公开(公告)号：US20030088169A1

公开(公告)日：2003-05-08

申请号：US09992875

申请日：2001-11-06

Applicant: Leica Microsystems Inc.

Inventor： Christopher J. Percival ,  Douglas H. Hoover ,  David A. Luce

IPC: A61B003/16

CPC classification number: A61B3/0058 ,  A61B3/0091 ,  A61B3/152 ,  A61B3/165 ,  A61B2560/0456

Abstract: A hand-held non-contact tonometer comprises a housing having a handle portion for enclosing a rechargeable D.C. power source and an upper head portion for enclosing alignment and tonometric measurement systems of the tonometer. An operator can directly view the patient's eye along an optical axis extending through the head portion of the housing, and an instructional display image is superimposed with the directly viewed image of the eye to guide the operator in X-Y-Z alignment based on data supplied by an afocal position detection system. A transceiver for wireless data exchange and a recharging support stand are also provided.

Abstract translation: 手持式非接触式眼压计包括具有用于封闭可再充电直流电源的手柄部分和用于封装眼压计的对准和测量计量系统的上部头部的壳体。 操作者可以沿着延伸穿过外壳头部的光轴直接观察患者的眼睛，并且将指导性显示图像与眼睛的直接观看图像叠加，以基于无焦点提供的数据引导操作者进行XYZ对准 位置检测系统 还提供了用于无线数据交换的收发器和充电支持支架。

公开(公告)号：US20030088168A1

公开(公告)日：2003-05-08

申请号：US09992368

申请日：2001-11-06

Applicant: Leica Microsystems Inc.

Inventor： David A. Luce

IPC: A61B003/16

CPC classification number: A61B3/165

Abstract: A metered fluid pump for a non-contact tonometer comprises a piston and a cylinder configured such that a plenum chamber defined thereby develops a massive leak through an exhaust port at a predetermined displacement position of the piston relative to the cylinder, thus reducing unnecessary impulse energy delivered to the eye that is a source of patient discomfort. A metering adjustment drive is provided for adjusting the piston and cylinder in a relative manner to meter the volume of fluid delivered before the leak develops, such that a suitable fluid pulse can be delivered to the eye.

Abstract translation: 用于非接触式眼压计的计量流体泵包括活塞和气缸，所述气缸构造成使得限定的增压室在活塞相对于气缸的预定位移位置处通过排气口发生大量泄漏，从而减少不必要的脉冲能量 传递给眼睛，这是患者不适的根源。 提供了一种计量调节驱动器，用于以相对方式调节活塞和气缸，以计量在泄漏发生之前递送的流体的体积，从而可以将合适的流体脉冲输送到眼睛。

公开(公告)号：US20030088170A1

公开(公告)日：2003-05-08

申请号：US09993281

申请日：2001-11-06

Applicant: Leica Microsystems Inc.

Inventor： Bruce Siskowski ,  David A. Luce

IPC: A61B003/16

CPC classification number: A61B3/165

Abstract: A non-contact tonometer comprises a fluid pump system configured and mounted to dissipate vibration energy to reduce the effect of vibrations on measurement components caused by the stroke of a piston with respect to a cylinder in the fuid pump system. In a preferred embodiment, a compression chamber receiving a piston and plenum chamber containing a pressure sensing device are spaced apart from one another and connected by a flow tube formed of a vibration damping material, and at least one vibration damping element is provided between the cylinder and a support frame of the non-contact tonometer.

Abstract translation: 非接触式眼压计包括流体泵系统，其被构造和安装成消散振动能量，以减少由活塞相对于引导泵系统中的气缸引起的对测量部件的振动的影响。 在优选实施例中，容纳具有压力感测装置的活塞和增压室的压缩室彼此隔开并通过由减振材料形成的流动管连接，并且至少一个减振元件设置在气缸 和非接触眼压计的支撑框架。

公开(公告)号：US20030092979A1

公开(公告)日：2003-05-15

申请号：US10037327

申请日：2001-11-09

Applicant: Leica Microsystems Inc.

Inventor： David A. Luce ,  David G. Kelkenberg

IPC: A61B003/16

CPC classification number: A61B3/165

Abstract: A non-contact tonometer comprises a fluid pump system having a linear proportional solenoid for driving a piston of the fluid pump system to generate a fluid pulse in a predetermined and controlled manner. The energizing current to the linear proportional solenoid is dictated by data stored in a digital look-up table.

Abstract translation: 非接触式眼压计包括具有线性比例螺线管的流体泵系统，用于驱动流体泵系统的活塞以预定和受控的方式产生流体脉冲。 到线性比例螺线管的通电电流由存储在数字查找表中的数据决定。

公开(公告)号：US20030088171A1

公开(公告)日：2003-05-08

申请号：US10010323

申请日：2001-11-08

Applicant: Leica Microsystems Inc.

Inventor： Bruce Siskowski ,  David A. Luce

IPC: A61B003/16

CPC classification number: A61B3/165

Abstract: A fluid pump system of a non-contact tonometer is numerically simulated through its compression stroke by a simulation software program. System dynamic behavior is modeled for a variety of piston diameters, whereby an optimal piston diameter or range of piston diameters is selected in view of stoke length limitations and target applanation pressure requirements.