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Publication numberUS20060025716 A1
Publication typeApplication
Application numberUS 11/207,334
Publication date2 Feb 2006
Filing date18 Aug 2005
Priority date6 Oct 2000
Also published asUS6964647, US20090024076, WO2002028350A2, WO2002028350A3, WO2002028350A8
Publication number11207334, 207334, US 2006/0025716 A1, US 2006/025716 A1, US 20060025716 A1, US 20060025716A1, US 2006025716 A1, US 2006025716A1, US-A1-20060025716, US-A1-2006025716, US2006/0025716A1, US2006/025716A1, US20060025716 A1, US20060025716A1, US2006025716 A1, US2006025716A1
InventorsEilaz Babaev
Original AssigneeEilaz Babaev
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Nozzle for ultrasound wound treatment
US 20060025716 A1
Abstract
A nozzle for ultrasound wound treatment comprising a main body with proximal and distal ends, a reservoir and valve. The proximal end of the nozzle being removably attached to an ultrasound transducer. The distal end of the nozzle being marginally close and coaxial to the free distal end of the ultrasound transducer. The body of the nozzle connected with liquid reservoir, which holds the wound treatment solution and delivers same to the free end of ultrasound tip directly or through a tube. The nozzle is provided with valve for controlling flow rate of wound treatment solution. The nozzle can mix different liquids or a liquid with a gas and deliver same to the wound surface. The nozzle can also be provided with trigger system for one hand use. The present invention is a device, using ultrasonic waves to create, direct and deliver liquid treatment spray to a wound surface.
Images(11)
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Next page
Claims(21)
1-43. (canceled)
44. A method for treating a wound comprising:
providing a transducer having a distal radiation surface in proximity to the surface of the wound for emitting ultrasonic energy;
providing a nozzle having a main body supported by the transducer, the main body having a proximal end that removably attaches to a housing of the transducer, the main body having a distal end positioned at a distance from the distal radiation surface of the transducer, the main body defining an opening for delivering a fluid to the distal radiation surface of the transducer for producing a spray; and
delivering the emitted ultrasonic energy to the wound through the spray.
45. The method according to claim 44, wherein the nozzle comprises a valve for controlling a flow rate of the fluid through said opening.
46. The method according to claim 44, further comprising the step of storing the fluid within a reservoir in fluid communication with said opening.
47. The method according to claim 44, wherein the ultrasonic energy provides a bactericidal and a therapeutic effect for decreasing the healing time for the wound.
48. The method according to claim 47, wherein the therapeutic effect is selected from the group consisting of delivering at least one medicament to the wound, cleansing a surface of the wound, and stimulating healthy tissue cells.
49. The method according to claim 44, wherein the fluid includes one or more components selected from the group consisting of gas, drugs, liquid, and saline.
50. The method according to claim 44, wherein the distal radiation surface is threaded.
51. The method according to claim 44, further comprising the step of introducing a second fluid to the distal radiation surface, and wherein the step of delivering the emitted ultrasonic energy to the wound includes the step of delivering the second fluid to the wound.
52. The method according to claim 44, wherein the distal radiation surface has a shape selected from the group consisting of cylindrical, multiangular, rectangular, elliptical, ovular, and conical.
53. A wound treatment device for treating a wound, said device comprising:
a transducer having a distal radiation surface for emitting ultrasonic energy; and
a nozzle having a main body supported by the transducer, the main body having a proximal end that removably attaches to a housing of the transducer, the main body having a distal end positioned at a distance from the distal radiation surface of the transducer, the main body defining an opening for delivering a fluid to the distal radiation surface of the transducer for producing a spray, wherein the emitted ultrasonic energy is delivered to the wound through the spray.
54. The device according to claim 53, wherein the nozzle comprises a valve for controlling a flow rate of the fluid through said opening.
55. The device according to claim 53, further comprising a reservoir storing said fluid and in fluid communication with said opening.
56. The device according to claim 53, wherein the ultrasonic energy provides a bactericidal and a therapeutic effect for decreasing the healing time for the wound.
57. The device according to claim 56, wherein the therapeutic effect is selected from the group consisting of delivering at least one medicament to the wound, cleansing a surface of the wound, and stimulating healthy tissue cells.
