Delivery system and method for deployment of foreshortening endoluminal devices
First Claim
1. A delivery system for an endoluminal device, the delivery system comprising:
- an endoluminal device having a compressed configuration;
an outer sheath that radially surrounds the endoluminal device in the compressed configuration;
a pusher positioned at one end of the endoluminal device; and
a linkage in communication with both the pusher and the outer sheath that coordinates movement of the outer sheath in a first direction with simultaneous movement of the pusher in a second direction opposite the first direction.
2 Assignments
0 Petitions
Accused Products
Abstract
A delivery system comprising an endoluminal device, an outer sheath that radially surrounds the endoluminal device, a pusher positioned at one end of the endoluminal device, and a linkage between the pusher and the outer sheath that coordinates movement of the outer sheath in a first direction with simultaneous movement of the pusher in a second direction opposite the first direction. This delivery system is particularly useful for endoluminal devices that foreshorten, and may comprise the outer sheath moving a first distance (d1) and the pusher moving a second distance (d2), where d2/d1 is approximately equal to the foreshortening ratio. The delivery system of this invention enables a foreshortening device, such as a vena cava filter, or stent, graft, or combination thereof, to be deployed with its end in a precise deployment location without foreshortening causing the end to move from the deployment location as the stent expands.
405 Citations
69 Claims
-
1. A delivery system for an endoluminal device, the delivery system comprising:
-
an endoluminal device having a compressed configuration;
an outer sheath that radially surrounds the endoluminal device in the compressed configuration;
a pusher positioned at one end of the endoluminal device; and
a linkage in communication with both the pusher and the outer sheath that coordinates movement of the outer sheath in a first direction with simultaneous movement of the pusher in a second direction opposite the first direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 42, 44, 45, 54, 55, 56, 57, 65, 66)
-
- 18. A manipulator for a delivery system for an endoluminal device, the delivery system comprising an outer sheath that radially surrounds the endoluminal device in a compressed configuration and a pusher positioned at one end of the endoluminal device, the manipulator comprising a first interface for connecting the manipulator in communication with the outer sheath, a second interface for connecting the manipulator in communication with the pusher, a linkage coupled to the first and second interface for coordinating movement of the outer sheath in a first direction with simultaneous movement of the pusher in a second direction opposite the first direction, and means for actuating the linkage.
-
23. A delivery system adapted to deliver an endoluminal device from a proximal location outside a lumen to a distal location inside the lumen, the delivery system comprising:
-
the endoluminal device in a compressed configuration, the endoluminal device having a compressed length (LC), an expanded length (LE), and a foreshortening ratio
greater than 0;
a proximally retractable outer sheath that radially surrounds the endoluminal device;
a distally advanceable pusher positioned at a proximal end of the endoluminal device; and
a rack and pinion system in communication with both the pusher and the outer sheath that coordinates retraction of the outer sheath a first distance of retraction (d1) with simultaneous advancement of the pusher a second distance of advancement (d2) of the pusher, the rack and pinion system comprising a first rack attached to the outer sheath, a second rack attached to the pusher, and a pair of rotationally-interlocked pinions supported between the first rack and the second rack, the pair of rotationally-interlocked pinions comprising a first pinion having a first diameter (D1) adapted to interface with the first rack and a second pinion (D2) having a second, relatively smaller diameter adapted to interface with the second rack, wherein the gear ratio
is approximately equal to the foreshortening ratio. - View Dependent Claims (24, 25, 26, 27, 28, 48, 49, 50, 51, 52, 53, 61, 62, 63, 64)
-
-
29. A method for endoluminal deployment of an endoluminal device, the method comprising the steps of:
-
(a) introducing a delivery system from a first location outside a lumen to a second location inside the lumen, the delivery system comprising an endoluminal device in a compressed configuration;
an outer sheath that radially surrounds the endoluminal device in the compressed configuration;
a pusher positioned at a first end of the endoluminal device; and
a linkage in communication with both the pusher and the outer sheath for coordinating simultaneous movement of the outer sheath and the pusher, the second location comprising a location in which a second end of the endoluminal device is axially aligned with a desired target location on the lumen; and
(b) deploying the endoluminal device by manipulating the linkage to move the outer sheath in a first direction while simultaneously moving the pusher in a second direction opposite the first direction. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 67, 68)
-
-
43. A delivery system adapted to deliver an endoluminal device from a proximal location outside a lumen to a distal location inside the lumen, the delivery system comprising:
-
the endoluminal device in a compressed configuration, the endoluminal device having a compressed length (LC), an expanded length (LE), and a foreshortening ratio
greater than 0;
a proximally retractable outer sheath that radially surrounds the endoluminal device;
a distally advanceable pusher positioned at a proximal end of the endoluminal device; and
a screw shaft and traveler system in communication with both the pusher and the outer sheath that coordinates retraction of the outer sheath a first distance of retraction (d1) with simultaneous advancement of the pusher a second distance of advancement (d2) of the pusher, the screw shaft and traveler system comprising a screw shaft having a first threaded flight having a first pitch (P1) corresponding to a number of turns per unit length and a second threaded flight having a second corresponding pitch (P2), a first traveler engaged by the first threaded flight and in linear communication with the outer sheath, a second traveler engaged by the second threaded flight and in linear communication with the pusher; and
means for turning the screw shaft., wherein the ratio of the first pitch to the second pitch
is approximately equal to the foreshortening ratio. - View Dependent Claims (69)
-
Specification