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

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
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

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
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

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
槇 弘倫 小川 英邦 米沢 良治 岩本 純一 二宮 石雄 佐田 孝治
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.4, pp.281-289, 2010 (Released:2010-12-24)
参考文献数
11
被引用文献数
1

A wearable bioinformation recording system has been developed for monitoring health conditions, daily living activities and heart function of elderly person. A tri-axis accelerometer attached to the elderly person can simultaneously measure dynamic and static acceleration forces. The heart rate, respiration rate, activity, posture and behavior are detected from the measured acceleration forces. These data are automatically transmitted to the host computer every hour, via a Personal Handy Phone (PHS). The host computer makes a graphic chart from these data. The elderly person's immediate family, caregiver or doctor can download the graphic chart to an internet mobile phone. When a heart discomfort is felt, the elderly person pushes the transmission switch on a wearable sensor, which sends the phonocardiogram (PCG) waveforms derived from the dynamic acceleration force of the prior two minutes and the waveforms for two minutes after the switch is pushed, directly to the host computer. The PCG is stored to the host computer. The doctor can download the PCG to the smart phone and monitor graphically.The developed system is not only applicable to at-home solitary elderly people, but could also be useful for monitoring hospital patients.
著者
Borneff-Lipp Marianne
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.78, no.1, pp.27-34, 2008
被引用文献数
2

本稿は,ドイツハレ市(Halle)に位置する大規模な大学病院の中央滅菌調度部門(Central Sterile Supply Department,以降CSSD)における,手術器材の再処理に関する品質管理に焦点をあてた報告である.本大学病院は2004年に新築され稼動開始したもので,病床は1,100床である.手術室,病棟や外来で使用される全ての器材が再処理されるこのCSSDは,ヨーロッパで最大かつ最新の施設の一つである.このCSSDは2006年12月にDIN EN ISO9001:2000とDIN EN ISO 13485:2003の認証を取得したが,これは全てのサブユニットを含む完全な状態での大学病院のCSSDとしての認証であり,ドイツで初めてである.CSSDには,ウォッシャー・ディスインフェクター,内視鏡洗浄消毒器,トンネル型ウォッシャー,蒸気滅菌器と,低温プラズマ滅菌器が設置されている.2台のステラッド[○!R]200低温プラズマ滅菌器は,高価で熱により影響を受けやすい器材を滅菌するために導入された.ハレ大学衛生研究所の科学研究チームは,10年以上にわたりステラッド[○!R]低温プラズマ滅菌器全機種の微生物的効力を試験: 研究してきた.この研究は,ANSI,AAMI,ISO14937の指針に従って実施された.試験を実施した全ての事例において滅菌保証レベル(SAL,10^<-6>)が達成されていた.このように,全ての機種が要求を満たしていることが証明された.さらた,新しい技術を用いたステラッド[○!R]NXは,より短い滅菌時聞で,細く長い管腔内を持つより滅菌が難しい器材の滅菌処理が可能であるという利点を示した.実使用条件下でのさまざまな適用においては,低温プラズマ滅菌器は,熱により影響を受けやすい器材の早い回転が求められる臨床や外来の現場に対しての最新の解決策であると考えられる.