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Revenues (Tables) | 12 Months Ended
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Dec. 31, 2018
Revenue from Contract with Customer [Abstract] |
Schedule of Disaggregation of Revenue | The following table presents sales by operating segment disaggregated based on type of product and geographic region for the years ended December 31, 2018, 2017 and 2016.
| Year Ended December 31, 2018 |  | Year Ended December 31, 2017 |  | Year Ended December 31, 2016
| United States |  | International |  | Total |  | United States |  | International |  | Total |  | United States |  | International |  | Total
Cardiovascular |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stand-alone devices | $ | 202,129 |  |  | $ | 159,484 |  |  | $ | 361,613 |  |  | $ | 148,620 |  |  | $ | 126,836 |  |  | $ | 275,456 |  |  | $ | 105,250 |  |  | $ | 85,877 |  |  | $ | 191,127 |
Cianna Medical | 6,292 |  |  | — |  |  | 6,292 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Custom kits and procedure trays | 92,975 |  |  | 41,781 |  |  | 134,756 |  |  | 92,474 |  |  | 33,615 |  |  | 126,089 |  |  | 93,109 |  |  | 26,138 |  |  | 119,247 |
Inflation devices | 31,717 |  |  | 60,702 |  |  | 92,419 |  |  | 31,848 |  |  | 48,027 |  |  | 79,875 |  |  | 35,506 |  |  | 38,410 |  |  | 73,916 |
Catheters | 68,708 |  |  | 86,817 |  |  | 155,525 |  |  | 62,284 |  |  | 65,463 |  |  | 127,747 |  |  | 56,899 |  |  | 56,468 |  |  | 113,367 |
Embolization devices | 20,433 |  |  | 29,605 |  |  | 50,038 |  |  | 22,374 |  |  | 27,158 |  |  | 49,532 |  |  | 24,075 |  |  | 21,960 |  |  | 46,035 |
CRM/EP | 41,970 |  |  | 6,864 |  |  | 48,834 |  |  | 36,746 |  |  | 5,168 |  |  | 41,914 |  |  | 32,561 |  |  | 3,898 |  |  | 36,459 |
Total | 464,224 |  |  | 385,253 |  |  | 849,477 |  |  | 394,346 |  |  | 306,267 |  |  | 700,613 |  |  | 347,400 |  |  | 232,751 |  |  | 580,151 |
Endoscopy |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Endoscopy devices | 32,189 |  |  | 1,087 |  |  | 33,276 |  |  | 26,357 |  |  | 882 |  |  | 27,239 |  |  | 22,950 |  |  | 737 |  |  | 23,687 |
Total | $ | 496,413 |  |  | $ | 386,340 |  |  | $ | 882,753 |  |  | $ | 420,703 |  |  | $ | 307,149 |  |  | $ | 727,852 |  |  | $ | 370,350 |  |  | $ | 233,488 |  |  | $ | 603,838 |
Note: Certain revenue categories for 2017 and 2016 have been adjusted from prior disclosures to reflect changes in product classifications to be consistent with updates in management of our product portfolios during 2018. Also note that Cianna Medical is a new category in 2018 as a result of the acquisition in November 2018 (see Note 3).

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