Echogenic markers on gi medical devices

Details Echogenic markers on gi medical devices Echogenic markers on gi medical devices

A - Human Necessities

61

B

A61B 10/00 (2006.01) A61B 17/22 (2006.01) A61B 17/34 (2006.01) A61B 19/00 (2006.01)

Patent

CA 2599442

An endoscopic ultrasound-guided system and method for monitoring the location of a device contained within intraluminal and extraluminal regions of a patient is described. The endoscopic ultrasound-guided system includes a linear echoendoscope, a device, and a wire guide. The device and wire guide contain echogenic surfaces which enable transducers placed at the distal end of the linear echoendoscope to ultrasonically monitor the location of the devices. When the echogenic surface of the device encounters incident ultrasound waves emitted from a series of linear array transducers, a real- time ultrasonic image of the device is generated as the incident ultrasound waves reflect off the echogenic surfaces and propagate back towards the transducers. The surgeon receives the real-time ultrasonic image of the device and then can determine the location of the device within the intraluminal or extraluminal region of the patient. After determining the location of the device, the surgeon can adjust the path of the device to ensure it is guided to the target site.

L~invention concerne un système endoscopique guidé par ultrasons et un procédé de surveillance de l~emplacement d~un dispositif contenu dans des régions intraluminales et extraluminales d~un patient. Le système endoscopique guidé par ultrasons contient un échoendoscope linéaire, un dispositif et un guide-fil. Le dispositif et le guide-fil contiennent des surfaces échogènes permettant à des transducteurs placés à l~extrémité distale de l~échoendoscope linéaire de surveiller par ultrasons l~emplacement des dispositifs. Lorsque la surface échogène du dispositif rencontre des ondes ultrasoniques incidentes émises d~une série de transducteurs à matrices linéaires, une image ultrasonique en temps réel du dispositif est générée tandis que les ondes ultrasoniques incidentes rebondissent contre les surfaces échogènes et retournent vers les transducteurs. Le chirurgien reçoit l~image ultrasonique en temps réel du dispositif et peut déterminer l~emplacement du dispositif dans la région intraluminale ou extraluminale du patient. Après avoir déterminé l~emplacement du dispositif, le chirurgien peut ajuster le trajet du dispositif pour s~assurer qu~il est guidé vers le site cible.

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