EP0943302A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
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
2026-10-23 13:28
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; A61F2/9522; A61F2/954; A61F2/962; A61F2/97; A61F2/0095; A61F2/848; A61F2/89; A61F2/9517; 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: 16
Claim 1
Independent Claim
83 words
A delivery catheter for positioning a resilient, tubular, radially
compressible endoluminal prosthesis having a proximal end and a distal end, said
catheter comprising: an elongate flexible shaft having a proximal end and a distal end; a retaining structure attached near the distal end of the shaft for releasably
holding the axial position of the prosthesis on the shaft; and a sheath slidably received over the shaft to cover the prosthesis while said
prosthesis is axially held on the shaft by the retaining structure.
Claim 2
Dependent Claim
43 words
The delivery catheter of claim 1, wherein the retaining structure is
disposable between the prosthesis and the sheath so that the retaining structure
extends axially over the prosthesis from its proximal end to its distal end while the
sheath covers the retaining structure.
Claim 3
Dependent Claim
51 words
The catheter of claim 1 or 2, wherein the retaining structure comprises a
cover which is detachably secured over at least a portion of the radially
compressible prosthesis and means operable from the proximal end of the flexible
shaft for detaching the cover from over the prosthesis to release said prosthesis.
Claim 4
Dependent Claim
21 words
The catheter of claim 3, wherein the retaining structure comprises a
distal cover located at the distal end of the catheter.
Claim 5
Dependent Claim
77 words
The catheter of claim 3 or 4, wherein the cover is a cylinder and the
detaching means is a mechanism consisting of a cord for splitting the cylinder
along at least one axial or spiral line by drawing proximally on the cord or
consisting of an axially translatable end cap which captures a plurality of resilient,
radially outwardly flared axial elements of the cylinder or consisting of means for
axially separating two halves of the cylinder cover.
Claim 6
Dependent Claim
71 words
The catheter of anyone of the claims 1 to 5, wherein the shaft has a
coupling mechanism spaced proximally of the distal end and the sheath has a
coupling mechanism proximally of a distal end of the sheath, whereby a distal end
of the catheter including the distal end of the shaft and the distal end of the sheath
are detachable and alternative distal ends of the catheter may be attached.
Claim 7
Dependent Claim
64 words
The catheter of anyone of the claims 1 to 6, wherein the retaining
structure comprises at least one locking stay extending radially from the shaft so
as to extend through the aperture of the prosthesis and hold the prosthesis axially
in place relative to the shaft as the sheath is axially translated relative to the shaft
and a portion of the prosthesis expands resiliently.
Claim 8
Dependent Claim
30 words
The catheter of claim 7, wherein the locking stay is disposed over the
shaft and extends radially outward by a distance sufficient to engage an interior
surface of the sheath.
Claim 9
Dependent Claim
23 words
The catheter of claim 7 or 8, wherein the retaining structure comprises at
least two circumferentially spaced-apart locking stays disposed over the shaft.
Claim 10
Dependent Claim
36 words
The catheter of anyone of the claims 1 to 9, wherein the retaining
structure extends distally between the prosthesis and the sheath beyond the distal
end of the prosthesis while the sheath covers the retaining structure.
Claim 11
Dependent Claim
23 words
The catheter of claim 10, wherein the prosthesis is axially anchored by
the retaining structure and is radially compressed by the sheath itself.
Claim 12
Dependent Claim
18 words
The catheter of claim 10, wherein the prosthesis is axially anchored and
radially compressed by the retaining structure.
Claim 13
Dependent Claim
24 words
The catheter of anyone of the claims 1 to 12, wherein the retaining
structure comprises a plurality of resilient, radially outwardly flarable axial
elements.
Claim 14
Dependent Claim
23 words
The catheter of anyone of the claims 1 to 13, wherein the cover
comprises a plurality of resilient, radially outwardly flarable axial elements.
Claim 15
Dependent Claim
39 words
A delivery catheter for use with a prosthesis cartridge including a shaft
extension having a distal end and a proximal end and a sheath extension slidably
received over the shaft, according to anyone of the claims 1 to 14.
Claim 16
Dependent Claim
94 words
A delivery system comprising a resilient, radially compressible
endoluminal prosthesis; an elongate flexible shaft having a proximal and a distal
end; a sheath slidably received over the shaft and a prosthesis to radially restrain
the prosthesis; a plurality of resilient, radially outwardly flarable axial elements
attached near the distal end of the shaft and extending distally over the prosthesis
and within the sheath, resilient expansion of the prosthesis against the axial
elements releasably holding the axial position of the entire prosthesis relative to
the shaft when the sheath slides relative to the axial elements.
References Cited (Backward Citations)
No citation records indexed.
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