Walker wedge

Surgery – Body rests – supports or positioners for therapeutic purpose

Reexamination Certificate

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Details

C128S869000, C602S019000

Reexamination Certificate

active

07445008

ABSTRACT:
A cushion for use with a variety of types of seats, for example, automotive seats, to adjust the sacrum thereby pivoting the pelvis to assist in maintaining the spine in equilibrium. The cushion is preferably separate from the seat and has central and end support areas that have a density or compressibility that is greater than that of the interconnecting portions. The central area is also provided with one of a plurality of inserts that individually have varying compressibility so that the compressibility of the central area is variable by changing between the inserts.

REFERENCES:
patent: 4475543 (1984-10-01), Brooks
patent: 4572578 (1986-02-01), Perkins
patent: 4597386 (1986-07-01), Goldstein
patent: 4752067 (1988-06-01), Colonello
patent: 5201761 (1993-04-01), Serola
patent: 5452728 (1995-09-01), Iams
patent: 5452940 (1995-09-01), Maier
patent: 5547251 (1996-08-01), Axelson
patent: 5626616 (1997-05-01), Speece
patent: 6041457 (2000-03-01), Summers
patent: 6125851 (2000-10-01), Walker et al.
patent: 6532962 (2003-03-01), Walker et al.

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