English to Spanish Medical Medical: Instruments otorrinoscopio

en un texto que habla sobre un otorhinoscope aparece lo siguente


Otorhinoscope:
• Speculum
• Magnifying Lens
• 10 Speculum replacements
Parts Description

Speculum Slider
Head Assembly
Power Handle
Speculum

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Removing the Head Assembly:
To Remove - Carefully hold the Head Assembly and rotate the Power Handle Anti-clockwise to release.
To Assemble - Align the lugs on the Power Handle with the slots on the underside of the Head Assembly. Push upwards and rotate clockwise to fit securely. See fig.8.
Note: The Head Assembly is replaceable, if it becomes worn or damaged please contact the manufacturer or supplier for

no sé cómo poner head assembly, espero que puedan ayudarme es muy urgente gracias