What Rhythmlink International does

Rhythmlink International, LLC is a Columbia, South Carolina-based designer and manufacturer of disposable neurodiagnostic medical devices founded in 2002 by neurodiagnostic technicians and engineers. The company produces a comprehensive portfolio of single-use consumables for EEG, intraoperative neuromonitoring (IONM), and electromyography/nerve conduction (EMG/NCV) applications, including patented Guardian Needle safety subdermal needles, FDA-cleared MR Conditional electrodes compatible with 1.5T and 3T MRI environments, Sticky Pad surface electrodes, the BrainHealth headset for ICU/ER settings, disposable stimulating probes, concentric and monopolar needles, and accessories such as adapters, extension cables, and conductive pastes. The company's protected needle technology, imaging-compatible electrode line, and proprietary Quick Connect systems are protected by a portfolio of U.S. and international patents.

Rhythmlink generates revenue through two primary streams: direct sales of its medical device catalog to healthcare facilities and neurodiagnostic professionals via e-commerce, field sales, and a U.S. Department of Veterans Affairs federal contract, and contract manufacturing services spanning product design, prototyping, manufacturing, packaging, labeling, and quality assurance for medical device companies and innovators. Customer segments include neurodiagnostic professionals (EEG technologists, neurologists), IONM specialists, EMG/NCV practitioners, and medical device companies seeking custom development or private labeling, with end markets spanning hospitals, epilepsy monitoring units, ICUs, ERs, and operating rooms. Products ship to the U.S. and 30+ international markets including Canada, the EU, UK, Australia, Brazil, and Israel.

The company is privately held and currently backed by Graham Partners (invested March 2023), following a prior investment from New Heritage Capital in 2019 that funded the Chalgren Enterprises acquisition in December 2020. Rhythmlink holds ISO 13485, MDSAP, and EU MDR (MDD 93/42/EEC) certifications and maintains active trade show presence at ASET, ASNM, ACNS, AES, AANEM, Southern Sleep Society, and WHX Dubai. The company employs 51-100 people at its Columbia, SC headquarters and is led by CEO Paul Buckman (joined April 2024) with co-founder Shawn Regan serving as Chairman of the Board.

Name

Rhythmlink International

Legal name

Rhythmlink International, LLC

Website

https://rhythmlink.com

Company type

Private

Founded year

2002

Operating status

Operating

Headcount range

51–100 employees

Short description

Rhythmlink International designs, manufactures, and distributes disposable neurodiagnostic medical devices, including patented safety subdermal needles, MR Conditional EEG electrodes, and EMG/NCV consumables, serving hospitals, neurodiagnostic professionals, and the U.S. Department of Veterans Affairs globally, with additional contract manufacturing services for medical device companies.

Ownership category

akta.pro rank

Product category

Neurodiagnostic Medical Devices

NAICS

Electromedical and Electrotherapeutic Apparatus Manufacturing (334510), Medical Equipment and Supplies Manufacturing (3391)

SIC

Electromedical & Electrotherapeutic Apparatus (3845), Surgical & Medical Instruments & Apparatus (3841)

akta.pro primary industry

Connected Medical Devices & Wearables (Sensors, Patches, Implantables) (HLACAPAB)

Keywords

• Neurodiagnostic medical devices
• EEG electrodes
• Intraoperative neuromonitoring
• EMG NCV needles
• Medical device manufacturing

Headquarters

HQ city

Columbia

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Medical Device Sales: Rhythmlink designs, manufactures and distributes medical devices for neurodiagnostics including EEG electrodes, IONM needles, EMG needles, and related accessories. Products are sold as disposable consumables primarily to healthcare facilities and neurodiagnostic professionals.
2. Contract Manufacturing: Provides end-to-end contract manufacturing and custom medical device development services including product design, prototyping, manufacturing, packaging, labeling, and quality assurance for medical device companies, individual innovators, and healthcare companies.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels10 records

Core offering

Rhythmlink International designs, manufactures, and distributes disposable medical devices for neurodiagnostic applications including EEG, intraoperative neuromonitoring (IONM), and EMG/NCV procedures. The company's product portfolio spans protected subdermal needles, MR Conditional electrodes, surface electrodes, stimulating probes, and the BrainHealth headset. Rhythmlink also provides end-to-end contract manufacturing and custom medical device development services for medical device companies, innovators, and healthcare companies.

Product overview

Rhythmlink International is a designer and manufacturer of disposable neurodiagnostic medical devices serving EEG, Intraoperative Neuromonitoring (IONM), and EMG/NCV applications. The company operates as a unified product portfolio organized around three core diagnostic categories: Critical Care EEG (cEEG) monitoring, IONM, and EMG/NCV diagnostics. The flagship products include the Guardian Needle family (protected subdermal needles for needlestick safety), MR Conditional/CT Quick Connect Electrodes (FDA cleared for 1.5T and 3T MRI environments with CT compatibility), Sticky Pad surface electrodes, and various EEG cup electrodes. The company expanded into EMG through the 2020 acquisition of Chalgren Enterprises, adding concentric needles, monopolar needles, and adapters to the portfolio. Supporting products include stimulating probes, ET tube electrodes, evoked potential stimulators, extension cables, gels/pastes, and the BrainHealth headset for ICU/ER environments. Additionally, Rhythmlink offers contract manufacturing services for custom medical device development.

