A ureteral catheter includes a drainage lumen having a proximal portion configured to be positioned in at least a portion of a patient's urethra and/or bladder and a distal portion configured to be positioned in a patient's kidney, renal pelvis, and/or in the ureter adjacent to the renal pelvis. The distal portion includes a retention portion for maintaining positioning of the distal portion of the drainage lumen. The retention portion includes a plurality of sections, each section having one or more openings on a sidewall of the retention portion for permitting fluid flow into the drainage lumen. A total area of openings of a first section of the plurality of sections is less than a total area of openings of an adjacent second section of the plurality of sections. The second section is closer to a distal end of the drainage lumen than the first section.

A method for administering chemotherapy medicament, which comprises providing a closed-system drug administration kit, performing sterile catheterization on a patient by placing at least the distal tip of the catheter into the patient's bladder to drain the bladder, inserting a syringe containing the medicament into a safety adapter at a proximal end of the catheter to prevent leakage during attachment, injecting the medicament into the bladder with the injector through the adapter and the drain lumen without leakage of the medicament from the patient into an environment while assessing a pain level of the patient, removing the syringe and closing the catheter to hold the medicament in the bladder for a given treatment time, and, after the given treatment time, draining the medicament out of the bladder with a medicament pressure reservoir through the catheter and into the medicament pressure reservoir for disposal of the kit.

A urinary catheter cap includes a main body that includes a urine introduction passage including a connection hole configured to be connected to a urinary catheter and a drain hole for draining urine, a lid portion that has a tubularly formed portion having a first end portion at the drain hole side and a second end portion at an opposite side and opens and closes the drain hole, a partition portion that divides the tubular portion of the lid portion into a plurality of spaces, and a hydrophobic film that is formed such that the hydrophobic film blocks at least two or more of the spaces at the second end portion of the lid portion. The partition portion may include a partitioning plate that is installed between a plurality of locations of an inner circumferential portion of the tubular portion of the lid portion.

A catheter may include a tubular member having a lumen and an outer surface, a sleeve configured to be positioned in the lumen in a retracted configuration and to evert over at least a portion of the outer surface in an everted configuration, and a filament configured to retract the sleeve into the retracted configuration. The catheter may include an aperture proximal of a distal end, where the filament extends through the aperture from the lumen. A pull member may be on a distal end of the filament. The filament may be looped, coiled, and/or bunched in the catheter when the sleeve is in the retracted configuration. A shuttle may be attached to a distal end of the sleeve, where the shuttle includes a tubular member configured to maintain patency of the sleeve, and the filament engages the shuttle to retract the sleeve into the lumen.

An intermittent urinary catheter assembly comprising an intermittent urinary catheter comprising a catheter tube (4) with a proximal insertion end (3) and a distal outlet end, the catheter tube comprising a plurality of draining openings (6) at a proximal portion, a handle connected to the distal outlet end of the catheter tube (4), where the handle (30) comprises a first cavity (31) and a coaxial second cavity (33), the first cavity being adapted to provide a through-going hole for draining liquid (urine), and a protective tube (40) adapted for being telescoped in a longitudinal direction between a first proximal position and a second distal position, wherein, in the first proximal position, the protective tube (40) at least partly covers the catheter tube and, in the second distal position, the protective tube is positioned in the second cavity of the handle thereby exposing the full length (L) of the catheter tube for insertion.

A percutaneous urinary catheter configured to be deployed in a urinary tract, including: (a) a proximal portion; and (b) a distal portion including a retention portion configured to be deployed in a kidney and/or a renal pelvis, the retention portion including one or more drainage holes leading to one or more lumen(s) within the proximal portion, wherein the retention portion, when deployed, defines a three-dimensional shape sized and positioned to maintain patency of fluid flow between the kidney and/or renal pelvis and a proximal end of the catheter by inhibiting mucosal tissue from appreciably occluding the one or more drainage holes when negative pressure is applied through the catheter.

A percutaneous urinary catheter configured to be deployed in a urinary tract, including: (a) a proximal portion; and (b) a distal portion including a retention portion configured to be deployed in a kidney and/or a renal pelvis, the retention portion including one or more drainage holes leading to one or more lumen(s) within the proximal portion, wherein the retention portion, when deployed, defines a three-dimensional shape sized and positioned to maintain patency of fluid flow between the kidney and/or renal pelvis and a proximal end of the catheter by inhibiting mucosal tissue from appreciably occluding the one or more drainage holes when negative pressure is applied through the catheter.

A urinary catheter is configured to avoid sliding contact between the outer surface of a catheter tube and the urethra wall. A flexible tubular membrane extends through the catheter tube and has a proximal end secured to an anchor outside the urethra as the catheter tube moves into the urethra, pulling the membrane through the proximal end of the tube so it inverts and covers the outer surface of the tube. Alternatively, a catheter tube of flexible material has a proximal end secured to the anchor, and the catheter tube turns inside out as it is inserted, forming a double wall reflected tube with a proximal reflection point. The sterile interior surface of the membrane or tube becomes the external surface facing the urethral wall as the catheter is deployed, and this external surface maintains static contact with the urethral wall as the catheter is advanced or retracted.

Urethrotome dilators for dilating a urethral stricture, and methods for forming and using the same are disclosed. In some embodiments, the urethrotome dilator includes a first distal end with a dilating head, a second proximal end with a handle, and a stem for connecting the first end to the second end. The dilating head may have a first region, a second region, and a channel for receiving a guidewire. The first region of the dilating head may have a substantially conical surface, with a vertex at its distal end and a base at its proximal end. The second region may have a substantially flat surface and a blade for stretching tissue. The blade may be integrally formed within the second region and may extend from the flat surface. The top edge of the blade may be tapered and blunt, while the two opposing sides of the blade may be formed with sharp corners for cutting tissue.

An apparatus for monitoring a nerve includes a Foley type catheter having an exterior surface, and first and second pairs of ring electrodes formed on the exterior surface of the Foley catheter. Each of the first and second pairs of ring electrodes is configured to perform at least one of stimulating the nerve and recording nerve activity.