Stent positioning apparatus and method
First Claim
1. An apparatus for securing a therapeutic device, such as a stent and the like, onto a distal end of a deployment device, said therapeutic device having predetermined inner and outer diameters, said apparatus comprising:
- a first member having a radially deformable wall defining a channel along its longitudinal axis, said first member having a plurality of forming members thereon, said channel having a diameter greater than said outer diameter of said therapeutic device such that said therapeutic device and said deployment device are positionable within said channel; and
a second member having an opening for receiving said first member, said first member insertable within said opening, said second member applying a crimping pressure on said first member such that said forming members on said first member reduces the inner diameter of said therapeutic device nonuniformly, thereby securing said therapeutic device onto said deployment device for positioning within a patient during a surgical procedure said forming members adapted to produce noncontinuous depressions in said therapeutic device to prevent both longitudinal and rotational relative movement between said therapeutic device and said deployment device.
3 Assignments
0 Petitions
Accused Products
Abstract
A stent positioning apparatus and method are provided for the attachment of a stent to a balloon to be used in the treatment of stenosis, such as coronary angioplasty. In one preferred embodiment, a first generally cylindrical member has a radially deformable wall defining a channel within which the stent and balloon assembly are inserted. A second generally cylindrical member has an opening sufficient to receive the first member with the assembly therein. The second member is then slid longitudinally over the deformable wall of the first member causing nonuniform depressions to be formed in the inner diameter of the stent, thus crimping the stent onto the balloon. Thus, the stent is attached to the balloon without damage and without risk of the stent falling off the balloon prematurely.
306 Citations
39 Claims
-
1. An apparatus for securing a therapeutic device, such as a stent and the like, onto a distal end of a deployment device, said therapeutic device having predetermined inner and outer diameters, said apparatus comprising:
-
a first member having a radially deformable wall defining a channel along its longitudinal axis, said first member having a plurality of forming members thereon, said channel having a diameter greater than said outer diameter of said therapeutic device such that said therapeutic device and said deployment device are positionable within said channel; and a second member having an opening for receiving said first member, said first member insertable within said opening, said second member applying a crimping pressure on said first member such that said forming members on said first member reduces the inner diameter of said therapeutic device nonuniformly, thereby securing said therapeutic device onto said deployment device for positioning within a patient during a surgical procedure said forming members adapted to produce noncontinuous depressions in said therapeutic device to prevent both longitudinal and rotational relative movement between said therapeutic device and said deployment device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. An apparatus for securing a therapeutic device, such as a stent, and the like, onto a deployment device, said therapeutic device being dimensioned so as to be positionable over said deployment device, said apparatus comprising:
-
an inner member comprising a first channel and a plurality of forming members placed on said inner member, said first channel defining an opening dimensioned to receive said therapeutic device and said deployment device, said forming members being noncontinuously placed on said inner member; and an outer member comprising a second channel dimension to receive said inner member, said outer member slidable relative to said inner member, said second channel and said forming members cooperating to apply a nonuniform crimping force on said therapeutic device to produce one or more depressions in said therapeutic device, whereby said therapeutic device is secured to said deployment device. - View Dependent Claims (14, 15, 16, 17, 18)
-
-
19. An apparatus for securing a therapeutic device on a deployment device, comprising:
-
an inner member comprising a channel and at least one forming member, said channel dimensioned to receive such therapeutic and said deployment devices; and a pressure member for applying a crimping pressure on said forming member to selectively deform said therapeutic device, said forming members adapted to produce continuous depressions in said therapeutic device whereby said therapeutic device is secured on said deployment device. - View Dependent Claims (20, 21, 22, 23, 24)
-
-
25. An apparatus for securing a therapeutic device on a deployment device, comprising:
-
a channel dimensioned to receive said therapeutic device and said deployment device; forming means placed on said channel so as to be adjacent said therapeutic device, said forming means being arranged on said channel so as to be noncontinuous with respect to the outer surface of said therapeutic device; and pressure means for applying a crimping pressure on said forming means to selectably deform said therapeutic device to produce noncontinuous depressions in said therapeutic device, whereby said therapeutic device is secured on said deployment device. - View Dependent Claims (32, 33, 34, 35)
-
-
26. A method for securing a therapeutic device, such as a stent and the like, on a deployment device, comprising:
-
a. positioning the therapeutic device over the deployment device; b. placing a plurality of forming members adjacent to the therapeutic device; and c. applying a force to the forming members to cause them to engage the therapeutic device and selectively form the therapeutic device to produce noncontinuous depressions in said therapeutic device, such that said therapeutic device engages the deployment device in a crimping manner, but substantially solely in the locations of said forming members. - View Dependent Claims (27, 28, 29, 30, 31)
-
-
36. An apparatus comprising:
-
a therapeutic device having predetermined inner and outer diameters; a deployment device; a first member having a radially deformable wall defining a channel along its longitudinal axis, said first member having a plurality of forming members thereon, said channel having a diameter greater than said outer diameter of said therapeutic device such that said device and said deployment device are positionable within said channel; and a second member having an opening for receiving said first member, said first member insertable within said opening, said second member applying a crimping pressure on said first member such that said forming members on said first member reduces the inner diameter of said therapeutic device nonuniformly, thereby securing said therapeutic device onto said deployment device for positioning within a patient during a surgical procedure said forming members adapted to produce noncontinuous depressions in said therapeutic device to prevent both longitudinal and rotational relative movement between said therapeutic device and said deployment device. - View Dependent Claims (37, 38, 39)
-
Specification