US3786802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leg unit inserts
Assignee: Intermedics Cardiassist Corp
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Filing: 1972-10-24
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Granted: 1974-01-22
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Expires: 1992-10-24
Abstract
Abstract In an external pressure circulatory assist apparatus of the kind wherein hydraulic pressure is cycled against a patient''s legs usually in synchronization with the patient''s heartbeat, means to improve the performance of the apparatus on smaller patients by providing rigid leg inserts adapted to fit between the upper portion of a supine patient''s legs and a rigid shell for enclosing both the inserts and a hydraulic blanket. The inserts provide means to improve pressure cycle control on a patient''s legs.
Inventors
- 👤 N Hagopian
- 👤 J Colman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:01
CPC Classifications
A; A61; A61H; A61H9/00; A61H9/005; A61H9/0078; A61H2230/00; A61H2230/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
88 words
In external pressure circulatory assist apparatus comprising a rigid housing adapted for holding limbs of a patient and a liquid-filled blanket adapted for transmitting pressure to said limbs from a mechanical pressure-causing device, the improvement comprising a pair of rigid non-compressible inserts of generally truncated semi-conical shape adapted to be placed over each of said patient''s limbs, said inserts between said blanket and said rigid housing, said inserts forming means adapted to substantially decrease the annular distance between the patient''s limbs and the inner walls of said housing.
Claim 2
Dependent Claim
88 words
In external pressure circulatory assist apparatus comprising a rigid housing adapted for holding limbs of a patient and a liquid-filled blanket adapted for transmitting pressure to said limbs from a mechanical pressure-causing device, the improvement comprising a pair of rigid non-compressible inserts of generally truncated semi-conical shape adapted to be placed over each of said patient''s limbs, said inserts between said blanket and said rigid housing, said inserts forming means adapted to substantially decrease the annular distance between the patient''s limbs and the inner walls of said housing.
Claim 3
Dependent Claim
15 words
Apparatus as defined in claim 1 wherein said inserts are mechanically fastened to said housing.
Claim 4
Dependent Claim
28 words
Apparatus as defined in claim 1 wherein said inserts form, with the interior walls of said leg housing, a continuous curved wall in contact with said liquid-filled blanket.
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) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |