US 12,458,776 B2
Catheters with bevelled drainage holes
Christian Carlsson, Floda (SE)
Assigned to Dentsply IH AB, Molndal (SE)
Appl. No. 16/336,072
Filed by DENTSPLY IH AB, Mölndal (SE)
PCT Filed Dec. 21, 2016, PCT No. PCT/EP2016/082059
§ 371(c)(1), (2) Date Mar. 22, 2019,
PCT Pub. No. WO2017/108879, PCT Pub. Date Jun. 29, 2017.
Claims priority of application No. 15201646 (EP), filed on Dec. 21, 2015.
Prior Publication US 2020/0269011 A1, Aug. 27, 2020
Int. Cl. A61M 25/00 (2006.01); B26D 7/18 (2006.01)
CPC A61M 25/0015 (2013.01) [A61M 25/007 (2013.01); B26D 7/1836 (2013.01); A61M 2210/1089 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method for forming holes through a lateral wall of a catheter, said method comprising the steps of:
providing a section of the catheter between a pair of tubular punching members each having an internal lumen and aligned so that their central longitudinal axes coincide;
driving at least one tubular punching member of said pair of tubular punching members towards the other in order to punch through said lateral wall of the catheter and thereby to sever one pair of oppositely located hole pieces from the lateral wall;
actuating an ejection unit, in order to force said severed hole pieces away from the catheter via one of said internal lumens of the tubular punching members;
withdrawing, after said actuating of the ejection unit, said pair of tubular punching members.