Spatula for collecting cervical cancer cells

Claim 2

In a spatula for collecting cancer cells within the cervical canal, said spatula including a handle portion to be gripped by the physician, a shank extending longitudinally from the handle portion, and a scraping head at the end of the shank, a scraping head including a cervical canal entering finger-like portion having a longitudinal inner surface which is to scrape cells from the wall of the cervical canal when the spatula is rotated along the longitudinal axis of the spatula, the improvement wherein said longitudinal inner surface of the finger-like portion of said scraping head comprises two adjacent side-by-side longitudinally extending sections, one of which has a rough surface which scrapes cells from the wall of the cervical canal, and the other of which has a relatively smooth surface, said rough surface section being located closer to the longitudinal center axis of said finger-like portion than said smooth surface section, so that said smooth section rather than said rough surface section thereof engages the wall of the cervix during the longitudinal movement of the finger-like portion into and out of the cervical canal, and said rough surface section engaging the walls of the cervical canal to scrape cells therefrom when the inner side of the head is pressed against the cervical canal wall and the spatula is rotated about its longitudinal axis in a direction where said smooth surface section is on the trailing side of the rotating head.

Claim 3

In a spatula for collecting cancer cells within the cervical canal, said spatula including a handle portion to be gripped by the physician, a shank extending longitudinally from the handle portion, and a scraping head at the end of the shank, and scraping head having a laterally extending leg projecting from one side of the head which leg is adapted to engage the outer surface of the cervix and a cervical canal entering finger-like portion projecting longitudinally beyond said leg, which finger-like portion has on the same side of the head from which said leg projects a longitudinal inner surface which is to scrape cells from the wall of the cervical canal when the spatula is rotated along the longitudinal axis of the spatula, the improvement wherein said longitudinal inner surface of the finger-like portion of said head comprises to adjacent side-by-side longitudinally extending sections, one of which has a rough surface which merges with a rough inner surface of said leg so that the inner sides of said finger-like portion and leg of said head scrape cells from the inner and outer surfaces of the cervix, the other longitudinal section of said finger-like portion having a relatively smooth surface, said rough surface section of the finger-like portion being located closer to the center axis of the finger than said smooth surface section thereof so that said smooth surface section rather than said rough surface section thereof engages the wall of the cervix during the longitudinal movement of the finger-like portion of the head into and out of the cervical canal, and said rough surface longitudinal section engaging the wall of the cervical canal to scrape cells therefrom when the inner leg containing side of the head is pressed against said cervical canal wall and the spatula is rotated about its longitudinal axis in a direction where said smooth surface longitudinal section is on the trailing side of the rotating head.

Claim 4

In a spatula for collecting cancer cells within the cervical canal, said spatula including a handle portion to be gripped by the physician, a shank extending longitudinally from the handle portion, and a scraping head at the end of the shank, and scraping head having a laterally extending leg projecting from one side of the head which leg is adapted to engage the outer surface of the cervix and a cervical canal entering finger-like portion projecting longitudinally beyond said leg, which finger-like portion has on the same side of the head from which said leg projects a longitudinal inner surface which is to scrape cells from the wall of the cervical canal when the spatula is rotated along the longitudinal axis of the spatula, the improvement wherein said longitudinal inner surface of the finger-like portion of said head comprises to adjacent side-by-side longitudinally extending sections, one of which has a rough surface which merges with a rough inner surface of said leg so that the inner sides of said finger-like portion and leg of said head scrape cells from the inner and outer surfaces of the cervix, the other longitudinal section of said finger-like portion having a relatively smooth surface, said rough surface section of the finger-like portion being located closer to the center axis of the finger than said smooth surface section thereof so that said smooth surface section rather than said rough surface section thereof engages the wall of the cervix during the longitudinal movement of the finger-like portion of the head into and out of the cervical canal, and said rough surface longitudinal section engaging the wall of the cervical canal to scrape cells therefrom when the inner leg containing side of the head is pressed against said cervical canal wall and the spatula is rotated about its longitudinal axis in a direction where said smooth surface longitudinal section is on the trailing side of the rotating head.

Claim 5

The spatula of claim 1 or 2 wherein the rough surface longitudinal section of the inner side of the finger-like portion of the scraping head is in a laterally inclining plane.

Claim 6

The spatula of claim 1 or 2 wherein said rough longitudinal surface of the finger-like portion of the scraping head is formed by laterally extending grooves.

Claim 7

The spatula of claim 1 or 2 wherein said rough longitudinal surface of the finger-like portion of the scraping head is formed by laterally extending grooves which also incline with respect to a line extending transversely to the longitudinal axis of the spatula, to increase the scraping action thereof.

Claim 8

The spatula of claim 1 or 2 wherein said smooth section of said scraping head joins said rough surface section along a step formed in the scraping head, which step forms a collection shoulder for the collected specimen as the spatula is rotated within the cervical canal, thereby inhibiting leakage of the specimen material as the spatula is rotated in a given direction within the cervical canal.

Claim 9

A spatula of claim 1 wherein said finger-like portion has flat parallel side faces extending between said longitudinal face and said longitudinal inner surface thereof.