محمد صابرجهرمي

Using traditional methods and tools in medical surgery causes significant damage to the tissue itself and surrounding tissues, increasing the tissue repair time and patient recovery. The use of modern ultrasonic equipment, such as ultrasonic surgical scalpels, has gained considerable attention due to their numerous benefits. Some of these advantages include less damage to tissue, faster recovery and making the surgeon's job easier. The aim of this research is to construct a suitable vibrational set for an ultrasonic surgical scalpel. Ultrasonic surgical scalpel consists of three parts: a transducer, a booster, and a horn. In total, two transducers, two boosters, and two horns have been designed and constructed so that four ultrasonic surgical tools can be made. The finite element method in ANSYS Workbench software and the response surface method have been used for modeling the vibrational behavior and optimizing the design. The ultrasonic surgical tool has been designed for a resonance frequency of 55.5 kHz, and the vibration should be such that a displacement amplitude of about 40 microns can be achieved at the tip of the tool. To eva‎luate the constructed surgical tools, impedance testing and harmonic analysis have been used. The difference between the designed tools is their dimensions. Piezoelectric rings with an outer diameter of 16 millimeters and 25 millimeters were used for transducer 1 and transducer 2, respectively. According to the eva‎luations, the surgical tools made with transducer 1, demonstrate better harmonic (displacement amplitude) and electromechanical (mechanical quality factor) properties and are more suitable for use in ultrasonic surgical scalpels.

ابزار برش جراحي فراصوتي , روش اجزاء محدود، بهينه‌سازي , آزمون امپدانسي , تحليل هارمونيك

Ultrasonic Scalpel , Finite Element Method , Optimization , Impedance test , Harmonic Analysis

Mohammad SaberJahromi

Rezvan Abedini