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WO-2026092932-A1 - ARRANGEMENT FOR CARRYING OUT A BLADDER LAVAGE

WO2026092932A1WO 2026092932 A1WO2026092932 A1WO 2026092932A1WO-2026092932-A1

Abstract

The invention relates to an arrangement for carrying out a bladder lavage on a person, comprising a storage container filled with a flushing liquid, a flushing line which is fluidically connected to the storage container and which can be connected to a bladder catheter, and a drainage line which can be connected to the bladder catheter, wherein the drainage line is fluidically connected to the storage container via a filter arrangement and a feed pump is arranged along the flushing line, which feed pump transports a flushing liquid flow from the storage container in the direction of the bladder catheter. The invention is characterised in that: the feed pump arranged along the flushing line is directly downstream of the storage container; a valve arrangement designed at least as a two-way valve is arranged downstream of the feed pump along the flushing line, which valve arrangement is fluidically connected to the filter arrangement via a backflush line; and/or the filter arrangement is connected to a mechanical stimulation arrangement which, when activated, causes the filter arrangement to vibrate for cleaning purposes; and/or the filter arrangement is connected to a cleaning unit which mechanically interacts with at least one surface which can be assigned to the filter arrangement.

Inventors

  • RUFFIEUX, KURT
  • Marx, Lancelot
  • STEINER, Dr. Christof

Assignees

  • FILAX Medical AG

Dates

Publication Date
20260507
Application Date
20250926
Priority Date
20241030

Claims (20)

  1. 1. Arrangement for performing bladder irrigation on a person (7) comprising a reservoir (3) filled with an irrigation fluid, an irrigation line (1) fluidically connected to the reservoir (3) and connectable to a bladder catheter, and a drainage line (2) connectable to the bladder catheter, wherein the drainage line (2) is fluidically connected to the reservoir (3) via a filter arrangement (12), and a pump (4) is arranged along the irrigation line (1) which transports a flow of irrigation fluid from the reservoir (3) towards the bladder catheter, characterized in that the pump (4) arranged along the irrigation line (1) is located immediately downstream of the reservoir (3), and that downstream of the pump (4) along the irrigation line (1) a valve arrangement (15) designed at least as a two-way valve is arranged which is fluidically connected to the filter arrangement via a backwash line (14). (12) is connected and/or that the filter arrangement (12) is connected to a mechanical stimulation arrangement (21) which, when activated, vibrates the filter arrangement (12) for cleaning purposes, and/or that the filter arrangement is connected to a cleaning unit (22) which mechanically interacts with at least one surface attributable to the filter arrangement (12).
  2. 2. Arrangement according to claim 1, characterized in that the filter arrangement (12) comprises at least one of the following filter and/or purification units: surface filter, depth filter, membrane filter, sieve filter, particle filter, suspended solids filter, size exclusion filter, activated carbon filter, ion exchanger, distillation filter, reverse osmosis filter, mechanical filter unit, centrifugal filter, sterile filtration using membranes with a pore size less than or equal to 0.22 pm.
  3. 3. Arrangement according to claim 1 or 2, characterized in that at least one disinfection unit (13) of the following type is arranged on or in the storage container (3): Thermal Disinfection unit, UV light disinfection unit, oxygen radical delivery unit, antibiotic-containing liquid delivery unit, chemical disinfectant delivery unit, protein denaturant delivery unit, enzyme inhibitor delivery unit or DNases/RNases, disinfection unit via aerosol formation.
  4. 4. Arrangement according to one of claims 1 to 3; characterized in that at least one temperature control unit (T) of the following type is arranged on or in the storage container (3) and/or on or in the rinsing line (1): infrared radiation, resistive heating element, ultrasonic heat source, convection or contact heat source by means of an exothermic chemical reaction.
  5. 5. Arrangement according to one of claims 1 to 4, characterized in that a weight sensor is provided for measuring the weight of the storage container (3) together with the rinsing liquid located in the storage container (3).
  6. 6 Arrangement according to one of claims 1 to 5, characterized in that a temperature sensor (6) is arranged in or on the flushing line (1 ).
  7. 7. Arrangement according to one of claims 1 to 6, characterized in that a pressure sensor (5) and/or a flow sensor (9) is/are arranged in or on the flushing line.
  8. 8. Arrangement according to one of claims 1 to 7, characterized in that an optical sensor (8) for color measurement is arranged along the drainage pipe (2).
  9. 9. Arrangement according to one of claims 1 to 8, characterized in that a pressure sensor (5) and/or a flow sensor (9) is/are arranged in or on the drainage line (2).
  10. 10. Arrangement according to one of claims 1 to 9, characterized in that a further pump (11) is arranged along the drainage line (2) which transports a liquid flow in the direction of the filter arrangement (12). 11. Arrangement according to one of claims 1 to 10, characterized in that the feed pump (4) and the further feed pump
  11. (11) is designed in the form of one of the following pumps: positive displacement pump, roller pump, flow pump.
  12. 12. Arrangement according to one of claims 1 to 11, characterized in that an intermediate storage container (10) is fluidically connected along the drainage line (2).
  13. 13. Arrangement according to claims 8 to 10 and 12, characterized in that the intermediate storage tank (10) is arranged along the drainage line (2) downstream of the optical sensor (8) and/or the flow sensor (9) and upstream to the further pump (11).
  14. 14. Arrangement according to claim 12 or 13, characterized in that a weight sensor is provided for measuring the weight of the intermediate storage container (10) together with a rinsing liquid located in the intermediate storage container (10).
  15. 15. Arrangement according to claim 12 or 13, characterized in that a filter unit is arranged in the intermediate storage container (10).
  16. 16. Arrangement according to claim 15, characterized in that the filter unit comprises at least one of the following filters: sieve, porous textile structure, in the form of nonwovens, felts, wadding, glass wool or open-pore foam.
  17. 17. Arrangement according to one of claims 10 to 16, characterized in that the further pumping pump (11) arranged along the drainage line (2) is arranged directly upstream of the filter arrangement (12).
  18. 18. Arrangement according to one of claims 10 and 12 to 17, characterized in that the further feed pump (11) takes liquid from the intermediate storage tank (10).
  19. 19. Arrangement according to one of claims 1 to 18, characterized in that the filter arrangement (12) is fluidically connected to a disposal reservoir (16).
  20. 20. Arrangement according to one of claims 1 to 19, characterized in that the storage container (3) has a fluidic access (18) has a rinsing fluid reservoir from which the rinsing fluid is drawn. (19) can be supplied to the storage container (3), and that a further valve arrangement (20) is arranged along the fluidic access (18).

