Catheter insert including one or more sensors

Abstract

In some examples, a device includes a catheter insert elongated body defining a body lumen, the catheter insert elongated body being configured to be at least partially inserted to a catheter lumen defined by a catheter without covering a first fluid opening of the catheter and to form a fluidically tight coupling with the catheter, and one or more sensors positioned on the elongated body. At least one of the one or more sensors are configured to sense a substance of interest. The catheter insert elongated body includes a material that is a substantially non-permeable to the substance of interest.

1 . A catheter insert comprising:
 a catheter insert elongated body defining a body lumen, the catheter insert elongated body comprising:
 a first body distal portion; 
 a second body distal portion configured to be inserted in a drainage lumen of a catheter; and 
 a body proximal portion configured to be inserted in the drainage lumen such that a proximal end of the catheter insert elongated body remains distal to a drainage opening of the catheter while the second body distal portion and the body proximal portion are in the drainage lumen, the body proximal portion being configured to be removeable from the drainage lumen, wherein the body proximal portion defines a first body fluid opening fluidically coupled to the body lumen and the first body distal portion defines a second body fluid opening fluidically coupled to the body lumen; and 
   one or more sensors positioned on the catheter insert elongated body, at least one sensor of the one or more sensors configured to sense a substance of interest,   wherein the catheter insert elongated body comprises a material that is a substantially non-permeable to the substance of interest, the material extending from the first body fluid opening to the at least one of the one or more sensors.   
     
     
         2 . The catheter insert of  claim 1 , wherein the one or more sensors comprises at least one of a temperature sensor, a pressure sensor, a dissolved gas sensor, a flow sensor, a volume sensor, a pH sensor, a creatinine sensor, a color sensor, a urine electrical conductivity sensor, a urine specific gravity sensor, a urine biomarkers sensor, or a motion sensor. 
     
     
         3 . The catheter insert of  claim 1 , wherein the one or more sensors comprise a dissolved gas sensor comprising at least one of a dissolved oxygen sensor or a dissolved carbon dioxide sensor. 
     
     
         4 . (canceled) 
     
     
         5 . The catheter insert of  claim 1 , wherein the material comprises at least one of nylon, polyethylene terephthalate (PET), or polytetrafluoroethylene (PTFE), and the catheter insert is stiffer than the catheter. 
     
     
         6 . The catheter insert of  claim 1 , wherein the substance of interest comprises at least one of oxygen or carbon dioxide. 
     
     
         7 . The catheter insert of  claim 1 , wherein material is a first material and the catheter insert elongated body comprises a layer of the first material and a layer of a second material permeable to the substance of interest. 
     
     
         8 . The catheter insert of  claim 7 , wherein the first material is disposed on an inner surface of the catheter insert elongated body, the inner surface defining the body lumen. 
     
     
         9 . The catheter insert of  claim 7 , wherein the first material is disposed on an outer surface of the catheter insert elongated body. 
     
     
         10 . The catheter insert of  claim 1 , wherein the at least one sensor of the one or more sensors is positioned on the first body distal portion of the catheter insert elongated body. 
     
     
         11 . The catheter insert of  claim 10 , wherein the first body distal portion defines a funnel. 
     
     
         12 . The catheter insert of  claim 1 , wherein the first body distal portion is configured to connect to a fluid collection container. 
     
     
         13 . The catheter insert of  claim 1 , wherein the material extends from the first body distal portion to the body proximal portion and wherein the body lumen is configured to transport urine from the body proximal portion to the first body distal portion. 
     
     
         14 . The catheter insert of  claim 10 , wherein the first body distal portion has a cross-sectional dimension larger than the drainage lumen to enable the first body distal portion to remain external to the drainage lumen when the second body distal portion and the body proximal portion are inserted into the drainage lumen. 
     
     
         15 . The catheter insert of  claim 1 , wherein the catheter insert elongated body is configured to form a fluid tight coupling with the catheter. 
     
     
         16 . The catheter insert of  claim 1 , wherein the catheter comprises a Foley catheter. 
     
     
         17 . A catheter insert comprising:
 a catheter insert elongated body defining a body lumen, the catheter insert elongated body comprising:
 a first body distal portion; 
 a second body distal portion configured to be inserted in a drainage lumen of a catheter and configured to be removeable from the drainage lumen; and 
 a body proximal portion configured to be inserted in the drainage lumen such that a proximal end of the catheter insert elongated body remains distal to a drainage opening of the catheter while the second body distal portion and the body proximal portion are in the drainage lumen, the body proximal portion being configured to be removeable from the drainage lumen, wherein the body proximal portion defines a first body fluid opening fluidically coupled to the body lumen and the first body distal portion defines a second body fluid opening fluidically coupled to the body lumen, 
   one or more sensors positioned on the first body distal portion, at least one of the one or more sensors configured to sense at least one of oxygen or carbon dioxide,   wherein the catheter insert elongated body comprises a material that is a substantially non-permeable to at least one of oxygen or carbon dioxide, the material extending from the first body fluid opening to the at least one of the one or more sensors.   
     
     
         18 . The catheter insert of  claim 17 , wherein the at least one of the one or more sensors comprises at least one of a dissolved oxygen sensor or a dissolved carbon dioxide sensor. 
     
     
         19 . The catheter insert of  claim 17 , wherein the material comprises at least one of nylon, polyethylene terephthalate (PET), or polytetrafluoroethylene (PTFE), and the catheter insert is stiffer than the catheter. 
     
     
         20 . The catheter insert of  claim 17 , wherein the material extends from the first body distal portion to the body proximal portion, and wherein the body lumen is configured to transport urine from the body proximal portion to the first body distal portion. 
     
     
         21 . The catheter insert of  claim 17 , wherein the catheter comprises a Foley catheter.