US5690643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stent delivery system
Assignee: Angiodynamics Inc
•
Filing: 1996-02-20
•
Granted: 1997-11-25
•
Expires: 2016-02-20
Abstract
Abstract A stent delivery apparatus is disclosed comprising a movable inner tube and a fixed outer tube having corrugations or undulations at its distal end. The undulations or corrugations are stretched by movement of the inner tube, whereupon the stent is placed over the relatively flattened undulations or corrugations. A solid structure or an open structure such as a coil can be used for this purpose. One large proximal undulation is provided for preventing the stent from sliding from the predetermined location during the setting. Upon relative movement between the inner and outer tubes, which can be a single longitudinal or twisting movement or a combination of such movements, the undulations under the stent are outwardly relaxed, forcing the stent to expand toward the vascular wall. The relative movement is then reversed to retract the undulations and the delivery device withdrawn. In an alternative embodiment, the undulations are perforated to allow perfusion under and through the stent from a point external to the patient's body to a point distal of the placement of the stent during the procedure of stent expansion.
Inventors
- 👤 Bandula Wijay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:33
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/95
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
93 words
A stent delivery system, comprising: an inner elongated member; an outer elongated member mounted over and movable with respect to said inner elongated member; a flexible member connected to said inner elongated member and said outer elongated member; a stent overlying said flexible member; said flexible member movable from a first contracted position, where said flexible member longitudinally retains said stent with respect to said elongated members for insertion, to a second expanded position, where said stent is expanded for fixation, by virtue of relative movement between said inner and outer elongated members.
Claim 2
Dependent Claim
93 words
A stent delivery system, comprising: an inner elongated member; an outer elongated member mounted over and movable with respect to said inner elongated member; a flexible member connected to said inner elongated member and said outer elongated member; a stent overlying said flexible member; said flexible member movable from a first contracted position, where said flexible member longitudinally retains said stent with respect to said elongated members for insertion, to a second expanded position, where said stent is expanded for fixation, by virtue of relative movement between said inner and outer elongated members.
Claim 3
Dependent Claim
11 words
The system of claim 1, wherein: said relative movement is longitudinal.
Claim 4
Dependent Claim
27 words
The system of claim 2, wherein: said outer elongated member is reinforced for column strength against a compressive applied force which results from said relative longitudinal movement.
Claim 5
Dependent Claim
26 words
The system of claim 3, wherein: said reinforcement comprises a wound spring extending for at least a portion of the length of said outer elongated member.
Claim 6
Dependent Claim
21 words
The system of claim 2, wherein: said inner elongated member has a tubular structure to facilitate passing it over a guidewire.
Claim 7
Dependent Claim
33 words
The system of claim 2, wherein: said flexible member has at least one opening thereon to permit perfusion of fluids therethrough adjacent said stent while it is being expanded by said flexible member.
Claim 8
Dependent Claim
37 words
The system of claim 6, wherein: said inner and outer elongated members forming an annulus therebetween which is in flow communication with said opening in said flexible member for allowing perfusion during expansion of said flexible member.
Claim 9
Dependent Claim
58 words
The system of claim 7, wherein: said flexible member comprises a generally tubular structure with an undulating wall further comprising at least two reverse bends; said contracted position defined by a small profile of said reverse bends and said expanded position defined by at least one of said reverse bends moving radially away from another said reverse bends.
Claim 10
Dependent Claim
11 words
The system of claim 1, wherein: said relative movement is rotational.
Claim 11
Dependent Claim
18 words
The system of claim 1, wherein: said relative movement occurs by a combination of longitudinal and rotational movement.
Claim 12
Dependent Claim
33 words
The system of claim 1, wherein: said flexible member has at least one opening thereon to permit perfusion of fluids therethrough adjacent said stent while it is being expanded by said flexible member.
Claim 13
Dependent Claim
37 words
The system of claim 11, wherein: said inner and outer elongated members forming an annulus therebetween which is in flow communication with said opening in said flexible member for allowing perfusion during expansion of said flexible member.
Claim 14
Dependent Claim
58 words
The system of claim 1, wherein: said flexible member comprises a generally tubular structure with an undulating wall further comprising at least two reverse bends; said contracted position defined by a small profile of said reverse bends and said expanded position defined by at least one of said reverse bends moving radially away from another said reverse bends.
Claim 15
Dependent Claim
36 words
The system of claim 1, wherein: said flexible member comprises a coil; said contracted position defined by a relative rotation between said inner and outer members which results in a small profile for said flexible member.
