The Microheater intended use is for warming blood, blood products and intravenous solution prior to administration. It is intended to be used by healthcare professionals in clinical environments to prevent hypothermia. The system is not meant for the infusion of drugs, or platelet or granulocyte suspensions.
Device Story
Portable in-line blood/fluid warmer; consists of heater unit, power module, and single-use disposable heat exchanger set. Input: IV fluids/blood via gravity-fed line. Operation: Resistive heating of two plates within heater unit; electronic control of temperature and alarms. Output: Warmed fluid; alphanumeric display of temperature, alarm messages, and status. Used in clinical environments by healthcare professionals. Monitors for lack of flow, empty cartridge, overheating, and electrical faults; stops heating and triggers alarms upon fault detection. Benefits patient by preventing hypothermia during fluid administration.
Clinical Evidence
Bench testing only. Testing verified the system's ability to warm cold fluids to physiological temperatures and the efficacy of alarm systems for unsafe or ineffective operating conditions. Compliance with safety standards (UL 2601-1, EN 60601-1, CAN/CSA C22.2 No. 601-1-M90) and sterilization validation (ANSI/AAMI/ISO 11135-1994) was confirmed.
Technological Characteristics
Resistive heating technology using two plates. Power: 15V pulsed DC via 120/230 VAC converter. Disposable set: molded frame with bonded plastic film and microporous membrane. Connectivity: Standalone. Sterilization: Ethylene Oxide (SAL 10^-6). Standards: ANSI/AAMI/ISO 10993-1 (biocompatibility), UL 2601-1, EN 60601-1, EN 60601-1-2 (EMC).
Indications for Use
Indicated for warming blood, blood products, and IV solutions in clinical environments to prevent hypothermia. Not for infusion of drugs, platelets, or granulocyte suspensions. Intended for flow rates of 6 L/hour (100 ml/min) or less.
Regulatory Classification
Identification
A nonelectromagnetic blood and plasma warming device is a device that warms blood or plasma, by means other than electromagnetic radiation, prior to administration. An electromagnetic blood and plasma warming device is a device that employs electromagnetic radiation (radiowaves or microwaves) to warm a bag or bottle of blood or plasma prior to administration.
Predicate Devices
Estill Medical Technologies, Inc. Thermal Angel™ Blood/Fluid Warmer (K992066)
Submission Summary (Full Text)
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Image /page/0/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of a circular seal with the text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" arranged around the perimeter. Inside the circle is a stylized emblem featuring three abstract shapes resembling birds in flight, stacked vertically.
Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
Mr. Uraiwan P. Labadini QA & RA Manager Belmont Instrument Corporation 780 Boston Road Billerica, Massachusetts 01821
JAN 1 0 2017
Re: K031478
Trade/Device Name: Microheater Regulation Number: 21 CFR 880.5725 Regulation Name: Infusion Pump Regulatory Class: Class II Product Code: BSB, LGZ Dated: May 9, 2003 Received: May 12, 2003
Dear Mr. Labadini:
This letter corrects our substantially equivalent letter of July 2, 2003.
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. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you, however, that device labeling must be truthful and not misleading.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to 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.
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 Parts 801 and 809 ); medical device reporting of
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Page 2 - Ms. Uraiwan P. Labadini
medical device-related adverse events) (21 CFR 803); 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.
If you desire specific advice for your device on our labeling regulation (21 CFR Parts 801 and 8091 ), please contact the Division of Industry and Consumer Education at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm. Also, please note the regulation entitled. "Misbranding by reference to premarket notification" (21CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to
http://www.fda.gov/MedicalDevices/Safety/ReportaProblem/default.htm for the CDRH's Office of Surveillance and Biometrics/Division of Postmarket Surveillance.
You may obtain other general information on your responsibilities under the Act from the Division of Industry and Consumer Education at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm.
Sincerely yours,
## Erin I. Keith -S
Erin I. Keith, M.S. Director Division of Anesthesiology, General Hospital, Respiratory, Infection Control, and Dental Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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Attachment V
Page 1 Of 1
510(k) number: _ K 03/478
Device Name: Microheater
Indications For Use:
The Microheater intended use is for warming blood, blood products and intravenous solution prior to administration. It is intended to be used by healthcare professionals in clinical environments to prevent hypothermia. The system is not meant for the infusion of drugs, or platelet or granulocyte suspensions.
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
Prescription Use
(Per 21 CFR 801.109) OR
Over-The-Counter Use_
(Division Sign-Off) Division of Anesthesiology, General Hospital, Infection Control, Dental Devices
510(k) Number:
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K03 1478
Image /page/3/Picture/2 description: The image shows the logo for Belmont Instrument Corporation. The logo features a stylized "B" followed by the word "Belmont" in a bold, sans-serif font. Below "Belmont" is the text "Instrument Corporation" in a smaller font. Underneath the logo is the text "Creating a New Standard of Care".
Attachment Ill
Registered in Accordance with ISO-9001 and EN 46001
## Premarket Notification 510(k) Summary of Safety and Effectiveness [As Required By 21 CFR 807.92(a)]
- 1. Submitter & Belmont Instrument Corporation Manufacturing Site: 780 Boston Road Billerica, MA 01821
Establishment Registration Number: 1219702
- 2. Contact Person: Uraiwan P. Labadini, Quality Assurance/Regulatory Affairs Manager
Telephone: (978) 663-0212 Ext. 28 Fax: (978) 663-0214
- 3. Trade Name: Belmont Microheater
- 4. Common name: Nonelectromagnetic Blood or Fluid Warming Device
- ട. Classification name: Blood/Fluid Warmer
- 6. Product Code: 81BSB Device Class: Classified as a Class II device per Federal Register July, 1978.
- 7. Legally marketed predicate device to which substantial equivalence is claimed: Estill Medical Technologies, Inc. Thermal Angel™ Blood/Fluid Warmer.
- 8. Brief Description: The Belmont Microheater is a portable in-line blood and fluid warmer. It consists of three components, a heater unit, a power module which powers the heater unit and displays alarm and status messages, and a single-use disposable heat exchanger set. The heating technology used is resistive heating of two plates within the heater unit.
780 Boslon Road. Billerica, MA 01821 tel 978.663.0214 www.belmonlinstrument.com
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The Microheater warms intra-venous fluids, including blood and blood products, to physiological temperature, and monitors fluid temperature. It also senses lack of IV fluid flow, or empty cartridge, and a number of internal fault conditions including over-heating, loss of electrical connection to the heater, and failure to heat. The device stops heating and alarms if an alarm or fault condition occurs. The system provides the user with alarm, alarm message, temperature, and other operating information via a bright alphanumeric display.
The sterile disposable set is placed in-line between a standard IV line at its input and a user-supplied cannula or IV infusion set at its output. The input can come from a gravity fed IV line with roller clamp and drip chamber, external to the device and not supplied by Belmont Instrument Corp. The Microheater is not meant to be used with pressurized infusers.
The device is intended for low applications where the flow rate is 6 liter/hour (100 ml/min) or less.
- 9. Intended Use: The Microheater intended use is for warming blood, blood products and intravenous solution prior to administration. It is intended to be used by healthcare professionals in clinical environments to prevent hypothermia. The system is not meant for the infusion of drugs, or platelet or granulocyte suspensions.
## 10. Summary of the technological characteristics of the Belmont Microheater:
The heater unit is powered with 15 V pulsed DC which is derived from 120 or 230 VAC, 47 - 63 Hz AC/DC Converter. The temperature of the infused fluids, visual and audible alarms, and other performance characteristics of the heater unit are controlled electronically. The disposable set consists of a molded frame to which a plastic film is bonded to one side and a microporous membrane is bonded to the other to form the fluid path. The disposable set has a sterile, non-pyrogenic fluid path, and is for single-patient use only.
## 11. Summary of Nonclinical Tests and Results
In order to verify performance of the Belmont Microheater in support of substantial equivalence, the following tests were carried out:
- Verify the ability of the system to warm cold fluids to physiological a. temperature.
- b. Verify the ability of the system to detect and alarm at unsafe or ineffective operating conditions.
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C.
the fluid.
Verify that the device is in compliance with the following standards:
- ANSI/AAMI/ISO 11135-1994. Medical Devices. Validation and Routine ● Control of Ethylene Oxide Sterilization; SAL 10°. . ANSI/AAMI/ISO 10993-1: 1995 Biological Evaluation of Medical devices - Part 1: Guidance on selection of tests. . UL 2601-1, Underwriter Laboratories, Medical Electrical Equipment, Part 1, General requirements for Safety. . CAN/CSA C22.2 No. 601-1-M90, Medical Electrical Equipment, Part 1, General requirements for Safety. . EN 60601-1, Medical Electrical Equipment, Part 1, General requirements for Safety. . EN 60601-1-2 Medical Electrical Equipment, Part 1, General
- 12. Conclusion: The Belmont Microheater Blood/Fluid Warmer is substantially equivalent to the Estill Medical Technologies, Inc. Thermal Angel™ Blood/Fluid Warmer which received 510(k) approval on July 1, 1999. Both systems have the same intended use, and are capable of heating blood products or intravenous fluids prior to administration to physiological temperature. Both systems have an independent fail-safe circuit which stops heating and alarms if the system overheats
compatibility.
requirements for Safety 2. Collateral Standard: Electromagnetic
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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.
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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.
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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.
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Reading rule for every project: how many summaries do you read in full?
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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.
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Click "Show Chart" and segment by Regulation Number. Clicking a regulation takes you to the regulations tree.
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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.
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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.