US4959057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catheter for organ perfusion
Assignee: Fresenius SE and Co KGaA
•
Filing: 1989-03-23
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Granted: 1990-09-25
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Expires: 2009-03-23
Abstract
Abstract Catheter comprising a catheter shank 2 and a lateral opening 9 spaced from the front open end 4 thereof in which spaced from the lateral opening 9 a conical sealing ring 7 with rearwardly increasing diameter is disposed on the outer wall of the catheter shank 2.
Inventors
- 👤 Thomas Lang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:27
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0067; A61M25/0068; A61M25/007; A61M25/01; A61M25/02; A61M25/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
113 words
A catheter for vessel perfusion including an elongated tubular shank having proximal and distal ends, characterized in that the distal end is atraumatically enlarged in the form of a bead, a first sealing ring concentric with the shank is fixedly carried by the shank and closely spaced in the proximal direction from the distal end, a second sealing ring concentric with the shank is fixedly carried by the shank and closely spaced in the proximal direction from the first ring, and each sealing ring is of conical form widening in the proximal direction, and a lateral opening is provided in the wall of the shank intermediate the distal end and the first ring.
Claim 2
Dependent Claim
113 words
A catheter for vessel perfusion including an elongated tubular shank having proximal and distal ends, characterized in that the distal end is atraumatically enlarged in the form of a bead, a first sealing ring concentric with the shank is fixedly carried by the shank and closely spaced in the proximal direction from the distal end, a second sealing ring concentric with the shank is fixedly carried by the shank and closely spaced in the proximal direction from the first ring, and each sealing ring is of conical form widening in the proximal direction, and a lateral opening is provided in the wall of the shank intermediate the distal end and the first ring.
Claim 3
Dependent Claim
19 words
Catheter according to claim 1, characterized in that the sealing rings are an integrated part of the catheter shank.
Claim 4
Dependent Claim
19 words
Catheter according to claim 1, characterized in that the sealing rings are parts subsequently applied to the catheter shank.
Claim 5
Dependent Claim
20 words
Catheter according to claim 1, characterized in that the sealing rings consist of the same material as the catheter shank.
Claim 6
Dependent Claim
25 words
Catheter according to claim 1, characterized in that the sealing rings consist of a plastic which is softer than the material of the catheter shank.
References Cited (Backward Citations)
US3788328A
Cited
US4392855A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-09-24 | 1994-03-26 | 1994-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-24 | 1998-03-26 | 1998-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-24 | 2002-03-26 | 2002-09-25 | $7700.00 | Window Closed / Lapsed |