Method, apparatus and system for nanovibration coating and biofilm prevention associated with medical devices

• US 20050095351A1
• Filed: 11/10/2004
• Published: 05/05/2005
• Est. Priority Date: 05/29/2003
• Status: Abandoned Application

• Current Assignee: Jona Zumeris, Yanina Zumeris, Zadick Hazan
• Original Assignee: Jona Zumeris, Yanina Zumeris, Zadick Hazan
• Inventors: Zumeris, Yanina, Zumeris, Jona, Hazan, Zadick
• Application Number:
  US10/986,530
• Publication Number:
  US 20050095351A1
• Time in Patent Office: Days
• US Class Current: 427/2.1
• CPC Class Codes: A61L 2/02 using physical phenomena
• CPC Class Codes: A61L 2/24 Apparatus using programmed or automatic operation
• CPC Class Codes: A61L 29/08 Materials for coatings
• CPC Class Codes: A61L 29/14 Materials characterised by their function or physical properties , e.g. lubricating compositions

Abstract

An acoustic indwelling medical device system, which may include a vibration apparatus and at least one transducer, may be integrated with standard medical devices. This acoustic system may use electric signals to enable the transducer to generate nanovibrations within the indwelling medical device system, to inhibit the entry of microorganisms from external sources. Such vibrations may enable dispersal of microbe colonies, thereby preventing or dispersing biofilm that may cause infections.

Claims

1. A method for preventing biofilm formation associated with indwelling medical devices, the method comprising forming a nanovibration coating process over surfaces of medical device, by communicating mechanical vibration energy to the medical device to enhibit entry of micro organisms from external and internal areas of the medical device.

37. The method of claim 1, comprising nano vibration coating process which can be directed and focused at a determinate part of standard medical device:

in particular it can be directed to act either on part of device outside the body, or at the determinate part of device inside the body.

38. The method of claim 1, whereas piezo element enables in addition to nano vibration coating process to achieve the effect of pushing or pulling materials on said surfaces, including fluids and particulates suspended in them.

39. The method of claim 38, while specific combinations of longitudinal and bending vibration modes (1st harmonic of longitudinal and 2nd harmonic of bending) are used to actuate the piezo element.

40. The method of claim 38, comprising piezo element'"'"'s ability to manipulate with waves front with backward and forward acceleration;

the direction of the movements can be simultaneously opposite one to another on each opposing surfaces.

41. The method of claim 1, comprising ability to form nanovibration coating process, whereas this process is achieved with cylindrical piezo element and may form standing waves in the liquid (which is in contact with this cylindrical piezo element) and considerable micro pressure changes occur, resulting in partial or whole dissinfection and killing bacteria in the liquid.

42. The apparatus of claim 41, while the cylindrical piezo element may be of different shapes, having rotation axis and to excite the process the bending and torsion vibration modes must be applied simultaneously.

43. The apparatus of claim 42, comprising the cylinidrical piezo element, whereas the standing wave may constitute barrier and block the ability of bacteria to enter and whereas pulsing standing waves can contribute to the effect, to expel out biological matter.

56. The method of claim 1, whereas transverse vibration energy effects the fluids in contact and the friction of the fluids is reduced, the vibration may expel the fluid and drying process at the point of contact with the skin occur, which effect in resistant to the bacteria entry.

57. The method of claim 56, which slows or prevents the entry of bacteria at the point between the skin and external wall of the device, at the point of device entry, into the body.

58. The method of claim 56, comprising transversal energy, which effects the surrounding tissues and prevents the establishment of biofilms.

59. The method of claim 1, avoiding at the point and the whole part of the device which entry into vascular system (vein, artery, etc.) thrombus attachment and grows.

60. The method of claim 1, whereas the frequent thrombus and the attachment of the matter on the tip face is prevented and effects in reduce friction of the liquid, flowing throw the device, when the liquid is pushed or pulled of the body, regardless of the direction, and prevents the attachment of any particular matter.

61. The method of claim 60, comprising nano vibration coating process, which reduce dynamic friction of the liquid in the contact with the medical device, improving the flow and speeding up drying, when needed.

62. The method of claim 1, comprising ability to form nanovibration coating process, whereas the energy of this process may have a transverse character, that means the energy may be transferred to the tissues of the human body, from external surface.

65. The method of claim 1, comprising one or more catheters from the group consisting of an IV catheter, urinary catheter, a gastric catheter, a lung catheter, and cardiovascular catheter.

76. The method of claim 1 comprising nano vibration coating process which can be incorporated or embedded or integrated other wise attached to completely new designed medical devices and accessories.

