A MICROMACHINED PRESSURE-TIME RECORDER FOR MEDICAL APPLICATIONS

被引：2

作者：

GADGIL, PN

PARAMESWARAN, M

MCEWEN, J

机构：

[1] SIMON FRASER UNIV,SCH ENGN SCI,BURNABY V5A 1S6,BC,CANADA

[2] WESTERN CLIN ENGN,RICHMOND V7A 1K6,BC,CANADA

来源：

SENSORS AND ACTUATORS A-PHYSICAL | 1994年 / 45卷 / 01期

基金：

加拿大自然科学与工程研究理事会;

关键词：

MICROMACHINING; PRESSURE-TIME DEVICE;

D O I：

10.1016/0924-4247(94)00816-7

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We present a simple micromachined device to determine the pressure-time product for medical and surgical applications. The device operation is based on the flow of a viscous fluid through a micromachined channel under applied pneumatic pressure. A fluid-dynamical model for flow of a viscous fluid through a microchannel, various channel geometries, the device fabrication and its operation under constant applied pneumatic pressure are presented. The length of an advancing fluid column in the microchannel is proportional to the magnitude of the pressure-time product. Castor oil is employed as the working fluid. Devices capable of measuring the pressure-time product from 75 to 3000 psi min have been fabricated and tested. The simple design configuration, operation without an external electrical power supply and direct measurement without any additional circuitry are some of the attractive features of such as pressure-time recorder. Other possible applications of such a device are also described briefly.

引用

页码：17 / 21

页数：5