US 11,653,865 B2
Device for determining removability of Foley catheter
Kwang Suk Lee, Seoul (KR); Hyung Min Park, Seoul (KR); and Dae Hyun Choi, Seoul (KR)
Assigned to INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY, Seoul (KR); and SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION, Seoul (KR)
Filed by INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY, Seoul (KR); and SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION, Seoul (KR)
Filed on Jul. 1, 2022, as Appl. No. 17/856,640.
Application 17/856,640 is a continuation of application No. PCT/KR2020/018848, filed on Dec. 22, 2020.
Claims priority of application No. 10-2020-0000288 (KR), filed on Jan. 2, 2020.
Prior Publication US 2022/0330865 A1, Oct. 20, 2022
Int. Cl. A61B 5/20 (2006.01); A61M 25/00 (2006.01); A61B 5/00 (2006.01)
CPC A61B 5/205 (2013.01) [A61B 5/207 (2013.01); A61B 5/6852 (2013.01); A61B 5/742 (2013.01); A61M 25/0017 (2013.01); A61M 25/0075 (2013.01); A61B 2562/0247 (2013.01); A61M 2025/0001 (2013.01); A61M 2025/0002 (2013.01); A61M 2025/0076 (2013.01); A61M 2205/502 (2013.01); A61M 2205/584 (2013.01); A61M 2205/587 (2013.01); A61M 2210/1085 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A device to be coupled to a Foley catheter already inserted into a bladder of a patient, the Foley catheter including a urine passage through which urine is discharged from the bladder, the device comprising:
a pressure sensor connected to a urine outlet of the urine passage and configured to measure a pressure value of the urine discharged through the urine outlet;
a connection tube disposed between the urine outlet and the pressure sensor and configured to have the urine discharged through the urine outlet and flow to the pressure sensor, wherein the connection tube is configured in a form in which a passage connected from the urine outlet branches off into a first branch and a second branch, the first branch is connected to the pressure sensor, and the second branch is formed so that a fluid is injected thereinto;
a check valve disposed in the second branch of the connection tube, wherein the check valve is configured so that the fluid passing through the second branch flows only toward the urine outlet;
a processor connected to the pressure sensor and configured to determine whether to remove the Foley catheter by comparing the pressure value with a predetermined threshold value, wherein the processor is configured to determine a start time of urine discharge as a time point at which the pressure value is greater than a predetermined specific value, determine an end time of the urine discharge as a time point at which the pressure value is smaller than the specific value, the specific value being smaller than the threshold value, and determine that the Foley catheter is to be removed when an average pressure value of the urine measured from the start time of the urine discharge to the end time of the urine discharge is greater than the threshold value, the specific value is a pressure value measured when the urine starts to be discharged in a state in which the Foley catheter and the device are inserted into a bladder of a normal person without a urination disorder, and the threshold value is a pressure value measured on average while the urine is discharged when the urine is normally discharged in a state in which the Foley catheter and the device are inserted into the bladder of the normal person without a urination disorder; and
a display unit connected to the processor and configured to display whether to remove the Foley catheter under control of the processor.