What Sigmax does

Sigmax (Nippon Sigmax Co., Ltd.) is a privately held Japanese manufacturer founded in 1973 and headquartered in Tokyo, operating across four business segments: Medical, Sports, Wellness, and Global. The Medical segment supplies orthopedic supporters, splints, and medical devices—including the portable ultrasound diagnostic Pocket Echo miruco (Class II managed medical device), the LIAQUS Portable bone density measurement device, and the RECORE trunk training device developed jointly with Kanazawa University Hospital—to hospitals, clinics, and physicians via a dedicated field sales force. The Sports segment operates the ZAMST brand (established 1993), selling ankle, knee, and waist supporters, insoles, and cooling products through 2,068 sports retail stores nationwide and D2C e-commerce; ZAMST holds the #1 share in medical institution supporter shipments (2021-2024) and #1 in waist supporter shipment volume (2020-2024).

The company has proprietary underlying technology in compression support engineering, the patented 4C-Peltier cooling system used in worker cooling clothing (MEDIAID Icing Gear Best/Best 2), 3D foot scanning for custom insole production (MyFootcraft), and a self-designed manufacturing facility in Huzhou, China (operating since 2007) with ISO 13485 certification obtained in 2006. The Wellness segment under the MEDIAID brand (launched 2016) addresses daily care and worker safety markets with posture supporters, insoles, and cooling clothing, with named enterprise customers including Shimadzu Corporation, SBS Toshiba Logistics, Ishizaki Electric, and Tamura Manufacturing.

Sigmax generates revenue through hardware sales across all four segments, with a multi-channel go-to-market combining field sales to medical institutions, retail distribution through sports stores, own-brand e-commerce (showing 27.3% YoY D2C growth in FY2024), major Japanese online marketplaces, B2B enterprise sales for workplace safety, and international distribution partners across 36 countries. The company reports 14.37 billion JPY in revenue for FY ending March 2025 with 246 employees, and wholly owns three operating subsidiaries: SGT (overseas product import, 2019), CORETRIM (waist conditioning studios, 2024), and the Huzhou manufacturing entity (2007).

Name

Sigmax

Legal name

Nippon Sigmax Co., Ltd.

Website

https://sigmax.co.jp

Company type

Private

Founded year

1973

Operating status

Operating

Headcount range

251–500 employees

Short description

Sigmax is a Japanese manufacturer of orthopedic medical equipment, sports supporters under the ZAMST brand, and wellness/worker safety products under the MEDIAID brand, serving medical institutions, athletes, enterprises, and consumers across 36 countries with 14.37 billion JPY in annual revenue.

Ownership category

akta.pro rank

Product category

Orthopedic Medical Devices

NAICS

Medical Equipment and Supplies Manufacturing (3391), Surgical Appliance and Supplies Manufacturing (339113), Electromedical and Electrotherapeutic Apparatus Manufacturing (334510), Footwear Manufacturing (31621)

SIC

Orthopedic, Prosthetic & Surgical Appliances & Supplies (3842), Surgical & Medical Instruments & Apparatus (3841), Electromedical & Electrotherapeutic Apparatus (3845), Sporting & Athletic Goods, Nec (3949)

akta.pro primary industry

Specialty & Orthopedic Footwear Manufacturing (Medical/Diabetic/Custom) (IMAOAIAI)

akta.pro secondary industries

Athletic / Performance & Activewear Brands (CRAAAAAD), Comfort, Orthopedic & Medical Footwear (CRAAACAG)

Keywords

• Orthopedic medical devices
• Sports supporters
• Medical cooling apparel
• Worker safety equipment
• Wellness care products

Headquarters

HQ city

Tokyo

HQ country

Japan

HQ region

Asia

Offices4 records

Markets served

GTM type

B2B and B2C

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Medical Supporters and Devices: Sale of orthopedic medical supporters, splints, immobilization materials, and medical devices to healthcare institutions. Includes portable ultrasound diagnostic devices and bone density measurement equipment.
2. Sports Supporters and Products: Sale of ZAMST branded sports supporters (ankle, knee, waist), insoles, compression products, cooling gear, and sports accessories through retail and direct channels. ZAMST products available at 2,068 sports stores nationwide.
3. Wellness Consumer Products: MEDIAID branded consumer wellness products including posture supports, lifestyle care items, and worker safety products sold through e-commerce and retail.
4. Worker Safety Solutions: Enterprise-focused worker safety products including cooling vests, assist suits, and insoles for workplace ergonomic solutions. Sold to corporate clients for employee health and safety management.
5. Direct E-commerce: Direct-to-consumer sales through own brand online stores (MEDIAID online, ZAMST official online). D2C channel showing 27.3% year-over-year sales growth.

Pricing tiers

Go-to-market motion4 records

Distribution channels6 records

Marketing channels12 records

Core offering

Sigmax manufactures and sells orthopedic medical equipment and body-support products across four business segments: Medical (orthopedic supporters, portable ultrasound diagnostic devices such as Pocket Echo miruco, bone density measurement devices such as LIAQUS, and the RECORE trunk training device), Sports (ZAMST-branded ankle, knee, and waist supporters, insoles, cooling wear), Wellness (MEDIAID-branded posture care, worker safety gear, and Peltier-based cooling clothing such as Icing Gear Best 2), and Global (distribution of the same product portfolio to 36 countries). The company combines in-house manufacturing at its Huzhou, China factory with proprietary technologies such as the 4C-Peltier cooling system and 3D foot scanning, and sells through medical field sales, sports retail stores, B2B enterprise channels, and direct e-commerce.

