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.

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.

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.

Objective To develop the darkroom(tent) needed for X-ray film developing in the field conditions.Methods Three layers of colored cloth in red,black and army green were used for light-proving.Methods as field tent was used to support ground and create space.Results Tested in comprehensive field medical support drilling,this tent could develop film in 10 minutes despite the high temperature in the tent.The result was accepted by doctors.Conclusion It is waterproof,windproof and lightproof,and can develop satisfactory films in practical drill.

Objective To describe the financial management specification of the medical device account in hospital. Methods The stock and consumption statistics situation of the medical equipment and consumable material from technical angle were elaborated,as well as the equipment maintenance of the administrative regulations. Results The regulations can be used to inquire,count,report conveniently,and acquire the use of supplies and equipment maintenance in details. Conclusion It will enable the work of medical engineering disciplines to have foresightedness,regularity,independency and determinism.

Objective To discuss aspects of medical equipments data information management techniques:medical equipment information management and hospital equipment management system naming regulations which are the core of hospital medical equipment data information management techniques. Methods From view of techniques,it thoroughly discussed concrete techniques regulations of each part. Results It has important directive function for medical equipments informational management and department of equipment management. Conclusion Establishment of medical equipment information management will promote hospital management level enormously,and more and more emphasis are being placed on it.

Objective To set up proper management specifications for hospital bidding,since there is no national and military unification patterns and standards as the administrative regulations of medical equipment bidding at present.Methods Through the unceasing exploration and summary,the article proposed a series of scientific,feasible and effective management plan as a standard model,methods and steps in the medical equipment bidding program.Results According to the management plan,the tender of the production,group formation,implementation of bidding,and statistical information could be procured.Conclusion Its implementation will cause the medical devices bidding program to be more perfect.

Objective To discuss the management specifications of medical device application. Methods The article discussed the management specifications of medical device application, such as equipping principle, bar code management, annual assessment, and secondary warehouse, proposed beneficial plan and steps. Results With further implementation, it will enable the management of medical device application more refined, even more targeted and effective. Conclusion The equipment management regulations relates to a number of policy requirements which belongs to different countries, and it waits for consummating unceasingly.

Objective To discuss the specification of centralized management of hospital medical equipment to enhance the efficiency and economical benefit.Methods Centralized management center of medical equipment and general medical equipment leasing system were established.The environment requirements,economic accounting and data statistics were also discussed.Results The utilization rate of medical equipment was enhanced greatly,and purchase cost was decreased.Conclusion Hospital administrators can find reference to serve for first-line clinician.

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.