An ultrasonic scalpel with enhanced hemostasis

Abstract

The invention discloses an ultrasonic knife with enhanced hemostasis ability, which comprises a longitudinal-torsional compound vibration ultrasonic transducer, an ultrasonic horn and an ultrasonic knife head connected in sequence from near to far, and also includes a bottom shell with a transmission The instrument box of the system, the longitudinal-torsional compound vibration ultrasonic transducer includes multi-piece thickness polarized piezoelectric ceramics between the front end cover and the middle end The polarized piezoelectric ceramics, the thickness polarized piezoelectric ceramics are used to generate longitudinal vibration, and the tangentially polarized piezoelectric ceramics are used to generate torsional vibrations. The advantage of the present invention is that the torsional vibration mode is used when coagulating blood vessels. The torsional vibration perpendicular to the tissue plane can stop bleeding faster, can be used to coagulate thicker blood vessels, and can well coagulate blood vessels with traction tension, which reduces the risk of surgery and the difficulty of operation for doctors, and can be used in surgery robot system.

Description

technical field [0001] The invention relates to the technical field of surgical instruments, in particular to an ultrasonic scalpel with enhanced hemostasis capability. Background technique [0002] At present, most of the commercialized ultrasonic scalpels adopt the longitudinal vibration working mode. The ultrasonic scalpel has a large mechanical amplitude and a strong tip cavitation effect, and can quickly remove and damage the lesion tissue when cutting tissues with no blood vessels or few blood vessels, such as fat. . However, the cutting ability and hemostatic ability of the ultrasonic knife are contradictory. When closing the blood vessel, in order to avoid the blood vessel being cut off by mistake before it is completely coagulated, it is often necessary to reduce the input power of the ultrasonic knife so that it has a smaller Mechanical amplitude, which relatively increases hemostasis by reducing cutting power. [0003] At present, the commonly used ultrasonic sc...

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Problems solved by technology

However, this method also enhances the cutting ability while improving the hemostatic ability, so it is difficult to coagulate blood vessels with traction tension, and the introduction of the oblique cutting groove leads to the reduction of the strength and fatigue resistance of the ultrasonic knife

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