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公开(公告)号：US6134331A
公开(公告)日：2000-10-17
申请号：US793622
申请日：1997-02-28
IPC分类号： A61B7/04
CPC分类号： A61B7/04
摘要： An electronic stethoscope consisting of a transducer, an amplifier and a headphone will be better adapted to the habits of use of doctors when it is supplied with filters which mimic the transfer function of acoustic stethoscopes. Thus, the signals heard will correspond to those learnt, and thereby the advantages of greater amplification and elimination of noise sources may be fully utilized. Hence there is a possibility for extended digital signal processing which may furthermore compensate for the hearing loss of each individual doctor.
摘要翻译： PCT No.PCT / DK95 / 00349 Sec。 371日期1997年2月28日 102（e）日期1997年2月28日PCT提交1995年8月30日PCT公布。 出版物WO96 / 06562 日期1996年3月7日由传感器，放大器和耳机组成的电子听诊器将更好地适应医生使用习惯，当它提供模拟声学听诊器传递功能的滤波器时。 因此，听到的信号将对应于所学到的信号，从而可以充分利用更大的放大和消除噪声源的优点。 因此，存在扩展数字信号处理的可能性，其可以进一步补偿每位个体医生的听力损失。
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2.发明授权
公开(公告)号：US5817007A
公开(公告)日：1998-10-06
申请号：US591663
申请日：1996-04-26
IPC分类号： G01J3/28 , G01N21/05 , G01N21/359 , G01N33/487 , A61B5/00
CPC分类号： G01N21/359 , A61B5/14551 , A61M1/367 , A61B5/14535 , A61B5/14539 , A61B5/14542 , A61B5/14546 , A61M1/14 , A61M1/3609 , A61M2205/3313 , G01J3/2803 , G01N2021/058 , G01N2201/129
摘要： A method and an apparatus for determining the content of a constituent of blood of an individual are disclosed. In the method a whole blood stream is extracted from a blood vessel of said individual, the stream being directed through a path defining a substantially non-varying flow-through area wherein is provided a flow-through measuring cuvette including opposite first and second optical transparent surface parts defining an optical transmission path of the order of 0.5-2.0 mm. The whole blood stream flowing through the measuring cuvette is irradiated by irradiating the first optical transparent surface part of the measuring cuvette with multi-wavelength near infrared light. The near infrared absorption spectrum is detected and the content of the constituent is quantified on the basis of the detected near infrared absorption data. The method is particularly suited for measuring constituents of whole blood in an extracorporeal loop, for example in hemodialysis.
摘要翻译： PCT No.PCT / DK94 / 00297 Sec。 371日期：1996年4月26日 102（e）日期1996年4月26日PCT 1994年8月1日PCT PCT。 出版物WO95 / 04266 日期：1995年2月9日公开了一种用于确定个体血液成分含量的方法和装置。 在该方法中，从所述个体的血管中提取全血流，所述流被引导通过限定基本上不变的流通区域的路径，其中设置有流通测量比色皿，其包括相对的第一和第二光学透明 表面部件限定0.5-2.0mm的光传输路径。 通过用多波长近红外光照射测量反应杯的第一光学透明表面部分来照射流过测量杯的全部血液。 检测近红外吸收光谱，并根据检测到的近红外吸收数据量化成分的含量。 该方法特别适用于测量体外循环中全血的成分，例如在血液透析中。
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公开(公告)号：US07003121B1
公开(公告)日：2006-02-21
申请号：US09283585
申请日：1999-04-01
申请人： Lars Arknæs-Pedersen
发明人： Lars Arknæs-Pedersen
IPC分类号： A61B7/04
CPC分类号： A61B7/04
摘要： A method of processing a signal representing an input sound signal is disclosed. The signal is divided in time into a plurality of signal segments, each having an individual duration of time. The signal segments are processed into an output signal of successive signal segments in such a way that at least one, preferably all, of the signal segments are repeated immediately and successively at least once in the output signal. Each signal segment is established in such a way that the duration of time of a majority, preferably all, of the signal segments is less than 60 ms. Thus, a sound signal can be reduced in speed by doubling the number of short cycles.
