A front mass of a vibration generating unit included a flange portion supported, and a block portion provided on a proximal side with respect to the flange portion. A distal end of the element unit abuts on a proximal end of the block portion. Ultrasonic vibration generated in a piezoelectric element is transmitted, thereby vibrating the front mass in a predetermined frequency region where a referential vibration anti-node, which is one of vibration anti-nodes located on the proximal side with respect to the flange portion, is located at a boundary position between the block portion and the element unit or in the vicinity of the boundary position.

A system and method for improving installation of a prosthesis. Devices include prosthesis installation tools, prosthesis assembly tools, site preparation systems, and improved power tools used in implant site preparation, the tools including a secondary motion that preferably includes an ultrasonic vibration.

A surgical treatment apparatus includes a treatment portion unit; at least one operation portion provided in the treatment portion unit that is movable in response to an operation of an operator; a detection subject portion provided in the operation portion; a gripping portion that is detachable and attachable relative to the treatment portion unit; a non-contact type detection portion that is provided in the gripping portion separately from the operation portion and is capable of detecting an operation of the detection subject portion in accordance with the operation of the operation portion; an energy supply portion provided within the gripping portion, that supplies energy to the treatment portion; and a driving device connected to the gripping portion, that supplies energy to the energy supply portion in accordance with a detection result of the detection portion.

The present invention relates to an ophthalmic knife and methods of its use for treatment of various conditions including eye diseases, such as glaucoma, using minimally invasive surgical techniques. The invention relates to a multi-blade device for cutting the tissues within the eye, for example, a trabecular meshwork (TM).

A medical device and a method of operating the same are provided. In a method of operating a medical device for ultrasonic treatment, the medical device including an ultrasonic instrument having a vibration transmission member that vibrates ultrasonically, a power source configured to supply electric energy to the ultrasonic instrument, and a processor including a control unit operably connected to the power source, the method includes: controlling supply of the electric energy to the ultrasonic instrument, obtaining a temperature value related to a temperature of the vibration transmission member, the vibration transmission member being separate from a transducer, and controlling the power source to reduce or stop the supply of electric energy of the power source based on the rate of change of the temperature value.

A medical apparatus includes a first clamp portion; a pivot shaft; a second clamp portion rotatable around the pivot shaft, and movable between an opened position in which the second clamp portion is distant from the first clamp portion, and a closed position in which the second clamp portion is adjacent to the first clamp portion; and an electrode member provided on the second clamp portion, and opposed to the first clamp portion, the electrode member forming a clearance in cooperation with the first clamp portion in the closed position, the clearance in a second position distant from the pivot shaft being smaller than the clearance in a first position adjacent to the pivot shaft, to adjust holding pressure.

An insert for use with a vibrating surgical tool has a proximal end for mounting to the vibrating surgical tool and a shaft extending from the proximal end. A head is mounted to the shaft, is curved along the longitudinal axis, and the terminal end thereof defines an edge for disposing against an incision between bone and periosteum. A passage is formed through the shaft for water to be forced through the passage and out of apertures formed on opposite sides of the insert. The edge is formed on the terminal end of the head, which is formed on a curve from one lateral side to an opposite lateral side. The edge extends from a front face to a tapered rear surface. A front face of the head forms an angle with a longitudinal axis of the shaft.

A system and method for improving installation of a prosthesis, particularly an acetabular cup. The system and method may include implementation of a constant velocity relative motion between a prosthesis and an installation site. For example, an installation system may be fixed relative to the installation site, with the prosthesis fixed into an initial position. The prosthesis is moved at constant speed (i.e., with minimal if any acceleration or applied impulses) relative to the installation site. That is, one or both of the prosthesis or the installation site may be in motion. Resistive forces to installation of a prosthesis may thus be reduced by maintaining the prosthesis constantly in motion relative to the installation site. Securing a processing/implanting tool directly to the installation site may offer advantages.

An ultrasound transducer device can include an ultrasound transducer, and first electrodes that abut second electrodes. Each first electrode can have an annular shape about a rotation axis of the ultrasound transducer device. The first electrodes can be annular and can each have different diameters. The device can also include first support members that includes a support base and first deformation portions, and each first deformation portion can protrude from the support base along the rotation axis. The first deformation portions can be annular and can each have different diameters.

A surgical instrument includes a transducer configured to produce vibrations at a predetermined frequency. An ultrasonic end effector extends along a longitudinal axis and is coupled to the transducer. The ultrasonic end effector comprises an ultrasonic blade and a clamping mechanism. A controller receives a feedback signal from the ultrasonic end effector and the feedback signal is measured by the controller. A lumen is adapted to couple to a pump. The controller is configured to control fluid flow through the lumen based on the feedback signal, and the lumen is located within the ultrasonic end effector.