Yi Seed Medical Treatment with liquid Pressure cylinders and with The liquid Pressure Gang Medical Treatment, The liquid Pressure cylinders include:One pedestal, there are Yi Ge Open Off and a Ge Xian Liu Open Off The Open Off Department for controlling the portions The pedestals Inner Pressure power in The pedestal weeks Edge mono- Side Let, flows of the The Xian Liu Open Off The As to limit liquid Pressure oil, mono- first outer tubes of The pedestal Inner Tao Let, first outer tube Inner Bu Tao Let have one second outer tube, and the portions Top of mono- Huo Sai Rod, The Huo Sai Rod of the second outer tube Inner Tao Let abut what bed board. And this Chong Zuo Medical Treatment include liquid Pressure cylinders described in an at least GeIt is gone up and down by three Festival two-period forms of an at least liquid Pressure cylinders, the effective height of bed board is enabled to reduce.一種醫療床用之液壓缸以及具有該液壓缸的醫療床,該液壓缸包含:一底座,該底座周緣一側設有一個開關及一個限流開關,該開關係供控制該底座內部壓力,該限流開關則為用以限制液壓油的流量,該底座內套設一第一外管,第一外管內部套設有一第二外管,第二外管內套設一活塞桿,該活塞桿的頂部抵接於床板。且本創作的醫療床包含至少一個所述的液壓缸;借助至少一液壓缸的三節二段式升降,令床板的有效高度降低。