Surgery – Truss – Pad
Patent
1987-11-02
1989-04-04
Hindenburg, Max
Surgery
Truss
Pad
128772, A61B 1000
Patent
active
048176303
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 tampering 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 outer sheath of the control cable.
REFERENCES:
patent: 2118631 (1938-06-01), Wappler
patent: 3552384 (1971-01-01), Pierie
patent: 3840003 (1974-10-01), Komiya
patent: 3964468 (1976-06-01), Schulz
patent: 4178810 (1979-12-01), Takahashi
patent: 4245624 (1981-01-01), Kemiya
patent: 4646751 (1987-03-01), Maslanka
patent: 4682607 (1987-07-01), Vaillanwart et al.
Schintgen Jean-Marie
Zeitoun Bruno
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