著者

白崎 修

出版者

Japanese Society of Medical Instrumentation

雑誌

医療機器学 (ISSN:18824978)

巻号頁・発行日

vol.80, no.6, pp.632-638, 2010 (Released:2010-12-24)

参考文献数

15

著者

須郷 義広 酒井 智之 寺尾 真美 鵜川 貞二 落合 亮一

出版者

一般社団法人日本医療機器学会

雑誌

医療機器学 (ISSN:18824978)

巻号頁・発行日

vol.83, no.3, pp.273-282, 2013-06-01 (Released:2013-07-17)

参考文献数

26

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A new technology called estimated continuous cardiac output (esCCO) uses pulse wave transit time (PWTT) obtained from an electrocardiogram and pulse oximeter to measure cardiac output (CO) noninvasively and continuously. This study was performed to evaluate the accuracy of esCCO during exercise testing. We compared esCCO with CO measured by echo Doppler aortic velocity-time integral (VTIao_CO). The correlation coefficient between esCCO and VTIao_CO was r = 0.87 (n = 72). Bias and precision were 0.33 ± 0.95 L/min with a percentage error of 30.2%. And the correlation coefficient between change in esCCO and change in VTIao_CO was r = 0.75 (n = 70). The esCCO could detect change in VTIao_CO larger than 1 L/min with a concordance rate of 88.2%. The areas under ROC curves to detect VTIao_CO changes more than 15% and 30% were 0.81 and 0.91, respectively. Polar plots show that the mean polar angle was 2.2° and radial limits of agreement were ±43.6°. The trending ability of esCCO is comparable with that of currently available arterial waveform analysis methods. In this study, the validity of esCCO during exercise testing was assessed and shown to be acceptable with respect to agreement and trending ability compared with the echo Doppler.

著者

岩藤 晋 坂手 克彰 太田 吉夫

出版者

Japanese Society of Medical Instrumentation

雑誌

医療機器学 (ISSN:18824978)

巻号頁・発行日

vol.80, no.1, pp.2-10, 2010 (Released:2010-12-24)

参考文献数

2

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Infusion pumps are one of the most frequently used medical instruments in hospitals. Newer devices are equipped with the History Function. This function keeps the logs of device movements such as alarms and key operations on the device. This study is to investigate the correct usage of the device by utilizing this function. The usages investigated are power-on procedure, and procedures at occlusion alarms and bubble detection alarms.As a result, wrong sequences of usage at the power-on procedure and the procedure at occlusion alarms became clear. In addition, more than half of the devices recorded the occlusion alarms and the bubble detection alarms, during usage for a single patient. We notified to nurses these findings and the right procedure of the device. After notification, we repeated the similar evaluation. The procedure at the occlusion alarms was improved remarkably. However, there was no change about the frequency of alarm appearance.The History Function is useful when we study the usage of the device in the clinical settings. This study indicates that the information about error occurrences and the right procedure to nurses can improve the usage of the infusion pumps effectively.

著者

田仲 浩平

出版者

一般社団法人日本医療機器学会

雑誌

医療機器学 (ISSN:18824978)

巻号頁・発行日

vol.88, no.1, pp.54-62, 2018 (Released:2018-03-27)

参考文献数

9

著者

小笠原 治 祖父江 和哉

出版者

一般社団法人日本医療機器学会

雑誌

医療機器学 (ISSN:18824978)

巻号頁・発行日

vol.86, no.6, pp.537-542, 2016 (Released:2017-01-21)

参考文献数

13

著者

中里 俊章

出版者

一般社団法人日本医療機器学会

雑誌

医療機器学 (ISSN:18824978)

巻号頁・発行日

vol.85, no.5, pp.507-512, 2015 (Released:2015-12-10)

参考文献数

9

著者

坂手 克彰 上野 秀則 峠田 実香 岩藤 晋

出版者

日本医療機器学会

雑誌

医療機器学 = The Japanese journal of medical instrumentation (ISSN:18824978)

巻号頁・発行日

vol.79, no.7, pp.449-450, 2009-10-01

被引用文献数

1

著者

武藤 正樹

出版者

一般社団法人日本医療機器学会

雑誌

医療機器学 (ISSN:18824978)

巻号頁・発行日

vol.87, no.6, pp.561-566, 2017 (Released:2018-01-26)

参考文献数

3

著者

中井 浩司 渡邊 晴美 高橋 幸子 宮本 浩三 土井 厚 花隈 淳 森下 雄亮 澤田 知広 尾辻 眞矢 平手 裕市 進藤 義明 小菅 浩司

出版者

Japanese Society of Medical Instrumentation

雑誌

医療機器学 (ISSN:18824978)

巻号頁・発行日

vol.79, no.8, pp.638-646, 2009 (Released:2010-01-07)

参考文献数

18

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We studied the utility and drawbacks of the earlobe probe sensor on the percutaneous arterial oxygen saturation (SpO2) measurement. The SpO2 from the earlobe, forehead and finger sensor were measured simultaneously, and then changes of SpO2 readings induced by medical interferences and influence by the sensor attachment were compared among three types of sensor. The SpO2 from the earlobe sensor responded to the rapid change of patient clinical condition as well as from the forehead and finger sensor. The pulse wave signal from the earlobe sensor was more stable compared to those from forehead and finger sensor, but the time to display SpO2 readings after the earlobe sensor attachment was similar to the forehead sensor and it took longer than that in case of the finger sensor attachment. Some cases were difficult to measure SpO2 because of extremely thin earlobe and edema of earlobe. The long-term attachment of the earlobe sensor did not leave any surface imprint on the patient skin that is often found with the use of forehead and finger sensor. Also no patient had removed the earlobe sensor on a voluntary basis. While the SpO2 measurement with the earlobe sensor may be affected by several factors such as the earlobe shape and the peripheral circulation, it is the least painful for the patient. The active utilization of the earlobe sensor in clinical practice is promising as a new approach of the SpO2 measurement.

