Patent ID: 8801731
Filing Date: 2014-08-12
Classification: A61B,Y10T

Abstract:
1. Tool for minimally invasive surgery comprising, an elongated shaft having a predetermined length, an adjustment handle manually controllable by a user's actuation thereof, a pitch direction handling part and a yaw direction handling part positioned around one end of the elongated shaft for transferring motions in pitch and yaw directions following the actuation of the adjustment handle, a pitch direction actuating part and a yaw direction actuating part positioned around the other end of the elongated shaft for operating corresponding to the operations from the pitch direction handling part and the yaw direction handling part, respectively, an end effector controllable by the pitch direction actuating part and the yaw direction actuating part, and a plurality of cables for transferring the motions from the pitch direction handling part and the yaw direction handling part to the pitch direction actuating part and the yaw direction actuating part, respectively, wherein the adjustment handle, the pitch direction handling part, the yaw direction handling part, the pitch direction actuating part and the yaw direction actuating part are disposed in a series along the elongated shaft, and wherein the pitch direction handling part comprises, a first plate and a second plate of the pitch direction handling part, the first plate and the second plate are spaced apart from each other and are disposed substantially parallel to each other, at least two adjustment gears disposed onto the first plate and at least two adjustment gears disposed onto the second plate of the pitch direction handling part, a link disposed between the first and second plate of the pitch direction handling part for enabling the two adjustment gears to intermesh, and a joint rotation axis inserted in a middle point between the at least two adjustment gears, and wherein the yaw direction handling part comprises, a first plate and a second plate of the yaw direction handling part, the first plate and the second plate are spaced apart from each other and are disposed substantially parallel to each other, at least two adjustment gears disposed onto the first plate and at least two adjustment gears disposed onto the second plate of the yaw direction handling part, and a joint rotation axis inserted in a middle point between the at least two adjustment gears, and wherein the second plate of the pitch direction handling part and the first plate of the yaw direction handling part are adjacent to each other, and the adjustment handle is physically connected to the pitch direction handling part through the first plate of the pitch direction handling part.