US4955858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ureter drain catheter releasably clamped to an advancing tube
Assignee: Uromed Kurt Drews GmbH
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Filing: 1989-09-12
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Granted: 1990-09-11
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Expires: 2009-09-12
Abstract
Abstract A ureter drain catheter is detachably connected to an extension advancing tube by insertion of a cross sectionally reduced neck at the end of the advancing tube into the proximal end of the ureter drain catheter and is clamped by a mandrin extending through the advancing tube and into the neck in the drain catheter. The design of the neck is such that, at the clamping site, the mandrin is held in place on all sides by the snadwiched neck without making contact with the inner surface of the drain catheter.
Inventors
- 👤 Kurt Drews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:54
CPC Classifications
A; A61; A61M; A61M27/00; A61M27/002; A61M27/008; A61F; A61F2/00; A61F2/02; A61F2/04; A61M25/00; A61M25/01; A61M25/0102
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
131 words
A ureter drain catheter and positioning assembly comprising a flexible ureter drain catheter having an open proximal end and inner and outer substantially cylindrical surfaces; an advancing tube having an open distal end terminating in a cross sectionally reduced neck with an outer diameter smaller than the inner diameter of said drain catheter so that said distal end is insertable into the proximal end of said ureter drain catheter, and a mandrin insertable through said advancing tube and into said neck, said mandrin having an outer diameter greater than the inner diameter of said neck such that neck is clamped between said mandrin and said inner surface of said drain catheter and said mandrin is substantially centrally positioned in said catheter without making contact with said inner surface of said catheter.
Claim 2
Dependent Claim
131 words
A ureter drain catheter and positioning assembly comprising a flexible ureter drain catheter having an open proximal end and inner and outer substantially cylindrical surfaces; an advancing tube having an open distal end terminating in a cross sectionally reduced neck with an outer diameter smaller than the inner diameter of said drain catheter so that said distal end is insertable into the proximal end of said ureter drain catheter, and a mandrin insertable through said advancing tube and into said neck, said mandrin having an outer diameter greater than the inner diameter of said neck such that neck is clamped between said mandrin and said inner surface of said drain catheter and said mandrin is substantially centrally positioned in said catheter without making contact with said inner surface of said catheter.
Claim 3
Dependent Claim
30 words
A ureter drain in accordance with claim 1, wherein said neck is a tubular portion of said advancing tube with inside and outside diameters less than those of said catheter.
Claim 4
Dependent Claim
33 words
A ureter drain according to claim 1 wherein said neck comprises a plurality of longitudinally separated strips having tubular sector shapes in crosssection, said strips being substantially symmetrical relative to the tube axis.
References Cited (Backward Citations)
DE3339179A1
Cited
US4547194A
Cited
DE8614013U1
Cited
DE3714839A1
Cited
US4875489A
Cited
US4787884A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-09-10 | 1994-03-12 | 1994-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-10 | 1998-03-12 | 1998-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-10 | 2002-03-12 | 2002-09-11 | $7700.00 | Window Closed / Lapsed |