Abstract:
A compression therapy system for treating deep vein thrombosis in disclosed. The system provides sequential, graduated compression to a selected limb or body part. The system includes a portable compression device having multiple outlets. In one embodiment, up to three outputs may be selectively activated by a user. The wraps may be provided with cold therapy wraps. In a second embodiment, the system utilizes a timer to determine which, if any, of several wraps may be attached and inflates a detected wrap to a correct pressure or powers off the system as may be appropriate.

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
       [0001]    This application claims the priority of U.S. Provisional Patent Application No. 61/442,392 entitled “DEEP VEIN THROMBOSIS THERAPY DEVICE,” filed Feb. 14, 2011, the contents of which are hereby incorporated by reference. 
     
    
     FIELD OF THE INVENTION 
       [0002]    The present invention relates to therapeutic medical devices and more particularly to devices for improving venous blood flow in a patient. 
       BACKGROUND OF THE INVENTION 
       [0003]    Deep vein thrombosis (DVT) affects up to two million people in the United States each year. DVT is the formation of a blood clot or thrombus in a deep vein, such as the femoral vein or the popliteal vein, or the deep veins of the pelvis. More rarely, veins of the arm can be affected, such as in Paget-Schrötter disease. A DVT can occur without symptoms, but the affected extremity will oftentimes be painful, swollen, red, and warm, and the superficial veins may be engorged. A serious complication of a DVT is that a clot could dislodge and travel to the lungs, resulting in a pulmonary embolism. 
         [0004]    Intermittent pneumatic compression can be of benefit to patients deemed to be at risk of deep vein thrombosis. Therefore it is desirable to provide a system for using pneumatic compression that a patient can easily self administer. 
       SUMMARY OF THE INVENTION 
       [0005]    In one embodiment, the device of the invention is a portable battery-operated compression machine that provides Deep Vein Thrombosis (DVT) prophylaxis therapy, i.e., cold and compression to body parts. The device includes a compression pump that is located within a housing along with electronics that control pump operation. The compression pump is used to selectively inflate a first and a second Sequential Compression Device (SCD) sleeve that are typically placed on a patient&#39;s calves, although other body parts may also receive therapy including a patient&#39;s knee, foot, shoulder, or other area. The device has three output ports and includes a selector that allows a user to choose one of several settings. For example, settings include “single limb cuff”, “double limb cuff”, “auxiliary cuff only”, and “single limb and auxiliary cuff”, and “double limb and auxiliary cuff”. The auxiliary cuff is preferably suitable for locating on a patient&#39;s joint, another limb, e.g., a patient&#39;s arm, or elsewhere. In use, the sleeves preferably inflate one at a time up to a preset pressure at a desired time interval, e.g., 50 mmHg every 60 seconds. 
         [0006]    In one embodiment, the device has two output ports. User control is limited to an ON/OFF function. Appropriate wraps containing air bladders are connected to the unit via the two externally accessible air output ports. The control unit fills the wraps to a pre-determined pressure, e.g., 50 mmHg for a larger wrap and 130 mmHg for a smaller wrap. For example, wraps include a large wrap for affixing to a leg of a patient and a smaller wrap for affixing to a foot or ankle of a patient. Although various types of wrap configurations adapted for use on various body parts and combinations of wraps are possible, for purposes of example, “leg wrap” will be used as an example of a larger wrap and “foot wrap” will be used as an example of a smaller wrap. Preferably, a plurality of indicators, e.g., LEDs, are provided on the unit wherein the indicators correspond to an output port. The indicators preferably illuminate solid at the initiation of a fill cycle and remain illuminated solid if a leg wrap is determined to be connected, or alternatively flashes slowly if a foot wrap is determined to be connected to an output. Once a wrap is inflated to a desired pressure level, the pump and corresponding solenoid valve are turned off for a “rest” period of a pre-determined duration. The wrap then deflates through a normally open vent port of the solenoid valve. After the rest period, the next wrap is sequenced, and so on. 
         [0007]    A preferred rest time is approximately 60 seconds between cycles for each output. Therefore, when an inflation cycle through a first output is completed or the device is otherwise reset due to no wrap being detected, then a second output will be cycled on after 25 seconds. When the second output completes its inflation, or is otherwise reset due to no wrap being detected, the first output will again be cycled after 25 seconds, and so on. Therefore, in a preferred embodiment, the time between any single output being turned off and the time the same output is again energized is greater than 50 seconds. 
