| 摘要 |
<p>An artificial insemination and embryo transfer device comprises an elongate hollow tube (30), and a hollow straw (38) containing a reproductive organism therein and fitted in the elongate tube (30). A flexible tip (34) is secured to an end of the elongate tube (30) and engaged with the straw (38). The tip (34) has a passage (52) in communication with the straw (38) and a conical portion (48) adapted to smoothly pass it through a cervical canal of a female subject. A piston rod (40) is slidably mounted in the elongate tube (30) and constructed to enter into the straw (38) so as to discharge the reproductive organism contained in the straw (38) though the passage (52) of the tip (34) by its axial advancement. A locking element is disposed between the elongate tube (30) and the piston rod (40) for restraining a free axial mouvement of the piston rod within the elongate tube (30). A first enclosure (102) is inserted around the elongate tube (30) so as to protect the elongate tube (30) against contamination from infectious materials in the cervical canal during the passing of the device through the cervical canal. A second enclosure (44) surrounds the tip (34) and the first enclosure (102) for preventing them from being contaminated from infectious materials in a vaginal canal during the insertion of the device into the vaginal canal.</p> |
