US6019778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Delivery apparatus for a self-expanding stent
Assignee: Cordis US Corp
•
Filing: 1998-03-13
•
Granted: 2000-02-01
•
Expires: 2018-03-13
Abstract
Abstract In accordance with the present invention there is provided a delivery apparatus for a self-expanding stent. The apparatus includes an outer sheath, which is an elongated tubular member having distal and proximal ends. The outer sheath is made from an outer polymeric layer, an inner polymeric layer, and a braided reinforcing layer between the inner and outer layers. The reinforcing layer is more rigid than the inner and outer layers. The apparatus further includes an inner shaft located coaxially within the outer sheath. The shaft has a distal end, extending distal to the distal end of the sheath, and a proximal end, extending proximal to the proximal end of the sheath. The shaft further includes a stop attached thereto. The stop is proximal to the distal end of the sheath. Lastly, the apparatus includes a self-expanding stent located within the sheath. The stent makes frictional contact with the inner layer of the sheath. The stent is located between the stop and the distal end of the sheath, with a portion of the shaft disposed coaxially within a lumen of the stent. The stent makes contact with the stop during deployment of the stent.
Inventors
- 👤 David J. Wilson
- 👤 Kirk Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:08
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/95; A61F2/962; A61F2/966; A61F2/82; A61F2/86; A61F2/90; A61F2/91
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
185 words
A delivery apparatus for a self-expanding stent, said apparatus comprising: a) an outer sheath, comprising an elongated tubular member having distal and proximal ends, said outer sheath comprising an outer polymeric layer, and inner polymeric layer, and a wire reinforcing layer between said inner and outer layers, said reinforcing layer being more rigid than said inner and outer layers; b) an inner shaft located coaxially within said outer sheath, said shaft having a distal end, extending distal to said distal end of said sheath, and a proximal end, extending proximal to said proximal end of said sheath, said shaft further including a stop attached thereto, said stop being proximal to said distal end of said sheath; and c) a self-expanding superelastic nickel-titanium alloy stent located within said sheath, said stent making frictional contact with and exerting an outward force on said inner layer of said sheath, said stent located between said stop and said distal end of said sheath with a portion of said shaft disposed coaxially within a lumen of said stent, said stent makes contact with said stop during deployment of said stent.
Claim 2
Dependent Claim
185 words
A delivery apparatus for a self-expanding stent, said apparatus comprising: a) an outer sheath, comprising an elongated tubular member having distal and proximal ends, said outer sheath comprising an outer polymeric layer, and inner polymeric layer, and a wire reinforcing layer between said inner and outer layers, said reinforcing layer being more rigid than said inner and outer layers; b) an inner shaft located coaxially within said outer sheath, said shaft having a distal end, extending distal to said distal end of said sheath, and a proximal end, extending proximal to said proximal end of said sheath, said shaft further including a stop attached thereto, said stop being proximal to said distal end of said sheath; and c) a self-expanding superelastic nickel-titanium alloy stent located within said sheath, said stent making frictional contact with and exerting an outward force on said inner layer of said sheath, said stent located between said stop and said distal end of said sheath with a portion of said shaft disposed coaxially within a lumen of said stent, said stent makes contact with said stop during deployment of said stent.
Claim 3
Dependent Claim
15 words
The apparatus of claim 1 wherein said wire reinforcing layer comprises braids of metallic wire.
Claim 4
Dependent Claim
11 words
The apparatus of claim 2 wherein said wire comprises stainless steel.
Claim 5
Dependent Claim
14 words
The apparatus of claim 1 wherein said wire reinforcing layer comprises a metallic coil.
Claim 6
Dependent Claim
24 words
The apparatus of claim 1 wherein said braided reinforcing layer extends along a predetermined of length of a distal portion of said outer shaft.
Claim 7
Dependent Claim
17 words
The apparatus of claim 1 wherein said stop makes no substantial frictional contact with said outer sheath.
Claim 8
Dependent Claim
17 words
The apparatus of claim 1 wherein said shaft has a proximal portion made from a metallic material.
Claim 9
Dependent Claim
23 words
The apparatus of claim 7 wherein said proximal portion is made from material selected from a group comprising: stainless steel, nickel titanium alloys.
Claim 10
Dependent Claim
35 words
The apparatus of claim 1 wherein said shaft further includes a distal tip, said distal tip has a proximal end having an outer diameter which is not less than an outer diameter of said sheath.
Claim 11
Dependent Claim
14 words
The apparatus of claim 9 wherein said distal tip of said shaft is radiopaque.
Claim 12
Dependent Claim
10 words
The apparatus of claim 1 wherein said stop is radiopaque.
