Olympus Corporation

Olympus Medical Systems Corporation

Minoru Katsumata

Yasuhiro Maeda

Keisuke Nagao

Hiroshi Ashiba

Treatment device for ultrasonic treatment and high frequency treatment procedure is equipped with an ultrasonic transducer including piezoelectric elements converting electrical power into ultrasonic vibrations. The treatment device includes a transmission rod with a treatment probe and jaw for clasping objects. The transmission rod includes one or more features for damping, to minimize or prevent excess vibrations and to, among other things, decrease frictional heat caused by the friction between the damping features and the transmission rod arising from attenuating the ultrasonic vibrations.

Treatment device with damping feature

An energy treatment device includes a sheath including a hollow portion, a fixed handle provided at a proximal end of the sheath, a probe provided in the hollow portion, a movable handle including a jaw having a recessed portion along a rotation axis of the movable handle extending in a direction orthogonal to the central axis, a metal member provided at a position including the rotation axis, and a preventing member which prevents the metal member from falling out from its position. The sheath extends along a central axis of the energy treatment device and includes an attaching portion by which the movable handle is attached to a position offset from the central axis, the metal member is provided around the rotation axis such that the jaw is rotatable with respect to the sheath, and the prevention member is fixed to the recessed portion.

Energy treatment device

An energy treatment device includes a movable handle including a jaw and a first through hole, an elongated member, and a sheath including a hollow portion and a second through hole, wherein the hollow portion is configured to receive the elongated member. The second through hole is configured to extend so as not to overlap with the hollow portion. The movable handle is configured to rotate about an axis which is configured to pass through the first through hole and the second through hole such that the jaw is rotatable with respect to the sheath, and (D+D)/2&#x3c;Lis satisfied, where Dis a diameter of the hollow portion, Dis a diameter of the first through hole, and Lis a distance between a central position of the hollow portion and a central position of the first through hole in an opening/closing direction of the jaw.

An energy treatment device including a movable handle having a jaw and a first through hole, and a sheath having a hollow portion and a second through hole, wherein the hollow portion is configured to receive an elongated member. The second through hole is configured to extend so as to eliminate an overlap with the hollow portion, and the movable handle is configured to rotate about an axis configured to pass through the first through hole and the second through hole such that the jaw rotates with respect to the sheath.

A treatment device includes a longitudinal probe, a distal end portion, a sheath, a fixed handle, a movable handle, a jaw side through hole portion that is provided in the movable handle and formed between a finger placing portion and a jaw, a sheath side through hole portion that is provided in the sheath and provided at a position at which the sheath side through hole portion does not overlap with the hollow portion; and an opening/closing axis member. The opening/closing axis member is inserted in the jaw side through hole portion and the sheath side through hole portion to openably and closably attach the movable handle to the fixed handle.

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Fuchu, Japan

Minoru Katsumata