Crownjun Kono Co., Ltd.

Name

Crownjun Kono Co., Ltd.

Legal name

Kono Seisakusho Co., Ltd.

Website

https://crownjun.com

Company type

Private

Operating status

Operating

Headcount range

11–50 employees

Short description

Crownjun Kono Co., Ltd. (operating as CROWNJUN, legal name Kono Seisakusho Co., Ltd.) is a privately held Japanese precision medical device manufacturer founded in 1970, specializing in 30μm fine-and-thin surgical sutures, needles, PTFE implants, and microsurgery instruments for cardiovascular, neurosurgical, reconstructive, and other specialty surgeons worldwide.

Ownership category

akta.pro rank

Product category

Surgical Medical Devices

NAICS

Surgical and Medical Instrument Manufacturing (339112), Surgical Appliance and Supplies Manufacturing (339113), Medical Equipment and Supplies Manufacturing (3391)

SIC

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

akta.pro primary industry

Open & Minimally Invasive Surgical Instruments (Handheld, Laparoscopic, MIS) (HLAHADAA)

akta.pro secondary industries

Surgical Stapling, Suturing & Hemostasis (Staplers, Clips, Sealants, Tourniquets) (HLAHADAL), Neurosurgical Implants & Cranial/CMF (Cranial Plates, Dural Repair, Shunts) (HLAHAEAD)

Keywords

• Surgical sutures
• Microsurgery instruments
• Cardiovascular surgical devices
• Precision medical needles
• PTFE surgical implants

Headquarters

HQ city

Ichikawa-shi

HQ country

Japan

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Medical Device Sales: Manufacture and sale of medical equipment including surgical sutures, needles, implants, and microsurgery instruments to hospitals, surgical centers, and medical professionals worldwide.

Go-to-market motion2 records

Distribution channels2 records

Marketing channels4 records

Core offering

Crownjun Kono Co., Ltd. manufactures and sells precision medical devices for surgical use, specializing in fine and thin microsurgery instruments, surgical sutures (absorbable and non-absorbable), surgical needles, PTFE implants, felt products, and ligating devices. The product portfolio targets surgical specialties including cardiovascular surgery, pediatric cardiovascular surgery, neurosurgery, reconstructive surgery, orthopedics, urogynecology, ophthalmology, and aesthetic plastic surgery. Core proprietary product lines include ASFLEX (PVDF suture), PICOCLAMP, Cirrax, LEVEL FREE, FortaPyknó, ACRI, and LACLON, sold under the CROWNJUN brand.

Product overview

Crownjun Kono Co., Ltd. is a manufacturer of precision medical equipment specializing in microsurgical instruments and sutures for various surgical applications. The product portfolio includes a comprehensive range of surgical sutures (absorbable and non-absorbable), microsurgery products, PTFE implants, felt products for cardiovascular procedures, and ligating devices. The offerings are organized across multiple surgical specialties including cardiovascular surgery, neurosurgery, reconstructive surgery, orthopedics, pediatric cardiovascular surgery, urogynecology, ophthalmology, as well as aesthetic plastic surgery and veterinary surgery. Key products include ASFLEX (PVDF suture), PICOCLAMP (microsurgery clamp), Cirrax (PTFE implant), LEVEL FREE (non-absorbable suture), FortaPyknó (PTFE knit), ACRI (micro needle), and various felt products like Feltina Series and KnitPatch. The company positions itself as a technology development venture with a focus on fine and thin technology (pioneering 30μm precision).

Differentiator

Problem solved

Functional benefit

Brands

• ASFLEX: PVDF suture product for cardiovascular and pediatric cardiovascular surgery; the first PVDF suture in Japan.
• LACLON
• PICOCLAMP
• ACRI
• Cirrax
• VSORB
• LEVEL FREE
• TEFDESSERⅡ
• Octacus
• Feltina Series
• KnitPatch
• FortaPyknó
• Kashimé