Claim 13
Dependent Claim
14 words
The apparatus of claim 11 wherein said distal end of said sheath is radiopaque.
Claim 14
Dependent Claim
23 words
The apparatus of claim 1 wherein said shaft has an increasing durometer along its length from its distal end to its proximal end.
Claim 15
Dependent Claim
25 words
The apparatus of claim 1 wherein said shaft further includes a reinforcing sleeve extending along a predetermined length of said shaft proximal to said stop.
Claim 16
Dependent Claim
187 words
A delivery apparatus for a self-expanding stent, said apparatus comprising: a) an outer sheath, comprising an elongated tubular member having distal and proximal ends, said outer sheath comprising an outer polymeric layer, and inner polymeric layer, and a braided metallic wire reinforcing layer between said inner and outer layers, said reinforcing layer being more rigid than said inner and outer layers; b) an inner shaft located coaxially within said outer sheath, said shaft having a distal end, extending distal to said distal end of said sheath, and a proximal end, extending proximal to said proximal end of said sheath, said shaft further including a stop attached thereto, said stop being proximal to said distal end of said sheath; and c) a self-expanding superelastic nickel-titanium alloy stent located within said sheath, said stent making frictional contact with and exerting an outward force on said inner layer of said sheath, said stent located between said stop and said distal end of said sheath with a portion of said shaft disposed coaxially within a lumen of said stent, said stent makes contact with said stop during deployment of said stent.
Claim 17
Dependent Claim
187 words
A delivery apparatus for a self-expanding stent, said apparatus comprising: a) an outer sheath, comprising an elongated tubular member having distal and proximal ends, said outer sheath comprising an outer polymeric layer, and inner polymeric layer, and a braided metallic wire reinforcing layer between said inner and outer layers, said reinforcing layer being more rigid than said inner and outer layers; b) an inner shaft located coaxially within said outer sheath, said shaft having a distal end, extending distal to said distal end of said sheath, and a proximal end, extending proximal to said proximal end of said sheath, said shaft further including a stop attached thereto, said stop being proximal to said distal end of said sheath; and c) a self-expanding superelastic nickel-titanium alloy stent located within said sheath, said stent making frictional contact with and exerting an outward force on said inner layer of said sheath, said stent located between said stop and said distal end of said sheath with a portion of said shaft disposed coaxially within a lumen of said stent, said stent makes contact with said stop during deployment of said stent.
Claim 18
Dependent Claim
15 words
The apparatus of claim 15 wherein said braided metallic wire reinforcing layer comprises stainless steel.
Claim 19
Dependent Claim
23 words
The apparatus of claim 15 wherein said braided reinforcing layer extends along a predetermined of length of a distal portion of said shaft.
Claim 20
Dependent Claim
17 words
The apparatus of claim 15 wherein said stop makes no substantial frictional contact with said outer sheath.
Claim 21
Dependent Claim
27 words
The apparatus of claim 15 wherein said shaft has a proximal portion made from a metallic material selected from a group comprising: stainless steel, nickel titanium alloys.
Claim 22
Dependent Claim
15 words
The apparatus of claim 15 wherein said stent is made from a superelastic nickel-titanium alloy.
Claim 23
Dependent Claim
15 words
The apparatus of claim 15 wherein said distal tip includes a radiopaque marker disposed thereon.
Claim 24
Dependent Claim
10 words
The apparatus of claim 15 wherein said stop is radiopaque.
Claim 25
Dependent Claim
18 words
The apparatus of claim 22 wherein said distal end of said sheath has a radiopaque marker disposed thereon.
Claim 26
Dependent Claim
23 words
The apparatus of claim 15 wherein said shaft has an increasing durometer along its length from its distal end to its proximal end.
Claim 27
Dependent Claim
25 words
The apparatus of claim 15 wherein said shaft further includes a reinforcing sleeve extending along a predetermined length of said shaft proximal to said stop.
Claim 28
Dependent Claim
251 words
A delivery apparatus for a self-expanding stent, said comprising: a) an outer sheath, comprising an elongated tubular member having distal and proximal ends, said outer sheath comprising an outer polymeric layer, and inner polymeric layer, and a braided metallic wire reinforcing layer between said inner and outer layers, said reinforcing layer being more rigid than said inner and outer layers, said sheath having a plurality of sections having increasing durometers from its distal end to its proximal end, said sheath having a radiopaque marker disposed at its distal end; b) an inner shaft located coaxially within said outer sheath, said shaft having a distal end, extending distal to said distal end of said sheath, and a proximal end, extending proximal to said proximal end of said sheath, said shaft having a radiopaque stop attached thereto, said stop being proximal to said distal end of said sheath, said shaft further including a distal tip, said distal tip having a proximal end having an outer diameter which is not less than an outer diameter of said sheath, said tip having a radiopaque marker disposed thereon; and c) a self-expanding superelastic nickel-titanium alloy located within said sheath, said stent making frictional contact with and exerting an outward force on said inner layer of said sheath, said stent located between said stop and said distal end of said sheath with a portion of said shaft disposed coaxially within a lumen of said stent, said stent makes contact with said stop during deployment of said stent.
