Guidance System for Puncture Procedures

A new laser guidance system significantly improves the accuracy of puncture procedures guided by computed tomography (CT). Called SimpliCT, the system was developed by NeoRad AS (Oslo, Norway).

Using CT as a one-dimensional reference, doctors use needles and other interventional tools to perform biopsies, collect fluid, and perform other minimally invasive alternatives to surgery. Usually, doctors perform punctures without any guidance, using a freehand technique to determine the desired angle for tool insertion. After partial insertion based on the initial CT scan, a second scan is taken to determine the tool's proximity to the target. Since accuracy is critical, often a doctor will need to reposition or reinsert the needle, which can exhaust the patient and increase the rate of complications.

SimpliCT solves the problem. Entry angles from the CT scan are input into the unit, which emits a correspondingly angled laser beam from a mechanical arm suspended above or beside the body. The doctor angles the needle to match the laser beam and partially inserts it into the body. By keeping the needle in line with the laser beam, the correct angle and position are maintained. After a CT scan confirms the correct insertion angle, the needle is advanced to the target.

Medrad, Inc. (Indianola, PA, USA) will be the exclusive worldwide distributor of SimpliCT, according to the terms of a recent multiyear agreement between Medrad and NeoRad. "We have heard out customers talk about the need for this kind of device, and now we can provide it,” says John P. Friel, president and CEO of Medrad.



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