Patent US3783454A successfully refreshed from Google Patents.
US3783454A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surgically implantable prosthetic duct for the removal of biological liquids
Assignee: Gambro Industries SAS
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Filing: 1972-03-29
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Granted: 1974-01-08
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Expires: 1992-03-29
Abstract
Abstract A duct for the removal of biological liquids, especially urine, in the form of a tubular body having internal and external surfaces, at least, of silicone elastomer. Near its upper end, e.g., for connection to a ureter, the body is surrounded by a woven or knitted textile sheath, which is secured by silicone elastomer adhesive to the body and is used as a suturing member for securing the duct to the ureter. Near its lower end the body is provided with a similar sheath or a radially outwardly projecting flange to secure it, e.g., to a bladder.
Inventors
- 👤 A Sausse
- 👤 A Stern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:31
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/02; A61M39/0247; A61F; A61F2/00; A61F2/02; A61F2/04; A61L; A61L27/00; A61L27/14; A61L27/18; A61M2039/0276
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
23 words
A duct as claimed in claim 1, wherein the tubular sheath fabric is selected from the group consisting of knitted and woven fabrics.
Claim 2
Dependent Claim
41 words
A duct as claimed in claim 1, wherein at least one of the interior and exterior surfaces at said upstream end of said body is tapered conically, the angle at the apex of the conical taper being less than 90* .
Claim 3
Dependent Claim
28 words
A duct as claimed in claim 1, wherein the upstream end of said body projects beyond the sheath by a distance of between 10 mm. and 20 mm.
Claim 4
Dependent Claim
25 words
A duct as claimed in claim 1, and further comprising an upper edge to said sheath, wherein said upper edge is covered with silicone elastomer.
Claim 5
Dependent Claim
20 words
A duct as claimed in claim 1, wherein said retaining means comprises a further sheath of cell colonizable textile fabric.
Claim 6
Dependent Claim
22 words
A duct as claimed in claim 1, wherein said retaining means comprises a radially outwardly projecting firm stop ring on said body.
Claim 7
Dependent Claim
17 words
A duct as claimed in claim 1, wherein said downstream end is provided with a non-return valve.
Claim 8
Dependent Claim
23 words
A duct as claimed in claim 1, wherein said inner surface of said body is coated with a smooth coating of silicone elastomer.
Claim 9
Dependent Claim
18 words
A duct as claimed in claim 6 wherein said sheath is rolled up to form an external bead.
Claim 10
Dependent Claim
22 words
A duct as claimed in claim 6 wherein said further sheath surrounds and is secured to said body near its downstream end.
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) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |