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 The contraceptive device may remain in a small profile configuration while a sheath is withdrawn proximally, and is thereafter expanded to a large profile configuration engaging the surrounding tissues, by manipulating one or more actuators of a proximal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. A catheter system comprising:
an outer sheath housing a first coil;
a hydrophilic coating on an outer surface of the outer sheath;
a guiding structure disposed within the outer sheath, the guiding structure comprising a proximal portion and a distal portion, the distal portion including a second coil and a core shaft coaxially disposed within the second coil;
wherein the outer sheath and the guiding structure are configured to be advanced together within a body lumen such that the distal portion of the guiding structure extends distally from the outer sheath during advancement.
2. The catheter system of claim 1 , wherein the outer sheath and the guiding structure are configured to be releasably locked together such that the distal portion of the guiding structure extends a fixed distance distally from the outer sheath during advancement.
3. The catheter system of claim 1 , wherein the core shaft is tapered.
4. The catheter system of claim 1 , wherein the first coil is metallic.
5. The catheter system of claim 1 , further comprising an atraumatic tip at a distal end of the guiding structure.
6. The catheter system of claim 1 , wherein the core shaft comprises a metallic structure.
7. The catheter system of claim 1 , wherein the first coil is constrained between an outer layer and an inner layer.
8. The catheter system of claim 7 , wherein the inner layer comprises PTFE.
9. The catheter system of claim 1 , wherein a distal portion of the outer sheath includes a first segment and a second segment distal to the first segment, wherein the second segment is more flexible than the first segment.
10. The catheter system of claim 1 , further comprising a radiopaque visualization marker.
11. A catheter system comprising:
an outer sheath housing a first coil, wherein a distal portion of the outer sheath includes a first segment and a second segment distal to the first segment, wherein the second segment is more flexible than the first segment;
a guiding structure disposed within the outer sheath, the guiding structure comprising a proximal portion and a distal portion, the distal portion including a second coil and a core shaft coaxially disposed within the second coil;
wherein the outer sheath and the guiding structure are configured to be advanced together within a body lumen such that the distal portion of the guiding structure extends distally from the outer sheath during advancement.
12. The catheter system of claim 11 , wherein the outer sheath and the guiding structure are configured to be releasably locked together such that the distal portion of the guiding structure extends a fixed distance distally from the outer sheath during advancement.
13. The catheter system of claim 11 , wherein the core shaft is tapered.
14. The catheter system of claim 11 , wherein the first coil is metallic.
15. The catheter system of claim 11 , further comprising an atraumatic tip at a distal end of the guiding structure.
16. The catheter system of claim 11 , wherein the core shaft comprises a metallic structure.
17. The catheter system of claim 11 , wherein the first coil is constrained between an outer layer and an inner layer.
18. The catheter system of claim 17 , wherein the inner layer comprises PTFE.
19. The catheter system of claim 11 , further comprising a radiopaque visualization marker.
20. A catheter system comprising:
an outer sheath comprising an outer layer, an inner layer comprising PTFE, and a first coil constrained between the outer layer and the inner layer;
a guiding structure disposed within the outer sheath, the guiding structure comprising a proximal portion and a distal portion, the distal portion including a second coil and a core shaft coaxially disposed within the second coil;
wherein the outer sheath and the guiding structure are configured to be advanced together within a body lumen such that the distal portion of the guiding structure extends distally from the outer sheath during advancement.
21. The catheter system of claim 20 , wherein the outer sheath and the guiding structure are configured to be releasably locked together such that the distal portion of the guiding structure extends a fixed distance distally from the outer sheath during advancement.
22. The catheter system of claim 20 , wherein the core shaft is tapered.
23. The catheter system of claim 20 , wherein the first coil is metallic.
24. The catheter system of claim 20 , further comprising an atraumatic tip at a distal end of the guiding structure.
25. The catheter system of claim 20 , wherein the core shaft comprises a metallic structure.
26. The catheter system of claim 11 , further comprising a radiopaque visualization marker.