The Utility of a Drainage Needle for Percutaneous Abscess Drainage
Simon C. H. Yu1
1 Department of Diagnostic Radiology and Organ Imaging, Prince of Wales
Hospital, The Chinese University of Hong Kong, 30-32 Ngan Shing St., Shatin,
Hong Kong, China.
Fig. 1APhotographs of cannula. Lines at bottom of photographs
represent measurement scale in millimeters. Photograph of distal 12 mm of
cannula at tip end shows three side holes arranged in a row, separated from
adjacent row by 3 mm.
Fig. 1BPhotographs of cannula. Lines at bottom of photographs
represent measurement scale in millimeters. Photograph of distal 12 mm of
cannula at tip end shows six side holes on both sides of cannula, with three
holes on each side, projected in profile. The most distal hole is located 1 mm
away from tip of cannula.
Fig. 1CPhotographs of cannula. Lines at bottom of photographs
represent measurement scale in millimeters. Photograph shows tip of cannula
with diamond-tip trocar assembled.