公开(公告)号：US4548211A

公开(公告)日：1985-10-22

申请号：US570079

申请日：1984-01-12

Applicant: Lloyd A. Marks

Inventor： Lloyd A. Marks

IPC: A61B5/0456 ,  A61B5/053 ,  G06F17/00 ,  A61B5/02

CPC classification number: A61B5/0535 ,  A61B5/0456 ,  A61B5/7239

Abstract: An improved method and apparatus for measuring the pulsatile volume and net inflow in a body segment (e.g. a limb) is disclosed. An amplitude stabilized oscillator of high quality is utilized, together with normalization of the output signal measured at the body segment relative to the input signal delivered to the body segment such that an improved signal-to-noise ratio is achieved. In addition, utilizing a digital computer and an EKG signal as a time reference, the individual plethysmograph volume pulse and its first derivative are selectively averaged over many beats, thus further improving the signal-to-noise ratio and allowing a more critical examination of the wave profile. The outputs from the computer include the plethysmogram, the first and second derivatives thereof, the averaged EKG waveform, and the absolute physiologic values of peak-to-peak pulsatile volume, and peak net inflow.

Abstract translation: 公开了用于测量身体部分（例如肢体）中的脉动体积和净流入的改进的方法和装置。 利用高质量的振幅稳定的振荡器，以及相对于输送到身体段的输入信号在体节段处测量的输出信号的归一化，使得实现改善的信噪比。 此外，利用数字计算机和EKG信号作为时间参考，各个体积描记体积脉冲及其一阶导数在许多节拍上选择性地平均，从而进一步提高信噪比并允许对 波形。 计算机的输出包括体积描记图，其一次和二阶导数，平均EKG波形，峰 - 峰脉动体积和峰值净流入的绝对生理值。

公开(公告)号：US4140141A

公开(公告)日：1979-02-20

申请号：US835887

申请日：1977-09-23

Applicant: Lloyd A. Marks

Inventor： Lloyd A. Marks

IPC: E04H15/48 ,  A45F1/16 ,  A45F1/18

CPC classification number: E04H15/48 ,  Y10S135/909 ,  Y10S16/13

Abstract: A portable collapsible frame structure for tents, shelters, temporary buildings and the like is disclosed. The frame includes a plurality of elongate, rigid frame members connected by pivotable joints to each other in end-to-end relation such that alternating joints are articulatable in opposite directions to permit folding of the frame members into side-by-side, parallel relation for ease of transportation. The frame structure is held in its erected position by tensile elements which are arranged to apply a compressive force to the abutting ends of the frame members and thereby rigidify the joints of the frame structure.

Abstract translation: 公开了一种用于帐篷，遮蔽物，临时建筑物等的便携式可折叠框架结构。 框架包括多个细长的刚性框架构件，其通过可枢转接头以端对端关系彼此连接，使得交替的关节可在相反的方向上铰接，以允许框架构件并排并排，平行关系 为方便运输。 框架结构通过被布置成对框架构件的邻接端施加压缩力从而使框架结构的接合处于刚性的拉伸元件保持在其直立位置。

公开(公告)号：US08152413B2

公开(公告)日：2012-04-10

申请号：US12493970

申请日：2009-06-29

Applicant: Lloyd A. Marks ,  David W. Weber

Inventor： Lloyd A. Marks ,  David W. Weber

IPC: B63C11/44

CPC classification number: B63C11/2245 ,  B63C11/08 ,  B63C2011/085

Abstract: An improved buoyancy compensation device having a lesser change in buoyancy with depth than conventional buoyancy compensation devices which use ambient pressure bladders is disclosed. The improved device comprises one or more elastic members that, throughout the working range of diving pressures and volumes, is always elastic and, when pressurized, maintains an internal air pressure that is always greater than the ambient pressure at any dive depth. The invention also relates to a method of providing a buoyancy compensation device with an elastic member having a lift versus depth characteristic that approaches the lift versus depth characteristic of a constant or fixed volume buoyancy compensation device.

Abstract translation: 公开了一种改进的浮力补偿装置，其具有比使用环境压力气囊的常规浮力补偿装置更深的浮力变化。 改进的装置包括一个或多个弹性构件，其在潜水压力和体积的整个工作范围内始终是弹性的，并且当加压时，保持总是大于任何潜水深度处的环境压力的内部空气压力。 本发明还涉及一种提供浮力补偿装置的方法，所述浮力补偿装置具有接近常数或固定体积浮力补偿装置的升力与深度特性的升力与深度特性的弹性构件。

公开(公告)号：US20110060201A1

公开(公告)日：2011-03-10

申请号：US12555400

申请日：2009-09-08

Applicant: Lloyd A. Marks ,  Michael Smith

Inventor： Lloyd A. Marks ,  Michael Smith

IPC: A61B5/1455 ,  A61B5/02

CPC classification number: A61B5/0535 ,  A61B5/026 ,  A61B5/0295 ,  A61B5/14551

Abstract: This device uses electrical impedance and signal processing to measure the small change in volume (“Pulse Volume”) of a limb-segment that occurs with each heartbeat. “Pulsatile Flow” is defined as the pulse volume multiplied by the heart rate and is an index of tissue perfusion. This information can be combined with measured blood oxygen saturation to determine how much oxygen is reaching the tissues. The combination of knowing oxygen saturation and tissue perfusion is far more useful than knowing just one or the other of these parameters.

Abstract translation: 该装置使用电阻抗和信号处理来测量每个心跳发生的肢体段的小的体积变化（“脉搏体积”）。 “脉动流量”定义为脉搏量乘以心率，是组织灌注的指标。 该信息可以与测量的血氧饱和度结合，以确定到达组织的氧量。 知道氧饱和度和组织灌注的组合比了解这些参数中的一个或另一个要好得多。

公开(公告)号：US20100241014A1

公开(公告)日：2010-09-23

申请号：US12564573

申请日：2009-09-22

Applicant: Lloyd A. Marks ,  Michael Smith

Inventor： Lloyd A. Marks ,  Michael Smith

IPC: A61B5/022

CPC classification number: A61B5/022 ,  A61B5/02141 ,  A61B5/0535 ,  A61B5/6824

Abstract: A device for non-invasive measurement of blood pressure includes a blood pressure cuff, a plethysmographic electrode for acquiring an impedance plethysmogram distal to the cuff and a processing device to inflate and deflate the cuff, generate the impedance plethysmogram and to determine the systolic and diastolic blood pressures. It is determined when the cuff is completely occluding the extremity, e.g., by detecting pulses at a second, partially occluded cuff or by a photoplethysmogram attached to the big toe. The device can be used to measure systolic or diastolic blood pressure or both. It can also be used to take ankle-brachial measurements. An autocorrelation technique can be used to correct noise.

Abstract translation: 用于非侵入式测量血压的装置包括血压套管，用于获取袖带远端的阻抗体积描记图的体积描记电极和用于使袖带膨胀和放气的处理装置，产生阻抗体积图并确定收缩和舒张 血压。 确定袖带何时完全闭塞末端，例如通过检测在第二部分闭塞的袖带上的脉冲或通过附着在大脚趾上的光电容积图来确定。 该装置可用于测量收缩压或舒张压或两者。 它也可用于进行踝臂测量。 可以使用自相关技术来校正噪声。

公开(公告)号：US5168901A

公开(公告)日：1992-12-08

申请号：US705059

申请日：1991-05-23

Applicant: Lloyd A. Marks

Inventor： Lloyd A. Marks

IPC: A61M5/168

CPC classification number: A61M5/16827 ,  Y10T137/87885

Abstract: A multi-function fluid communication control system for effecting selective automated control of fluid communication between fluid sources and instruments is disclosed. The system comprises a disposable stopcock manifold having a plurality of stopcocks adapted to be releasably connected to an actuator system which automatically operates the stopcocks. The stopcocks may also be manually operated to override the automatic operation of the stopcocks. The actuator system for the stopcock manifold is controllable by a microprocessor.

Abstract translation: 公开了一种用于实现流体源和仪器之间的流体连通的选择性自动控制的多功能流体通信控制系统。 该系统包括一次性活栓歧管，其具有适于可释放地连接到自动操作活栓的致动器系统的多个活栓。 也可以手动操作旋塞以覆盖旋塞的自动操作。 用于活塞歧管的致动器系统由微处理器控制。