Medical device including attachable components
An example system for delivering an implantable heart valve is disclosed. The system includes an inner shaft having a proximal end region, a distal end region and a first coupling member disposed along a portion of the distal end region, wherein the first coupling member includes a first aperture. The system also includes a support shaft having a proximal end region, a distal end region and a second coupling member disposed along a portion of the proximal end region, wherein the second coupling member includes a stem, wherein the stem includes a groove extending circumferentially around the stem. The system also includes a locking clip coupled to the inner shaft, wherein coupling the inner shaft to the support shaft includes extending at least a portion of the locking clip through the first aperture and into at least a portion of the groove.
1. A system for delivering an implantable heart valve, comprising:
an inner shaft having a proximal end region, a distal end region and a first coupling member disposed along a portion of the distal end region, wherein the first coupling member includes a first aperture;
a support shaft having a proximal end region, a distal end region and a second coupling member disposed along a portion of the proximal end region, wherein the second coupling member includes a stem, wherein the stem includes a groove extending circumferentially around the stem; and
a locking clip coupled to the inner shaft;
wherein coupling the inner shaft to the support shaft includes extending at least a portion of the locking clip through the first aperture and into at least a portion of the groove.
2. The system of claim 1 , wherein the locking clip includes a first locking tab having an inner surface, a first end region and a second end region opposite the first end region, and wherein the first end region includes a first projection extending radially inward from the inner surface of the first locking tab.
3. The system of claim 2 , wherein the first projection is designed to extend through the first aperture and nest within the groove of the stem.
4. The system of claim 2 , wherein the first projection has a first engagement surface, the first engagement surface having radius of curvature, and wherein stem includes a second radius of curvature which substantially matches the first radius of curvature of the first engagement surface.
5. The system of claim 4 , wherein the locking clip includes a second locking tab having an inner surface, a first end region and a second end region opposite the first end region, and wherein the first end region includes a second projection extending radially inward from an inner surface of the second locking tab.
6. The system of claim 5 , wherein the first coupling member includes a second aperture, and wherein the second projection is designed to extend through the second aperture and nest within the groove of the stem.
7. The system of claim 6 , wherein the locking clip further includes a first connector and a second connector, and wherein each of the first connector and the second connector extends between the first locking tab and the second locking tab.
8. The system of claim 7 , wherein the first connector faces the second connector.
9. The system of claim 8 , wherein the first connector and the second connector are configured to bias the first locking tab toward the second locking tab.
10. The system of claim 9 , wherein the first projection and the second projection are configured to slide within the groove of the stem.
11. The system of claim 10 , wherein the first coupling member is configured to rotate relative to the second coupling member when the first projection and the second projection are positioned within the groove of the stem.
12. A system for delivering an implantable heart valve, comprising:
a tip assembly having a distal end region and a proximal end region;
a guidewire shaft coupled to the distal end region of the tip assembly;
an inner shaft having a proximal end region, a distal end region and a first coupling member disposed along a portion of the distal end region, wherein the first coupling member includes a first aperture;
a support shaft having a proximal end region, a distal end region and a second coupling member disposed along a portion of the proximal end region, wherein the second coupling member includes a stem, wherein the stem includes a groove extending circumferentially around the stem; and
a locking clip coupled to the inner shaft;
wherein coupling the inner shaft to the support shaft includes extending at least a portion of the locking clip through the first aperture and into at least a portion of the groove.
13. The system of claim 12 , wherein the locking clip includes a first locking tab having an inner surface, a first end region and a second end region opposite the first end region, and wherein the first end region includes a first projection extending radially inward from the inner surface of the first locking tab.
14. The system of claim 13 , wherein the first projection is designed to extend through the first aperture and nest within the groove of the stem.
15. The system of claim 14 , wherein the locking clip includes a second locking tab having an inner surface, a first end region and a second end region opposite the first end region, and wherein the first end region includes a second projection extending radially inward from the inner surface of the second locking tab.
16. The system of claim 14 , wherein the first coupling member has a second aperture, and wherein the second projection is designed to extend through the second aperture and nest within the groove of the stem.
17. The system of claim 16 , wherein the locking clip further includes a first connector and a second connector, and wherein each of the first connector and the second connector extends between the first locking tab and the second locking tab.
18. The system of claim 17 , wherein the first connector and the second connector are configured to bias the first locking tab toward the second locking tab.
19. The system of claim 18 , wherein the first coupling member is configured to swivel relative to the second coupling member when the first projection and the second projection are positioned within the groove of the stem.
20. A method for delivering an implantable heart valve, the method comprising:
attaching a first coupling member of an actuation shaft to a second coupling member of a support shaft using a locking clip of a medical device delivery system, the medical device delivery system including the implantable heart valve;
wherein attaching the first coupling member of the actuation shaft to the second coupling member of the support shaft includes positioning a first projection of the locking clip through a first aperture of the first coupling member into a groove of the second coupling member;
advancing the medical device delivery system to a target site adjacent the heart; and
deploying the implantable heart valve at the target site.