Acoustic add-on device for biofilm prevention in urinary catheter
First Claim
1. A device for preventing catheter associated urinary tract infections on a urinary catheter positioned at least partially within a patient'"'"'s body, the device comprising:
- an actuator coupled to the catheter at a location outside of the patient'"'"'s body, and a driver electrically connected between said actuator and said catheter, whereby the actuator generates acoustic surface waves of Rayleigh—
Lamb or Love type, or both, on the catheter and transmits acoustic surface waves around the catheter surface in the direction towards the patient'"'"'s body, whereby the surface waves mechanically create relative oscillation velocity of bacteria in relation to the catheter surface to thereby prevent their attachment to the catheter surfaces.
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Accused Products
Abstract
A urinary catheter clip-on device applies surface acoustic waves of Rayleigh-Lamb and/or Love type to a urinary catheter for preventing biofilms on the catheter surfaces. The bacteria is forced to move relative to the vibrating catheter surface. The amplitudes of bacteria vibrations are in nanometer range. The relative motion of bacteria results in bacteria quorum sensing, and disrupts the bacteria attachment process. The method is preventive as surface acoustic waves create low acoustic energy and bacteria is not killed.
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Citations
53 Claims
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1. A device for preventing catheter associated urinary tract infections on a urinary catheter positioned at least partially within a patient'"'"'s body, the device comprising:
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an actuator coupled to the catheter at a location outside of the patient'"'"'s body, and a driver electrically connected between said actuator and said catheter, whereby the actuator generates acoustic surface waves of Rayleigh—
Lamb or Love type, or both, on the catheter and transmits acoustic surface waves around the catheter surface in the direction towards the patient'"'"'s body,whereby the surface waves mechanically create relative oscillation velocity of bacteria in relation to the catheter surface to thereby prevent their attachment to the catheter surfaces. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 47, 48, 49, 50, 51, 52, 53)
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45. An actuator for prevention of RBC aggregation, by creating surface acoustic energy wherein acoustic surface waves are activated with from about 0.05 to about 0.2 mW/cm2 to effectively prevent E. coli-induced RBC aggregation;
- whereby these surface waves mechanically create relative oscillation velocity of bacteria in relation to RBC, and thereby prevent their aggregation.
- View Dependent Claims (46)
Specification