公开(公告)号：US3349763A

公开(公告)日：1967-10-31

申请号：US42734465

申请日：1965-01-22

Applicant: PROTOTYPES INC

Inventor： CLEMENTS JR CLARENCE J ,  LEAF WILLIAM B

IPC: A61B5/022

CPC classification number: A61B5/02208 ,  A61B2560/0223 ,  Y10S128/90 ,  Y10S128/901

公开(公告)号：US3641993A

公开(公告)日：1972-02-15

申请号：US3641993D

申请日：1970-04-23

Applicant: PROTOTYPES INC

Inventor： GAARDER KENNETH R ,  LEAF WILLIAM B

IPC: A61B5/00 ,  A61B5/0488 ,  A61B5/05

CPC classification number: A61B5/486 ,  A61B5/0488 ,  A61B5/7242 ,  Y10S128/905

Abstract: This specification discloses an electrical apparatus which measures human muscle activity and provides both visual and audio information relative to such activity for feedback to the human. Slight skin voltages caused by muscle activity are assumed by electrodes, transmitted via shielded electrical leads and processed by the apparatus, first to provide a visual display of the instantaneous logarithm of the peak value of such signals and secondly to provide a visual display of an accumulation or integration of the instantaneous logarithm of the peak signal values over a selectable and timed integration interval. In addition to these visual indications for human feedback, an audio signal, with a frequency proportional to the instantaneous logarithm of the peak value, is provided as a string of sharp pulses thus allowing human discrimination at very low frequencies such as 1 Hz.

Abstract translation: 本说明书公开了一种电气设备，其测量人类肌肉活动并提供相对于这种活动的视觉和音频信息以反馈给人。 由肌肉活动导致的轻微皮肤电压由电极假设，通过屏蔽电线传输并由设备处理，首先提供这种信号的峰值的瞬时对数的视觉显示，其次提供累积的视觉显示 或在可选择和定时的积分间隔上积分峰值信号值的瞬时对数。 除了用于人类反馈的这些视觉指示之外，具有与峰值的瞬时对数成比例的频率的音频信号被提供为尖锐脉冲串，从而允许在非常低的频率（例如1Hz）下进行人体辨别。

公开(公告)号：US3602213A

公开(公告)日：1971-08-31

申请号：US3602213D

申请日：1968-02-13

Applicant: PROTOTYPES INC

Inventor： HOWELL WILLIAM L ,  LEAF WILLIAM B

IPC: A61B5/024 ,  A61B5/026 ,  A61B5/02

CPC classification number: A61B5/0261 ,  A61B5/02416

Abstract: A method and apparatus for detecting occlusions in one of the internal carotid arteries by the differential sensing of epidermal blood flow in the supraorbital areas. A pair of photoelectric transducers that sense the relative absorption or reflection of light by the blood at the surface of the skin as an indication of blood flow are positioned over the supraorbital notches above the eyes. The blood contributions to these areas from the superficial temporal, angular and occipital arteries are eliminated by compression, leaving the internal carotids as the only suppliers. The sensor outputs are then compared, and any unbalance indicates an occlusion in one of the carotid arteries. Same may also be detected by momentarily compressing the supraorbital areas as well, and then comparing the refilling curves produced by the sensors. The location of the occlusion above or below the carotid bifurcation may be determined by removing all compression and repositioning the transducers to sense the external carotid flows.