Fertilized egg or sperm injector

An injector for injecting a fertilized ovum(ova) or a sperm(s) for artificial insemination into a uterine body, comprising:

• a guide pipe for insertion into a uterine body,
• an injection pipe, which is inserted into the guide pipe, and has a length longer than the guide pipe, and
• a nozzle connected to a frontal end of the injection pipe,
• wherein the injection pipe comprises a flexible first pipe section constituting a frontal side of the injection pipe, and a second pipe section being more rigid than the first pipe section and constituting a rear side of the injection pipe,
• wherein a cylindrical connector is connected with a rear end of the second pipe section,
• wherein the injection pipe comprises:
• a flexible tube having a length longer than the guide pipe, and being inserted into the guide pipe;
• and a rigid sleeve which is arranged so that an outside of a rear part of the tube is covered with the rigid sleeve, leaving a frontal part of the tube in an exposed state, and whose rigidity is higher than the tube,
• wherein the first pipe section is constituted by a portion of the tube protruding from the rigid sleeve at a frontal side, and the second pipe section is constituted by the rigid sleeve and a portion of the tube positioned inside the rigid sleeve,
• wherein the nozzle comprises a stopping part having an outer diameter size larger than an inner diameter size of the guide pipe, and a connecting cylindrical part connected to the frontal end of the injection pipe on a rear side from the stopping part,
• wherein the connecting cylindrical part is inserted into the injection pipe at a connection part between the injection pipe and the connecting cylindrical part, and
• wherein at least either one of a protruding part(s) that bite(s) into an inner surface of the injection pipe and a recessed part(s) that is(are) bitten into by the injection pipe is formed on an outer surface of the connecting cylindrical part.