Product overview

Sigmax operates as a body activity support company with four business segments: Medical, Sports, Wellness, and Global. The Medical business focuses on orthopedic healthcare products including supporters, ultrasound diagnostic devices (Pocket Echo miruco), bone density measurement devices (LAMQUS Portable), and trunk training devices (RECORE). The Sports business operates under the ZAMST brand offering ankle, knee, waist supporters, insoles (Footcraft series), cooling products (COOL SHADER, WIDE SUNSHADER), and compression wear. The Wellness business under MEDIAID brand provides daily care products (Style Care posture products), worker care solutions (Assist Gear, cooling clothing Icing Gear Best/Best2), and operates CoreTrim Station waist conditioning studios. The company also distributes Amoena breast care products and has developed proprietary icing technology (4C-Peltier System) for medical and workplace cooling applications.

Differentiator

Problem solved

Functional benefit

Brands

• ZAMST: Sports support and care brand offering ankle, knee, waist supports, insoles, compression wear, and heat management products for athletes.
• MEDIAID
• amoena
• miruco

Products and services

• ZAMST Brand Sports Supporters and Care Products

Quantifiable outcome

• Approximately 80% of employees felt improved comfort with MEDIAID Assist Insole
• +5 more outcomes

Named customers4 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Five partnerships are on record, tiered core and minor.

• コアトリム株式会社 (CORETRIM)coreStrategic or Co-development Partner · 1 January 2024Operates CORETRIM STATION，腰専門コンディショニングスタジオ. Provides exercise therapy for identifying and treating causes of waist pain. Established related company in 2024.
• 株式会社アールビー・エス (RBs)minorGTM or Marketing Partner · 1 January 2020Sponsor of virtual marathon event '1person,10days,100km RUN' during COVID-19 pandemic. Event attracted over 24,000 runners.
• 株式会社エスジーティー (SGT)coreChannel Partner/ Reseller/ Distributor · 1 January 2019SGT handles import and market introduction of overseas medical and wellness products to the Japanese market. Focuses on detecting changes in medical and healthcare environments and facilitating market entry and establishment of international products.
• アルケア株式会社 (Alcare)minorStrategic or Co-development PartnerJoint distribution partnership started December 2023. Combined logistics and distribution collaboration for supply chain optimization.
• 金沢大学附属病院整形外科 (Kanazawa University Hospital Orthopedics)coreStrategic or Co-development PartnerJoint development of RECORE trunk training device with Dr. Hitoshi Kato. Continued collaboration including medical research and development activities.

Scale indicators13 records

Recent moves14 records

Expansion highlights6 records

Broad incumbents

• Ossur: Icelandic global orthopedic leader in bracing, prosthetics, and supports. Broader portfolio than Sigmax (notably prosthetics) but directly competes in the orthopedic brace category and has significantly larger scale.
• DJO / Enovis: Global orthopedic and recovery solutions provider spanning braces, supports, and rehabilitation devices. Comparable to Sigmax across the medical/orthopedic supporter and rehabilitation device portfolio at substantially greater scale.

Emerging players

• Hologic: Global women's health and bone densitometry leader, including ultrasound and DXA bone-density systems. Comparable to Sigmax's LIAQUS portable ultrasound bone density device from a category-technology standpoint.

Direct peers

• Bauerfeind: German global leader in medical-grade orthopedic braces, supports, and compression stockings. Directly comparable to Sigmax on medical/support product positioning, channel access to clinicians, and sports-support brand authority.
• Thuasne: French orthopedic and medical compression manufacturer with a strong brace/support portfolio and physician distribution. Overlaps directly with Sigmax's medical supporter and worker-safety solutions.
• Medi (medi GmbH & Co. KG): German medical compression, orthopedic supports, and braces manufacturer. Closely comparable product mix to Sigmax's medical and wellness supporter lines, including physician-channel go-to-market.
• Alcare: Japanese manufacturer of medical elastomer products, wound care, and supportive devices. Most direct Japanese peer to Sigmax's medical-support business; the December 2023 joint distribution partnership makes it both a peer and a channel partner.
• Mueller Sports Medicine: US-based sports braces, supports, and athletic injury-prevention products. Directly competes with ZAMST in ankle/knee/waist bracing for athletes and recreational users across mass retail and D2C.
• McDavid: US-based sports protection and bracing brand with strong retail presence. Closely comparable to ZAMST's ankle/knee/waist product positioning and athletic retail go-to-market.

Regional players

• Furuno Electric: Japanese electronics manufacturer with a medical/industrial ultrasound division. Comparable to Sigmax's miruco portable ultrasound diagnostic device within the Japanese medical-device market.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xtwitter.com/sigmax_medical
• Facebookfacebook.com/zamst.jp
• LinkedInlinkedin.com/company/nippon-sigmax
• Instagraminstagram.com/zamst_global/?hl=ja

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Subsidiaries3 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 Sigmax