Fluid exchange catheter system
AssigneeIrras AB
InventorChristos Panotopoulos
Life of this patent
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Abstract
A method of infusing and aspirating fluid from the body is provided. The method includes providing a catheter system which includes an inner lumen, the proximal end of which is connected to an infusion mechanism configured to control infusion of a fluid, and an outer lumen, the proximal end of which is connected to an aspiration mechanism configured to control aspiration of fluid from the body. The method also includes activating the infusion mechanism to infuse fluid into the body for a first infusion time period and at a first infusion pressure, disabling the infusion mechanism to stop infusion, and activating the aspiration mechanism to aspirate fluid for a first aspiration time period and at a first aspiration pressure.
Claims20
A fluid exchange catheter system, comprising:
- a catheter comprising:
- a first lumen having a proximal end, a distal end, and a lumen wall extending between the proximal end and the distal end;
- a second lumen having a proximal end, a distal end, and a lumen wall extending between the proximal end and the distal end;
- an exchange surface at the distal end of the first lumen comprising a plurality of pores enabling fluid exchange between the catheter and an environment surrounding the catheter;
- an aspiration mechanism operably connected to the proximal end of the first lumen;
- and
- an infusion mechanism operably connected to the proximal end of the second lumen,
- wherein the infusion mechanism and the aspiration mechanism are programmed to create a pattern of negative pressure in the first lumen and a synchronized pattern of positive pressure in the second lumen;
- and
- wherein the infusion mechanism is further programmed to periodically disperse, through the distal end of the second lumen, a jet of fluid to remove organic substances that are blocking one or more of the pores of the exchange surface.
A method of infusing and aspirating fluid from the body using a catheter, comprising:
- a) providing a catheter system, comprising:
- i) a first lumen having a proximal end, a distal end, and a lumen wall extending between the proximal end and the distal end;
- ii) a second lumen having a proximal end, a distal end, and a lumen wall extending between the proximal end and the distal end;
- iii) an exchange surface at the distal end of the first lumen comprising a plurality of pores enabling fluid exchange between the catheter and an environment surrounding the catheter;
- iv) an aspiration mechanism operably connected to the proximal end of the first lumen;
- and
- v) an infusion mechanism operably connected to the proximal end of the second lumen,
- b) activating the infusion mechanism to infuse fluid from an infusion fluid source through the second lumen and into the body for an infusion time period and at an infusion pressure and infusion flow rate while the aspiration mechanism is disabled, wherein infusion of the fluid includes periodically dispersing a fluid jet through the second lumen to remove substances that are blocking one or more of the pores of the exchange surface;
- c) disabling the infusion mechanism to stop infusion;
- d) activating the aspiration mechanism to aspirate fluid from the body through the first lumen for an aspiration time period and at an aspiration pressure and aspiration flow rate while the infusion mechanism is disabled;
- e) disabling the aspiration mechanism to stop aspiration;
- f) repeating steps b) through e).
A fluid exchange catheter system, comprising:
- a catheter comprising:
- an outer lumen having a proximal end, a distal end, and a lumen wall extending between the proximal end and the distal end and forming an interior lumen space at the distal end of the outer lumen;
- an inner lumen having a proximal end, a distal end, and a lumen wall extending between the proximal end and the distal end, wherein the distal end of the inner lumen is disposed within the interior lumen space;
- an exchange surface disposed at the distal end of the outer lumen comprising a plurality of pores enabling fluid exchange between the catheter and an environment surrounding the catheter;
- and
- one or more mechanisms for creating programmable changes of pressure in the outer lumen and the inner lumen, wherein the programmable changes of pressure create periodically changing liquid pressure gradients to remove organic substances that are blocking one or more of the pores of the exchange surface.
Dependencies are inferred from the claim text.