Patent Publication Number: US-7901327-B2

Title: Device and method for cervical curvature restoration

Description:
BACKGROUND OF THE INVENTION 
     The present invention relates to patient cervical curvature restoration, and more particularly, the present invention relates to a neck exercising device or rehabilitation tool and a method of restoring and/or maintaining proper cervical spine curvature. 
     Cervical curve reversal is a physical condition that is accompanied by forward displacement of the head thereby requiring the muscles of the neck and upper back to contract progressively tighter as cervical kyphosis worsens. This condition is one of the leading causes of patient symptoms and degenerative spinal changes. The increased muscular force required to hold the displaced head increases spinal compression, which leads to advancing disk and joint deterioration. A host of patient symptoms are related, including neck pain, headaches, TMJ pain, radiculopathy, myofacial syndromes, upper back pain and fatigue, occipital neuralgia, balance problems or in-coordination, and emotional stress. 
     Various devices for exercising and/or supporting the neck are known. For example, see U.S. Pat. No.: 5,498,218 issued to Proctor et al.; U.S. Pat. No. 2,791,999 issued to Bustamante; U.S. Pat. No. 4,789,154 issued to Mattox; D.447,779 S issued to Munger; U.S. Pat. No. 5,295,949 issued to Hathaway; U.S. Pat. No. 5,681,248 issued to Vani; U.S. Pat. No. 5,989,167 issued to Manley et al.; U.S. Pat. No. 4,219,193 issued to Newman; U.S. Pat. No. 7,189,192 B2 issued to Edgeton; U.S. Pat. No. 4,988,093 issued to Forrest, Sr. et al.; U.S. Pat. No. 5,162,027 issued to Robinson; U.S. Pat. Nos. 5,713,841 and 5,569,176 issued to Graham; U.S. Pat. No. 5,824,013 issued to Allen; U.S. Pat. No. 6,788,968 B2 issued to Pettibon; U.S. Pat. No. 7,104,926 B2 issued to Carlson; U.S. Pat. No. 6,939,269 B2 issued to Makofsky; U.S. Pat. No. 6,179,747 B1 issued to Kelley; U.S. Pat. No. 5,509,869 issued to Miller; U.S. Pat. No. 5,116,359 issued to Moore; U.S. Pat. No. 5,199,940 issued to Morris et al.; and U.S. Pat. No. 7,150,719 B2 issued to Meyer. Also see U.S. Patent Application Publications Nos. 2006/0052219 A1 of Roberts et al., 2007/0191187 A1 of Reynolds, and 2007/0021784 of Hurd. 
     While the neck exercising devices and methods disclosed in the above referenced patents and published applications may function in a satisfactory manner for their intended purpose, there remains a need for an improved neck rehabilitation tool and exercise device for use in correcting lordosis, for restoring proper cervical spine curvature, and for strengthening the muscles of the neck and upper back. The device and method of restoration should enable a patient to achieve permanent and lasting curve correction. Preferably, the device should be affordable, available for daily use, and easy to use. 
     SUMMARY OF THE INVENTION 
     The present invention provides a neck rehabilitation device for exercising the muscles of a person&#39;s neck and upper back. The device has a rear neck-engaging assembly positionable at least partially about the person&#39;s neck for engaging a rear side of the person&#39;s neck. The rear neck-engaging assembly includes an elastic strap for extending and being stretched about the rear side of the person&#39;s neck to exert a forward-directed force on the person&#39;s neck. The assembly also includes a resilient compressible member providing resistance to compression during exercises involving the muscles of the person&#39;s neck and upper back while the elastic strap is stretched about the person&#39;s neck and applies a forward-directed force thereto. 
     According to another aspect of the present invention, a method of cervical curve restoration of a person&#39;s neck is provided. The method includes stretching a reversed cervical curve forward and simultaneously exercising the muscles of the person&#39;s neck and upper back. The simultaneous stretching and exercising steps are preferably performed with a portable, hand-held device having an elastic strap for applying a force to stretch the reversed cervical curve forward and a resilient compressible member providing resistance for exercising the muscles of the neck and upper back. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The features and advantages of the present invention should become apparent from the following description when taken in conjunction with the accompanying drawings, in which: 
         FIG. 1  is an example of a lateral cervical spine of a person having a cervical curve reversal condition; 
         FIG. 2  is an example of a lateral cervical spine of a person with improved cervical curvature relative to that of  FIG. 1 ; 
         FIG. 3  is a perspective view of a rehabilitation tool or exercising device according to the present invention; 
         FIG. 4  is a side elevational view of the device of  FIG. 3  positioned about the neck of a person in a starting position according to the present invention; and 
         FIGS. 5-7  are side and front elevational views demonstrating neck exercises performed with the device of  FIG. 3  according to the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     The neck rehabilitation tool/exercising device  10  according to the present invention is used by a patient to restore cervical curvature. By way of example, and not by way of limitation, the lateral cervical spine of  FIG. 1  shows a spine of a patient having a cervical curve reversal condition with negative or kyphotic 11° of spinal curve. A person with such a condition will likely be plagued with chronic neck and upper back pain and occasional headaches. 