Description

Instructions for performing a bladder irrigation Technical field The invention relates to an arrangement for performing bladder irrigation on a person, comprising a reservoir filled with a rinsing fluid, a rinsing line fluidically connected to the reservoir and connectable to a bladder catheter, and a drainage line connectable to the bladder catheter, wherein the drainage line is fluidically connected to the reservoir via a filter arrangement and a pump is arranged along the rinsing line to transport a flow of rinsing fluid from the reservoir towards the bladder catheter. State of the art In urology, continuous bladder irrigation (CBA), usually performed postoperatively, is an important standard procedure whose main goal is to prevent the formation or retention of blood clots within the body and subsequent illness or complications. The purpose of continuous bladder irrigation is to maintain a very low blood concentration in the lower urinary tract. Technically, CBA ensures the continuous flushing of blood, urine, and tissue components using fresh irrigation fluid, typically saline or Ringer's solution, thus preventing the formation of blood clots. Although this type of irrigation may seem straightforward, CBA is of great importance in clinical practice. Improperly performed CBA can cause pain and bladder spasms, potentially lead to additional unwanted bleeding, and even become life-threatening. These and other potential complications are partly due to the increased pressure caused by a high inflow rate. Therefore, it is important to... On the one hand, the irrigation fluid flow rate must be set high enough to adequately flush out the blood, and on the other hand, the flow rate should be as low as possible to avoid pressure-related complications. Since the amount of bleeding after the operation cannot be controlled, the optimal flow rate must be readjusted over time. Complications due to inadequate monitoring of the urinary tract are far more common. An unnoticed interruption of the irrigation, caused by the irrigation bag running dry or a kink in the inlet tube, can lead to clot formation, which must be removed by a secondary procedure. An unnoticed break in the drainage tube or an overflow of the waste bag leads to a backup of irrigation fluid into the bladder. An unnoticed increase in the amount of blood in the irrigation fluid can lead to significant blood loss for the patient. Therefore, bladder irrigation requires comprehensive and continuous monitoring and adjustment by medical personnel, which represents a high demand for staff and a significant workload. However, this can be mitigated to some extent by the use of sensor-supported monitoring systems. As an example of such monitoring systems, automated monitoring of bladder irrigation by optical detection of bleeding, for example with a camera module or similar device along a section of tubing leading from the patient, should be mentioned. See also the article by Reis, G.; Tan, X.; Kraft, L.; Yilmaz, M.; Schoeb, D.S.; Miernik, A., “Safe Hb Concentration Measurement during Bladder Irrigation Using Artificial Intelligence”, Sensors 2021, 21, 5723. https://doi.org/10.3390/s21175723. Furthermore, the article by Ding et al., 'A novel automatic regulatory device for continuous bladder irrigation based on wireless sensor in patients after transurethral resection of the prostate: A prospective investigation', Medicine (2016) 95:52, DOI: 10.1097/MD.0000000000005721, explains further approaches to controlling the flow of irrigation fluid. In addition to a considerable need for medical personnel, which represents an economically relevant cost factor, the significant consumption of rinsing fluid is another relevant cost factor, especially in urological clinics and hospitals. Document CN 1 12 915 297 B discloses a specially designed bladder irrigation catheter head which, during a physician-performed irrigation procedure, is supplied by an irrigation line and from which a drainage line leads. The irrigation line is connected to an irrigation fluid reservoir, and the drainage line to a filter container. Filtered irrigation fluid from the filter container and clean irrigation fluid from the irrigation fluid reservoir are combined as needed via a Y-piece in the irrigation line leading to the bladder irrigation catheter head. The publication CN 2 19 804 063 U describes a tissue irrigation and collection bottle from which, when the bottle is squeezed, irrigation fluid flows through a tube into a patient's bladder. During the release of the bottle, the suction-driven irrigation fluid, along with any tissue particles, flows back into the bottle. When the bottle is squeezed again, more irrigation fluid is flushed into the bladder, but any tissue fragments remain in the perforated filter inside the bottle. Document WO 2023/244007 A1 discloses an arrangement for bladder irrigation with recirculated irrigation fluid and optional liquid drug additives. The arrangement retur