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US 2010/0145225 A1Published application
Cytology Device
AssigneeWilson-Cook Medical Inc.
InventorsDavid J. Desilets, Richard W. Ducharme
Life of this patent
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Abstract
A cytology device and a method of use thereof are described. The cytology scraper comprises a scraping element that provides increased tissue removal capabilities over conventional cytology brushes. The edges of the scraping element can also simultaneously dilate strictures during the tissue removal procedure.
Claims21
A cytology device, comprising:
- a helically coiled cable comprising torsional rigidity sufficient to transfer rotational motion from a proximal portion of the cable to a distal portion of the cable, the distal portion adapted to be introduced into a body lumen, the proximal portion adapted to remain outside of the lumen so as to allow manipulation of the distal portion;
- a scraper element operably connected to the distal portion, the scraper element comprising at least one cutting edge configured to excise tissue cells upon rotational movement of the scraper element;
- and
- a reservoir adapted to receive the excised tissue.
1 more element
The device of claim 7, wherein a wire guide extends through a wire guide lumen and exits through a distal aperture of the scraping element.
A cytology device, comprising:
- a helically coiled cable comprising torsional rigidity sufficient to transfer rotational motion from a proximal portion of the cable to a distal portion of the cable;
- a scraper element operably connected to the distal portion, the scraper element comprising at least one cutting edge configured to excise tissue cells upon rotational movement of the scraper element,
- a reservoir adapted to receive the excise tissue;
- and
- a retractable outer sheath disposed over the scraping element for retaining excised tissue within the reservoir.
2 more elements
A method of performing a cytology procedure, comprising the steps of:
- (a) providing a cytology device comprising:
- a helically coiled cable comprising torsional rigidity sufficient to transfer rotational motion from a proximal portion of the cable to a distal portion of the cable, the distal portion adapted to be introduced into a body lumen, the proximal portion adapted to remain outside of the lumen so as to allow manipulation of the distal portion;
- and
- a scraper element operably connected to the distal portion, the scraper element comprising at least one cutting edge configured to excise tissue cells upon rotational movement of the scraper element;
- and
- a reservoir adjacent to the at least one cutting edge and adapted to receive the excise tissue;
- (b) advancing the cytology device to the target tissue site;
- (c) rotating the proximal portion of the coiled cable so as to engage and excise the target tissue with the cutting edges;
- and
- (d) collecting tissue cells in the reservoir.
7 more elements
Dependencies are inferred from the claim text.