# Illumi Medical

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/illumi-medical

- Industry: Medical Devices & Equipment
- Headquarters: Nagoya, Japan
- Website: www.illumimedical.com
- Total disclosed funding: $3.4M
- Latest round: Series A (Apr 30, 2026)
- Investors on record: 11

## About

Based in Aichi, Japan, and founded by Toshihiko Tsukamoto, President, CEO, and Representative Director in 2023, Illumi Medical Co., Ltd. d.b.a. Illumi Medical operates as a medical devices and equipment company specializing in devices for delivering light through blood vessels. In April 2026, Illumi Medical raised an undisclosed amount in series A funding from Prime Partners and Nagoya Capital Partners. This round was part of a larger equity and debt funding, bringing the total series A funding to JPY 550 million.

The company focuses on developing methods and devices that can deliver light to deep parts of the body such as the brain, pancreas, liver, kidneys, and lungs. Illumi Medical's device allows light to be delivered via blood vessels. The device has a small diameter (1.0-1.5 mm in diameter) that can be delivered via the blood vessel, and by irradiating the device with a specific intensity and density from the tip of the device to the side of the blood vessel (the side of the blood vessel wall). The device has significant potential for treating a wide range of diseases, including cancer, nervous system diseases, and regenerative medicine, as of April 2024.

The company plans to use the April 2026 funding to advance product development through mass production readiness for clinical trials, execute a global regulatory and insurance strategy for international collaborative trials, expand the treatment and diagnostic pipeline into new disease areas through strategic alliances, and strengthen its organization by securing core talent to support global expansion.

## Funding rounds

- Series A, Apr 30, 2026 — Prime Partners, Nagoya Capital Partners
- Series A, Jan 30, 2026 — Nagoya Small and Medium Business Investment & Consultation, ICHINEN HOLDINGS CO., LTD.
- Series A, Oct 20, 2025, $2.3M — SMBC Venture Capital, UntroD Capital, mint, OKB Capital, Meinan Management Capital, Regional, Talent and Future
- Seed, Apr 1, 2024, $1.1M — UntroD Capital, mint, MTG Ventures, OKB Capital

## Investors

- UntroD Capital — Seed, Series A
- mint (https://capitalatlas.ai/funds/mint) — Seed, Series A
- MTG Ventures (https://capitalatlas.ai/funds/mtg-ventures) — Seed
- OKB Capital (https://capitalatlas.ai/funds/okb-capital) — Seed, Series A
- SMBC Venture Capital (https://capitalatlas.ai/funds/smbc-venture-capital) — Series A
- Meinan Management Capital (https://capitalatlas.ai/funds/meinan-management-capital) — Series A
- Regional, Talent and Future (https://capitalatlas.ai/funds/regional-talent-and-future) — Series A
- Nagoya Small and Medium Business Investment & Consultation (https://capitalatlas.ai/funds/nagoya-small-and-medium-business-investment-consultation) — Series A
- ICHINEN HOLDINGS CO., LTD. — Series A
- Prime Partners (https://capitalatlas.ai/funds/prime-partners) — Series A
- Nagoya Capital Partners (https://capitalatlas.ai/funds/nagoya-capital-partners) — Series A