Retractable needle biopsy forceps and improved control cable the

Details Retractable needle biopsy forceps and improved control cable the Retractable needle biopsy forceps and improved control cable the

1986-06-03

1988-01-26

Howell, Kyle L.

Surgery

Truss

Pad

128305, A61B 1000

Patent

active

047211164

ABSTRACT:
A biopsy forceps has two cutting spoons or jaws articulated in a midportion at a common pivot which is fixed on a tubular extension at the end of a flexible control cable sheath. The ends of the jaws opposite their cutting ends are each articulated to link rods having their other ends articulated at a common pivot on the body of a needle which extends between the jaws to locate the place of taking a biopsy. The needle has a longitudinal slot which runs past the common pivot of the jaws, so that the needle is retracted as the jaws are closed by the needle body being drawn into the control cable end by a central control wire. An improved control cable sheath has its exterior ground to a smooth surface tapering down in diameter towards the end which carries the forceps. The central control wire may have its dimensional stability enhanced by wrapping it with a stainless steel coiled sheath, preferably wound in a direction opposite to the direction of winding the coiled stainless steel wire of the other sheath of the control cable.

REFERENCES:
patent: 86016 (1869-01-01), Howell
patent: 365913 (1887-07-01), Farnham
patent: 1867624 (1932-07-01), Hoffman
patent: 2034785 (1936-03-01), Wappler
patent: 2113246 (1938-04-01), Wappler
patent: 3628522 (1971-12-01), Kato
patent: 3895636 (1975-07-01), Schmidt
patent: 3943916 (1976-03-01), Vedas
patent: 4449518 (1984-05-01), Konomura et al.
patent: 4462403 (1984-07-01), Martin

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