Cushion for preventing pressure sore

摘要

The present invention relates to a cushion for preventing pressure sore. The cushion for preventing pressure sore includes an air cell layer, an air passage layer, a base layer, and a plurality of air ducts. The air cell layer has a plurality of air cells; the air cell layer is divided into at least four air cell zones. Air cells in each air cell zone are in communication with each other, but air cells in any two adjacent air cell zones are not in communication with each other; the air passage layer is under the air cell layer and has a plurality of air passages therein. Each air passage is in connection and communication with at least one of the air cell zones; the air passage layer and the air cell layer are disposed on the base layer; an end of each air duct is in communication with a corresponding air passage, and the other end extends out of the cushion and is provided with a joint; and each air duct has a respective valve. The cushion for preventing pressure sore according to the present invention can intermittently exert pressure over human buttocks, thereby effectively preventing pressure sores.

主权项

1. A cushion for preventing pressure sore, comprising:
an air cell layer, having a plurality of air cells and being divided into at least four air cell zones, air cells in each air cell zone being in communication with each other, but air cells in any two adjacent air cell zones being not in communication with each other; an air passage layer, located under the air cell layer and having a plurality of air passages therein, each air passage being connected to and in communication with at least one of the air cell zones; a base layer, the air passage layer and the air cell layer being disposed on the base layer; anda plurality of air ducts, an end of each air duct being in communication with a corresponding air passage, and the other end extending out of the cushion and being provided with a joint, and each air duct having a respective valve;
wherein the number of the air passages is less than the number of the air cell zones, and wherein the air cells in the air cell layer are organized into an A air cell zone, a B air cell zone, a C air cell zone, a D air cell zone, and an E air cell zone as arranged in an array below; the air passage layer has a first air passage, a second air passage, and a third air passage therein; the first air passage is in connection and communication with the A air cell zone and the C air cell zone, the second air passage is in connection and communication with the B air cell zone and the D air cell zone, and the third air passage is in connection and communication with the E air cell zone; the array is shown as follows:[EEEEEEEEEEEEEEEEEEEEAAAAABBBBBAAAAABBBBBAAAAABBBBBAAAAABBBBBDDDDDCCCCCDDDDDCCCCCDDDDDCCCCCDDDDDCCCCC].