Fluoro-Free Guidewire for Improved Colonscope
University of CA researchers have developed a non-fluoroscopy method for monitoring the configuration and positioning of various surgical instruments relative to each other including guidewires, catheters, endoscopes, stents, dilators, and tissue clips. The present invention allows a guidewire to use electromagnetic signals which are detected and displayed on a monitor. The configuration of the guidewire shaft may is defined by the electromagnetic fields. In further contrast to prior designs, the configuration of the guidewire may be visualized on a display unit in real time during a procedure while the guidewire shaft is inserted in a patient's body. Also provided by the present invention is an indicator clip that differs from past designs in that, instead of injecting contrast into the GI tract in order to "tattoo" a certain area which can be visualized on fluoroscopy, the indicator clip utilizes electromagnetic field sensing. The device indicator of the present invention similarly differs from past designs in that devices previously were not marked for radiographic contrast under fluoroscopy, whereas the electromagnetic device indicator provides electromagnetic location information for a device to which it may be attached. Embodiments of the present invention provide an electromagnetic way of marking tissue, devices and guidewires relative to each other.In another embodiment, an electromagnetic device indicator may be monitored and is an accessory which can be placed onto any existing endoscope or accessory device. A small profile electromagnetic device indicator can be taped, strapped, or fastened to an endoscope or device (such as a stent deployment catheter or a Stretta radiofrequency catheter, for example). One or several device indicators could be used to locate the positions of multiple devices. Each indicator would individually be seen on a detector monitor. The indicator clip and the electromagnetic device indicator could be used separately or together. In addition, embodiments of the present invention provide more general applicability, for example, by allowing the monitoring of surgical instruments other than endoscopes.
Patent Number: US8412311B2
Application Number: US2006573220A
Inventor: Kenneth, J. Chang
Priority Date: 13 Sep 2004
Priority Number: US8412311B2
Application Date: 17 May 2007
Publication Date: 2 Apr 2013
IPC Current: A61B000600
US Class: 600434 | 600104 | 600424 | 60416413 | 606151
Assignee Applicant: The Regents of the University of California
Title: Fluoroscopy-free guidewire systems and methods
Usefulness: Fluoroscopy-free guidewire systems and methods
Summary: For positioning and monitoring the position and configuration of surgical implements such as dilators, stents, catheters, jejunostomy tubes and endoscopes.
Novelty: Monitoring system for positioning and monitoring surgical devices, detects electromagnetic fields from electromagnetic indicator coils attached to surgical instrument, and display location and configuration of instrument
生物医学
医疗装置
8412311
Tech ID/UC Case 18838/2004-556-0 Related Cases 2004-556-0
美国
