BS EN ISO 20570:2018,Dentistry – Oral surgical scalpel handle.You can download BS EN ISO 20570:2018 pdf file here.
BS EN ISO 20570:2018 specifies requirements and their test methods for multiple use of oral surgical scalpel handles used in conjunction with detachable blades for oral surgical procedures such as cutting and/or removal of soft oral tissues.
BS EN ISO 20570:2018 also specifies the requirements for marking and labelling of oral surgical scalpel handles.
5.2 Dimensions
5.2.1 Maximum overall length
The maximum overall length of the instrument shall be 178 mm.
5. 2. 2 Dimensions of fitting feature
dimensions of fitting feature of the scalpel handle shall be in accordance with the IS0 7740: 1985, 2.1 when tested according to 5. 1.
5.2.3 Dimensions of the shank
The length of the shank for Type 1 straight scalpel handle shall be in accordance with IS0 7240: 1985 2.1 when tested according to 6.1.
The length of the shank for Type 2 angled scalpel handle shall be greater than 4, 50 mm when tested according to 6.l.
The length of the shank for Type 3 reverse angled scalpel handle shall be greater than 22, 31 cosB.
5.3 Materials
The materials of the scalpel handles shall be in accordance with ISO 7153-1.
5.4 Surface finish
The surfaces of the instruments shall be free of visible surface defects when tested according to 6.2.

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