A　bedridden　patient　is　someone　unable　to　leave　their　bed　due　to　physical,　medical,　or　psychological　conditions,　presenting　significant　challenges　for　body　weight　(BW)　monitoring.　Conventional　methods,　such　as　specialized　weighing　scales　or　integrated　hospital　bed　units,　are　commonly　used　but　are　space-intensive,　costly,　and　operationally　complex.　Emerging　technologies,　such　as　pressure　sensors,　show　potential　but　remain　underdeveloped　and　not　widely　accessible.　Moreover,　existing　pressure　sensors　are　not　designed　for　simultaneous　measurement　of　BW,　heart　rate　(HR),　and　respiratory　rate　(RR).　To　address　these　limitations,　we　propose　a　novel　microbend　fiber　pressure　sensor　integrated　into　an　air-mattress　system,　capable　of　simultaneously　measuring　BW,　HR,　and　RR　without　requiring　patient　movement.　The　system　leverages　air　pressure　changes　within　the　mattress　to　detect　these　parameters.　Experimental　validation　revealed　that　RR　measurements　closely　matched　manual　scoring,　with　a　low　mean　absolute　error　(MAE)　of　1.8　±　0.4　bpm.　HR　measurements　demonstrated　an　MAE　of　1.4　±　0.2　bpm.　BW　measurements　exhibited　the　MAE　of　less　than　1.0%　±　0.3　%　compared　to　electronic　scales.　This　innovative　solution　is　particularly　well-suited　for　patients　unable　to　stand　or　those　requiring　continuous　monitoring　of　dynamic　physiological　data,　offering　a　cost-effective,　compact,　and　efficient　alternative　to　conventional　methods.　©　2001-2012　IEEE.