Method and device for obtaining continued transdermal access
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United States of America Patent
Stats
-
Feb 1, 1994
Issued Date -
N/A
app pub date -
Mar 20, 1992
filing date -
Feb 26, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An assembly for use in drainage of an abscess comprises an outer tubular member provided in a distal end portion with a plurality of longitudinal slits. The distal end portion of the tubular member has a spring bias tending to form the distal end portion into a substantially spherical expanded configuration to anchor the distal end portion of the tubular member in an abscess. An inner tubular member or obturator is inserted into the outer tubular member and has a distal end provided with a cutting edge projecting from the outer tubular member. Locking components on the obturator and the outer tubular member serve to maintain the latter in a stretched out cylindrical configuration enabling insertion of the distal end portion into an abscess. A needle on the distal end of the tubular member serves to inject a quantity of anesthetic into the patient at the abscess site. A similar structure is disclosed in an intravenous catheter assembly.
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