Abstract The ultrasonic bone scalpel was often used in all kinds of clinical orthopedic surgery as a new type medical instrument. Based on the working theory and combined with design method quarter wavelength transducer horn, this study proposed an optimization for composite horn structure. structure simplified, its length shortened. Finite element analysis, modal harmonic response analysis wer...

OBJECTIVES Our aim was to evaluate a new electrosurgical instrument (Lap Loop device) that amputates the uterine corpus from the cervix during a laparoscopic supracervical hysterectomy (LSH) and to compare the time required for cervical amputation with traditional methods. METHODS This comparative trial was conducted at the University of Louisville and Norton Healthcare Hospitals, Louisville,...

The aim of this study was to compare the incidence of lymphoedema after different treatments of the axilla in patients with breast cancer (BC). Medical records of 205 women (median age 61 years, range 26-72 years) who underwent curative surgery for primary BC were reviewed. According to the treatment of the axilla, the study population was divided into four age- and stage-matched groups of pati...

BACKGROUND AND OBJECTIVES To determine if surgery using ultrasonic energy for dissection results in less adhesion formation than monopolar electrosurgical energy in the late (8 weeks) postoperative period. METHODS Injuries were induced in rabbits by using ultrasonic energy on one uterine horn and the adjacent pelvic sidewall and using monopolar energy on the opposite side. Eight weeks postope...

PURPOSE We analyzed the smoke plume produced by various energy-based laparoscopic instruments and determined its effect on laparoscopic visibility. MATERIALS AND METHODS The Bipolar Macroforceps, Harmonic Scalpel, Floating Ball, and Monopolar Shears were applied in vitro to porcine psoas muscle. An Aerodynamic Particle Sizer and Electrostatic Classifier provided a size distribution of the plu...

Male circumcision is one of the most commonly performed operations worldwide, and many novel techniques have been developed for better postoperative outcomes. The purpose of this study was to explore the feasibility of applying the ultracision harmonic scalpel (UHS) for circumcision by using dogs. Sixteen adult male dogs were divided into two groups: the UHS group and the control group. The dog...

OBJECTIVE To evaluate the pain level, analgesic consumption, operation time, bleeding and early complications after open and closed hemorrhoidectomy using a harmonic scalpel (HS) and classical methods. METHODS Between January 2005 and January 2006, 87 patients with grade III-IV hemorrhoids, admitted in General Surgery Clinic, Gulhane Military Medical Academy, Ankara, Turkey were enrolled in t...