Patent US3162249A successfully refreshed from Google Patents.
EP0696447A2
Expired / Lapsed
EP
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Apparatus and methods for deployment release of intraluminal prostheses
Assignee: Medtronic AneuRx Inc
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Filing: 1995-08-10
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Granted: —
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Expires: 2015-08-10
Abstract
Abstract A delivery catheter for a radially compressible tubular prosthesis comprises an elongate shaft slidably received within an elongate sheath. The prosthesis is carried over the distal end of the shaft where it is contained in a radially compressed configuration by the sheath. After introducing the catheter to a desired target location within a body lumen, the prosthesis may be released by proximally retracting the sheath. Optionally, the prosthesis will remain anchored to the shaft during at least part of the release procedure, permitting the user to recapture the prosthesis by distally advancing the sheath. Additionally, an alternative delivery catheter for a radially compressible tubular prosthesis is provided, comprising an elongate shaft slidably received within a tubular cover. The prosthesis is carried within a plurality of elongate, relatively hard runners, and is restrained in a radially compressed configuration by the cover. The prosthesis may be released by proximally retracting the cover. The runners may optionally remain disposed about the prosthesis to be retracted separately, or, alternatively, the runners retract proximally with the cover as the prosthesis slides over the hard runner surfaces.
Inventors
- 👤 Jay A. Lenker
- 👤 Michael A. Evans
- 👤 Steven W. Kim
- 👤 Brian Glynn
- 👤 Gwendolyn A. Watanabe
- 👤 Kirsten Freislinger
- 👤 Timothy J. Ryan
- 👤 Christopher K. Zarins
- 👤 Richard O. Murphy
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-22 23:09
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/06; A61F2/07; A61F2/82; A61F2/86; A61F2/90; A61F2/91; A61F2/915; A61F2/95; A61F2/9517; A61F2/954; A61F2/962; A61F2/97; A61F2/0095; A61F2/848; A61F2/89; A61F2/9522; A61F2002/065; A61F2002/067; A61F2002/075; A61F2002/826; A61F2002/91533; A61F2002/91541; A61F2002/9505; A61F2002/9511; A61F2002/9534; A61F2/966; A61F2002/9665; A61F2210/00; A61F2210/0014; A61F2210/0019; A61F2220/00; A61F2220/0025; A61F2220/0058; A61F2220/0075; A61F2230/00; A61F2230/0002; A61F2230/0028; A61F2230/0054; A61F2240/00; A61F2240/001; A61F2250/00; A61F2250/0058; A61F2250/0096; A61F2250/0098
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
136 words
A delivery catheter for positioning radially compressible prostheses (10, P), said catheter comprising: an elongate flexible shaft (34, 74, 94, 116, 122, 152) having a proximal end (44, 86) and a distal end (42, 78, 88, 102, 112, 166); a retaining structure (50, 124, 154, 156) near the distal end (42, 78, 88, 102, 112, 166) of the shaft (34, 74, 94, 116, 122) which releasably holds the axial position of the prosthesis (10, P) on the shaft (34, 74, 94, 116, 122, 152); and a sheath (32, 72, 82, 100, 110, 120, 164) slidably received over the shaft (34, 74, 94, 116, 122, 152) to cover the prosthesis (10, P) while said prosthesis (10, P) is axially held on the shaft (34, 74, 94, 116, 122, 152) by the retaining structure (50, 124, 154, 156).
Claim 2
Dependent Claim
78 words
A delivery catheter as in claim 1, wherein the sheath (72, 82, 100, 110, 120, 164) has a deployable outwardly flared distal end (78, 88, 102, 112, 166) to facilitate proximal and distal motion over the prosthesis (P), and further comprising means on the sheath (72, 82, 100, 110, 120, 164) for reconfiguring the distal end (78, 88, 102, 112, 166) of the sheath (72, 82, 100, 110, 120, 164) between a non-flared configuration and a flared configuration.
Claim 3
Dependent Claim
103 words
A delivery catheter as in claim 1 or 2, wherein the retaining structure comprises at least one locking stay (50, 124) on the shaft (34, 122), and wherein the locking stay (50, 124) is disposed over the outside of the shaft (34, 122) and extends radially outward by a distance sufficient to engage the interior surface of the sheath (32, 120), whereby the stay (50, 124) will extend through an aperture in the prosthesis (10) to hold the prosthesis (10) axially in place relative to the shaft (34, 122) as the sheath (32, 120) is axially translated relative to the shaft (34, 122).
