Patent ID: 8728089
Filing Date: 2014-05-20
Classification: A61B

Abstract:
1. An endoscope treatment instrument comprising: a flexible transmitting member which is inserted into an outer sheath so as to retract and advance with respect to the outer sheath; a treatment portion that is attached to a distal end of the transmitting member; and an actuator which is attached to a proximal end of the transmitting member and is for operating the treatment portion, wherein, the endoscope treatment instrument is designed to transmit an action of the actuator to the treatment portion via the transmitting member, and wherein the transmitting member is configured by connecting a first coil sheath having a first structure including a multiple layer coil for improving a rotation follow-up property around a longitudinal axis of the transmitting member, and a second coil sheath having a second structure including a multiple strand coil for improving the rotation follow-up property around the longitudinal axis, the first coil sheath is connected on the treatment portion, the second coil sheath is connected on a proximal end of the first coil sheath, the first coil sheath has a higher flexibility than the second coil sheath by being provided with the first structure, and the second coil sheath has a higher response to move in an advance or retract direction than the first coil sheath by being provided with the second structure.