Stretchable percutaneous renal puncture sheath

The utility model relates to the field of medical instruments, in particular to a stretchable percutaneous renal puncture sheath which comprises an inner core, an outer sleeve, a waistband and an outer sleeve fixing piece, the outer sleeve sleeves the outer side of the inner core, the waistband is worn on the waist of a patient, and the outer sleeve fixing piece sleeves the outer side of the outersleeve. The waistband is provided with a working hole which is located in the kidney of a patient and allows the outer sleeve to penetrate through, a plurality of elastic ropes are installed around the working hole, one end of each elastic rope is detachably connected with the waistband, and the other end of each elastic rope is fixedly connected with the outer sleeve fixing piece. The percutaneous renal puncture sheath can be automatically fixed outside the body of a patient, and the problem that in minimally invasive surgery of the uronephrology department, a doctor needs to always hold anouter sleeve of the percut