2. Apparatus for preventing biofilm formation associated with indwelling medical device, the apparatus operative to generate a nanovibration coating process over the medical device surfaces, by generating electric signals by a processor and transforming the electric signals to mechanical waves with nano amplitudes, and transmitting the mechanical vibrations by means of traveling waves to the medical device.

3. The apparatus of claim 2 comprising ability to form nanovibration coating process on external, internal, torsion surfaces and their binding lines of medical device—

simultaneously or separately, by means of applying mechanical vibration energy to the medical device.

4. The apparatus of claim 2 comprising ability to excite nanovibration coating process all over medical device surfaces, by applying mechanical vibration energy to the device using periodical, non periodical, electromechanical, electro-magnetic energy sources.

5. The apparatus according to claim 2 wherein the nanovibration coating process has a spectrum plot ranging from about 0.001 to 10 MHz

6. The apparatus according to claim 2, wherein the nanovibration coating process have amplitudes ranging from about 1 to about 50 nanometers.

7. The apparatus according to claim 3, comprising piezo element, which is adjusted to be in resonance of the system, consisting of piezo element attached to standard medical device, for optimal process.

8. The apparatus according to claim 2, whereas controller comprises:

power supply (battery or other existing power supply), central processing units with memory nanovibration oscillator for pulsed or harmonic signals.

9. The apparatus according to claim 2, comprising controller to achieve the system resonance, which depends on piezo element attachment place, attachment type and the surrounding liquid (temperature, physical characteristics, quantity).

10. The apparatus according to claim 8 comprising modulators and switching device of vibration methods, which transmits electrical signal to mechanical vibration device for exciting complex of mechanical vibrations to excite nanovibration coating process on standard medical devices, in relation to patient health status and the program of medical personal to adjust and match biological cycles, changes in body temperature pathological conditions.

11. The apparatus according to claim 8, comprising:

nanovibration oscillator (with range of frequency from 11 Hz to 50 MHz), two switching devices, which switch together or separately frequency and amplitude modulators (using cycling ring and additive synthesis modulators).

12. The apparatus according to claim 8, comprising the second switching device, which chooses and amplifies vibration mode of the mechanical vibration actuator, using single phase, two phases and multi phase electrical signal.

13. The apparatus according to claim 8, comprising:

receiver device for information on nanovibration process and audio, video, alarm system to inform the status of nanovibration process in standard medical device.

14. The apparatus according to claim 3, with different amplitude and frequency, ranges of nanovibration coating process created using the first harmonics of vibration modes applied separately (of longitudinal, bending, torsion, or other type), proceeding to nanovibration coating process in the range of up to 0,5 Hz.

15. The apparatus according to claim 3, comprising ability to combine simultaneously two vibration modes and effecting in nanovibration coating process in the range of up to 1.0 MHz frequency, with variety of amplitudes.

16. The apparatus according to claim 3, whereas the same frequency ranges as in claim above can be achieved, by combining vibrations of different harmonics (1^st, 2^nd, 3^rd, 4^th) of one type of vibrations (longitudinal, bending, torsion, their combination or other type).

24. The apparatus according to claim 7 for standard indwelling medical device, whereas piezo ceramic element is connected to the medical device externally to the body.

25. The apparatus of claim 7, comprising a piezo element attached to the catheter in a position selected from the group consisting of on the side, surrounding or inside of the medical device.

26. The apparatus of claim 7, comprising at least one piezo element coated with a conducting material, enabling better energy communication with external or internal surface of the medical device.

27. The apparatus according to claim 26, wherein mechanical vibration device may have at least one piezo material body, which may have cylindrical shape and his internal, external and torsion surfaces are covered by electrodes.

28. The apparatus according to claim 27, wherein the electrodes may be divided with non-conductive places, which may be parallel or non-parallel to polarization direction;

and the single phase, two-phase, or multi phase electrical signal may be sent from controller to electrodes; and

by means of different connections between electrodes longitudinal, bending and torsion vibrations may be excited simultaneously or separately.

29. The apparatus according to claim 28, whereas piezo ceramic element has a shape selected from the group consisting of ring shaped and disk shaped.

30. The apparatus of claim 2, whereas nanovibration coating effect can be reached using bending, torsion an thickness vibration modes separately or together and the effect extends to a certain distance from the piezo element in both directions of it'"'"'s longitudinal axis.

31. The apparatus of claim 30, while nano vibration coating process is achieved by bending vibration type;

the combination of more than one harmonic modes enables to avoid the “

dead points” and

at no time will the vibrations be zero (by amplitude, frequency, plane); and

“

dead points”

of two different bending vibration modes not coincide.

32. The apparatus of claim 30, while nano vibration coating process is achieved by torsion vibration type;

the combination of more than one harmonic mode enables to avoid the “

dead points” and

at no time will the vibrations be zero (by amplitude, frequency, plane); and

“

dead points”

of two different torsion vibration modes not coincide.

