Steerable flexible microsurgical instrument with rotatable clevi

Details Steerable flexible microsurgical instrument with rotatable clevi Steerable flexible microsurgical instrument with rotatable clevi

1994-01-05

1995-08-08

Pellegrino, Stephen C.

Surgery

Instruments

Forceps

128751, A61B 1728

Patent

active

054394783

ABSTRACT:
A steerable flexible microsurgical instrument is provided with a rotatable clevis. The instrument includes a flexible coil, a flexible pull wire extending through the coil, a clevis which is rotatably coupled to the distal end of the coil, a handle coupled to the proximal end of the coil, and end effectors coupled to the clevis and the pull wire. The clevis is coupled to the distal end of the flexible coil by a bushing which allows axial rotation of the clevis relative to the coil. The pull wire is formed from torsionally obdurate material and is coupled at its distal end to the end effector and at its proximal end to a movable part of the handle. The handle is provided with mechanism for rotating the pull wire relative to the coil and a mechanism for translating the pull wire relative to the coil. Translation of the pull wire relative to the coil moves the end effector relative to the clevis and rotation of the pull wire relative to the coil rotates the clevis and end effector relative to the coil.

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patent: 5281230 (1994-01-01), Heidmueller

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