Instrument for electro-surgical excisor for the transformation z

Details Instrument for electro-surgical excisor for the transformation z Instrument for electro-surgical excisor for the transformation z

1994-02-04

1995-04-04

Cohen, Lee S.

Surgery

Instruments

Electrical application

606 49, A61B 1739

Patent

active

054033101

ABSTRACT:
An electro-surgical instrument for excision of a tissue specimen from the transformation zone of the uterine cervix includes an elongated body member with an endocervical portion at one end, a contact portion at the other end, and a vaginal portion therebetween. A stop arm extends at a right angle to the body member at the juncture of the endocervical and vaginal portions, and a wire electrode extends diagonally between the stop arm and endocervical portion. In using the instrument, the endocervical portion is inserted through the vaginal canal and into the endocervical canal of the uterine cervix until the electrode contacts an area of the ectocervix without colposcopically evident pathology. Current is imparted to the electrode and the instrument is advanced into the endocervical canal until the stop arm abuts the ectocervix, after which the instrument is rotated one full revolution to cut a conically shaped tissue specimen from the transformation zone of the uterine cervix which is withdrawn with the instrument.

REFERENCES:
patent: 1741740 (1929-12-01), Sederholm et al.
patent: 2447169 (1948-08-01), De Sousa
patent: 4485812 (1984-12-01), Harada et al.
patent: 4834095 (1989-05-01), Miller
patent: 4846175 (1989-07-01), Frimberger
patent: 4887593 (1989-12-01), Wiley et al.
patent: 4924882 (1990-05-01), Donovan
patent: 5133713 (1992-07-01), Huang et al.

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