Method for positioning a fluid withdrawing means by detecting lo

Details Method for positioning a fluid withdrawing means by detecting lo Method for positioning a fluid withdrawing means by detecting lo

1979-12-27

1981-07-28

Howell, Kyle L.

Surgery

Truss

Pad

128760, 128765, 1282144, 73352, A61B 1000

Patent

active

042805082

ABSTRACT:
A method for withdrawing a sample of enclosed fluid from an internal organ of a living mammal by using a temperature-sensitive probe to reliably position a fluid withdrawing means into the fluid containing organ. In particular, a method for detecting a change in temperature in the myometrium tissue during penetration of a cannula into a uterus to minimize the possibility of injury to a fetus in an amniocentesis procedure.

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"YSI Thermistor Probes", Yellow Springs Instrument Co., Inc., Scientific Div., Yellow Springs, Ohio, 45387.
"Instructions for YSI Series 500 Temperature Probes", Yellow Springs Instrument Co., Yellow Springs, Ohio, 45387.
Hill et al., Obstetrics and Gynecology, vol. 49, p. 236, 1977.
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Robinson et al., Am. J. Obstet. Gynecol., vol. 116, p. 937, 1973.
"Amniocentesis," Contemp. Ob/Gyn, vol. 5, pp. 59-64, May 1975.

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