Surgery – Truss – Perineal
Patent
1977-04-28
1979-01-23
Trapp, Lawrence W.
Surgery
Truss
Perineal
A61H 100
Patent
active
041355008
ABSTRACT:
Apparatus for coupling to a flotation support system as, for example, a water mattress or the like, for purposes of effecting periodic oscillations of said system. The apparatus comprises an expandable and collapsible air bladder, which is positioned beneath the system in force transmitting relationship therewith. An air pumping means is connected in a pneumatic circuit with the air bladder so as to pressurize the bladder and expand same against the overlying support system. Means are provided for periodically venting the pneumatic circuit and air bladder to atmosphere, in consequence of which the bladder collapses under the weight of the overlying system; and thereupon expands following the venting. The resultant expansions and contractions of the bladder thereby effect the desired oscillations of the system. The venting means may comprise a generally gas-tight enclosure positioned in series with the air pump and air bladder, the enclosure including an opening to atmosphere, means normally sealing said opening, and means for periodically unsealing the opening to effect the desired venting. The resulting oscillations of the said flotation support system are deemed to have beneficial effects, especially with respect to infants -- e.g. where said system comprises all or part of an infant mattress assembly.
REFERENCES:
patent: 3462778 (1969-08-01), Whitney
patent: 3492988 (1970-02-01), De Mare
patent: 3587568 (1971-06-01), Thomas
patent: 3760801 (1973-09-01), Borgeas
patent: 3919730 (1975-11-01), Regan
patent: 4048684 (1977-09-01), Korner et al.
Medpro, Inc.
Trapp Lawrence W.
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