Patent US5098412A successfully refreshed from Google Patents.
US5098412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Support system for catheter
Assignee: Individual
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Filing: 1990-11-01
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Granted: 1992-03-24
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Expires: 2010-11-01
Abstract
Abstract A support system for a guiding catheter used in coronary treatment such as percutaneous transluminum coronary angioplasty (PTCA) includes a main lumen, a secondary lumen and a linearly incompressible flexible elongate element slidable within the secondary lumen. The main and secondary lumen are connected integrally together throughout the proximal portion of the length of the catheter but are separated throughout a distal portion, the elongate element, which may be a wire or metal strip, being anchored at the distal end of the catheter. The proximal end of the catheter includes operating means to exert endwise force on the elongate element and to cause the separated portion of the secondary lumen to move away from the main lumen so as to brace the catheter against opposed walls of a vessel to retain it in position. When the catheter has been braced against the vessel walls, a PTCA procedure can be carried out.
Inventors
- 👤 Man F. Shiu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:54
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/0102; A61M25/0021; A61M25/0023; A61M25/0026; A61M25/003; A61M2025/0037; A61M2025/0188; A61M25/0041
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
122 words
A catheter having proximal and distal ends, the catheter comprising a primary lumen, a secondary lumen and a linearly incompressible, flexible elongate element slidably disposed within the secondary lumen, the main lumen and secondary lumen being integrally connected together throughout a proximal portion of the length of the catheter and being separated throughout a distal portion, the elongate element being anchored at the distal end of the catheter, and operating means being provided at the proximal end of the catheter to exert endwise force on the elongate element and to cause said separated portion of the secondary lumen to move away from the main lumen whereby the catheter may be braced against opposed walls of a vessel to retain it in position.
Claim 2
Dependent Claim
122 words
A catheter having proximal and distal ends, the catheter comprising a primary lumen, a secondary lumen and a linearly incompressible, flexible elongate element slidably disposed within the secondary lumen, the main lumen and secondary lumen being integrally connected together throughout a proximal portion of the length of the catheter and being separated throughout a distal portion, the elongate element being anchored at the distal end of the catheter, and operating means being provided at the proximal end of the catheter to exert endwise force on the elongate element and to cause said separated portion of the secondary lumen to move away from the main lumen whereby the catheter may be braced against opposed walls of a vessel to retain it in position.
Claim 3
Dependent Claim
16 words
A catheter according to claim 1 wherein the elongate element comprises a strip of incompressible tape.
Claim 4
Dependent Claim
13 words
A catheter according to claim 2 wherein said strip has an arcuate cross-section.
Claim 5
Dependent Claim
18 words
A catheter according to claim 3 wherein said arcuate cross-section has a concave side facing the primary lumen.
Claim 6
Dependent Claim
14 words
A catheter according to claim 1 wherein the elongate element is of incompressible metal.
Claim 7
Dependent Claim
12 words
A catheter according to claim 5 wherein said metal is stainless steel.
Claim 8
Dependent Claim
14 words
A catheter according to claim 1 wherein said elongate element comprises incompressible plastics tape.
Claim 9
Dependent Claim
44 words
A catheter according to claim 1 wherein said operating means comprises a manual slide secured to the elongate element, a slotted portion is provided in said secondary lumen at the proximal end of the catheter and said manual slide projects from said slotted portion.
Claim 10
Dependent Claim
32 words
A catheter according to claim 1 wherein the external cross-section of the catheter is substantially circular throughout said proximal portion in which the primary lumen and secondary lumen are integrally connected together.
Claim 11
Dependent Claim
20 words
A catheter according to claim 1 wherein the internal cross-section of said primary lumen is of laterally enlarged noncircular cross-section.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-03-24 | 1995-09-23 | 1996-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-24 | 1999-09-23 | 2000-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-24 | 2003-09-23 | 2004-03-24 | $7700.00 | Window Closed / Lapsed |