Differentiator

Problem solved

Functional benefit

Products and services

• Guardian Needle and Guardian+ Plus Needle Protected subdermal needles for intraoperative monitoring designed to reduce accidental needle sticks and minimize risk of exposure to cross contamination. Available in single or paired configurations and Standard Guardian or Guardian+ Plus variants.
• Fixed Distance Guardian Needle and Fixed Distance Guardian+ Plus Needle Newer variant of the Guardian Needle family featuring two 13mm subdermal needles set at a fixed distance of 2.5mm with an automatic snap-back safety casing, built on the same innovative safety technology.
• MR Conditional/CT Quick Connect Electrodes FDA Cleared MR Conditional electrodes for 1.5 and 3T MRI environments that provide artifact-free CT imaging while on the patient. Features Quick Connect system for quick disconnection and reconnection with numbered and colored labels. Available in Slim Cup, Deep Cup, Webb, and Combination styles.
• MR Conditional Sticky Pad Electrodes FDA Cleared MR Conditional surface electrodes with specially formulated hydrogel for optimum signal recordings. Available as Recording, Stimulating, and Ground variants in small and large sizes.
• MR Conditional/CT Individual Connectors MR Conditional/CT electrodes in individual connector configurations for customizable electrode setups. Includes PressOn, Slim Cup, Deep Cup, Webb, and Combination electrode types with various labeling options.
• Disposable EEG Electrodes Disposable EEG cup electrodes designed for quality recordings and reduced cross contamination. Available in Slim Cup, Deep Cup, Webb, Small Webb, and combo packs with improved CT leadwire for minimal artifact.
• CT Artifact Free Invisa-Electrodes Disposable artifact-free electrodes allowing continuous recording during CT scans without showing artifact or interfering with imaging. Available in Subdermal Needle, Slim Cup, Deep Cup, Webb, and PressOn versions.
• BrainHealth Headset EEG headset companion for ER, ICU and Critical Care environments. Includes pre-loaded PressOn EEG Electrodes with no skin prep required, designed for quick application and high quality EEG and cEEG recordings.
• Concentric Needles Disposable concentric needle electrodes for precision placement and high-quality recording in EMG studies. Available in four gauges (23, 26, 27, 30) with varying diameters and lengths, including a reusable cable option.
• Disposable Monopolar Needles Pre-sterilized disposable PTFE coated stainless steel monopolar needle electrodes for EMG. Includes 0.61 meter flexible PVC insulated leadwire with standard touch proof connector.
• Disposable Detachable Monopolar Needles Pre-sterilized detachable monopolar needle electrodes for EMG with PTFE coated stainless steel. Includes reusable 0.61 meter flexible leadwires with touch proof connector. Available in multiple lengths and diameters.
• Injectable Monopolar Needle Electrodes Pre-sterilized disposable injectable monopolar needle electrodes combining EMG with drug therapy injections. PTFE coated stainless steel with 0.61 meter super-flexible leadwire and touch proof connector.
• Disposable Sticky Pad Electrodes for EMG/NCV Pre-gelled disposable surface electrodes for EMG/NCV studies. Available in various sizes, leadwire lengths, colors, and styles (Disc, Tab, Rings, Bars, Ground Pads) with or without leadwire.
• Sticky Pad Surface Electrodes Full line of disposable surface electrodes pre-gelled and specially formulated for specific functions. Designed for IONM applications including stimulating, grounding, and recording.
• Contract Manufacturing Services End-to-end contract manufacturing and custom medical device development services spanning product design, prototyping, manufacturing, assembly, packaging, labeling, quality assurance, and regulatory support. Capabilities include 3D printing, custom electrodes, injection molding, PTFE coating, and wire harness manufacturing.

Quantifiable outcome

• Eliminates cost and need for staff to remove and reapply EEG electrodes during MR imaging
• +2 more outcomes

Named customers3 records

Segments4 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration1 record

Feature5 records

Partnerships

One partnership is on record.

• Chalgren EnterprisescoreStrategic or Co-development Partner · 15 December 2020Acquired December 2020. Well-established medical device manufacturer specializing in EMG and EEG products. Integration began March 1, 2021 with orders processed through Rhythmlink. Brought 50 years of customer relationships, world-class customer service reputation, and complementary product portfolio including monopolar needles and EMG accessories.

Scale indicators4 records

Recent moves6 records

Expansion highlights7 records

Market position

Competitive moat5 records

Key highlights7 records

Customer concentration

• Xx.com/rhythmlink

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Subsidiaries1 record

Funding overview

Funding rounds2 records

Investors2 records

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 Rhythmlink International