33. The apparatus of claim 30, comprising the electrodes on the surfaces of cylindrical piezo element divided into different shapes (two or more electrodes).

44. The apparatus of claim 2, whereas piezo element may be attached to standard medical device in a manner, when external surface of vibration device is attached to internal surface of medical device.

45. The apparatus of claim 2, whereas piezo element may be attached to standard hollow medical device, such as catheter, in a manner, when internal surface of vibration device is attached to external surface of medical device.

46. The apparatus of claim 2, whereas piezo element may be attached to standard medical device in a manner, when one piece of vibration device is used and it'"'"'s external and internal surfaces attached to two different, hollow medical devices.

47. The apparatus of claim 2, whereas piezo element may be attached to standard medical device which has thick wall and two pieces of vibration device can be applied—

one internally and another externally.

48. The apparatus of claim 2, comprising lengthy medical devices, which may require multi piezo elements to achieve the desired effect and when the medical device is furnished with actuators having two or more characteristic signals;

and the following is achieved;

the length of walls of the device is vibrated in natural vibration of longitudinal, bending and torsion modes simultaneously.

49. The apparatus of claim 48, whereas the said effect can be achieved by either attaching the actuators internally or externally to medical device surface.

50. The apparatus of claim 48, whereas at least two shapes of the group consisting of convex, concave and tapered can be used for piezo element shape.

51. The apparatus of claim 2, whereas piezo element can be directly attached to the medical device, or by use of standard or specifically designed connectors (one or more, having different physical mechanical properties).

66. The apparatus of claim 2 for achieving nanovibration coating in standard peripheral IV catheter, consisting of standard medical IV catheter and at least one piezo element, attached to the connector or to the hub of the said device.

67. The apparatus of claim 2, comprising one piezo element, which can be used as sensor, and the other as a piezo element for nano vibration coating process and these piezo elements are excited from controller, which both controls and receivers signals from sensor.

68. The apparatus of claim 2, locating the electrical signal controller and source of energy by attaching on the rest of the hand and allowing free movement of the hand.

69. The apparatus of claim 2, comprising piezo element, which can be placed on any part of the line including starting from the fluid bag, pumps or any ancillary equipment connected to the system;

one or more piezo elements can be used on each of the points, which can serve as entry point for microorganisms.

70. The apparatus of claim 2, comprising piezo element, which can be attached to adhesive aid band (plaster) and by this way attached to standard-medical device.

71. The apparatus of claim 2, providing nano vibration coating process in central vascular catheters/or urinary catheter, applicable in single and multiple channels, whereas the piezo element can be placed on the convergence of the channels or on each of them separately.

72. The apparatus of claim 71, comprising nano vibration coating process in urinary catheter, in which the piezo element can be placed on the connector, on the part of the catheter which is outside of the urinary tract, on the urinary bag separately or on all of them together for the purpose of biofilm and incrustation prevention.

73. The apparatus of claim 2, comprising nano vibration coating process, for endothrahial ventilation tube, which are major cause of death due to pneumonia, (resulting from biofilms formation).

74. The apparatus of claim 2 comprising nano vibration coating process for the ventilation machine which becomes contaminated in standard practice and enable to prevention of biofilm formation at any part of the system, which can be furnished with piezo elements.

75. The apparatus of claim 2 comprising nano vibration coating process whereas the body tissues which are in contact with activated medical device are protected;

arterial, venous, cavities, organs, mucosal membranes are protected from the colonization of bacteria and formation of biofilms.

17. A method of preventing biofilm formation associated with indwelling devices;

comprising ability to form nanovibration coating process, whereas every material point of the surface is moving and there is no point, which is not moving at least in one plane surface.

18. The method of claim 17, comprising capability to excite nanovibration coating process and adjusted to elastic characteristics of the device material.

19. The method of claim 17, for nano vibration coating process, which is achieved by the combination of more than one harmonic modes of longitudinal vibration type and enables to avoid the “

dead points”

(inevitable while using one vibration mode).

20. The method of claim 17, comprising ability to avoid “

dead points”

by applying two different longitudinal vibration modes, so as not coincide, and at no time will the vibrations be zero (by amplitude, frequency, plane).

21. The method of claim 17, comprising nano vibration coating process on external and internal surface which generates transverse vibrations energy in the perpendicular directions to the wall of the device.

34. The method of claim 17, comprising ability to actuate various combinations of vibration modes simultaneously and changed periodically;

and all vibration modes may be achieved on one element.

35. The method of claim 34, whereas the above effect may be achieved by using separate sections of piezo element, which together form cylindrical shape (or other hollow shape) and each of them must have multiple electrode sections on the surface.

