Nocturnal

What Nocturnal does

Nocturnal Product Development, LLC is a privately held medical device engineering services firm headquartered in Durham, North Carolina, founded in 2011 by KC Armstrong. The company specializes in taking early-stage medical device startups from concept through first-in-human studies, with a particular focus on Class II and Class III implantable and wearable devices including cardiac monitors, neuromodulation systems, defibrillators, and biosignal-based wearables. Its technical capabilities span ultra-low power hardware and embedded software design, biosensor integration and biosignal acquisition, cloud-connected device and companion app development, and AI-ready data architecture. The firm holds ISO 13485:2016 certification at its Durham development labs and supports regulatory submissions across FDA (510(k), De Novo, PMA) and EU MDR pathways.

The company generates revenue through professional services engagements sold via direct, consultative enterprise sales to medical device startup founders. Its pricing model is a milestone-based fixed-cost structure that replaces hourly billing, with multi-year contracts tied to predefined deliverables and shared risk between Nocturnal and its clients. Target customers are early-stage medical device companies with limited runway that need predictable development costs, regulatory expertise, and specialized engineering in power-constrained, safety-critical form factors. Named customers include Impulse Dynamics, Future Cardia, Relief Cardiovascular, Perfusio, NXT Biomedical, and NeuroTronik, with three clients reaching active implants in humans as of 2025.

Nocturnal is led by founder and president KC Armstrong (MSEE, 14 US patents), VP of R&D Cinnamon Larson (PhD), and VP of Business Development Eyal Dayan. In July 2024 the firm entered a strategic co-development partnership with Linxens to integrate medical-grade biosensors and skin-patch manufacturing into its offering. The company is founder-owned, has no disclosed outside capital, and operates as an independent design services firm rather than a venture-backed product company.

Name

Nocturnal

Legal name

Nocturnal Product Development, LLC

Website

https://nocturnalpd.com

Company type

Private

Founded year

2011

Operating status

Operating

Headcount range

11–50 employees

Short description

Nocturnal Product Development is a Durham, NC-based ISO 13485-certified medical device engineering services firm that helps early-stage startups develop Class II and Class III implantable and wearable devices from concept through clinical use via milestone-based fixed-cost contracts.

Ownership category

akta.pro rank

Headquarters

HQ city

Durham

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Medical Device Development Services: Nocturnal provides comprehensive medical device design and development services to startups, including device architecture, hardware design, firmware development, regulatory submission support, and design-to-manufacturing services. Revenue is generated through milestone-based fixed-cost pricing where clearly defined deliverables are agreed upon upfront with fixed costs.

Pricing tiers

Go-to-market motion2 records

Distribution channels1 record

Marketing channels4 records

Core offering

Nocturnal is a medical device development services firm that helps early-stage companies bring Class II and Class III implantable and wearable medical devices from concept through manufacturing. The company delivers full-service device design — including ultra-low power hardware, embedded software, biosignal acquisition, regulatory submission support (FDA and MDR), and low-volume manufacturing — under a milestone-based, fixed-cost pricing model.

Product overview

Nocturnal is a medical device development services company offering a comprehensive suite of design-to-manufacturing services for startups developing Class II and Class III medical devices. The company's core offering is its medical device development services, which span from concept through manufacturing with specialized expertise in implantable and wearable devices. Key service modules include Active Implantables Development, Wearable Medical Devices, Cardiac Monitoring & Therapy, Neuromodulation, Ultra-Low Power Software & Hardware, Biosensors & Biosignal Acquisition, and Embedded Software. These technical services are supported by regulatory offerings (FDA & MDR Submission Support), manufacturing capabilities (Low-Volume Manufacturing), and data solutions (Cloud-Connected Devices & Apps, AI-Ready Data). The company distinguishes itself through a Milestone-Based Pricing Model that provides fixed-cost, result-based pricing. Through a partnership with Linxens, Nocturnal can leverage pre-validated medical-grade biosensors and electronic skin patches to accelerate client device development.

