Accurate measurements of voltage and current from electrosurgery are the basis of development of electrosurgery with feedback function. We, therefore, developed a parameter measurement system based on PC, with high voltage and current from electrosurgery being sensed with transformers, amplified, filtered, transformed into single-ended signals, and then into RMS signals. The root mean square (RMS) signals were transformed into digital signals through DAQ card and the data was processed in PC with Labview. The process included sampling, displaying and storage. The experiment results indicated that the measurement system could measure the output parameters from electrosurgery steadily and correctly so that the development of the system has been successful. It can be the basis of development of embedded parameters measurement system and can provide accurate feedback information for intellectual electrosurgery.
Electrosurgery ; instrumentation ; Equipment Design

Simple oxygenation respirator is mainly used for respiratory failure patients who are failed in being treated with open positive pressure.It can markedly improve the oxygenation concentration and ventilation.Most respiratory failure patients can avoid using mechanical respirator if it is used adequately.Respiratory model Ⅰ,Ⅱ,Ⅲ can be applied according to different type of respiratory failure respectively.It is also very effective to cerebral vascular diseases.The structure of respirator is fit for human physiology without interfering cardiac and pulmonary functions.It has no contraindications and side effect.It is simple,cheap and practical.

Objective To study the pattern of ultrasonic bone mineral density of calcaneus with age, height and body weight, and to establish a normal reference value of stiffness index (SI) of females in Southern China for providing scientific foundation for osteoporotic diagnosis and prevention. Methods SI for calcaneus in 2498 healthy people 10～87 years old was measured with Achilles Express ultrasound apparatus made in USA. They were divided into groups according to sex and age. One group for 10 years each and the records beyond 69 years were classified into one group, total 7 groups. Results The SI showed a characteristic mild rise-then-fall pattern with increasing age. And the peak value of SI presented in 20～29 age group. Pearson correlation analysis showed negative correlation between SI and age and a positive correlation between SI/ height and weight. The prevalence of osteoporosis gradually increase with age. Conclusion There are significant correlations in SI with age, height and weight; the values of SI will provide an important data reference to establish the normal values and diagnostic]standard of osteoporosis.

Objective To treat arteriosclerosis patients with a simple self-made oxygenation respirator in a re-respiration model. Methods 43 AS patients was enrolled in treatment group(Oxygenation Respirator only) and control group (drug therapy only). Results the efficacy was 92%, better than control group, the efficacy of which was 72%, and P

BACKGROUND:High pulse pressure is the signal of arteriosclerosis or cardiovascular diseases for both hypertension and normal blood pressure population.OBJECTIVE:The pulse pressure and related factors of healthy adults in Sichuan province were analyzed to explore the method for preventing excessive pulse pressure and improving the quailty of life.METHODS:Hierarchical,cluster sampling were performed in 1989 healthy adults.The physical examination,blood glucose,renal function and blood fat were detected,and the relation of pulse pressure and its related factors were analyzed.RESULTS AND CONCLUSION:Pulse pressure increased following the age.especially showed a linear increasing in those who more than 50-year-old The increased pulse pressure leaded to larger fasting plasma glucose,uric acid,blood urea nitrogen,total cholesterol,triacylglycerol,systolic pressure and diastolic pressure,in addition,the age,body mass index,waist-to-hip ratio,triacylglycerol and pulse pressure showed a linear relationship.But physical exercise was negative correlated to pulse pressure.With pulse pressure increasing,the renal function and regulating capacity of blood glucose was decreased The results suggested that mid-aged population should take reasonable diet and more physical exercise to prevent central obesity and excessive pulse pressure,reduce the risk of renal dysfunction and the incidence of cardiovascular disease.

