JOINSOON ELECTRONICS MFG CO. LTD HIGH SPEED DIGITAL THERMOMETER, MODEL TC-001
Applicant
Joinsoon Electronics Mfg Co, Ltd.
Product Code
FLL · General Hospital
Decision Date
Jul 21, 2010
Decision
SESE
Submission Type
Special
Regulation
21 CFR 880.2910
Device Class
Class 2
Attributes
Pediatric
Indications for Use
This device is an electronic clinical thermometer using a thermistor to detect body temperature from the oral, armpit and rectal in the neonatal pediatric and audit population used in the clinical and home testing.
Device Story
Joinsoon TC-001 is a high-speed digital thermometer using a thermistor sensor to measure human body temperature. Device operates in clinical and home environments; used by patients or clinicians. Input is thermal energy from oral, rectal, or axillary sites; output is a digital temperature reading displayed to the user. Device assists in screening, monitoring, and diagnosing fever or hypothermia. It functions as a handheld electronic tool for rapid temperature assessment.
Clinical Evidence
Bench testing only. Compliance with ASTM E1112-00, IEC60601-1, and IEC60601-1-2 standards demonstrated equivalence.
Technological Characteristics
Electronic clinical thermometer using a thermistor sensor. Complies with ASTM E1112-00, IEC60601-1, and IEC60601-1-2. Operating range 10°C to 40°C. Handheld form factor.
Indications for Use
Indicated for neonatal, pediatric, and adult populations for oral, axillary, or rectal temperature measurement in clinical or home settings to screen for fever or hypothermia. Weight > 2.5 kg.
Regulatory Classification
Identification
A clinical electronic thermometer is a device used to measure the body temperature of a patient by means of a transducer coupled with an electronic signal amplification, conditioning, and display unit. The transducer may be in a detachable probe with or without a disposable cover.
Special Controls
(1) Device is not a clinical thermometer with telethermographic functions;
(2) Device is not a clinical thermometer with continuous temperature measurement functions; and
(3) Appropriate analysis and testing (such as that outlined in the currently FDA-recognized editions, as appropriate, of ISO 80601-2-56, “Medical electrical equipment—Part 2-56: Particular requirements for basic safety and essential performance of clinical thermometers for body temperature measurement,” or ASTM E1965, “Standard Specification for Infrared Thermometers for Intermittent Determination of Patient Temperature,” or ASTM E1112, “Standard Specification for Electronic Thermometer for Intermittent Determination of Patient Temperature,” or ASTM E1104, “Standard Specification for Clinical Thermometer Probe Covers and Sheaths”) must validate specifications and performance of the device.
Predicate Devices
TEMPTELLER - HIGH SPEED DIGITAL THERMOMETERS, MODELS DT-302, DT-312, DT-412, DT-502 (K042202)
Submission Summary (Full Text)
{0}------------------------------------------------
K101232
# JUL 2-1 2010
#### EXHIBIT #1
#### 510(k) Summarv
This summary of 510(k) safety and effectiveness information is being submitted in accordance with the requirements of SMDA 1990 and 21 CFR §807.92.
# Date prepared: April 29, 2010.
- 1. Applicant: Joinsoon Electronics MFG. Co., Ltd. 19F., No. 79, Sec. 1. Sintai 5th Rd., Sijhih City, Taipei County 221, Taiwan, R.O.C. Phone: +886-2-2698-4882 Fax: +886-2-2698-4883
## 2. Submitter:
Mr. Jigar Shah Official Correspondent for Joinsoon Electronics MFG. Co., Ltd. mdi Consultants, Inc. 55 Northern Blvd., Suite 200 Great Neck, New York 11021 Tel: 516-482-9001 Fax: 516-482-0186 Jigar@mdiconsultants.com
#### 3. Trade/proprietary Name:
Joinsoon Electronics MFG. Co., Ltd. High Speed Digital Thermometer Model TC-001
# 4. Classification name:
Common Name: Clinical Electronic Thermometer Requiation: 21 CFR Part 880.2910
- 5. Product Code: FLL
- 6. Predicate Devices:
TEMPTELLER - HIGH SPEED DIGITAL THERMOMETERS, MODELS DT-302. DT-312, DT-412, DT-502 Previously cleared 510(k) number: K042202
#### 7. Device Description
The device Joinsoon Electronics MFG. Co., Ltd. High Speed Digital Thermometer Model TC-001 which is based on the 510(k) 042202 model DT-312 is designed to measure the human body temperature in the mouth or rectum. This device is used under the condition(s) or disease(s) to be screened, monitored, treated, or diagnosed:
Fever -
1
{1}------------------------------------------------
- i Hypothermia
The device is intended use at the following conditions:
- Age: newborn to geriatric -
- Weight: > 2.5 kg
The device operating conditions is between 10°C to 40°C (50°F to 104°F).
