Method of effecting embryo transplant

Details Method of effecting embryo transplant Method of effecting embryo transplant

1995-05-09

1996-09-24

Green, Randall L.

Surgery

Means for introducing or removing material from body for...

Material introduced into and removed from body through...

604 55, 604171, 600 34, A61M 3100

Patent

active

055586368

ABSTRACT:
This invention is directed to a method of effecting the non-surgical transplant of embryos into the uterus of an animal. The method involves the use of a long tubular gripping instrument having an open forward end and an external gripping formation generally adjacent its forward end. A probe with a long tubular body having an open forward end extends axially inside the gripping instrument. A probing member projects in a generally non-axial direction from the probe body generally adjacent its forward end. The method comprises the steps of inserting the gripping instrument, forward end first, into a cervix of the uterus, and establishing a grip between the walls of the cervix and the external gripping formation on the gripping instrument. While maintaining said grip, the gripping instrument is pulled in a rearward direction to straighten the cervix. At the same time the the probe is pushed in a forward direction to advance the probing member through the cervix to a position generally adjacent a body of the uterus. An embryo carrier is then placed inside the probe body and moved to an embryo release position for release of embryos from the carrier into the uterus.

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C. Polge, B. N. Day, "Pregnancy Following Non-surgical Egg Transfer in Pigs", Apr. 15, 1968, published in The Veterinary Record.
M. M. Sims and N. L. First, "Nonsurgical Embryo Transfer in Swine", 1987 p. 386, published in the Journal of Animal Science, vol. 65, Supplement 1.
W. Hazeleger, P. Jenneskens and B. Kemp, Non-surgical Transfer of Porcine Blastocyst, Jan., 1995, p. 232, published in the Theriogenology, an International Journal of Animal Reproduction, vol. 43, No. 1.
"Reproduction Resources Artificial Breeding Equipment and Veterinary Supplies", no date, pp. 1A, 1B, 1-17, 17A (admitted prior art).
H.-D. Reichenbach, J. Modl, G. Brem, "Piglets Born After Transcervical Transfer of Embryos into Recipient Gilts", Veterinary Record (1993) 4 pages.
J. M. Galvin, D. B. Killian and A. N. V. Stewart, "A Procedure for Successful Nonsurgical Embryo Transfer in Swine", dated 1994, pp. 1280-1289.

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