510(k) · Cleared

Cleared

One Dimensional Water Phantom, WP 1D

K032594510(k) TraditionalCleared Sep 5, 200314-day reviewClass II21 CFR 892.5050

Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly, last Nov 3, 2026

Wellhofer Dosimetrie · IYE Accelerator, Linear, Medical

Cleared on Sep 5, 2003 as substantially equivalent to K943199 (Medtec, Inc., 1994) after a 14-day review. Its family tree reaches back 1 generation to 1994. 1 later device descends from it.

Decided: Sep 5, 2003
Review: 14 days
Class: Class II
Product code: IYE
Recalls: None
Predicates: 1

Its longest line of descent runs back 1 generation to K943199 (1994). 1 later device descends from it, 1 citing it directly.

By dateBy generation

Root · 1 generation backK943199 Motorized Depth Dose ApparatusMedtec, Inc. · 1994
This deviceK032594 One Dimensional Water Phantom, WP 1DWellhofer Dosimetrie · 2003
Descendant · cites it directly · 0 of its ownK191821 Blue Phantom PTIba Dosimetry GmbH · 2020

Most influential descendants

Showing 1 of 1 · See all

K191821Blue Phantom PTIba Dosimetry GmbH · 2020 · cites it directly0descendants

View FIG. 1 as a table

Line of descent and top descendants

Generation	Number	Device	Applicant	Decided	Recalls
−1	K943199	Motorized Depth Dose Apparatus	Medtec, Inc.	1994	—
0 (this device)	K032594	One Dimensional Water Phantom, WP 1D	Wellhofer Dosimetrie	2003	—
+1	K191821	Blue Phantom PT	Iba Dosimetry GmbH	2020	—

Descendants by year cleared

Year cleared	Devices	With a Class I recall
2020	1	0

FIG. 1 — Lineage of K032594, 1994–2020Source: FDA 510(k) summaries, read by 510(k) Report · How lineage is built

Sources: FDA 510(k) database (decision fields), the FDA summary (predicates and indications), FDA recall and enforcement reports, and MAUDE; processed by 510(k) Report. Verify on FDA.gov · Methodology and accuracy.

Planning a device in IYE? A 510(k) Report weighs predicate choices, recall history and review times for a new device like this one.

Top candidate predicates for a new IYE device

#1 K252977 Halcyon, Ethos Radiotherapy System (5.0)score 18.8 · 18 generations · no Class I recall
#2 Held for the reportin the report
#3 Held for the reportin the report

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What was it cleared against? (1)

Devices the submitter claimed this one is substantially equivalent to (*), and reference devices cited for a specific test or feature (†), as written in the FDA summary.

Type	Number	Device	Applicant	Decided	Recalls
*	K943199	Motorized Depth Dose Apparatus Summary page 1 …tric functions only. ( 3 ) Technological comparison: The WP 1D is a clinical Reference Dosimetry System similar to the MEDTEC Inc. Depth Dose Apparatus, K943199, 12/07/1994. Both devices consist o f an acrylic water tank equipped with a one-dimensional scanning mechanic to posi…	Medtec, Inc.	1994	—

Also cleared against K943199: 1 other device →

What descends from it? (1)

1 later device cites it directly; ranked here by how many devices descend from each in turn.

Number	Device	Applicant	Decided	Descendants
K191821	Blue Phantom PT	Iba Dosimetry GmbH	2020	0

Has anything in its family been recalled? (0 Class I)

No FDA recall names this device.

No ancestor or descendant has a Class I recall.

What does this lineage say?

Its one ancestor has no recall.
Of its descendants, K191821 (Iba Dosimetry GmbH, 2020) has gone furthest, with 0 descendants of its own.
1 other device also cites its predicate K943199.

How does its category compare?

All IYE devices

IYE Accelerator, Linear, Medical: FDA decisions, review times, recalls and adverse event reports over 20 years.

FDA decisions per year · IYE

12in 2025

2007high 28 (2012) · low 9 (2024)2026

2026 to Oct 25, outlined.

Median 510(k) review, days · IYE

170in 2025

2007high 239 (2024) · low 44 (2007)2026

Receipt to decision; years with fewer than 3 clearances left blank.

Recalls per year · IYE

1in 2025

2007high 78 (2007) · low 1 (2024)2026

Class I (0 since 2007) Class II/III not classified

Adverse event reports per year · IYE

101in 2025

2007high 280 (2011) · low 66 (2022)2025

MAUDE reports naming product code IYE, not matched to any one device; reports are not rates.

View these four charts as a table

Year	Decisions	Median 510(k) review, days	Recalls (Class I)	MAUDE reports
2007	23	44	78	155
2008	14	69	49	114
2009	20	63	22	174
2010	23	74	27	246
2011	11	94	73	280
2012	28	106	20	128
2013	18	88	11	96
2014	20	100	14	124
2015	20	108	8	100
2016	21	97	7	97
2017	23	94	7	125
2018	21	58	7	85
2019	19	83	2	91
2020	20	67	4	74
2021	19	86	5	68
2022	12	172	3	66
2023	18	129	7	128
2024	9	239	1	81
2025	12	170	1	101
2026	14	120	4	—

What is it indicated for?

The Clinical Reference Dosimetry Phantom WP ID is used to position various radiation detectors in water or air. It consists of a cubic tank and a precision one-dimensional hand crank or motor driven servo. By design it is suitable to act as a phantom according to various dosimetric protocols (e.g AAPM's TG-51 or IAEA's TRS-398). The device is intended to be used by experienced professionals entrusted with dosimetric functions only.

Indications for use as stated in the FDA summary.

https://510kreport.com/device/K032594 · printed Nov 6, 2026

Cite this page

510(k) Report. “K032594: One Dimensional Water Phantom, WP 1D.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K032594

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Record history

FDA decision record loaded May 2, 2026
Summary read Oct 13, 2026 (extraction version 9eaa42aa01ed)
Lineage and recalls computed Nov 3, 2026
Page last updated Nov 3, 2026