Claim 16
Dependent Claim
36 words
The system of claim 14, wherein: said expanded position is defined by a larger profile for said flexible member which results from relaxation of said coil from relative rotation of said inner and said outer members.
Claim 17
Dependent Claim
149 words
A stent delivery system, comprising: an inner elongated member; an outer elongated member mounted over and movable with respect to said inner elongated member; a flexible member connected to said inner elongated member and said outer elongated member; a stent mounted to said flexible member; said flexible member movable from a first contracted position, where said flexible member longitudinally retains said stent with respect to said elongated members for insertion, to a second expanded position, where the stent is expanded for fixation, by virtue of relative movement between said inner and outer elongated members; said flexible member comprising a generally tubular structure with an undulating wall; and said undulating wall further comprises an undulation which has a larger profile than said other undulations which comprise said wall, in both the contracted and expanded positions of said wall, to reduce longitudinal shifting of the stent as said wall is expanded.
Claim 18
Dependent Claim
149 words
A stent delivery system, comprising: an inner elongated member; an outer elongated member mounted over and movable with respect to said inner elongated member; a flexible member connected to said inner elongated member and said outer elongated member; a stent mounted to said flexible member; said flexible member movable from a first contracted position, where said flexible member longitudinally retains said stent with respect to said elongated members for insertion, to a second expanded position, where the stent is expanded for fixation, by virtue of relative movement between said inner and outer elongated members; said flexible member comprising a generally tubular structure with an undulating wall; and said undulating wall further comprises an undulation which has a larger profile than said other undulations which comprise said wall, in both the contracted and expanded positions of said wall, to reduce longitudinal shifting of the stent as said wall is expanded.
Claim 19
Dependent Claim
130 words
A stent delivery system, comprising: an inner elongated member; an outer elongated member mounted over and movable with respect to said inner elongated member; a flexible member connected to said inner elongated member and said outer elongated member; a stent mounted to said flexible member; said flexible member movable from a first contracted position, where it supports the stent for insertion, to a second expanded position, where the stent is expanded for fixation, by virtue of relative movement between said inner and outer elongated members; said flexible member comprises a coil; and said coil comprises at least one turn which has a larger profile than the remaining turns of said coil in its said contracted and expanded positions, to reduce longitudinal shifting of the stent as said coil is expanded.
Claim 20
Dependent Claim
130 words
A stent delivery system, comprising: an inner elongated member; an outer elongated member mounted over and movable with respect to said inner elongated member; a flexible member connected to said inner elongated member and said outer elongated member; a stent mounted to said flexible member; said flexible member movable from a first contracted position, where it supports the stent for insertion, to a second expanded position, where the stent is expanded for fixation, by virtue of relative movement between said inner and outer elongated members; said flexible member comprises a coil; and said coil comprises at least one turn which has a larger profile than the remaining turns of said coil in its said contracted and expanded positions, to reduce longitudinal shifting of the stent as said coil is expanded.
Claim 21
Dependent Claim
233 words
A stent delivery system, comprising: an inner elongated member; an outer elongated member mounted over and movable with respect to said inner elongated member; a flexible member connected to said inner elongated member and said outer elongated member; a stent mounted to said flexible member; said flexible member movable from a first contracted position, where it supports the stent for insertion, to a second expanded position, where the stent is expanded for fixation, by virtue of relative movement between said inner and outer elongated members; said relative movement is longitudinal; said flexible member has at least one opening thereon to permit perfusion of fluids therethrough adjacent the stent while it is being expanded by said flexible member; said inner and outer elongated members forming an annulus therebetween which is in flow communication with said opening in said flexible member for allowing perfusion during expansion of said flexible member; said flexible member comprises a generally tubular structure with an undulating wall; said contracted position defined by a small profile of said undulating wall; said expanded position results from allowing the profile of said undulating wall to increase to expand the stent; and said undulating wall further comprises an undulation which has a larger profile than said other undulations which comprise said wall, in both the contracted and expanded positions of said wall, to reduce longitudinal shifting of the stent as said wall is expanded.
Claim 22
Dependent Claim
233 words
A stent delivery system, comprising: an inner elongated member; an outer elongated member mounted over and movable with respect to said inner elongated member; a flexible member connected to said inner elongated member and said outer elongated member; a stent mounted to said flexible member; said flexible member movable from a first contracted position, where it supports the stent for insertion, to a second expanded position, where the stent is expanded for fixation, by virtue of relative movement between said inner and outer elongated members; said relative movement is longitudinal; said flexible member has at least one opening thereon to permit perfusion of fluids therethrough adjacent the stent while it is being expanded by said flexible member; said inner and outer elongated members forming an annulus therebetween which is in flow communication with said opening in said flexible member for allowing perfusion during expansion of said flexible member; said flexible member comprises a generally tubular structure with an undulating wall; said contracted position defined by a small profile of said undulating wall; said expanded position results from allowing the profile of said undulating wall to increase to expand the stent; and said undulating wall further comprises an undulation which has a larger profile than said other undulations which comprise said wall, in both the contracted and expanded positions of said wall, to reduce longitudinal shifting of the stent as said wall is expanded.
