A new type of needle guide, a retreating-stop needle guide, is proposed and compared with existing variable-angle style needle guides. Compared to existing designs, this design gives the user finer control over the depth of needle insertion as well as preventing excessive needle advancement. For a subset of ultrasound guided procedures, particularly those that may benefit from out-of-plane approaches, retreating-stop needle guides could potentially improve needle placement. A prototype retreating-stop needle guide was constructed which has measurement resolution of 5 mm and a depth range of 3.0–7.5 cm, which is superior to commonly available existing needle guides. Resolutions of 2–3 mm are theoretically possible with this technique.
The Retreating-Stop Needle Guide as an Alternative to Variable-Angle Needle Guides
Manuscript received March 27, 2014; final manuscript received January 9, 2015; published online January 27, 2015. Assoc. Editor: John LaDisa.
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Neice, A. (March 1, 2015). "The Retreating-Stop Needle Guide as an Alternative to Variable-Angle Needle Guides." ASME. J. Med. Devices. March 2015; 9(1): 015003. https://doi.org/10.1115/1.4029581
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