Apparatus and method for deployment of radially expandable stents by a mechanical linkage
First Claim
1. In combination with an expandable prosthesis, an apparatus for intraluminal delivery and deployment of the expandable prosthesis at a site within a body lumen, comprising:
- a support for supporting the expandable prosthesis while being delivered to the site within the body lumen; and
a radially displaceable mechanical linkage connected to said support for radially displacing said support, said linkage adapted to deploy the expandable prosthesis when said linkage is displaced radially outward, said linkage permitting continuous fluid flow within the body lumen while the expandable prosthesis is being deployed.
3 Assignments
0 Petitions
Accused Products
Abstract
The invention provides a method and apparatus for intraluminal delivery and deployment of an expandable prosthesis at a site within a body lumen. The apparatus for intraluminal delivery and deployment includes a support for supporting the expandable prosthesis while being delivered to the site within the body lumen, and a radially displaceable mechanical linkage connected to the support for radially displacing the support. The linkage is adapted to deploy the expandable prosthesis when it is displaced radially outward. The linkage permits continuous fluid flow within the body lumen while the expandable prosthesis is being deployed. The present invention can also be used without stents for expanding a body lumen. The present method comprises the steps of transmitting a radially, outwardly directed displacement force to the support from a control mechanism, the support being displaced radially outwardly to an expanded stance such that the prosthesis contacts the body passageway, and transmitting a radially, inwardly directed displacement force to the support from a control mechanism, the support being displaced radially inwardly to a recoiled stance less than the diameter of the body passageway while leaving the prosthesis in contact the body passageway. Fluid flow is permitted throughout the delivery and deployment process.
574 Citations
45 Claims
-
1. In combination with an expandable prosthesis, an apparatus for intraluminal delivery and deployment of the expandable prosthesis at a site within a body lumen, comprising:
-
a support for supporting the expandable prosthesis while being delivered to the site within the body lumen; and a radially displaceable mechanical linkage connected to said support for radially displacing said support, said linkage adapted to deploy the expandable prosthesis when said linkage is displaced radially outward, said linkage permitting continuous fluid flow within the body lumen while the expandable prosthesis is being deployed. - View Dependent Claims (2, 3)
-
-
4. In combination with a stem, an apparatus at a predetermined location on a catheter for intraluminally deploying the stent, comprising:
-
a member, said member being movably mounted with respect to the catheter; a deployment wire having a distal end fixedly coupled to said member for axially moving said member with respect to the catheter; a plurality of wings surrounding said member to form a support surface for the stent; and a linkage for linking said wings to said member and the catheter, said linkage causing said wings to displace radially outward when said member is moved axially by said deployment wire in a first direction and displace radially inward when said member is moved axially by said deployment wire in a second direction. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
-
-
29. In combination with a stent, an apparatus at a predetermined location on a catheter for intraluminally deploying the stent, comprising:
-
a member, said member being movably mounted with respect to the catheter; a wire having a distal end coupled to said member for axially moving said member with respect to the catheter; a plurality of first and second arms; a plurality of wings surrounding said member to form a support surface for the stent, each of said wings being pivotally linked to said member by at least one of said first arms; and a rigid portion connected to the catheter, each of said wings being pivotally linked to said rigid portion by at least one of said second arms, whereby a force applied to said wire causes said wings displace radially outward when said member is moved axially by said wire in a first direction and displace radially inward when said member is moved axially by said wire in a second direction. - View Dependent Claims (30)
-
-
31. An apparatus at a predetermined location on a catheter for expanding a graft, stent, or stenosed body lumen or the like, comprising:
-
a member, said member being movably mounted with respect to the catheter; a deployment wire having a distal end coupled to said member for axially moving said member with respect to the catheter; a plurality of wings surrounding said member; a linkage for linking said wings to said member and the catheter and for providing a force sufficient to expand the graft, stent, stenosed body lumen or the like; initiating means axially movably mounted with respect to the catheter for initiating displacement of said wings; and an initiating wire fixedly coupled to said initiating means for axially moving said initiating means with respect to the catheter. - View Dependent Claims (32)
-
-
33. An apparatus at a predetermined location on a catheter for expanding a graft, stem, or stenosed body lumen or the like, comprising:
-
a member, said member being movably mounted with respect to the catheter; a deployment wire having a distal end coupled to said member for axially moving said member with respect to the catheter; a plurality of wings surrounding said member; a linkage for linking said wings to said member and the catheter and for providing a force sufficient to expand the graft, stent, stenosed body lumen or the like; a rigid portion axially mounted with respect to said catheter, said rigid portion being coupled to said wings; and a plurality of first and second arms, each of said wings being linked to said member by at least one of said first arms and to said rigid portion by at least one of said second arms. - View Dependent Claims (34)
-
-
35. An apparatus at a predetermined location on a catheter for expanding a graft, stent, or stenosed body lumen or the like, comprising:
-
a member, said member being movably mounted with respect to the catheter; a deployment wire having a distal end coupled to said member for axially moving said member with respect to the catheter; a plurality of wings surrounding said member; a linkage for linking said wings to said member and the catheter and for providing a force sufficient to expand the graft, stent, stenosed body lumen or the like; a rigid portion axially mounted with respect to said catheter, said rigid portion being coupled to said wings; and a steering wire fixedly coupled at a distal end to said rigid portion. - View Dependent Claims (36)
-
-
37. An apparatus at a predetermined location on a catheter for expanding a graft, stent, or stenosed body lumen or the like, comprising:
-
a member, said member being movably mounted with respect to the catheter; a deployment wire having a distal end coupled to said member for axially moving said member with respect to the catheter; a plurality of wings surrounding said member; a linkage for linking said wings to said member and the catheter and for providing a force sufficient to expand the graft, stent, stenosed body lumen or the like; initiating means axially movably mounted with respect to the catheter for initiating displacement of said wings; and a rigid portion axially mounted with respect to said catheter, said rigid portion being coupled to said wings; wherein said rigid portion is articulately mounted at a distal end of the catheter. - View Dependent Claims (38)
-
-
39. An apparatus at a predetermined location on a catheter for expanding a graft, stem, or stenosed body lumen or the like, comprising:
-
a member, said member being movably mounted with respect to the catheter; a deployment wire having a distal end coupled to said member for axially moving said member with respect to the catheter and a proximal end terminated with a slotted portion; a plurality of wings surrounding said member; and a linkage for linking said wings to said member and the catheter and for providing a force sufficient to expand the graft, stent, stenosed body lumen or the like. - View Dependent Claims (40)
-
-
41. A method for intraluminally implanting a prosthesis disposed on a mechanical support at a predetermined location on a catheter which has been inserted into a body passageway, comprising the steps of:
-
transmitting a radially, outwardly directed displacement force substantially instantaneously to the support from a control mechanism, said support being displaced radially outwardly to an expanded stance such that the prosthesis contacts the body passageway; transmitting a radially, inwardly directed displacement force substantially instantaneously to the support from a control mechanism, said support being displaced radially inwardly to a recoiled stance less than the diameter of the body passageway while leaving the prosthesis in contact the body passageway; and permitting fluid flow while transmitting either of said radially, outwardly directed displacement force or said radially, inwardly directed displacement force. - View Dependent Claims (42, 43, 44, 45)
-
Specification