著者

白鳥 典彦

出版者

Japanese Society of Medical Instrumentation

雑誌

医療機器学 (ISSN:18824978)

巻号頁・発行日

vol.83, no.4, pp.379-385, 2013 (Released:2014-03-01)

参考文献数

8

著者

加藤 康男 梅田 祐司 水澤 純一

出版者

一般社団法人日本医療機器学会

雑誌

医療機器学 (ISSN:18824978)

巻号頁・発行日

vol.82, no.3, pp.267-272, 2012 (Released:2012-07-19)

参考文献数

11

著者

土器屋 忠麿

出版者

一般社団法人日本医療機器学会

雑誌

医療機器学 (ISSN:18824978)

巻号頁・発行日

vol.83, no.3, pp.317-320, 2013-06-01 (Released:2013-07-17)

参考文献数

4

著者

金本 光一 原田 中裕 古川 宏

出版者

一般社団法人日本医療機器学会

雑誌

医療機器学 (ISSN:18824978)

巻号頁・発行日

vol.84, no.4, pp.396-404, 2014 (Released:2014-09-30)

参考文献数

11

被引用文献数

1 1

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This study investigated which alarm sound is easiest to distinguish from the background noise. The experiment measured the perception time of some alarm sounds such as: meaningful verbal alarms, meaningless verbal alarms, pulse sounds and melodic alarms. The intensity of each alarm sound-type was increased stepwise against the level of background noise. It was discovered that the alarm sound could be distinguished when the peak value of the spectrum of the alarm sound was equal to or a little bit larger than the level of the spectrum of the background noise. The sound level required for the different types of alarm sounds to be perceived was investigated. This investigation discovered that the pulse sound and meaningful voice alarm were easy to perceive but general melodic alarms were not easily perceived at the same sound level. It was estimated that a smaller alarm sound could be detected if the characteristics of the alarm sound are designed with the background noise taken into account.

著者

加藤 貴充 城間 貴男 高階 雅紀 野口 悟司 有馬 美緒子 南 正人 福田 誠治

出版者

日本医療機器学会

雑誌

医療機器学 (ISSN:18824978)

巻号頁・発行日

vol.79, no.7, pp.462-463, 2009-10-01

著者

岡野 秀鑑 霜鳥 良雄

出版者

一般社団法人日本医療機器学会

雑誌

医療機器学 (ISSN:18824978)

巻号頁・発行日

vol.85, no.1, pp.14-21, 2015 (Released:2015-04-03)

参考文献数

13

被引用文献数

1

著者

久保田 英雄 田中 直文

出版者

一般社団法人日本医療機器学会

雑誌

医療機器学 (ISSN:18824978)

巻号頁・発行日

vol.83, no.1, pp.2-12, 2013 (Released:2013-07-19)

参考文献数

8

被引用文献数

1 3

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We built a traceability system for the management of individual surgical instruments by using 2D symbol and Radio Frequency Identification tags, for the purpose of improving the quality of infection control and risk management, operational improvements and accurate asset management.With this system, we have been able to identify both surgical instruments and patients in a short period of time. It indicates that the traceability system is effective in infection control and risk management. In addition, restoration of discarded data on surgical instruments could be recorded in this system.Therefore, it would be easy to have an accurate inventory and cost data, which may be utilized to make a budget. Consequently, the traceability management will be useful for hospital management. From this time forward, we think that the verification of cost-effectiveness and the standardization of traceability system will be needed.

著者

向井 純平 正木 涼子 富永 祐太 戸川 香代 廣浦 学

出版者

一般社団法人日本医療機器学会

雑誌

医療機器学 (ISSN:18824978)

巻号頁・発行日

vol.87, no.5, pp.511-513, 2017 (Released:2017-11-17)

著者

鎮西 清行

出版者

一般社団法人日本医療機器学会

雑誌

医療機器学 (ISSN:18824978)

巻号頁・発行日

vol.85, no.5, pp.530-534, 2015 (Released:2015-12-10)

参考文献数

5

被引用文献数

2

著者

一二三 奏 根武谷 吾 熊谷 寛

出版者

一般社団法人日本医療機器学会

雑誌

医療機器学 (ISSN:18824978)

巻号頁・発行日

vol.86, no.5, pp.450-458, 2016 (Released:2016-11-11)

参考文献数

13

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Evaluation of lung function is a typical application of electrical impedance tomography (EIT) and a wearable EIT has been developed to give easy use and reliable EIT information in an intensive care medicine. However, chest shape information was important factor to decide measurement accuracy and it was very difficult to measure from a patient on a bedside in an intensive care unit. Therefore, we proposed a novel estimation method of a chest shape using curvature data and chest circumference that would be possible to measure with our wearable EIT. Measurement accuracy was evaluated by applying the proposed method to an ellipse shape with 20cm in X-axis and 10cm in Y-axis, the same ellipse with 20% random noise and two CT images of thorax. To evaluate accuracy of estimated shape, we defined eccentricity ‘e’ that was aspect ratio of estimated shape and compared it between actual and estimated shapes respectively. Error in eccentricity ‘e’ was approximately 3% in ellipse shape without noise, 7% in ellipse shape with noise and 7% in two CT images respectively. The result was considered that our proposed method was useful to estimate shape for accurate EIT measurement using a wearable EIT.

著者

鈴木 義博

出版者

一般社団法人日本医療機器学会

雑誌

医療機器学 (ISSN:18824978)

巻号頁・発行日

vol.80, no.6, pp.659-663, 2010 (Released:2010-12-24)

参考文献数

2