Mechanism for bending elongated body

Details Mechanism for bending elongated body Mechanism for bending elongated body

1988-02-09

1990-02-27

Lee, John D.

Surgery

Truss

Pad

350 9629, 128 4, G02B 2326

Patent

active

049040480

ABSTRACT:
A mechanism for bending an elongated body such as the tube of an endoscope without the use of electric elements, thereby eliminating a shock hazard. A shape-memorizing alloy is inserted into the elongated body at portions to be bent. In some embodiments, heat for causing the shape-memorizing alloy and hence the elongated body to bend is produced by light carried by an optical fiber, while in other embodiments frictional heat produced by a mechanism vibrator is employed. In some embodiments using light, a shutter arrangement is added to control the heating of the shape-memorizing alloy.

REFERENCES:
patent: 4601283 (1986-07-01), Chikama
patent: 4742817 (1988-05-01), Kawashima et al.
patent: 4753223 (1988-06-01), Bremer
patent: 4790624 (1988-12-01), Van Hoye et al.

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