Objective To investigate the methods and results of hand reconstruction by transplanting the fostered residual finger and the second toe,which share the same blood supply system.Methods From January,2014 to January,2016,3 cases with destructive hand injuries in our hospital;and debridement was performed in one session during the early stage of trauma,with skin grafting to cover the wrist stump and foster the residual finger to a branch of the dorsalis pedis artery.The first dorsal metatarsal artery around the toe web was identified and then gradually isolated proximally with dissection of the branches of the dorsalis pedis artery supplying the fostered finger until the convergence of the two blood vessels.Then,reconstructed hand by residual finger and combined second toe transplantation.Results After a follow-up period of 3 months to 2 years,the reconstructed hand had a good appearance and was able to complete basic mundane actions.The function of the limb was restored to a large extent andthe patient was satisfied with the reconstructed hand.Conclusion Transfer of a fostered residual finger and combined second toe which have the same blood supply system for hand reconstruction as a new method need to anastomose only one set of arteries,and it is feasible with the good appearance and function of the reconstructed hand.

Objective To investigate the methods of repair the lateral skin and soft tissue defect of the middle and rear foot with the plantar medial flap transferred before the achilles tendon.Methods Fifteen cases with the lateral skin and soft tissue defect of the middle and rear foot were repaired with the plantar medial flap pedicled with posterior tibia artery transferred before the achilles tendon from January,2012 to October,2015.All the 15 patients were followed up in the way by telephone or back to hospital postoperatively 3 months to 3 years,including 6 cases by telephone follow-up and 9 cases of back-to-hospital follow-up,to observe the appearance,functions of the skin flap and whether the skin flap survived well.Results The flaps of 15 cases survived well.Postoperative followup of 3 months to 3 years,the sensation of the flap was good,without any ulcer or necrosis.The patients walked well and were satisfied with the flap.Conclusion To repair the lateral skin and soft tissue defect with the plantar medial flap transferred before the achilles tendon as a new method is feasible with the good ability of faster sensory recovery,the good appearance and function.

Objective: To investigate the cinlical features and therapeutic methods of unex-pected gallbladder carcinoma. Methods: A retrospective analysis was performed in 19 cases of unexpected gallbladder carcinoma treated in our hospital from April 2002 to April 2008. Results: Ten cases in early stage were perfomed gallbaldder resection and local lymph node removal, and the average survival time was 18.7 months; 4 cases were perfomed extend radical resection, and the average survival time was 12.3 months; 5 cases were performed palliative resection, and the survival time was less than 6 months. Conclusions: Frozen section examination during opera-tion is key to diagnose unexpected gallbladder carcinoma. Radical resection is the first option once the diagnosis is confirmed, and the method can be decided according to Nevin classification and B ultrosound scaning during opreation.

Abstract In order to promote the high quality development of school meals, the article systematically analyzes the Policy Report on Promoting Healthy Meals in Schools issued by World Health Organization (WHO), introduces ways of changing the physical environment of meals and adjusting the provision of dietary information, clarifies the five steps of basic research-goals setting-action plans-implementation-impact evaluation, and points out that the development of school meals in China is facing the realistic difficulties such as unreasonable school nutrition structure, unbalanced nutrition supply, low nutritional awareness of students and serious double malnutrition burden. The paper puts forward the enlightenment of reasonable use of nudge to help students develop scientific eating habits, strengthen school health education, and reduce students double burden of malnutrition.

Haptic feedback plays a significant role in minimally invasive robotic surgery (MIRS). A major deficiency of the current MIRS is the lack of haptic perception for the surgeon, including the commercially available robot da Vinci surgical system. In this paper, a dynamics model of a haptic robot is established based on Newton-Euler method. Because it took some period of time in exact dynamics solution, we used a digital PID arithmetic dependent on robot dynamics to ensure real-time bilateral control, and it could improve tracking precision and real-time control efficiency. To prove the proposed method, an experimental system in which two Novint Falcon haptic devices acting as master-slave system has been developed. Simulations and experiments showed proposed methods could give instrument force feedbacks to operator, and bilateral control strategy is an effective method to master-slave MIRS. The proposed methods could be used to tele-robotic system.
Feedback ; Humans ; Minimally Invasive Surgical Procedures ; instrumentation ; Robotics ; instrumentation ; Surgery, Computer-Assisted ; instrumentation ; Touch Perception