Fluid handling – Flow affected by fluid contact – energy field or coanda effect – Means to regulate or vary operation of device
Patent
1979-03-22
1981-02-10
Frinks, Ronald L.
Fluid handling
Flow affected by fluid contact, energy field or coanda effect
Means to regulate or vary operation of device
1375274, 1375278, 251 65, A61F 122
Patent
active
RE0305073
ABSTRACT:
A heart valve having a base with a passage and a free-floating pivoting disc for controlling the flow of blood through the passage. Inwardly directed proximal and distal pivots control the pivoting movement of the disc. The pivots are offset from the diameter of the disc so that the disc pivots between its open and closed positions between its center and an outer peripheral edge of the disc. The disc is held in free-floating assembled relation with the pivots and base with a curved retaining rod having a curved end projected through a central hole in the disc. In one form of the valve a permanent magnet in the disc assists the closing of the disc in response to a drop in the pressure of blood moving through the valve passage. A suture collar surrounds and is mounted on the outer portions of the base. A low friction sleeve interposed between the base and the collar permits rotation of the valve relative to the suturing collar after the collar has been attached to the heart tissue.
REFERENCES:
patent: 2646071 (1953-07-01), Wagner
patent: 3370305 (1968-02-01), Goott et al.
patent: 3409038 (1968-11-01), Blackford
patent: 3438394 (1969-04-01), Nakib
patent: 3451067 (1969-06-01), Jordan
patent: 3476143 (1969-11-01), Kaster
patent: 3546711 (1970-12-01), Bokros
patent: 3594824 (1971-07-01), Nakib
patent: 3717883 (1973-02-01), Mosher
patent: 3825956 (1974-07-01), Child
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