TOKO DS

What TOKO DS does

TOKO DS (Tokodenki Seisakusho Co., Ltd.) is a Japanese medical device and precision instrument contract manufacturer founded in June 1963 and operating as a subsidiary of MIRAPRO Co., Ltd. since 2019. The company provides end-to-end OEM services — material procurement, sub-assembly, mechanical and electrical assembly, micro-soldering, quality inspection, and final packaging — primarily to large Japanese medical device OEMs. Its core products include ultrasound diagnostic probes (convex, micro-convex, sector, linear, transvaginal, transrectal), clinical laboratory systems, surgical microscopes, wearable healthcare devices, and other precision instruments. Production of approximately 25,000 OEM units per year is split across two ISO 13485/ISO 9001-certified facilities: the Ome Factory (1,495.96 sqm, Tokyo) and the Kashiwa Factory (298.08 sqm, Chiba), with headquarters in Musashino, Tokyo.

The company's primary differentiator is sub-millimeter manual micro-soldering capability — specifically AWG50 ultra-fine coaxial cable (0.025mm diameter wire) and 0.2mm pitch components — performed by certified technicians under stereomicroscopes. It maintains ISO 13485 certification since 2014, Japanese Pharmaceutical and Medical Device Act manufacturing licenses at both sites, EcoAction 21 environmental certification since 2009, and A-rank factory audit ratings from major medical device manufacturer clients. A 100% medical cable inspection system (10,000+ units/month) was instituted as of February 2026, supplementing the JIRA-based non-conformance tracking workflow covering 13 defect classifications.

Revenue derives from per-unit contract manufacturing fees billed under quote-based pricing on both prototype (single-unit) and mass production (up to approximately 10,000 units/year per product line) engagements, with a secondary revenue stream from the TOKO DS IT Services division (operational manual production, technical translation, IT device testing, and web application testing). The business model is sales-led enterprise field sales targeting large Japanese medical device OEMs via direct outreach, factory tours, and customized feasibility proposals, with a small inside-sales team handling domestic and overseas inquiries. Customer concentration is high by structure (enterprise OEM anchor accounts), though no individual customer names are publicly disclosed. Strategic partnerships include the MIRAPRO Group parent (2019), affiliated MAT Co., Ltd. for design development, and most recently Oak Sonic Corporation (October 2025) for integrated ultrasound device development-to-mass-production.

Name

TOKO DS

Legal name

Tokodenki Seisakusho Co., Ltd.

Website

https://tokods.com

Company type

Private

Founded year

1963

Operating status

Operating

Headcount range

51–100 employees

Short description

TOKO DS is a Japanese medical device and precision instrument contract manufacturer (founded 1963, subsidiary of MIRAPRO Group) serving large Japanese medical device OEMs with ISO 13485-certified micro-soldering (AWG50, 0.2mm pitch) and assembly across ultrasound probes, clinical laboratory systems, and wearable healthcare devices, producing approximately 25,000 OEM units per year from two Tokyo-area factories.

Ownership category

akta.pro rank

Product category

Medical Device Contract Manufacturing

NAICS

Navigational, Measuring, Electromedical, and Control Instruments Manufacturing (33451)

SIC

Surgical & Medical Instruments & Apparatus (3841)

akta.pro primary industry

Industrial Electronics Manufacturing Services (EMS) (IMAGAGAA)

Keywords

• Medical device manufacturing
• Contract OEM services
• Micro soldering services
• Ultrasound probe assembly
• Precision instrument assembly

Headquarters

HQ city

Musashino

HQ country

Japan

HQ region

Asia

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Infrastructure, Supply Chain, Marketing or Sales

Revenue model

1. Medical Device Manufacturing / OEM: Contract manufacturing of medical devices and precision equipment from prototype through mass production. Services include material procurement, precision assembly, micro-soldering, quality inspection, and final packaging. Revenue generated through manufacturing service fees based on production volume and complexity. Handles both small-lot prototypes and large-scale production runs up to approximately 25,000 units/year.
2. IT Services (TOKO DS IT Division): IT services including operational manual production, technical translation, IT device testing, and web application testing. Services provided through the TOKO DS brand as a division of Tokodenki Seisakusho. Started with printer testing in 2002 and expanded to MFP, mobile phones, AV equipment testing. Revenue generated through professional service fees.

Pricing tiers

Go-to-market motion3 records

Distribution channels3 records

Marketing channels6 records

Core offering

TOKO DS is a contract medical device and precision instrument manufacturer offering end-to-end OEM services from prototype through mass production. Core offerings include manufacturing of ultrasound diagnostic probes, clinical laboratory systems, and wearable healthcare devices, supported by micro-soldering capabilities down to AWG50 ultra-fine coaxial cables (0.025mm diameter) and 0.2mm pitch components, plus full mechanical/electrical assembly in ISO 13485-certified facilities.

Product overview

TOKO DS is a contract manufacturing company specializing in medical devices and precision instruments, operating as part of the Mirapro Group. The core offerings include: (1) Ultrasound Scanner Probes - manufacturing various diagnostic probe types with micro-soldering and precision assembly; (2) Clinical Laboratory Systems - mechatronics assembly for specimen processing equipment; (3) Micro Soldering Services - AWG50 ultra-fine wire soldering down to 0.2mm pitch; (4) Unit/Device Assembly - mechanical and electrical assembly for medical equipment; supported by two manufacturing facilities (Ome Factory and Kashiwa Factory) and an IT Services division providing manual production, technical translation, and testing services. Annual OEM production capacity reaches approximately 25,000 units across all product categories.

