公开(公告)号：US5392781A

公开(公告)日：1995-02-28

申请号：US686420

申请日：1991-04-16

申请人： Patrick G. Phillipps ,  Paul Epstein ,  David G. Tweed

发明人： Patrick G. Phillipps ,  Paul Epstein ,  David G. Tweed

IPC分类号： A61B5/022 ,  A61B5/02 ,  A61B5/0225

CPC分类号： A61B5/02208 ,  A61B5/02

摘要： Several techniques are provided for aiding in the discrimination of detected biological signals indicative of blood pressure from detected signals not indicative of blood pressure (e.g., noise). A threshold, based predominantly on a level of noise, is developed and used in the discrimination. A second threshold, based predominantly on levels of previously detected biological signals, is developed and additionally used to help discriminate the biological signals from noise. The biological signals are detected during a selected portion of a cardiac cycle, and additional signals detected outside of the selected portion of the cycle are applied to the detected signals. Another threshold may be developed based predominantly on a level of signals sensed by a transducer positioned to preferentially sense noise; the transducer is positioned so that the noise that it detects is related to noise that is detected during the detection of the biological signals. Blood pressure is measured during periodically scheduled measurement cycles, and a measurement cycle is suspended if noise exceeds a predetermined level. The times at which the detected signals (i.e., the signals indicative of blood pressure and the signals not indicative of blood pressure) are processed during a given cardiac cycle are selected based at least in part on the pressure of the cuff. The biological signals indicative of blood pressure that are detected during a current measurement cycle are used to at least in part determine the times at which the detected signals will be processed during a succeeding measurement cycle.

摘要翻译： 提供了几种技术来帮助鉴别从未指示血压（例如，噪声）的检测信号指示血压的检测到的生物信号。 基于噪音水平的阈值主要用于歧视。 开发了主要基于先前检测到的生物信号的水平的第二阈值，并且另外用于帮助区分生物信号与噪声。 在心脏周期的选定部分期间检测生物信号，并且在周期的选定部分之外检测到的附加信号被应用于检测到的信号。 可以主要基于被定位成优先感测噪声的换能器感测的信号的水平来开发另一个阈值; 换能器被定位成使得其检测到的噪声与在生物信号的检测期间检测到的噪声相关。 在周期性调度的测量循环期间测量血压，并且如果噪声超过预定水平，则测量循环被暂停。 至少部分地基于袖带的压力选择在给定的心动周期期间处理检测到的信号（即，指示血压的信号和不指示血压的信号）的时间。 指示在当前测量周期期间检测到的血压的生物信号用于至少部分地确定在随后的测量周期期间检测到的信号将被处理的时间。

公开(公告)号：US5003605A

公开(公告)日：1991-03-26

申请号：US393781

申请日：1989-08-14

申请人： Patrick G. Phillipps ,  Paul Epstein ,  David G. Tweed

发明人： Patrick G. Phillipps ,  Paul Epstein ,  David G. Tweed

IPC分类号： A61B5/022 ,  A61B5/025 ,  A61B5/0408 ,  A61B5/0456 ,  A61B7/02 ,  A61B7/04

CPC分类号： A61B7/02 ,  A61B5/04085 ,  A61B5/0456

摘要： A stethoscope, operable in an acoustic or electronically augmented mode, is disclosed. In one electronically augmented mode of operation, the stethoscope simultaneously provides the listener with combined unmodified, familiar audible sounds and sounds which have been electronically augmented to bring them within the human auditory range. Additionally, a timing sound may be provided along with the unmodified, familiar audible sounds and electronically augmented sounds to assist the listener in determining when sounds occur in the heart cycle. The timing sound may be enabled in the acoustic mode of stethoscope operation so that the listener can place familiar audible sounds within the heart cycle.

摘要翻译： 公开了一种以声学或电子增强模式操作的听诊器。 在一种电子增强操作模式中，听诊器同时向聆听者提供组合的未修改的，熟悉的可听见的声音和声音，这些声音和声音已被电子增强以将它们带入人的听觉范围。 此外，可以提供定时声音以及未修改的熟悉的可听见的声音和电子增强的声音，以帮助听众确定在心脏周期中何时出现声音。 在听诊器操作的声学模式中，定时声音可以被使能，从而听众可以在心脏周期内放置熟悉的声音。

公开(公告)号：US3945373A

公开(公告)日：1976-03-23

申请号：US525945

申请日：1974-11-21

申请人： David G. Tweed ,  Eric LaWhite

发明人： David G. Tweed ,  Eric LaWhite

IPC分类号： A61B5/03 ,  A61B5/10

CPC分类号： A61B5/6831 ,  A61B5/4356

摘要： A tocodynamometer for providing an electrical output related to body surface displacement of a patient, comprising, a housing, a patient contacting member, a support assembly mounting the member for controlled movement relative to the housing in response to the displacement, and an electro-optical transducer assembly for converting the controlled movement into the electrical output, the transducer assembly comprising relatively movable members one of which is coupled to the patient contacting member for movement therewith to vary the output in response to the controlled movement. In another aspect the support assembly comprises at least one planar spring element having a first portion fixed to the housing and a second portion fixed to the member.

摘要翻译： 一种用于提供与患者的身体表面位移相关的电输出的电动机，其包括：外壳，患者接触构件，支撑组件，其安装所述构件以响应于所述位移而相对于所述壳体受到控制;以及电光学 换能器组件，用于将受控运动转换成电输出，换能器组件包括相对可移动的构件，其中一个联接到患者接触构件，用于与其一起运动以响应受控运动而改变输出。 在另一方面，支撑组件包括至少一个平面弹簧元件，其具有固定到壳体的第一部分和固定到构件的第二部分。