     In comparison, the lateral cervical spine x-ray of  FIG. 2  shows a spine of a patient with a positive 4° of spinal curve which is a significant improvement from the condition illustrated in  FIG. 1 . Regular and repeated exercise performed with the device  10  of the present invention enables a patient to not only improve cervical curvature, but also restore proper, smooth, and perfect appearing lordotic cervical curve. 
     The device  10  of the present invention enables the patient to stretch the reversed cervical curve forward and then, with the cervical spine held in this proper curved position, to work the major muscles of the neck and upper back to strengthen the muscles so that the muscles ultimately hold the correction. It is not the vertebrae that are resistant to change of cervical curvature; rather, it is the soft tissue of the disks, joints, ligaments and muscles that must be worked to enable permanent and lasting curve correction. 
     A contemplated embodiment of the device of the present invention is the portable, lightweight, manually-operated, hand-held device  10  illustrated in  FIG. 3 . This version of the present invention is easy to use thereby enabling daily in-home exercising, stretching, and strengthening of the neck that can be accomplished without assistance from other people or other more sophisticated equipment. As an example, about ten minutes of daily exercise with the device  10  should be sufficient to gradually restore proper cervical spine curvature over a period of about six to twelve months. 
     As best shown in  FIG. 3 , the device  10  includes a laterally spaced-apart pair of elongate handles,  12  and  14 , that each has a proximal end  16  providing a hand grip,  18  and  20 , and a distal end  22  interconnecting to a rear neck-engaging assembly  24 . The handles,  12  and  14 , illustrated in the drawings are substantially rigid; however, the handles can also be provided in the form of inelastic or elastic straps, webbing or the like, and a single handle can be used in place of the pair of handles. 
     In use, the rear neck-engaging assembly  24  extends behind and partially around the neck, head and/or shoulders of the patient while the proximal ends  16  of the handles,  12  and  14 , extend in front of the patient for ready gripping by the patient. For example, see  FIG. 4 . 
     The rear neck-engaging assembly  24  includes a centrally-disposed, flexible, elastic strap or band  26  and a resilient compressible member  28  spaced behind the elastic strap  26 . In the illustrated embodiment, the compressible member  28  is provided by a pair of bowed, substantially-inelastic, upper and lower supports,  30  and  32 , interconnected by a pair of resilient, resistance coils,  34  and  36 . Other types and arrangements of compressible members can also be utilized such as those made of resilient foam or some other compressible shape-memorizing material or arrangement of components, such as leafs springs, helical springs, rubber, or the like at any location along the length of the supports. 
     The elastic strap  26  extends between and in a transverse direction relative to the elongate handles,  12  and  14 , adjacent the distal end  22  of the handles,  12  and  14 . The elastic strap  26  is designed to be positioned across the back of the neck of the patient at about a mid-height of the neck while the pair of handles,  12  and  14 , extends forwardly of the patient enabling ready and comfortable gripping by the patient&#39;s hands, for instance, as illustrated in  FIG. 4 . 
     The resistance coils,  34  and  36 , of the illustrated embodiment are located adjacent the distal end  22  of the handles,  12  and  14 , and adjacent opposite ends of the elastic strap  26 . The coils,  34  and  36 , provide a juncture connecting the opposite ends of the upper and lower supports,  30  and  32 . Thus, the supports,  30  and  32 , extend a spaced distance behind the elastic strap  26  and on an opposite side of the elastic strap  26  relative to the handles,  12  and  14 . In the illustrated embodiment, the coils  34  and  26  connect directly to the handles,  12  and  14 , and to the elastic strap  26 ; however, other means and arrangements for connecting the handles and straps to the device  10  can be utilized. 
     Preferably, the upper and lower supports,  30  and  32 , provide generally curved, or arcuate, neck, head or shoulder engaging surfaces as each extends continuously from coil  34  to coil  36 . The upper support  30  is adapted to engage and extend across a region of a patient&#39;s neck and/or head at about the base of the patient&#39;s skull. The lower support  32  is adapted to engage and extend across a region of the patient&#39;s neck and/or shoulders at about the base of the neck and/or top of the shoulders. See  FIG. 4  for an example of this positioning of the supports,  30  and  32 , relative to the patient&#39;s neck. The supports,  30  and  32 , can include padding  38  along their lengths where the supports,  30  and  32 , are expected to engage a patient&#39;s neck, head, or shoulders. 
