Senko Medical Instrument Manufacturing Co., Ltd.

What Senko Medical Instrument Manufacturing Co., Ltd. does

Senko Medical Instrument Manufacturing Co., Ltd., operating under the brand MERA (泉工医科工業株式会社), is a privately held Japanese medical device manufacturer founded in 1940 by Aoki Risaburo and incorporated in 1950. The company designs, manufactures, and distributes a broad portfolio of hospital-grade medical devices and consumables, with historic leadership in artificial organs and cardiopulmonary support — including Japan's first artificial heart-lung machine (1953), first artificial kidney (1954), first artificial heart valve SAM (1965), and the world's first silicone hollow fiber membrane artificial lung (1984). Core product categories span artificial heart-lung systems, auxiliary circulation devices (IABP), cardiovascular and endovascular devices, artificial joints, electrosurgical equipment, operating room instruments, anesthesia, tracheostomy, oxygen therapy, and home healthcare products. Its proprietary centrifugal blood pump system UNIMO has received multiple Japanese SME innovation awards.

The company operates a nationwide Japanese distribution network of 21 direct sales branches and approximately 700 partner agencies, supported by manufacturing at its Kasukabe (Saitama) facility — including an R&D center opened in 2006 and expanded in 2017 — and overseas production via MERA SENKO CORPORATION in Cebu, Philippines (established 1996). Its quality management system is ISO 13485:2016 certified by BSI Group Japan. Revenue model is direct enterprise sales to hospitals and medical institutions through the field sales force, plus channel sales through partner agencies and specialty stores; pricing is not publicly disclosed.

In May 2025, Senko entered a distribution partnership with iRhythm Technologies to bring the AI-powered Zio long-term continuous ECG monitoring system to Japan — its most significant recent strategic move, opening a new AI-enabled revenue line in Japan's 1.6 million annual ambulatory cardiac monitoring test market. The company has also launched a steady cadence of new products in 2025-2026 (closed suction catheter, pediatric tracheostomy, cricothyroid kit, cuff monitor, temperature-controlled transport box) and was selected under Japan's FY2025 Next-Generation Medical Device Development Promotion Project. The company remains under fourth-generation family leadership of President Masato Aoki (since 2017), with no identified external institutional investors or public listing.

Name

Senko Medical Instrument Manufacturing Co., Ltd.

Legal name

泉工医科工業株式会社 (Senko Medical Instrument Manufacturing Co., Ltd.)

Website

https://mera.co.jp

Company type

Private

Founded year

1940

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Senko Medical Instrument Manufacturing (MERA) is a privately held Japanese medical device company founded in 1940, manufacturing cardiopulmonary bypass systems, IABP devices, electrosurgical equipment, artificial joints, airway management devices, and home healthcare products, sold to Japanese hospitals via 21 sales branches and 700+ partner agencies.

Ownership category

akta.pro rank

Product category

Medical Devices

NAICS

Surgical and Medical Instrument Manufacturing (339112), Surgical Appliance and Supplies Manufacturing (339113), Electromedical and Electrotherapeutic Apparatus Manufacturing (334510)

SIC

Surgical & Medical Instruments & Apparatus (3841), Orthopedic, Prosthetic & Surgical Appliances & Supplies (3842)

akta.pro primary industry

Surgical & Procedural Instruments (Scalpels, Forceps, Retractors) (HLAMAFAA)

akta.pro secondary industry

Diagnostic & Laboratory Packaging (Specimen Containers, Transport Tubes) (IMALAIAF)

Keywords

• Cardiopulmonary bypass systems
• Cardiovascular medical devices
• Auxiliary circulation devices
• Electrosurgical equipment
• Tracheostomy airway devices

Headquarters

HQ city

Tokyo

HQ country

Japan

HQ region

Asia

Offices14 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Distribution channels4 records

Marketing channels4 records

Core offering

Senko Medical Instrument Manufacturing Co., Ltd. (brand: MERA) is a Japanese medical device manufacturer that designs, develops, produces, and sells a comprehensive range of hospital-grade equipment including artificial heart-lung systems, auxiliary circulation devices (IABP, centrifugal blood pumps), cardiovascular and endovascular therapy devices, artificial joints, bone fixation materials, electrosurgical equipment, operating room instruments, anesthesia products, tracheostomy and oxygen therapy devices, and home healthcare products. The company also distributes iRhythm Technologies' AI-powered Zio long-term cardiac monitoring system in Japan and operates three manufacturing factories supported by an in-house R&D center.

