Endoscope

Details Endoscope Endoscope

1991-02-14

1993-01-19

Hirsch, Paul J.

Surgery

Truss

Perineal

A61B 100

Patent

active

051799340

ABSTRACT:
An endoscope comprises an insertion section, and this insertion section has a distal end portion, a proximal end portion, and a bendable portion located between the distal and proximal end portions. A fluid-pressure actuator is coupled to the insertion section, so as to bend the bendable portion. The fluid-pressure actuator is made up of an extensible body and an expansion-restricting member. The extensible body defines an internal space and has an extension axis along which it extends or contracts. The expansion-restricting member causes the extensible body to extend in the direction of the extension axis when a fluid is supplied into the internal space, and causes the extensible body to contract in the direction of the extensible axis when the fluid is discharged from the internal space. The bendable portion of the insertion section is bent in accordance with the extension or contraction of the extensible body.

REFERENCES:
patent: 4794912 (1989-01-01), Lia
patent: 4832473 (1989-05-01), Ueda
patent: 4890602 (1990-01-01), Hake
patent: 4962751 (1990-10-01), Kravter
patent: 5014515 (1991-05-01), Kravter
patent: 5018506 (1991-05-01), Danna et al.

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