Patent US4969902A successfully refreshed from Google Patents.
US4969902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Implantable device
Assignee: Individual
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Filing: 1988-08-08
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Granted: 1990-11-13
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Expires: 2008-08-08
Abstract
Abstract An artificial anus includes a hollow tubular support member, having a cylindrical body portion and a pair of radially-extending flanges at the two opposed open ends of the body portion, and a releasable plug for sealingly closing the hollow support member. The support member is suitable for implantation within an opening in the abdominal wall of the patient, with one of the radially-extending flanges lying upon the dermis or subcutaneous tissue, the other of the flanges lying on the fascia or peritoneum, and the end of the patient's colon received within the support member. Inner and outer layers of at least a portion of the cylindrical body portion are capable of receiving soft tissue ingrowth. A pressure transducer or electrical contact is provided on the support member and connected to an electrode in contact with the patient's skin, so that when the colon becomes pressurized the patient is signalled that the plug should be released. The device can be modified to serve as an artificial bladder or implantable body access device.
Inventors
- 👤 Biagio Ravo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:21
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/0004; A61F2/0009; Y; Y10; Y10S; Y10S128/00; Y10S128/25
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
267 words
An artificial bladder suitable for implantation in the body of a patient comprising: a hollow container comprised of a flexible water-impermeable wall material defining an interior space within the container, with an opening being provided in the wall of said container affording fluid communication between said interior space and the exterior of the container, said wall material including an inner layer and an outer layer, each layer being separable from one another, with said inner layer being non-porous and water-impermeable and with a substantial portion of said outer layer being non-resorbable, porous, and capable of receiving soft tissue ingrowth to enhance the anchoring of said artificial bladder in the body of the patient; a first port connected to said container and surrounding said opening, said port being adapted for attachment to the urethra of the patient; means for permitting opening and closing of said first port from the exterior of the artificial bladder to permit the displacement of liquid from the container through the urethra, wherein during said liquid displacement said inner layer separates from said outer layer and collapses inwardly while said outer layer substantially maintains an expanded configuration; a second port connected to said container and displaced from said first port and said opening, said second port being adapted for attachment to the end of a ureter of the patient and including a one-way valve permitting fluid flow from the urether to said container and preventing fluid flow in the opposite direction; and means for generating and transmitting to the patient a signal when a predetermined amount of liquid has been collected in said container.
Claim 2
Dependent Claim
267 words
An artificial bladder suitable for implantation in the body of a patient comprising: a hollow container comprised of a flexible water-impermeable wall material defining an interior space within the container, with an opening being provided in the wall of said container affording fluid communication between said interior space and the exterior of the container, said wall material including an inner layer and an outer layer, each layer being separable from one another, with said inner layer being non-porous and water-impermeable and with a substantial portion of said outer layer being non-resorbable, porous, and capable of receiving soft tissue ingrowth to enhance the anchoring of said artificial bladder in the body of the patient; a first port connected to said container and surrounding said opening, said port being adapted for attachment to the urethra of the patient; means for permitting opening and closing of said first port from the exterior of the artificial bladder to permit the displacement of liquid from the container through the urethra, wherein during said liquid displacement said inner layer separates from said outer layer and collapses inwardly while said outer layer substantially maintains an expanded configuration; a second port connected to said container and displaced from said first port and said opening, said second port being adapted for attachment to the end of a ureter of the patient and including a one-way valve permitting fluid flow from the urether to said container and preventing fluid flow in the opposite direction; and means for generating and transmitting to the patient a signal when a predetermined amount of liquid has been collected in said container.
Claim 3
Dependent Claim
19 words
A device of claim 1 wherein said generating and transmitting means comprises a pressure transducer included on said container.
Claim 4
Dependent Claim
42 words
A device of claim 1 wherein said generating and transmitting means includes an electrode capable of being placed in contact with the patient's skin in use, said electrode being adapted to emit a mild electrical signal to the patient's skin when energized.
Claim 5
Dependent Claim
61 words
A device of claim 1 further comprising a third port connected to said container and displaced from said first port and said opening, said third port being adapted for attachment to the end of a ureter of the patient and including a one-way valve permitting fluid flow from the ureter to said container and preventing fluid flow in the opposite direction.
Claim 6
Dependent Claim
30 words
A device of claim 1 wherein said opening and closing permitting means comprises a manually-actuated valve provided in said first port, said manually-actuated valve being closed in its rest condition.
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) | 1993-11-12 | 1994-05-14 | 1994-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-11-12 | 1998-05-14 | 1998-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-11-12 | 2002-05-14 | 2002-11-13 | $7700.00 | Window Closed / Lapsed |