Title:
Moving pressure support
Kind Code:
A1


Abstract:
The support product repeatedly moves points of maximal pressure between the product and a weight supported by the product, which is especially useful for avoiding problems such as bed sores.



Inventors:
Mcgrath, Rae (Orland Park, IL, US)
Application Number:
10/159421
Publication Date:
12/04/2003
Filing Date:
05/30/2002
Assignee:
MCGRATH RAE
Primary Class:
Other Classes:
5/648, 5/702
International Classes:
A47C20/00; A47C20/02; A61G7/057; (IPC1-7): A47C20/02; A47C17/00
View Patent Images:
Related US Applications:
20070061973Wound elevation protection and prevention deviceMarch, 2007Kimball
20090288256Headrest for protecting a hairstyleNovember, 2009Douglas
20040187206Convertible furniture assemblySeptember, 2004Devlin
20090222996PRESSURE REDUCTION HEALTHCARE MATTRESS SYSTEMSeptember, 2009Balonick et al.
20070214569Bed coverSeptember, 2007Miller
20040025254Self-inflating changing padFebruary, 2004Mccarthy
20090056019Retractable Toe Tent Device and Method of Using SameMarch, 2009Alston
20090188045Under-thigh supportJuly, 2009Anikin
20040040088Multi-use-pillow toyMarch, 2004Lowell
20050011003Sling attachment deviceJanuary, 2005Davis
20100064436DUVET AND DUVET COVER COMBINATIONMarch, 2010Brandt



Primary Examiner:
TRETTEL, MICHAEL
Attorney, Agent or Firm:
RAE MCGRATH (ORLAND PARK, IL, US)
Claims:
1. A support product which repeatedly moves pressure between the product and a weight supported by the product, the product comprising: a chamber; beads, the beads being in the chamber, the beads providing a changeable configuration of points of maximal pressure between the chamber and an object supported on the chamber; and moving means for moving the beads in the chamber to cause the changeable configuration of points of maximal pressure to change repeatedly while the object is supported, the moving means being in the chamber with the beads.

2. The product of claim 1 wherein there is a lubricating fluid in the chamber for easing moving the beads.

3. A support product which repeatedly moves pressure between the product and a weight supported by the product, the product comprising: a chamber; beads, the beads being in the chamber, the beads providing a changeable configuration of points of maximal pressure between the chamber and an object supported on the chamber; and moving means for moving the beads in the chamber to cause the changeable configuration of points of maximal pressure to change repeatedly while the object is supported, the moving means being in a second chamber.

4. A support product which repeatedly moves pressure between the product and a weight supported by the product, the product comprising: a chamber; beads, the beads being in the chamber, the beads providing a changeable configuration of points of maximal pressure between the chamber and an object supported on the chamber; moving means for moving the beads in the chamber to cause the changeable configuration of points of maximal pressure to change repeatedly while the object is supported, the moving means being in the chamber with the beads; and a lubricating fluid in the chamber for easing moving the beads.

5. A support product which repeatedly moves pressure between the product and a weight supported by the product, the product comprising: a chamber; beads, the beads being in the chamber, the beads providing a changeable configuration of points of maximal pressure between the chamber and an object supported on the chamber; moving means for moving the beads in the chamber to cause the changeable configuration of points of maximal pressure to change repeatedly while the object is supported, the moving means being in a second chamber; and a lubricating fluid in the chamber for easing moving the beads.

Description:
[0001] The support product repeatedly moves points of maximal pressure between the product and a weight supported by the product, which is especially useful for avoiding problems such as bed sores.

[0002] FIG. 1 depicts the product in use supporting an object, for example a leg.

[0003] FIG. 2 is a view across line 2-2 depicting a chamber, beads in the chamber, an optional second chamber, and moving means.

[0004] FIG. 3 depicts motions of beads which move points of maximal pressure between the chamber and the object being supported.

[0005] The product 10 comprises a chamber 30, beads in the chamber, for example 11 and 12, and moving means moving the beads. The beads provide a changeable configuration of points of maximal pressure between the chamber and an object—91 for example—supported on the chamber. There can be a lubricating fluid 21 in the chamber for easing moving the beads.

[0006] For example—as depicted in FIG. 3—bead 11 contacts the chamber at point 51. The chamber contacts the object at point 52. The pressure between the chamber and the object is maximal at point 52. The pressure at point 53 is less.

[0007] When bead 11 moves to the position indicated by 11A the bead contacts the chamber at point 51A and the chamber contacts the object at point 52A. Then the pressure between the chamber and the object is maximal at point 51A and is less at point 53A.

[0008] As other beads move similarly—for example 12 moving to 12A—the beads provide a changeable configuration of points of maximal pressure between the chamber and the object. Thus, the pressure between parts of the object and the chamber change so that the parts of the object are not subject to the constant pressure which causes harm such as bed sores.

[0009] The beads are not moved by motions of the object. The product has moving means for moving the beads in the chamber to cause the changeable configuration of points of maximal pressure to change repeatedly while the object is supported.

[0010] The product is especially useful for supporting objects which will not move for an extended period of time. The points of maximal pressure move many times while the object is supported. The rate of moving in this use depends on many factors such as the properties of the object being supported. For example, when the object is a part of a person's body, then factors such as weight, age, skin condition are important for determining the rate of moving of the beads.

[0011] The moving means—depicted schematically as 41, 42, 43—can be in indirect contact with the beads as depicted in FIG. 2. There the chamber is defined by walls 31 and 32 and the moving means is in a second chamber 40 defined by walls 32 and 44.

[0012] The moving means can be in a second chamber which is independent of the chamber. Then the chamber can be supported on the second chamber.

[0013] The moving means can be in direct contact with the beads. For example the wall 32 can be absent so that the moving means is in the chamber, where the chamber is now defined by walls 31 and 44.

[0014] Moving means can be any means which does move beads in a chamber so that points of maximal pressure move many times while an object is supported on the chamber. For example, moving means can be electro-mechanical, can be fluidic, can be fluid flow interacting directly with the beads, and can be combinations of these and other means so long as the required function is provided.

[0015] The chamber can be made of various materials in various configurations so long as the needed functions are provided. The portion of the chamber on which objects are supported should be flexible to maximize the difference between points of maximal pressure and the pressures elsewhere.

[0016] The beads can be made of various materials in various configurations so long as the needed functions are provided. For example, beads can be solid, hollow, spherical, non-spherical, faceted, fixed in a regular, moving array, fixed in an irregular, moving array, and various combinations of these and other properties so long as the beads provide the moving points of maximal pressure.

[0017] The moving means can be any means which does move the beads to provide moving points of maximal pressure. The moving means can cause motions of the beads which are regular, which are irregular, which are random, and which are various combinations of these.

[0018] The product can be made to support various objects. For example the product can support a body part such as the leg depicted, can support a sitting person, can support all of a prone, and semi-prone, person, can support other animate beings, and can support various inanimate objects. Specific details of the chamber, the beads, the moving means, the motions, and any lubricating fluid can be determined by the specific use of the support product.