Controlled deployment delivery system
First Claim
1. A controlled stent-graft deployment delivery system, comprising:
- a stent-graft;
a retractable primary sheath containing said stent-graft in a first constrained diameter configuration;
an outer tube within the retractable primary sheath and within the stent-graft;
an inner tube within the outer tube, wherein the inner tube and the outer tube both axially can move relative to the retractable primary sheath and to each other;
a cap coupled to a distal end of the inner tube and configured to retain at least a portion of a proximal portion of the stent-graft in a radially compressed configuration, wherein a controlled relative axial movement between the outer tube and the inner tube releases the proximal end of the stent-graft from the cap and from the radially compressed configuration.
1 Assignment
2 Petitions
Accused Products
Abstract
A controlled stent-graft deployment delivery system (10 50 or 900) includes a stent-graft (30 or 63), a retractable primary sheath (40) containing the stent-graft in a first constrained diameter configuration, an outer tube (18) within the retractable primary sheath and within the stent-graft, and an inner tube (20) within the outer tube, where the inner tube and the outer tube both axially move relative to the retractable primary sheath and to each other. The system further includes a cap (15) coupled to a distal end of the inner tube and configured to retain at least a portion of a proximal area of the stent-graft in a radially compressed configuration. A distal assembly (100) provides controlled relative axial movement between the outer tube and the inner tube enabling the release of the proximal end (65, 67, 68, and 69) of the stent-graft from the cap and from the radially compressed configuration.
346 Citations
19 Claims
-
1. A controlled stent-graft deployment delivery system, comprising:
-
a stent-graft; a retractable primary sheath containing said stent-graft in a first constrained diameter configuration; an outer tube within the retractable primary sheath and within the stent-graft; an inner tube within the outer tube, wherein the inner tube and the outer tube both axially can move relative to the retractable primary sheath and to each other; a cap coupled to a distal end of the inner tube and configured to retain at least a portion of a proximal portion of the stent-graft in a radially compressed configuration, wherein a controlled relative axial movement between the outer tube and the inner tube releases the proximal end of the stent-graft from the cap and from the radially compressed configuration. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A controlled stent-graft deployment delivery system, comprising:
-
a retractable primary sheath; an outer tube within the retractable primary sheath; an inner tube within the outer tube, wherein the inner tube can move axially relative to the outer tube; a cap axially fixed to a distal end of the inner tube; and a retention mechanism attached to the outer tube for retaining a proximal end of a stent-graft in a constrained diameter configuration while the end of the stent graft is still located within the cap while still enabling axial and radial movement of the stent-graft, wherein the retention mechanism comprises a proximal lock fixed to the outer tube. - View Dependent Claims (8, 9, 10)
-
-
11. A controlled stent-graft deployment delivery system, comprising:
-
a retractable primary sheath; an outer tube within the retractable primary sheath; an inner tube within the outer tube, wherein the inner tube can move axially relative to the outer tube; a cap axially fixed to a distal end of the inner tube, wherein the cap is formed from a shroud portion of a tapered tip coupled to the distal end of the inner tube; a retention mechanism attached to the outer tube for retaining a proximal end of a stent-graft in a constrained diameter configuration while the end of the stent-graft is still located within the cap while still enabling axial and radial movement of the stent-graft; and means for controlled coaxial movement of the inner tube relative to the outer tube, wherein the means for controlled coaxial movement comprises a spinning collar attached to the inner tube that causes a proximal lock to move in and out of the shroud portion of the tip by advancing along a threaded member attached to the outer tube.
-
-
12. A controlled stent-graft deployment delivery system, comprising:
-
a retractable primary sheath; an outer tube within the retractable primary sheath; an inner tube within the outer tube, wherein the inner tube can move axially relative to the outer tube; a cap axially fixed to a distal end of the inner tube; a retention mechanism attached to the outer tube for retaining a proximal end of a stent-graft in a constrained diameter configuration while the end of the stent graft is still located within the cap while still enabling axial and radial movement of the stent-graft; and a second retention mechanism for retaining a distal end on the stent-graft undeployed while a remaining portion of the stent-graft is deployed.
-
-
13. A method for controlled deployment of a stent-graft, comprising the steps of:
-
constraining a proximal end of a stent-graft radially under a cap while partially deploying a remaining portion of the stent-graft comprising the step of constraining proximal springs of the stent-graft between a shroud area of a proximal tip and a proximal lock coupled to an inner tube; adjusting at least one of the axial and radial positions of the stent-graft after the partial deployment of the remaining portion; and releasing the proximal end of the stent-graft by controlled coaxial movement between the cap and a tube retaining the stent-graft within the cap.
-
-
14. A method for controlled deployment of a stent-graft, comprising the steps of:
-
constraining a proximal end of a stent-graft radially under a cap while partially deploying a remaining portion of the stent-graft comprising the step of constraining a plurality of apices of a proximal spring of the stent-graft between a shroud area of a proximal tip and a proximal lock having ribs; adjusting at least one of the axial and radial positions of the stent-graft after the partial deployment of the remaining portion; and releasing the proximal end of the stent-graft by controlled coaxial movement between the cap and a tube retaining the stent-graft within the cap.
-
-
15. A controlled stent-graft deployment delivery system, comprising:
-
a self expanding stent-graft compressed on a delivery system, the stent graft having a proximal spring having apices extending proximally therefrom; a proximal lock fixed to an outer tube of said delivery system, said proximal lock having protrusions over which said apices extend at the proximal end of the stent graft; a shroud fixed to a distal end of an inner tube of said delivery system and surrounding at least a portion of a proximal portion of apices of a spring of the stent-graft in a radially compressed configuration and in close proximity to the radial ends of the protrusions so that the stent graft spring apices are prevented from releasing, wherein a controlled relative axial movement between the outer tube and the inner tube releases the proximal end of the stent-graft from the shroud. - View Dependent Claims (16, 17)
-
-
18. A controlled stent-graft deployment delivery method comprising:
-
inserting a self expanding stent graft inside a stent graft delivery system into a vessel passage; performing a partial deployment of the stent graft; releasing a proximal lock catch of a stent graft proximal end retaining system by causing an inner tube connected to a first component of said catch to move in a first axial direction with respect to a first component coupling component connected to an outer tube; releasing the proximal end of the stent graft by moving the inner tube in a second axial direction with respect to the outer tube. - View Dependent Claims (19)
-
Specification