Endoscopic treating instrument

Details Endoscopic treating instrument Endoscopic treating instrument

1990-04-13

1991-01-08

Grieb, William H.

Surgery

Truss

Perineal

606205, A61B 100

Patent

active

049827278

ABSTRACT:
An endoscopic treating instrument having a coil sheath, and a treating portion at the distal end of the coil sheath. The coil sheath includes a distal portion having a flexible coil sheath formed by a single wire, a proximal portion having a relatively hard coil sheath formed by a plurality of wires, and an intermediate portion between the distal and proximal portions, the intermediate portion having a coil sheath of an intermediate hardness between the hardness of the coil sheaths of the distal and proximal portions. This structure can prevent the coil sheath from being broken in its intermediate portion.

REFERENCES:
patent: 3788304 (1974-01-01), Takahashi
patent: 3895636 (1975-07-01), Schmidt
patent: 4271845 (1981-06-01), Chigashige et al.
patent: 4817630 (1989-04-01), Schintgen et al.

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