US3881199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Urethral shunt tube implant
Assignee: Richards Manufacturing Co LP
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Filing: 1973-06-11
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Granted: 1975-05-06
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Expires: 1993-06-11
Abstract
Abstract A tubular implant for surgically bypassing the distal portion of the natural urethral tract to relieve urethral obstruction of certain animals, e.g., particularly cats and more particularly male cats. The implant includes a flexible tube having an interior end for attachment to the severed end of the urethra and an exterior end protruding outwardly from the body of the animal and being communicated with the interior end, thus providing a new passageway for the animal to pass fluids discharged by the kidneys. The implant includes a first patch for engaging the internal side of the dermal layer of the animal and being attached thereto, as with sutures. The tube extends through an aperture provided in the first patch with the first patch and the tube being fixedly attached one to the other by an adhesive. The implant also includes a second patch for engaging the outer wall of the urethra and which is attached to the urethra, as with sutures. The tube also extends through an aperture provided in the second patch with the second patch and the tube being fixedly attached one to the other by an adhesive.
Inventors
- 👤 James T Treace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:51
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/0004; A61F2/0022
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
241 words
A surgical implant for bypassing the distal portion of the natural urethra tract to relieve urethral obstruction of certain animals, said implant comprising a tube having an interior open end communicated with an exterior open end, a first flexible patch extending radially outwardly from said tube for attachment to the dermal layer of the animal, said first patch being provided with an aperture centrally thereof and receiving said tube therethrough, said first patch being attached to said tube adjacent said exterior end thereof, a second flexible patch extending radially outwardly from said tube for attachment to the severed end of the urethra of the animal, said second patch being provided with an aperture centrally thereof and receiving said tube therethrough, said second patch being attached to said tube intermediate the ends thereof, said interior open end of said tube being adapted for receiving the severed end of the urethra to communicate the bladder of the animal with said exterior open end of said tube, and said flexible tube and said first and second patches being compatible with and resistant to attack by animal body fluids, said first and second patches being formed from silicone impregnated Dacron mesh fabric, said tube being formed from silicone-elastomer, silicone adhesive means for fixedly attaching said first and second mesh patches to said tube, said adhesive means additionally establishing washerlike seal means for sealable engagement with certain portions of the animal abuttingly engaging said adhesive means.
Claim 2
Dependent Claim
241 words
A surgical implant for bypassing the distal portion of the natural urethra tract to relieve urethral obstruction of certain animals, said implant comprising a tube having an interior open end communicated with an exterior open end, a first flexible patch extending radially outwardly from said tube for attachment to the dermal layer of the animal, said first patch being provided with an aperture centrally thereof and receiving said tube therethrough, said first patch being attached to said tube adjacent said exterior end thereof, a second flexible patch extending radially outwardly from said tube for attachment to the severed end of the urethra of the animal, said second patch being provided with an aperture centrally thereof and receiving said tube therethrough, said second patch being attached to said tube intermediate the ends thereof, said interior open end of said tube being adapted for receiving the severed end of the urethra to communicate the bladder of the animal with said exterior open end of said tube, and said flexible tube and said first and second patches being compatible with and resistant to attack by animal body fluids, said first and second patches being formed from silicone impregnated Dacron mesh fabric, said tube being formed from silicone-elastomer, silicone adhesive means for fixedly attaching said first and second mesh patches to said tube, said adhesive means additionally establishing washerlike seal means for sealable engagement with certain portions of the animal abuttingly engaging said adhesive means.
Claim 3
Dependent Claim
284 words
A surgical implant for bypassing the distal portion of the natural urethra tract to relieve urethral obstruction of certain animals, said implant comprising a flexible tube having a beveled interior open end communicated with an exterior open end, a first flexible patch extending radially outwardly of said tube for attachment to the dermal layer of the animal, said first patch being provided with an aperture centrally thereof and receiving said tube therethrough, first silicone adhesive means for fixedly attaching said first patch to said tube adjacent said exterior end thereof, said first silicone adhesive means establishing washerlike seal means for sealable engagement with the dermal layer of the animal, a second flexible patch extending radially outwardly of said tube for attachment to the severed end of the urethra of the animal, said second patch being provided with an aperture centrally thereof and receiving said tube therethrough, second silicone adhesive means for fixedly attaching said first patch to said tube intermediate the ends thereof, said second silicone adhesive means establishing washerlike seal means for sealable engagement with the severed end of the urethra of the animal, said beveled interior end of said tube facilitating insertion of said implant into the severed end of the urethra to communicate the bladder of the animal with said exterior open end of said tube, said tube having a predetermined length from said second patch to said beveled interior end thereof to assure optimum engagement with the urethra of the animal, said first and second patches having a predetermined spaced apart distance to assure optimum positioning of the severed end of tHe urethra, and said first and second patches being compatible with and resistant to attack by animal body fluids.
Claim 4
Dependent Claim
284 words
A surgical implant for bypassing the distal portion of the natural urethra tract to relieve urethral obstruction of certain animals, said implant comprising a flexible tube having a beveled interior open end communicated with an exterior open end, a first flexible patch extending radially outwardly of said tube for attachment to the dermal layer of the animal, said first patch being provided with an aperture centrally thereof and receiving said tube therethrough, first silicone adhesive means for fixedly attaching said first patch to said tube adjacent said exterior end thereof, said first silicone adhesive means establishing washerlike seal means for sealable engagement with the dermal layer of the animal, a second flexible patch extending radially outwardly of said tube for attachment to the severed end of the urethra of the animal, said second patch being provided with an aperture centrally thereof and receiving said tube therethrough, second silicone adhesive means for fixedly attaching said first patch to said tube intermediate the ends thereof, said second silicone adhesive means establishing washerlike seal means for sealable engagement with the severed end of the urethra of the animal, said beveled interior end of said tube facilitating insertion of said implant into the severed end of the urethra to communicate the bladder of the animal with said exterior open end of said tube, said tube having a predetermined length from said second patch to said beveled interior end thereof to assure optimum engagement with the urethra of the animal, said first and second patches having a predetermined spaced apart distance to assure optimum positioning of the severed end of tHe urethra, and said first and second patches being compatible with and resistant to attack by animal body fluids.
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) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |