US3924632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fiber glass reinforced catheter
Assignee: Individual
•
Filing: 1974-06-17
•
Granted: 1975-12-09
•
Expires: 1994-06-17
Abstract
Abstract A catheter body for intubation of body organs and vessels. A plastic inner core has fiber glass bands spiralingly wrapped around its length. Each fiber glass band has individual strands of fiber glass laid in a side by side position. An outer plastic tube encloses the inner core and fiber glass bands. The inner surface of the outer tube is united to the inner core between the bands of fiber glass. The fiber glass bands are wrapped in a mesh braid having five picks per inch.
Inventors
- 👤 William A Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:18
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0043; A61M25/005; A61M25/0009; A61M25/0012
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
154 words
An intravascular catheter comprising: a. an inner hollow and flexible plastic core having a circular cross section, an outer surface and a first length; b. an outer flexible plastic tube having an inner surface united to said outer surface of said core along said first length; c. and fiber glass bands spaced apart and spiralled around said core between said core and said tube; some of said bands being spiralled clockwise and some of said bands being spiralled counterclockwise around said core, said bands each comprising individual multi-filament strands of fiber glass laid in a side-by-side position, said invididual strands moving relative to one another during bending of the catheter allowing the cross section of the bands to change and thus facilitating flexibility of the catheter as well as maintaining good torsional rigidity, said outer surface of said inner core being cohesively united to said inner surface of said outer tube between said bands.
Claim 2
Dependent Claim
154 words
An intravascular catheter comprising: a. an inner hollow and flexible plastic core having a circular cross section, an outer surface and a first length; b. an outer flexible plastic tube having an inner surface united to said outer surface of said core along said first length; c. and fiber glass bands spaced apart and spiralled around said core between said core and said tube; some of said bands being spiralled clockwise and some of said bands being spiralled counterclockwise around said core, said bands each comprising individual multi-filament strands of fiber glass laid in a side-by-side position, said invididual strands moving relative to one another during bending of the catheter allowing the cross section of the bands to change and thus facilitating flexibility of the catheter as well as maintaining good torsional rigidity, said outer surface of said inner core being cohesively united to said inner surface of said outer tube between said bands.
Claim 3
Dependent Claim
176 words
An intravascular catheter comprising: a. an inner hollow and flexible plastic core having a circular cross section, an outer surface and a first length; b. an outer flexible plastic tube having an inner surface united to said outer surface of said core along said first length; c. fiber glass bands spaced apart and spiralled around said core between said core and said tube; some of said bands being sprialled clockwise and some of said bands being spiralled counterclockwise around said core, said bands each having individual multi-filament strands of fiber glass laid in a side-by-side position, said individual strands being capable of moving relative to one another during bending of the catheter allowing the cross section of the bands to change and thus facilitating flexibility of the catheter as well as maintaining good torsional rigidity, said outer surface of said inner core being cohesively united to said inner surface of said outer tube between said bands; d. and a distal end portion connected to the core and the tube and formed of a flexible thermoplastic material.
Claim 4
Dependent Claim
176 words
An intravascular catheter comprising: a. an inner hollow and flexible plastic core having a circular cross section, an outer surface and a first length; b. an outer flexible plastic tube having an inner surface united to said outer surface of said core along said first length; c. fiber glass bands spaced apart and spiralled around said core between said core and said tube; some of said bands being sprialled clockwise and some of said bands being spiralled counterclockwise around said core, said bands each having individual multi-filament strands of fiber glass laid in a side-by-side position, said individual strands being capable of moving relative to one another during bending of the catheter allowing the cross section of the bands to change and thus facilitating flexibility of the catheter as well as maintaining good torsional rigidity, said outer surface of said inner core being cohesively united to said inner surface of said outer tube between said bands; d. and a distal end portion connected to the core and the tube and formed of a flexible thermoplastic material.
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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) | 1978-12-08 | 1979-06-09 | 1979-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-08 | 1983-06-09 | 1983-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-08 | 1987-06-09 | 1987-12-09 | $7700.00 | Window Closed / Lapsed |