510(k) · Cleared

Cleared

Kinematic Knee Device/Magnetom Open System

K961121510(k) TraditionalCleared Jun 19, 199690-day reviewClass II21 CFR 892.1000

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

Siemens Medical Solutions USA, Inc. · LNH System, Nuclear Magnetic Resonance Imaging

Cleared on Jun 19, 1996 as substantially equivalent to K924154 (Resonex, Inc., 1992) after a 90-day review. Its family tree reaches back 1 generation to 1992. 1 later device descends from it.

Decided: Jun 19, 1996
Review: 90 days
Class: Class II
Product code: LNH
Recalls: None
Predicates: 1

Its longest line of descent runs back 1 generation to K924154 (1992). 1 later device descends from it, 1 citing it directly.

By dateBy generation

Root · 1 generation backK924154 Kinematic Mri MoviemakerResonex, Inc. · 1992
This deviceK961121 Kinematic Knee Device/Magnetom Open SystemSiemens Medical Solutions USA, Inc. · 1996
Descendant · cites it directly · 0 of its ownK964752 Kinematic Positioning Devices; C-Spine, Knee,ShoulderPhilips Medical Systems (Cleveland), Inc. · 1997

Most influential descendants

Showing 1 of 1 · See all

K964752Kinematic Positioning Devices; C-Spine, Knee,ShoulderPhilips Medical Systems (Cleveland), Inc. · 1997 · cites it directly0descendants

View FIG. 1 as a table

Line of descent and top descendants

Generation	Number	Device	Applicant	Decided	Recalls
−1	K924154	Kinematic Mri Moviemaker	Resonex, Inc.	1992	—
0 (this device)	K961121	Kinematic Knee Device/Magnetom Open System	Siemens Medical Solutions USA, Inc.	1996	—
+1	K964752	Kinematic Positioning Devices; C-Spine, Knee,Shoulder	Philips Medical Systems (Cleveland), Inc.	1997	—

Descendants by year cleared

Year cleared	Devices	With a Class I recall
1997	1	0

FIG. 1 — Lineage of K961121, 1992–1997Source: 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 LNH? 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 LNH device

#1 K213693 MAGNETOM Vida with syngo MR XA50Ascore 23.0 · 18 generations · no Class I recall
#2 Held for the reportin the report
#3 Held for the reportin the report

Get a 510(k) Report

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
*	K924154	Kinematic Mri Moviemaker Summary page 3 …Siemens Kinematic Knee Device is substantially equivalent to the commercially available Resonex Kinematic MRI package. The Resonex Kinematic MRI Package was described in K924154 which received FDA premarket clearance on 11/23/92. Signature ate MAGNETOM Open 03/20/96 510(k) Summary: Page 2 Kinamaticr Wn…	Resonex, Inc.	1992	—

Also cleared against K924154: 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
K964752	Kinematic Positioning Devices; C-Spine, Knee,Shoulder	Philips Medical Systems (Cleveland), Inc.	1997	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, K964752 (Philips Medical Systems (Cleveland), Inc., 1997) has gone furthest, with 0 descendants of its own.
1 other device also cites its predicate K924154.

How does its category compare?

All LNH devices

LNH System, Nuclear Magnetic Resonance Imaging: FDA decisions, review times, recalls and adverse event reports over 20 years.

FDA decisions per year · LNH

26in 2025

2007high 32 (2020) · low 12 (2007)2026

2026 to Oct 25, outlined.

Median 510(k) review, days · LNH

122in 2025

2007high 140 (2015) · low 35 (2007)2026

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

Recalls per year · LNH

8in 2025

2007high 71 (2018) · low 0 (2017)2026

Class I (8 since 2007) Class II/III not classified

Adverse event reports per year · LNH

1,263in 2025

2007high 1,263 (2025) · low 84 (2021)2025

MAUDE reports naming product code LNH, 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	12	35	25	114
2008	19	53	12	167
2009	17	70	7	194
2010	12	94	17	165
2011	16	81	11	182
2012	22	89	5	170
2013	19	108	2	107
2014	17	108	13	119
2015	19	140	12 (2)	113
2016	20	108	1	135
2017	18	98	0	121
2018	29	128	71	158
2019	26	62	5	158
2020	32	121	4	98
2021	27	87	41	84
2022	30	74	13	138
2023	30	124	10 (1)	159
2024	26	104	4	281
2025	26	122	8 (5)	1,263
2026	24	126	43	—

What is it indicated for?

The new kinematic knee device will enable the physician to evaluate the anatomy of the knee and dynamic interaction of the different tissues (ligaments, cartilage, bone, muscle, fat). Such dynamic evaluation may be useful for patellar tracking.

Indications for use read by OCR from a scanned FDA summary, so letters may be misread. Check the PDF before quoting it.

https://510kreport.com/device/K961121 · printed Nov 6, 2026

Cite this page

510(k) Report. “K961121: Kinematic Knee Device/Magnetom Open System.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K961121

Report an extraction error

Are you the manufacturer?

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