Not Applicable.
1. Field of the Invention
This invention relates to spinal orthoses and more particularly to a thoracolumbosacral orthosis, a lumbosacral orthosis, a cervical-thoracic-lumbar-sacral orthosis, and a cervical orthosis.
2. Description of the Related Art
Spine bracing is used in a variety of acute and chronic conditions. It has been estimated that 1,688,000 people in United States wear a back brace. Typically, two types of back brace are used: (1) custom and (2) off-the-shelf, which are generally plastic or canvas. A custom back brace costs about $1,500, while an off-the-shelf back brace costs about $400. Virtually every spine surgeon in the United States uses back braces for the operative and deformity diagnoses, and it is estimated that many non-orthopedists (i.e., family practitioners, general practitioners, and internists who see people with back pain) use them.
Conditions treated with back braces include: low back pain (etiology unknown); thoracolumbar fracture; adolescent idiopathic scoliosis; adult (degenerative) scoliosis; spondylolysis, disc herniation; spondylolisthesis; and post-surgical immobilization (e.g., fracture, fusion for degenerative conditions, fusion for deformity). The efficacy of bracing of the lumbar spine is thought to be due to a complex interaction of several factors including but not limited to motion reduction, increased intra-abdominal pressure, and pressure feedback on musculature.
The three major reasons for prescribing spinal orthoses are: immobilization following spinal surgery, correction of spinal deformities, and alleviation of low back pain. As noted above, many types of spinal orthoses exist, ranging from simple, inexpensive cloth lumbosacral supports to expensive, custom-fitted thoracolumbosacral orthoses (TLSOs) with thigh extenders. Some example thoracolumbosacral orthoses are found in U.S. Pat. Nos. 5,718,670 and 5,362,304.
While the ability of orthoses to restrict individual intervertebral motions has been questioned (see Benzel et al., “Post-operative stabilization of a post-traumatic thoracic and lumbar spine: Interview of concepts and orthotic techniques.”, Journal of Spinal Disorders 2:47-51, 1989; and Axelsson et al., “Effect of lumbar orthosis on intervertebral mobility. A roentgen stereophotogrammetric analysis.”, Spine 17:678-681, 1992), recent research using video fluoroscopy to evaluate intervertebral motion has confirmed the stabilizing effect of a rigid custom-fitted TLSO (see Vander Kooi et al., “Lumbar Spine Stabilization with a Thoracolumbosacral Orthosis: Evaluation with Video Fluoroscopy.” Spine 29(1):100-104, 2004). In contrast, it has been reported that a lumbosacral corset is unable to immobilize the L3-S1 levels (see Miller et al., “Lower spine mobility in external immobilization in the normal and pathologic condition.”, Orthopedic Review 21(6): 753-757, 1992). Although custom-fitted TLSOs have been shown to be superior, they can be quite expensive.
Ideally, a back brace must meet several design criteria. A back brace should accommodate varying anthropometrics such as anterior/posterior (A/P) & medial/lateral (M/L) dimensions and an obese abdomen. A back brace should accommodate gender differences including breasts and hips. A back brace should have the ability to resist flexion moments, to add a thigh extender, and to accommodate spinal deformity. The ability to use the back brace as an adolescent scoliosis brace is also preferred.
Thus, there is a need for a thoracolumbosacral orthosis, a lumbosacral orthosis, a cervical-thoracic-lumbar-sacral orthosis, and a cervical collar orthosis that meet these design criteria and provide the stability of a custom fitted orthosis while also offering the cost effectiveness of an off-the-shelf brace.
In a first aspect, the invention is directed to a thoracolumbosacral orthosis with sagittal-coronal control. The thoracolumbosacral orthosis is a modular segmented spinal system and has two rigid plastic shells. The anterior shelf extends from the pelvis to the sternum. The posterior shell extends from the pelvis (proximal sacrum) and terminates just inferior to the scapular spine. The thoracolumbosacral orthosis restricts gross trunk motion in the sagittal and coronal planes. Lateral strength is provided by overlapping plastic and stabilizing closures including straps and closures. The thoracolumbosacral orthosis is prefabricated and includes fitting and adjustment systems.
