The shoulder joint is a complex system that includes a ball and socket-type joint formed of the humerus and scapula. The scapula forms a shallow pocket surrounded by muscles, tendons and connective tissue that support the humerus. Ordinarily, the humerus is suspended from the joint in an anatomically neutral position where the scapula is centered in its plane of motion and the humerus is inline (namely, parallel) with the spine, free of rotational forces.
The shoulder joint works in conjunction with the Cervical/Thoracic spine, ribs and torso due to the numerous shoulder muscle attachments about the upper body. This anatomy is also referred to as the Shoulder Girdle Complex. Due to the above described complexity, the shoulder joint is the most mobile multidirectional joint in the body. However, it is also the least stable complex. Consequently, when the shoulder joint is injured, its great mobility and minimal stability make the shoulder joint difficult to properly treat.
Unfortunately, injuries to the shoulder are not uncommon. When conservative care treatment does not suffice, shoulder injuries are treated with surgery. Recovery from the shoulder surgery is challenging because of the complex anatomy of the shoulder.
Following a shoulder injury or surgery, the patient is typically required to wear a sling to limit movement on the shoulder joint. Unfortunately, a conventional sling does not hold the arm in an anatomically neutral state. Additionally, conventional slings do not supply a means for applying thermal therapy.
Various conventional slings attempt to solve some of the above challenges in caring for shoulder injuries. For example, a conventional arm sling 10 (see, e.g., the Ultimate Arm Sling®, manufactured by Joslin Orthopedic Gear, Brisbane, Calif.) depicted in
Additionally, the singular strap 12 across the shoulder focuses the entire weight (W) of the arm onto the upper trapezius muscle and the brachial plexus often causing neurapraxia and/or scoliotic changes to the spine. This is painful and undesirable.
Additionally, the sling 10 does not limit lateral movement of the arm in the sense that the arm may rock like a pendulum. The arm, when placed in the sling, is bent. The weight of the arm is unevenly distributed, creating an off balance and pendulum effect. Gravity pulls on the hand causing the sling to rotationally slip across several planes. Constant repositioning is required to correct for the rotational slippage of the sling. This is undesirable and hinders recovery.
Sling 10 and other designs have attempted to eliminate slippage by running the strap from the forearm pouch completely around the torso, and attaching the strap to the ends of the pouch with an array of clips. The attachment, however, is complicated and inconvenient.
Additionally, slings require a base garment to be worn underneath the sling. After an injury and surgery, it is very difficult to put on a shirt, much more to put on a cumbersome sling with straps and clips. The slings cannot be worn without a base garment because the sling frequently slips and repositions itself, causing skin chaffing.
Others have attempted to overcome some of the above mentioned shortcomings. Descriptions of various slings, vests, and other arm supports can be found in U.S. Pat. Nos. 2,012,848; 2,344,844; 3,559,640; 4,601,285; 5,095,894; 5,792,083; 6,102,877; 6,406,449; 6,453,904; 6,595,936; 6,974,429; 6,770,044; 8,196,588; 8,733,365 and U.S. Patent Publication No. 2013/0317401.
However, the previous slings, vests, and arm supports do not overcome the above mentioned shortcomings. In addition to failing to overcome some of the above described shortcomings, some of the previous sling designs are specific to the left and right side. Some have prepositioned snaps, clasps, magnets or buttons which prevent size and position adjustment.
Accordingly, there is still a need for an improved apparatus to support the shoulder complex and humerus in a neutral position, to be freely and conveniently adjustable, non-size or side specific, evenly distribute the weight of the arm, and wearable as an undergarment or over garment as desired and the need for an easily applicable thermal therapy modality.
A medical apparatus for supporting the shoulder complex and humerus in a neutral position and distributing the weight of the supported arm about the shoulder girdle includes an upper body garment, a forearm sleeve adjustably fastened to the subclavicular region of the upper body garment, and an elongate elbow strap fastenable to the sleeve.
In embodiments, the upper body garment has an anterior portion, a posterior portion, a left shoulder portion and right shoulder portion, and an aperture for the neck between the left shoulder portion and the right shoulder portion. The garment may have a vest type shape and be made of soft dynamic material such as a hook and loop compatible fabric.
In embodiments, the forearm sleeve has a medial opening, a lateral opening, and a pocket extending therebetween to accommodate the forearm. In embodiments the forearm sleeve is attached to the garment high on the torso via a transverse attachment region on the rear surface of the sleeve. Preferably, the sleeve is attached just inferior to the clavicle and lateral of the midline.
In embodiments, the forearm sleeve has a trapezoid shape. In embodiments, the sides of the trapezoid are equal such that the sleeve is usable on either the left or right side.
In embodiments, the elongate elbow strap has a first end, second end, and elongate body therebetween. The first end and second end are removably mountable to the lateral opening of the forearm sleeve. The combination of the trapezoid pocket and the elbow stabilization strap serve to securely hold the arm, preventing lateral/posterior/rotational movement.
In embodiments, a weight distribution strap attaches to the garment at one or more superiorly disposed attachments points, and does not span, contact or loop around the neck. In embodiments, the weight distribution strap is adjustable and allows the patient to adjust the tension as needed as she changes position such as, for example, from sitting to standing, or from standing to laying herself in bed.
The medical apparatus holds the arm and shoulder complex in a comfortable anatomically neutral position conducive to healing.
In embodiments the garment includes a semi-tailored fit of dynamic (e.g., elastic) fabric that distributes the weight of the injured arm to the shoulder girdle and across the entire torso. This serves to eliminate neurapraxia and scoliotic problems associated with conventional or prior art devices, described above.
In embodiments, the medical apparatus fits the upper body or torso and includes an openable seam or zipper so that it may be conveniently worn over clothing.
Additional advantages of various embodiments of the present invention include wearing the medical arm support apparatus itself as a garment. This is very useful in the acute recovery phase following surgery or injury. Wearing the medical apparatus itself as a garment is especially helpful for women who do not have the option of wearing a sling without a shirt because putting on a shirt may be too painful to do after surgery or an injury.
In embodiments, a medical apparatus, assembly, or system to support the forearm, and secure the shoulder complex and humerus in a neutral position comprises any one or more of the structures described herein.
In embodiments, a therapeutic method to facilitate recovery following shoulder surgery comprises supporting the forearm in a horizontal orientation; and securing the shoulder complex and the humerus in a neutral position wherein the supporting and securing are performed by any one or more of the steps or instructions described herein. In embodiments, the method includes the step of delivering a thermal therapy to shoulder. The thermal therapy may be delivered as described herein.
A medical kit to support the arm of an individual following shoulder injury or surgery comprises an apparatus as described herein; and a set of instructions to wear the apparatus and to fasten a forearm pocket to an anterior region of the garment, inferior of a clavicle of the individual, and lateral of midline such that the humerus and shoulder complex are secured in an anatomically neutral position.
An advantage of embodiments of the invention is to immobilize the arm in all planes in a neutral position via the transverse forearm sleeve and the elbow stabilization strap. The transverse forearm sleeve also reduces gravitational pressure on the glenohumeral joint enhancing recovery.
The description, objects and advantages of the present invention will become apparent from the detailed description to follow, together with the accompanying drawings.
Before the present invention is described in detail, it is to be understood that this invention is not limited to particular variations set forth herein as various changes or modifications may be made to the invention described and equivalents may be substituted without departing from the spirit and scope of the invention. As will be apparent to those of skill in the art upon reading this disclosure, each of the individual embodiments described and illustrated herein has discrete components and features which may be readily separated from or combined with the features of any of the other several embodiments without departing from the scope or spirit of the present invention. In addition, many modifications may be made to adapt a particular situation, material, composition of matter, process, process act(s) or step(s) to the objective(s), spirit or scope of the present invention. All such modifications are intended to be within the scope of the claims made herein.
Methods recited herein may be carried out in any order of the recited events which is logically possible, as well as the recited order of events. Furthermore, where a range of values is provided, it is understood that every intervening value, between the upper and lower limit of that range and any other stated or intervening value in that stated range is encompassed within the invention. Also, it is contemplated that any optional feature of the inventive variations described may be set forth and claimed independently, or in combination with any one or more of the features described herein.
All existing subject matter mentioned herein (e.g., publications, patents, patent applications and hardware) is incorporated by reference herein in its entirety except insofar as the subject matter may conflict with that of the present invention (in which case what is present herein shall prevail).
Unless the context dictates otherwise, reference to “she” includes “he” and visa versa. Reference to “patient” includes the user, client, injured individual, or another individual intended to wear the apparatus described herein.
Reference to a singular item includes the possibility that there are plural of the same items present. More specifically, as used herein and in the appended claims, the singular forms “a,” “an,” “said” and “the” include plural referents unless the context clearly dictates otherwise. It is further noted that the claims may be drafted to exclude any optional element. As such, this statement is intended to serve as antecedent basis for use of such exclusive terminology as “solely,” “only” and the like in connection with the recitation of claim elements, or use of a “negative” limitation.
In embodiments, the sleeve 120 is attached to upper body garment in a sleeve attachment zone or region 111 which preferably is located in the vicinity just inferior of the clavicle, and lateral of the midline (Y).
A weight distribution strap 140 further supports the arm. As described herein, the components of the apparatus operate together to distribute the weight of the arm away from the patient's neck, and to hold the shoulder complex and humerus in a body natural or neutral state. Adjustment may be made to the arm support 100 to modify position, tension, elevation so as to place the humerus inline with the spine, and to eliminate internal rotation and horizontal adduction on the glenohumeral joint.
The garment 110 is preferably sized to snugly fit on the upper torso of a patient. The garment includes an aperture or opening 112 for the neck, and two openings 114, 116 for the arms. The garment shown in
An openable seam 118 is shown serving to facilitate taking the garment on and off. In embodiments, the seam is closable with a zipper. However, the invention is not so limited and other means for closing the seam include without limitation buttons, snaps, hook and loop fasteners, or another suitable means to close the seam.
The arm support may be made from a variety of materials. Exemplary materials for the garment include fabrics made of cotton, nylon, and polyesters. In an embodiment, the anterior or front portion of the garment is made of nylon fabric under the trade name Veltex® brand and suitable for use with hook fasteners such as Velcro® Brand Hook fasteners.
As described herein, an elongate elbow strap 130 may be adjustably fastened to the forearm sleeve and around the elbow (or distal end of the humerus) to secure the arm therein.
The arm support apparatus shown in
Weight distribution strap 140 is shown having buckles 141A, 141B for adjusting the length of the strap from the shoulder attachment points to the sleeve. Adjusting the length of the strap serves to redistribute the weight on the shoulders arising from supporting the arm.
With reference to
The sleeve may be formed of the same materials as the garment. Upper transverse panel 128 preferably includes a strip 129 of hook fastener on the rearward side to adjustably mount the sleeve on the garment 110.
Adjustment may be made to the arm support to modify position, tension, elevation to place the humerus inline with the spine, to eliminate internal rotation and horizontal adduction on the glenohumeral joint. For example, attachment of the various components may be performed using hook and loop fasteners, magnets, buttons, snaps, zippers, or other types of fasteners. In embodiments, stitches and adhesives may also be employed to connect or join components.
In embodiments, the arm support apparatus is constructed such that an angle (beta) between the humerus and the spine is less than or equal to 30 degrees, and more preferably less than or equal to 25 degrees. In preferred embodiments, the device is constructed so as to place the angle (β) at an angle less than or equal to 20 degrees. Consequently, the shoulder complex and humerus are held in an anatomically neutral orientation.
Additionally, as shown the first and second attachment portions of the weight distribution strap 140 is off the neck, and off the back. A margin (M) or space from the neck is shown which serves to protect the neck from the injuries described above.
Optionally, but not necessarily, the sack 200 may be closeable with closing means including fasteners, pins, zippers, buttons and other fastening means.
Exemplary materials for the sack include materials described herein, or in some embodiments, designated regions of thermal insulating materials to reduce heat loss. In embodiments, the sack applies directional thermal activity, and has regions of efficient heat transfer, and other regions of heat insulation. In embodiments, the sack or pouch has a face and back, wherein the face is made of a material that efficiently transfers thermal energy, and the back is made of a material that prohibits transfer for thermal energy. Example materials for the back include thermal insulating materials including thermal batting such as, for example, Insul-Bright and Insul-Shine both offered by The Warm Company (Lynwood, Wash.). Additionally, the sides and top of the pouch 200 may also be made of the heat insulating materials.
The thermal pouch and garment combination shown in
Many modifications and variations of the present invention are possible in light of the above teachings. It is therefore to be understood that within the scope of the appended claims the invention may be practiced otherwise than as specifically described.
This application claims priority to and the benefit of Provisional Application No. 62/280,059, filed Jan. 18, 2016, and entitled “ANATOMICALLY NEUTRAL ARM SUPPORT APPARATUS.”
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