Patent US4994018A successfully refreshed from Google Patents.
US4994018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intra-aortic balloon assembly
Assignee: Datascope Investment Corp
•
Filing: 1989-05-31
•
Granted: 1991-02-19
•
Expires: 2009-05-31
Abstract
Abstract A dual tubular member intra-aortic balloon assembly (1) has an inflatable balloon (4) bonded, at its proximal end, to an outer tubular member (2), and at its distal end, to an inner tubular member (3). The inner tubular member is composed of metal, being axially rigid yet bendable along its length. A flexible forwardly projecting extension (12) is attached to the inner tubular member for guiding the relatively stiff balloon assembly over a guide wire (9) through a tortuous arterial path, without causing buckling or misplacement of the guide wire. The junction between the inner tubular member and the flexible tubular member extension is embedded within a flexible tip (10) which reinforces the juncture to prevent balloon failure due to bending stress at the same time, enables a tighter balloon wrapping by eliminating the enlarged junction of the inner tubular member and flexible tip within the balloon membrane.
Inventors
- 👤 Lawrence Saper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:17
CPC Classifications
A; A61; A61M; A61M60/00; A61M60/80; A61M60/841; A61M60/843; A61M60/10; A61M60/122; A61M60/126; A61M60/135; A61M60/139; A61M60/20; A61M60/295; A61M60/247; A61M60/253; A61M60/268; A61M60/274; A61M60/855; A61M60/865
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
133 words
A dual tubular member intra-aortic balloon assembly for insertion into a vessel comprising: an outer tubular member; an inner tubular member having a distal end coaxial with the outer tubular member; a balloon membrane having a proximal end attached to a distal end of the outer tubular member, and a distal end attached to the inner tubular member, the inner tubular member being axially rigid but bendable for at least that portion within the balloon membrane; a flexible inner tubular member extension attached to the inner tubular member distal end and extending forwardly in an amount sufficient for guiding the intra-aortic balloon assembly through the vessel; a tip disposed at said distal end of the balloon membrane, the junction of the inner tubular member and the flexible inner tubular member extension embedded therein.
Claim 2
Dependent Claim
133 words
A dual tubular member intra-aortic balloon assembly for insertion into a vessel comprising: an outer tubular member; an inner tubular member having a distal end coaxial with the outer tubular member; a balloon membrane having a proximal end attached to a distal end of the outer tubular member, and a distal end attached to the inner tubular member, the inner tubular member being axially rigid but bendable for at least that portion within the balloon membrane; a flexible inner tubular member extension attached to the inner tubular member distal end and extending forwardly in an amount sufficient for guiding the intra-aortic balloon assembly through the vessel; a tip disposed at said distal end of the balloon membrane, the junction of the inner tubular member and the flexible inner tubular member extension embedded therein.
Claim 3
Dependent Claim
20 words
The intra-aortic balloon assembly of claim 1 wherein the tip and flexible inner tubular member extension are of unitary construction.
Claim 4
Dependent Claim
12 words
The intra-aortic balloon assembly of claim 1 wherein said tip is flexible.
Claim 5
Dependent Claim
27 words
The intra-aortic balloon assembly of claim 1 wherein the flexible tubular member extension extends from about 0.5 to 8 cm from a distal end of the tip.
Claim 6
Dependent Claim
27 words
The intra-aortic balloon assembly of claim 4 wherein the flexible tubular member extension extends from about 2 to 6 cm from the distal end of the tip.
Claim 7
Dependent Claim
18 words
The intra-aortic balloon assembly of claim 1 wherein a distal end of the tip has a rounded shape.
Claim 8
Dependent Claim
20 words
The intra-aortic balloon assembly of claim 1 wherein the tip is tapered from a distal end to a proximal end.
Claim 9
Dependent Claim
16 words
The intra-aortic balloon assembly of claim 1 wherein said inner tubular member is made of metal.
References Cited (Backward Citations)
US4290428A
Cited
US4413989A
Cited
US4362150A
Cited
US4467790A
Cited
US4531512A
Cited
US4545390A
Cited
US4540404A
Cited
US4616652A
Cited
US4664113A
Cited
WO1986000010A1
Cited
US4616653A
Cited
US4641654A
Cited
US4739768A
Cited
US4739768B1
Cited
US4739768B2
Cited
US4723936A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-02-18 | 1994-08-20 | 1995-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-02-18 | 1998-08-20 | 1999-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-02-18 | 2002-08-20 | 2003-02-19 | $7700.00 | Window Closed / Lapsed |