The thoracolumbosacral orthosis uses rigid anterior and posterior shells lined with inflatable air bladders that provide support and increased stability. The rigid shells can be manufactured in various sizes to accommodate the range of patient anthropometrics. The inflatable air bladders conform to the patient's anatomical topography and provide the stabilization required. The thoracolumbosacral orthosis of the invention is superior to the current methods because the rigid shells can be mass produced at a low expense while the inflatable air bladders provide the customizing effect which will yield the required stability.
In one example form, the thoracolumbosacral orthosis includes (i) an anterior shell dimensioned for covering an anterior portion of a patient's torso such that the anterior shell extends from approximately the patient's pelvis to approximately the patient's sternum, (ii) a posterior shell dimensioned for covering a posterior portion of the patient's torso such that the posterior shell extends from approximately the patient's pelvis and terminates inferior to approximately the patient's scapular spine, and (iii) a fastening system for securing the anterior shell in covering relationship to the anterior portion of the patient's torso and for securing the posterior shell in covering relationship to the posterior portion of the patient's torso.
This example thoracolumbosacral orthosis includes a pair of axillary anterior shell pressure pads secured to opposed upper lateral sections of the interior surface of the anterior shell, a sternal anterior shell pressure pad secured to an upper intermediate section of the interior surface of the anterior shell, a pair of rib anterior shell pressure pads secured to opposed intermediate lateral sections of the interior surface of the anterior shell, a pair of anterior superior iliac spine anterior shell pressure pads secured to opposed lower second lateral sections of the interior surface of the anterior shell, a pair of axillary posterior shell pressure pads secured to opposed upper lateral sections of the interior surface of the posterior shell, a scapular posterior shell pressure pad secured to an upper intermediate section of the interior surface of the posterior shell, a pair of rib posterior shell pressure pads secured to opposed intermediate lateral sections of the interior surface of the posterior shell, a lumbar posterior shell pressure pad secured to a lower intermediate section of the interior surface of the posterior shell, and a pair of spaced apart paraspinal posterior shell pressure pads secured to a central intermediate section of the interior surface of the posterior shell below the scapular posterior shell pressure pad. The pressure pads are preferably removable inflatable air bladders such that one or any number more than one of the pressure pads may be used to apply pressure to a location on the patient's anterior torso and to apply pressure to a location on the patient's posterior torso when the anterior shell and the posterior shell are secured to the patient's torso.
In another example form, the thoracolumbosacral orthosis includes an anterior thigh support, a posterior thigh support secured to and extending downward from the posterior shell, and a fastening system for securing the anterior thigh support in covering relationship to an anterior portion of the patient's thigh and for securing the posterior thigh support in covering relationship to a posterior portion of the patient's thigh. The posterior thigh support may be secured to the posterior shell with a hinge. In one form, a pair of laterally spaced anterior thigh support pressure pads extend away from an interior surface of the anterior thigh support, and a pair of laterally spaced posterior thigh support pressure pads extend away from an interior surface of the posterior thigh support.
In a second aspect, the present invention provides a lumbosacral orthosis that uses rigid anterior and posterior shells lined with inflatable air bladders that provide support and increased stability. The rigid shells can be manufactured in various sizes to accommodate the range of patient anthropometrics. The inflatable air bladders conform to the patient's anatomical topography and provide the stabilization required. The lumbosacral orthosis of the invention is superior to the current methods because the rigid shells can be mass produced at a low expense while the inflatable air bladders provide the customizing effect which will yield the required stability.
In one example form, the lumbosacral orthosis includes (i) an anterior shell dimensioned for covering an anterior portion of a patient's torso such that the anterior shell extends from approximately the patient's pelvis to approximately a lower portion of the sternum, i.e. xiphoid process, (ii) a posterior shell dimensioned for covering a posterior portion of the patient's torso such that the posterior shell extends from approximately the patient's pelvis and terminates at the inferior portion of the scapula (at about the same level as the patient's xiphoid process), and (iii) a fastening system for securing the anterior shell in covering relationship to the anterior portion of the patient's torso and for securing the posterior shell in covering relationship to the posterior portion of the patient's torso.
This example lumbosacral orthosis includes a pair of rib anterior shell pressure pads secured to opposed intermediate lateral sections of the interior surface of the anterior shell, a pair of anterior superior iliac spine anterior shell pressure pads secured to opposed lower second lateral sections of the interior surface of the anterior shell, a pair of rib posterior shell pressure pads secured to opposed intermediate lateral sections of the interior surface of the posterior shell, a lumbar posterior shell pressure pad secured to a lower intermediate section of the interior surface of the posterior shell, and a pair of spaced apart paraspinal posterior shell pressure pads secured to a central intermediate section of the interior surface of the posterior shell. The pressure pads are preferably removable inflatable air bladders such that one or any number more than one of the pressure pads may be used to apply pressure to a location on the patient's anterior torso and to apply pressure to a location on the patient's posterior torso when the anterior shell and the posterior shell are secured to the patient's torso.
In a third aspect, the invention provides a cervical-thoracic-lumbar-sacral orthosis. This orthosis includes the anterior shell, the posterior shell, and any number of the pressure pads of the thoracolumbosacral orthosis of the first aspect of the invention. The cervical-thoracic-lumbar-sacral orthosis further includes a mandibular support secured to and extending upward from the anterior shell, and at least one mandibular support pressure pad extending away from an interior surface of the mandibular support. The cervical-thoracic-lumbar-sacral orthosis further includes an occipital support secured to and extending upward from the posterior shell, and at least one occipital support pressure pad extending away from an interior surface of the occipital support. In one example form, the cervical-thoracic-lumbar-sacral orthosis includes a pair of laterally spaced apart mandibular support pressure pads extending away from the interior surface of the mandibular support, and a pair of laterally spaced apart occipital support pressure pads extending away from the interior surface of the occipital support; The pressure pads are preferably removable inflatable air bladders such that one or any number more than one of the pressure pads may be used to apply pressure to a location on the patient's mandible and to apply pressure to a location on the patient's occipital region when the anterior shell and the posterior shell are secured to the patient.
In a fourth aspect, the invention provides a cervical collar orthosis including (i) an anterior shell having a mandibular support region dimensioned for contacting a patient's mandible and having a clavicular support region dimensioned for contacting the patient's collar bones, (ii) a posterior shell having an occipital support region dimensioned for contacting the patient's occipital bones and having a lower posterior support region dimensioned for contacting the patient's scapular spine or the posterior portion of the patient's neck, and (iii) a fastening system for securing the anterior shell in covering relationship to an anterior portion of the patient's neck region and for securing the posterior shell in covering relationship to a posterior portion of the patient's neck region.
In one example form, the cervical collar orthosis has a pair of laterally spaced mandibular support pressure pads extending away from the interior surface of the anterior shell at the mandibular support region of the anterior shell, a pair of laterally spaced clavicular support pressure pads extending away from the interior surface of the anterior shell at the clavicular support region of the anterior shell, a pair of laterally spaced occipital support pressure pads extending away from the interior surface of the posterior shell at the occipital support region of the posterior shell, and a pair of laterally spaced lower posterior support pressure pads extending away from the interior surface of the posterior shell at the lower posterior support region of the posterior shell. The pressure pads are preferably removable inflatable air bladders such that one or any number more than one of the pressure pads may be used to apply pressure to a location on the patient's mandible, collar bones, occipital region, posterior neck, and/or scapular region when the anterior shell and the posterior shell are secured to the patient.
These and other features, aspects, and advantages of the present invention will become better understood upon consideration of the following detailed description, drawings, and appended claims.
Like reference numerals will be used to refer to like parts from Figure to Figure in the following description of the drawings.
Referring first to
The anterior shell 20 has a top edge 21, a first side edge 22, a second side edge 23, and a bottom edge 24. The posterior shell 30 has a top edge 31, a first side edge 32, a second side edge 33, and a bottom edge 34. Any of the top edge 21, the first side edge 22, the second side edge 23, and the bottom edge 24 of the anterior shell 20 may flair outwardly from the torso to change the stiffness and/or reduce chaffing on the torso. Likewise, any of the top edge 31, the first side edge 32, the second side edge 33, and the bottom edge 34 of the posterior shell 30 may flair outwardly from the torso to change the stiffness and/or reduce chaffing on the torso.
The anterior shell 20 and the posterior shell 30 are formed of a rigid material, and the stiffness of the anterior shell 20 and the posterior shell 30 may be changed by changing the type and/or thickness of materials. Preferably, each shell is formed of a plastic material such as a molded polyethylene or polypropylene. Preferably, at least five different sizes of the shells may be provided, for example, extra small, small, medium, large and extra large, or optionally, further sizes in-between may be provided, to accommodate the torsos of individuals of different sizes including variations in height and girth. Thus, multiple sizes for the anterior shell 20 and the posterior shell 30 are provided, and the sizes for the anterior shell 20 and the posterior shell 30 are interchangeable.
The anterior shell 20 and the posterior shell 30 are secured on opposite sides of the patient's torso by a fastening system 40 interconnecting the anterior shell 20 and the posterior shell 30. While many different types of fastening systems may be employed to secure the shells about the torso, Velcro™-type straps are preferred. One end of each strap is secured to one of the shells. The straps extend to mating portions of the Velcro™ fastener secured on the opposite shell. Alternative fastening systems include strap/buckle combinations and elastic materials.
Turning now to
Turning now to
In the preferred embodiment of the thoracolumbosacral orthosis 10, the anterior pressure pads each comprise an inflatable air bladder that is attached to the interior surface 25 of the anterior shell 20. Likewise, the posterior pressure pads each comprise an inflatable air bladder that is attached to the interior surface 35 of the posterior shell 30. While the anterior pressure pads and the posterior pressure pads each preferably comprise an inflatable air bladder, the invention is not limited to this type of anterior pressure pad and posterior pressure pad. While in the preferred embodiment, the anterior pressure pads and the posterior pressure pads are inflatable air bladders, the anterior pressure pads and the posterior pressure pads may also comprise liquid-filled sacs, gel-filled sacs or foam-type (e.g., polyurethane) pads.
Various means for attaching the anterior pressure pads to the interior surface 25 of the anterior shell 20 and for attaching the posterior pressure pads to the interior surface 35 of the posterior shell 30 can be provided. In one example, the means for attaching the anterior pressure pads to the interior surface 25 of the anterior shell 20 comprise (i) male Velcro™-type straps that are attached to or in-molded into the interior surface 25 of the anterior shell 20 at the desired locations for the anterior pressure pads and (ii) female Velcro™-type straps that are attached to each anterior pressure pad such that the anterior pressure pads may be attached to the interior surface 25 of the anterior shell 20 at the desired location by way of the typical Velcro™-type fastening action. In this example configuration, each anterior pressure pad can be readily attached or removed from the interior surface 25 of the anterior shell 20 depending on the individual patient's needs. Therefore, each of the anterior pressure pads shown in
The thoracolumbosacral orthosis 10 including inflatable air bladders for the anterior pressure pads and the posterior pressure pads may be custom fitted to a patient's torso as follows. First, a size for the anterior shell 20 and a size for the posterior shell 30 are separately selected based on the patient's anatomy.
Next, a fixation plan is determined. When the thoracolumbosacral orthosis 10 is to be used for the treatment of back pain or for post-surgical treatment, a three-point fixation in the sagittal plane including (i) ASIS bilateral fixation, (ii) sternal fixation, and (iii) transscapular-interscapular and/or lumbar fixation is typically selected. This type of three-point fixation can be implemented in the thoracolumbosacral orthosis 10 by: (1) inflating the air bladders comprising the pair of anterior superior iliac spine (ASIS) pads 58L and 58R on the interior surface 25 of the anterior shell 20 such that the pair of anterior superior iliac spine (ASIS) pads 58L and 58R extends away from the interior surface 25 to create pressure pads that extends inwardly toward the patient's torso when the thoracolumbosacral orthosis 10 is placed on the patient; (2) inflating the air bladder comprising the sternal-clavicular pad 52 on the interior surface 25 of the anterior shell 20 such that the sternal-clavicular pad 52 extends away from the interior surface 25 to create a pressure pad that extends inwardly toward the patient's torso; (3) inflatirig the air bladders comprising the transscapular-interscapular pad 62 and/or the lumbar pad 69 on the interior surface 35 of the posterior shell 30 such that the transscapular-interscapular pad 62 and/or the lumbar pad 69 extends away from the interior surface 35 to create a pressure pad that extends inwardly toward the patient's torso. Of course, any other anterior or posterior pressure pads may be inflated as needed under the patient treatment program. For example, the paraspinal pads 68L and 68R may be inflated. The anterior shell 20 and the posterior shell 30 are then secured to the patient's torso as shown in
When the thoracolumbosacral orthosis 10 is to be used for the treatment of scoliosis, a three-point fixation in the coronal plane including (i) unilateral iliac crest fixation, (ii) axillary fixation, and (iii) contralateral apex fixation is typically selected. This type of three-point fixation can be implemented in the thoracolumbosacral orthosis 10 by: (1) inflating one of the air bladders comprising the pair of anterior superior iliac spine (ASIS) pads (e.g., 58L) on the interior surface 25 of the anterior shell 20 such that the anterior superior iliac spine (ASIS) pad (e.g., 58L) extends away from the interior surface 25 to a create pressure pad that extend inwardly toward the patient's torso when the thoracolumbosacral orthosis 10 is placed on the patient; (2) inflating one of the air bladders comprising the pair of axillary pads (e.g. 54L) on the interior surface 25 of the anterior shell 20 such that the axillary pad (e.g., 54L) extends away from the interior surface 25; (3) inflating one of the air bladders comprising the pair of axillary pads (e.g., 64L) on the interior surface 35 of the posterior shell 30 such that the axillary pad (e.g., 64L) extends away from the interior surface 35 to a create a pressure pad; (4) inflating one of the air bladders comprising the pair of rib pads (e.g. 56R) on the interior surface 25 of the anterior shell 20 such that the rib pad (e.g., 56R) extends away from the interior surface 25; (4) inflating one of the air bladders comprising the pair of rib pads (e.g. 66R) on the interior surface 35 of the posterior shell 30 such that the rib pad (e.g., 66R) extends away from the interior surface 25; and (5) inflating the air bladder comprising the lumber pad 69 on the interior surface 35 of the posterior shell 30 such that the lumbar pad 69 extends away from the interior surface 35 to create a pressure pad. Of course, any other anterior or posterior pressure pads may be inflated as needed under the patient treatment program.
The anterior shell 20 and the posterior shell 30 are then secured to the patient's torso as shown in
Referring now to
The cervical-thoracic-lumbar-sacral orthosis 410 further includes an arcuate rigid mandibular support 70 secured to the anterior shell 20 by way of a support arm 72 and fasteners 74 such as screws. The mandibular support 70 typically is formed from a plastic material such as a molded polyethylene or polypropylene, and the support arm 72 and fasteners 74 are typically metallic. The mandibular support 70 applies pressure to the mandible bones by way of a pair of laterally spaced apart mandibular support pressure pads 75L and 75R (shown in
The cervical-thoracic-lumbar-sacral orthosis 410 further includes a rigid occipital support 80 secured to the posterior shell 30 by way of a support arm 82 and fasteners 84 such as screws. The occipital support 80 typically is formed from a plastic material such as a molded polyethylene or polypropylene, and the support arm 82 and fasteners 84 are typically metallic. The occipital support 80 applies pressure to the occipital bones by way of a pair of laterally spaced apart occipital support pressure pads 85L and 85R (shown in
In the preferred embodiment of the cervical-thoracic-lumbar-sacral orthosis 410, the mandibular support pressure pads 75L and 75R each comprise an inflatable air bladder that is attached to the interior surface 71 of the mandibular support 70. Likewise, the occipital support pressure pads 85L and 85R each comprise an inflatable air bladder that is attached to the interior surface 81 of the occipital support 80. The mandibular support pressure pads 75L and 75R and the occipital support pressure pads 85L and 85R may also comprise liquid-filled sacs, gel-filled sacs or foam-type (e.g., polyurethane) pads.
Various means for attaching the mandibular support pressure pads 75L and 75R to the interior surface 71 of the mandibular support 70 can be provided. In one example, the means for attaching comprise (i) male Velcro™-type straps that are attached to or in-molded into the interior surface 71 of the mandibular support 70 at the desired locations for the mandibular support pressure pads 75L and 75R and (ii) female Velcro™-type straps that are attached to each of the mandibular support pressure pads 75L and 75R such that the mandibular support pressure pads 75L and 75R may be attached to the interior surface 71 of the mandibular support 70 at the desired location by way of the typical Velcro™-type fastening action. In this example configuration, each mandibular support pressure pad 75L and 75R can be readily attached or removed from the interior surface 71 of the mandibular support 70 depending on the individual patient's needs. It can be appreciated that the same means for attaching the mandibular support pressure pads 75L and 75R to the interior surface 71 of the mandibular support 70 would be advantageous for attaching the occipital support pressure pads 85L and 85R to the interior surface 81 of the occipital support 80. Thus, each of the occipital support pressure pads 85L and 85R can be readily attached or removed from the interior surface 81 of the occipital support 80 depending on the individual patient's needs.
The cervical-thoracic-lumbar-sacral orthosis 410 helps stabilize or support the pelvis, back, neck and head. It is used to support weakened or damaged areas of the spine and to stabilize and control unwanted curvatures of the spine (scoliosis). Patients who use prior art cervical-thoracic-lumbar-sacral devices sometimes get decubital ulcers at the base of their skull due to the prolonged pressure applied to the skin. The air bladder concept provides stability while reducing the pressures, and thus reduces complications associated with application of a cervical-thoracic-lumbar-sacral orthosis. The mandibular support pressure pads 75L and 75R and the occipital support pressure pads 85L and 85R are arranged bilaterally. The mandibular support pressure pads 75L and 75R and the occipital support pressure pads 85L and 85R apply pressure on the mandible and occipital bones. The mandibular support pressure pads 75L and 75R may include an option to be deflated while the subject is eating so that they can chew.
Turning now to
Looking at
Various means for attaching the anterior thigh support pressure pads 93L and 93R to the interior surface 95 of the anterior thigh support 90 can be provided. In one example, the means for attaching comprise (i) male Velcro™-type straps that are attached to or in-molded into the interior surface 95 of the anterior thigh support 90 at the desired locations and (ii) female Velcro™-type straps that are attached to each of the anterior thigh support pressure pads 93L and 93R such that the anterior thigh support pressure pads 93L and 93R may be attached to the interior surface 95 of the anterior thigh support 90 at the desired location by way of the typical Velcro™-type fastening action. It can be appreciated that the same means for attaching the anterior thigh support pressure pads 93L and 93R to the interior surface 95 of the anterior thigh support 90 would be advantageous for attaching the posterior thigh support pressure pads 97L and 97R to the interior surface 99 of the posterior thigh support 96.
Referring now to
Looking at
Looking at
Various means for attaching the mandibular support pressure pads 328L and 328R and the clavicular support pressure pads 329L and 329R to the interior surface 327 of the anterior support shell 320 can be provided. In one example, the means for attaching comprise (i) male Velcro™-type straps that are attached to or in-molded into the interior surface 327 of the anterior support shell 320 at the desired locations and (ii) female Velcro™-type straps that are attached to each of the mandibular support pressure pads 328L and 328R and the clavicular support pressure pads 329L and 329R such that the mandibular support pressure pads 328L and 328R and the clavicular support pressure pads 329L and 329R may be attached to the interior surface 327 of the anterior support shell 320 at the desired location by way of the typical Velcro™-type fastening action. It can be appreciated that the same means for attaching would be advantageous for attaching the occipital support pressure pads 338L and 338R and the lower posterior support pressure pads 339L and 339R to the interior surface 337 of the posterior support shell 330.
Turning to
The anterior shell 120 has a top edge 121, a first side edge 122, a second side edge 123, and a bottom edge 124. The posterior shell 130 has a top edge 131, a first side edge 132, a second side edge 133, and a bottom edge 134. Any of the top edge 121, the first side edge 122, the second side edge 123, and the bottom edge 124 of the anterior shell 120 may flair outwardly from the torso to change the stiffness and/or reduce chaffing on the torso. Likewise, any of the top edge 131, the first side edge 132, the second side edge 133, and the bottom edge 134 of the posterior shell 130 may flair outwardly from the torso to change the stiffness and/or reduce chaffing on the torso.
The anterior shell 120 and the posterior shell 130 are formed of a rigid material, and the stiffness of the anterior shell 120 and the posterior shell 130 may be changed by changing the type and/or thickness of materials. Preferably, each shell is formed of a plastic material such as a molded polyethylene or polypropylene. Preferably, at least five different sizes of the shells may be provided, for example, extra small, small, medium, large and extra large, or optionally, further sizes in-between may be provided, to accommodate the torsos of individuals of different sizes including variations in height and girth. Thus, multiple sizes for the anterior shell 120 and the posterior shell 130 are provided, and the sizes for the anterior shell 120 and the posterior shell 130 are interchangeable.
The anterior shell 120 and the posterior shell 130 are secured on opposite sides of the patient's torso by a fastening system 140 interconnecting the anterior shell 120 and the posterior shell 130. While many different types of fastening systems may be employed to secure the shells about the torso, Velcro™-type straps are preferred. One end of each strap is secured to one of the shells. The straps extend to mating portions of the Velcro™ fastener secured on the opposite shell. Alternative fastening systems include strap/buckle combinations and elastic materials.
Turning now to
Turning now to
In the preferred embodiment of the lumbosacral orthosis 110, the anterior pressure pads each comprise an inflatable air bladder that is attached to the interior surface 125 of the anterior shell 120. Likewise, the posterior pressure pads each comprise an inflatable air bladder that is attached to the interior surface 135 of the posterior shell 130. While the anterior pressure pads and the posterior pressure pads each preferably comprise an inflatable air bladder, the invention is not limited to this type of anterior pressure pad and posterior pressure pad. While in the preferred embodiment, the anterior pressure pads and the posterior pressure pads are inflatable air bladders, the anterior pressure pads and the posterior pressure pads may also comprise liquid-filled sacs, gel-filled sacs or foam-type (e.g., polyurethane) pads.
Various means for attaching the anterior pressure pads to the interior surface 125 of the anterior shell 120 and for attaching the posterior pressure pads to the interior surface 135 of the posterior shell 130 can be provided. In one example, the means for attaching the anterior pressure pads to the interior surface 125 of the anterior shell 120 comprise (i) male Velcro™-type straps that are attached to or in-molded into the interior surface 125 of the anterior shell 120 at the desired locations for the anterior pressure pads and (ii) female Velcro™-type straps that are attached to each anterior pressure pad such that the anterior pressure pads may be attached to the interior surface 125 of the anterior shell 120 at the desired location by way of the typical Velcro™-type fastening action. In this example configuration, each anterior pressure pad can be readily attached or removed from the interior surface 125 of the anterior shell 120 depending on the individual patient's needs. Therefore, each of the anterior pressure pads shown in
The orthoses according to the invention have many advantages. For example, the inflated air bladders minimize body contact and create natural air flow paths between a patient's torso and the anterior and posterior shells. As a result, the orthoses according to the invention have a more comfortable “airy” feel compared to known orthoses. The use of inflatable air bladders also allows for control over pressure on the patient's torso, mandible bones and occipital bones. For instance, an air bladder may be inflated to a smaller size for a lower pressure on the patient's body or may be inflated to a larger size for a greater pressure on the patient's body. Also, because any of the air bladders may be selected for inflation (or removed completely), the same orthosis may be used to treat different conditions (e.g., back pain or scoliosis) which require different pressure points on the patient's torso. Furthermore, the orthoses are superior to current devices because the rigid shell can be mass produced at a low expense while the air bladders provide the customizing effect which will yield the required stability.
Although the present invention has been described in considerable detail with reference to certain embodiments, one skilled in the art will appreciate that the present invention can be practiced by other than the described embodiments, which have been presented for purposes of illustration and not of limitation. For example, the described orthosis is suitable for use as a lumbosacral orthosis. Therefore, the scope of the appended claims should not be limited to the description of the embodiments contained herein.
The invention relates to spinal orthoses that may be used for, among other things, immobilization following spinal surgery, correction of spinal deformities, and alleviation of low back pain.
This application claims priority from U.S. Provisional Patent Application No. 60/578,459 filed Jun. 9, 2004.
Filing Document | Filing Date | Country | Kind | 371c Date |
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PCT/US2005/020401 | 6/9/2005 | WO | 00 | 10/2/2008 |
Number | Date | Country | |
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60578459 | Jun 2004 | US |