4-Pin Push-Pull to PH2.0 Medical Cable for Device-Level Integration

This 4-pin medical cable assembly is designed to create a reliable connection path between an external medical device interface and the internal electronics of the equipment. The metal LEMO-compatible female connector provides the device-side connection, while the PH2.0 4-pin terminal provides a compact interface for connection to an internal PCB, controller board, or secondary wire harness.

This connector architecture is particularly useful when medical equipment requires a robust external mating interface while maintaining a simple and space-efficient connection inside the enclosure. Instead of routing the external connector directly to the PCB, the cable assembly acts as an intermediate medical interconnect that can be designed around the mechanical and electrical architecture of the finished device.

From External Device Connector to Internal PCB Connection

In a typical equipment design, the metal connector can be integrated into the device housing or panel as the external connection point. The cable then routes the required electrical connections inside the equipment, with the PH2.0 terminal connecting to the PCB or an internal wiring assembly.

This structure separates the external mating interface from the internal electronics and gives engineers greater flexibility when arranging the PCB, enclosure, cable routing, and serviceable components. It can be considered for compatible EEG systems, ECG equipment, EMG devices, physiological signal acquisition hardware, diagnostic instruments, and other medical electronics requiring a compact internal connector.

Final compatibility should always be confirmed according to the connector series, keying structure, mounting dimensions, pin assignment, and electrical definition of the target device.

Designed Around the Actual Medical Device Interface

A 4-pin connector does not automatically define how the four contacts should be wired. For OEM and ODM medical equipment projects, the connector orientation, pin numbering, signal definition, wire sequence, PH2.0 terminal position, and internal cable routing should be reviewed together before production.

Heymed Medical can work from PCB drawings, connector specifications, pinout diagrams, CAD information, existing cable samples, or device interface photos. Our engineering team can review the interface relationship and develop the cable assembly according to the actual equipment architecture rather than simply supplying a fixed standard cable.

Depending on the project, the cable structure can also be developed as part of a larger medical device wire harness or custom medical cable assembly , allowing multiple connectors, internal branches, PCB terminals, cable lengths, and mechanical structures to be integrated into one device-level solution.

Key Engineering Considerations

External interface: connector series, mating structure, panel installation and orientation.

Electrical definition: pin-to-pin mapping, signal assignment and wire sequence according to the target device.

Internal connection: PH2.0 terminal configuration, PCB position and internal cable routing.

Mechanical integration: cable length, strain-relief structure, wire breakout and available space inside the equipment enclosure.

Pinout Verification and Production Support

For custom medical cable assemblies, correct connector appearance alone is not sufficient. The relationship between every connector contact and the corresponding PH2.0 terminal position must match the customer's device definition.

During sample development, pin-to-pin mapping and electrical continuity can be verified according to the approved wiring definition. This helps identify connection errors before the cable progresses into volume manufacturing and is especially important for projects using customized signal assignments.

Heymed Medical supports the development process from interface review and sample preparation through cable assembly, inspection, and volume production, providing medical device manufacturers with a more controlled path from prototype connection design to production-ready cable assemblies.

Related Medical Interconnect Solutions

Different medical devices require different connector architectures. In addition to metal push-pull interfaces, Heymed Medical develops cable assemblies using magnetic Pogo Pin, electrode snap, Type-C, and other device-side connection structures.

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