Patent ID: 7435212

Claim:
An improved artificial insemination device with an inner catheter for animals, having a catheter tube, a first nozzle, an inner catheter, a second nozzle and a connector; the nozzle being assembled at the front end of the catheter tube, the inner catheter being movably installed inside the catheter tube, the second nozzle being assembled at the front end of the inner catheter, and the connector being installed posterior to the catheter tube for the insertion of an insertion tube of semen dispenser, said semen dispenser being a bag or syringe comprising; a positioning stop member being mounted at the rear end of the inner catheter that allows the second nozzle to be exposed outside the first nozzle for a length equivalent to the set distance between the positioning stop member and the rear end of catheter tube when the inner catheter is pushed inward; a thin flexible tube made in smaller diameter than the lumen of inner catheter has its rear end secured to the second nozzle and its open front end inversely inserted into the lumen of the inner catheter; when the rear end of the inner catheter is pushed inward, the positioning stop member thereon moves a set distance and checks the rear end of the catheter tube, while the second nozzle extends outside the nozzle for a length based on the distance the inner catheter is advanced and reaches the cervical tract of an animal; when semen is squeezed in from the rear end of the inner catheter, the thin flexible tube unfolds outward gradually from a guide hole of the second nozzle, extends to uterus or its vicinity along the cervical tract, and deposits the semen into the uterus.