510(k) Report

510(k) · Cleared

Cleared

CTD Mark I Traction Device

K991931510(k) TraditionalCleared Aug 12, 199965-day reviewClass II21 CFR 890.5900

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

Therasys, Inc. · ITH Equipment, Traction, Powered

Cleared on Aug 12, 1999 after a 65-day review. FDA’s file for it is a 510(k) statement, which names no predicate.

Decided
Aug 12, 1999
Review
65 days
Class
Class II
Product code
ITH
Recalls
None
Predicates
0

FDA’s file for it is a 510(k) statement, which names no predicate.

FIG. 1 — Lineage of K991931Source: FDA 510(k) database · How lineage is built

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Notable FDA decisions, review times and new Class I recalls. See an issue.

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

Planning a device in ITH? 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 ITH device

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  2. #2 Held for the reportin the report
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What was it cleared against?

FDA’s file for it is a 510(k) statement, which names no predicate.

What descends from it?

No later submission names this one as a predicate yet.

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.

How does its category compare?

All ITH devices

ITH Equipment, Traction, Powered: FDA decisions, review times, recalls and adverse event reports over 20 years.

FDA decisions per year · ITH

2in 2025

2007: 22008: 42009: 12010: 12011: 12012: 12014: 22015: 22023: 12024: 12025: 2
2007high 4 (2008) · low 0 (2013)2026

2026 to Oct 25, outlined.

Median 510(k) review, days · ITH

132in 2008

2008: 132 days median
2007high 132 (2008)2026

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

Recalls per year · ITH

2in 2011

2011: 2
2007high 2 (2011) · low 0 (2007)2026

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

Adverse event reports per year · ITH

3in 2025

2007: 22009: 32010: 32011: 52012: 12013: 22014: 52015: 12016: 22017: 22019: 52021: 12023: 12024: 52025: 3
2007high 5 (2011) · low 0 (2008)2025

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

View these four charts as a table
YearDecisionsMedian 510(k) review, daysRecalls (Class I)MAUDE reports
20072—02
2008413200
20091—03
20101—03
20111—25
20121—01
20130—02
20142—05
20152—01
20160—02
20170—02
20180—00
20190—05
20200—00
20210—01
20220—00
20231—01
20241—05
20252—03
20260—0—

What is it indicated for?

The CTD Mark I is a mobile, cervical, pneumatic pulling-traction device expressly used to perform traction and mobilization of the cervical muscles and vertebrae. It provides intermittent or continuous traction modes. The CTD Mark I when used as a cervical traction device is for clinical use only by prescription of a licensed physician.

Indications for use read by OCR from a scanned FDA 510(k) statement, so letters may be misread. Check the PDF before quoting it.

Cite this page

510(k) Report. “K991931: CTD Mark I Traction Device.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K991931

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Record history
  • FDA decision record loaded May 2, 2026
  • Summary read Oct 13, 2026 (extraction version 9eaa42aa01ed)
  • Page last updated Nov 3, 2026