Claim 4
Dependent Claim
106 words
A prosthesis cartridge for use with a delivery catheter including an elongate flexible shaft and an elongate member slidably attached to the shaft, said prosthesis cartridge comprising: a shaft extension having a proximal end, a distal end, and a coupling member at the proximal end which couples to a distal end of the elongate flexible shaft of the delivery catheter; a sheath extension having a proximal end, a distal end, and a coupling member at the proximal end which couples to a distal end of the elongate member of the delivery catheter; and a prosthesis radially compressed over the shaft extension and within the sheath extension.
Claim 5
Independent Claim
155 words
A method for preparing a prosthesis delivery catheter, said method comprising: providing a delivery catheter including: (a) an elongate flexible shaft having a proximal end, a distal end, and a coupling member at the distal end; and (b) an elongate member slidably attached to the shaft and having a proximal end, a distal end, and a coupling member at the distal end; providing a prosthesis cartridge including: (a) a shaft extension having a proximal end, a distal end, and a coupling member at the proximal end; (b) a sheath extension having a proximal end, a distal end and a coupling member at the proximal end; and (c) a prothesis radially compressed over the shaft extension and within the sheath extension; and attaching the coupling member on the shaft extension to the coupling member on the flexible elongate shaft and attaching the coupling member on the sheath extension to the coupling member on the elongate member.
Claim 6
Dependent Claim
73 words
A delivery catheter for placement of a radially compressible prosthesis, the catheter comprising: an elongate flexible shaft structure having a proximal end, a distal end, and a prosthesis receptacle near the distal end; at least one runner disposed over the prosthesis receptacle of the shaft structure; and a tubular cover slidably disposed over at least the prosthesis receptacle of the shaft; wherein the cover restrains the prosthesis against the at least one runner.
Claim 7
Dependent Claim
76 words
A delivery catheter as claimed in claim 6, further comprising a plurality of axially disposed elongate runners affixed together at their proximal ends, wherein the proximal ends of the runners are proximal of the prosthesis receptacle, and the runners extend distally of the constrained prosthesis, and wherein the runners are flexible and affixed to the shaft structure so that the runners remain over the prosthesis receptacle as the cover is axially translated over the shaft structure.
Claim 8
Dependent Claim
101 words
A delivery catheter for placement of a compressible prosthesis, the catheter comprising: an elongate flexible shaft structure having a proximal end, a distal end, and a prosthesis receptacle near the distal end; a plurality of elongate runners extending distally from the distal end of the shaft structure, the runners having a hardness greater than that of the cover; and a tubular cover slidably disposed over the prosthesis receptacle on the shaft; wherein the runners are radially constrained toward the prosthesis receptacle when the cover is distally extended over the prosthesis receptacle and are radially released when the cover is proximally retracted.
Claim 9
Dependent Claim
39 words
A delivery catheter as claimed in claim 8, further comprising a friction reducer tube slidably disposed about the cover and insertable within a valve seal of an introduction sheath, the friction reducer tube including sealing means against the cover.
Claim 10
Dependent Claim
79 words
An improved delivery catheter for placement of a branching, radially compressible prosthesis in a branching body lumen, the catheter of the type having an elongate shaft structure including a proximal end, a distal end, an axis therebetween, and a prosthesis receptacle near the distal end, the improvement comprising: a rotation marker on the shaft structure adjacent to the prosthesis receptacle, the rotation marker having an asymmetric radiographic image, the image being asymmetric about the axis of the shaft structure.
Claim 11
Dependent Claim
100 words
An expandable tip delivery catheter for placement of a radially compressible prosthesis having a large diameter portion and a small diameter end, the catheter comprising: an elongate flexible shaft having a proximal end, a distal end, and a prosthesis receptacle near the distal end; and a cover slidably disposed about the shaft, the cover comprising: a body portion; and a resilient structure extending distally from the body portion, the resilient structure having an inherent cross-section which is smaller than the body portion; wherein the resilient structure expands over the prosthesis receptacle as the cover is withdrawn proximally over the shaft.
Claim 12
Dependent Claim
29 words
An expandable tip delivery catheter as claimed in claim 11, wherein the resilient structure comprises a braided expandable mesh tubing and an elastomeric material disposed over the mesh tubing.
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