58. The device according to claim 53, wherein the fluid includes one or more components selected from the group consisting of gas, drugs, liquid, and saline.
59. The device according to claim 53, wherein the distal radiation surface is threaded.
60. The device according to claim 53, wherein the distal radiation surface has a shape selected from the group consisting of cylindrical, multiangular, rectangular, elliptical, ovular, and conical.
61. The device according to claim 55, further comprising a second reservoir in fluid communication with a second opening defined by the main body of the nozzle for introducing a second fluid to the distal radiation surface of the transducer.
62. The device according to claim 55, further comprising a propagation path in fluid communication with the reservoir and said opening.
63. The device according to claim 62, further comprising at least one valve positioned along the propagation path for controlling a flow rate of the fluid.
Description
    FIELD OF THE INVENTION
  • [0001]
    The present invention relates to a device for using ultrasonic waves in wound treatment. More particularly, the present invention relates to a device for spraying a wound surface using ultrasonic waves for delivering drugs, killing bacteria, cleansing a surface, and stimulating healthy tissue cells.
  • BACKGROUND OF THE INVENTION
  • [0002]
    Ultrasonic waves have been widely used in medical applications, including both diagnostics and therapy as well as in many industrial applications. One diagnostic use of ultrasound waves includes using ultrasonic waves to detect underlying structures in an object or a human tissue. In this procedure, an ultrasonic transducer is placed in contact with the object or tissue via a coupling medium and high frequency (1-10 MHz) ultrasonic waves are directed into the tissue. Upon contact with the various underlying structures, the waves are reflected back to a receiver adjacent to the transducer. By comparison of the signals of the ultrasonic wave as sent with the reflected ultrasonic wave as received, an image of the underlying structure can be produced. This technique is particularly useful for identifying boundaries between components of tissue and can be used to detect irregular masses, tumors and the like.
  • [0003]
    Two therapeutic medical uses of ultrasound waves include aerosol mist production and contact physiotherapy. Aerosol mist production makes use of a nebulizer or inhaler to produce an aerosol mist for creating a humid environment and delivering drugs to the lungs. Ultrasonic nebulizers operate by the passage of ultrasound waves of sufficient intensity through a liquid, the waves being directed at an air-liquid interface of the liquid from a point underneath or within the liquid. Liquid particles are ejected from the surface of the liquid into the surrounding air following the disintegration of capillary waves produced by the ultrasound. This technique can produce a very fine dense fog or mist. Aerosol mists produced by ultrasound are preferred over aerosol mists produced by other methods because a smaller particle size of the aerosol can be obtained with the ultrasonic waves. One of the major shortcomings of inhalers and nebulizers is that the aerosol mist cannot be directed to a target area without an air stream which decreases the efficiency of ultrasound.
  • [0004]
    Ultrasonic sprayers such as those sold by Sonic and Materials Inc., Misonix Inc., Sono-Tek Inc., and Zervex International, Inc. (see, for example, U.S. Pat. Nos. 4,659,014, 5,104,042, 4,930,700, 4,153,201, 4,655,393, 5,516,043, 5,835,678, 5,879,364, and 5,843,139) operate by passing liquid through a central orifice of an ultrasound instrument-tip. These ultrasonic devices do not have and do not need any removable nozzles to create a liquid spray.
  • [0005]
    Ultrasonic inhalers and drug delivery systems from Medisonic USA, Inc., 3M, Siemens Gmb, The Procter & Gamble Company, Sheffield Pharmaceuticals, and Aradigm, Inc. (see, for example, U.S. Pat. Nos. 4,294,407, 5,347,998, 5,520,166, 5,960,792, 6,095,141, 6,102,298, 6,098,620, 6,026,808, and 6,106,547) operate by atomizing liquid using piezoceramic film. Although some inhalers and delivery systems use nozzles, the nozzles are just for directing the atomized liquid to the mouth by touching the lips. These nozzles do not create any spray, and the inhaler and drug delivery systems can work without them.
  • OBJECTS OF THE INVENTION
  • [0006]
    It is an object of this invention to provide an improved device for treating wounds.
  • [0007]
    It is also an object of this invention to provide an improved device for treating wounds using ultrasonic waves.