36. The method of claim 35, whereas the above effect can be achieved by placement of multiple piezo elements around the device, each having only one electrode.

22. An apparatus for preventing biofilm formation associated with indwelling devices, comprising ability to form nanovibration coating process and have no “

dead points”

, while every material point of the surface is vibrating at least in one plane surface with the amplitude scale from several to 10.0 nanometers.

23. The apparatus according claim 22, comprising ability to form nanovibration coating process, while frequency spectrum of vibrations is in the range from several Hz to 10.0 MHz.

52. A method of preventing biofilm formation associated with indwelling devices, comprising ability to form nanovibration coating process, while this process can be controlled directionally through all length of the device, by intensity and time, and this ability influences on the reduction of biofilm formation.

53. A method for preventing biofilm formation associated with indwelling devices, comprising ability to form nanovibration coating process, whereas the process may be excited in the portion of the device or overall it'"'"'s length.

54. A method of preventing biofilm formation associated with indwelling devices, comprising ability to form nanovibration coating process, whereas feedback—

sensing function is possible, for the purpose of adjustment.

55. A method of preventing biofilm formation associated with indwelling devices, comprising ability to form nanovibration coating process, which enables to expel biological matter (body secretions normally blocked by foreign devices) out of the body and as a result to decline the biofilm formation process.

63. A method of preventing biofilm formation associated with indwelling devices, comprising ability to form nanovibration coating process, which reduces friction and mechanical stress during the introduce and withdraw of the medical device.

64. A method of preventing biofilm formation associated with indwelling medical devices comprising:

an ability utilization of different vibration energies to create different conditions and encourage to grow separate bacteria and to preference the other, in other words—

to select the bacteria (as bacteria differ in their ability to attach and form communities).

77. A method for nanovibration coating process all over surfaces of indwelling medical device;

a method comprising ability to stimulate or release nitric oxide from targeted organs, or tissue, or small area of it.

78. The apparatus for nanovibration coating process all over surfaces of indwelling medical device, comprising ability to stimulate or release nitric oxide from targeted organs, or tissue, or small area of it.

79. A medical apparatus, comprising:

an indwelling medical device capable of being coated with a biofilm;

at least one means for generating nanovibrations, the nanovibrations traveling along surfaces of the device;

a processor to supply at least one electric signal to initiate operation of the means for generating nanovibrations.

80. The apparatus according to claim 79 wherein the nanovibrations have a frequency ranging from about 10 KHz to about 100 MHz.

81. The apparatus according to claim 80 wherein the nanovibrations have a frequency ranging from about 4 MHz to about 80 MHz.

82. The apparatus according to claim 79 wherein the nanovibrations have amplitudes ranging from about 0.001 to about 100 nanometers.

83. The apparatus according to claim 79 wherein the nanovibrations have amplitudes ranging from about 0.1 to about 50 nanometers.

84. The apparatus according to claim 79 wherein the means for generating vibrations generates at least two nanovibrations of different energies which energies have different inhibitory effects upon different types of bacteria.

85. The apparatus according to claim 79 wherein the means for generating nanovibrations comprises at least two piezo ceramic bodies.

86. The apparatus according to claim 85 wherein one of the at least two piezo ceramic bodies generates strongest nanovibrations on an internal surface of the medical device and a second of the at least two piezo ceramic bodies generates strongest nanovibrations on an external surface of the medical device.

87. The apparatus according to claim 79 wherein the means for generating nanovibrations generates the nanovibrations transverse to a longitudinal length of the medical device.

88. The apparatus according to claim 79 wherein the means for generating nanovibrations ensures elimination of dead points where amplitude and frequency are zero.

89. The apparatus according to claim 79 wherein the medical device is a catheter.

90. The apparatus according to claim 79 further comprising a device for receiving information on the status of the nanovibration travel and an information display selected from the group consisting of an audio signal, a video signal and combinations thereof.

91. The apparatus according to claim 79 wherein nanovibrations are restricted to travel along surfaces of the medical device but not through walls of the medical device.

92. A method for inhibiting microorganism growth on medical devices comprising:

connecting to a medical device a means for generating nanovibrations; and

transmitting electrical signals to the means for generating nanovibrations from a signal computer processing unit;

wherein the generated nanovibrations inhibit the formation of microorganisms on surfaces of the medical device.

93. A method according to claim 92 wherein the nanovibrations have a frequency ranging from about 10 KHz to about 100 MHz.

94. A method according to claim 92 wherein the nanovibrations have an amplitude ranging from about 0.001 to about 100 nanometers.

95. A method according to claim 92 wherein the nanovibrations are generated to promulgate transverse to a longitudinal length of the medical device.