Net revenues Other revenues (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 26, 2021	Sep. 27, 2020	Sep. 26, 2021	Sep. 27, 2020
Revenue, Major Customer [Line Items]
Net revenues	$ 700,251	$ 628,301	$ 2,047,649	$ 1,825,977
Vascular access
Revenue, Major Customer [Line Items]
Net revenues	175,476	160,052	507,188	475,252
Anesthesia
Revenue, Major Customer [Line Items]
Net revenues	97,074	75,647	277,357	216,204
Interventional
Revenue, Major Customer [Line Items]
Net revenues	104,304	93,187	312,559	275,704
Surgical
Revenue, Major Customer [Line Items]
Net revenues	92,831	82,223	271,402	224,928
Interventional urology
Revenue, Major Customer [Line Items]
Net revenues	83,107	81,773	248,714	196,114
OEM
Revenue, Major Customer [Line Items]
Net revenues	64,083	49,399	178,528	168,618
Other
Revenue, Major Customer [Line Items]
Net revenues	$ 83,376	$ 86,020	$ 251,901	$ 269,157