  • [0008]
    It is a further object of the invention to provide a device for creating, directing and delivering liquid aerosol spray to a wound surface.
  • [0009]
    It is yet a further object of the invention to provide a device for creating ultrasonic waves and delivering drugs, killing bacteria, cleansing a surface, and/or stimulating healthy tissue.
  • [0010]
    These and other objects of the invention will become more apparent from the more detailed discussion below.
  • SUMMARY OF THE INVENTION
  • [0011]
    The present invention relates to a device using ultrasonic waves to create, direct and deliver liquid aerosol spray to a wound surface. More particularly, the present invention relates to an emission device comprising a nozzle which is a preferably cylindrical, but optionally can be multiangular, from the inside and is cylindrical, rectangular or multiangular from the outside distal end; a liquid reservoir; and a different shaped proximal end to be removably attached to ultrasound transducer.
  • [0012]
    The liquid reservoir is provided with a valve, which works as a dispenser and allows liquid to reach the ultrasound tip as drops or via continuous flow through an orifice and a gap.
  • [0013]
    The proximal end of the nozzle can be connected to the transducer housing in a variety of different ways, such as by threads, bolts or screwed on, snap/friction fit, or by other means.
  • [0014]
    The liquid reservoir portion of the nozzle can be attached to the top, side, or bottom of the nozzle body or located outside the nozzle body. Liquid from the reservoir may be delivered under gravity, or by motorized pump. The liquid reservoir can be elastic or rigid, with or without a cover, and can be made from a variety of different materials, such as, for example, metal, plastic, rubber, ceramic, or other suitable material, and is provided with metered dose device or a liquid dispenser.
  • [0015]
    The liquid reservoir can provide the free end of an ultrasound transducer tip with liquid/solution directly from inside the distal end of the nozzle, or through an orifice or a tube from the front end of the nozzle.
  • [0016]
    The nozzle can be provided with two, three or more reservoirs or tubes, for mixing different liquids, drugs or liquid(s) with gas. For example, saline can be mixed with oxygen and used to treat a wound. Gas and liquid can be delivered separately from the top, side and bottom of the distal end of the ultrasound transducer to be mixed and sprayed on the wound surface.
  • [0017]
    The valve part of the nozzle can be located between the reservoir and nozzle body, inside of the reservoir, or inside of the nozzle. The nozzle can optionally be provided with a trigger connecting and operating the valve. This design allows a user to operate the device with one hand. The trigger can be located on the top, side or bottom of the nozzle.
  • [0018]
    The nozzle can work without a valve, if, for example, the reservoir is made from an elastic rubber material. In this case liquid from the reservoir is delivered by squeezing the elastic reservoir.
  • [0019]
    The main body and distal end of the nozzle may be cylindrical, oval, elliptic, conical, rectangular or multiangular from the inside.
  • [0020]
    From the outside, the main body and distal end of the nozzle can be any shape such as, for example, a cylinder, cut cylinder, cone, cut cone, concave, double cut, rectangular, multiangular or a combination of these shapes.
  • [0021]
    The proximal end of the nozzle can be any shape, but must be removably attachable to the ultrasound transducer, for example, via threads, friction fit, screws, slots, spline, or other means.
  • [0022]
    The shape of the distal end of the nozzle as viewed from the horizontal side can be cylindrical, a cut cylinder, conical, a double cut cylinder or cone, spherical, elliptic/oval or curved, multiangular, waved or a combination of these shapes.
  • [0023]
    Finally the ultrasound wound treatment nozzle can be comprised of many different parts, such as a body/housing, reservoir, valve, and dispenser, or formed in one solid part.
  • [0024]
    While the invention has been described in general terms, the construction and obvious advantages of the device will be more clearly understood with reference to the following description of the various specific embodiments when read in conjunction with the accompanying drawings.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • [0025]
    FIG. 1 is a cross-sectional view of a side elevation of a preferred embodiment of the nozzle and fluid reservoir for ultrasound wound treatment according to the invention.
  • [0026]
    FIG. 2 a) is a cross-sectional view of the nozzle of FIG. 1 with the liquid reservoir located in the preferred top position.
