A surgical instrument includes a housing having an elongated body extending distally therefrom. The elongated body defines a first articulating portion and a second articulating portion. The elongated body defines a lumen therein. An end effector is supported at a distal end portion of the elongated body. A flexible waveguide extends through the lumen of the elongated body. A proximal end portion of the flexible waveguide connects to an ultrasonic transducer. A distal end portion of the flexible waveguide is connected with the end effector. the flexible waveguide defines a first articulating portion having a narrower thickness than a thickness of other portions of the flexible waveguide and a second articulating portion having a narrower thickness than a thickness of other portions of the flexible waveguide.

A method of treating a calculi mass can include using an ultrasonic probe to produce acoustic energy and fragment the mass. The method can include varying the frequency at which fragmentation occurs to treat the mass with a resonant frequency. The ultrasonic probe can have a distal tip for contact with the mass, where the tip has a morphology for concentrating stress on the mass. The ultrasonic probe can have two or more ultrasonic horns to allow for higher voltage and power levels.

A surgical instrument includes a housing having an elongated body extending distally therefrom. The elongated body defines a first articulating portion and a second articulating portion. The elongated body defines a lumen therein. An end effector is supported at a distal end portion of the elongated body. A flexible waveguide extends through the lumen of the elongated body. A proximal end portion of the flexible waveguide connects to an ultrasonic transducer. A distal end portion of the flexible waveguide is connected with the end effector. the flexible waveguide defines a first articulating portion having a narrower thickness than a thickness of other portions of the flexible waveguide and a second articulating portion having a narrower thickness than a thickness of other portions of the flexible waveguide.

Disclosed is a surgical instrument that includes a rotatable shaft having an articulation section and an ultrasonic waveguide disposed within the shaft. The ultrasonic waveguide is configured to articulate at the articulation section. The ultrasonic waveguide is disposed within the shaft. A rotatable clamp arm is located distal of the articulation section of the rotatable shaft. The rotatable clamp arm is configured to rotate independently of the rotatable shaft distal of the articulation section.

A surgical handpiece nosecone having an end overmold portion and/or an internal overmold portion. The end overmold portion is located at an end of the nosecone and compressed between the surgical handpiece housing and nosecone. The internal overmold portion is positioned radially about the nosecone on the inner surface to provide a fluid tight seal that prevents ingress of irrigation fluid into the housing.

A method for generating a mechanical wave, including generating a high amplitude mechanical pulse; coupling the mechanical pulse in a proximal end of a transmission member; propagating the mechanical pulse into the transmission member from the proximal end and a distal end thereof; and transmitting the mechanical pulse at the distal end.

A waveguide rod for an ultrasonic scalpel having a relatively desirable amplitude and frequency comprises a proximal gain structure, a distal gain structure, an intermediate structure, and a frequency adjustment structure. The proximal gain structure and the intermediate structure are connected in a position near an antinode of longitudinal vibration of the waveguide rod through a proximal side gain step. The distal gain structure and the intermediate structure are connected in a position near an antinode of the longitudinal vibration of the waveguide rod through a distal side gain step. The intermediate structure comprises N (N>0, and N is an integer) gain holding structures that are connected two by two in a position near an antinode of the longitudinal vibration of the waveguide rod through an intermediate gain step. X (X>0, and X is an integer) frequency adjustment structures exist on the gain holding structure. The waveguide rod provides an ultrasonic scalpel with a relatively large blade amplitude and also enables the ultrasonic scalpel to work at a stable and suitable vibration frequency, so that the ultrasonic scalpel can cut human tissue efficiently.

The present invention provides methods and devices for treating endovascular disease. Vibrational energy is delivered to change compliance and increase permeability at the treatment area. To improve clinical outcomes, one or more therapeutic drugs may be delivered to the treatment area.

A method for generating a mechanical wave, including generating a high amplitude mechanical pulse; coupling the mechanical pulse in a proximal end of a transmission member; propagating the mechanical pulse into the transmission member from the proximal end and a distal end thereof; and transmitting the mechanical pulse at the distal end.

The present invention provides methods and devices for treating endovascular disease. Vibrational energy is delivered to change compliance and increase permeability at the treatment area. To improve clinical outcomes, one or more therapeutic drugs may be delivered to the treatment area.