1103 DIGITAL BLOOD PRESSURE MONITOR, MODEL LD 1103, 1133 DIGITAL BLOOD PRESSURE MONITOR, MODEL LD 1133
K093359 · Shanghai Little Doctor Co. Limited · DXN · Nov 27, 2009 · Cardiovascular
Device Facts
Record ID
K093359
Device Name
1103 DIGITAL BLOOD PRESSURE MONITOR, MODEL LD 1103, 1133 DIGITAL BLOOD PRESSURE MONITOR, MODEL LD 1133
Applicant
Shanghai Little Doctor Co. Limited
Product Code
DXN · Cardiovascular
Decision Date
Nov 27, 2009
Decision
SESE
Submission Type
Special
Regulation
21 CFR 870.1130
Device Class
Class 2
Indications for Use
LD1103 and LD 1133 Digital Blood Pressure Monitor are intended for use by medical professionals in medical care facilities or by patients for self monitoring at home to monitor and display diastolic, systolic blood pressure and pulse rate of adult, with the cuff around the upper arm, which is same as predicate device.
Device Story
Digital blood pressure monitors (LD1103, LD1133) measure systolic/diastolic blood pressure and pulse rate; utilizes non-invasive oscillometric method; electronic semiconductor sensor detects cuff pressure alterations; converts to electrical signals; processes signals to calculate BP and pulse; displays results. Used by medical professionals in clinics or patients at home. Features include WHO blood pressure classification, date/time display, and memory recall. Output informs clinical decision-making regarding hypertension management and patient monitoring.
Clinical Evidence
Bench testing only. Testing included general functions, reliability (operation, drop, storage, vibration), EMC, and safety testing per IEC/EN 60601-1, IEC/EN/ANSI 60601-1-2, ISO 10993-1, and ANSI/AAMI SP10-2002. No clinical data presented.
Technological Characteristics
Oscillometric measurement principle using electronic semiconductor sensor. Upper arm cuff inflation/exhaust system. Features WHO classification, memory recall, and date/time display. Complies with IEC 60601-1, IEC 60601-1-2, ISO 10993-1, and ANSI/AAMI SP10-2002. Software includes subprograms for auxiliary features; core BP algorithm is unchanged from predicate.
Indications for Use
Indicated for adult patients for the non-invasive measurement of systolic and diastolic blood pressure and pulse rate using the oscillometric method via an upper arm cuff. Suitable for use in clinical settings or home environments.
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.
Predicate Devices
Digital blood pressure monitor, model LD 578 (K061279)
Submission Summary (Full Text)
{0}------------------------------------------------
Image /page/0/Picture/0 description: The image shows handwritten text on a white background. The text at the top reads 'K093359', and below that, it says 'Pg 1 of 4'. The handwriting appears to be somewhat rough, with the numbers and letters not perfectly formed.
## Attachment 2
# 510k summary
NOV 2 7 2009
This summary of 510(k) safety and effectiveness information is being submitted in accordance with the requirements of SMDA 1990 and 21 CFR Section 807.92. The assigned 510(k) number is:
### A. General Information on submitter
1. Submitter's Name:
SHANGHAI LITTLE DOCTOR ELECTRONIC CO., LTD.
2. Address:
NO. 8, TONGXING ROAD, ECONOMIC AND TECHNOLOGICAL DEVELOPMENT DISTRICT, NANTONG CITY, JIANGSU PROVINCE, 226007. CHINA.
3. Telephone: 4. Contact Person: 5. Date Prepared: 6. Registration Number:
7. Owner Number of Registration:
B. General information of modified devices
1. Name:
2. Trade Name:
3. Common Name:
4. Classification Name:
5. Product Code :
0086-513-8598 6718 Mr. Janusun Wang 10/20/2009 3005907323 9086965
Digital BP monitor Digital blood pressure monitor, model LD 1103 and LD 1133 Electronic Sphygmomanometer System, measurement, blood pressure, non-invasive DXN
(-2
{1}------------------------------------------------
6. Class: 7. Regulation Number:
#### II 870.1130
## C. Identification of FDA Cleared Devices(predicate)
Digital blood pressure monitor, model LD 578 1. Name:
2. K Number: K061279
3. Date Cleared: August 18, 2006
#### D. Description of the Device
The Digital Blood Pressure Monitors, Model LD1103 and LD 1133, are designed to measure the systolic and diastolic blood pressure and pulse rate of an individual adult by using a non-invasive technique in which an inflatable cuff is wrapped around the upper arm. The method to define systolic and diastolic pressure is similar to the auscultatory method but uses an electronic semiconductor sensor rather than a stethoscope and mercury manometer. The sensor converts tiny alterations in cuff pressure to electrical signals, by analyzing those signals to define the systolic and diastolic blood pressure and to calculate pulse rate, which is a well-known technique in the market called the "oscillometric method". The device can analyze the signals promptly and display the results.
#### E. Intended Use Statement
LD1103 and LD 1133 Digital Blood Pressure Monitor are intended for use by medical professionals in medical care facilities or by patients for self monitoring at home to monitor and display diastolic, systolic blood pressure and pulse rate of adult, with the cuff around the upper arm, which is same as predicate device.
#### F. Comparisons to the predicate
The modified devices have the same intended use and identical fundamental scientific principle called oscillometric BP measurement method. They are identical in safety and effectiveness of the intended use to the 510(k) cleared device model LD578. The modifications to our original 510(k) cleared device include dimensional specifications and adding new auxiliary features of WHO and date and time indication.
