US 12,274,813 B2
Urinary catheter
Kim Bager, Lyngby (DK); and Frederik Seier Wermuth Thingbak, Gilleleje (DK)
Assigned to Coloplast A/S, Humlebaek (DK)
Appl. No. 17/428,987
Filed by Coloplast A/S, Humlebaek (DK)
PCT Filed Feb. 7, 2020, PCT No. PCT/DK2020/050032
§ 371(c)(1), (2) Date Aug. 6, 2021,
PCT Pub. No. WO2020/160738, PCT Pub. Date Aug. 13, 2020.
Claims priority of application No. PA 2019 70088 (DK), filed on Feb. 8, 2019; application No. PA 2019 70089 (DK), filed on Feb. 8, 2019; application No. PA 2019 70090 (DK), filed on Feb. 8, 2019; application No. PA 2019 70091 (DK), filed on Feb. 8, 2019; and application No. PA 2019 70092 (DK), filed on Feb. 8, 2019.
Prior Publication US 2022/0118161 A1, Apr. 21, 2022
Int. Cl. A61M 25/00 (2006.01); A61L 29/08 (2006.01)
CPC A61L 29/08 (2013.01) [A61M 25/0045 (2013.01); A61M 25/007 (2013.01); A61M 2025/0046 (2013.01); A61M 2025/0062 (2013.01)] 24 Claims
OG exemplary drawing
 
1. An intermittent urinary catheter comprising:
a tubular portion comprising a tubular wall having an inner surface and an opposite outer surface, the inner surface of the tubular wall forming a drainage conduit, the tubular portion extending in a longitudinal direction from a proximal insertion end configured for insertion into a urethra to a distal outlet end configured for draining urine from the drainage conduit;
a hydrophilic material deposited on at least an insertable part of the opposite outer surface of the tubular wall, where the hydrophilic material is configured to change from a non-swelled condition to a swelled condition by contact with a swelling medium, the hydrophilic material defining a coating thickness measured from the opposite outer surface of the tubular wall to an exposed hydrophilic surface; and
a plurality of drainage openings formed through the hydrophilic material and through the tubular wall, where formation of each of the plurality of drainage openings provides a drain opening wall extending between the inner surface and the opposite outer surface of the tubular wall with a projection encircling each of the plurality of drainage openings;
wherein the formation of each of the plurality of drainage openings removes the hydrophilic material from an entirety of each of the drain opening walls extending from the inner surface of the tubular wall to an outermost radial end of the projection encircling each of the plurality of drainage openings;
wherein the projection extends above the hydrophilic surface when the hydrophilic material is in the non-swelled condition.