Product overview

MERA泉工医科工業 is a comprehensive medical device manufacturer offering a broad portfolio of hospital-grade equipment and consumables. The product lineup centers on critical care and surgical equipment including artificial heart-lung (cardiopulmonary bypass) systems, auxiliary circulation (IABP) devices, and cardiovascular endovascular devices. Additional core categories span orthopedic products (artificial joints, bone fixation materials), electrosurgical equipment, operating room instruments, and tracheostomy/airway management products including the Sofit series. The company also manufactures general surgical supplies such as drainage catheters, anesthesia products, oxygen therapy equipment, suction systems, and steel surgical instruments. In the consumer/home healthcare segment, they offer home care products. Notably, MERA distributes the iRhythm Zio ECG long-term continuous monitoring system with PMDA-approved AI algorithm in Japan. The portfolio includes specialized products like the UNIMO centrifugal blood pump system (award-winning) and the TEXY ONE PLUS Peltier temperature-controlled transport box. The company operates 21 sales offices nationwide with 3 owned factories, maintaining ISO 13485:2016 certified quality management systems.

Differentiator

Problem solved

Functional benefit

Products and services

• Artificial Heart-Lung Systems (人工心肺) Cardiopulmonary bypass machines that temporarily take over heart and lung function during cardiac surgery; sold to cardiac surgery departments at hospitals.
• Auxiliary Circulation Devices (補助循環) Mechanical circulatory support devices including intra-aortic balloon pumps (IABP) and related equipment that assist heart function; sold to hospitals performing cardiovascular interventions.
• UNIMO Centrifugal Blood Pump System (UNIMO メラ遠心血液ポンプシステム) Advanced centrifugal blood pump system for extracorporeal circulation support during cardiac surgery; awarded the 30th SME Excellent New Technology/New Products Award.
• Cardiovascular and Endovascular Therapy Devices (カーディオバスキュラー 血管内治療デバイス) Vascular treatment devices for cardiovascular interventions including stents and endovascular products; sold to cardiovascular surgery and interventional cardiology departments.
• Artificial Joints (人工関節) Prosthetic joint replacement implants for orthopedic surgery; sold to hospital orthopedic departments.
• Bone Fixation Materials and Others (骨接合材・その他) Bone fixation materials and related orthopedic surgical products; sold to hospital orthopedic and trauma surgery departments.
• Electric Scalpels and Counter Electrode Products (電気メス対極板関連製品) Electrosurgical units and patient return electrodes for surgical cutting and coagulation; sold to hospital operating rooms.
• Operating Room Equipment (手術室関連器具) Surgical instruments and equipment for operating room procedures; sold to hospital operating rooms.
• Steel Surgical Instruments (鋼製小物) Surgical steel instruments and small surgical tools; sold to hospital operating rooms and surgical departments.
• Drainage Catheters (ドレーンカテーテル) Catheters for surgical drainage of fluids from body cavities; sold to surgical and intensive care departments.
• Anesthesia Related Products (麻酔関連製品) Products for anesthesia administration and management during surgery; sold to hospital anesthesiology departments.
• Tracheotomy Related Products (気管切開関連製品) Tracheostomy tubes and related airway management products including the Sofit series; sold to anesthesiology, ICU, and pediatric care departments.
• Oxygen Therapy Products (酸素投与製品) Oxygen delivery devices for respiratory therapy and supplemental oxygen treatment; sold to hospitals for inpatient and home oxygen therapy use.
• Low Pressure Sustained Suction Devices (サクションシステム) Continuous low-pressure suction systems for wound drainage and fluid removal; sold to surgical and intensive care departments.
• Hemonetics Related Products (ヘモネティクス関連製品) Blood processing and hemotherapy related medical devices; sold to hospitals and transfusion medicine departments.
• Home Healthcare Products (在宅介護福祉関連製品) Medical devices and equipment designed for home-based patient care and welfare, including the cold-sensation belt for patient comfort; distributed via 700+ partner agencies for home healthcare use.
• Zio ECG Recording and Analysis System (Zio 貼付型長時間心臓モニタリングシステム) PMDA-approved AI-powered deep-learned ECG algorithm providing up to 14 days of uninterrupted cardiac monitoring (compared to 24–48 hours for traditional Holter monitors); distributed in Japan by Senko Medical Instrument.
• TEXY ONE PLUS Peltier Temperature-Controlled Transport Box (ペルチェ式 定温搬送BOX) Peltier-based temperature-controlled transport box for maintaining constant temperature during medical specimen or pharmaceutical logistics; sold to hospitals, laboratories, and pharmaceutical logistics providers.
• S-Cure Closed Suction Catheter (S-Cure エスキュア 閉鎖式吸引カテーテル) Closed suction catheter system for medical suction during surgical and intensive care procedures; sold to anesthesiology, ICU, and respiratory care departments.
• Myca Cuff Monitoring Device (マイカフ) Cuff monitoring device for tracheostomy care; sold to hospitals and clinical staff managing patients with tracheostomy tubes.
• Cricothyroid Membrane Incision Kit (ファストラ / Fastra) Cricothyroid membrane incision kit for emergency airway procedures; sold to emergency medicine, anesthesiology, and critical care departments.
• Sasae Cold-Sensation Belt (ささえ 冷感ベルト) Cold-sensation belt for patient comfort during clinical and home healthcare use; sold to hospitals and home healthcare providers.

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

One partnership is on record.

• iRhythm TechnologiesmajorChannel Partner/ Reseller/ Distributor · 1 May 2025Senko Medical Instrument is distributing iRhythm Technologies' AI-powered Zio ECG Recording and Analysis System in Japan. The system provides up to 14 days of continuous ECG monitoring compared to 24-48 hours capability of traditional Holter monitors. The system uses a PMDA-approved deep-learned AI algorithm. Nationwide availability was anticipated by July 2025. Japan is the second-largest ambulatory cardiac monitoring market globally with approximately 1.6 million tests prescribed annually.

Scale indicators6 records

Recent moves11 records

Expansion highlights5 records

Broad incumbents

• Stryker Corporation: Global leader in orthopedics and surgical equipment. Directly comparable in Senko's artificial joint, bone fixation, and OR instrument categories, though Stryker operates at multi-billion scale globally.
• Abbott Laboratories: Global medical device and diagnostics leader with cardiovascular, structural heart, and diagnostic businesses that intersect Senko's product lines. Operates at scale and geographic reach far beyond Senko.
• Medtronic plc: World's largest medical device company with a cardiac and vascular portfolio that overlaps Senko's cardiopulmonary bypass, IABP, and endovascular categories. A primary global benchmark for Senko's critical-care business.
• Edwards Lifesciences: Global leader in heart valves and hemodynamic monitoring. Direct overlap with Senko's artificial heart valve SAM heritage and current cardiovascular endovascular therapy device line, but at vastly larger scale.

Others

• iRhythm Technologies: US-based developer of the Zio AI-powered long-term continuous ECG patch that Senko distributes in Japan. Not a competitor but a strategic partner whose IP and commercial decisions materially shape Senko's cardiac monitoring trajectory.

Direct peers

• Terumo Corporation: Japan-headquartered global medical device company with strong overlap in cardiovascular, surgical, and hospital products. Larger and more international but the most relevant Japanese peer in cardiac and surgical device categories.
• JMS Co., Ltd. Japanese medical device manufacturer producing infusion, dialysis, surgical, and cardiovascular consumables. Similar size band and domestic distribution focus, with overlapping hospital customer base.
• Nipro Corporation: Japanese medical device manufacturer with a similarly broad portfolio spanning artificial organs (dialyzers), cardiovascular, surgical, and hospital products. Closest Japanese comparable by product breadth and domestic mid-cap profile.
• Fukuda Denshi Co., Ltd. Japanese manufacturer specializing in ECG, cardiac monitoring, and cardiology information systems. Closest domestic peer in the cardiac monitoring space where Senko now distributes Zio, and a potential substitute for hospital ECG budgets.
• Asahi Kasei Medical: Japanese medical division of Asahi Kasei producing artificial kidneys (dialyzers), plasma fractionation, and bioprocess equipment. Direct overlap with Senko's historical artificial organ R&D and current hospital customer base.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries1 record

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 Senko Medical Instrument Manufacturing Co., Ltd.