Editorial Technical Reference

Treatment Couch

This page explains how Treatment Couch is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A precision patient positioning platform for radiation therapy that supports and immobilizes patients during treatment with a medical linear accelerator.

Representative product image. Confirm appearance and specifications with the manufacturer.

Product Specifications

Technical details and manufacturing context for Treatment Couch

Definition
The treatment couch is a critical component of a medical linear accelerator system designed to precisely position and support patients during radiation therapy. It provides a stable, adjustable platform that allows for accurate alignment of the patient's treatment area with the radiation beam, ensuring targeted delivery while minimizing exposure to healthy tissues. The couch typically features motorized movements in multiple axes (vertical, longitudinal, lateral, and rotational) with sub-millimeter precision, integrated imaging compatibility, and patient immobilization accessories.

Constructed from materials such as carbon fiber composite, aluminum alloy, stainless steel, and medical-grade plastics, the couch balances rigidity with low radiation attenuation. Its table top, often made of carbon fiber, offers high stiffness while minimizing beam interference. The drive system uses electric servo motors to achieve smooth and precise motion, with positioning accuracy of ±0.5 mm and repeatability of ±0.2 mm, as per reference ranges. The couch accommodates a maximum patient weight of 200–250 kg and provides vertical travel of 500–800 mm, longitudinal travel of ±400–±600 mm, and lateral travel of ±200–±300 mm. Table length ranges from 2000–2400 mm and width from 500–600 mm.

Operational parameters include a power supply of 100–240 V AC, power consumption of 500–1000 W, and an operating temperature range of 10–40°C. The ingress protection rating is IP54, guarding against dust and water splashes. Relevant standards for verification include IEC 60601-2-68 for positioning accuracy, IEC 60601-1 for electrical safety, and IEC 60529 for ingress protection. These standards serve as procurement references; actual compliance must be confirmed with the legal manufacturer or supplier for the specific model. The couch integrates with the linear accelerator's control system, allowing automated positioning based on pre-planned coordinates. Its design supports imaging compatibility and patient immobilization accessories, ensuring consistent setup across treatment fractions. For any application, verify model-specific values and standards with the manufacturer.
Working Principle
The treatment couch operates through a combination of mechanical, electrical, and control systems. Motorized actuators (typically servo or stepper motors) drive precision lead screws or linear guides to move the couch top in multiple directions. A computerized control system interfaces with the linear accelerator's treatment planning software, allowing for automated positioning based on pre-planned coordinates. Load cells and position encoders provide feedback for precise movement control and patient weight monitoring. The couch structure is designed to minimize radiation attenuation while maintaining rigidity and stability.
Common Materials
Carbon fiber composite, Aluminum alloy, Stainless steel, Medical-grade plastics
Technical Parameters
ParameterTypical rangeNotes & selection driver
Table Length2000–2400 mmMust accommodate patient height and treatment range.
Table Width500–600 mmWidth affects patient comfort and accessory mounting.
Vertical Travel500–800 mmRange from lowest to highest position.
Longitudinal Travel±400–±600 mmRange of movement along the patient axis.
Lateral Travel±200–±300 mmRange of movement perpendicular to patient axis.
Positioning Accuracy±0.5 mmCritical for precise radiation delivery.IEC 60601-2-68
Repeatability±0.2 mmEnsures consistent setup across fractions.
Maximum Patient Weight200–250 kgMust support bariatric patients safely.
Table Top MaterialCarbon fiberLow attenuation and high stiffness.
Drive SystemElectric servoProvides smooth and precise motion.
Power Supply100–240 V ACWide input range for global use.IEC 60601-1
Power Consumption500–1000 WIncludes motors and control electronics.
Operating Temperature10–40 °CTypical clinical environment range.IEC 60601-1
Ingress ProtectionIP54Protection against dust and water splashes.IEC 60529

