Method and device for obtaining continued transdermal access

Details Method and device for obtaining continued transdermal access Method and device for obtaining continued transdermal access

1992-03-20

1994-02-01

Rosenbaum, C. Fred

Surgery

Means for introducing or removing material from body for...

Material introduced into and removed from body through...

604164, 604175, 604264, 604281, A61M 3100

Patent

active

052827887

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.

REFERENCES:
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patent: 4810244 (1989-03-01), Allen
patent: 5085631 (1992-02-01), Leighton
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patent: 5112310 (1992-05-01), Grobe
patent: 5158545 (1992-10-01), Trudell et al.
patent: 5171226 (1992-12-01), McCrory

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