公开(公告)号：US09265428B2

公开(公告)日：2016-02-23

申请号：US12175803

申请日：2008-07-18

Applicant: David O'Brien ,  Jason White ,  Michael A. Fonseca ,  Jason Kroh ,  Mark Allen ,  David Stern

Inventor： David O'Brien ,  Jason White ,  Michael A. Fonseca ,  Jason Kroh ,  Mark Allen ,  David Stern

IPC: A61B5/02 ,  A61B5/00 ,  A61B5/07

CPC classification number: A61B5/02014 ,  A61B5/0031 ,  A61B5/076 ,  Y10T29/49016 ,  Y10T29/49069 ,  Y10T29/49071 ,  Y10T29/49073

Abstract: A wireless sensor for indicating a physical state within an environment includes a housing defining a hermetically sealed cavity. A structure located within the cavity of the housing has elements providing capacitance, the elements being arranged such that the distance and thereby the capacitance of the structure changes when a physical state of the environment changes. The structure has a resonant frequency based at least in part on the capacitance of the structure when in the presence of a fluctuating electromagnetic field. When the sensor is positioned within an environment and is subjected to a fluctuating electromagnetic field, the resonant frequency indicates the physical state of the environment.

Abstract translation: 用于指示环境中的物理状态的无线传感器包括限定密封空腔的壳体。 位于壳体的腔内的结构具有提供电容的元件，该元件被布置成使得当环境的物理状态改变时，结构的距离以及由此的结构的电容改变。 当存在波动的电磁场时，该结构至少部分地基于结构的电容。 当传感器位于环境中并且经受波动的电磁场时，谐振频率表示环境的物理状态。

公开(公告)号：US07618363B2

公开(公告)日：2009-11-17

申请号：US10636293

申请日：2003-08-06

Applicant: Jay Yadav ,  Mark Allen ,  David O'Brien ,  David Stern ,  Jason White ,  Michael A. Fonseca

Inventor： Jay Yadav ,  Mark Allen ,  David O'Brien ,  David Stern ,  Jason White ,  Michael A. Fonseca

IPC: A61M1/12

CPC classification number: A61M1/106 ,  A61M1/1008 ,  A61M1/1068 ,  A61M1/12

Abstract: A ventricular assist device comprises a sheet of hydraulically actuated material that can be affixed to prescribed locations on the surface of the heart to assist areas of the heart that do not contract normally. The material is comprised of a network of contractible unit cells that individually contract when fluid is pumped into them. These unit cells are connected together in a network that causes the sheet to contract radially inward. This contraction causes the sheet to transmit forces to the heart to assist in its natural contraction. A sensing function coordinates the contraction of the sheet with the contraction of the heart. The change in shape of the device is accomplished by distributing pressurized fluid throughout the spaces of the device by way of a network of channels. When pressure is removed from the fluid system, it assumes a deenergized “rest” position in which it does not transmit any forces to the surface of the heart. This property of the device prevents the device from inhibiting the heart's natural contractions in the event of a failure of the device or a loss of hydraulic power.

Abstract translation: 心室辅助装置包括一片液压致动材料片，该片材可以固定在心脏表面上的规定位置，以帮助心脏不能正常收缩的区域。 该材料由可收缩的单体电池网络组成，当将流体泵入其中时单独收缩。 这些单电池在网络中连接在一起，导致片材向内径向收缩。 这种收缩导致片材将力传递到心脏以帮助其自然收缩。 检测功能可以协调纸张与心脏收缩的收缩。 设备形状的变化通过通过通道网络将加压流体分配到设备的整个空间中来实现。 当压力从流体系统移除时，它承受断电的“静止”位置，在该位置，它不会将任何力传递到心脏表面。 该装置的这种特性防止装置在装置发生故障或液压动力损失的情况下抑制心脏的自然收缩。

公开(公告)号：US20090030291A1

公开(公告)日：2009-01-29

申请号：US12175803

申请日：2008-07-18

Applicant: David O'Brien ,  Jason White ,  Michael A. Fonseca ,  Jason Kroh ,  Mark Allen ,  David Stern

Inventor： David O'Brien ,  Jason White ,  Michael A. Fonseca ,  Jason Kroh ,  Mark Allen ,  David Stern

IPC: A61B5/00

CPC classification number: A61B5/02014 ,  A61B5/0031 ,  A61B5/076 ,  Y10T29/49016 ,  Y10T29/49069 ,  Y10T29/49071 ,  Y10T29/49073

Abstract: A wireless sensor for indicating a physical state within an environment includes a unitary housing defining a cavity. A structure located within the cavity of the housing has elements providing capacitance, the elements being arranged such that the distance and thereby the capacitance of the structure changes when a physical state of the environment changes. The structure has a resonant frequency based at least in part on the capacitance of the structure when in the presence of a fluctuating electromagnetic field. When the sensor is positioned within an environment and is subjected to a fluctuating electromagnetic field, the resonant frequency indicates the physical state of the environment.

Abstract translation: 用于指示环境中的物理状态的无线传感器包括限定空腔的整体壳体。 位于壳体的腔内的结构具有提供电容的元件，该元件被布置成使得当环境的物理状态改变时，结构的距离以及由此的结构的电容改变。 当存在波动的电磁场时，该结构至少部分地基于结构的电容。 当传感器位于环境中并且经受波动的电磁场时，谐振频率表示环境的物理状态。