  • [0027]
    FIG. 2 b) is a cross-sectional end view of the nozzle of FIG. 1 with the liquid reservoir located in the side position.
  • [0028]
    FIG. 2 c) is another cross-sectional view of the nozzle of FIG. 1 with the liquid reservoir located in the bottom position.
  • [0029]
    FIG. 2 d) is another cross-sectional view of the nozzle of FIG. 1 with the liquid reservoir located to one side of the preferred top position.
  • [0030]
    FIG. 3 a) is a cross-sectional elevation view of the nozzle of FIG. 1 with the reservoir providing the tip of the nozzle with liquid directly from inside.
  • [0031]
    FIG. 3 b) is another cross-sectional elevation view of the nozzle of FIG. 1 with the reservoir providing the tip of the nozzle with liquid through an orifice or tube from the front end of the nozzle.
  • [0032]
    FIG. 4 a) is a cross-sectional view of the nozzle of FIG. 1 showing the nozzle with multiple liquid entry points.
  • [0033]
    FIG. 4 b) is top plan view of the nozzle according to the invention showing three liquid/fluid reservoirs located side by side.
  • [0034]
    FIG. 4 c) is a cross-sectional end elevation view of the nozzle depicted in FIGS. 4 a and 4 b showing the three reservoirs located side by side with three separate entry points located at different points around the nozzle.
  • [0035]
    FIG. 5 a) is a cross-sectional elevation view of the nozzle of FIG. 1 showing the control valve located within the housing of the liquid reservoirs.
  • [0036]
    FIG. 5 b) is a cross-sectional elevation view of the nozzle of FIG. 1 showing the control valve located outside the body of the liquid reservoir, but within the body housing of the nozzle.
  • [0037]
    FIG. 5 c) is a cross-sectional elevation view of the nozzle of FIG. 1 showing the control valve located at various points along the transfer tube.
  • [0038]
    FIG. 6 is a cross-sectional elevation view of the nozzle of FIG. 1 showing the liquid reservoir in the bottom position without a control valve, where the fluid is delivered via squeezing on a flexible liquid reservoir.
  • [0039]
    FIG. 7 is a cross-sectional side elevation view of the nozzle of FIG. 1 with the fluid reservoir in the top position employing a trigger to open/close the control valve.
  • [0040]
    FIG. 8 a) is a cross-sectional elevation of the nozzle of FIG. 1 showing the distal end of the nozzle with a cylindrical shape.
  • [0041]
    FIG. 8 b) is a cross-sectional elevation of the nozzle of FIG. 1 showing the distal end of the nozzle with an oval shape.
  • [0042]
    FIG. 8 c) is a cross-sectional elevation of the nozzle of FIG. 1 showing the distal end of the nozzle with a conical shape.
  • [0043]
    FIG. 8 d) is a cross-sectional end view of the nozzle of FIG. 1 showing the distal end with a rectangular section.
  • [0044]
    FIG. 8 e) is a cross-sectional end view of the nozzle of FIG. 1 showing the distal end of the nozzle with a multiangular section.
  • [0045]
    FIG. 8 f) is a cross-sectional end view of the nozzle of FIG. 1 showing the distal end of the nozzle with an oval section.
  • [0046]
    FIG. 9 a) is a cross-sectional elevation view of the nozzle of FIG. 1 showing the outside shape of the nozzle as a cylinder.
  • [0047]
    FIG. 9 b) is a cross-sectional elevation view of the nozzle of the invention showing the outside of the nozzle as a flared cylinder.
  • [0048]
    FIG. 9 c) is a cross-sectional elevation view of the nozzle of the invention showing the outside of the nozzle having a conical distal end.
  • [0049]
    FIG. 9 d) is a cross-sectional elevation view of the nozzle of the invention showing the outside of the nozzle with a concave distal end.
  • [0050]
    FIG. 9 e) is a cross-sectional elevation view of the nozzle of the invention showing the outside of the nozzle with a double cut profile.
  • [0051]
    FIG. 9 f) is a cross-sectional elevation view of the nozzle of the invention showing the outside of the nozzle with an oval profile.
  • [0052]
    FIG. 10 a) is a cross-sectional elevation view of the nozzle of FIG. 1 showing the distal end of the nozzle with a rectangular cut shape.
  • [0053]
    FIG. 10 b) is a cross-sectional elevation view of the nozzle of FIG. 1 showing the distal end of the nozzle with a cylindrical cut shape.
  • [0054]
    FIG. 10 c) is a cross-sectional elevation view of the nozzle of FIG. 1 showing the distal end of the nozzle with a conical cut shape.
  • [0055]
    FIG. 10 d) is a cross-sectional elevation view of the nozzle of FIG. 1 showing the distal end of the nozzle with a spherical elliptical oval cut shape.
  • [0056]
    FIG. 10 e) is a cross-sectional elevation view of the nozzle of FIG. 1 showing the distal end of the nozzle with a concave cut shape.
  • [0057]
    FIG. 10 f) is a cross-sectional elevation view of the nozzle of FIG. 1 showing the distal end of the nozzle with a convex shape.
  • [0058]
    FIG. 10 g) is a cross-sectional elevation view of the nozzle of FIG. 1 showing the distal end of the nozzle with a double cut shape.
  • [0059]
    FIG. 10 h) is a cross-sectional elevation view of the nozzle of FIG. 1 showing the distal end of the nozzle with a waved cut shape.
  • [0060]
    FIG. 11 is a cross-sectional elevation view of one preferred embodiment of a self destructing disposable nozzle according to the invention.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • [0061]
    The present invention is a device which uses ultrasonic waves to create, direct and deliver liquid spray to a wound surface comprising a nozzle. The nozzle for ultrasound wound treatment includes a nozzle body having a proximal end which can be removably attached to an ultrasound transducer, the distal end of said nozzle body to be adjacent to the ultrasound transducer tip. The nozzle comprises a generally cylindrical main body and a reservoir in which wound treatment liquid/solution is filled and a valve for dispensing and delivering the liquid/solution to the distal end of ultrasound tip.
  • [0062]
    The invention can perhaps be better appreciated from the drawings. A nozzle for ultrasound wound treatment according to the present invention is illustrated in FIG. 1. More particularly, FIG. 1 depicts a cross-sectional view of a side elevation of a preferred embodiment of the nozzle for ultrasound wound treatment, with a main body 10 of the nozzle, a wound treatment liquid/solution reservoir 12, and a retaining wound treatment liquid/solution 14 which is inter-connected via a tube 16, controlled by a valve 18 to deliver a supply of treatment liquid/solution droplets 24 to the distal end of an ultrasound tip 20 of an ultrasound transducer 22. Wound treatment liquid 14 from reservoir 12 is dispensed and delivered by valve 18 to contact distal end of ultrasound tip 20 and spray onto the wound surface.
  • [0063]
    FIGS. 2 a)-d) illustrate possible locations of liquid reservoir 12 relative to nozzle body 10. The preferred location of reservoir 12 is on the top of nozzle body 10, as illustrated in FIG. 2 a), since this arrangement is most convenient, easy to handle and space-saving. Reservoir 12 may optionally be provided with a cover.
  • [0064]
    FIGS. 3 a) and b) depict alternative cross-sectional views of nozzle body 10 and reservoir 12, providing ultrasound tip 20 with liquid/solution directly and through orifice tube 16.
  • [0065]
    FIGS. 4 a)-c), collectively depict side and end elevation views and top views of a three reservoir system for mixing different liquids, drugs, or liquids and gases, for example, saline with oxygen, and treating a wound. Shown are nozzle body 10 and multiple liquid/fluid reservoirs 12, with liquid/fluid treatments 14 being fed via tubes 16 and controlled by valves 18.
  • [0066]
    Gas and liquid can be delivered separately from the top, side and bottom of the distal end of the ultrasound transducer to be mixed and sprayed on the wound surface. This design allows one to mix different liquids and/or liquids with gas, such as saline or an antibiotic with oxygen during wound treatment, without the use of high pressure, which is required with other mixing methods.
  • [0067]
    FIGS. 5 a)-c), collectively depict various locations for the placement of valve 18 between reservoir 12 and tube 16 which delivers liquid/fluid to the distal end of ultrasound transducer tip 20.
  • [0068]
    To avoid liquid loss during dispensing, the distance from valve 18 to the distal end of ultrasound transducer tip 20 should be minimized. This means that valve 18 should be located as close as possible to the distal end of the ultrasound transducer tip 20. For this reason, the most preferred location is as shown in FIG. 5 b).
  • [0069]
    FIG. 6 depicts a cross-sectional elevation view of another preferred embodiment of the nozzle of the invention without valve 18. In this configuration reservoir 12 must be constructed of an elastic material and liquid 14 will be delivered to the ultrasound transducer tip 20 by squeezing the walls of reservoir 12. Reservoir 12 can be rigid, but liquid must the reach the ultrasound tip 20 using a different means.
  • [0070]
    FIG. 7 depicts a cross-sectional elevation view of nozzle body 10 with a trigger 26, which is connected and operates valve 18, thus dispensing and changing liquid flow.
  • [0071]
    FIGS. 8 a)-f), collectively depict various alternative preferred nozzle 10 geometries. The shape of the distal end of nozzle 10 from inside can be cylindrical, as shown in FIG. 8 a), conical, as shown in FIGS. 8 b) and c), (back or forward), rectangular, as shown in FIG. 8 d), multiangular, as shown in FIG. 8 e), elliptic-oval as shown in FIG. 8 f), or a combination of different shapes. The most preferred shape is cylindrical because of the uniform gap created between distal end of nozzle 10 and cylindrical ultrasound tip 20, with this shape.
  • [0072]
    FIGS. 9 a)-f), collectively depict various alternative preferred nozzle 10 geometries from the outside. The shape of the distal end of nozzle 10 from outside can be cylindrical, as shown in FIG. 9 a), conical as depicted in FIGS. 9 b)-c), rectangular as shown in FIG. 9), multiangular as shown in FIG. 9 e), elliptic/oval as shown in FIG. 9 f) or a combination of different shapes.
  • [0073]
    FIGS. 10 a)-h) depict cross-sectional elevational views of the distal end of nozzle showing the different shapes possible, a rectangle as shown in FIG. 10 a), cut cylinder as shown in FIGS. 10 b)-c), spherical/elliptic/oval as shown in FIG. 10 d), concave as shown in FIG. 10 e), convex as shown in FIG. 10 f), double cut as shown in FIG. 10 g), waved as shown in FIG. 10 h) or a combination of different shapes.
  • [0074]
    With reference to FIG. 11, shown is one preferred embodiment of a self-destructing disposable nozzle fabricated from one-piece plastic. A trigger 30 with a needle valve 32 connected with reservoir 12 at a point 34 in closing position. After reservoir 12 is filled with liquid and positioning at the wound, trigger 30 is depressed opening valve 32 by lifting. Because of the rigid connection of trigger 30 to reservoir 12, after pushing trigger 30 gets broken at point 34, and after the first procedure is done, will no longer retain the liquid in reservoir 12. Thus, this becomes a one use disposable reservoir/nozzle arrangement.
  • [0075]
    The preceding specific embodiments are illustrative of the practice of the invention. It is to be understood, however, that other expedients known to those skilled in the art or disclosed herein, may be employed without departing from the spirit of the invention or the scope of the appended claims.
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Classifications
U.S. Classification604/22, 604/82
International ClassificationA61B17/20, A61M35/00, A61M11/00, A61N7/00
Cooperative ClassificationA61M35/00, A61N7/00, A61M11/005, A61M2205/058, A61M11/001
European ClassificationA61M35/00, A61M11/00F, A61N7/00
Legal Events
DateCodeEventDescription
30 Mar 2007ASAssignment
Owner name: CELLERATION, INC., MINNESOTA
Free format text: MERGER;ASSIGNOR:CELLERATION, INC.;REEL/FRAME:019094/0591
Effective date: 20030506
Owner name: CELLERATION, INC., MINNESOTA
Free format text: CHANGE OF NAME;ASSIGNOR:ADVANCED MEDICAL APPLICATIONS, INC.;REEL/FRAME:019102/0655
Effective date: 20020730
7 Feb 2008ASAssignment
Owner name: ADVANCED MEDICAL APPLICATIONS, INC., MINNESOTA
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BABAEV, EILAZ;REEL/FRAME:020474/0080
Effective date: 20011031