The Fusion™ System and accessories blood pressure measurement system is intended to be used on patients with wrist circumference of 11 cm - 22 cm by trained medical personnel to continually monitor systolic, diastolic and mean blood pressure and pulse rate. The Fusion System module option of Nellcor OxiMAX Option (K012891), is indicated for the continuous non-invasive monitoring of a patient's functional oxygen saturation of arterial hemoglobin (SpO2) by trained medical personnel. The Fusion System module option of Kendall Genius Thermometer (K920713) is indicated for the measuring of a patient's body temperature. This device is prescription use only.
Device Story
Fusion™ System is a non-invasive blood pressure monitor using a pressure sensor placed on the radial artery; eliminates occlusive inflatable cuffs. Device applies a 'sweep technique'—varying force on the radial artery—to generate a pressure waveform. Proprietary algorithms analyze waveforms to extract systolic, diastolic, and mean blood pressure and pulse rate approximately every 15 heartbeats. Operated by trained medical personnel in clinical settings. Output displayed on screen; visual/audible alarms trigger if measurements exceed user-defined limits. Optional modules include Nellcor OxiMAX for SpO2 and Kendall Genius for temperature. Data aids clinicians in therapeutic management by providing frequent, accurate, non-invasive hemodynamic monitoring. Benefits include patient comfort and continuous data availability without cuff-related complications.
Clinical Evidence
Bench testing only. Performance validated against intra-arterial line pressure waveforms. System meets AAMI standards for non-invasive blood pressure monitors, achieving a mean difference of ±5 mmHg or less with a standard deviation of 8 mmHg or less. Pulse measurement accuracy is ±5 bpm or 10%. Testing included 10,000 full-scale cycles, electrical safety, electromagnetic compatibility, and biocompatibility.
Technological Characteristics
Microcomputer-controlled non-invasive blood pressure monitor. Uses a pressure sensor for radial artery applanation tonometry. Features 'sweep' pressure application technique (~10mmHg/heartbeat). Connectivity includes optional pulse oximetry and thermometer modules; thermal printer output. Operating environment: 10°C-40°C, 10-90% humidity. Software-based signal processing and waveform analysis. Powered by AC/DC. Compliant with ANSI/AAMI SP10-2002 and IEC60601.
Indications for Use
Indicated for patients with wrist circumference 11-22 cm requiring continuous monitoring of systolic, diastolic, mean blood pressure, and pulse rate. Optional modules indicated for continuous SpO2 monitoring and body temperature measurement. For use by trained medical personnel; prescription only.
Regulatory Classification
Identification
A noninvasive blood pressure measurement system is a device that provides a signal from which systolic, diastolic, mean, or any combination of the three pressures can be derived through the use of tranducers placed on the surface of the body.
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K061557
# Section 2. SUMMARY AND CERTIFICATION
# A. 510(K) SUMMARY
SEP 1 5 2006
# A.1 Summary of Safety and Effectiveness
In accordance with 21 CFR 807.92, the following information constitutes the Medwave, Inc. summary for the Vasotrac® APM205A System.
| SUBMITTER'S NAME: | Medwave, Inc. |
|---------------------|-------------------------------------------------|
| ADDRESS: | 4382 Round Lake Road West<br>St. Paul, MN 55112 |
| CONTACT PERSON: | Donna R. Lunak |
| TELEPHONE NUMBER: | 651-639-1227 |
| FAX NUMBER: | 651-639-1338 |
| DATE OF SUBMISSION: | 05/22/06 |
### A.2 Identification Of Device
Proprietary Name: Fusion™ Common Name: Patient Monitor Classification Status: Class II Non-invasive blood pressure measurement 870.1130 Module Option Oximeter Tyco Healthcare, Nellcor Oximax 870.2700 (K012891) Module Option Clinical Electronic Thermometer Tyco Healthcare, 880.2910 Kendall Genius Thermometer (K920713)
## A.3 Equivalent Devices
Medwave, Inc. believes the Fusion™ System is substantially equivalent to Medwave, Inc. Vasotrac® APM2052A System (K011152).
#### A.4 Description of the Device
The Fusion™ System is a non-invasive blood pressure monitor that uses a pressure sensor placed directly on top of the radial artery. This sensor is noninvasive and eliminates the need for an occlusive inflatable cuff. This device is intended to be used on patients by trained medical personnel to continually monitor systolic, diastolic and mean blood pressure, and pulse rate.
The Fusion™ System uses a patented "sweep technique" which applies a varying force on the radial artery. The counterpressure in the artery produces a signal which is digitized and used to calculate blood pressure parameters.
page 1 of 6
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## Description of the Device (continued)
The sensor measures the pulse at the point of maximum energy transfer; the wave shapes are analyzed by Medwave's proprietary algorithms. Parameters are
extracted from the waveforms and a set of coefficients are applied to them yielding systolic, mean, and diastolic pressures approximately every 15 heart beats. These algorithms have been tested and validated in clinical studies by synchronized comparisons to arterial line pressure waveforms.
Patient pressures can be monitored visually by viewing the screen and audibly entering limits into the Fusion™ System alarm menu. Patient measurements above or below the limits will be automatically brought to the attention of the caregiver through these visual and audible alarms. A Start/Stop key provides the operator with an option to cancel operation at anytime.
The Fusion™ System can be ordered with additional module options:
- · Tyco Healthcare Nellcor OxiMax Pulse Oximetry System (K012891) provides monitoring of a patient's functional oxygen saturation of arterial hemoglobin.
- · Kendall Genius Thermometer (K920713) provides patient's body temperature readings.
- · Seiko Thermal Printer SII providing hardcopy of readings selected to print.
#### A.5 Intended Use
The Fusion™ System and accessories blood pressure measurement system is intended to be used on patients with wrist circumference of 11 cm - 22 cm by trained medical personnel to continually monitor systolic, diastolic and mean blood pressure and pulse rate.
The Fusion System with the Nellcor OxiMAX Option is indicated for the continuous non-invasive monitoring of a patient's functional oxygen saturation of arterial hemoglobin (SpO2) by trained medical personnel.
The Fusion System will the Kendall Genius Thermometer (K920713) is indicated for the measuring of a patient's body temperature.
This device is prescription use only.
061557 page 2 of 4
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## A.6 Technological Characteristics, Comparison to Predicate Device.
Like the predicate device, the Fusion™ System is a non-invasive blood pressure monitor, which uses a pressure sensor placed on the wrist over the radial artery. This device is intended to be used on patients by trained medical personnel to continually monitor systolic, diastolic and mean blood pressure and pulse rate. The information from this device is intended to guide clinicians in the therapeutic management of their patients by: providing accurate and frequently updated blood pressure information in a safe, noninvasive, easily obtained, and comfortable manner. Both the devices measure the diastolic, systolic blood pressure and pulse rate from the wrist using oscillometric methods. Both the devices are microcomputer controlled.
Like the Vasotrac® System (K011152), the Fusion™ System have a memory function that retains approximately 900 readings.
Like the Vasotrac® System (K011152), the Fusion™ System display systolic, diastolic blood pressures ranging from 40 and 240 mmHg. Both systems have a blood pressure measurement accuracy of a mean difference of ± 5mmHg or less with a standard deviation of 8mmHg or less. The pulse measurement range is the same for both the Vasotrac® System (K011152) and the Fusion™ System, from 40 - 200 bpm. The accuracy of the pulse measurements are + 5 bpm or 10% of the measured pulse frequency.
(Supported by study results in the supporting Clinical Data on file at Medwave, Inc.)
Both Vasotrac® System (K011152) and the Fusion™ utilize the application of pressure to the artery (by the sensor); the counter pressure in the artery produces a pressure waveform. When maximum amplitude is achieved, mean blood pressure is calculated. The Vasotrac® System (K011152) and the Fusion™ System use a unique "sweep" technique for applying pressure to a the radial artery: downward pressure is applied by the sensor to the radial artery at a rate of ~10mmHg per heart beat increasing as the beat amplitude increases and decreasing rapidly when the beat amplitude begins to decrease. A curve fit is made using the amplitude of each beat versus the hold down pressure to form the bell shaped curve. This curve fit is used to determine the true peak that might occur between pulses as well as to filter out small variations due to artifacts or aberrancies.
Both the Vasotrac® System (K01152) and the Fusion™ System utilize Medwave's proprietary algorithms in analyzing the pressure waveforms to calculate the systolic, mean and diastolic readings. Parameters are extracted from the waveforms and a set of coefficients is applied to them, yielding systolic, mean and diastolic pressures. The algorithms have been tested against intra arterial line pressure waveforms and proven to meet industry standards set by the American Medical Instrumentation (AAMI), mean difference of + 5mmHg or less with a standard deviation of 8mmHg or less. (Supported by study results in the Clinical Data on file at Medwave, Inc.)
dl 1557 page 3 of 6
Page 9 of 46 Pages
{3}------------------------------------------------
The Vasotrac® System (K011152) and the Fusion™ System software are identical with the exception of insignificant features incorporated.
The Vasotrac System (K011152), as the Fusion™ System, has a power switch and a LCD display. The operating environment of 100C - 40°C and 10% to 90% relative humidity.
The Fusion™ and the predicate device - the Vasotrac® APM205A Noninvasive Blood Pressure Measurement System (K011152) use the same non-invasive blood pressure measurement accessories.
Any minor differences in the appearance, technology, or manufacture of the predicate device and the Fusion™ System do not raise any new questions of safety or effectiveness. Associated risks posed by the Fusion™ System are thought to be no more than those of well-designed automated cuff-based noninvasive blood pressure devices currently marketed in the interstate commerce are. Both the device and the sensor have been designed to minimize the risk to patients from burns, excessive pressure or sensor failure caused by either normal device use by patient and/or clinical abuse.
# K061557
{4}------------------------------------------------
# A.7 Discussion of Performance Testing
.
An extensive collection of tests has been conducted and successfully completed. Summary follows:
| Requirements | ANSI/AAMI SP10-2002 American<br>National Standards for Electronic or<br>Automated Sphygmomanometers | IEC60601 | Center For Devices And<br>Radiological Health<br>Noninvasive Blood<br>Pressure Monitor Guidance<br>Document | Other As<br>Listed |
|---------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------|------------|-------------------------------------------------------------------------------------------------------------|---------------------|
| Device Labeling | X | X | X | ---------- |
| Outer Container Labeling | X | X | X | ---------- |
| Information Manual | X | X | X | ---------- |
| Component Labeling | X | X | X | ---------- |
| Power System Labeling | X | ---------- | X | ---------- |
| Storage Conditions -<br>20°C (-40°F) - 50°C<br>(122°F) | X | ---------- | ---------- | ---------- |
| Operating Temperature<br>Conditions 10°C (50°F) -<br>40°C (104°F) | X | ---------- | ---------- | ---------- |
| Operating Humidity<br>Conditions 15 - 90 percent<br>(noncondensing) | X | ---------- | ---------- | ---------- |
| Operating Range in<br>Altitude Conditions -170<br>to 1700 meters<br>(-500 to 5000 feet),<br>referenced to sea level | X | ---------- | ---------- | ---------- |
| Vibration and Shock | ---------- | ---------- | ---------- | NSTA |
| Voltage Range | N/A | N/A | N/A | N/A |
| Life test minimum of<br>10,000 full scale cycles | X | ---------- | ---------- | ---------- |
| Maximum cuff pressure | N/A | N/A | N/A | N/A |
| Cuff deflation | N/A | N/A | N/A | N/A |
| Electrical safety | ---------- | X | ---------- | IEC601 |
| Conductive components | ---------- | X | ---------- | ---------- |
| Pressure indicator accuracy | X | ---------- | ---------- | ---------- |
| Overall system efficacy | X | ---------- | ---------- | ---------- |
| Auscultatory method as the<br>reference standard | N/A | N/A | N/A | N/A |
| Intraarterial method as the<br>reference standard | X | ---------- | ---------- | ---------- |
| Requirements | ANSI/AAMI SP10-2002 American<br>National Standards for Electronic or<br>Automated Sphygmomanometers | IEC60601 | Center For Devices And<br>Radiological Health<br>Noninvasive Blood<br>Pressure Monitor Guidance<br>Document | Other As<br>Listed |
| Battery indicator | N/A | ---------- | ---------- | ---------- |
| Requirements for devices<br>with manual inflation | N/A | N/A | N/A | N/A |
| Comparison Testing | N/A | N/A | N/A | N/A |
| Foreign Standards | N/A | N/A | N/A | N/A |
| Software Testing | ---------- | ---------- | ---------- | Medwave<br>795-0000 |
| Electromagnetic<br>Compatibility | ---------- | X | ---------- | ---------- |
| Biocompatibility | ---------- | ---------- | X | ---------- |
| Sterilization | N/A | N/A | N/A | N/A |
| Packaging | N/A | N/A | N/A | N/A |
| Shelf Life | N/A | N/A | N/A | N/A |
061557 page 5.
{5}------------------------------------------------
### A.8 Conclusion
Based on extensive performance testing and a comparison to the predicate device, it is the conclusion of Medwave, Inc. that Fusion™ is substantially equivalent to devices already on the market (cleared by the 510(k) process) and presents no new concerns about safety and effectiveness.
page 6 of 6
K041557
{6}------------------------------------------------
#### Public Health Service
ood and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
SEP 1 5 2006
Medwave, Inc. c/o Ms. Donna R. Lunak VP of Regulatory Affairs 4382 Round Lake Road West Arden Hills, MN 55112
Re: K061557
Trade Name: Fusion™ System Regulation Number: 21 CFR 870.1130 Regulation Name: Non-invasive Blood Pressure Measurement System Regulatory Class: Class II (two) Product Code: DXN Dated: August 14, 2006 Received: August 23, 2006
## Dear Ms. Lunak:
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.
{7}------------------------------------------------
Page 2 -- Ms. Donna R. Lunak
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 (QS) 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,
Bzimmernan for
Bram D. Zuckerman, M.D. Director Division of Cardiovascular Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
{8}------------------------------------------------
# INDICATIONS FOR USE
510(k) Number (if known):
Device Name: Fusion™ System
Indications for Use:
The Fusion™ System and accessories blood pressure measurement system is intended to be used on patients with wrist circumference of 11 cm - 22 cm by trained medical personnel to continually monitor systolic, diastolic and mean blood pressure and pulse rate.
The Fusion System module option of Nellcor OxiMAX Option (K012891), is indicated for the continuous non-invasive monitoring of a patient's functional oxygen saturation of arterial hemoglobin (SpO2) by trained medical personnel.
The Fusion System module option of Kendall Genius Thermometer (K920713) is indicated for the measuring of a patient's body temperature.
This device is prescription use only.
Prescription Use _____________________________________________________________________________________________________________________________________________________________ (Part 21 CFR 801 Subpart D)
Over-The-Counter Use _ (21 CFR 801 Subpart C)
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
Bhummana
Division of Cardlovascular Devices 510(k) Number
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Learn the FDA Browser
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.