# US 5,348,023 A · Curetting instrument and method

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- Number: US 5,348,023 A
- Document ID: US5348023A
- Status: Granted
- Kind: A
- Application number: 07/869,739
- Filed: 1992-04-16
- Granted: 1994-09-20
- Earliest claimed: 1992-04-16
- Inventors: Bruce McLucas
- Web page: https://patentgrep.com/patent/US5348023A

## CPC

- A61B 10/0291: {for uterus (A61B10/0045 takes precedence)}
- A61B 17/24: for use in the oral cavity, larynx, bronchial passages or nose (for medical inspection of cavities or tubes in the body A61B1/00); Tongue scrapers
- A61B 17/320708: {Curettes, e.g. hollow scraping instruments}
- A61B 17/22: Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

An improved curette is disclosed having a spoon-shaped scoop attached to an elongated tapered handle. Substantially the entire periphery of the scoop is sharpened, allowing the curette to be used in a lateral or rotating motion to remove and collect tissue samples. The new curette also has a sharpened interior edge on its forward end allowing curetting when drawing the instrument backward. Small drainage holes through the bottom of the scoop allow the curette to efficiently capture more tissue.

## Claims

### Claim 1

A method of obtaining tissue from inside a living body, the method comprising the steps of:
inserting a curette inside the body, said curette comprising a handle, an oval spoon-shaped member connected to said handle for collecting the tissue, a sharp edge formed on substantially the entire upper perimeter of said spoon-shaped member, and an overhanging sharp edge formed on an inside edge of said upper perimeter on a forward end of said collection means for removing the tissue from the body;
moving said inserted curette to cause one or more cutting edges on said curette to cut tissue and place said tissue in the spoon-shaped member;
removing tissue from the inside of the body with said curette;
collecting the removed tissue in said spoon-shaped member of said curette; and
withdrawing said curette and said collected tissue from the body.

### Claim 2

A curette comprising:
an elongated handle having a longitudinal axis;
removal means for cutting or scraping tissue;
collection means for retaining the tissue, said collection means being attached to an end of said handle, said collection means being concave and spoon shaped and having an upper periphery, said upper periphery being oval-shaped and having an outer edge lying substantially in a plane;
said removal means including a sharp edge formed on and around said outer edge of said upper periphery of said collection means;
said sharp edge extends substantially entirely around said outer edge of the upper periphery; and
said removal means further includes an overhanging sharp edge formed on an inside edge of said upper periphery on a forward end of said collection means opposite said handle.

### Claim 3

A curette comprising:
an elongated handle having a longitudinal axis;
removal means for cutting or scraping tissue;
collection means for retaining the tissue, said collection means being attached to an end of said handle, said collection means being concave and spoon shaped and having an upper periphery, said upper periphery being oval-shaped and having an outer edge lying substantially in a plane; and
said removal means including a sharp edge formed on and extending substantially entirely around said outer edge of said upper periphery of said collection means and an overhanging sharp edge formed on an inside edge of said upper periphery on a forward end of said collection means opposite said handle.