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1.发明授权
公开(公告)号：US5857749A
公开(公告)日：1999-01-12
申请号：US654102
申请日：1996-05-28
CPC分类号： A47C7/022 , A61G5/1043 , A61G5/1045 , A61G5/1091
摘要： A seat assembly (21) for a wheelchair including a relatively rigid seat base (12) of substantially uniform thickness with an upwardly facing contoured top surface (14) and a cushion assembly mounted on the seat base. The cushion assembly includes a relatively soft foam member (30) substantially covering the seat base (12) for localized deformation of the foam member and for communication of the influence of contours on the seat base (12) through the foam member (30) to the user. In the preferred form, a flexible pouch (40) having a viscous fluid-like material contained therein is positioned in a recess (38) in the foam member (30) in the area of the user's ischial tuberosities and coccyx, and a water-impervious, flexible elastomeric envelope (50) completely surrounds the foam member (30) and the fluid-containing pouch (40). The fluid pouch (40) has a size greater than the plan area of recess (38) in the foam member (30) and is placed in a semi-collapsed condition in the recess so as to be displaceable without hammocking. Additionally, elastomeric envelope (50) has a sheet area greater than the area of the semi-collapsed fluid pouch (40) to ensure that the envelope (50) does not hammock under the user's weight. Finally, a hydrophobic cover (60) can be mounted over the cushion assembly and to the seat base (12). A method of supporting a user on a wheelchair seat assembly is also disclosed.
摘要翻译： 一种用于轮椅的座椅组件（21），其包括具有基本均匀厚度的相对刚性的座椅底座（12），具有向上的轮廓顶部表面（14）和安装在座椅底座上的缓冲组件。 衬垫组件包括基本上覆盖座椅基座（12）的相对软的泡沫构件（30），用于泡沫构件的局部变形，并且用于通过泡沫构件（30）将座椅基座（12）上的轮廓的影响传递到 用户。 在优选形式中，其中容纳有粘性流体状材料的柔性袋（40）位于使用者坐骨结节和尾骨的区域中的泡沫构件（30）中的凹部（38）中， 不透水的柔性弹性体外壳（50）完全包围泡沫构件（30）和流体容纳袋（40）。 流体袋（40）具有大于泡沫构件（30）中的凹部（38）的平面面积的尺寸，并且在凹部中以半折叠状态放置，以便能够不起吊床地移动。 此外，弹性体外壳（50）具有大于半塌陷流体袋（40）的面积的片区域，以确保信封（50）在使用者的重量下不吊床。 最后，可以将疏水盖（60）安装在衬垫组件和座椅底座（12）上。 还公开了一种在轮椅座椅组件上支撑使用者的方法。
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公开(公告)号：US5836654A
公开(公告)日：1998-11-17
申请号：US915351
申请日：1997-08-20
CPC分类号： A47C7/022 , A61G5/1043 , A61G5/1045 , A61G5/1091
摘要： A seat assembly (21) for a wheelchair including a relatively rigid seat base (12) of substantially uniform thickness with an upwardly facing contoured top surface (14) and a cushion assembly mounted on the seat base. The cushion assembly includes a relatively soft foam member (30) substantially covering the seat base (12) for localized deformation of the foam member and for communication of the influence of contours on the seat base (12) through the foam member (30) to the user. In the preferred form, a flexible pouch (40) having a viscous fluid-like material contained therein is positioned in a recess (38) in the foam member (30) in the area of the user's ischial tuberosities and coccyx, and a water-impervious, flexible elastomeric envelope (50) completely surrounds the foam member (30) and the fluid-containing pouch (40). The fluid pouch (40) has a size greater than the plan area of recess (38) in the foam member (30) and is placed in a semi-collapsed condition in the recess so as to be displaceable without hammocking. Additionally, elastomeric envelope (50) has a sheet area greater than the area of the semi-collapsed fluid pouch (40) to ensure that the envelope (50) does not hammock under the user's weight. Finally, a hydrophobic cover (60) can be mounted over the cushion assembly and to the seat base (12). A method of supporting a user on a wheelchair seat assembly is also disclosed.
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