# K133312: Expect Slimline Endoscopic Ultrasound Aspiration Needle

- Pathway: 510(k) (Special)
- Applicant: Boston Scientific Corporation
- Decided: Jan 3, 2014 after 67 days
- Product code: ODG (Endoscopic Ultrasound System, Gastroenterology-Urology)
- Device class: 2
- Regulation: 21 CFR 876.1500
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 5 generations back to K904667 (1990). 8 ancestors in all.
8 later devices descend from it; 3 cite it directly.
0 of 17 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K110030: Expect Endoscopic Aspiration Needle, Boston Scientific Corp (2011) Summary page 2.

## Cited in the summary but kept off the family tree
- K121198: BW685, BW685S, Biegler GmbH (2012). Not matched in our reading of the summary (scans can blur digits), so it is kept off the family tree

## Most influential descendants
- K160845: Acquire Endoscopic Ultrasound Fine Needle Biopsy (FNB) Device (2016), 4 descendants of its own
- K172309: Endoscopic Ultrasound Aspiration Needle (2017), 1 descendant of its own
- K163058: Expect Slimline (SL) Endoscopic Ultrasound Aspiration Needle (2017), 1 descendant of its own
- K251542: InstaFAN (2025), 0 descendants of its own
- K223616: Acquire™ S Endoscopic Ultrasound Fine Needle Biopsy (FNB) Device (2022), 0 descendants of its own

## Indications for use
The Expect™ Slimline (SL) Needle is designed to sample targeted submucosal and extramural gastrointestinal lesions through the accessory channel of a curvilinear echoendoscope.

Source page: https://510kreport.com/device/K133312
Methodology: https://510kreport.com/methodology