FIELD: medicine.SUBSTANCE: tubular auxiliary device for catheter insertion and manipulation comprises a front opening, a rear opening and a slot opening extending along the side wall of the tubular auxiliary device, so that the first portion of the tubular accessory in an axial direction forms a solid periphery around the tubular auxiliary device, and the said second portion is provided with a slotted hole extending in the axial direction of the tubular auxiliary device. The tubular auxiliary device further comprises the first inner protrusion formed on the inside of the tubular auxiliary device in the region of the second portion provided with the said slot opening. The first inner protrusion is located along the first protrusion line extending along the inner periphery of the tubular auxiliary device substantially perpendicular to the axial direction of the tubular auxiliary device. The catheter set comprises a catheter and the aforementioned tubular auxiliary device for catheter insertion and manipulation. The catheter includes a front input portion and a rear connecting portion. The connecting portion forms a neck having a reduced cross-sectional dimension compared to the surrounding sections of the connecting portion. In the storage position, the auxiliary device is located around the connecting portion of the catheter, so that the first line of the tubular auxiliary device protrusion lies over the catheter neck, which allows the tubular accessory to be connected to the catheter with a possibility of detachment. The catheter set comprises the above-mentioned catheter kit and a package where the indicated catheter kit is housed.EFFECT: ease of use, the invention is simple and inexpensive to produce.15 cl, 5 dwgГруппа изобретений относится к медицинской технике, а именно к катетеру, и в частности катетеру со вспомогательным устройством для вставки, облегчающим манипулирование катетером. Трубчатое вспомогательное устройство для вставки катетера и манипулирования и