ISSN:0309-1902    

DOI:10.3109/03091908309041251

出版商:Taylor&Francis    

年代:1983

数据来源: Taylor

摘要:

The Office of Technology, Assessment (OTA) was formed us part of the US Congress in 1972. The‘Health Program was established in 1975. The purpose of the OTA is to advise Congress on the positive and negative implications of technological change. Since its beginning, the Health Program has spent most of its effort in describing technology assessment in health care and federal policies toward such assessment. A number of specific medical technologies have also been evaluated. Reports on health-care topics by the OTA have had some specific effects in Congress, but the more important impact is probably on the broader climate of opinion concerning medical technology and its bene fits, risks, and costs. Technology assessment has become an established part of the Congressional decision-making process and is being used increasingly in countries other than the United States.Summary and conclusionsThe Office of Technology Assessment was established less than a decade ago because of general concerns about the place of technology in society. Although medical technology has some unique aspects, it is still subject to much of the same questioning. With large public investments in the development, adoption, and use of medical technology, the questioning seems certain to continue. Policies toward medical technology are evolving rather rapidly. OTA is both part of the change process and is evaluating those changes. Basically, OTA is a commitment by the US Congress to the principle that the use of the best available information can make important contributions to political decisions.

ISSN:0309-1902    

DOI:10.3109/03091908309041252

出版商:Taylor&Francis    

年代:1983

数据来源: Taylor

摘要:

Various tests, such as foot volumetry, static and ambulatory venous pressure measurements, Doppler flow recordings and calf plethysmography, have recently been developed to aid and to attempt to quantify venous insufficiency. This paper describes a simple device for measuring foot volume changes during the prescribed exercise. The foot is placed in a water-bath and the change in foot volume is recorded by a strain-gauge pressure transducer. The transducer responds to the head of water change. which, in turn, is directly proportional to the volume change. Also described is a simple device for the measurement of pedal venous pressure using a standard, commercially available transducer. The methodology of the tests is discussed, together with sample results.

ISSN:0309-1902    

DOI:10.3109/03091908309041253

出版商:Taylor&Francis    

年代:1983

数据来源: Taylor

摘要:

An evaluation of infusion pumps and controllers is being undertaken for the UK Department of Health and Social Security, within the Bath District Health Authority. The technical performance and safety assessments are being made at the Bath Institute of Medical Engineering, and the user assessment at various hospitals in the Bath area. The first batch assessed was constituted of devices which achieve control by means of detecting drip-rate (the Frenshore IC2 and Ivac 231 controllers and the Imed 911, Ivac 531, Graseby Dynamics MP20 and Vickers DC2 pumps), und the second batch to be assessed was constituted of syringe pumps (the Braun Perfusors ED2 and V1, Fresenius Injectomat 30 and 50, Graseby Dynamics MS1 6 and its MS18 variant, Sage 242 A and its 24s and 240E variants, and Vickers Treonic 1P3). The results of these assessments were reported in'Health Equipment Information'('HEI') 96 (September 1981) and 106 (October 1982) respectively.We reproduce belowa revriew of controlled infusion techniques, from the first report, and extracts of the report of the assessment of syringe pumps.This material is Crown Copyright and the editors are grateful to the DHSS for permission to publish.

ISSN:0309-1902    

DOI:10.3109/03091908309041254

出版商:Taylor&Francis    

年代:1983

数据来源: Taylor

摘要:

Consideration of the timing circuitry employed in the Sage pump model 341 A indicates that the pump's performance will be strongly affected by component tolerances, and our measurements have confirmed this impression. Thus, delivered, flow rates may deviate considerably from those indicated on the calibration chart; our instrument was about 10% slow at all settings. For many’applications it will be necessary to carry out a full calibration procedure, which should be repeated following any repairs to the electronic circuitry. The pump also suffered from drift at certain settings because un inappropriate component had been used in the timing circuitry. These findings will also apply’to the Sage pump models 240 A and 242 A, which employ, similar timing circuitry to the 341 A. When precautions are taken to overcome these problems, the pump's performance is satisfactory. for both clinical use and some laboratory applications.

ISSN:0309-1902    

DOI:10.3109/03091908309041255

出版商:Taylor&Francis    

年代:1983

数据来源: Taylor

ISSN:0309-1902    

DOI:10.3109/03091908309041256

出版商:Taylor&Francis    

年代:1983

数据来源: Taylor

ISSN:0309-1902    

DOI:10.3109/03091908309041257

出版商:Taylor&Francis    

年代:1983

数据来源: Taylor

ISSN:0309-1902    

DOI:10.3109/03091908309041258

出版商:Taylor&Francis    

年代:1983

数据来源: Taylor

摘要:

Radiological Physics By M. E. J. Young (H. K. Lewis&Co. Ltd, London, 1983), pp. xii + 788.£35.00. ISBN 7186–0452–0. 3rd edn.Blood Flow: Theory and Practice Edited by D. E. M. Taylor and A. L. Stevens. Academic Press Inc. (London) Ltd, London (1982). pp. ix + 334.£27.00. $50.00. ISBN 0–12–683880–1.

ISSN:0309-1902    

DOI:10.3109/03091908309041259

出版商:Taylor&Francis    

年代:1983

数据来源: Taylor

ISSN:0309-1902    

DOI:10.3109/03091908309041260

出版商:Taylor&Francis    

年代:1983

数据来源: Taylor