This paper mainly introduced the manufacturing technique and circuit theory or a new type of constant-temperature heating device used in laboratory. The practical application shewed that it was a rather ideal laboratory device.

Objectives:To establish a method of electric power detection and to evaluate its performance for ultrasonic harmonic scalpel(UHS).Methods:We defined maximum electric power(Pmax),static electric power(Pg) and spare power index(Pi) at first and worked-out reasonable procedure,then we designed available detecting-tools and determined the Pmax,Pg and Pi.Results:We detected 3 sets of UHS from domestic or overseas makers and acquired Pmax,Pg and Pi successfully.The results were stable,reproducible and positively correlated to ultrasonic power.Conclusions:The ultrasonic power of UHS is difficult to detect.By the experiment in this paper,detecting ultrasonic power can be replaced by detecting electric power.

A new design of gnathodynamometer with microcomputer is introduced in this paper.We de- scrib the detailed structure,circuits and programme of biting head,sample collecting and maintaining and A/D conversion.In addition,the characteristic of the probe made of PVDF membrane is also discussed.

Objective:To design idea and principle of pressure monitoring functions with a dynamic pressure monitoring function of enteral nutrition pump and method of realizing. Methods:On the base of the existing infusion pump liquid principle, summarize the clinical practical experience, put forward to avoid mechanical complications of enteral nutrition support in May by dynamic pressure monitoring transfusion process. Results:The design idea of exposition, analysis and summary of the design process, raise the reasonable design scheme. Conclusion:The current development of China's enteral nutrition pump in the weak stage, Hope the study design can provide help for the domestic independent R&D enteral nutrition pump.

Objective To discuss the procurement managerial technique standard for medical equipment importation.Methods The procurement managerial technique standard for medical equipment importation was studied from the aspects of flows for international bidding,declaration and operation as well as related specifications.Results The imported medical equipment according with the procurement managerial technique standard,gifted with a high cost performance,satisfied the requirements of the nation and the hospital.Conclusion The managerial technique standard can promote the procurement of imported medical equipment.

The basic principles and methods of information classification and encoding, as well as the present situation of classification of medical consumable materials, are introduced. By adopting multi-stage classification and encoding structure to information of medical consumable materials, the classification and encoding become more scientific, flexible and practical, which avails the informational management of medical consumable materials.

Objective To research a computer assisted 3D puncture system. Methods The system drew lessons from the method of CAS. MITK and the frame of X-knife were used to design the machine arm independently. Result The system came to the designing standard by experiments. Conclusion The clinical demanded product is developed with lower price in shorter time by integrating the mature techniques.

The instance reality of medial equipment combined with the center problem of standardization management on medical equipment stock to discuss the questions of how to manage and what about manage.According to correlated management demand and the fact of medical procurement,from the point of view on frame construction flow to the problem of elementary demand on medical equipment procurement,the stock process of medical instrument,the stock process of medical consumable and the management of purchase invoice etc were analyzed.The beneficial research reference can be provided by the daily management jobs of stock and maintenance,the management question of more refinement and general standardization.

The general principles on maintenance and management of technical specification are discussed. Through summarizing many years maintenance experiences of the hospital or medical institutions technical support department, the beneficial mentalities and referential experiences are provided by standardized and effective management on maintenance of medical equipment, according to the medical technology level of medical equipment management department, the economic efficiency, the size of medical equipment, the quality of maintenance technicians, and service ability as well as the management methods of medical equipment material.

Objective To research the quality management technique of medical device that as an important technique of medical engineering department in hospital is a guarantee of the hospital's development.Methods The definition,elements,signification and extension of management technique,elaborated the technique process and requirement of the quality control in hospital were introduced.Results Following an analysis of the quality control system and actualizing methods,perspective and current objective of the accident report system,legal and systemic quality management,as well as the role and responsibility of medical engineering practitioner were discussed.Conclusion The quality level of hospital will be fully improved depending on establishment of the quality management technique for medical device.