M-Chat

MS-AI

AI platform for medical institutions

MedSync staff in a meeting, looking at a computer screen

OVERVIEW

Ask AI to search and summarize
your in-house documents and clinical records.

M-Chat is generative AI that runs in a dedicated environment for each medical institution. Draw on your in-house documents and clinical records to look things up, summarize, and create drafts.

It helps you find and compare documents, then write up what you learn. Work involving patient information is handled in Clinical mode, which runs in your facility’s dedicated environment.

In-house information

Internal policiesManualsClinical informationMedical documentsRegulatory information

The M-Chat answer screen. The answer is organized under the headings “Japan,” “International (English),” and “Rare disease (FOP),” with links to supporting sources such as the Japanese Orthopaedic Association, the Japan Intractable Diseases Information Center, PMDA, and PubMed.

Close-up of the M-Chat answer screen (smartphone version), showing links to supporting sources under the heading “Rare disease (FOP).”

Answers are organized under headings, with linked sources you can check.
*Screens shown are in development.

CONDITIONS

Patient information and in-house documents,
properly managed and put to use.

Consumer generative AI is convenient.
But before you use it at your facility, there are some decisions to make.

What to decide first

  • How to handle patient information
  • How to manage who can use it
  • Which in-house documents the AI can reference
  • What can be sent outside the facility
  • Who reviews the output
How M-Chat handles this

In Clinical mode, you can enter patient information without masking names, to the extent your contract and your facility’s operating rules allow. Available services and users are managed separately for each medical institution.

ASK

Ask what you need to know, in everyday language.

Type a question, then follow up or ask for changes as you read the answer. Conversations are saved, so they’re still there when you come back.

In-house documents

“Where is this procedure written down?”

Record summaries

“Summarize the clinical course and precautions.”

Medical documents

“Draft the report for me.”

Information sharing

“Organize what we need to tell the care team.”

M-Chat can extract diagnoses, medications, and test results from records. You can also search M-Rec clinical records by asking, “What treatment was given last time?”

STRUCTURE

Use AI, under your facility’s control.

Which mode to use, which documents to reference, what is sent outside, how widely things are shared, and how records are kept: M-Chat lets your facility manage all five.

Information flow and controls in M-Chat

Users ask in everyday language

Questions and requests in plain words, such as “Where is this procedure written down?” or “Draft a referral letter from this.”

Healthcare professionals review the answer

AI produces answers and drafts. Healthcare professionals review and edit the content and bear final responsibility.

1. Choose the mode for the task

Work involving patient information uses Clinical mode and is processed on your facility’s dedicated AI server. All other work uses General mode.

2. Use registered information

Draws on the in-house documents and patient information you register to help you search, summarize, and draft documents.

3. Web search with sources

Searches the web and cites sources so you can verify them. Conditions for sending data outside and patient-information checks are described below.

4. Share purpose-built MyChats

Saves your facility’s wording and formats as instructions. Sharing a MyChat (a dedicated AI assistant) for each purpose within your facility makes it easier to draft in a common format.

5. Manage the activity log

The audit log records metadata such as usage, whether files were attached, and source names. It carries a tamper-evident signature and does not include conversation text.

Storing conversations, documents, and attachments

Conversations, in-house documents, and attachments are kept in your facility’s dedicated environment, in a cloud in Japan. They are not used to train AI models.

Patient information is handled in Clinical mode, in line with your contract and your facility’s operating rules. Saved conversations and the audit log are managed separately.

The numbers in the diagram match the numbered headings below.

1. Switch between the two modes

Use Clinical mode for any work involving patient information. One button switches between modes. Each staff member can choose an AI model from those available, regardless of the facility’s default setting.

Clinical mode

Runs on your facility’s dedicated AI server. You can enter patient names and IDs without masking them, and search M-Rec clinical records directly.

General mode

For work that doesn’t involve patient information, such as research and writing.

The M-Chat input field, with a toggle between Clinical mode and General mode, a + button for attaching documents, and a microphone button for voice input
Close-up of the M-Chat input field (smartphone version), showing the + button for attaching documents and the Clinical mode and General mode toggle

Attach PDFs or images, or use voice input. Images up to 5 MB and PDFs up to 25 MB are accepted. File types are verified by their content, not their file extension.
*Screens shown are in development.

2. Register and reference in-house documents

M-Chat bases its answers on the in-house documents you register. If it can’t find a relevant passage, it is designed to answer “No match” rather than fill the gap with guesses. You can also use it to look things up at night and on holidays, and check each answer against its sources.

Example documents

In-house protocolsInternal policiesIncident response manual

3. Search the web, with sources

Even when you search the web, both your input
and the AI’s answer are checked for patient information.

How search works

  1. Checks for patient information before sending, and cancels the search if any is found
  2. Prioritizes the domains of public agencies such as the Ministry of Health, Labour and Welfare (MHLW) and the Pharmaceuticals and Medical Devices Agency (PMDA)
  3. Adds source links to the answer so you can check the evidence later
Conditions for web search

Web search requires setting up a connection to an external search service. It is available only where the patient-information check is enabled, and only when the individual staff member has given consent. That consent covers sending search terms to a search service outside Japan.

4. Share task-specific MyChat assistants within your facility

Create dedicated AI assistants for roles such as clinical care, nursing, and administration. You choose who to share each one with.

Example uses

Referral letter draftsChecking billing rules and regulationsHome-visit nursing reportsQ&A on internal policies

Consistent formatting

Saving your facility’s wording and forms as instructions makes it easier to produce drafts in a common format. Answers can be exported as Word files.

5. Keep saved conversations and the activity log separate

Conversations are saved in your facility’s dedicated environment so you can revisit them. The activity log used to review usage leaves out conversation text, and logging of conversation text on the AI side is turned off. AI processing takes place within Japan, in Tokyo and Osaka. When you use web search, search terms are sent to a search service outside Japan, under the conditions described above.

Examples of what the audit log records

  • Usage
  • Whether files were attached
  • Source names
  • Tamper-evident signature
Stored in your dedicated environment

  • Conversations
  • In-house documents
  • Attachments

Kept in a cloud in Japan and not used to train AI models.

NOTES

What AI creates is a draft.

Healthcare professionals review and edit the content.
They also bear final responsibility.

Please note

Screens shown are in development and may differ from the actual product. What information may be entered depends on your contract and on the judgment of the person responsible for your facility.

CONTACT

Start by walking us through
your current process.

You don’t need to have a service in mind.

Example requests

  • We’re looking for an AI environment that can handle patient information
  • We want to know whether AI can take on this task

We’ll ask about your current work and the documents you want to use, then propose which tasks AI can streamline and which steps need human review.

Information as of September 2026. We continue to add and improve features.