Claim 23
Dependent Claim
27 words
The system of claim 18, wherein: said outer elongated member is reinforced for column strength against a compressive applied force which results from said relative longitudinal movement.
Claim 24
Dependent Claim
26 words
The system of claim 19, wherein: said reinforcement comprises a wound spring extending for at least a portion of the length of said outer elongated member.
Claim 25
Dependent Claim
21 words
The system of claim 20, wherein: said inner elongated member has a tubular structure to facilitate passing it over a guidewire.
Claim 26
Dependent Claim
113 words
A stent delivery system, comprising: an inner elongated member; an outer elongated member mounted over and movable with respect to said inner elongated member; a flexible member connected to said inner elongated member and said outer elongated member; said flexible member movable from a first contracted position, where it supports the stent for insertion, to a second expanded position, where the stent is expanded for fixation, by virtue of relative movement between said inner and outer elongated members; and said flexible member comprising a travel stop to resist longitudinal movement of said stent by abutting said stent as said flexible member is moved from its said first position to its said second position.
Claim 27
Dependent Claim
113 words
A stent delivery system, comprising: an inner elongated member; an outer elongated member mounted over and movable with respect to said inner elongated member; a flexible member connected to said inner elongated member and said outer elongated member; said flexible member movable from a first contracted position, where it supports the stent for insertion, to a second expanded position, where the stent is expanded for fixation, by virtue of relative movement between said inner and outer elongated members; and said flexible member comprising a travel stop to resist longitudinal movement of said stent by abutting said stent as said flexible member is moved from its said first position to its said second position.
Claim 28
Dependent Claim
131 words
A stent delivery system, comprising: an inner elongated member; an outer elongated member mounted over and movable with respect to said inner elongated member; a flexible member connected to said inner elongated member and said outer elongated member; said flexible member movable from a first contracted position, where it supports the stent for insertion, to a second expanded position, where the stent is expanded for fixation, by virtue of relative movement between said inner and outer elongated members; said flexible member comprises a generally tubular structure with an undulating wall further comprising at least two reverse bends; and said contracted position defined by a small profile of said reverse bends and said expanded position defined by at least one of said reverse bends moving radially away from another said reverse bend.
Claim 29
Dependent Claim
131 words
A stent delivery system, comprising: an inner elongated member; an outer elongated member mounted over and movable with respect to said inner elongated member; a flexible member connected to said inner elongated member and said outer elongated member; said flexible member movable from a first contracted position, where it supports the stent for insertion, to a second expanded position, where the stent is expanded for fixation, by virtue of relative movement between said inner and outer elongated members; said flexible member comprises a generally tubular structure with an undulating wall further comprising at least two reverse bends; and said contracted position defined by a small profile of said reverse bends and said expanded position defined by at least one of said reverse bends moving radially away from another said reverse bend.
References Cited (Backward Citations)
US2701559A
Cited
US3889685A
Cited
US3882845A
Cited
US4018230A
Cited
US4183102A
Cited
US4483340A
Cited
US4503569A
Cited
EP0183372A1
Cited
US4732152A
Cited
US4776337A
Cited
US4776337B1
Cited
USRE34037E
Cited
US4740207A
Cited
US4964853A
Cited
US4795458A
Cited
US4886062A
Cited
US4990151A
Cited
US4913141A
Cited
US4950227A
Cited
US5443500A
Cited
US5163958A
Cited
US5100429A
Cited
US5074871A
Cited
US5108416A
Cited
US5158548A
Cited
US5163952A
Cited
US5282824A
Cited
US5160341A
Cited
US5163951A
Cited
US5135536A
Cited
US5197978B1
Cited
US5197978A
Cited
US5423885A
Cited
US5439445A
Cited
US5354310A
Cited
US5415637A
Cited
EP0621017A1
Cited
US5456667A
Cited
US5480423A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-11-24 | 2001-05-26 | 2001-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-11-24 | 2005-05-26 | 2005-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-11-24 | 2009-05-26 | 2009-11-25 | $7700.00 | Window Closed / Lapsed |