         [0008]    The device of the invention may be used to provide therapy that is beneficial for patients after surgery to alleviate pain and swelling. Typically, the device is prescribed by a physician for an individual patient who has a high risk of getting DVT due to non-ambulation during and after surgery. The patient will typically use the device for a time period of a few hours up to several weeks depending on the doctor&#39;s prescription. 
         [0009]    A cold therapy wrap may also be placed on the affected extremity for DVT prophylasis. The cold therapy wrap preferably inflates from 20 to 50 mmHg. The cold therapy wrap is preferably gel filled. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0010]      FIG. 1  is a schematic of one embodiment of the cold therapy system of the invention applied to a patient. 
           [0011]      FIG. 2  is a plan view of a first embodiment of the device of the invention. 
           [0012]      FIG. 3  is a side view of the device of  FIG. 2 . 
           [0013]      FIG. 4  is a bottom view of the device of  FIG. 2 . 
           [0014]      FIG. 5  is an exploded view of the device of  FIG. 2 . 
           [0015]      FIG. 6  is a plan view of a second embodiment of the device of the invention. 
           [0016]      FIG. 7  is a schematic of the components of the device of  FIG. 6 . 
           [0017]      FIG. 8  is a plan view of a limb wrap for connection to the devices of  FIGS. 1 and 6 . 
           [0018]      FIG. 9  is a plan view of an outer side of a shoulder wrap for connection to the devices of  FIG. 1 . 
           [0019]      FIG. 10  is a plan view of the inner side of the shoulder wrap of  FIG. 9  for connection to the devices of  FIG. 1 . 
           [0020]      FIG. 11  is a plan view of an inner side of the cold knee wrap of  FIG. 1 . 
           [0021]      FIG. 12  is a plan view of an outer side of the cold knee wrap of  FIG. 11 . 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       [0022]    Referring now to  FIG. 1 , shown is a compression therapy system designated generally  10 . Compression therapy system  10  includes a portable compression assembly  12  ( FIGS. 1-6 ) having a housing  14 . Examples of portable compression assembly  12  include device  13  ( FIGS. 1-5 ) and device  15  ( FIG. 6 ). 
         [0023]    Referring first to device  13 , pump  16  ( FIG. 5 ) is located in housing  14 . Tubing assembly  18  is located in housing  14 . Tubing assembly  18  is provided for receiving compressed air from pump  16 . Tubing assembly  18  preferably defines a first output  20 , second output  22 , and third output  24 . First output  20  connects to first connector  26  that protrudes from housing  14 . Second output  22  is connected to second connector  28 , which protrudes from housing  14 . Third output  24  connects to third connector  30 , which protrudes from housing  14 . First solenoid  32  is in communication with tubing assembly  18  for selectively routing compressed air from pump  16  to first connector  26 . Second solenoid  34  is in communication with tubing assembly  18  for selectively routing compressed air from pump  16  to second connector  28 . Third solenoid  36  is in communication with tubing assembly  18  for selectively routing compressed air from pump  16  to third connector  30 . 
         [0024]    Selector  38  is preferably provided on exterior of housing  14  to be accessible by a user for controlling solenoids  32 ,  34 ,  36 . Selector  38  communicates with electronics board  39  for facilitating control of pump  16 , solenoids  32 ,  34 ,  36  and other components. Battery  40  is in communication with pump  16  for providing power to pump  16 . 
         [0025]    Referring now to device  15  of  FIGS. 6 and 7 , control unit  15  of compression system  10  preferably has housing  50 . First output port  52  and a second output port  54  extend from housing  50 . Output ports  52  and  54  are preferably normally closed valved connectors. Control unit  15  is preferably provided with a face  56  that displays a power indicator, e.g., LED  58 , a low battery indicator, e.g., LED  60 , a first output indicator, e.g., LED  62 , and a second output indicator, e.g., LED  64 . In a preferred embodiment, power switch  66  is also provided on face  56 . Housing  50  preferably also defines an access port to receive power into power input  68 . 
         [0026]    Referring now to  FIG. 7 , housing  50  contains a motorized air pump  70  that supplies pressurized air to air passageway  72 . Air passageway  72  splits into a first passageway  74  and a second passageway  76 . A first 3-way solenoid valve  78  is provided on first passageway  74 . A second 3-way solenoid valve  80  is provided on second passageway  76 . A pressure relief check valve  84  is provided upstream of valves  78  and  80 , preferably on air passageway  72 . In one embodiment, pressure relief check valve  84  is set with a 3 psi lift pressure. 
         [0027]    First pressure switch  86  and second pressure switch  88  monitor pressure on line  85 , which communicates with line  72 . Pressure switches  86  and  88  provide switched signals to MPU of board  92  as pressure in line  72  reaches a preset trigger level. 
         [0028]    First pressure switch  86  is preferably set to have a trigger level at 50 mmHg. A second pressure switch  88  is located on line  85  upstream of second valve  80 . Second pressure switch  88  is preferably set to have a trigger level at 130 mmHg. As will be explained in greater detail below, the MPU of board  92  monitors the time for each of switch  86  and  88  to reach the respective trigger level. The time required to read a trigger level is indicative of the volume, and therefore the type, of bladder that is connected to the output  52  or  54  associated with an active one of solenoids  78 ,  80 . If no bladder is connected to an active one of output ports  52  or  54 , the result will be an instant pressure rise due to the normally closed valved connectors of output ports  52 ,  54  when pump  70  is activated. If no wraps are connected to output ports  52 ,  54 , then lines  72 ,  76  will remain blocked. The instant pressure rise indicates “no bladder connected” and the MPU of board  92  will advance to the next step. 
         [0029]    Battery pack  90 , preferably made up of 4 AA cells, is provided as one power source. Alternatively, device  15  can receive power externally via power input  68 . Control circuit board  92  receives power from battery pack  90  or from power input  68 . 
         [0030]    In operation, the user control is limited to manipulating power switch  66  into one of an “On” position or an “Off” position. Appropriate “wraps” containing air bladders, discussed in greater detail below, are connected to unit  15  via externally accessible ports or outputs  52  or  54 . Control unit  15  fills the wraps to a pre-determined pressure, e.g., 50 mmHg for relatively larger leg wraps and 130 mmHg for relatively smaller foot wraps. 
         [0031]    The appropriate output indicator, e.g., LED  62  or  64 , that corresponds to the activated wrap output illuminates “solid” at the initiation of a fill cycle, then remains illuminated solid if a leg wrap is detected or, alternatively begins flashing slowly if a foot wrap is detected on the output. Once pressure reaches a desired level, pump  70  and the corresponding valve, e.g., solenoid valve  78  or  80 , is turned off for a “rest” period of a pre-determined duration. Solenoid valves  78 ,  80  are preferably “3 way”, with the output being common, a normally closed connection to the valve input from the pump and a normally open connection being an exhaust to the atmosphere. The wrap then deflates through normally open vent port of the solenoid valve  78 ,  80 . After the “rest” period, the next wrap is sequenced, and so on. 
         [0032]    The “rest” time is preferably approximately 60 seconds between cycles for each output. Therefore, when air pressure delivered through output  52  completes inflation of an attached wrap or otherwise is reset due to no wrap being detected, output  54  will be cycled after 25 seconds. When air pressure delivered through output  54  completes inflation of an attached wrap or otherwise is reset due to no wrap being detected, output  52  will then again be cycled after 25 seconds, and so on. 
         [0033]    When battery  90  or external power is initially applied to the unit via power input  68 , MPU on board  92  wakes up in “off” mode. 
         [0034]    Power switch  66  is always active, and preferably requires being held depressed for 1 second to operate. When power switch  66  is in an “off” position, a very low current drain takes place. When power switch  66  is in an “on” position, board  92  powers up and illuminates the green Power “on” indicator  58  unless low battery conditions exist, in which case only the yellow, low battery indicator  60  will illuminate. 
         [0035]    A delay, e.g., of three seconds, is provided before any action of pump  70  or solenoid valves  78  or  80  is provided to allow a user time to verify proper wrap connection and unit operation. 
         [0036]    In one embodiment, device  15  operates as follows: 
         [0037]    I. Wrap Inquiry 
         [0038]    The first output  52  is activated and first output LED  62  illuminates “solid”. Solenoid valve  78  is then powered “on” followed by pump  70  turning on, preferable less than one second later. If low pressure switch  86  provides a signal to board  92  indicating a target pressure, e.g., 50 mm Hg has been reached within a short time period, e.g., in less than a time T 1 , e.g., 0.5 seconds after pump  70  starts, board  92  determines that there is no wrap connected to port  52 . First output LED  62 , pump  70  and solenoid valve  78  are then turned off. Second output  54  will then be activated at a later time, e.g., 25 seconds later. 
         [0039]    II. High Pressure Inquiry 
         [0040]    If the low pressure switch  86  provides a signal to board  92  indicating the target pressure, e.g., 50 mm Hg has been reached in a designated time window, e.g., greater than T 1  seconds but less than T 2  seconds, e.g., greater than 0.5 but less than 1.25 seconds, the board  92  determines that a high pressure alarm condition exists, e.g., due to a kinked hose. This condition will cause the first output LED  62  to flash rapidly and sound an audible alarm. Solenoid valve  78  and pump  70  are immediately turned off. The alarm will continue for a period of time, e.g., 2 minutes, and then board  92  of unit  15  will power off unless reset manually by turning unit  15  off via power switch  66  during the alarm. 
         [0041]    III. Wrap Determination 
         [0042]    If the low pressure switch  86  does not provide a signal to board  92  indicating that a trigger pressure, e.g., 50 mm Hg, has been reached within a designated period of time T 3 , e.g., less than 4.5 seconds, board  92  determines that the wrap connected to first output  52  is a relatively large calf wrap instead of a comparably smaller foot wrap. Pump  70  will continue to run until low pressure switch  86  provides a signal to board  92  indicating that a trigger pressure, e.g., 50 mm Hg, has been reached, indicating the end of the first output cycle, i.e., wherein port  52  is active. Then, the second output cycle begins, i.e., wherein port  54  will be activated preferably 25 seconds later. 
         [0043]    IV. Leak Determination 
         [0044]    If the low pressure switch  86  does not provide a signal to board  92  indicating that a trigger pressure, e.g., 50 mm Hg, has been reached within a designated period of time T 4 , e.g., 25 seconds, the board  92  determines that a low pressure alarm condition exists, e.g., due to a leak. This condition will cause the first output LED  62  to flash rapidly and sound an audible alarm. Solenoid valve  78  and pump  70  are immediately turned off. This alarm will continue for a period of time, e.g., 2 minutes, and then board  92  will power off unless reset by manually turning unit  15  off via power switch  66  during the alarm. 
         [0045]    V. Wrap Determination 
         [0046]    If the low pressure switch  86  provides a signal to board  92  indicating that a trigger pressure, e.g., 50 mm Hg, has been reached in a designated time window, e.g., greater than T 2  seconds but less than T 3  seconds, e.g., greater than 1.25 but less than 4.5 seconds, board  92  determines that a wrap connected is a foot wrap. At this point, the first output LED  62  begins flashing slowly, and the pump  70  will continue to run until the high pressure switch  88  provides a signal to board  92  indicating that a target pressure, e.g., 130 mm Hg has been reached, indicating the end of the first output cycle, i.e., wherein port  52  is active. Second output  54  will be activated for a period of time, e.g., 25 seconds later. 
         [0047]    VI. Leak Determination 
         [0048]    If, after entering the foot wrap state, high pressure switch  88  does not provide a signal to board  92  indicating that a trigger pressure, e.g., 130 mm Hg, has been reached within an additional period of time T 5 , e.g., 15 seconds of run time, board  92  again detects a leak alarm condition. This condition will cause the first output LED  62  to flash rapidly and sound the audible alarm. Solenoid valve  78  and pump  70  are immediately turned off. This alarm will continue for a period of time, e.g., 2 minutes, and then board  92  will power off unless reset manually by turning unit  15  off via switch  66  during the alarm. 
         [0049]    VII. Second Output Wrap Determination 
         [0050]    When the second output  54  activates, second output LED  64  illuminates solid. Solenoid valve  80  is powered on followed by pump  70  turning on, preferably less than one second later. If high pressure switch  88 , provides a signal to board  92  indicating that a trigger pressure, e.g., 130 mm Hg, has been reached within a short time period T 1 , e.g., in less than 0.5 seconds after pump  70  starts, board  92  determines that there is no wrap connected. Second output LED  64 , pump  70  and solenoid valve  78  are turned off, and first output  52  will be activated at a later time, e.g., 25 seconds later. 
         [0051]    VIII. High Pressure Determination 
         [0052]    If the low pressure switch  86  provides a signal to board  92  indicating that a trigger pressure, e.g., 50 mm Hg, has been reached within a designated time window, e.g., greater than T 1  seconds but less than T 2  seconds, e.g., greater than 0.5 seconds but less than 4.5 seconds, the board  92  determines that a high pressure alarm condition exists, e.g., due to a kinked hose. This condition will cause the second output LED  64  to flash rapidly and sound an audible alarm. Solenoid valve  80  and pump  70  are immediately turned off. This alarm will continue for a period of time, e.g., 2 minutes, and then board  92  will power off unless reset by manually turning the unit  15  off via power switch  66  during the alarm. 
         [0053]    IX. Wrap Determination 
         [0054]    If the low pressure switch  86  does not close within a designated period of time T 3 , e.g., less than 4.5 seconds, a determination is made that the wrap connected to second output  54  is a larger wrap, e.g., a calf wrap, which possesses a relatively larger bladder, and pump  70  will continue to run until the low pressure switch  86  provides a signal to board  92  indicating that a trigger pressure, e.g., 50 mm Hg, has been reached, indicating the end of the second output cycle. First output  52  will then be activated after a designated period of time, e.g., 25 seconds later. 
         [0055]    X. Low Pressure Determination 
         [0056]    If low pressure switch  86  does not provide a signal to board  92  indicating that a trigger pressure, e.g., 50 mm Hg, has been reached within a designated period of time, e.g., 25 seconds, the board  92  determines that a low pressure alarm condition exists, e.g., due to a leak. This condition will cause the second output LED  64  to flash rapidly and sound an audible alarm. Solenoid valve  80  and pump  70  are immediately turned off. This alarm will continue for a period of time, e.g., 2 minutes, and then board  92  will power off unless reset manually by turning the unit  15  off via power switch  66  during the alarm. 
         [0057]    XI. Small Wrap Determination 
         [0058]    If low pressure switch  86  provides a signal to board  92  indicating that a trigger pressure, e.g., 50 mm Hg, has been reached in a designated period of time, e.g., greater than 1.5 seconds but less than 4.5 seconds, board  92  makes the determination that the wrap connected to port  52  is a foot wrap. At this point, the second output LED  64  begins flashing slowly. Pump  70  continues to run until high pressure switch  88  provides a signal to board  92  indicating that a trigger pressure, e.g., 130 mm Hg, has been reached, indicating the end of the second output cycle. The first output  52  will be activated a designated period of time, e.g., 25 seconds later. 
         [0059]    XII. Leak Detection 
         [0060]    If, after entering the “foot wrap” state, the high pressure switch  88  does not provide a signal to board  92  indicating that a trigger pressure, e.g., 130 mm Hg, has been reached within an additional period of time, e.g., within 15 seconds, board  92  will again detect a leak alarm condition. This condition will cause the second output LED  64  to flash rapidly and sound an audible alarm. Solenoid valve  80  and pump  70  are immediately turned off. The alarm will continue for a period of time, e.g., 2 minutes, and then board  92  will power off unless reset by manually turning the unit  15  off via power switch  66  during the alarm. 
         [0061]    Unit  15  is normally powered via an external AC adapter via power input  68  with battery power pack  90  being available for temporary use. Both sources provide power to the same bus circuit of board  92 . If the voltage on the bus line drops below a certain value, e.g., below 6 volts, while unit  15  is on, the yellow low battery indicator  60  illuminates. If voltage on the line drops further to below a second value, e.g., below 5.5 volts, while unit  15  is on, unit  15  enters into a “lockout” mode wherein yellow LED  60  remains on, but power LED  58  is turned off. All functions except power switch  66  are then inhibited, i.e., put in lockout mode. In lockout mode, power switch  66  can be used to turn the unit  15  fully off, but if an attempt is made to turn unit  15  back to on while bus line is still below the second value, e.g., 5.5 volts, only the yellow LED  60  is illuminated. The MPU on board  92  can switch from “off” to “lockout”, but not to “on” unless voltage on bus line is above the second value, e.g., above the 5.5 volt threshold. 
         [0062]    To reset an alarm condition, switch  66  must be turned off. If switch  66  is not manually turned off within a designated period of time, e.g., 2 minutes of an alarm condition occurring, unit  15  automatically turns itself off. 
         [0063]    Referring now to  FIG. 8 , first compressed air line  142  is provided having an inlet end  143  for affixing to first connector  26  for receiving compressed air from pump  16  or to one of connectors  52 ,  54  of device  15 . First compressed air line  142  has an exit end  144  for delivering compressed air. In a preferred embodiment, first compressed air line  142  has a ⅛ inch inner diameter and is 86 inches long. 
         [0064]    First limb wrap  146  is affixed to exit end  144  of first compressed air line  142 . In one embodiment, first limb wrap  146  has a maximum width of 26 inches and a height of 10½ inches. First limb wrap  146  has an inside sheet  148  and an outside sheet  150  that are joined together by seals, such as heat seals. For example, border seal  152  joins a perimeter of inside sheet  148  and outside sheet  150 . In a preferred embodiment, border seal  152  is preferably ¼ inch wide. Outside sheet  150  is provided with hook member patch  154  having a plurality of hook fasteners. Hook member patch  154  is preferably 1½ inches wide. Inside sheet  148  is preferably provided with loop member patch  156  having a plurality of loop fasteners for selectively engaging the plurality of hook fasteners on hook member patch  154  once first limb wrap  146  is wrapped around a limb, e.g. a calf portion, of a patient. In a preferred embodiment, loop member patch  156  is 1½ inches wide. 
         [0065]    First limb wrap  146  defines a plurality of areas demarcated by seal lines. The plurality of areas include a first side area  158 , a second side area  160 , and inflatable area  162  that is preferably between first side area  158  and second side area  160 . Inflatable area  162  preferably defines three interconnected chambers  164   a ,  164   b , and  164   c , separated by seal lines and connected by air passages  166   a  and  166   b . Stem  168  is provided for engaging exit end  144  of first compressed air line  142 . Stem  168  is connected to one of interconnected chambers  164   a ,  164   b , and  164   c  of inflatable area  162  for delivering compressed air to interconnected chambers  164   a ,  164   b , and  164   c.    
         [0066]    Second compressed air line  170  has an inlet end for affixing to second connector  128  for receiving compressed air from pump  16 . Second compressed air line  170  has an exit end  172  for delivering compressed air. In a preferred embodiment, second compressed air line  170  has a ⅛ inch inner diameter and is 86 inches long. 
         [0067]    Second limb wrap  174  is affixed to exit end  172  of second compressed air line  170 . Second limb wrap  174  has an inside sheet  176  and an outside sheet  178  joined together with heat seals. For example, inside sheet  176  and outside sheet  178  may be joined with border seal  180 . In a preferred embodiment, border seal  180  is ¼ inches wide. Outside sheet  178  is preferably provided with hook member patch  182  having a plurality of hook fasteners. Hook member patch  182  is preferably 1½ inches wide. Inside sheet  176  is preferably provided with loop member patch  184  having a plurality of loop fasteners for selectively engaging the plurality of hook fasteners on hook member patch  182 . In a preferred embodiment, loop member patch member  184  is 1½ inches wide. 
         [0068]    Second limb wrap  174  defines a plurality of areas demarcated by seal lines. The plurality of areas includes first side area  188 , second side area  190  and inflatable area  192  between first side area  188  and second side area  190 . Inflatable area  192  defines three interconnected chambers  194   a ,  194   b , and  194   c  separated by seal lines. A stem  196  is connected to one of interconnected chambers  194   a ,  194   b , and  194   c . Stem  196  is provided for engaging exit end  172  of second compressed air line  170 . 
         [0069]    Referring now to  FIGS. 9 and 10 , third compressed air line  198  has an inlet end  199  affixed to third connector  30  ( FIGS. 1 ,  3 ,  5 ) for receiving compressed air from pump  16 , or for affixing to one of connectors  52 ,  54  of device  15 . Third compressed air line  198  has an exit end  200  for delivering compressed air. In a preferred embodiment, third compressed air line  198  has an inner diameter of ⅛ inch and length of 86 inches. 
         [0070]    Cold therapy shoulder wrap  202  has a chamber portion  204  having a fluid chamber side  206  for containing fluid  208 . Chamber portion  204  additionally has an air chamber side  210  for receiving compressed air from exit end  200  of third compressed air line  198 . Fluid chamber side  206  and air chamber side  210  are separated by a barrier member, not shown. Cold therapy shoulder wrap  202  additionally has first wrap extension  214  extending therefrom. First wrap extension  214  defines a plurality of dividing seals  216 . First wrap extension  214  preferably has a Velcro® compatible loop material  218  on fluid chamber side  206 . An interface between first wrap extension  214  and chamber portion  204  defines first strap seal  220 . In a preferred embodiment, first strap seal  220  has a width of ⅛ inch. 
         [0071]    Cold therapy shoulder wrap  202  additionally has a second wrap extension  222  extending therefrom. Second wrap extension  222  defines a plurality of divider seals  224 . In a preferred embodiment, second wrap extension  222  is 22 inches long by 6 inches wide. Preferably, second wrap extension  222  has a hook portion of a hook and loop fastener  226  affixed to fluid chamber side  206  proximate a terminal end of second wrap extension  222 . An interface between second wrap extension  222  and chamber portion  204  defines second strap seal  228 . Second strap seal  228  preferably has a width of ¼ inch. 
         [0072]    Cold therapy shoulder wrap  202  is preferably provided with third wrap extension  230  extending therefrom. An interface between third wrap extension  230  and chamber portion  204  defines third strap seal  232 . Third strap  232  preferably has a width of ¼ inch. Cold therapy shoulder wrap  202  is additionally preferably provided with tab extension  234 . Tab extension  234  is preferably provided with a hook portion of a hook and loop fastener  236  and is affixed to air chamber side  210  of tab extension  234 . Tab extension  234  preferably has dimensions of 2 inches by 3 inches. An interface between tab extension  234  and chamber body  204  defines strap seal  238 . Strap seal  238  preferably has a width of ¼ inch. 
         [0073]    Fluid chamber side  206  of chamber portion  204  is preferably provided with a plurality of seal barriers  240  for forming a plurality of interconnected chambers  242  for functioning as baffles for fluid  208 . In a preferred embodiment, seal barriers  240  have a width of ⅛ inch. 
         [0074]    In a preferred embodiment, fluid  208  is located in fluid chamber side  206  of chamber portion  204  of cold therapy shoulder wrap  202  is a gel comprising water, propylene glycol, polyacrylamide, and preservatives. The gel is available from Trann Technologies, Inc., 12526 US Highway 90, Mossy Head, Fla. 32434. 
         [0075]    Referring now to  FIGS. 11 and 12 , in a second embodiment of cold therapy system  10 , a cold therapy knee wrap  244  may be provided. Preferably, cold therapy knee wrap  244  has a chamber portion  246 . Chamber portion  246  has an air chamber side  248  for receiving compressed air from exit end  200  of third compressed air line  198  that may be affixed to ports  26 ,  28 ,  30  of device  13  or ports  52 ,  54  of device  15 . Chamber portion  246  also has a fluid chamber side  250  to contain fluid  208 . Air chamber side  248  and fluid chamber side  250  are separated by a divider member (not shown). Air chamber side  248  preferably defines a plurality of seals  252 . 
         [0076]    Fluid chamber side  250  of chamber portion  246  preferably defines a plurality of seals  254 . Fluid chamber side  250  is provided for receiving fluid  208 . First wrap extension  256  extends from chamber portion  246 . First wrap extension  256  preferably has dimensions of 11 inches by 5 inches. First wrap extension  256  defines a plurality of divider seals  258 . First wrap extension  256  preferably has a Velcro® compatible loop material  260  on fluid chamber side  250 . An interface between first wrap extension  256  and chamber portion  246  defines first strap seal  262 . 
         [0077]    Second wrap extension  264  extends from chamber portion  246  and has a preferred dimension of 11 inches by 5 inches. Second wrap extension  264  defines a plurality of divider seals  266 . Second wrap extension  264  preferably has a Velcro® compatible loop material  268  on fluid chamber side  250 . An interface between second wrap extension  264  and chamber portion  246  defines second strap seal  270 . 
         [0078]    First tab extension  272  extends from chamber portion  246 . An interface between first tab extension  272  and chamber portion  246  defines third strap seal  274 . First tab extension  272  has preferred dimensions of 5 inches by 6 inches. First tab extension  272  preferably has a hook portion of a hook and loop fastener  276  affixed to air chamber side  248 . 
         [0079]    Second tab extension  278  extends from chamber portion  246 . Second tab extension  278  has preferred dimensions of 5 inches by 6 inches. Second tab extension  278  is preferably provided with a hook portion of hook and loop fastener  280  affixed to air chamber side  248 . An interface between second tab extension  278  and chamber portion  246  defines a fourth strap seal. 
         [0080]    Air chamber side  248  of chamber portion  246  of cold therapy knee wrap  244  is preferably provided with interior seals  254  for forming a plurality of areas  284  into which compressed air is dispersed. Fluid chamber side  250  has a plurality of interior seals  254  that function as baffles to position fluid  208 . Angle connector  286  extends from air chamber side  248  of chamber portion  246  for connecting to exit end  200  of third compressed air line  198 . Angle connector  286  delivers compressed air to air chamber portion  246 . 
         [0081]    In use, device  13  of cold therapy system  10  operates as follows: 
         [0082]    In single limb cuff mode, first solenoid  32  is powered on and pump  16  pressurizes a limb cuff, e.g., first limb wrap  146 , to a desired pressure, e.g., 20 mmHg to 50 mmHg, preferably 50 mmHg. Pump  16  is then turned off to allow first limb wrap  146  to deflate. Pump  16  then powers on after a desired time interval, e.g., 60 seconds, to repeat. Although preferred ranges of inflation intervals are listed herein, inflation intervals may be changed in the software as desired, e.g., to accommodate wraps with larger bladders or to adjust cycle time via “rest period” variations. 
         [0083]    In double limb cuff mode, first solenoid  32  is powered on and pump  16  pressurizes a limb wrap, e.g., first limb wrap  146 , to a desired pressure, e.g., 50 mmHg, preferably 50 mmHg. Pump  16  is then turned off to allow the first limb wrap  146  to deflate. Solenoid  34  is then powered on after a desired time interval, e.g., 25 seconds. Pump  16  then pressurizes a second limb wrap  174  to a desired pressure, e.g., 20 mmHg to 50 mmHg, preferably 50 mmHg. Pump  16  is then turned off. Pump  16  is then powered on after a desired time interval, e.g., 25 seconds, to repeat the process. 
         [0084]    In auxiliary cuff only mode, solenoid  36  is powered on and pump  16  pressurizes an auxiliary cuff, e.g., cold therapy shoulder wrap  202  or cold therapy knee wrap  244 , to a desired pressure, e.g., 20 mmHg to 50 mmHg, preferably 50 mmHg. Preferably the maximum fill time is 60 seconds. Pump  16  is then turned off to allow joint wrap  202  or  244  to deflate. Pump  16  is then powered on after a desired time interval, e.g., 60 seconds, to repeat. 
         [0085]    In single limb+auxiliary cuff mode, solenoid  32  is powered on and pump  16  pressurizes a limb cuff, e.g., first limb wrap  146 , to a desired pressure, e.g., 50 mmHg, preferably 50 mmHg. Pump  16  is then turned off to allow first limb wrap  146  to deflate. Solenoid  36  is then powered on after a desired time interval, e.g., 25 seconds. Pump  16  then pressurizes the auxiliary cuff, e.g., cold therapy shoulder wrap  202  or cold therapy knee wrap  244 , to maintain a desired pressure, e.g., 20 mmHg to 50 mmHg, preferably 50 mmHg. Pump  16  is then turned off. After a desired time interval, e.g., 25 seconds, pump  16  is powered on to repeat the process. 
         [0086]    In double limb and auxiliary cuffs mode, solenoid  32  is powered on and pump  16  pressurizes first limb wrap  146  to a desired pressure, e.g., 50 mmHg, preferably 50 mmHg. Pump  16  is then turned off to allow first limb wrap  146  to deflate. Solenoid  34  is then powered on after a desired time interval, e.g., 15 seconds. Pump  16  then pressurizes second limb wrap  174  to a desired pressure, e.g., 20 mmHg to 50 mmHg, preferably 50 mmHg. Pump  16  is then turned off. Solenoid  36  is then powered on after a desired time interval, e.g., 15 seconds and pump  16  pressurizes an auxiliary cuff, e.g., cold therapy shoulder wrap  202  or cold therapy knee wrap  244 , to a desired pressure, e.g., 20 mmHg to 50 mmHg, preferably 50 mmHg. Pump  16  is turned then off to allow auxiliary wrap  202  or  244  to deflate. Pump  16  is then powered on after a desired time interval, e.g., 15 seconds, to repeat. 
         [0087]    Thus, the present invention is well adapted to carry out the objectives and attain the ends and advantages mentioned above as well as those inherent therein. While presently preferred embodiments have been described for purposes of this disclosure, numerous changes and modifications will be apparent to those of ordinary skill in the art. Such changes and modifications are encompassed within the spirit of this invention as defined by the claims.