Differentiator

Problem solved

Functional benefit

Products and services

• Ultrasound Scanner Probes Manufacturing
• Clinical Laboratory Systems Manufacturing
• Micro Soldering Services
• Unit Assembly Services
• IT Services
• Other Precision Manufacturing Services

Quantifiable outcome

• ~25,000 OEM units produced annually across medical devices
• +4 more outcomes

Named customers1 record

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Four partnerships are on record, tiered flagship, core and minor.

• Oak Sonic Corporation (株式会社オークソニック)flagshipStrategic or Co-development Partner · 1 October 2025TOKO DS and Oak Sonic Corporation signed a basic agreement for business partnership collaboration (業務提携に向けた基本合意). The partnership aims to build an integrated system from ultrasound device development to mass production, strongly supporting customers' product development. The announcement was featured on the company homepage as a key pickup item, indicating strategic importance. The partnership was announced in October 2025.
• MIRAPRO Co., Ltd. (株式会社ミラプロ)coreStrategic or Co-development Partner · 1 January 2019MIRAPRO Co., Ltd. is the parent company of TOKO DS (Tokodenki Seisakusho), having established capital and business partnership in 2019. MIRAPRO provides strategic direction and enables TOKO DS to leverage group capabilities for medical device design and manufacturing. TOKO DS operates under the MIRAPRO Group Management Philosophy and contributes to the group's mission of enriching people's lives through healthcare manufacturing. Group coordination enables customers to access design-to-mass-production services spanning TOKO DS's manufacturing expertise and MIRAPRO's design capabilities.
• MAT Co., Ltd (Mirapro Advanced Technology Co., Ltd.) (エムエーティー株式会社)coreStrategic or Co-development Partner · 1 January 2019Mirapro Advanced Technology Co., Ltd. (MAT) is an affiliated company within the MIRAPRO group. TOKO DS collaborates with MAT to provide comprehensive medical device manufacturing services, including design development support. MAT handles design engineering work for improved models and successor devices, while TOKO DS manages manufacturing, enabling end-to-end customer support from initial design through mass production.
• Jun Ogasawara (小笠原 淳) / Gifts Co., Ltd. (株式会社Gifts)minorOthersJun Ogasawara, CEO of Gifts Co., Ltd. and a medical doctor with a PhD in medicine (Keio University), serves as an advisor (外部アドバイザー/顧問) to TOKO DS. His background includes ob-gyn specialty, sports medicine, and brain-AI fusion research. He contributes medical and clinical expertise to TOKO DS's medical device manufacturing, helping drive technology evolution and service improvement. His involvement spans Keio University School of Medicine and the Tokyo 2020 Olympic equestrian competition medical team.

Scale indicators8 records

Recent moves9 records

Expansion highlights5 records

Regional players

• Yokowo Co., Ltd. Japanese precision manufacturer of components, antennas, and contract-manufactured assemblies for medical and automotive customers. Comparable to TOKO DS as a Japan-based precision assembly and contract manufacturer.
• Topre Corporation: Japanese precision manufacturer with a large press and sheet metal business plus EMS-style contract manufacturing for industrial and medical customers. Comparable to TOKO DS as a Japan-based precision contract manufacturer with automotive and medical OEM relationships.

Broad incumbents

• Kimball Electronics: Global EMS provider with a dedicated medical/life sciences segment offering precision assembly, micro-soldering, and contract manufacturing services. Comparable as a contract manufacturer with a medical-device-focused service line and similar assembly capabilities.
• Celestica Inc. Global EMS with a healthcare/life-sciences practice providing precision assembly and end-to-end manufacturing services for medical device OEMs. Comparable to TOKO DS as a mid-to-large medical contract manufacturer serving regulated OEMs.
• Flex Ltd. Global EMS with a Health Solutions business serving medical device and diagnostics OEMs with precision assembly and manufacturing services. Comparable to TOKO DS in providing contract manufacturing for regulated medical device customers.
• Jabil Inc. Global EMS with a Healthcare segment providing precision assembly, test, and supply chain services for medical device manufacturers. Comparable to TOKO DS as a large-scale medical contract manufacturer with similar quality system expectations.
• Sanmina Corporation: Global EMS with a medical business unit that provides design, manufacturing, and supply chain services for medical device OEMs. Comparable as a precision contract manufacturer serving medical OEMs with quality-system certifications.

Direct peers

• Benchmark Electronics: Mid-sized global EMS with a substantial medical/life-sciences focus, providing precision engineering, assembly, and test services for medical OEMs. Comparable to TOKO DS in serving medical device manufacturers with high-mix, low-to-medium volume production.
• Creation Technologies: North American-focused EMS with a dedicated medical business providing design support, precision assembly, and full box-build for medical device OEMs. Comparable to TOKO DS as a mid-sized, quality-certified medical contract manufacturer.
• Plexus Corporation: Mid-sized global EMS with a strong healthcare/life-sciences focus, providing precision assembly, microelectronics integration, and regulatory-quality manufacturing for medical OEMs. Directly comparable to TOKO DS in target customer base and precision manufacturing services.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/toko-ds_2

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about TOKO DS