maintaining an operating table...operating table: functions dr. chris r. mol, bme, nortec, 2015...

Maintaining an operating table

Module 279 18 B Medical Instrumentation I

13.6.2 Maintaining a operating table

o Principles of operation function use scientific principles

o construction components system diagram inputs/outputs

o troubleshooting identifying common faults replacing components rectifying faults

o safety considerations user and patient safety electrical safety

dr. Chris R. Mol, BME, NORTEC, 2015

Unit B 13.6 Maintaining theatre and surgery equipment

Operating table: Functions

dr. Chris R. Mol, BME, NORTEC, 2015 Maintaining an operating table

Basic functions that every operating table must fulfil. • the height of an operating table must be adjustable. This

is the only way a surgeon can adapt it to his/her height and thus work ergonomically.

• it must be possible to tilt the table to the lef and to the right to ensure a better overview into body cavities or to use gravity to move organs.

• the individual operating table segments must also be adjustable. This is the only way to ensure the necessary anatomical bends of the body and enable extremities to be positioned suitable for operating.

• A further property of the operating table top is radiolucency (‘look through’ for X-rays). The radiolucent surface should be as large as possible to ensure the largest possible image without disruption.

• Table rails are used to fix/attach supporting equipment• The padding (cushions) of the table must be both sof and radiolucent. Sof because it must distribute the

pressure of the patient body optimally, otherwise the patient may suffer pressure ulcers.

Operating table: Components


Operating table: Construction


Segment and Tilting movements are • Hand operated or • Electric Motor driven

Up and Down movement is ofen hydraulic: achieved by pumping a pedal, as with a car jack and dental

chair

Operating table: Preventive maintenance


e.g. Monthly maintenance• Clean and lubricate pins and latches, spring loaded pins and pivoting ports

with light machine oil or Vaseline• Check castors that roll smoothly and floor lock is functioning correctly • Test table functions by adjusting them to extreme position and back• Check hand control unit and foot switch cables, connector and receptacle

As usual, there is maintenance to be done according to user and service manual • afer each operation: disinfection, drying (user)• daily: cleaning, inspection, function checks (user), • weekly: (oil) fluid levels, greasing (user) • monthly: see below (BioMed tech) • annual (BioMed tech) maintenance.

And training to be given by BioMed techs to Users….

Operating table: Common Faults


Table movement failure

Check the main panel buttons for damage, the circuit board and wiring connections Unplug the hand controller plug, use a multi-meter to measure if connection is turned on. Contact the manufacturer to purchase PCB’s and do the replacement.

Sometimes the up-down control fails due to a jack problem. In this case, oil should be added. If there is no problem with the oil level, then the oil seal or piston may have the problem.

Operating table: Trouble shooting


Operating table: Safety considerations


• Observe maximum allowed weight of the operating table• Position the patient properly, as this affects the stability of the table

• Patients center of gravity should be over the base of the table• Take extreme care when moving the table with patient on and make sure it

is at minimum height.

• Avoid contact with any metal surfaces as they can cause burns during electro surgery (table side bars): both for patients and for users

ENDThe creation of this presentation was supported by a grant from THET:

see https://www.thet.org/

https://www.thet.org/

maintaining an operating table...operating table: functions dr. chris r. mol, bme, nortec, 2015...

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