K071631 · Cheetah Medical, Inc. · DXG · Jan 18, 2008 · Cardiovascular
Device Facts
Record ID
K071631
Device Name
NICOM ELECTRODES
Applicant
Cheetah Medical, Inc.
Product Code
DXG · Cardiovascular
Decision Date
Jan 18, 2008
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 870.1435
Device Class
Class 2
Indications for Use
The Cheetah NICOM system is a portable, non-invasive Cardiac Output monitoring device based on bio-impedance Cardiography. The Cheetah NICOM system is intended to monitor and display a patient's Cardiac Output in units of Ltr/Min, and was cleared under K042144. NICOM Electrodes are disposable electrodes used in conjunction with the NICOM signal processing product line.
Device Story
Cheetah NICOM is a portable, non-invasive cardiac output monitoring system. It utilizes electrical bio-impedance measurement; a high-frequency sine wave is injected into the thorax via disposable dual-electrode stickers; voltage is measured at adjacent electrodes. The system calculates impedance to current flow and constructs an electrical bio-reactance waveform to determine cardiac output. Used in clinical settings by healthcare providers to monitor hemodynamic status. Output is displayed in L/min, assisting clinicians in hemodynamic decision-making and patient management.
Clinical Evidence
Clinical testing included: 1) 119 post-cardiac surgery patients requiring PAC; 2) 36 patients undergoing stress testing; 3) Comparative study of 10 subjects using NICOM electrodes vs. 3M Red Dot electrodes. No adverse events reported. Results confirmed substantial equivalence of NICOM electrodes to 3M Red Dot electrodes.
Technological Characteristics
Portable non-invasive cardiac output monitor. Uses electrical bio-impedance/bio-reactance. Employs disposable dual-electrode stickers. Bench testing per ANSI/AAMI EC12:2000/(R)2005. Biocompatibility per ISO-10993. Signal processing product line.
Indications for Use
Indicated for monitoring and displaying cardiac output (L/min) in patients via non-invasive bio-impedance cardiography. Prescription use only.
Regulatory Classification
Identification
A single-function, preprogrammed diagnostic computer is a hard-wired computer that calculates a specific physiological or blood-flow parameter based on information obtained from one or more electrodes, transducers, or measuring devices.
{0}------------------------------------------------
K071631/52
p1/3
Image /page/0/Picture/1 description: The image shows the logo for Cheetah Medical. The logo features a stylized drawing of a cheetah leaping forward. Below the cheetah drawing, the words "Cheetah Medical" are printed in a simple, sans-serif font.
10291 N M Suito 10 Indianapolis, IN . I ISA
Image /page/0/Picture/3 description: The image is a gradient that transitions from white to black. The left side of the image is predominantly white, with a gradual increase in black speckles and shading as it moves towards the right. The right side of the image is almost entirely black, with only a few scattered white pixels. The transition between the two colors is smooth and gradual.
# SECTION 5: 510(k) Summary
#### Submitter
Cheetah Medical, Inc. 2138 East 62nd Street, Suite 132 Indianapolis, IN 46250 USA Toll Free: (+1) 866 751 9097 Fax: (+1) 916 367 6717
#### Contact Person
Rhona Shanker Z & B Enterprises, Inc. 12154 Darnestown Road, #236 Gaithersburg, MD 20878 Ph: 301-251-9570 Fax: 301-251-9571 rhonashanker@comcast.net
#### Date Prepared
January 10, 2008
#### Device Information
Trade name: Cheetah NICOM System
#### Common name: Cheetah NICOM
Classification Name: Pre-Programmable Diagnostic Computer (21 CFR 870.1435, Product Code: DXG; 21 CFR 870.2360 Product Code DRX)
> Tel. (+1) 317-660-6649 ● Fax.(+1) 317-660-6650 新闻 发布时间: 上一篇:
JAN 18 2008
{1}------------------------------------------------
K071631/52
p2/3
Image /page/1/Picture/1 description: The image shows the logo for Cheetah Medical. The logo includes a stylized image of a cheetah leaping forward. The text "Cheetah Medical" is written in a simple, sans-serif font below the cheetah image.
Indianapolis, IN 46290
Image /page/1/Picture/3 description: The image is mostly black with some white noise on the left side. The white noise appears to be concentrated on the left side of the image, gradually fading into the black background. The black background is uniform and covers most of the image. The image has a grainy texture.
### Devices to which substantial equivalence is claimed:
The Cheetah NICOM system was found substantially equivalent to the VLIGILANCE CCO/CEDV 7 VIGILANCE CCO/SVO2/CEDV Monitor (K000664) under K042144.
The NICOM Electrodes are substantially equivalent to the electrodes cleared for marketing with the original NICOM Monitoring System (K042144), when used with the NICOM system. The electrodes cleared in the original submission were the Red Dot™ electrodes by 3M Health Care.
#### Device Description:
The Cheetah NICOM is a portable, non-invasive, Cardiac Output detector system. The NICOM system measures the Cardiac Output by employing the electrical bio-impedance measurement technique. Electrical bio-impedance is the characteristic impedance of a volume of tissue and fluid. In the case of Cardiac Output measurements, the relevant tissue includes the heart and the immediate surrounding volume of the thorax. The relevant fluid is blood.
Cheetah Medical's NICOM electrode is a double electrode sticker. Within each sticker, one electrode is used to inject a high frequency sine wave into the body, while the resulting voltage is measured at the adjacent electrode. An array of such electrodes is placed at specific areas of the thorax, the impedance to the current flow calculated, and the electrical bio-reactance waveform constructed.
#### Indications for Use:
The Cheetah NICOM system is a portable, non-invasive Cardiac Output monitoring device based on bio-impedance Cardiography. The Cheetah NICOM system is intended to monitor and display a patient's Cardiac Output in units of Ltr/Min, and was cleared under K042144.
NICOM Electrodes are disposable electrodes used in conjuction with he NICOM signal processing product line.
#### Brief Description of Non-Clinical Testing
- 1. Electrodes were tested per ANSI/AAMI EC12:2000/(R)2005; Disposable ECG electrodes, 3ed.
- 2. Biocompatibility was confirmed per ISO-10993 standard; Biological Evaluation of Medical Devices.
Tel. (+1) 317-660-6649 · Fax.(+1) 317-660-6650 · www.cheetah.medical.com
{2}------------------------------------------------
Image /page/2/Picture/0 description: The image shows handwritten text that appears to be a combination of alphanumeric characters. The first line reads 'K071631/S2', with a mix of letters and numbers separated by a forward slash. Below this, the text 'P3/3' is written, possibly indicating a page number or a similar identifier. The handwriting is clear and legible, with a simple, unadorned style.
Image /page/2/Picture/1 description: The image shows the logo for Cheetah Medical. The logo includes a stylized image of a cheetah leaping forward. The text "Cheetah Medical" is written in a simple, sans-serif font below the cheetah image.
10291 N Meric Suite 100 Indianapolis, IN 46290 USA
Image /page/2/Picture/3 description: The image is a black and white gradient. The left side of the image is white, and the right side is black. The gradient is smooth, and there are no sharp edges. The image is simple and abstract.
### Brief Description of Clinical Testing
NICOM Electrodes were tested on:
- 1. 119 consecutive patients requiring PAC in the immediate postoperative period following cardiac surgery - No adverse events were reported.
- 2. 36 patients undergoing cardiac output evaluation during stress testing in Lonestar Heart Center, Amarillo, Texas, US. No adverse events were reported.
- 3. Cardiac output was measured in 10 subjects with the NICOM System using the NICOM electrodes and using the 3M Health Care Red Dot electrodes. The results demonstrate that the NICOM electrodes are substantially equivalent to the 3M Health Care Red Dot electrodes when used with the NICOM System.
#### Conclusion
The NICOM Electrode is a dual electrode sticker, used in conjunction with its NICOM system to monitor cardiac output by measuring electrical impedance changes in the thorax region. The Cheetah NICOM system is intended for prescription use only.
NICOM electrodes were extensively tested (bench, animal, clinical) and proved to be safe and effective.
The data demonstrate that the NICOM electrodes are substantially equivalent to the 3M Red Dot Electrodes that were cleared with the original NICOM System (K042144) when used with the NICOM system.
Tel. (+1) 317-660-6649 · Fax.(+1) 317-660-6650 · www.cheetah-medical.con
· Dr. Dr. 257 255 255 255 255 255 2
{3}------------------------------------------------
Public Health Service
Image /page/3/Picture/2 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of a stylized depiction of an eagle or bird with three wing-like strokes, symbolizing health and human services. The text "DEPARTMENT OF HEALTH & HUMAN SERVICES • USA" is arranged in a circular fashion around the bird symbol.
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
JAN 18 2008
Cheetah Medical c/o Ms. Rhona Shanker Z & B Enterprises, Inc. 12154 Darnestown Road # 236 Gaithersburg, MD 20878
Re: K071631
Cheetah NICOM System Regulation Number: 21 CFR 870.1435 Regulation Name: Single-function preprogrammed diagnostic computer Regulatory Class: Class II (two) Product Code: DXG Dated: June 14, 2007 Received: June 14, 2007
Dear Ms. Shanker:
We have reviewed your Section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (Act) that do not require approval of a premarket approval application (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to such additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.
{4}------------------------------------------------
Page 2 - Ms. Rhona Shanker
Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies. You must comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); good manufacturing practice requirements as set forth in the quality systems (OS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050. This letter will allow you to begin marketing your device as described in your Section 510(k) premarket notification. The FDA finding of substantial equivalence of your device to a legally marketed predicate device results in a classification for your device and thus, permits your device to proceed to the market.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please contact the Office of Compliance at (240) 276-0120. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR Part 807.97). You may obtain other general information on your responsibilities under the Act from the Division of Small Manufacturers, International and Consumer Assistance at its toll-free number (800) 638-2041 or (240) 276-3150 or at its Internet address http://www.fda.gov/cdrh/industry/support/index.html.
Sincerely yours.
Dma R. Vochner
A Bram D. Zuckerman, M.D. Director Division of Cardiovascular Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
{5}------------------------------------------------
K071631/52
pi of l
Image /page/5/Picture/1 description: The image shows the logo for Cheetah Medical. The logo features a stylized image of a cheetah leaping, with the text "Cheetah Medical" printed below the image. A trademark symbol is located to the right of the cheetah image.
10291 N. Meri Suite 100 Indianapolis, IN 46 USA
Image /page/5/Picture/3 description: The image appears to be a gradient that transitions from white to black. The left side of the image is predominantly white, with a high density of white pixels. As one moves towards the right, the white gradually fades into shades of gray, eventually becoming completely black on the right side. The transition is smooth, creating a visual effect of fading or blending.
# SECTION 4: Indications for Use
510(k) Number: K6716 3)
Device Name: Cheetah NICOM System
Indications for Use:
The Cheetah NICOM system is a portable, non-invasive Cardiac Output monitoring device based on bio-impedance Cardiography. The Cheetah NICOM system is intended to monitor and display a patient's Cardiac Output in units of Ltr/Min, and was cleared under K042144.
NICOM Electrodes are disposable electrodes used in conjunction with the NICOM signal processing product line.
> AND/OR Over-The-Counter Use Prescription Use (21 CFR 801 Subpart C) (Part 21 CFR 801 Subpart D)
## (PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
sumar R. de Amez
ardiovascular Devices
10(k) Number. Tel. {+1) 317-660-6649 @ Fax.(+1) 317-660-6650 . www.cheetah-medical.com A STAND STATE A
Two short videos show you everything — or skip straight to the written tutorial if you'd rather read. You can reopen this any time from the Tutorial button in the top bar.
Part 1 — Search, results, and everyday workflows 16 min
Part 2 — Embeddings: the galaxy map 3 min
1. Search: exact and fuzzy
Type a phrase like "coronary artery calcification" into the search box. You get two kinds of results. Exact results match the literal phrase — prefix searches work ("coronary artery calcificati") but suffix searches do not. Fuzzy results match on the meaning and intent of your phrase rather than the exact words, and are sorted by relevance score. Hover over the Exact or Fuzzy badge on any row to see exactly why it matched.
Use the checkboxes above the results to narrow: SaMD keeps only software-only devices, AI / ML keeps only devices with AI.
Exact vs. fuzzy search: what's the difference?
Exact matches on the literal phrase (prefix search works, suffix does not). Fuzzy matches on the meaning and intent of the phrase rather than the exact words. Hover over the badge on any row to see why it matched.
You search "coronary artery calcification" and want only software devices with AI. What two filters do you apply?
Narrow by SaMD (software-only devices), then narrow by AI/ML (devices with AI).
2. The results table
Scroll right in the results table. The intended use is extracted for you — no need to open the PDF. The device story gives a high-level snapshot of what the device does and how it's used. The AI Performance sub-table shows each output name, acceptance criteria, observed values, and development/test dataset descriptions — the same format Innolitics uses for regulatory strategy outputs, and the fastest high-level fingerprint of an AI device. It is AI-generated but has been very reliable in practice.
Where do you find a device's intended use without opening the PDF?
Scroll right in the search results table. The intended use column is extracted for you; no need to dig into the 510(k) summary PDF.
What does the AI Performance sub-table show, and why is it useful?
Output name, acceptance criteria, observed values, development dataset description, and test dataset description. It's the same format we use for regulatory strategy output and Fast 510(k) input, and the fastest high-level fingerprint of an AI device. AI-generated but reliable in practice.
