Overview

ISO 27186:2020 - Active implantable medical devices - Four-pole connector system for implantable cardiac rhythm management devices - Dimensional and test requirements - defines the dimensional and test requirements for a four-pole connector system used with implantable cardiac rhythm management (CRM) devices. The standard covers both the lead connector (the connector portion of an implantable lead) and the mating connector cavity in an implantable pulse generator, specifying essential dimensions, performance requirements and applicable test methods.

Key scope points:

Applies to four-pole connectors for pacing, electrogram sensing and/or defibrillation functions.
Establishes two connector types: high-voltage and low-voltage only (with dimensional lockout to prevent unsafe contact).
Does not replace unipolar/bipolar standards (e.g., ISO 11318, ISO 5841-3).
Not applicable to systems >1 000 V and/or >50 A or to devices with unique sensors/electrodes outside conventional pacing/sensing/defibrillation.
Manufacturers retain responsibility for safety, biocompatibility and overall system reliability.

Key topics and technical requirements

ISO 27186:2020 addresses practical connector engineering and testing, including:

Dimensional requirements for lead connectors and connector cavities to ensure interchangeability.
Materials and contact materials guidance for biocompatibility and corrosion resistance.
Electrical requirements: electrical isolation, dielectric strength, current-carrying tests (with annexed test methods).
Mechanical performance: insertion force, retention force, withdrawal force, tensile loads, deformation under contact loads.
Seal zone requirements to maintain hermetic separation and prevent fluid ingress.
Contact resistance and stability tests and fatigue assessments to verify long-term electrical connection integrity.
Normative and informative annexes provide test procedures and rationale (e.g., electrical isolation, dielectric strength, high-voltage current-carrying tests, contact material requirements, fatigue and seal-zone behavior).

Practical applications - who uses this standard

ISO 27186 is primarily used by:

Medical device manufacturers (leads and pulse generators) designing four‑pole CRM connectors for interoperability.
Design and R&D engineers specifying connector geometry, materials, and contact mechanisms.
Quality assurance and test laboratories performing dimensional checks and standardized electrical/mechanical tests.
Regulatory and compliance teams preparing technical documentation and demonstrating conformity with recognized connector requirements.
Component suppliers of contacts, seals and connector hardware targeting CRM device markets.

Related standards

ISO 11318 (unipolar connectors)
ISO 5841-3 (bipolar connectors)
Referenced materials and test standards (ASTM, ISO normative references) are cited within ISO 27186.

ISO 27186:2020 helps ensure connector interchangeability, defined testability and documented performance for four‑pole CRM connectors - a key component for safe, reliable implantable cardiac systems.

Overview

Key scope points:

Applies to four-pole connectors for pacing, electrogram sensing and/or defibrillation functions.
Establishes two connector types: high-voltage and low-voltage only (with dimensional lockout to prevent unsafe contact).
Does not replace unipolar/bipolar standards (e.g., ISO 11318, ISO 5841-3).
Not applicable to systems >1 000 V and/or >50 A or to devices with unique sensors/electrodes outside conventional pacing/sensing/defibrillation.
Manufacturers retain responsibility for safety, biocompatibility and overall system reliability.

Key topics and technical requirements

ISO 27186:2020 addresses practical connector engineering and testing, including:

Dimensional requirements for lead connectors and connector cavities to ensure interchangeability.
Materials and contact materials guidance for biocompatibility and corrosion resistance.
Electrical requirements: electrical isolation, dielectric strength, current-carrying tests (with annexed test methods).
Mechanical performance: insertion force, retention force, withdrawal force, tensile loads, deformation under contact loads.
Seal zone requirements to maintain hermetic separation and prevent fluid ingress.
Contact resistance and stability tests and fatigue assessments to verify long-term electrical connection integrity.
Normative and informative annexes provide test procedures and rationale (e.g., electrical isolation, dielectric strength, high-voltage current-carrying tests, contact material requirements, fatigue and seal-zone behavior).

Practical applications - who uses this standard

ISO 27186 is primarily used by:

Medical device manufacturers (leads and pulse generators) designing four‑pole CRM connectors for interoperability.
Design and R&D engineers specifying connector geometry, materials, and contact mechanisms.
Quality assurance and test laboratories performing dimensional checks and standardized electrical/mechanical tests.
Regulatory and compliance teams preparing technical documentation and demonstrating conformity with recognized connector requirements.
Component suppliers of contacts, seals and connector hardware targeting CRM device markets.

Related standards

ISO 11318 (unipolar connectors)
ISO 5841-3 (bipolar connectors)
Referenced materials and test standards (ASTM, ISO normative references) are cited within ISO 27186.

ISO 27186:2020 PDF

Technical details

Abstract

Overview

Key topics and technical requirements

Practical applications - who uses this standard

Related standards

Related standards

Abstract

Overview

Key topics and technical requirements

Practical applications - who uses this standard

Related standards

Related standards

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