Claim 29
Dependent Claim
251 words
A delivery apparatus for a self-expanding stent, said comprising: a) an outer sheath, comprising an elongated tubular member having distal and proximal ends, said outer sheath comprising an outer polymeric layer, and inner polymeric layer, and a braided metallic wire reinforcing layer between said inner and outer layers, said reinforcing layer being more rigid than said inner and outer layers, said sheath having a plurality of sections having increasing durometers from its distal end to its proximal end, said sheath having a radiopaque marker disposed at its distal end; b) an inner shaft located coaxially within said outer sheath, said shaft having a distal end, extending distal to said distal end of said sheath, and a proximal end, extending proximal to said proximal end of said sheath, said shaft having a radiopaque stop attached thereto, said stop being proximal to said distal end of said sheath, said shaft further including a distal tip, said distal tip having a proximal end having an outer diameter which is not less than an outer diameter of said sheath, said tip having a radiopaque marker disposed thereon; and c) a self-expanding superelastic nickel-titanium alloy located within said sheath, said stent making frictional contact with and exerting an outward force on said inner layer of said sheath, said stent located between said stop and said distal end of said sheath with a portion of said shaft disposed coaxially within a lumen of said stent, said stent makes contact with said stop during deployment of said stent.
Claim 30
Dependent Claim
15 words
The apparatus of claim 26 wherein said braided metallic wire reinforcing layer comprises stainless steel.
Claim 31
Dependent Claim
23 words
The apparatus of claim 26 wherein said braided reinforcing layer extends along a predetermined of length of a distal portion of said shaft.
Claim 32
Dependent Claim
17 words
The apparatus of claim 26 wherein said stop makes no substantial frictional contact with said outer sheath.
Claim 33
Dependent Claim
27 words
The apparatus of claim 26 wherein said shaft has a proximal portion made from a metallic material selected from a group comprising: stainless steel, nickel titanium alloys.
Claim 34
Dependent Claim
25 words
The apparatus of claim 26 wherein said shaft further includes a reinforcing sleeve extending along a predetermined length of said shaft proximal to said stop.
References Cited (Backward Citations)
US3585707A
Cited
US3485234A
Cited
US3612058A
Cited
US4516972A
Cited
US4954126A
Cited
US4954126B1
Cited
US4925445A
Cited
US4842590A
Cited
US4580568A
Cited
EP0177330B1
Cited
US4665771A
Cited
US4732152A
Cited
US4705511A
Cited
US4733665A
Cited
US4733665C2
Cited
US4733665B1
Cited
US4665918A
Cited
US4768507A
Cited
US4676229A
Cited
US4665905A
Cited
US4817613A
Cited
US5089005A
Cited
US5201901A
Cited
US4998539A
Cited
US4898591A
Cited
US5069674A
Cited
US4875468A
Cited
US5045072A
Cited
US5026377A
Cited
US5217440A
Cited
US5057092A
Cited
US5279596A
Cited
US5190520A
Cited
US5160341A
Cited
US5254107A
Cited
US5221270A
Cited
US5306252A
Cited
US5735893A
Cited
US5514154A
Cited
US5728158A
Cited
US5603721A
Cited
US5571170A
Cited
US5221372A
Cited
US5290295A
Cited
US5707376A
Cited
US5690644A
Cited
US5603698A
Cited
US5480423A
Cited
US5562641A
Cited
US5674208A
Cited
US5554139A
Cited
US5569295A
Cited
US5649952A
Cited
US5538510A
Cited
US5449373A
Cited
US5415664A
Cited
US5695499A
Cited
US5704926A
Cited
US5591197A
Cited
WO1996032078A1
Cited
US5534007A
Cited
US5700269A
Cited
US5702418A
Cited
US5697971A
Cited
US5776140A
Cited
US5755781A
Cited
US5735859A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-01-31 | 2003-08-02 | 2004-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-01-31 | 2007-08-02 | 2008-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-01-31 | 2011-08-02 | 2012-02-01 | $7700.00 | Window Closed / Lapsed |