Counter-rotating ophthalmic scanner drive mechanism

摘要

An endoprobe for ophthalmic microsurgical procedures including a hand-piece including a motor, a cannula assembly coupled to the hand-piece, and a transmission system coupling the motor to the cannula assembly is provided. The cannula assembly having an outer tube and an inner tube concentric with the outer tube, each able to rotate about the longitudinal axis and having a proximal end and a distal end. The transmission system rotates the outer tube in a first direction and the inner tube in a second, opposing direction about the longitudinal axis. A method for scanning a light beam along a linear trajectory using a cannula assembly as above is also provided.

主权项

1. An endoprobe for microsurgical procedures comprising:
a hand-piece comprising a motor; a cannula assembly coupled to the hand-piece; a transmission system coupling the motor to the cannula assembly; the cannula assembly comprising: an outer tube able to rotate about a longitudinal axis; an inner tube concentric with the outer tube, able to rotate about the longitudinal axis; the outer tube and the inner tube each having a proximal end and a distal end; wherein the transmission system rotates the outer tube in a first direction and the inner tube in a second, opposing direction about the longitudinal axis; a proximal space formed between the proximal ends of the outer tube and the inner tube comprises at least a portion of the transmission system; the transmission system extending into the proximal space and being located between the inner tube and the outer tube in a radial direction; and the transmission system comprises at least one gear-assembly which couples the motor to the inner side of the outer tube and to the outer side of the inner tube.