ARTHUR ANTHONY JANICKI,OSCAR THOMAS JANICKI,THOMAS I. JANICKI
申请号：
BR112014008942
公开号：
BR112014008942A2
申请日:
2012.10.15
申请国别(地区):
BR
年份:
2017
代理人:
摘要：
abstract needle guidance system a system, device and method to determine the location of a needle as it penetrates through a tissue and into a desired site, such as the epidural space, are described. The system contains a light guide, a light source, a light sensor, and a logic unit. when the tip of the needle traverses the relatively dense ligamantum flavum, the reflecting plane of the ligament is positioned at or near zero distance relative to the tip of the device. once the tip enters a less dense epidural space the distance to the reflecting plane becomes greater than zero thus producing a drop in intensity of the reflected light. that drop in the intensity of the reflected light is measured by the light sensor and interpreted by a logic unit to be consistent with entry into the epidural space, allowing the system to provide a signal indicating entry into the epidural space. ___________________________________________________________________________ translation of the abstract patent summary: "needle guidance system". The invention relates to a system and device for determining the location of a needle as it penetrates through a tissue and into a desired location, such as the epidural space. system 1000 contains a light guide (1020), a light source (1040), a light sensor (1050), and a logic unit (1060). when the needle tip 1010 crosses the relatively dense ligamantum flavum, the ligament reflection plane will be positioned at or near zero with respect to the tip of the device. Once the tip enters a less dense epidural space, the distance to the reflection plane is greater than zero, thus producing a drop in reflected light intensity. This drop in reflected light intensity is measured by the light sensor and interpreted by a logical unit to be consistent with entry into the epidural space, allowing the system to provide a signal indicating entry into the epidural space.abstract needle guidance system a system, device and method to determine the location of a need
