Surgery – Truss – Perineal
Patent
1991-11-25
1993-02-16
Hafer, Robert A.
Surgery
Truss
Perineal
128 242, 128 38, A61H 700, A61H 100
Patent
active
051861631
ABSTRACT:
This invention relates to venous blood flow in a patient's limb which is promoted by repeating a cycle of sequentially applying compressive pressures against a patient's limb through a flexible, pressurizable sleeve having pressure chambers progressively arranged along the limb in relation to the patient's heart. Specifically, the pressure chambers from the distal to proximal are pressurized until they are at their appropriate pressures so as to collapse the veins in the limb. At the end of the most proximal compression, a foot chamber is compressed at a substantially higher pressure than the other chambers to force a bolus of blood from the foot into the limb causing the collapsed veins to open, the support of the chambers minimizing distention of the veins and enhancing the transmitting of blood up the limb.
REFERENCES:
patent: 3403673 (1968-10-01), MacLeod
patent: 3865103 (1975-02-01), Folman
patent: 3993053 (1976-11-01), Grossar
patent: 4702232 (1987-10-01), Gardner et al.
patent: 4841956 (1989-06-01), Gardner et al.
patent: 4865020 (1989-09-01), Bullard
patent: 4941458 (1990-07-01), Taheri
Hafer Robert A.
Hanlon Brian E.
Isaacs Alvin
The Kendall Company
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