US5746764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stent compression instrument
Assignee: Cordis Corp
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Filing: 1996-11-12
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Granted: 1998-05-05
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Expires: 2016-11-12
Abstract
Abstract In accordance with the present invention, a fluid compression instrument and method for particular use in pre-surgically securing and conforming a vascular stent upon an angioplasty balloon, includes a housing for containing pressurized fluid and an elastic enclosing diaphragm secured within the housing and having an internal cavity and opening arranged to receive the stent disposed on the balloon catheter for secured compression. A pressure chamber is arranged within the housing as an envelope about the diaphragm to enable pressurized fluid forces within the pressure chamber to be imposed upon the outer surface of the diaphragm and transmitted through the diaphragm enabling circumferential application against the inserted stent in order uniformly to compress the stent with correspondingly secured purchase against the deflated balloon surface, producing complete adhesion of the stent thereon. The subsequent balloon inflation angioplasty and stent expansion is not impaired since the balloon remains in its deflated shape with the compressed stent closely conforming in contour throughout the balloon's 360° periphery. The entire stent mesh is uniformly compressed down including the open stent ends which prevents the many tiny stent mesh edges from protruding out and effectively prevents both vascular abrasion as well as shifting of the stent on the deflated balloon during the angioplasty insertion procedure.
Inventors
- 👤 Nicholas A. Green
- 👤 Fred E. Williams, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:10
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/95; A61F2/958; A61F2/9522
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
131 words
A fluid compression instrument for particular use in pre-surgically conforming and securing a vascular stent upon an angioplasty balloon comprising: a) a housing for containing a pressurized medium; b) an elastic enclosing diaphragm having an internal cavity and opening therein and arranged to receive a vascular stent and an angioplasty balloon inserted within said internal cavity, said elastic enclosing diaphragm being mounted within said housing; and c) pressure chamber structure provided by said housing and arranged as an envelope about said elastic enclosing diaphragm for enabling containment of pressurized forces imposed upon an outer surface of said elastic enclosing diaphragm to be transmitted through said elastic enclosing diaphragm and circumferentially applied against the inserted vascular stent in order uniformly to compress the vascular stent into secured purchase against the angioplasty balloon.
Claim 2
Dependent Claim
131 words
A fluid compression instrument for particular use in pre-surgically conforming and securing a vascular stent upon an angioplasty balloon comprising: a) a housing for containing a pressurized medium; b) an elastic enclosing diaphragm having an internal cavity and opening therein and arranged to receive a vascular stent and an angioplasty balloon inserted within said internal cavity, said elastic enclosing diaphragm being mounted within said housing; and c) pressure chamber structure provided by said housing and arranged as an envelope about said elastic enclosing diaphragm for enabling containment of pressurized forces imposed upon an outer surface of said elastic enclosing diaphragm to be transmitted through said elastic enclosing diaphragm and circumferentially applied against the inserted vascular stent in order uniformly to compress the vascular stent into secured purchase against the angioplasty balloon.
Claim 3
Dependent Claim
24 words
An instrument according to claim 1, wherein said elastic enclosing diaphragm comprises a tubular configuration defining a lumen therein which defines said internal cavity.
Claim 4
Dependent Claim
22 words
An instrument according to claim 2, wherein said pressure chamber structure is annular and is arranged circumferential to said tubular diaphragm configuration.
Claim 5
Dependent Claim
27 words
An instrument according to claim 3, wherein said annular pressure chamber structure is formed radially between said tubular diaphragm configuration and a surrounding wall of said housing.
Claim 6
Dependent Claim
23 words
An instrument according to claim 4, wherein said tubular diaphragm configuration comprises opposite end portions defining adjacent ends of said pressure chamber structure.
Claim 7
Dependent Claim
23 words
An instrument according to claim 5, wherein at least one of said tubular diaphragm end portions is sealed against said surrounding housing wall.
Claim 8
Dependent Claim
26 words
An instrument according to claim 6, further comprising a seal member respectively sealing said respective tubular diaphragm end portion against a respective surrounding housing wall portion.
Claim 9
Dependent Claim
35 words
An instrument according to claim 7, wherein said seal member comprises a through passageway communicating with said diaphragm lumen to enable access passage of the vascular stent therethrough into said housing and said diaphragm lumen.
Claim 10
Dependent Claim
55 words
An instrument according to claim 7, further including a second seal member associated with the opposite tubular diaphragm end portion and a respective surrounding housing wall portion, said second seal member comprising a through access passageway communicating with said diaphragm lumen for insertion of the vascular stent therethrough into said housing and said diaphragm lumen.
Claim 11
Dependent Claim
26 words
An instrument according to claim 7, further comprising a clamp member clamping said diaphragm end portion against said surrounding housing wall to define said seal member.
Claim 12
Dependent Claim
20 words
An instrument according to claim 10, wherein said clamp member is at least partially inserted within said diaphragm end portion.
Claim 13
Dependent Claim
23 words
An instrument according to claim 10, said clamp member comprises an integral closure portion closing an opening in said respective diaphragm end portion.
Claim 14
Dependent Claim
24 words
An instrument according to claim 12, wherein said closure portion is at least partially inserted to plug said opening of said diaphragm end portion.
Claim 15
Dependent Claim
91 words
An instrument according to claim 5, further comprising a sealing element at least partially projecting into one of said tubular diaphragm end portions, and a fluid conduit through said surrounding housing wall communicating with said pressure chamber structure for supply and evacuation therethrough of pressurization fluid flow, wherein said inserted portion of said sealing member extends transversely across an opening of said fluid conduit in order to support said diaphragm end portion and prevent deflection thereof into said fluid conduit opening during evacuation fluid flow from said pressure chamber structure therethrough.
Claim 16
Dependent Claim
31 words
An instrument according to claim 4, further comprising a fluid conduit formed through said surrounding housing wall and communicating with said pressure chamber structure for pressurizing and evacuating fluid flow therethrough.
Claim 17
Dependent Claim
36 words
An instrument according to claim 1, further comprising a clamp member movably mounted within said housing and engageable with a seal member, in order to compress said seal member into sealed engagement with an inserted component.
Claim 18
Dependent Claim
19 words
An instrument according to claim 16, wherein said seal member is an integral portion of said elastic enclosing diaphragm.
Claim 19
Dependent Claim
75 words
An instrument according to claim 17, wherein said seal member of said diaphragm has a tubular configuration defining a lumen therein, arranged so that said compression by said movement of said clamp member induces radially squeezed contraction of said lumen and secured grasp of a catheter inserted through said lumen by compression of said sealing member, in order to support said catheter during highly pressurized compression of the vascular stent by said elastic enclosing diaphragm.
Claim 20
Dependent Claim
41 words
An instrument according to claim 18, further comprising a cap member rotatably mounted on said housing and threaded to a threaded drive portion of said clamp member to enable said movement of said clamp member by rotation of said cap member.
Claim 21
Dependent Claim
28 words
An instrument according to claim 16, wherein said clamp member further comprises a through passageway to enable insertable access therethrough of the vascular stent and the angioplasty balloon.
Claim 22
Dependent Claim
17 words
An instrument according to claim 1, further including a pressurization device for pressurization of said pressurized medium.
Claim 23
Dependent Claim
17 words
An instrument according to claim 4, further comprising a venting recess formed into said surrounding housing wall.
References Cited (Backward Citations)
US5484449A
Cited
US5378237A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-05-04 | 2001-11-03 | 2002-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-05-04 | 2005-11-03 | 2006-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-05-04 | 2009-11-03 | 2010-05-05 | $7700.00 | Window Closed / Lapsed |