US5411549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selectively expandable, retractable and removable stent
Assignee: Boston Scientific Scimed Inc
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Filing: 1993-07-13
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Granted: 1995-05-02
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Expires: 2013-07-13
Abstract
Abstract An improved stent apparatus for intraluminal use in the body of an animal. The apparatus is of resilient material disposed in a tubular configuration about a central axis, which carries ratchet apparatus in the form of catch and latch apparatus having a selectively removable latch. The stent is expanded through the use of an angioplasty balloon to any selected one of a plurality of dilated positions. As the stent expands, the catches come into contact with the latch to prevent retraction of the stent apparatus. The latch communicates with a point external to the lumen, and is selectively removable from contact with the catches to enable the stent apparatus to return to its original diameter.
Inventors
- 👤 Jeffrey J. Peters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:24
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/92; A61F2/93
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
119 words
Stent apparatus comprising: a. a resilient member disposed in a generally tubular, coiled manner about a transverse axis, having a minimum diameter when in a relaxed coiled position and being selectively expandable to one or more increasingly greater diameters; b. said member having a first side and a second side; and, c. movable latch device on said first side that is movable relates to the resilient member and a detent device on said second side, such that expansion of said resilient member from said relaxed coiled position causes said detent device and said movable latch device to make contact to hold said member in an expanded position, and movement of said latch device causes release of the detent device.
Claim 2
Dependent Claim
119 words
Stent apparatus comprising: a. a resilient member disposed in a generally tubular, coiled manner about a transverse axis, having a minimum diameter when in a relaxed coiled position and being selectively expandable to one or more increasingly greater diameters; b. said member having a first side and a second side; and, c. movable latch device on said first side that is movable relates to the resilient member and a detent device on said second side, such that expansion of said resilient member from said relaxed coiled position causes said detent device and said movable latch device to make contact to hold said member in an expanded position, and movement of said latch device causes release of the detent device.
Claim 3
Dependent Claim
40 words
The apparatus of claim 1 including a latch mounting device for removably mounting said movable latch device on said first side such that removal of said movable latch device causes said resilient member to retract to said relaxed coiled position.
Claim 4
Dependent Claim
26 words
The apparatus of claim 2 in which said detent device comprises at least one row of two or more catches aligned parallel to said transverse axis.
Claim 5
Dependent Claim
43 words
The apparatus of claim 3 including a plurality of said rows of two or more catches, each of said rows being parallel to said transverse axis and to one another and said catches being aligned to form parallel columns to said second side.
Claim 6
Dependent Claim
50 words
The apparatus of claim 4 in which said latch mounting device comprises a plurality of tubular members mounted on said first side in spaced relation and along a central axis parallel to said transverse axis, and said movable latch device comprises a latch bar slidably mounted in said tubular members.
Claim 7
Dependent Claim
67 words
The apparatus of claim 2, 3, or 4 including a retraction device connected to said resilient member for moving and removing said member after it has been placed in a body, said retraction device comprising an elongated tubular element for extending from a body after said member has been placed in the body, and said tubular element comprising at least a portion of said latch mounting device.
Claim 8
Dependent Claim
50 words
The apparatus of claim 2 in which said latch mounting device comprises a plurality of tubular members mounted on said first side in spaced relation and along a central axis parallel to said transverse axis, and said movable latch device comprises a latch bar slidably mounted in said tubular members.
Claim 9
Dependent Claim
50 words
The apparatus of claim 3 in which said latch mounting device comprises a plurality of tubular members mounted on said first side in spaced relation and along a central axis parallel to said transverse axis, and said movable latch device comprises a latch bar slidably mounted in said tubular members.
Claim 10
Dependent Claim
26 words
The apparatus of claim 1 in which said detent device comprises at least one row of two or more catches aligned parallel to said transverse axis.
Claim 11
Dependent Claim
43 words
The apparatus of claim 9 including a plurality of said rows of two or more catches, each of said rows being parallel to said transverse axis and to one another and said catches being aligned to form parallel columns on said second side.
Claim 12
Dependent Claim
84 words
The apparatus of claim 10 including a latch mounting device for removably mounting said movable latch device on said first side such that removal of said movable latch device causes said resilient member to retract to said relaxed coiled position, wherein said latch mounting device comprises a plurality of tubular members mounted on said first side in spaced relation and along a central axis parallel to said transverse axis, and said movable latch device comprises a latch bar slidably mounted in said tubular members.
Claim 13
Dependent Claim
34 words
The apparatus of claim 1, 2, 9, 3, 11 or 4 including a retraction device connected to said resilient member for moving and removing said member after it has been placed in a body.
Claim 14
Dependent Claim
55 words
The apparatus of claim 1, 2, 9, 3, 11 or 4 including a retraction device connected to said resilient member for moving and removing said member after it has been placed in a body, said retraction device comprising an elongated element for extending from a body after said member has been placed in the body.
Claim 15
Dependent Claim
84 words
The apparatus in claim 9 including a latch mounting device for removably mounting said movable latch device on said first side such that removal of said movable latch device causes said resilient member to retract to said relaxed coiled position, wherein said latch mounting device comprises a plurality of tubular members mounted on said first side in spaced relation and along a central axis parallel to said transverse axis, and said movable latch device comprises a latch bar slidably mounted in said tubular member.
Claim 16
Dependent Claim
31 words
The apparatus of claim 7, 14, 8, 11 or 5 in which said space or spaces between said tubular members align with a respective column or columns formed by said catches.
Claim 17
Dependent Claim
70 words
The apparatus of claim 7, 14, 8, 11 or 5 in which said stent apparatus comprises an interluminal stent, at least one of said tubular members extends beyond said first side of said resilient member to a point which is intended to be external to a lumen when the resilient member is disposed within the lumen, and said latch bar is slidably mounted within and through said extended tubular member.
Claim 18
Dependent Claim
28 words
The apparatus of claim 9, 3, 10, 4, 14, 8, 11 or 5 in which each of said catches is formed from the body of said resilient member.
Claim 19
Dependent Claim
72 words
The apparatus of claim 7, 8, 9, 10 or 11 including a retraction device connected to said resilient member for moving and removing said member after it has been placed in a body, said retraction device comprising an elongated tubular element for extending from a body after said member has been placed in the body, and said tubular element comprising one of said plurality of tubular members of said latch mounting device.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-05-01 | 1998-10-31 | 1999-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-05-01 | 2002-10-31 | 2003-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-05-01 | 2006-10-31 | 2007-05-02 | $7700.00 | Window Closed / Lapsed |