Deployment actuation system
View Patent ↗Contraceptive methods, systems, and devices generally improve the ease, speed, and reliability with which a contraceptive device can be deployed transcervically into an ostium of a fallopian tube. The contraceptive device may remain in a small profile configuration while a sheath is withdrawn proximally, and is thereafter expanded to a large profile configuration engaging the surrounding tissues, by manipulating one or more actuators of a proximal handle with a single hand. This leaves the other hand free to manipulate a hysteroscope, minimizing the number of health care professional required to deploy the contraceptive device.
1. An occlusion system comprising:
a sheath having a lumen; and
an occluding device disposed within the lumen and being releasable from the lumen, the occluding device comprising an expandable outer coil and an inner coil coaxially disposed within the outer coil, the inner coil including a distal end distal to a distal end of the outer coil and a proximal end within the outer coil such that a proximal end of the outer coil trails proximally the proximal end of the inner coil.
2. The occlusion system of claim 1 , wherein the outer coil is expandable from a small profile configuration within the lumen to a large profile configuration when deployed from the lumen.
3. The occlusion system of claim 2 , wherein the outer coil is self-expandable.
4. The occlusion system of claim 3 , wherein the outer coil is a helical coil.
5. The occlusion system of claim 2 , further comprising a core wire within the inner coil that remains within the inner coil after the occlusion device is deployed from the lumen.
6. The occlusion system of claim 5 , wherein the core wire tapers to a gradually increasing diameter proximally of a distal end of the core wire.
7. The occlusion system of claim 1 , further comprising a fiber extending between the inner and outer coils.
8. The occlusion system of claim 7 , wherein the fiber comprises woven strands.
9. The occlusion system of claim 8 , wherein the fiber comprises matted strands.
10. The occlusion system of claim 8 , wherein the fiber comprises a material selected from the group consisting of polyester, silk, and nylon.
11. The occlusion system of claim 1 , wherein the distal end of the outer coil is fixed to the inner coil with a bond.
12. The occlusion system of claim 11 , wherein the bond comprises solder.
13. The occlusion system of claim 11 , wherein the bond is separated from a ball tip at the distal end of the inner coil by a distance from 0.3 cm to 1.0 cm.
14. The occlusion system of claim 1 , further comprising a ball tip at the distal end of the inner coil.
15. The occlusion system of claim 14 , wherein the ball tip has a cross-section that is larger than a cross-section of the inner coil.
16. The occlusion system of claim 15 , wherein the ball tip has a diameter from 0.020 inches to 0.050 inches.
17. The occlusion system of claim 1 , further comprising a band soldered within a proximal section of the outer coil.
18. The occlusion system of claim 1 , further comprising threads at the proximal end of the inner coil.
19. The occlusion system of claim 1 , further comprising a bend at a proximal end of the outer coil to form a wind down attachment.
20. The occlusion system of claim 1 , further comprising a biodegradable plug.