Products and services

• ASFLEX The first PVDF (polyvinylidene fluoride) suture in Japan, offering almost no in vivo degradation with long-term inertness. Provides smooth penetration minimizing tissue damage, with needles specifically manufactured for vascular surgery and pediatric cardiovascular applications.
• PICOCLAMP Microsurgery product designed for delicate surgical procedures requiring precision clamping and manipulation in vascular anastomosis and reconstructive microsurgery.
• Cirrax PTFE (polytetrafluoroethylene) implant product used in neurosurgical procedures, providing a biocompatible material for surgical reconstruction.
• LEVEL FREE Non-absorbable suture designed for cardiovascular surgery and neurosurgery applications.
• FortaPyknó Highly biocompatible Polytetrafluoroethylene (PTFE) knitted product for pediatric cardiovascular surgery using advanced technology, providing strength and pliability with minimal needle hole bleeding.
• ACRI Next Generation Needle Series designed for micro-surgical procedures with enhanced precision.
• LACLON Absorbable suture specifically designed for reconstructive surgery procedures.
• MICROSURGERY SUTURE Microsurgery suture product for precision surgical procedures.
• TEFDESSERⅡ Cardiovascular suturing device for surgical procedures.
• Octacus Cardiovascular surgery product designed for surgical reinforcement.
• Feltina Series Felt product series for cardiovascular surgery applications, used for suturing reinforcement.
• KnitPatch Band product for surgical applications in cardiovascular procedures.
• Kashimé Ligating device for neurosurgery procedures.
• VSORB Neurosurgery product designed for surgical applications.
• Crownjun Online Store Direct-to-customer e-commerce storefront launched in October 2024, selling medical equipment and surgical products globally under the CROWNJUN brand.

Named customers2 records

Segments1 record

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Scale indicators1 record

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Ethicon (Johnson & Johnson): Ethicon is the global market leader in surgical sutures and wound closure devices, offering a comprehensive suture portfolio that directly overlaps with Crownjun's ASFLEX, LACLON, and LEVEL FREE product lines. While Ethicon serves a much broader customer base with commodity products, it competes with Crownjun in specialty cardiovascular and microsurgery sutures, making it a broad incumbent reference point.
• B. Braun Surgical: B. Braun Surgical is a major European-based surgical sutures and instruments manufacturer with global reach, directly competing with Crownjun across multiple specialty suture lines. Its Aesculap division serves many of the same surgical specialties (cardiovascular, neurosurgery, microsurgery) with a broader product portfolio and established distribution.
• Teleflex (Surgical Solutions): Teleflex's surgical solutions division offers sutures, ligation devices, and specialty surgical instruments that overlap with Crownjun's cardiovascular and microsurgery portfolios. The Kashimé ligating device and TEFDESSER II cardiovascular products are conceptually adjacent to Teleflex's Weck and Pilling lines, serving similar surgical customers.

Emerging players

• CorMatrix Cardiovascular: CorMatrix develops and markets ECM-based and other biomaterial implants for cardiac and vascular surgery, overlapping with Crownjun's PTFE-based FortaPyknó and Cirrax implants. Both companies target cardiovascular and pericardial repair niches with biocompatible materials, making CorMatrix a specialty emerging competitor in the same procedural indications.
• Adliance Suture: Adliance Suture is a Polish specialty suture manufacturer with a focus on cardiovascular and surgical sutures, with similar mid-sized niche positioning to Crownjun. Both companies compete in European cardiovascular suture markets with specialty PVDF and PTFE-based products.
• Centenial Surgical Suture: Centenial Surgical Suture is an Indian-based manufacturer of surgical sutures with cardiovascular and specialty offerings, comparable to Crownjun in being a regional mid-sized specialty suture manufacturer. Both serve emerging global markets with cardiovascular and general surgical sutures, making them similar in scale and product positioning.
• BioVascular Inc. BioVascular develops specialized surgical biomaterials and cardiovascular products, conceptually adjacent to Crownjun's PTFE and cardiovascular implant lines. Both target cardiovascular surgery with specialty biocompatible materials, although BioVascular focuses more on biologic adjuncts and coatings.

Direct peers

• Assut Europe: Assut Europe is an Italian manufacturer of surgical sutures including cardiovascular and microsurgery specialty lines, with comparable mid-sized, niche positioning to Crownjun. Both companies target European and global surgical markets with specialty cardiovascular and plastic surgery sutures, providing similar technology and customer profiles.
• W.L. Gore & Associates (Gore Medical): Gore Medical is the dominant supplier of expanded PTFE grafts and implants for cardiovascular and reconstructive surgery, making it the most direct competitor to Crownjun's Cirrax and FortaPyknó PTFE products. Both companies specialize in biocompatible PTFE materials for surgical applications, serving overlapping surgeon customers in vascular and cardiovascular surgery.
• Peters Surgical: Peters Surgical is a French specialty manufacturer focused on cardiovascular sutures, surgical adhesives, and microsurgery products, with comparable niche positioning to Crownjun. Both companies serve cardiac, vascular, and microsurgery markets with specialized sutures and reinforcement products, making Peters a closely comparable mid-sized European peer.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/CROWNJUN
• LinkedInlinkedin.com/company/crownjunkono
• Instagraminstagram.com/crownjun_kono

Revenue estimate

Valuation estimate

Number of profiles

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 Crownjun Kono Co., Ltd.