Patent US4955899A successfully refreshed from Google Patents.
Patent US4290428A successfully refreshed from Google Patents.
US4290428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catheter with bulb
Assignee: FARCOT JEAN
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Filing: 1979-08-16
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Granted: 1981-09-22
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Expires: 1999-08-16
Abstract
Abstract This catheter for blood retroperfusion comprises a tube and a flexible bulb through which the tube passes; ports are formed in the tube portion surrounded by the bulb, and their total surface area is at least equal to the total surface area of the fluid passage of the tube between the latter and the cavity into which the catheter is introduced in actual use.
Inventors
- 👤 Alain J. M. Durand
- 👤 Jean C. Farcot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:57
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
96 words
A catheter for blood retroperfusion, which comprises a tube of which the inner fluid passage opens directly into a bulb secured non-detachably to said tube, said bulb further comprising an orifice communicating with the cavity into which the catheter is introduced in actual use, wherein the total surface area of the communication ports between said tube fluid passage and the inner space of said bulb is at least equal to the total surface area of the orifice permitting the communication between the inner space of said bulb and the cavity into which the catheter is introduced.
Claim 2
Dependent Claim
96 words
A catheter for blood retroperfusion, which comprises a tube of which the inner fluid passage opens directly into a bulb secured non-detachably to said tube, said bulb further comprising an orifice communicating with the cavity into which the catheter is introduced in actual use, wherein the total surface area of the communication ports between said tube fluid passage and the inner space of said bulb is at least equal to the total surface area of the orifice permitting the communication between the inner space of said bulb and the cavity into which the catheter is introduced.
Claim 3
Dependent Claim
12 words
The catheter of claim 1, wherein said bulb is of elastomeric material.
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) | 1984-09-21 | 1985-03-23 | 1985-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-21 | 1989-03-23 | 1989-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-21 | 1993-03-23 | 1993-09-22 | $7700.00 | Window Closed / Lapsed |