SMTL Medical Disposable Datacard

Neutral electrode (diathermy), high frequency surgical equipment, non-monitored

Other Names: Patient plate electrode.
All Wales Contract: ECG Electrodes, Diathermy plates, Defib pads
Sterility Status: Non Sterile.
Usage Status: Single use.


Also known as a 'single plate neutral electrode','dispersive electrode','diathermy or electrosurgery patient plate'. Thin, lightweight and flexible electrodewith single conductive layer, usually metallic foil, covered in a conductive adhesive. The electrode is usually foam backed and the adhesive layer protected by a peel-off sheet. Shapes vary; may be rectangular, square or oblong. A continuous adhesive border provides additonal adhesion to the patient. A conductive tab provides a means of connection to the high frequency (h.f.) surgery generator (diathermy machine). Alternatively, the electrode may be constructed with pre-attached leads.

Please note that the end connector (for the connection of the lead to the machine) must be compatible with the machine.


Key areas where used

  • Theatre - all surgical specialities

Method of use

The peel-off sheet is removed and the electrode positioned on the patient. The lead is connected to the h.f. surgery generator (diathermy machine) either directly, or the tab of the electrode is attached to the lead by a grabber clip. A neutral electrode of this design which is only partially attached to the patient will still allow a flow of h.f. current which will increase the risk of alternate site burns.

The MHRA recommend that only qualified theatre staff with appropriate training should apply this electrode.


  • Packaged in foil (often 5 per pack)

Sizes Required

  • Adult
  • Paediatric
  • Neonatal/Premature
  • A variety of shapes exist, ranging from square torectangular. The electrode area should be a minimum of 69 square centimeters and must meet the thermal requirements of sub-clause 50.104.5 of BS EN 60601-2-2

Relevant Standards

The following standards are relevant to this product;

Organisation Standard No. Title
BSI BS EN 60601-2-2 : 2007, sub-clause 59.104 Medical electrical equipment. Particular requirements for the safety of high frequency surgical equipment


Coding System Code Description
NSV FDK012/154/150/151 Electrode plate diathermy, adult standard.
NSV FDK153 Electrode plate diathermy, paediatric standard.

Example products

The following table lists examples of products known to be acceptable for this product description.

Brand Name Product Code Manufacturer
Standard patient plates - 1100 series 1149 3M
Neutralect Mini 2405M Uno Medical Ltd


Revision Details

Editor Pete Phillips
Revision No 1.14
Revision date 2008/11/19

Please inform SMTL of any inaccuracies noted or changes requiredin this datacard.


This datacard has been prepared as an aid to contracting forpurchasers in the NHS in Wales, and shouldnot be used as a substitute for literature, instructions or training from the manufacturersof the devices.

Products mentioned in this datacard are for illustration purposes onlyand should not be seen as an endorsement of these products.

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