US3811446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Endarterectomy apparatus
Assignee: Cook Inc
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Filing: 1970-11-09
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Granted: 1974-05-21
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Expires: 1990-11-09
Abstract
Abstract AN APPARATUS AND METHOD FOR REMOVING ARTERIOSCLEROTIC MATERIAL FROM AN ARTERY. AN ELECTRIC MOTOR IS CONNECTED BY FLEXIBLE SPRINGS OR TORQUE SHAFT TO A ROTATION OSCILLATION CONVERTER. A ROD HAVING A BENDABLE LOOPED TIP OR LOOP AT ITS DISTAL END IS REMOVABLY CONNECTED TO THE OSCILLATORY OUTPUT OF THE CONVERTER. THE LOOP OR TIP IS INSERTED INTO THE ARTERY WHICH HAS BEEN CUT TO RECEIVE THE TIP. THE TIP IS OSCILLATED BETWEEN THE MEDIA LAYER AND ADVANTITIA LAYER STRETCHING THE ADVENTITIA LAYER AND CAUSING SEPARATION OF THE TWO LAYERS. THE LOOSENED ARTERIOSCLEROTIC CORE IS THEN REMOVED INTACT FROM THE ARTERY WHICH IS THEN SURGICALLY CLOSED. D R A W I N G
Inventors
- 👤 E Lerwick
- 👤 W Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:53
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/22; A61B17/221; A61B2017/2212; A61B17/32; A61B17/3205; A61B17/3207; A61B2017/320733; A61B2017/320741; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18232; Y10T74/1824
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-20 | 1977-11-19 | 1978-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-20 | 1981-11-19 | 1982-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-20 | 1985-11-19 | 1986-05-21 | $7700.00 | Window Closed / Lapsed |