Philips RFI BOARD V2 ASSY Medical Patient Monitor Circuit Board Manufactured by Philips Brand for Medical Monitoring Applications

Philips RFI BOARD V2 ASSY Medical Patient Monitor Circuit Board Manufactured by Philips Brand for Medical Monitoring Applications

Original Manufacturer/Brand: Hewlett-Packard (HP) and Agilent Technologies

Current Brand: Philips

Primary Application Field: Medical devices, specifically patient monitors (e.g., HP M1720A, M1176A modules).

Function: Electromagnetic Compatibility (EMC) shielding and filtering board assembly.

Current Ownership: Related products and spare parts support are now under Philips Healthcare.

1. Core Functions and Design Purpose

Core Role: Radio Frequency Interference (RFI) Suppression

Key Tasks:

Shielding External Interference: Prevents high-frequency devices (e.g., electrosurgical units, wireless equipment) in operating rooms/ICUs from interfering with monitor signals.

Suppressing Internal Noise: Blocks electromagnetic noise leakage from the device’s switching power supply, ensuring compliance with the IEC 60601-1-2 medical EMC standard.

Design Positioning: Acts as an "electromagnetic firewall" at the device’s power input terminal.

2. Typical Physical and Electrical Characteristics (HP/Agilent Monitors as Examples)

3. Typical Application Device Models

This board is commonly found in the following classic medical devices:

HP Patient Monitors:

HP M1205A (main unit)

M1176A/M1136A (blood pressure module)

M1722A/M1723A (SpO₂ module)

Agilent/Philips Monitoring Systems:

CMS Series (e.g., CMS 2000)

Power modules in early models of the IntelliVue MP Series.

⚠️ Note: Variants may exist across devices (e.g., RFI BOARD V3 ASSY). Match precisely using OEM part numbers (e.g., PHILIPS 989803138521).

4. Failure Symptoms and Maintenance Criticality

Typical Failure Symptoms:

Device fails to power on (power input filtering failure).

High-frequency noise in monitoring data (e.g., ECG waveform glitches, SpO₂ value fluctuations).

Device fails EMC testing (re-certification required after repair).

Maintenance Warning:
Never replace with non-medical power boards! Medical EMC requirements are stringent; uncertified components may cause regulatory non-compliance risks.

5. Spare Parts Sourcing and Replacement Recommendations

Official Channels:

Philips Healthcare official spare parts system (current owner).

Authorized service providers (e.g., TRIMEDX, GE Healthcare third-party services).

Replacement Solutions:

Use OEM-refurbished parts (labeled Refurbished by Philips).

STRICTLY PROHIBITED to use non-medical-grade imitation boards—may endanger patient safety and violate FDA/CE regulations.

Summary

Identity: Core safety component for EMC compliance in medical monitoring devices.

Ownership: Originally designed by HP/Agilent; currently supported by Philips.

Usage Advice: Must use OEM parts for repairs and perform EMC verification tests.