A portable catheter comprises a tube body, a check valve and a cover sleeve； the tube body has a head end, a tail end and a body connected between the head end and the tail end, and the end surface of the head end has a combination The trough, the outer surface of the tail end is recessed at least with a guiding hole, and the inner portion of the body portion is axially formed with a urethra connecting the coupling groove to the guiding hole, and the bottom end of the coupling groove extends inwardly. The trough is formed in the inside of the body segment to form a capsule chamber which is annular around the periphery of the transurethral to the outer surface. The axial direction of the body segment has an infusion channel connecting the accommodating groove to the capsule chamber, and the check valve is disposed in the tube body. In the accommodating groove, the check valve can reciprocate between a reversible position and a non-reverse position, the cover sleeve has a hollow sleeve body and a cover body, the hollow sleeve body has a joint end at one end, and the other end is a A cover end, the joint end of the hollow sleeve is coupled to the joint groove of the tubular body, and the cover body is detachably coupled to the cover end of the hollow sleeve to close the ureter.一種攜帶型導尿管，包含有一管體、一逆止閥及一蓋套；管體具有一頭端、一尾端及一連接於頭端與尾端間之身段，頭端之端面具有一結合槽，尾端之外表面上往內凹陷有至少一導尿孔，身段之內部軸向形成有一連通結合槽至導尿孔間之輸尿道，頭端之結合槽底壁往內延伸有一容置槽，身段之內部形成有一環繞在輸尿道外圍至外表面間呈環狀之囊室，身段之軸向具有一連通容置槽至囊室間之輸液道，逆止閥設於管體之容置槽中，該逆止閥能夠在一可逆位置至一止逆位置間進行往復之啟閉，蓋套具有一中空套體及一蓋體，中空套體一端為一結合端，另一端為一蓋合端，中空套體之結合端係結合於管體之結合槽內，蓋體則以能夠拆離的方式結合於中空套體之蓋合端上，以封閉輸尿道。