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Couch Top Part
    Primary patient support surface designed for comfort, stability, and minimal radiation attenuation
    Material: Carbon fiber composite with foam padding
  • Base Frame Part
    Structural foundation that supports the entire couch assembly and provides mounting points for movement mechanisms
    Material: Steel or aluminum alloy
  • Vertical Column
    Central support structure that enables vertical movement of the couch top
    Material: Steel with precision linear guides
  • Longitudinal Drive System
    Motorized mechanism for moving the couch top along the head-to-foot axis
    Material: Aluminum housing with steel lead screws
  • Lateral Drive System
    Motorized mechanism for moving the couch top along the left-to-right axis
    Material: Aluminum housing with steel lead screws
  • Control Panel
    Interface for manual positioning controls and status indicators
    Material: Medical-grade plastics with membrane switches
  • Position Encoders
    Precision sensors that provide real-time feedback on couch position for closed-loop control
    Material: Electronic components in protective housing
  • Load Cells
    Measure patient weight and give the drives their load feedback.

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Max patient weight: 250 kg (distributed load), Max point load: 50 kg
other spec: Positioning accuracy: ±1 mm, Max deflection under load: 2 mm, Motion speed: 1-10 mm/s, Power requirements: 100-240V AC, 50/60Hz
temperature: 15-30°C (operating environment), patient contact surface: 20-25°C
Media Compatibility
✓ Human patients (various body types) ✓ Medical positioning accessories (foam cushions, thermoplastic masks) ✓ Sterile medical drapes/covers
Unsuitable: High-moisture environments without protective covers, corrosive chemical exposure, areas with strong magnetic fields (MRI adjacent)
Sizing Data Required
  • Patient maximum weight and dimensions
  • Required treatment positioning accuracy and reproducibility
  • Integration requirements with linear accelerator model and room dimensions

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Hydraulic system leakage
Cause: Seal degradation due to repeated actuation cycles and chemical exposure to hydraulic fluids
Motor/actuator failure
Cause: Overheating from continuous use without adequate cooling or electrical overload from power surges
Maintenance Indicators
  • Unusual grinding or whining noises during height adjustment
  • Visible hydraulic fluid leaks or pooling under the couch
Engineering Tips
  • Implement a preventive maintenance schedule for hydraulic seals and fluid replacement based on usage cycles
  • Install surge protection devices and ensure proper ventilation around motor components to prevent overheating

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
IEC 60601-1:2005+AMD1:2012+AMD2:2020 - Medical electrical equipment - Part 1: General requirements for basic safety and essential performance EN 60601-2-52:2010 - Medical electrical equipment - Part 2-52: Particular requirements for the basic safety and essential performance of medical beds

Quoted from the published standard.

Manufacturing Precision
  • Height adjustment range: +/- 5 mm
  • Load capacity: +/- 2% of rated capacity
Quality Inspection
  • Load testing - Verification of structural integrity under maximum rated load
  • Electrical safety testing - Insulation resistance and leakage current measurements

Manufacturers of Treatment Couch

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Frequently Asked Questions

What is the positioning accuracy of the treatment couch?

According to the reference data, the positioning accuracy is ±0.5 mm, as per IEC 60601-2-68. However, this is a directory reference range; you must verify the exact accuracy for the specific model with the legal manufacturer or supplier.

What materials are used in the construction of the treatment couch?

The treatment couch is typically made from carbon fiber composite, aluminum alloy, stainless steel, and medical-grade plastics. The table top is often carbon fiber to minimize radiation attenuation while providing high stiffness. Confirm material specifications with the manufacturer.

What is the maximum patient weight the couch can support?

The reference range for maximum patient weight is 200–250 kg. This is a general range; the actual limit depends on the specific model and must be confirmed with the manufacturer or supplier.

Which standards apply to the treatment couch?

Relevant standards include IEC 60601-2-68 for positioning accuracy, IEC 60601-1 for electrical safety, and IEC 60529 for ingress protection (IP54). These are procurement references; compliance must be verified with the legal manufacturer for the specific model.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
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