Hewlett-Packard Model M1791A Acute Cardiac Ischemia-Time Insensitive Predicitive Instrument (Aci-Tipt)

K951978510(k) TraditionalCleared Jan 4, 1996252-day review

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

Hewlett-Packard Co. · LOS (no longer in FDA’s product-code list)

Cleared on Jan 4, 1996 after a 252-day review. FDA has not posted a summary or statement for it, so its predicates are not known. 2 later devices descend from it.

Decided: Jan 4, 1996
Review: 252 days
Product code: LOS
Recalls: None
Predicates: 0

2 later devices descend from it, 1 citing it directly.

This deviceK951978 Hewlett-Packard Model M1791A Acute Cardiac Ischemia-Time Insensitive…Hewlett-Packard Co. · 1996
Descendant · cites it directly · 1 of its ownK981265 Pagewriter 200I Interpretive Cardiograph Model M1770A with Acute…Hewlett-Packard Co. · 1998
Descendant · 2 generations on · 0 of its ownK982025 Hewlett-Packard M2475B with 12-Lead Option (#C90) Codemaster 100…Hewlett-Packard Co. · 1998

Most influential descendants

Showing 2 of 2 · See all

K981265Pagewriter 200I Interpretive Cardiograph Model M1770A with Acute Cardiac Ischemia Time…Hewlett-Packard Co. · 1998 · cites it directly1descendant
K982025Hewlett-Packard M2475B with 12-Lead Option (#C90) Codemaster 100 Conitor/DefibrillatorHewlett-Packard Co. · 1998 · 2 generations on0descendants

View FIG. 1 as a table

Line of descent and top descendants

Generation	Number	Device	Applicant	Decided	Recalls
0 (this device)	K951978	Hewlett-Packard Model M1791A Acute Cardiac Ischemia-Time Insensitive…	Hewlett-Packard Co.	1996	—
+1	K981265	Pagewriter 200I Interpretive Cardiograph Model M1770A with Acute Cardiac…	Hewlett-Packard Co.	1998	—
+2	K982025	Hewlett-Packard M2475B with 12-Lead Option (#C90) Codemaster 100…	Hewlett-Packard Co.	1998	—

Descendants by year cleared

Year cleared	Devices	With a Class I recall
1998	2	0

FIG. 1 — Lineage of K951978, 1996–1998Source: FDA 510(k) summaries, read by 510(k) Report · How lineage is built

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

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

Candidate predicates for a device like this, rankedin the report
Recall history across each candidate’s familyin the report

Get a 510(k) Report

What was it cleared against?

FDA has not posted a summary or statement for it, so its predicates are not known.

What descends from it? (2)

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

Number	Device	Applicant	Decided	Descendants
K981265	Pagewriter 200I Interpretive Cardiograph Model M1770A with Acute Cardiac Ischemia Time…	Hewlett-Packard Co.	1998	1

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?

Of its descendants, K981265 (Hewlett-Packard Co., 1998) has gone furthest, with 1 descendant of its own.

https://510kreport.com/device/K951978 · printed Nov 4, 2026

Cite this page

510(k) Report. “K951978: Hewlett-Packard Model M1791A Acute Cardiac Ischemia-Time Insensitive Predicitive Instrument (Aci-Tipt).” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 4, 2026. https://510kreport.com/device/K951978

Report an extraction error

Are you the manufacturer?

Record history

FDA decision record loaded May 2, 2026
Lineage and recalls computed Nov 3, 2026
Page last updated Nov 3, 2026