US 12,246,138 B2
Liquid medication-injecting urinary catheter
Hyang Nam Ann, Seoul (KR)
Assigned to EZUROTECH CO., LTD., Seoul (KR)
Filed by EZUROTECH CO., LTD., Seoul (KR)
Filed on Feb. 27, 2024, as Appl. No. 18/588,390.
Application 18/588,390 is a continuation of application No. PCT/KR2022/006752, filed on May 11, 2022.
Claims priority of application No. 10-2022-0019841 (KR), filed on Feb. 16, 2022.
Prior Publication US 2024/0198040 A1, Jun. 20, 2024
Int. Cl. A61M 25/00 (2006.01); A61M 27/00 (2006.01)
CPC A61M 25/0017 (2013.01) [A61M 25/0026 (2013.01); A61M 25/007 (2013.01); A61M 27/008 (2013.01); A61M 2025/0037 (2013.01); A61M 2210/1089 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A medical liquid-injecting urinary catheter comprising:
a catheter body that is flexible and has a hollow tubular shape;
a retention balloon positioned around one end of the catheter body and spaced apart from the one end;
a urination port connected to the other end of the catheter body and configured to transport urine out of the body;
an air injection port connected to the other end of the catheter body and configured to inject air into the retention balloon; and
a medical liquid-injection port connected to the other end of the catheter body and configured to inject a medical liquid,
wherein,
in a cross-sectional view of the catheter body, a urination lumen communicating with the urination port, an air injection lumen communicating with the air injection port, and a medical liquid-injection lumen communicating with the medical liquid-injection port are arranged to be separated from each other, and
a plurality of medical liquid discharge outlets are formed on a circumferential surface of the catheter body in such a configuration that the plurality of medical liquid discharge outlets communicate with the medical liquid-injection lumen and are spaced apart from each other in a direction in which the catheter body extends, and
a spiral medical liquid distribution groove spirally extending in a circumferential direction of the catheter body is formed in the direction in which the catheter body extends, and
the medical liquid discharge outlets are arranged on intersection points where a virtual line parallel to the direction in which the catheter body extends intersects the spiral medical liquid distribution groove, rather than on the circumferential surface where the spiral medical liquid distribution groove is not formed, and
the spiral medical liquid distribution groove comprises a first spiral groove, which extends around the catheter body for at least one rotation on one side of the retention balloon, and a second spiral groove, which extends around the catheter body for at least one rotation on a side opposite to the one side of the retention balloon, and
the medical liquid discharge outlets comprise at least one first outlet formed on the first spiral groove, and at least one second outlet formed on the second spiral groove.