The Fundamental Scientific technology of the modified device remains the same as that of the 510(k) cleared device.
## 8. Intended Use:
This device is an electronic clinical thermometer using a thermistor to detect body temperature from the oral, armpit and rectal in the neonatal pediatric and audit population used in the clinical and home testing.
#### 9. Substantial Equivalence Discussion:
The Joinsoon Electronics MFG. Co., Ltd. High Speed Digital Thermometer Model TC-001 is substantially equivalent to the original 510(K) 042202, Model DT-312 in all aspects, e.g., technological characteristics, modes of operation, performance characteristics, intended use, etc.,
The only differences in the predicate version of the Digital thermometer are PCB layout involving Performance Specifications and Housing for Ergonomics of the Patient-UI.
The Fundamental Scientific technology of the modified device remains the same as that of the 510(k) cleared device.
## 10. Discussion of Non-Clinical Tests Performed for Determination of Substantial Equivalence are as follows:
Compliance to applicable voluntary standards includes ASTM E1112-00, as well as IEC60601-1 and IEC60601-1-2 requirements.
Guidance documents included the "FDA Guidance on the content of Premarket Notification (510(k)) Submissions for Clinical Electronic Thermometers".
#### 11. Conclusion:
The Joinsoon Electronics MFG. Co., Ltd. High Speed Digital Thermometer Model TC-001 has the same intended use and similar technological characteristics as the Predicate device. Moreover, bench testing contained in this submission supplied demonstrate that any differences in their characteristics do not raise any new questions of safety or effectiveness. Thus the Joinsoon Electronics MFG. Co., Ltd. High Speed Digital Thermometer Model TC-001, is substantially equivalent to the predicate device.
{2}------------------------------------------------
# DEPARTMENT OF HEALTH & HUMAN SERVICES
Food and Drug Administration 10903 New Hampshire Avenue Document Control Room -WO66-G609 Silver Spring, MD 20993-0002
Joinsoon Electronics Manufacturing Company, Limited C/O Mr. Jigar Shah MDI Consultants, Incorporated 55 Northern Boulevard, Suite 200 Great Neck, New York 11021
JUL 2-1 2010
# Re: K101232
Trade/Device Name: Joinsoon Electronics Manufacturing Company, Limited High Speed Digital Thermometer. Models TC-001 Regulation Number: 21 CFR 880.2910 Regulation Name: Clinical Electronic Thermometer Regulatory Class: II Product Code: FLL Dated: June 24, 2010 Received: June 25, 2010
#### Dear Mr. Shah:
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.
{3}------------------------------------------------
Page 2- Mr.Shah
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); medical device reporting (reporting of medical device-related adverse events) (21 CFR 803); 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.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please go to
http://www.fda.gov/AboutFDA/CentersOffices/CDRH/CDRHOffices/ucml15809.htm for the Center for Devices and Radiological Health's (CDRH's) Office of Compliance. 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/ReportalProblem/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 Small Manufacturers, International and Consumer Assistance at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address http://www.fda.gov/MedicalDevices/Resourcesfor You/Industry/default.htm.
Sincerely yours.
Rh for
Anthony D. Watson, B.S., M.S., M.B.A. Director Division of Anesthesiology, General Hospital. Infection Control and Dental Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
{4}------------------------------------------------
Exhibit 3
## Indications for Use
Page 1 of of 1
510(k) Number (if known):
Device Name: Joinsoon Electronics Mfg. Co., Ltd. High Speed Digital Thermometer. Models TC-001
#### Indications For Use:
This device is an electronic clinical thermometer using a thermistor to detect body temperature from the oral, armpit and rectal in the neonatal pediatric and audit population used in the clinical and home testing.
Prescription Use (Per 21 CFR 801 Subpart D)
OR
X Over-The Counter Use (21 CFR 807 Subpart C)
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
(Division Sign-Off)
Division of Anesthesiology, General Hospital Infection Control, Dental Devices
K101232 510(k) Number:
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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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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
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Reading rule for every project: how many summaries do you read in full?
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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.
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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.
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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.