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您请求的操作仅限于组中的用户:坐垫分类有一系列的分类系统来描述坐垫，最著名的是由大卫·霍布森提出的按用户需求分类。虽然不太为人所知，但其他分类方法提供了与建筑材料、缓冲垫的不同功能及其防止压疮的能力有关的有用信息。技术与干预模式管理机构(AETMIS)。Postural-support设备。francois Pierre Dussault报道。(AETMIS 03-07)。 ===按用户需求分类===此分类由美国匹兹堡大学康复工程中心的David A. Hobson提出[Smith and Leslie, 1990]。它将psd分为三类，主要是根据不同用户群体的需求来定义的，即:#提供姿势支持和补偿变形(脑运动障碍患者)。平衡压力和保持姿势(脊髓损伤患者，如脊柱裂、脊髓损伤)。#改善舒适度和姿势(多重损伤者和老年人)。 === Classification by Function === Staarink developed a function-based classification of seat and back cushion parameters. Staarink HA. Sitting Posture, Comfort and Pressure: Assessing the Quality of Wheelchair Cushions. 1995https://repository.tudelft.nl/islandora/object/uuid:c71e326e-f0a6-47d7-a641-6fe41e82c6c7/ These functions consider; # Seated Position; Quality of Pressure Distribution, Suppleness of the Surface, etc; # Moisture and Heat; Moisture and Heat Control Properties; # Action of Sitting In and Getting Out of the Wheelchair; Indentation in the Sacral, Frontal and Lateral Regions, Friction, Puckering, etc; # Transport (weight, size, portability, etc.). # Maintenance; Textile Cover Washability, Nontextile Cover Cleanability, Odor Resistance, etc; # Durability; The Cover and Cushion, Wear Resistance; # Reliability; Fill-ratio Sensitivity, Sensitivity to Positioning, etc; # Safety and Fire Resistance. === Classification by Construction Material === Most often, seat and back cushions are classified according to their shape and constituent material. From the standpoint of materials, cushions can be divided into three categories: # Foam Cushions; # Fluid-filled Cushions (Air, Water, Elastomer Gels and Viscous Liquids); # Hybrid Models, These cushions can be static or dynamic. Fluid-filled and foam cushions are static devices designed to even out or distribute pressure on the pelvic contact surface. Dynamic cushion models are based on the principle that high local pressure can be tolerated as long as the duration of contact does not exceed certain pre-established limits. A few applications of this principal have been attempted. For example, there is, in essence, a mechanical model and a model consisting of bellows-type air cells.

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