3. Judging fuzzy relevance
Fuzzy results trail off in relevance as you scroll. Use three signals to decide how far down to go: the fuzzy badge explanations, the intended use column, and whether your target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, you're past the relevant zone. A top hit with a low score (~0.4) and a stretched explanation is a hint the closest predicates are far away — the project may be headed for De Novo. Note the fuzzy search is a pattern match: it doesn't handle negation ("not") well, and hardware devices can appear — filter by SaMD/AI ML to cut them.
How do you judge how far down fuzzy search results to go?
Use the relevancy signals: the fuzzy badge explanations, the intended use column, and whether the target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, results are trailing off in relevancy.
4. Device detail page: chat and citations
Click a device name to open its detail page: device facts on the left, a chat window on the right. Ask something like "Describe the training data". The answer carries little citation bubbles — click one to jump to the highlighted passage in the source PDF, so you can verify every AI answer against the document. There's also a Download PDF button for sharing.
How do you verify an AI chat answer on the device detail page?
Click the citation bubbles to jump to the relevant highlight in the source document.
Reading rule for every project: how many summaries do you read in full?
At least the three most relevant 510(k) or De Novo summaries, in full. After that, use targeted chat questions to confirm your memory quickly. The tool supports this professional habit — it doesn't replace it.
5. Side-by-side comparison
Select multiple rows in the results table (aim for under ~10), then open the PDF Viewer tab. Ask one question — it goes to all selected devices in parallel, each with citations. This is the fastest way to compare and contrast devices: training data, PCCP scope, how they handled adding new scanners, and so on.
What does the side-by-side PDF viewer mode do?
Select multiple devices, open the PDF viewer tab, and ask one question (e.g., "Describe the training data"). It queries all selected devices simultaneously with citations, so you can compare and contrast quickly.
6. Collections
With rows selected, go to the Collections tab and create a labeled collection (e.g., "Cobb Angle Project"). Reload that selection any time — before a client call, pull up the collection and ask questions across all of its devices at once.
How do you save a set of selected devices for later use?
Select the rows, go to the Collections tab, and create a labeled collection (e.g., "Cobb Angle Project"). You can reload the selection anytime and carry it into the PDF viewer and other tabs that support selections.
7. Product codes and the regulations tree
Click a product code in the results to jump to it in the regulations tree — identification text, sibling product codes, and devices you can open in a PDF viewer on the right. Click a regulation number to see its identification, special controls, and related product codes. You can also search by product code or regulation number at the top of the tree. Always read the special controls if any exist for your device — it broadens your search and sharpens pre-kickoff research.
What can you do from the regulations tree view?
Browse product codes and regulation numbers, read the identification text and special controls, browse sibling product codes, open device PDFs on the right, and search by product code or regulation number at the top of the tree.
8. Chart view
Click Show Chart and segment by regulation number (or product code) to see which regulations dominate your result set. Clicking a regulation takes you into the regulations tree. Great for spotting that most matches are, say, hardware laparoscopic devices — a cue to go back and filter.
How do you see which regulations dominate a search result set?
Click "Show Chart" and segment by Regulation Number. Clicking a regulation takes you to the regulations tree.
9. The predicate graph
Open the Predicates tab for a family-tree view of predicate relationships. Click a node to trace its parents and children; selections from search carry over pre-selected. Commonly predicated devices are worth reading — a lot of people predicated them for a reason. The visual lineage is also handy on client calls, e.g. to show how a predicate family evolved and justify why your predicate still holds.
In the predicate graph, why are commonly predicated devices worth reading?
A lot of people predicated them for a reason. Clicking a node traces parents and children, and selections from search carry over pre-selected.
10. Embeddings: the galaxy map
The Embeddings tab plots every matching document in a 2-D "galaxy map" where semantically similar devices cluster together. Hover or click clusters to explore, and let AI label the clusters for you. Embeddings beat product codes for grouping: two devices can carry different product codes (LLZ vs. QIH) yet do the same thing — the embedding captures the meaning of the intended use and device story. This is also exactly how retrieval-augmented generation (RAG) works under the hood, and it makes a great visual on client calls.
Try it yourself
Head to the search page and work through a few of these AI/ML fuzzy searches to build intuition: perivascular fat on CT · aortic valve calcification opportunistic screening on noncontrast CT · breast cancer prediction on digital pathology slides · autism detection · gestational age prediction · a hearing aid that can also detect a pulse · foundation model based analysis of ECG · large language models · penetration test. Watch how the relevance scores, intended use, and AI Performance tables tell you when results stop being meaningful.