Antenatal cell extracting device and method

Details Antenatal cell extracting device and method Antenatal cell extracting device and method

1977-05-05

1980-03-25

Michell, Robert W.

Surgery

Truss

Pad

A61B 1000

Patent

active

041945131

ABSTRACT:
This application discloses an antenatal cell extracting device comprising a thin, flexible, plastic tube adapted for cervical insertion in a human female. A flexible closure is provided at the proximal end of the plastic tube, and passing through the flexible closure, the plastic tube and the distal end of the tube is a plunger. A valve in the form of a smooth ball, the diameter of which is greater than the diameter of the tube, is fixed to the end of the plunger, and, upon reciprocating movement of the plunger with reference to the tube, the valve is caused to open and close. Means are provided for causing fluid to flow through the tube when the valve is opened, such means, preferably taking the form of a syringe connection to the flexible closure.

REFERENCES:
patent: 396754 (1889-01-01), Mayfield
patent: 2156522 (1939-05-01), Bowmer
patent: 3173414 (1965-03-01), Guillont
patent: 3438366 (1969-04-01), Kariher et al.
patent: 3636940 (1972-01-01), Gravlee
patent: 3777743 (1973-12-01), Binard et al.
patent: 3851647 (1974-12-01), Monestere et al.
patent: 3861393 (1975-01-01), Durand
"Fetal Sex Prediction by Sex Chromation of Chorionic Villi Cells During Early Pregnancy", Chin. Med. Jrnl. 1(2):1(7-126, Mar. 1975.
Langman, Jan "Medical Embryology", Williams & Wilkins, Baltimore, 1969 pp. 30-33, 40-41, 44-45, 69-83.

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