Surgery – Truss – Pad
Patent
1995-06-07
1998-04-14
Hindenburg, Max
Surgery
Truss
Pad
A61B 1000
Patent
active
057381097
ABSTRACT:
A medical device performs simultaneous brush cytology and scrape biopsy on structures within an organic duct by collecting cells and tissue on a brush having irregular semi-rigid bristles, preferably formed as the hook portion of a hook and pile fastener (e.g., the hook potion of a Velcro pad). A wire guided catheter has a brush strip located near a distal end for insertion into the duct. Once the distal end and brush are positioned at a selected location within the duct, the catheter is pushed and pulled back and forth to gather cells and scrapings from the selected location, which accumulate in the irregular bristles. The catheter can be enclosed in a retractable sleeve during insertion and/or withdrawal. An enlargement at the distal end of the catheter assists in opening the duct to admit the brush. A radio-opaque marker is externally detectable to assist in locating the brush at the selected location. The relatively stiff irregular bristles improve the extent to which cells and tissues can be collected and permit collection of enough tissue to provide a biopsy sample, without substantial risk of perforation of the duct.
REFERENCES:
patent: 513361 (1894-07-01), Cox et al.
patent: 3196876 (1965-07-01), Miller
patent: 4465072 (1984-08-01), Taheri
patent: 4726373 (1988-02-01), Greengrass
patent: 5201323 (1993-04-01), Vermeulen
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