The modifications that were made are:
- 1. Appearance
- 2. WHO blood pressure classification indication
- 3. Increase the number of memory recalls
- 4. Date and time display
- 5. Inflation and exhaust components
{2}------------------------------------------------
C - 2
6. Packaging and wording in instruction manual
Please find the following tabulated comparisons supporting that the modified devices are substantially equivalent to the predicate device with FDA 510K# K061279
| Technological Characteristics Comparisons table | |
|-------------------------------------------------|----------------|
| Intended use | identical |
| Fundamental scientific principle | Identical |
| Target population | Identical |
| Use at home or in hospital | Identical |
| Safety and effectiveness | Identical |
| Over the counter | Identical |
| Performance specifications | Identical |
| Stirility | Not applicable |
| Biocompatibility | Identical |
| Mechanical safety | Identical |
| Electrical safety | Identical |
| Standards met | Identical |
| Energy used or delivered | Identical |
| Environmental specifications | Identical |
| Ergonomics of the patient-user interface | Identical |
| Software | Similar |
| Packaging or labeling | Similar |
| Dimensional specification | Similar |
Technological Cha
### G. Discussion of Similarities and Differences
The modified devices are identical to the predicate in functionality and performance with the only differences being the additional features, such as WHO indication, date and time display and an increased recall capacity of measurement results. The modifications to our original 510(k) cleared device include the dimensional specifications, inflation and exhaust components, packaging and labeling and subprogram of software for WHO indication and date and time display. The blood pressure measurement algorithm and its software codes of the modified devices remain unchanged. The fundamental scientific technology of the modified device remains the same as that of the 5l0(k) cleared device. These differences have no impact on safety or effectiveness of the device in use for blood pressure measurement.
#### H. Performance testing
{3}------------------------------------------------
The subjects have been tested and found otherwise to comply with the following standards:
* IEC/EN 60601-1, Medical electrical equipment - Part 1: General requirements for basic safety and essential performance
*IEC/EN/ANSI 60601-1-2, Medical Electrical Equipment - Part 1-2: General requirements for safety - Collateral standard: Electromagnetic compatibility -Requirements and Test
* ISO 10993-1, Biological Evaluation Of Medical Devices - Part 1: Evaluation And Testing
*ANSI/AAMI SP10-2002, Manual, Electronic or Automated Sphyamomanometers
The following testing was conducted:
a. General Functions Test
b. Reliability Test - Operation Conditions
c. Reliability Test - Drop Testing
- d. Reliability Test Storage
e. Reliability Test - Vibration Testing
f. EMC Testing
g. IEC 60601-1 Safety Testing
None of the testing demonstrated any design characteristics that violated the requirement of the Reviewer Guidance or resulted in any safety hazards
#### I. Conclusions:
The LD1103 and LD 1133 Digital Blood Pressure Monitor are as safe and effective as the predicate device in intended use for blood pressure measurement, based on electrical, mechanical and environmental testing results, and SP-10 standard requirements. Therefore, these two modified devices are substantially equivalent to the predicate device in use for BP measurement.
4
{4}------------------------------------------------
Image /page/4/Picture/1 description: The image shows the logo for the Department of Health & Human Services (HHS). The logo features a stylized depiction of a bird or eagle, with its wings forming a human profile. The text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" is arranged in a circular pattern around the bird symbol.
Food and Drug Administration 10903 New Hampshire Avenue Document Control Room W-O66-0609 Silver Spring, MD 20993-0002
Shanghai Little Doctor Co. Limited C/O Janusun Wang, Regulatory Affairs Representative Shanghai Little Doctor Co. Limited No. 8, Tongxing Road Nantong, Jiangsu 226007 China
NOV 2 7 2009
Re: K093359
Trade/Device Name: 1103 Digital Blood Pressure Monitor, Model ID 1103 and 1133 Digital Blood Pressure Monitor, Model ID 1133 Regulation Number: 21 CFR 870.1130 Regulation Name: Non-invasive blood pressure measurement system Regulatory Class: Class II Product Code: DXN Dated: October 19, 2009 Received: October 28, 2009
Dear Janusun Wang:
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 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
{5}------------------------------------------------
Page 2 - Janusun Wang
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/ucm115809.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/Reportal?roblem/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,
W.M.P.
Bram D. Zuckerman, M.D. Director Division of Cardiovascular Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
{6}------------------------------------------------
# Attachment 1
#### Indications for use
Kos3359 510(k) Number (if known):
Device Name: Littledoctor Digital BP Monitor LD 1103 and LD 1133
## Indications for Use:
The subjects are intended to be used for measuring blood pressure(systolic and diastolic pressure) and pulse rate, for adult, by oscillometric method, upon the upper arm and at home or in hospital.
Prescription Use Over-The-Counter Use FrescriptTon Use -------------------------------------------------------------------------------------------------------------------------------------------------------------(21 CFR 801 Subpart C)
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE OF NEEDED)
Concurrence of CDBH, Office of Device Evaluation (ODE)
(Division Sign-Off)
Division of Cardiovascular Devices
510(k) Number *K993359*
Page *1* of __
1 of 1
C -1
Predicate graph will load when search results are available.
Embedding visualization will load when search results are available.
PDF viewer will load when search results are available.
Loading panels...
Select an item from Submissions
Click any panel, subpart, regulation, product code, or device to see details here.
Section Matches
Results will appear here.
Product Code Matches
Results will appear here.
Special Control Matches
Results will appear here.
Loading collections...
Loading
My Alerts
You will receive email notifications based on the filters and frequency you set for each alert.
Sort by:
Create Alert
Search Filters
Agent Token
Create a read-only bearer token for Claude, ChatGPT, or other agents that can call HTTP APIs.
Copy this now. It will not be shown again.
Connected apps
Apps you authorized through browser sign-in. Disconnecting revokes their access immediately.
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.