having an opening at a distal tip of the interior elongated member.

12. The kit of claim 11 , wherein the lumen is coupled to a fluid source comprising a fluid including at least one drug selected from the group consisting an analgesic, an anesthetic, an anti-inflammatory, an antibiotic, a steroid, and a drug that limits bleeding.

13. The kit of claim 11 , wherein the lumen is coupled to a source of suction.

14. The kit of claim 1 , wherein the self-expanding sinus dilator is removably coupled to the retention interface.

15. The kit of claim 1 , comprising a fluid source adapted to couple to the device and provide fluid to be dispensed out of the device into a sinus or nasal cavity of the subject.

16. The kit of claim 1 , comprising one or more retention interfaces configured to be removably coupled to the interior elongated member of the device.

17. The kit of claim 1 , wherein the self-expanding sinus dilator is coupled to the device.

18. The kit of claim 1 , comprising one or more sinus ostium sizing probes, the probes being adapted to be removably mounted on the distal end of the hollow elongated member of the device.

19. The kit of claim 1 , wherein the osmotic agent comprises a salt, a sugar, an osmopolymer, or combinations thereof.

20. The kit of claim 19 , wherein the osmotic agent comprises sodium chloride, lactose, polyethylene oxide, sodium carboxymethyl cellulose, or combinations thereof.

21. The kit of claim 1 , wherein the one or more of the osmotic agent and the swellable agent comprises polyethylene oxide or sodium carboxymethyl cellulose.

22. The kit of claim 1 , wherein the one or more of the osmotic agent and the swellable agent comprises sodium chloride and polyethylene oxide.

23. A method of using the kit of claim 1 to dilate a stenotic opening of a paranasal sinus in a subject, the method comprising:

coupling the self-expanding sinus dilator to the retention interface of the device;

inserting the self-expanding sinus dilator and distal end of the hollow elongated member of the device into a nasal cavity of the subject;

positioning the self-expanding sinus dilator into the stenotic opening;

decoupling the retention interface from the self-expanding sinus dilator; and

removing the hollow elongated member of the device from the nasal cavity of the subject.

24. The method of claim 23 , wherein decoupling the retention interface comprises relatively displacing the interior elongated member with respect to the hollow elongated member, wherein the self-expanding sinus dilator is decoupled from the retention interface during the relative displacement and maintained in the stenotic opening.

25. The method of claim 24 , wherein the relative displacing of the interior elongated member with respect to the hollow elongated member comprises proximally displacing the retention interface relative to the hollow elongated member while the hollow elongated member remains in a relatively fixed position to the handheld member.

26. The method of claim 23 , comprising dispensing fluid to the nasal or sinus cavity via a lumen positioned within the hollow elongated member, wherein the fluid comprises at least one drug selected from the group consisting of an analgesic, an anesthetic, an anti-inflammatory, an antibiotic, a steroid, and a drug that limits bleeding.

27. The method of claim 23 , comprising suctioning fluid or debris from the nasal cavity or sinus cavity via a lumen positioned within the hollow elongated member.

28. The method of claim 23 , comprising visualizing the stenotic opening via a camera positioned near the distal end of the hollow elongated member.

29. The method of claim 23 , comprising illuminating the self-expanding sinus dilator during the positioning thereof into the stenotic opening.