著者

中野 壮陛 藤本 哲男 吉田 正徳

出版者

日本医療機器学会

雑誌

医科器械学 (ISSN:0385440X)

巻号頁・発行日

vol.76, no.6, pp.361-369, 2006-06-01

参考文献数

21

被引用文献数

1

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The purpose of this research is to create an optimal strategy to convert the Japanese medical device industry into a highly competitive power in the field by analyzing its corporate activity. In this first report, we are analyzing the market of medical products in Japan in the period from 1999 to 2003, the cause of why Japan is less than competitive in this field was studied. Multiple linear regression analysis was applied to 80% of medical devices in the domestic market. In the analysis, a dependent variable was a corporate share in the market, and explanatory variables included: a market growth rate, a global competitiveness index, a human body risk index, and quantity of products manufactured. As a result of the analysis, it was revealed that the global competitiveness and the human body risk index give respectively a positive and a negative correlation with the domestic corporate share. It is supposed that the main cause of low global competitive power in the Japanese medical device industry is that the industry tends not to develop new products due to the high risk of human life, and therefore it is difficult for the industry to develop products effectively. As a conclusion, it is necessary to research the detail activities of companies especially in this low competitive field.

著者

藤本 哲男

出版者

日本運動生理学会

雑誌

日本運動生理学雑誌 (ISSN:13403036)

巻号頁・発行日

vol.4, no.2, pp.161-166, 1997-08-30

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The purpose of this experiment was to test whether a mechanical circulatory simulator (MCS), which has been developed in order to evaluate characteristics of artificial organs, could be used to simulate exercise stress tests. The MCS consists of an atrium, an aorta and a ventricle which is driven by a DC motor. It is important to reproduce natural hemodynamic conditions in the MCS. At first, a computational simulation model, which can simulate natural circulatory reactions to exercise stress tests, was developed. Utilizing an algorithm in the model, a blood pressure control system was installed in the MCS. A personal computer used aortic pressure feedback to calculate proper cardiac output, heart rate and total peripheral resistance to control the MCS. Hemodynamic data including aortic pressure, heart rate, cardiac output and total peripheral resistance obtained in the MCS was similar to that from exercise stress tests conducted on a goat using a treadmill (3.2km/h). As a result, the new MCS, with the blood pressure control system, is now considered more effective than previous simulators in exercise stress testing for the aged.