Net revenues - Other revenues (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 27, 2022	Mar. 28, 2021
Revenue, Major Customer [Line Items]
Net revenues	$ 641,715	$ 633,925
Vascular access
Revenue, Major Customer [Line Items]
Net revenues	166,134	163,973
Anesthesia
Revenue, Major Customer [Line Items]
Net revenues	86,957	84,857
Interventional
Revenue, Major Customer [Line Items]
Net revenues	96,859	96,173
Surgical
Revenue, Major Customer [Line Items]
Net revenues	89,702	80,386
Interventional urology
Revenue, Major Customer [Line Items]
Net revenues	74,895	73,364
OEM
Revenue, Major Customer [Line Items]
Net revenues	57,656	53,489
Other
Revenue, Major Customer [Line Items]
Net revenues	$ 69,512	$ 81,683