Tensioned sheathing aids
A medical device apparatus may include a medical implant including an anchor member configured to actuate between a delivery configuration and a deployed configuration operatively connected to a delivery system, the delivery system including an outer sheath and an inner catheter disposed within the outer sheath, and a sheathing aid connecting the delivery system to the medical implant, the sheathing aid being configured to guide the medical implant into the outer sheath upon relative closing movement therebetween. The sheathing aid may include a plurality of tethers extending from the inner catheter to a proximal end of the anchor member, and a release mechanism slidably disposed within a coupler ring coupled to a distal end of the inner catheter. The plurality of tethers may be releasably coupled to the release mechanism.
1. A medical device apparatus, comprising:
a medical implant including a braided anchor member operatively connected to a delivery system, the delivery system including a handle, an outer sheath extending distally from the handle, and an inner catheter disposed within the outer sheath; and
a sheathing aid connecting the delivery system to the medical implant, the sheathing aid being configured to guide the medical implant into the outer sheath upon compression of the sheathing aid as the sheathing aid is withdrawn into the outer sheath;
wherein the sheathing aid includes a plurality of filaments extending from the inner catheter to a proximal end of the braided anchor member, and a cleat disc disposed within a coupler ring fixedly attached to a distal end of the inner catheter;
wherein the plurality of filaments is releasably coupled to the cleat disc,
wherein the delivery system includes at least one actuator element extending from the inner catheter to the medical implant, the at least one actuator element being configured to reversibly shift the braided anchor member from an elongated delivery configuration to an enlarged deployed configuration,
wherein each of the at least one actuator element passes through the cleat disc.
2. The medical device apparatus of claim 1 , wherein the cleat disc is movably disposed within the coupler ring.
3. The medical device apparatus of claim 1 , wherein the cleat disc includes one or more cleat posts extending distally from the cleat disc.
4. The medical device apparatus of claim 3 , wherein the plurality of filaments is releasably coupled to the one or more cleat posts.
5. The medical device apparatus of claim 3 , wherein the one or more cleat posts comprises three cleat posts.
6. The medical device apparatus of claim 1 , wherein the inner catheter includes a plurality of fingers extending distally from the coupler ring, the plurality of fingers being releasably coupled to the medical implant.
7. The medical device apparatus of claim 6 , wherein the plurality of filaments extend through one or more openings disposed within a side wall of the coupler ring.
8. The medical device apparatus of claim 1 , wherein at least some of the plurality of filaments each include a tubular member disposed thereon between the inner catheter and the medical implant.
9. The medical device apparatus of claim 8 , wherein the at least some of the plurality of filaments comprises all of the plurality of filaments.
10. The medical device apparatus of claim 8 , wherein each tubular member has a length, the length of all of the tubular members being substantially similar.
11. The medical device apparatus of claim 8 , wherein the tubular members have varying lengths.
12. The medical device apparatus of claim 1 , wherein each of the at least one actuator element includes a tubular sleeve disposed thereon and extending between the cleat disc and the medical implant.
13. The medical device apparatus of claim 1 , wherein each of the at least one actuator element includes an enlarged portion disposed between the cleat disc and the medical implant.
14. The medical device apparatus of claim 1 , wherein proximal translation of the at least one actuator element moves the cleat disc proximally after the braided anchor member has been shifted to the enlarged deployed configuration.
15. The medical device apparatus of claim 14 , wherein moving the cleat disc proximally releases the plurality of filaments from the cleat disc.
16. The medical device apparatus of claim 1 , wherein the braided anchor member includes a plurality of crowns, wherein each of the plurality of filaments is releasably attached at one of the plurality of crowns.