Prosthesis anchoring and deploying device
First Claim
1. A device for effecting an intraluminal delivery and controlled deployment of a body implantable prosthesis, including:
- an elongate prosthesis delivery member having a distal wall segment adapted to contain a radially self-expanding prosthesis in a reduced-radius delivery state against an internal restoring force;
a radially self-expanding prosthesis contained in the distal wall segment and thereby maintained in the reduced-radius delivery state, said prosthesis including a linking structure near a proximal end of the prosthesis;
an elongate prosthesis control member mounted for axial travel relative to the delivery member, toward and away from a delivery position in which a distal end region of the control member extends along the distal wall segment of the delivery member and is disposed radially inwardly of the prosthesis;
a control feature disposed along the distal end region of the control member and extending radially outwardly from the control member beyond a radial midpoint of the linking structure when in the delivery position with the prosthesis so contained, thereby being positioned to allow limited distal travel of the delivery member and prosthesis relative to the control member, and to effect a substantially non-frictional surface engagement with the linking structure upon said distal travel, to anchor the prosthesis against further distal travel relative to the control member.
3 Assignments
0 Petitions
Accused Products
Abstract
A system for intraluminally delivering and deploying stents and other prostheses includes an outer catheter, an inner catheter movable axially relative to the outer catheter, and an anchoring device mounted to a distal end region of the inner catheter. The anchoring device includes one or more control features that interact with a linking structure proximally disposed on the prosthesis, preferably including one or more loops. The control features and loops interact by surface engagement to anchor the prosthesis relative to the inner catheter in a nonfrictional manner, thus to maintain lower axial prosthesis deployment and retraction forces. In one version of the anchor, the control features extend radially outward from a sleeve. In another version, the control features are formed in respective recesses which also receive the loops or other linking structure.
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Citations
56 Claims
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1. A device for effecting an intraluminal delivery and controlled deployment of a body implantable prosthesis, including:
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an elongate prosthesis delivery member having a distal wall segment adapted to contain a radially self-expanding prosthesis in a reduced-radius delivery state against an internal restoring force;
a radially self-expanding prosthesis contained in the distal wall segment and thereby maintained in the reduced-radius delivery state, said prosthesis including a linking structure near a proximal end of the prosthesis;
an elongate prosthesis control member mounted for axial travel relative to the delivery member, toward and away from a delivery position in which a distal end region of the control member extends along the distal wall segment of the delivery member and is disposed radially inwardly of the prosthesis;
a control feature disposed along the distal end region of the control member and extending radially outwardly from the control member beyond a radial midpoint of the linking structure when in the delivery position with the prosthesis so contained, thereby being positioned to allow limited distal travel of the delivery member and prosthesis relative to the control member, and to effect a substantially non-frictional surface engagement with the linking structure upon said distal travel, to anchor the prosthesis against further distal travel relative to the control member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A prosthesis delivery and deployment device, including:
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an elongate prosthesis delivery member having a distal wall segment adapted to contain a radially self-expanding prosthesis in a reduced-radius delivery state against an internal restoring force;
an elongate control member mounted for axial travel relative to the delivery member, toward and away from a delivery position in which a distal end region of the control member extends along the distal wall segment of the delivery member; and
a prosthesis anchor mounted to the distal end region and comprising at least one elongate axially directed control feature extending radially outwardly from the control member and thereby positioned to effect a releasable engagement with a proximal-end linking structure of a radially self-expanding prosthesis when in the delivery position and with the prosthesis so contained;
wherein the anchor, when in said engagement with the linking structure, is operable to anchor the prosthesis against distal travel relative to the control member. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
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48. A prosthesis anchoring device adapted for fixation to a prosthesis deployment member, the anchoring device including:
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a generally cylindrical anchoring sleeve having a central opening extending axially therethrough to facilitate a slideable installation of the anchoring sleeve onto an elongate prosthesis deployment member for fixation along a distal end region of the deployment member; and
a control feature extended radially outwardly from the anchoring sleeve and adapted to extend radially into a proximal-end linking structure of a radially self-expanding prosthesis when the prosthesis is maintained in a reduced-radius state against an internal restoring force and selectively axially aligned with said distal end region;
whereby the control feature, with the anchoring sleeve fixed to a deployment member and when so extending into a proximal-end linking structure of a radially self-expanding prosthesis so maintained and aligned, is adapted to engage the linking structure to prevent any substantial distal movement of the prosthesis relative to the deployment member. - View Dependent Claims (49, 50, 51, 52, 53, 54)
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55. A process for loading a radially self-expanding prosthesis for subsequent deployment in a body lumen, including:
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positioning a radially self-expanding prosthesis along and in surrounding relation to a distal end region of an elongate prosthesis control member with a proximal end linking structure of the prosthesis disposed near axially spaced apart first and second features that extend radially outwardly from the control member;
with the prosthesis so positioned, radially contracting the prosthesis to a reduced-radius delivery state against an internal elastic restoring force to move the linking structure into a delivery position between the first and second features whereby the first and second features cooperate to limit axial travel of the prosthesis relative to the control member to a predetermined range so long as the prosthesis is maintained in the delivery state; and
selecting an axial dimension of the linking structure with respect to an axial spacing between the first and second features whereby the predetermined range is at least twice the axial dimension of the linking structure. - View Dependent Claims (56)
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Specification