METHOD OF OPERATING A COMBINATION ULTRASONIC / BIPOLAR RF SURGICAL DEVICE WITH A COMBINATION ENERGY MODALITY END-EFFECTOR

Smart overview of the Invention

The patent application details a surgical instrument designed to deliver multiple energy modalities to tissue via an end-effector. These modalities can be applied simultaneously, independently, or sequentially. The instrument is connected to a generator that supplies both electrosurgical energy, such as monopolar or bipolar radio frequency (RF) energy, and ultrasonic energy. This combination allows the end-effector to interact effectively with tissue, enhancing surgical precision and efficiency.

Technical Field

The focus is on end-effectors that operate with combined ultrasonic and electrosurgical systems for tissue sealing and cutting. The energy modalities can be applied based on tissue parameters or predefined algorithms. These end-effectors are adaptable for use with handheld or robotic surgical systems, enabling versatile applications in various surgical procedures.

Background

Ultrasonic surgical instruments are increasingly used for their ability to cut and coagulate tissue simultaneously, minimizing patient trauma. They employ high-frequency vibrations to denature proteins and form hemostatic seals. Electrosurgical instruments, on the other hand, use electrical energy to treat, seal, cut, or destroy tissue. The precision of these instruments is enhanced by controlling the RF energy frequency to avoid unwanted nerve and muscle stimulation.

Challenges and Improvements

A significant challenge with existing surgical instruments is the inability to control and customize energy delivery based on tissue type. The described combination energy modality end-effectors address this by improving the quality of tissue treatment, sealing, and cutting. The integration of multiple energy types allows for enhanced control and customization during surgical procedures.

Key Features

• The surgical instrument delivers at least two types of energy: ultrasonic and RF (monopolar or bipolar).
• It includes activation buttons for energy delivery and mode selection, with remote modification capabilities.
• The combination device features a clamp arm with a movable clamp jaw, compliant polymeric pad, and bipolar RF electrode.
• The ultrasonic blade is acoustically coupled to a transducer stack driven by an ultrasonic generator.
• Design elements prevent inadvertent contact between electrodes and the ultrasonic blade, ensuring safety and efficacy.