CATHETER ASSEMBLY Russian patent published in 2018 - IPC A61M25/00 A61M25/01 

FIELD: medicine.

SUBSTANCE: invention relates to medical equipment, specifically urinary catheter assemblies, in particular for periodic catheterisation. Catheter assembly includes a catheter, a first tube, and a catheter advancing mechanism comprising an advancing element. Catheter and first tube each extend in a distal direction from a proximal end to a distal end. Catheter advancing mechanism is configured to move the catheter assembly telescopically between an unexpanded configuration where the catheter is arranged in a cavity within the first tube and an expanded configuration where at least an inserted part of the catheter is outside the cavity. Catheter advancing mechanism is configured to move the catheter assembly between the unexpanded and the expanded configuration by movement of the advancing element relative to the first tube. Catheter comprises string means attached to the catheter. String means comprises a first string element extending between the catheter and a first attachment point and is adapted to provide a pulling force in a proximal direction opposite the distal direction for moving the catheter relative to the first tube in the proximal direction. String means further comprises a second string element extending between the catheter and a second attachment point and is adapted to provide a pulling force in the distal direction for moving the catheter relative to the first tube in the distal direction. In a second embodiment of the catheter assembly, the catheter is telescopic and comprises a proximal catheter section with a proximal conduit section having an inlet for receiving urine from a body cavity and a distal catheter section with a distal conduit section forming an outlet for draining urine from the telescopic urinary catheter and is in liquid flow communication with the proximal conduit section. Distal catheter section is telescopically movable relative to the proximal catheter section to thereby move the catheter assembly telescopically between the unexpanded and expanded configuration. Catheter assembly further comprises a discharge chamber configured to discharge a fluid by movement of the first tube and the advancing element relative to each other, a pressure chamber arranged to receive fluid discharged from the discharge chamber, and a catheter piston attached to one of the proximal and distal catheter sections and being movable in response to a fluid pressure in the pressure chamber to thereby move the proximal catheter section relative to the distal catheter section and thereby move the catheter assembly from the unexpanded to the expanded configuration when the fluid is received from the discharge chamber.

EFFECT: invention has improved safety by reducing the risk of contamination of parts of the catheter that are inserted into the body, provides improved hygiene and well-being for the user of the temporary catheter, it is easy to use even for less skilled people, by simultaneously making unpacking and insertion of the catheter easy.

17 cl, 15 dwg