Device for holding medical instrumentation sensors at and upon t

Details Device for holding medical instrumentation sensors at and upon t Device for holding medical instrumentation sensors at and upon t

1995-08-08

1998-12-22

Manuel, George

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

600588, 600591, A61B 800

Patent

active

058511881

ABSTRACT:
A flexible elastomeric annulus-shaped membrane having a shape-retentive memory and exerting a force so as to assume and to maintain a predetermined closed-loop geometric shape, normally a circle, fits circumferentially about the cervix os of a human female so as to hold and retain medical instrumentation probes, preferably two opposed wire-connected ultrasonic transducers of a real-time transit-time ultrasonic monitor of cervical dilatation and effacement. The annular membrane may optionally extend as a tube downwards in the vaginal canal, in the manner of a female diaphragm, as to shield the wires from the walls of the vagina. The membrane expands and contracts with such cyclical variation in the dilatation and effacement of the cervix os as occurs from the earliest onset of labor until imminent childbirth. The membrane holding the transducer probes of an ultrasonic cervimeter may be situated in place about the cervix os for prolonged periods ranging to several months, or may be placed only at the onset of full labor, for monitoring purposes.

REFERENCES:
patent: 4200090 (1980-04-01), Drobish
patent: 4517970 (1985-05-01), Goepp et al.
patent: 4589880 (1986-05-01), Dunn et al.

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