


IEC 60601-1 Figure 33 Body Upper-Carriage Module
The IEC 60601-1 Figure 33 Body Upper-Carriage Module is used to simulate upper-body loading during dynamic loading tests on ME equipment parts that support or suspend a patient or operator. It supports IEC 60601-1 Clause 9.8.3.3 related mechanical safety evaluation for medical beds, examination tables, treatment chairs and similar patient support equipment.
- Applicable Standard: IEC 60601-1 Figure 33 / Clause 9.8.3.3.
- Test Object: ME equipment parts supporting or suspending a patient or operator.
- Test Purpose: Dynamic loading evaluation of patient or operator support areas.
- Typical Application: Medical beds, examination tables, treatment chairs and patient support platforms.
- Module Type: Body upper-carriage module with foam contact structure.
- Loading Requirement: Used with suitable mass according to the safe working load of the equipment under test.
- Configuration Notes: Reservoir, loading mass, fixture or complete test setup should be confirmed before quotation.
Product Overview
The IEC 60601-1 Figure 33 Body Upper-Carriage Module is a standard-related test module used to reproduce upper-body loading during dynamic loading tests. It is mainly applied to medical electrical equipment structures that may be loaded by a patient or operator during sitting, standing, patient handling or similar normal-use conditions.
Unlike a simple rigid weight block, this module provides a defined body-shaped loading interface related to IEC 60601-1 Figure 33. It is suitable for laboratories that already have a test frame or lifting arrangement, as well as customers who need KingPo to support the selection of a more complete dynamic loading test setup.
Applicable Standard and Test Purpose
This module is used for IEC 60601-1 Figure 33 related dynamic loading tests under Clause 9.8.3.3. It helps simulate upper-body loading on ME equipment parts that support or suspend a patient or operator. Before testing, the applicable standard edition, safe working load, loading mass, support position and required test setup should be confirmed.
KingPo can provide module configuration support according to the customer’s sample type and laboratory test requirements.
Technical Features
| Feature | Description | Customer Value |
|---|---|---|
| IEC 60601-1 Figure 33 Related Design | Designed for the body upper-carriage test concept related to IEC 60601-1 Figure 33. | Helps laboratories select the correct standard-related module instead of using a general foam pad or ordinary weight block. |
| Foam Contact Structure | The foam structure helps simulate the upper-body contact interface during dynamic loading. | Provides a more representative loading contact for patient or operator support surface testing. |
| Dynamic Loading Test Support | Can be used as part of the IEC 60601-1 Clause 9.8.3.3 dynamic loading test setup. | Suitable for evaluating support structures exposed to sitting, standing, patient handling or impact-like loading actions. |
| Loading Configuration to Be Confirmed | Reservoir, loading mass, support fixture and lifting method should be confirmed before quotation. | Helps avoid confusion between a module-only purchase and a complete loading arrangement. |
| Laboratory Setup Compatibility | Can be matched with an existing laboratory fixture or discussed as part of a complete test solution. | Supports different laboratory workflows and project requirements. |
Testing Principle

The test principle is based on simulating a dynamic person-loading event on the support or suspension part of the ME equipment. The body upper-carriage module is used together with the required mass according to the safe working load defined for the equipment under test.
For applicable sitting-area conditions, the loaded module may be dropped from a defined height, such as 150 mm from the lowest edge of the foam to the support area, according to the relevant IEC 60601-1 test requirement. After the test, the equipment is checked to confirm whether basic safety and essential performance are maintained.
Typical Test Objects
Medical Beds
Medical beds often include patient support platforms, adjustable sections and loading areas that may be exposed to dynamic forces during normal use. The Figure 33 body upper-carriage module can be used as part of the mechanical loading evaluation for these support areas.
Examination Tables and Treatment Tables
Examination tables and treatment tables may experience impact-like loading when a patient sits down, lies down or changes position. This module helps laboratories apply a standard-related upper-body loading interface during IEC 60601-1 evaluation.
Treatment Chairs and Patient Chairs
Treatment chairs, dialysis chairs, dental chairs and similar patient seating equipment may require dynamic person-loading assessment. The module helps simulate upper-body loading on seating or support surfaces.
ME Equipment with Patient or Operator Support Parts
Some ME equipment includes platforms, suspension supports, sitting surfaces or structures intended to support an operator during normal use. If dynamic loading from a person can occur, the Figure 33 related test may be applicable.
Difference from Related Products
Body Upper-Carriage Module
This page focuses on the IEC 60601-1 Figure 33 Body Upper-Carriage Module itself. It is suitable when the customer already has a test frame, lifting arrangement or loading system and needs the standard-related loading module.
Body Upper-Carriage Module With Reservoir
If the customer requires a reservoir or integrated mass-loading arrangement, the reservoir version should be confirmed separately. The quotation should clearly state whether the reservoir is included.
Complete Medical Bed Load and Impact Test System
If the customer needs automatic or semi-automatic loading, repeated impact testing, adjustable fixtures or a complete medical bed mechanical safety test platform, a complete system may be more suitable than purchasing the module alone.
Typical Laboratory Use Cases
Certification laboratories use this module for IEC 60601-1 mechanical loading evaluation of medical electrical equipment.
Medical bed manufacturers use it for development verification and pre-compliance testing of patient support areas.
Treatment chair manufacturers use it to evaluate seating and support structures exposed to person-loading during normal use.
Medical device R&D and quality teams use it to check whether structural changes may affect IEC 60601-1 mechanical safety compliance.
Standards Compliance Notes
This product is intended to support testing according to IEC 60601-1 Figure 33 and the related dynamic loading requirement of Clause 9.8.3.3.
The final compliance result depends on the tested ME equipment, safe working load, test setup, loading mass, test position, test procedure and post-test evaluation. The test module itself should not be described as independently certified equipment unless a specific certification document is provided.
Download IEC 60601-1 Figure 33 Body Upper-Carriage Module Catalog
Download the KINGPO IEC 60601-1 Figure 33 Body Upper-Carriage Module catalog to review the dynamic loading test application, product structure, configuration notes and typical medical equipment support testing information.
Technical Inquiry and Configuration Support
KingPo supplies the IEC 60601-1 Figure 33 Body Upper-Carriage Module for dynamic loading tests on medical electrical equipment parts that support or suspend a patient or operator. Our engineering team can help review whether the module configuration matches your IEC 60601-1 Clause 9.8.3.3 test requirement, safe working load definition and laboratory test setup.
Please Provide the Following Information:
- Applicable standard: IEC 60601-1 Figure 33 / Clause 9.8.3.3 or your internal test procedure
- Test object: Medical bed, examination table, treatment chair, patient support platform or other ME equipment structure
- Support area: Sitting area, lying surface, suspension support, adjustable section or other patient/operator support position
- Safe working load: Rated safe working load and required loading mass for the equipment under test
- Required configuration: Module only, module with reservoir, loading mass, fixture or complete loading arrangement
- Documentation requirement: Calibration certificate, inspection report, user manual or dimensional confirmation if required
Based on this information, KingPo can provide configuration suggestions, documentation support and quotation for your IEC 60601-1 Figure 33 Body Upper-Carriage Module project.
IEC 60601-1 Figure 33 Body Upper-Carriage Module
IEC 60601-1 Figure 33 Body Upper-Carriage Module FAQs
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