Patent ID: 7625361
Filing Date: 2009-12-01
Classification: A61J

Abstract:
1. A catheter kit for a fistula, comprising: a catheter which percutaneously replenishes a nutrient or a drug solution into stomach of a patient from outside a body of the patient; an obturator; and an external cylinder, wherein the catheter has a tube extending along a wall surface of a fistula and in an interior thereof a nutrient passage for introducing a nutrient or a drug solution into the stomach from outside a body, a non-balloon-type internal indwelling part which is provided at a tip part of the tube, is in the projected state where a diameter of the internal indwelling part is expanded outwardly in a radial direction of the tube, in which a diameter thereof is reduced from the projected state by action of an external force with an obturator, and which is indwelled in the stomach in the state of embedment in the body, an extracorporeal fixing part which is provided at a rear end of the tube and is projected in a radial direction of the tube, and a communicating pore which is provided at a tip part of the internal indwelling part and is for making a guidewire passage of the obturator communicate with an interior of the stomach from outside the body, the obturator is evulsibly engaged with the catheter until it abuts against the internal indwelling part, and has the guidewire passage which is provided from a tip thereof to midway and through which a guidewire is passed, and an operating part which is provided at a rear end thereof and transmits the external force to the internal indwelling part, and a rear end part of the guidewire passage and the operating part are arranged in the isolated state, and the external cylinder is evulsibly engaged with the tube of the catheter and has an external circumferential surface shape on a tip side, the external circumferential surface shape has an external diameter smaller than an internal diameter of the tube such that the external diameter of the external circumferential surface shape is fitted to the internal diameter of the tube substantially without a gap along an entire length of the tube and regulates deformation of the tube in a longitudinal direction of the tube, and the external cylinder has an obturator passage with the obturator is slidably engaged.