A negative pressure stone basket and an integrated endoscopic
catheter are disclosed. The negative pressure stone basket has an outer opening and a connecting part fitted onto the area near the top of the endoscopic
catheter head. Multiple water inlet channels are provided near the inner opening of the negative pressure stone basket, and the water inlet channels are distributed circumferentially around the inner opening of the negative pressure stone basket. Water can enter the water
inlet channel through the outer opening of the water
inlet channel due to the negative pressure of the inner cavity of the negative pressure stone basket, and then enter the inner cavity of the negative pressure stone basket through the inner opening of the water
inlet channel. During
laser lithotripsy, water enters through the gap between the sheath tube and the endoscopic
catheter. The working channel of the endoscopic catheter is connected to negative pressure. The inner opening of the negative pressure stone basket is close to or close to the target stone. The
optical fiber extends from the inner opening of the working channel of the endoscopic catheter and releases energy to break the stone by touching or being near the target stone. Water continuously enters the inner cavity of the negative pressure stone basket due to the negative pressure, and the stone
powder and the
heat energy generated by the
laser are discharged to the outside of the body with the
water flow through the working channel of the endoscopic catheter.