Self-expanding devices and methods therefor
Described here are delivery devices for delivering one or more implants to the body, and methods of using. The delivery devices may deliver implants to a variety of locations within the body, for a number of different uses. In some variations, the delivery devices have a cannula with one or more curved sections. In some variations, a pusher may be used to release one or more implants from the cannula. In some variations, one or more of the released implants may be a self-expanding device. Methods of delivering implants to one or more sinus cavities are also described here.
1. A method of treating one or more sinus conditions in a patient, the method comprising:
delivering an expandable device to one or more sinus cavities, wherein delivering the expandable device to one or more sinus cavities comprises delivering the expandable device adjacent to one of an ethmoid sinus cavity, a maxillary sinus cavity, a frontal sinus cavity, and a sphenoid sinus cavity,
wherein the expandable device is configured to expand from a first compressed configuration to a second expanded configuration for conformation against sinus tissue, and
wherein the expandable device comprises one or more biodegradable polymer filaments arranged to form a series of diamond shapes, wherein a distal end of the expandable device and a proximal end of the expandable device are defined by each of the diamond shapes.
2. The method of claim 1 , wherein the expandable device is self-expanding.
3. The method of claim 1 , wherein the expandable device has a compressed diameter in the first compressed configuration and an expanded diameter in the second expanded configuration.
4. The method of claim 3 , wherein a ratio of the expanded diameter to the compressed diameter is about 2:1 to about 20:1.
5. The method of claim 1 , wherein each of the diamond shapes comprises a peak and a valley, wherein the distal end of the expandable device is defined by the peaks of each of the diamond shapes and the proximal end of the expandable device is defined by the valleys of each of the diamond shapes.
6. The method of claim 5 , wherein at least one of the one or more biodegradable polymer filaments is wound to form a loop on at least one of the distal end of the expandable device and the proximal end of the expandable device.
7. The method of claim 1 , wherein the expandable device is at least partially coated with a drug eluting layer comprising a drug.
8. The method of claim 7 , wherein the drug eluting layer comprises a release rate modifier.
9. The method of claim 8 , wherein the release rate modifier is polyethylene glycol.
10. The method of claim 7 , wherein the drug is an anti-inflammatory agent.
11. The method of claim 7 , wherein the drug eluting layer is configured to release the drug at a daily dosage of about 500 μg or less per day.
12. The method of claim 7 , wherein the drug eluting layer is configured to release the drug over a period of time between about 5 days to about 120 days.
13. The method of claim 10 , wherein the drug is mometasone furoate.
14. The method of claim 1 , wherein delivering the expandable device comprises advancing the expandable device in the first compressed configuration in a delivery device, and actuating a plunger in the delivery device.
15. The method of claim 1 , wherein the one or more biodegradable polymer filaments comprises polyurethane.
16. The method of claim 1 , wherein the one or more biodegradable polymer filaments comprises poly(lactide-co-caprolactone).
17. The method of claim 1 , wherein the one or more biodegradable polymer filaments comprises poly(lactide-co-glycolide).
18. A method of treating one or more sinus conditions in a patient, the method comprising:
delivering an expandable device to a sinus region, wherein delivering the expandable device comprises delivering the expandable device adjacent to one of an ethmoid sinus cavity, a maxillary sinus cavity, a frontal sinus cavity, and a sphenoid sinus cavity,
wherein the expandable device is configured to expand from a first compressed configuration to a second expanded configuration for conformation against sinus tissue, and
wherein the expandable device comprises at least one biodegradable polymer filament and wherein the expandable device is configured to release mometasone furoate at a daily dosage of about 500 μg or less per day.
19. The method of claim 18 , wherein the expandable device is configured to release the mometasone furoate over a period of time between about 5 days to about 120 days.
20. The method of claim 19 , wherein the expandable device is configured to release the mometasone furoate at a constant rate.
21. The method of claim 18 , wherein the expandable device comprises a tube.
22. The method of claim 18 , wherein the expandable device comprises at least two biodegradable polymer filaments.
23. The method of claim 18 , wherein the at least one biodegradable polymer filament comprises poly(lactide-co-glycolide).
24. The method of claim 23 , wherein the molar percent of lactide in the at least one biodegradable polymer filament is between about 0% and about 50%.
25. The method of claim 24 , wherein the molar ratio of lactide to glycolide is about 10:90.
26. The method of claim 18 , wherein the at least one biodegradable polymer filament comprises poly(lactide-co-caprolactone).
27. The method of claim 18 , wherein the expandable device has a compressed diameter in the first compressed configuration, and an expanded diameter in the second expanded configuration, and wherein a ratio of the expanded diameter to the compressed diameter is about 2:1 to about 20:1.
28. A method of treating one or more sinus conditions in a patient, the method comprising:
delivering an expandable device to a sinus region, wherein the expandable device is configured to expand from a first compressed configuration to a second expanded configuration for conformation against sinus tissue,
wherein the expandable device comprises at least one biodegradable polymer filament comprising poly(lactide-co-glycolide) and the molar percent of lactide in the at least one biodegradable polymer filament is between about 0% and about 50%, and
wherein the expandable device is configured to release mometasone furoate at a daily dosage of about 500 μg or less per day.
29. The method of claim 28 , wherein the expandable device is configured to release mometasone furoate over a period of time between about 5 days to about 120 days.
30. The method of claim 29 , wherein the expandable device is configured to release the mometasone furoate at a constant rate.
31. The method of claim 28 , wherein the expandable device comprises a tube.
32. The method of claim 28 , wherein the expandable device comprises at least two biodegradable polymer filaments.
33. The method of claim 28 , wherein the at least one biodegradable polymer filament comprises poly(DL-lactide-co-glycolide).
34. The method of claim 28 , wherein the molar ratio of lactide to glycolide is about 10:90.
35. The method of claim 28 , wherein the expandable device has a compressed diameter in the first compressed configuration, and an expanded diameter in the second expanded configuration, and wherein a ratio of the expanded diameter to the compressed diameter is about 2:1 to about 20:1.
36. The method of claim 28 , wherein delivering the expandable device comprises delivering the expandable device adjacent to one of an ethmoid sinus cavity, a maxillary sinus cavity, a frontal sinus cavity, and a sphenoid sinus cavity.
37. The method of claim 28 , wherein delivering the expandable device comprises delivering the expandable device to the osteomeatal complex.