Differentiator

Problem solved

Functional benefit

Products and services

• Medical Device Development Services Full-service medical device design and development for startups, covering concept through manufacturing, with expertise in Class II and Class III implantable and wearable devices. The offering spans device architecture, hardware design, firmware development, regulatory submission support, and design-to-manufacturing services delivered under milestone-based fixed-cost pricing.
• FDA & MDR Submission Support Standalone regulatory submission service supporting FDA pathways (510(k), De Novo, PMA) and EU MDR pathways for medical device approval, including compliance with FDA Quality System Regulation (21 CFR 820) and design controls (21 CFR 820.30).
• Low-Volume Manufacturing Manufacturing support for low-volume builds and pilot production for early-stage medical devices, with seamless transfer to contract manufacturers. Delivered from Nocturnal's ISO 13485:2016 certified development labs in Durham, NC.

Quantifiable outcome

• Three clients achieved active implants in humans in 2025
• +1 more outcomes

Named customers5 records

Segments2 records

Ideal customer profiles1 record

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

One partnership is on record.

• LinxenscoreStrategic or Co-development Partner · 8 July 2024Linxens, a global expert in electronic components with over 40 years of experience, partners with Nocturnal to offer complete integrated solutions from concept design to final packaging for medical devices. The partnership combines Linxens' medical-grade biosensors, skin electronic adhesion technologies, and ISO 13485 certified manufacturing in Sweden with Nocturnal's ultra-low power hardware and software expertise. This partnership accelerates time to market for biosensor-based wearables and implantables.

Scale indicators4 records

Recent moves5 records

Expansion highlights6 records

Direct peers

• StarFish Medical: Canadian medical device design, development, and contract manufacturing firm serving startups through commercialization. Highly comparable to Nocturnal in target customer (early-stage medtech), service scope (Class II/III design-to-manufacturing), and consulting-led delivery model.
• Veranex: Global medtech services platform offering end-to-end design, engineering, regulatory, clinical, and market-access services. Directly comparable in end-to-end device development for medical device companies, though at meaningfully larger scale than Nocturnal.
• NAMSA: Medical device-focused contract research organization providing testing, regulatory, and development services to manufacturers. Comparable in serving Class II/III device companies through regulatory pathways, with adjacent rather than identical design scope.
• Mindtribe: Engineering consultancy specializing in medical device, IoT, and connected hardware product development for startups and growth-stage companies. Closely comparable in target customer, embedded systems expertise, and milestone-driven project model.
• Bresslergroup: Product development firm with a strong medical device practice spanning industrial design, human factors, mechanical, electrical, and software engineering. Comparable in early-to-mid-stage medtech design services for emerging device companies.
• Sunrise Labs: Medical device engineering services firm specializing in Class II/III device development, embedded systems, and regulated software. Highly comparable in service mix, regulated expertise, and focus on medical device innovators.
• Simbex: Medical device design, development, and commercialization firm with expertise in wearables, biosensors, and connected health devices. Comparable in wearable/biosensor development focus and engagement with startup and established medtech clients.

Broad incumbents

• Cambridge Consultants: Large product development consultancy with deep medical device engineering capabilities across imaging, surgical, and connected devices. Comparable in technical depth and Class III expertise, but operates as a broad incumbent serving multiple industries alongside medtech.
• Phillips-Medisize (Molex): Large medical device CDMO offering design, development, and manufacturing services across the medtech value chain. Comparable in design-to-manufacturing capabilities, but at a far broader scale and as part of the Molex ecosystem.
• Integer Holdings: Medical device outsourcing firm providing design, development, and manufacturing services for cardiovascular, neuromodulation, and other Class III devices. Comparable in implantable device expertise, but operates as a broad incumbent across multiple device categories.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/nocturnal-product-development

Compliance2 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 Nocturnal