小型移动数字成像系统下行经皮冠状动脉腔内成形术

目的 :探讨移动数字成像系统GE OECSeries 980 0进行经皮冠状动脉腔内成形术 (PTCA)的可行性和安全性。方法 :回顾分析 32例应用GE OECSeries 980 0X线机进行PTCA治疗冠心病的临床资料。结果 :①本组病例成功率为 90 6 % (2 9/ 32 ) ,血管成功率为 88 1% (37/ 4 2 ) ,病变成功率 83% (39/ 4 7)。成功病例狭窄由术前目测平均直径狭窄(92 8± 3 5 ) %减少到术后的 (6 5± 4 2 ) %。②AMI溶栓后补救性PTCA成功率高。结论 :应用GE OECSeries 980 0X线机能够满足心血管病区心脏介入治疗的需要 ,是安全可行的和具有良好的成本 效益比     

便携式野战真空注油设备的研制

本文将介绍在野战条件下，便携式真空注油设备，可以方便的更换X－线机球管及给变压器注油。并阐述了该设备的结构及原理。     

可调节携便式镇痛泵

现有的镇痛泵是用于手术后,为患者解除或者减轻患者的疼痛而设计的。一个特殊的原因,为使镇痛泵能用于长期受疼痛折磨的患者,为适应这类患者要自由活动和长期使用的需要,在现有镇痛泵的基础上,经过研究、改造,成功的研制出可调节携便式镇痛泵,经临床使用获得良好的效果,并获得国家实用新型专利(专利号:200420059087.1)。     

Long-term ambulatory monitoring of indirect arterial blood pressure using a volume-oscillometric method

A new portable instrument equipped with a microprocessor was designed for the long-term ambulatory monitoring of indirect arterial pressure in the human finger at desired intervals using a volume-oscillometric technique. All the necessary procedures such as (1) programmed control of cuff pressure, (2) detection of the systolic end-point and the point of maximum amplitude of arterial volume pulsations, (3) reading of the cuff pressures corresponding to these two points, (4) its processing and (5) recording of the systolic and mean pressure together with heart rate on a digital memory integrated circuit were performed automatically. After the monitoring, the data were reproduced and analysed by a conventional personal computer. Simultaneous comparison of the data with direct measurement, operation and evaluation of this instrument, and ambulatory monitoring were carried out. With this instrument noninvasive and accurate monitoring of arterial pressure could be made in unrestricted subjects during daily activities.     

LCD心电监视器两例

为了给我们研制的便携式急救心电监护仪配上监视器,实现心电波形的连续、实时显示,我们试用了两种LCD显示模块.本文介绍了显示器的软、硬件设计.     

便携式近红外光谱仪用于东阿阿胶鉴定及特征波长筛选研究

目的 采用便携式近红外(near infrared,NIR)光谱仪建立东阿阿胶鉴别分析模型,并优选出特征波段。方法 采用BWS903型NIR光谱仪和microPHAZIR^TMRX型NIR光谱仪2款便携式光谱仪采集了47份阿胶样品的光谱,并采用软独立建模聚类分析(soft independent modeling class analog,SIMCA)和偏最小二乘判别分析(partial least squares discriminant analysis,PLS-DA)等化学计量学算法,建立了东阿阿胶的判别分析模型。结果 所建立模型能够准确区分东阿阿胶和其他品牌阿胶。在此基础上,采用相关系数法优选出BWS903光谱特征波长为1300～1380 nm和1460～1540 nm;microPHAZIR^TMRX光谱特征波长为1600～1680 nm和2160～2240 nm,上述波段分别代表-NH₂和-CONHR肽键的1级倍频吸收,这些波段可作为东阿阿胶的特征波段,并可据此设计专用型、小型化的NIR光谱仪,用于东阿阿胶的品牌...     

便携式全自动气压止血带的研制

介绍了便携式全自动气压止血带的原理、特点及应用前景.     

智能仪器低功耗设计在便携式血糖仪中的应用

从硬件和软件设计角度,介绍便携式智能仪器低功耗设计的若干关键技术.在便携式血糖仪的研制中,采用了多种低功耗措施来降低系统功耗.测试表明,在保证测试精度的前提下,合理采用低功耗技术能提高整机性能、降低系统功耗、确保便携式血糖仪长时间连续运行.     

Justification and good practice in using handheld portable dental X-ray equipment: a position paper prepared by the European Academy of DentoMaxilloFacial Radiology (EADMFR)

Handheld portable X-ray devices are increasingly used for intraoral radiography. This development introduces new challenges to staff and patient safety, for which new or revised risk assessments must be made and acted upon prior to use. Major issues might be: difficulties in using rectangular collimation with beam aiming devices, more complex matching of exposure settings to the X-ray receptor used (e.g. longer exposure times), movements owing to the units'' weight, protection of the operator and third persons, and the use in uncontrolled environments. These problems may result in violation of the “as low as reasonably achievable’’, that is, ALARA principle by an increase in (re)exposures compared with the other available intraoral X-ray devices. Hence, the use of handheld portable X-ray devices should be considered only after careful and documented evaluation (which might be performed based on medical physics support), when there is evidence that handheld operation has benefits over traditional modalities and when no new risks to the operators and/or third parties are caused. It is expected that the use of handheld portable X-ray devices will be very exceptional, and for justified situations only. Special attention should be drawn to beam-aiming devices, rectangular collimation, the section of the X-ray receptor, focus–skin distance, and backscatter shielding, and that the unit delivers reproducible dose over the full set of environmental conditions (e.g. battery status and temperature).