摘要翻译： 公开了一种处理表示输入声音信号的信号的方法。 信号被分成多个信号段，每个信号段具有单独的持续时间。 信号段被处理成连续信号段的输出信号，使得至少一个，优选地全部信号段在输出信号中立即并连续地重复至少一次。 以这样的方式建立每个信号段，使得多数，优选全部信号段的持续时间小于60ms。 因此，可以通过使短周期数倍增来降低声音信号的速度。
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4.发明授权
公开(公告)号：US5685317A
公开(公告)日：1997-11-11
申请号：US556937
申请日：1996-03-05
申请人： Svend-Olof Sjostrom
发明人： Svend-Olof Sjostrom
IPC分类号： A61B5/0456 , A61B7/00 , A61B7/04 , G06F17/00 , A61B5/02
CPC分类号： A61B7/04 , A61B5/0456 , A61B7/00
摘要： An apparatus for measuring the cardiac valve function of a person by analyzing an acoustic signal from the heart. The acoustic signal is synchronized with the electrocardiographic signal obtained from the heart. In order to improve the signal-to-noise ratio of the input electrocardiographic signal, the mains-synchronous noise is subtracted from the input electrocardiographic signal. Before analysis of the acoustic signal, a weighting is performed, compensating for individual differences in, in particular, the layer of body fat.
摘要翻译： PCT No.PCT / DK94 / 00212 Sec。 371日期：1996年3月5日 102（e）1996年3月5日PCT 1994年6月1日PCT公布。 第WO94 / 27497号公报 日期1994年12月8日一种用于通过分析来自心脏的声信号来测量人的心脏瓣膜功能的装置。 声信号与从心脏获得的心电图信号同步。 为了提高输入心电图信号的信噪比，从输入心电图信号中减去电源同步噪声。 在分析声信号之前，进行加权，补偿特别是身体脂肪层的个体差异。
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公开(公告)号：US07130429B1
公开(公告)日：2006-10-31
申请号：US09283587
申请日：1999-04-01
CPC分类号： A61B7/04
摘要： An apparatus for processing auscultation signals, e.g. embedded in an electronic stethoscope with a digital readout of an estimated heart rate. The apparatus comprises a bias processor for receiving an auscultation signal and providing a biased auscultation signal; said bias processor comprising an envelope detector and an estimator for calculating a signal representative of the beat frequency of the auscultation signal. In one aspect the information in the biased auscultation signal that is in conformity with the repeated information in the auscultation signal is enhanced. This may e.g. be done by calculating the conformity between the biased auscultation and at least a part of the biased auscultation signal. In another aspect of the invention the auscultation signal is biased by means of A-weighing. Preferably the two aspects of the invention are combined.
摘要翻译： 一种用于处理听诊信号的装置，例如， 嵌入在具有估计心率的数字读出器的电子听诊器中。 该装置包括偏置处理器，用于接收听诊信号并提供偏置的听诊信号; 所述偏置处理器包括包络检测器和用于计算表示听诊信号的拍频的信号的估计器。 在一个方面，增强了与听诊信号中的重复信息一致的倾听听诊信号中的信息。 这可以例如 通过计算偏倚听诊与偏倚听诊信号的至少一部分之间的一致性来完成。 在本发明的另一方面，听诊信号通过A称重被偏置。 优选组合本发明的两个方面。
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公开(公告)号：US07006638B1
公开(公告)日：2006-02-28
申请号：US09688216
申请日：2000-10-16
IPC分类号： A61B7/04
摘要： An electronic stethoscope having a vibration transducer, an amplifier, a headphone arrangement, and at least one digital filter for establishing at least one impulse transfer function corresponding to at least one acoustic stethoscope type. Thus, the signals heard will correspond to those learned, and thereby the advantages of greater amplification and elimination of noise sources may be fully utilized. The ability to compensate for an individual doctor's hearing loss is enabled. Furthermore, with stereoscopic embodiments, sound frequency distributions can be transformed to spatial or temporal sound distributions perceivable by the user facilitating, for example, the detection of heart murmurs and the taking of blood pressure.
摘要翻译： 一种具有振动换能器，放大器，耳机装置和至少一个数字滤波器的电子听诊器，用于建立与至少一个听觉器类型对应的至少一个脉冲传递函数。 因此，听到的信号将对应于所学到的信号，从而可以充分利用更大的放大和消除噪声源的优点。 能够补偿医生的听力损失。 此外，利用立体实施例，声音频率分布可以被转换成用户可感知的空间或时间声音分布，促进例如心脏杂音的检测和血压的检测。
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