# US 4,396,022 A · Endometrial tissue sampling apparatus

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 4,396,022 A
- Document ID: US4396022A
- Status: Granted
- Kind: A
- Application number: 06/171,086
- Filed: 1980-07-22
- Granted: 1983-08-02
- Earliest claimed: 1980-07-22
- Inventors: Alvin J. Marx
- Web page: https://patentgrep.com/patent/US4396022A

## CPC

- A61B 10/0291: {for uterus (A61B10/0045 takes precedence)}
- A61B 10/04: Endoscopic instruments, e.g. catheter-type instruments
- A61B 2090/062: {penetration depth}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

Sampling apparatus for securing and removing endometrial tissue for pathological examination includes a thin elongated flexible sheath with a curved end portion terminating at an annular metallic tissue-scraping leading member. In use, the sheath with an inner path-dilating obturator is inserted into the endometrial cavity. The obturator is then removed, and a syringe attached to place the sheath under vacuum. The composite apparatus is scraped across the endometrium to remove tissue samples which ultimately repose within the syringe for subsequent processing and analysis.

## Claims

### Claim 1

In combination in endometrial tissue curretting apparatus, an elongated solid, unbroken wall sheath having an outer diameter in the range 2-4 mm, said sheath having a substantially straight major extent and a curved minor end extent to facilitate insertion through the exocervix, squamo-columar junction and endocervical canal into the endometrial cavity, a tissue scraping, sharpened circumferential end-sampling metallic cylinder retained by and projecting from said sheath minor end portion, path dilating obturator means adapted to reside within said sheath and being longer than said sheath to extend therefrom when reposing within said sheath upon insertion to obviate spurious tissue sampling upon insertion, said sheath having first connection means at the end thereof opposite said minor end extent, and syringe means including second connection means adapted for communicating engagement with said first connection means of said sheath.

### Claim 2 (depends on 1)

A combination as in claim 1 wherein said first connection means comprises cylindrical means and ferrule means for securing said cylindrical means to said sheath, and wherein said syringe includes projecting means for engaging said cylindrical means.

### Claim 3 (depends on 1, 2)

A combination as in claim 1 or 2 further comprising means secured to said sheath and having a predetermined fixed alignment relationship with said sheath curved minor end extent for signalling the then-obtaining orientation of said curved sheath end extent.