Patient Positioning Couch for Radiotherapy

Product Specifications

Technical details and manufacturing context for Patient Positioning Couch

Definition

The Patient Positioning Couch is a critical component of the Integrated Radiotherapy Treatment Planning and Delivery System, designed to accurately position and immobilize patients for both imaging (CT simulation) and treatment delivery. It ensures precise alignment between the patient's anatomy and the radiation beam, enabling accurate targeting of tumors while minimizing exposure to surrounding healthy tissues. The couch typically integrates with imaging systems and treatment machines, maintaining consistent positioning throughout the radiotherapy workflow. Constructed from materials such as carbon fiber composite, aluminum alloy, and stainless steel, the couch offers a radiolucent tabletop for imaging and treatment while providing stable support. Key parameters include a table length of 2000–2400 mm, width of 500–600 mm, and a maximum patient weight of 200–300 kg. Vertical travel ranges from 500–800 mm, longitudinal travel from 1000–1500 mm, and lateral travel from 200–300 mm. Positioning accuracy is ±0.5–±1.0 mm, with repeatability of ±0.2–±0.5 mm, referencing IEC 60601-2-68. Maximum vertical speed is 10–20 mm/s. Power supply is 100–240 V AC per IEC 60601-1, operating temperature is 10–40 °C, and ingress protection is IP54–IP65 per IEC 60529. The tabletop is carbon fiber, and net weight is 300–500 kg. These values are directory reference ranges; verify model-specific specifications with the legal manufacturer or supplier.

Working Principle

The couch operates through a combination of mechanical, electrical, and sometimes hydraulic systems to provide multi-directional movement (vertical, longitudinal, lateral, and rotational). It uses precision motors, encoders, and control systems to achieve sub-millimeter positioning accuracy. The couch surface is designed to be radiolucent (transparent to radiation) for imaging and treatment, while providing stable support and patient comfort. Movement is controlled via a user interface that allows precise adjustments, and the couch integrates with imaging and treatment systems to maintain alignment throughout the workflow.

Common Materials

Carbon fiber composite, Aluminum alloy, Stainless steel

Technical Parameters

Parameter	Typical range	Notes & selection driver
Table Length	2000–2400 mm	Must accommodate patient height and imaging systems.
Table Width	500–600 mm	Width affects patient comfort and accessory mounting.
Maximum Patient Weight	200–300 kg	Must exceed heaviest patient plus immobilization devices.
Vertical Travel Range	500–800 mm	Range must align with treatment isocenter height.
Longitudinal Travel Range	1000–1500 mm	Enables full body scanning and treatment.
Lateral Travel Range	200–300 mm	Needed for off-axis positioning.
Positioning Accuracy	±0.5–±1.0 mm	Critical for precise dose delivery.IEC 60601-2-68
Repeatability	±0.2–±0.5 mm	Ensures consistent setup across fractions.
Maximum Speed (Vertical)	10–20 mm/s	Safety limit to prevent patient discomfort.
Power Supply	100–240 V AC	Universal input for global markets.IEC 60601-1
Operating Temperature	10–40 °C	Outside range may affect electronics and mechanics.IEC 60601-1
Ingress Protection Rating	IP54–IP65	Protects against dust and water splashes.IEC 60529
Tabletop Material	Carbon fiber	Low attenuation for imaging and treatment beams.
Net Weight	300–500 kg	Affects floor loading and installation.

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
Provides the patient support surface, designed to be radiolucent for imaging and treatment

Material: Carbon fiber composite
Base Frame Part
Provides structural support and houses the movement mechanisms

Material: Steel
Vertical Column Part
Enables vertical movement of the couch top through hydraulic or electromechanical systems

Material: Aluminum alloy
Longitudinal Drive System
Provides precise movement along the length of the couch using motors and linear guides

Material: Stainless steel
Control Panel
Interface for operators to control couch movements and positions

Material: Plastic composite
Position Encoders
Provide feedback on couch position for precise control and reproducibility

Material: Electronic components
Lateral Drive System
Moves the couch top left-right, one of the four axes the plan positions on.

Manufacturers of Patient Positioning Couch

Manufacturer profiles associated with Patient Positioning Couch.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review · Page last updated 6 September 2026

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Frequently Asked Questions

What is the primary function of the Patient Positioning Couch?

The couch accurately positions and immobilizes patients during radiotherapy imaging and treatment, ensuring precise alignment between the patient's anatomy and the radiation beam to target tumors while sparing healthy tissue.

What materials are used in the couch construction?

The couch is typically made from carbon fiber composite for the tabletop, with aluminum alloy and stainless steel for structural components, providing radiolucency and stability.

What are the key positioning specifications?

The couch offers vertical travel of 500–800 mm, longitudinal travel of 1000–1500 mm, and lateral travel of 200–300 mm, with positioning accuracy of ±0.5–±1.0 mm and repeatability of ±0.2–±0.5 mm.

How should I verify the couch meets my requirements?

Check the model-specific datasheet from the legal manufacturer or supplier for exact values, and confirm compliance with relevant standards such as IEC 60601-2-68 for positioning accuracy and IEC 60601-1 for electrical safety.

Data Basis

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

Preliminary Technical Classification

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pressure:	N/A (mechanical positioning system)
other spec:	Load capacity: 200-300 kg, Positioning accuracy: ±1 mm, Vertical travel: 30-50 cm, Lateral travel: 20-40 cm
temperature:	15-30°C (operating environment)

Patient Positioning Couch

Product Specifications

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Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards