Patent Publication Number: US-9901508-B2

Title: Therapy tool

Description:
CROSS REFERENCE TO RELATED APPLICATION 
     This application is a continuation of U.S. patent application Ser. No. 11/279,847, filed Apr. 14, 2006, now abandoned, and claims priority from U.S. Provisional Application Ser. No. 60/673,891 filed Apr. 18, 2005. Each of the above-referenced applications is expressly incorporated by reference herein its entirety. 
    
    
     FIELD OF THE INVENTION 
     The present invention relates generally to therapy tool and more particularly to a rolling tool for treating muscular, myofascial pain, and adhesions. The device of the present invention advantageously may be used for identifying trigger points and for providing trigger point therapy and myofascial release, although other uses are contemplated including treating general muscle soreness relief and treating adhesions and scar tissues to increase their elasticity and plasticity, as will be discussed below. 
     BACKGROUND OF THE INVENTION 
     Musculoskeletal evaluation and treatment applications have been used extensively in pain relief, massage therapy and chiropractic clinics. Different methods of application and different therapy tools have been experimented with and tried in an effort to find the most effective tool with which both the clinician and the patient could find and treat some of the most common and widespread causes of muscular and myofascial pain and dysfunction. 
     It is well documented in the literature that one of the primary and oftentimes overlooked causes of musculoskeletal pain syndromes are trigger points. A trigger point is a focal area of contracted muscle tissue which dramatically effects normal muscle function and physiology. In their book  Myofascial Pain and Dysfunction: The Trigger Point Manual  (1999) Drs. Travell and Simons present a very detailed description of the science and impact of trigger points and their effect on musculoskeletal pain and dysfunction. A trigger point is described as “a highly irritable localized spot of exquisite tenderness in a nodule in a palpable taut band of muscle tissue.” 
     Trigger points can develop and create dysfunction in any of the over two hundred pairs of muscles in the body. Travell and Simons have stated that trigger points are a component of up to 93 percent of the pain seen in pain clinics. 
     Trigger points can decrease the oxygenation to the involved muscle which will result not only in pain but also a lack of nutrients to the involved site. The restricted blood flow is believed due to abnormally high internal muscle pressure resulting from muscle bundle tightness and shortness. They can also cause peripheral nerve compression as they pass through the involved muscle resulting in tingling, burning, numbness and hyperesthesia. Taut muscle fibers will also decrease lymphatic drainage and may result in a pooling of the byproducts of normal muscle metabolism primarily lactic acid which will result in muscle soreness. Trigger points also can effect movement by keeping the effected muscle short and tight which will reduce range of motion and impose a functional ceiling on muscle performance. And, trigger points can maintain muscle spasms, they can prevent the muscles from relaxing causing them to fatigue quickly, recover slowly from exertion and performance, and contract abnormally when they are performing. It must always be remembered that there are no trigger points in healthy muscles. 
     Different treatment methods have been used for years in trigger point therapy and myofascial release. They range from different forms of manipulation and manual therapy as well as the use of various electro-stimulation devices and mechanical devices including probes and rollers. However, prior to the present invention, none of the currently available mechanical probes and rollers have been found to be particularly effective for detection and elimination of trigger points and therefore the relief from many myofascial pain syndromes. Currently available roller type instruments only roll the muscle and do not effectively penetrate or stretch the muscle or overlying fascia. And, while more probing instruments would get deep in the tissue, they rely on the skill of the clinician or individual to try to find the appropriate trigger point and accurately treat same. Another disadvantage is that probes do not affect the entire muscle. 
     Thus exists a need for a mechanical, easy to use instrument that will provide both superficial and deep pressure relief for effective myofascial release and also permit the user to identify the location of trigger points. 
     SUMMARY OF THE INVENTION 
     The foregoing and other disadvantages of the prior art are provided by a hand roller therapy device made in accordance with the present invention. The key to the present invention is in the wheel design itself. More particularly, I have found that the wheels must include spaced projections and that the size and shape of the spaced projections must be within a carefully controlled range. More particularly, I have found through empirical testing that size, shape and spacing of projections, and wheel dimension are important based on the specific myofascial muscular tissue or adhesion being treated. Thus, it is important to keep the roller wheels within a diameter of ¾-6 inches depending on the tissues to be addressed (preferably about 2.0 inches). The wheels should include 8 to 12 projections, preferably 8, evenly spaced around the wheel&#39;s periphery. The projections should have a height of approximately 0.250 to 0.400 inches, preferably about 0.3125 inches, and a width, at their widest point of about 0.200 to 0.283 inches, preferably about 0.280 inches. The projections should be generally flat at their outer surface, but have a rounded edge. In a preferred embodiment of the invention, several roller devices having varying wheel sizes and shapes may be provided as a kit. 
     Forming the massage roller wheel in accordance with the above unexpectedly provides the ability to both penetrate or stretch muscle and overlying fascia. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Further features and advantages of the present invention will be seen from the following detailed description, taken in conjunction with the accompanying drawings, wherein 
         FIG. 1  is a perspective view showing a combination probe and therapy device made in accordance with one embodiment of the invention; 
         FIG. 2  is a view similar to  FIG. 1  of a therapy device made in accordance with the present invention; 
         FIG. 3  is a view similar to  FIG. 1  of an alternative embodiment of therapy device made in accordance with the present invention; and 
         FIG. 4  is a cross-sectional view and  FIG. 5  a side elevational view of a single wheel made in accordance with the present invention. 
     
    
    
     DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS 
     Referring first to  FIGS. 1, 4 and 5 , there is shown a combination probe and therapy device  10  comprising an elongate rod  12  having an enlarged handle  14 . A round wheel  16  having a smooth peripheral edge formed of a hard plastic having a diameter of 2.0 inches is rotatably mounted adjacent one end of rod  12 . Preferable wheel  16  is rotatably mounted to rod  12  on ball bearings and is held in position on rod  12  by snap rings or retaining rings  15  which are snapped onto peripheral grooves  17  formed in the rod  12 . 
     The other end of the rod, i.e. opposite wheel  16 , carries mounted thereon a segmented wheel  18 . Referring also to  FIGS. 4 and 5 , wheel  18  is also formed of a hard plastic or rubber, and has eight projections  20  evenly spaced around the wheel. Projections  20  are about 0.750 inches at their widest point, and project 0.1325 inches from the core of roller  18 . Projections  20  are 0.283 inches wide at their widest point, and have a rounded taper or bevel  22  adjacent their outer surface  24 . 
     In use, the clinician grasps the therapy device  10  by handle  14  and rolls the round wheel  16  along the muscle to be evaluated or treated. By rolling wheel  16  along the muscles, the presence of trigger points and adhesions will be felt through the wheel and handle by to the user. Having then determined the location of trigger points and adhesions, the user may then roll the segmented roller back and forth across the trigger points and adhesions. Typically the trigger points and adhesions are released in 15-60 seconds. 
     Referring to  FIG. 2 , there is shown an alternative embodiment of a therapy device made in accordance with the present invention. The  FIG. 2  embodiment differs from  FIG. 1  in that there are a pair of handles  30  mounted to the outside of rod  32 . A pair of segmented wheels  34  similar to wheel  18  are rotatably mounted in the mid-section of rod  32 . Wheels  34  are spaced from one another 1.25-1.75 inches, preferably about 1.50 inches. 
     Yet another embodiment is shown in  FIG. 3 . The  FIG. 3  embodiment is similar to  FIG. 2 , except that there are four segmented wheels  40  mounted interiorly of the handles  42  on rod  44 . Wheels  40  are similar to roller  18 , and are spaced from one another 0.50-0.75 inches, preferably about 0.50 inches on center by spacers  41 . 
     The present invention provides many functions, advantages and benefits not achievable by prior art devices. For one, the therapy device of the present invention may be used both to detect and treat muscle trigger points and tight myofascial adhesions. This in turn increases range of motion and relieves pain. Vigorously rolling the therapy device along the muscles warms up the muscles by increasing circulation (hyperemia) thereby increasing oxygen-laden and nutrient rich blood flow to the muscles. The therapy device also actively stretches and passively exercises the muscles, while massaging the muscles and stretching the overly fascia. The therapy device can be used to relieve muscle spasm and tightness which inhibit normal muscle function and performance. The therapy device also increases flexibility, strength and endurance, improves muscle recovery, restoration and regeneration. The therapy device also quickly provides relief for back and muscle aches and pains, and can be used also to provide relief for tight, sore and tired feet and plantar fascitis as well as provide relief for repetitive motion injuries. Use of the therapy device in accordance with the present invention also increases circulation to hypovascular areas of the tendons and aids in healing and increases elasticity of adhesions and reduces pain. Most lesions, muscles spasms, etc. may be removed in as little as 15-60 seconds. A feature and advantage of the present invention is that the wheel designs permit penetration into the fascia and muscle in varying degrees depending on pressure applied. 
     While the therapy device of the present invention has been described as being used primarily by medical providers, the instrument also is designed for home use and in many cases may be self applied. 
     Various changes may be made from the foregoing without departing from the spirit and scope of the invention. For example, a floor mount may be provided for treatment of plantar fascitis and plantar fascial fatigue. And smaller versions of the wheels may be used over smaller tissues, e.g. tendons and post-surgical adhesions to aid in proper healing and reduction in scar tissue formation. The invention also may be used to promote lymphatic drainage. Still yet other changes are possible.