An example device includes an elongated body defining a lumen, the elongated body comprising a proximal portion and a distal portion; and one or more sensors configured to: stimulate a fluorescence response from one or more fluorescent probes released into a fluid and flowing with the fluid through the lumen; and detect the fluorescence response, wherein the fluorescence response is indicative of a composition of the fluid.

A closed-system, drug administering catheter assembly includes a transfer adapter, a stopcock, a medicament injector containing chemotherapy medicament, a medicament pressure reservoir, and a urethral balloon catheter comprising a drain lumen and a distal tip, all connected together in a closed-system. The medicament injector is configured to inject the chemotherapy medicament through the stopcock, the drain lumen, and into an environment of the distal tip within a patient's organ without leakage of the chemotherapy medicament from the patient into an environment of the patient. The medicament pressure reservoir is configured to store negative pressure that withdraws from the organ used chemotherapy medicament through the drain lumen and the stopcock and holds the used chemotherapy medicament in the medicament pressure reservoir without leakage of the used chemotherapy medicament into the environment of the patient.

The present disclosure relates to a peritoneal cavity-bladder connecting catheter for ascites drainage. The peritoneal cavity-bladder connecting catheter for ascites drainage includes a peritoneal cavity position part positioned on the side of a peritoneal cavity by passing through a bladder wall located between the peritoneal cavity and a bladder, the peritoneal cavity position part having inlets through which ascites flow into an inner space and being formed as a film that surrounds the inner space, and a bladder position part integrally formed with the peritoneal cavity position part and positioned on the side of the bladder located on the side of the bladder wall opposite to the peritoneal cavity, the bladder position part having outlets through ascites flowed into the peritoneal cavity position part are discharged to outside, and being configured to form a closed inner space together with the peritoneal cavity position part.

An implantable renal replacement therapy device may include: a first catheter configured to be inserted into a blood vessel in a subject's body; a pump in fluid communication with the first catheter, the pump is configured to pump subject's blood from the blood vessel; a filter in fluid communication with the pump, the filter is configured to: receive the subject's blood from the pump, and filter the received blood to provide a filtered blood and a filtrate liquid, wherein the filter is in fluid communication with the first catheter to cause an outflow of the filtered blood from the filter to the blood vessel; and a second catheter in fluid communication with the filter and configured to be inserted into an urinary bladder in the subject's body to cause an outflow of the filtrate liquid from the filter to the urinary bladder.

In one example, the disclosure relates to a system comprising an elongated body defining a lumen where the elongated body comprising a proximal portion and a distal portion. An anchoring member may be positioned on the proximal portion of the elongated body. The system further comprising a sensor located on the elongated body where the sensor may be configured to sense at least one flow parameter of a fluid within the lumen. Processing circuitry configured to determine at least one of a density parameter or a temperature parameter of the fluid in the lumen based on the sensed at least one flow parameter of the fluid.

In some examples, a catheter includes an elongated body defining an injection lumen, a drainage lumen, and an inflation lumen. The elongated body includes an anchoring member positioned on a proximal portion of the elongated body. A sensor is positioned on a distal portion of the elongated body or distal to a distal end of the elongated body. The medical device includes an active valve positioned in or about the drainage lumen The active valve is configured to move between a closed state in which, when a proximal end of the elongated body is positioned in a bladder of a patient, the active valve is configured to retain fluid in the bladder, and an open state in which the active valve enables drainage of fluid from the bladder via the drainage lumen.

In one example, the disclosure relates to a system comprising an elongated body defining a lumen where the elongated body comprises a proximal portion and a distal portion. An anchoring member positioned on the proximal portion of the elongated body. The system further comprising a fluorescence material configured to be located within the lumen with a fluid in the lumen. A light source configured to emit light to expose the fluorescence material to the emitted light where the fluorescence material within the fluid is configured to fluoresce when exposed to the light in the lumen. The system further comprising a light detector configured to detect the fluorescence of the fluorescence material. The system configured to detect oxygen in the fluid within the lumen based on the detected fluorescence

Improved flow indwelling urinary catheters are disclosed in which inflow openings at a distal end of a catheter are distally biased and in proximity to a distal end of a catheter balloon resulting in greater urine outflow volume and velocity, greater urine emptying volume from the bladder and patent urine outflow as the catheter is withdrawn from the bladder.

A fluid conduit includes a first portion having a first porosity, a second portion disposed immediately adjacent to the first portion, the second portion having a second porosity that is greater than the first porosity, and a third portion of the fluid conduit disposed immediately adjacent to the second portion, the third portion having a third porosity that is less than the second porosity. Each of the first portion, the second portion, and the third portion may be integrally formed as a single, continuous piece defining the fluid conduit.

A device for snugging a balloon of a catheter against an inner wall of an intra-corporeal lumen or surface serviced by the catheter includes a hollow column having a top end and a bottom end, forming a throughway sized to accommodate a tube of the catheter, and a flange extending from the bottom end of the hollow column generally perpendicularly to length of the hollow column. A slit is formed in the hollow column and the flange through which the hollow column is connectable to the tube of the catheter. The catheter is tugged to contact the balloon to the inner wall of the lumen, and the device is fixed to the tube of the catheter atop the skin of a body serviced by the catheter to tension pressure of the balloon against the inner wall.