     In use, the grips,  18  and  20 , of the elongate handles,  12  and  14 , are grasped by the patient, and the rear assembly  24  is positioned behind the neck of the patient. The elongate handles,  12  and  14 , are disposed substantially horizontal with the proximal ends  16  extending forward of the patient. The patient pulls the handles,  12  and  14 , in a forward direction with a light amount of force, typically about a few pounds of pressure (for instance, about four pounds of forward pressure). This amount of pressure is required to stretch the elastic strap  26  about the mid portion of the patient&#39;s neck. Ultimately, the upper and lower supports,  30  and  32 , engage a rear side of the patient&#39;s neck, head and/or shoulders adjacent the top and base of the neck. In this position (see  FIG. 4 ), further forward movement of the handles,  12  and  14 , relative to the patient&#39;s neck is prevented and further expansion of the elastic strap  26  is prevented. Accordingly, the elastic strap  26  can be designed to readily apply only a desired amount of pressure to the rear of the patient&#39;s neck and this pressure cannot be exceeded due to the engagement of the supports,  30  and  32 , with the patient&#39;s neck, head and/or shoulders. 
     When positioned in the above described fashion, the elastic strap  26  is designed, for instance, to apply about four pounds of forward pressure to the mid-cervical region of the neck. See  FIG. 4 . Thus, the cervical curve is stretched forward, even from a reverse cervical curve condition, and is held in this position as long as the patient applies forward pull on the handles,  12  and  14 , of the device  10 . This forward stretched position is maintained throughout the exercises described below. 
     In this position, the patient can use the device  10 , more specifically the supports,  30  and  32 , and the resistance coils,  34  and  36 , to perform a series of neck rearward, lateral, or rotational neck extension and retraction exercises to strengthen the major muscles of the neck and upper back. The combination of simultaneous cervical spine forward stretching via the elastic strap  26  and neck exercises of the muscles in the neck and upper back against resistance of the coils,  34  and  36 , enables gradual reshaping and strengthening of the patient&#39;s neck. Thus, through daily and/or routine periodic exercising, cervical curve restoration can be achieved within a few months and can be maintained. 
     Some examples of exercises are shown in  FIGS. 5-7 . For instance, with the mid-cervical spine stretched in the forward position by the elastic strap  26  of the device  10  due to forward pull applied to the handles,  12  and  14 , the patient can retract their neck like a turtle to move their head downwardly (see arrow “A” in  FIG. 4 ) so as to at least partially compress the upper and lower supports,  30  and  32 , against the resistance of the coils,  34  and  36 . In addition, the patient can bend their neck backward (see  FIGS. 6 and 7 ) or laterally toward one of their shoulders (see  FIG. 5 ) to at least partially compress the upper and lower supports,  30  and  32 , against the resistance of the coils,  34  and  36 . The resistance coils  34  and  36  can be designed to provide a desired amount of resistance, for instance, about five to six pounds of resistance, during these exercises. The patient can hold the above stated retracted and/or neck bent positions for a predetermined time before returning the neck to a normal starting position (as shown in  FIG. 4 ), or the patient can slowly rotate their head for about 180° from shoulder-to-shoulder during these exercises (for instance, see arrow “B” in  FIG. 7 ). All of the above can be repeated a number of times for a number of sets. 
     The method of restoring cervical curvature includes using device  10  to perform some or all of the above discussed neck exercises periodically over a period of time, such as daily exercises for about ten minutes a day performed over a course of several months. The muscles of the neck and upper back are gradually strengthened during the exercises that are performed while forward pressure is applied on the back of the cervical spine to properly position the cervical spine during the exercises. As the muscles gradually strengthen, they are ultimately able to maintain proper cervical curvature. Exercises can be continued to permanently maintain proper curvature. 
     Various changes can be made to the structure of the device  10  and the method of using the device. For an example, any means for providing resistance during the neck extension, retraction, and/or rotation exercises can be used in place of the coil springs and pair of supports illustrated in the drawings. Further, the upper and lower supports can be replaced with a single shape-memory material that can be compressed and resiliently expanded, such as foam or other materials. Further, one or more strap-type handles can be used in place of the pair of elongate rigid handles. Still further, the amount of force and/or resistance provided by the elastic strap and resilient compressible member can be adjusted and/or designed as desired. 
     While preferred rehabilitation and exercise devices, exercises, and methods of restoring and maintaining proper cervical curvature have been described in detail, various modifications, alterations, and changes may be made without departing from the spirit and scope of the device and method according to the present invention as defined in the appended claims.