Tubular sheet and strip form prostheses on a basis of biological tissue
Abstract
Abstract There are disclosed tubular, sheet and strip form prostheses on a basis of biological tissue for use in the replacement, repair and strengthening of various living organs such as the vasculature, esophagus, bronchus, intesting, ureter, liver, kidney, etc. and a process for making and using the same. The prosthesis itself comprises a unitary structure of alternating layers of natural tissue and collagen fibers. The same is manufactured by applying a strip, sheet or tube of biological material onto a substantially rigid support, coatings the exposed surface with a binder paste, as for example, a collagen fibre paste, or bringing about the swelling of the exposed surface, thereafter applying a second layer of natural material and repeating the procedure until the desired wall thickness is obtained. The multi-layer prosthesis is then dried and removed from underlying support.
Inventors
- 👤 Bernhard Braun
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |