Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
  • A61B6/04—Positioning of patients; Tiltable beds or the like
  • A61B6/0407—Supports, e.g. tables or beds, for the body or parts of the body
  • A61B6/0421—Supports, e.g. tables or beds, for the body or parts of the body with immobilising means
  • A61B6/0428—Patient cradles
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B5/00—Measuring for diagnostic purposes; Identification of persons
  • A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves 
  • A61B5/055—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves  involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
  • A61B6/04—Positioning of patients; Tiltable beds or the like
  • A61B6/0407—Supports, e.g. tables or beds, for the body or parts of the body
  • A61B6/0421—Supports, e.g. tables or beds, for the body or parts of the body with immobilising means
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
  • A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
  • A61F5/37—Restraining devices for the body or for body parts, e.g. slings; Restraining shirts
  • A61F5/3769—Restraining devices for the body or for body parts, e.g. slings; Restraining shirts for attaching the body to beds, wheel-chairs or the like
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
  • A61G1/00—Stretchers
  • A61G1/04—Parts, details or accessories, e.g. head-, foot-, or like rests specially adapted for stretchers
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
  • A61B2562/16—Details of sensor housings or probes; Details of structural supports for sensors
  • A61B2562/17—Comprising radiolucent components
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
  • A61B6/04—Positioning of patients; Tiltable beds or the like
  • A61B6/0407—Supports, e.g. tables or beds, for the body or parts of the body
  • A61B6/0442—Supports, e.g. tables or beds, for the body or parts of the body made of non-metallic materials
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
  • A61B6/04—Positioning of patients; Tiltable beds or the like
  • A61B6/0492—Positioning of patients; Tiltable beds or the like using markers or indicia for aiding patient positioning
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
  • A61G2210/00—Devices for specific treatment or diagnosis
  • A61G2210/50—Devices for specific treatment or diagnosis for radiography

Definitions

• One or more embodiments of the invention generally relate to medical equipment.
• the invention relates to a rigid anatomical positioning device.
• the visualization of the vertebrae during radiography procedures such as, but not limited to, X-Ray, fluoroscopy, computed tomography (CT), etc. must be correct.
• a subject's shoulders obscure the lateral imaging of the cervical vertebrae.
• This radiographic visualization is optimized via the temporary caudal (towards the feet) migration of the shoulders of the immobilized patient, preferably without interference with the stabilization of the head and neck.
• Traditional means currently employed by clinicians to achieve correct positioning for cervical visualization typically involve overt positioning and manipulation of the patient's head and neck during live radiography or the positioning and manipulation of the patient's arms and shoulders. There are concomitant risks to the immobilized structures of the head and neck when positioning these structures. Generally, practitioners are concerned about the risk of aggravating any existing injuries.
• Cervical spine injuries are the most commonly missed severe injuries and can have serious implications for the patient and the physician. Approximately 5-10% of unconscious patients who present to the Emergency Room as the result of a motor vehicle accident or fall have a major injury to the cervical spine. Well more than half of catastrophic injuries in sports are cervical spine injuries. Cervical spine injuries can be disastrous and cause an estimated 6000 deaths and 5000 new cases of quadriplegia in the U.S. annually.
• the normal anatomy of the cervical spine consists of seven cervical vertebrae separated by intervertebral disks and joined by a complex network of ligaments. These ligaments keep individual bony elements behaving as a single unit. Cervical spine injuries are best classified according to several mechanisms of injury. These include flexion, flexion-rotation, extension, extension-rotation, vertical compression, lateral flexion, and imprecisely understood mechanisms that may result in odontoid fractures and atlanto-occipital dislocation.
• Cervical spine radiographs are almost routine in many emergency departments, yet cervical spine radiographs have limitations. It is believed that, approximately 85-90 percent of cervical spine injuries are evident in the radiographic lateral view, making it the most useful view from a clinical standpoint.
• a technically acceptable lateral view typically shows all seven vertebral bodies and the cervicothoracic junction, the C7-TI interspace, allowing visualization of the alignment of C7 and TI.
• up to 20 percent of fractures are believed to be missed on plain radiographs. It is believed to that the most common reason for a missed or overlooked cervical spine fracture, subluxation or dislocation injury is a cervical spine radiographic series that is technically
• Figures 1 A and IB are side perspective views of exemplary patient positioning devices for improved lateral imaging of the cervical vertebral structure of a patient with suspected head or neck injuries in use on a patient transport backboard, in accordance with an embodiment of the present invention.
• Figure 1 A shows the positioning devices in an engaged position
• Figure IB shows the positioning devices in a released position
• Figure 2 is an exploded view of the internal components of an exemplary rail guided shuttle, in accordance with an embodiment of the present invention.
• an apparatus in one embodiment includes a first patient positioning device including a rigid puller comprising a first end being operable for engaging a patient's shoulder area.
• a support member is joined proximate a second end of the rigid puller where a longitudinal axis of the support member is approximately perpendicular to a plane containing the rigid puller.
• the first patient positioning device includes a first rail and a variable positioning assembly that is movably joined to the support member to clamp the rigid puller at an adjusted distance from the variable positioning assembly.
• the variable positioning assembly is movably joined to the first rail to clamp the variable positioning assembly at an adjusted distance along a length of the first rail.
• the first patient positioning device further includes a second rail and a rail guided shuttle that is movably joined to the second rail and operable to be secured at a position along the second rail.
• the guided shuttle is joined to the first rail where the first rail is approximately perpendicular to the second rail.
• the first patient positioning device also includes a clamping mechanism joined to the second rail and being operable to secure the second rail parallel to a flat structure positioned below the patient where the rigid puller is operable for being positioned to engage the patient's shoulder area, proximal to the first patient positioning device, and to be pulled to and secured at a position where the patient's shoulder area has been caudally migrated.
• the rigid puller is further operable for engaging the patient's acromioclavicular joint and caudally migrating the
• the first end of the rigid puller comprises an arch.
• the rigid puller further comprises a thickened edge along an inner curve of the arch.
• the rigid puller further comprises a radiolucent material.
• the variable positioning assembly is further operable to clamp the rigid puller at an adjusted angle about the longitudinal axis.
• the rail guided shuttle further comprises a braking mechanism being operable to secure the rail guided shuttle at a position along the second rail.
• the braking mechanism further comprises a trigger to release the rail guided shuttle from a secured position.
• the rigid puller is further operable to caudally migrate the patient's shoulder area to facilitate lateral radiographic visualization of the patient's cervical vertebral structures without moving the patient.
• Still another embodiment further comprises a second patient positioning device comprising a mirror image of the first patient positioning device. The second patient positioning device is joined to the flat structure where the second patient positioning device is operable for engaging the patient's other shoulder area distal to the first patient positioning device.
• an apparatus in another embodiment, includes a first patient positioning device including a rigid puller comprising a generally straight portion joined to an end of an arm of an arch on a first end of the straight portion, the arch being operable for engaging a patient's shoulder area within the arch.
• the rigid puller further includes a radiolucent material.
• a support member is joined proximate a second end of the rigid puller where a longitudinal axis of the support member is approximately perpendicular to a plane containing the rigid puller.
• the first patient positioning device further includes a first rail and a variable positioning assembly comprising a first clamping mechanism and a second clamping mechanism.
• the first clamping mechanism is movably joined to the support member to clamp the rigid puller at an adjusted distance from the variable positioning assembly and at an adjusted angle about the longitudinal axis.
• the second clamp is movably joined to the first rail to clamp the variable positioning assembly at an adjusted distance along a length of the first rail.
• the first patient positioning device further includes a second rail and a rail guided shuttle comprising a braking mechanism.
• the rail guided shuttle is movably joined to the second rail where the breaking mechanism is operable to enable the guided shuttle to be moved along a length of the second rail and to be secured at a position along the second rail.
• the guided shuttle is join to the first rail where the first rail is approximately perpendicular to the second rail.
• the first patient positioning device also includes a clamping mechanism joined to the second rail and being operable to secure the second rail parallel to a flat structure positioned below and parallel to a coronal plane of the patient where the rigid puller is operable for being positioned to engage the patient's shoulder area, proximal to the first patient positioning device, and to be clamped in position, and the rail guided shuttle is operable to be moved to pull the rigid puller and to be secured at a position where the patient's shoulder area has been caudally migrated.
• the rigid puller is further operable for engaging the patient's acromioclavicular joint and caudally migrating the acromioclavicular joint.
• the rigid puller further comprises a thickened edge along an inner curve of the arch.
• the braking mechanism further comprises a trigger to release the rail guided shuttle from a secured position.
• the clamping mechanism is further operable for securing to a patient transport structure.
• the rigid puller is further operable to caudally migrate the patient's shoulder area to facilitate lateral radiographic visualization of the patient's cervical vertebral structures without moving the patient.
• Still another embodiment further includes a second patient positioning device comprising a mirror image of the first patient positioning device. The second patient positioning device is joined to the flat structure where the second patient positioning device is operable for engaging the patient's other shoulder area distal to the first patient positioning device.
• a method for using the apparatus includes the steps of joining the clamping mechanism of the first patient positioning device to a flat structure positioned below a patient where the clamping mechanism is near a midsection of the patient.
• a height and width positions of the rigid puller is adjusted to engage a shoulder area of the patient proximal to the first patient positioning device.
• the height is adjusted by vertical movement of the variable positioning device on the first rail.
• the width is adjusted by lateral movement of the support member in the variable positioning device.
• the rigid puller is clamped at the adjusted height and width.
• the patient's shoulder area is migrated caudally by moving the rail guided shuttle caudally along the second rail.
• the rail guided shuttle is secured at a position along the second rail where the caudal migration by the rigid puller facilitates lateral radiographic visualization of the patient's cervical vertebral structures.
• the step of adjusting further comprises engaging the patient's acromioclavicular joint in the shoulder area to migrate the acromioclavicular joint.
• Yet another embodiment further includes the step of joining a clamping mechanism of a second patient positioning device to the flat structure where the second patient positioning device comprises a mirror image of the first patient positioning device, and the second patient positioning device is operable for engaging the patient's shoulder area distal to the first patient positioning device.
• an apparatus which includes a puller member, the puller member including an engagement portion being configured for engaging a patient's neck/shoulder area and applying a pulling force thereupon.
• a support member is provided in this embodiment that has a first portion at a first end of the support member and a second portion at a second end of the support member. The first support member portion is joined to the pulling member at a location away from where the engagement portion of the pulling member contacts the patient during normal use. Also, in this configuration a longitudinal axis of the first support member portion forms an off-axis relationship to a longitudinal axis of the pulling member. The first support member portion and the joining thereto being configured to be at least operational to enable the pulling member to adjustably maintain a substantially fixed vertical elevation that aligns the engagement portion of the pulling member to effectively engage the patient's
• the second support member portion being configured with a variable shuttle member that is adjustably joined to the guide member for adjusting the removable joining position of the support member along a length of a guide member.
• This guide member being configured to have a substantially parallel orientation relative to a longitudinal axis of the engagement portion of the pulling member.
• a joining mechanism configured to removably fix the guide member to a structure positioned below the patient such that the pulling member is operable for being positioned relative to the structure and effectively engage the patient's neck/shoulder area so as to enable the caudally migration of the patient's neck/shoulder(s).
• a puller member that has an engagement portion being configured for engaging a patient's neck/shoulder area and applying a pulling force thereupon.
• a support member is provided in this embodiment that has a first portion at a first end of the support member and a second portion at a second end of the support member. The first support member portion is joined to the pulling member at a location away from where the engagement portion of the pulling member contacts the patient during normal use. Also, in this configuration a longitudinal axis of the first support member portion forms an off-axis relationship to a longitudinal axis of the pulling member.
• the first support member portion and the joining thereto being configured to be at least operational to enable the pulling member to adjustably maintain a substantially fixed vertical elevation that aligns the engagement portion of the pulling member to effectively engage the patient's neck/shoulder area; and, the second support member portion being configured with a variable shuttle member that is adjustably joined to the guide member for adjusting the removable joining position of the support member along a length of a guide member.
• This guide member being configured to have a substantially parallel orientation relative to a longitudinal axis of the engagement portion of the pulling member.
• a joining mechanism configured to removably fix the guide member to a structure positioned below the patient such that the pulling member is operable for being positioned relative to the structure and effectively engage the patient's neck/shoulder area so as to enable the caudally migration of the patient's neck/shoulder(s).
• a reference to “a step” or “a means” is a reference to one or more steps or means and may include sub-steps and subservient means. All conjunctions used are to be understood in the most inclusive sense possible. Thus, the word “or” should be understood as having the definition of a logical “or” rather than that of a logical “exclusive or” unless the context clearly necessitates otherwise. Structures described herein are to be understood also to refer to functional equivalents of such structures. Language that may be construed to express approximation should be so understood unless the context clearly dictates otherwise. [0029] Unless defined otherwise, all technical and scientific terms used herein have the same meanings as commonly understood by one of ordinary skill in the art to which this invention belongs.
• references to "one embodiment,” “an embodiment,” “example embodiment,” “various embodiments,” etc., may indicate that the embodiment(s) of the invention so described may include a particular feature, structure, or characteristic, but not every embodiment necessarily includes the particular feature, structure, or characteristic. Further, repeated use of the phrase "in one
• a commercial implementation in accordance with the spirit and teachings of the present invention may be configured according to the needs of the particular application, whereby any aspect(s), feature(s), function(s), result(s), component(s), approach(es), or step(s) of the teachings related to any described embodiment of the present invention may be suitably omitted, included, adapted, mixed and matched, or improved and/or optimized by those skilled in the art, using their average skills and known techniques, to achieve the desired implementation that addresses the needs of the particular application.
• Applicant's prior inventions include, without limitation, rigid radiographic shoulder presses that include embodiments that can provide means for the distal migration of the shoulder. Those embodiment may work with or without specificity to an optimal point of migration.
• the acromioclavicular joint is an optimal point of migration.
• Some of those prior means may appear to be suitable for the migration of the shoulders in the emergency setting; however, with respect to practical application in the emergency situation, none of these means are compatible for usage without removal of or appreciable disturbance to either immobilization or the means of immobilization of the head and neck.
• usage would require the removal of the neck immobilization or overt interference in the fitting of a harness to the patient. Since this interference to immobilization or the means of immobilization carries significant risk of patient morbidity, paralysis, and at the very least, complication of injuries, the actual usage of said devices in the emergency diagnostic setting is not suitable.
• Applicant believes that many conventional techniques may not be effective in migrating the acromioclavicular joint, which Applicant believes is the actual structure that typically causes the dense artifact that obscures the lateral imaging of the cervical vertebrae. Applicant believes that much of the prior art does not lock into place during use, thereby often necessitating that staff members are exposed to cumulative radiographic tissue load with each usage as they hold the means in place. At least some embodiments of the present invention are useful to provide safe and effective means for correct radiographic imaging for diagnosis of suspected injury of the cervical vertebrae.
• One aspect of the preferred embodiment of the present invention to provide means for positioning the subject's shoulders during radiography that migrate the shoulders caudally out of the line of sight of the lateral image of the cervical vertebrae.
• An embodiment of the present invention and at least one variation thereof provide a patient positioning device comprising a set of rigid radiolucent pullers designed to adjust and to fit ergonomically at a cervical trauma patient's acromioclavicular joint and adjacent anatomic structures when positioned with the head and neck of the patient immobilized in lateral restraints upon a patient transport backboard.
• Many embodiments of the present invention are arranged to facilitate lateral migration of the patient's anatomic structures for purposes of optimized lateral radiography without interference with the immobilization of the patient's head and neck and without interference with the means of immobilization of the patient's head and neck.
• Many embodiments of the present invention of the present invention may be used in various medical fields such as, but not limited to, the fields of radiology, surgery and emergency medical diagnosis and in various different settings including, but not be limited to, the hospital setting, the medical transport setting, the battlefield triage setting, the sports arena and pool setting, the maritime setting, the aviation setting, and any other setting where the immobilization and transport of patients with suspected injuries to the head and neck call for the swift radiographic diagnosis of said injuries.
• Figures 1A and IB are side perspective views of exemplary patient positioning devices
• FIG. 1A shows positioning devices 100 in an engaged position
• Figure IB shows positioning devices 100 in a released position
• positioning devices 100 comprise rigid pullers 103 affixed to variable positioning assemblies 104 mounted to a set of rail guided shuttles 105 equipped with trigger actuated braking systems.
• Each positioning device 100 comprises a universal locking clamp 106 in order to attach to patient transport backboard 101 near the area of the midsection of patient 102.
• positioning devices 100 are variably positionable and automatically lockable without interference with immobilization means 125 fitted around the head and neck of patient 102, which are typical in emergency situations, and without interference with the immobilized anatomy of patient 102.
• Positioning devices 100 preferably provide caudal migration of the acromioclavicular joints and adjacent structures in order to provide optimized lateral radiographic visualization of the cervical vertebral structures.
• Rigid pullers 103 comprise flat arms 107 each terminating in variable thickness arches
• pullers 103 are preferably constructed of radiolucent carbon fiber; however, in alternative embodiments, the pullers may be constructed of various different durable radiolucent and non radiolucent materials including, but not limited to, PEEK, carbon, thermoplastic resins, polypropylene, polyethylene, polyamides, polyphenylene sulfides, high performance polymers, polyaryletherketones, carbon fiber reinforced thermoplastics, polycarbonates, beryllium, glass fiber reinforced acrylic, etc.
• the pullers may be made of non-radiolucent materials such as, but not limited to, various plastics, foam, metal, etc.
• pullers in alternative embodiments may be made of non ferromagnetic materials as well as ferromagnetic materials, although the use of ferromagnetic materials will preclude all usage within the MRI Environment due to the inherent dangers and risks attendant with the extremely high magnetic fields generated within the MRI array.
• suitable construction methods may be used to form pullers in different embodiments including, but not limited to, extrusion, compression molding, injection molding, or whatever means suit the particular radiolucent or non-radiolucent materials chosen.
• pullers 103 each have a uniform, thin cross section with a thickened edge 11 1 along the inner curve of arch 109. This enables pullers 103 to be thick enough where needed to comfortably migrate the shoulders of patient 102 without the excessive pressure that would be caused by a uniformly thin arch. It is contemplated that the thickness of the pullers may be different in alternate embodiments. For example, without limitation, one alternate embodiment may have a uniform thicker cross section, and other alternate embodiments may be thinner at the main portion of the arch and thicker throughout the edge of the arch and the rest of the structure to provide strength and to generally eliminate any artifact from the arch in the image. Some embodiments may include padding along the edge of the arch for the comfort of the patient. Alternate embodiments of the present invention may have arches of various different shapes and sizes to accommodate a variety of subjects
• each puller 103 is connected to an automatic brake assembly that comprises shuttle 105 mounted on a guide rail 113.
• Shuttle 105 houses a rack brake assembly actuated via the release of a trigger 1 15, as illustrated by way of example in Figure 2.
• Trigger 115 enables shuttle 105 to be locked into place on guide rail 113 or to be released from guide rail 1 13.
• trigger 115 is held down by a user, shuttle 105 is able to slide caudally along guide rail 113, and when trigger 115 is released, the brake is engaged and shuttle 105 is held securely in place on guide rail 113.
• the braking systems allow for the hands free usage of positioning devices 100 during radiography, with quick release of all migratory pressure to the shoulders of patient 102 via the simple tapping of triggers 115.
• the braking mechanism may not be equipped with an automatic brake, and instead may be equipped with a brake requiring a separate step to actuate the braking via usage of a mechanism such as, but not limited to, a lever, a knob, a set screw, a pin, a dial, a trigger, a switch, a clutch, etc.
• pullers 103 are attached to shuttles 105 with variable positioning assemblies 104.
• variable positioning assemblies 104 slide up and down on vertical rails 1 17. Once pullers 103 are at the correct height, variable position assemblies 104 are secured into place with clamps 1 19.
• suitable means may be used to adjust the height of the pullers in alternate embodiments, such as, but not limited to, a perforated rail and sliding mechanism that is held in place with a pin, a notched rail and sliding mechanism with a spring loaded pin, pneumatic or hydraulic mechanisms, etc.
• the distances of pullers 103 from vertical rails 1 17 are adjusted by sliding rods 121 attached to pullers 103 through clamps 123 on variable positioning assemblies 104.
• various different adjustment means may be used in alternate embodiments such as, but not limited to, a pin that may be inserted into one of a multiplicity of holes on the rod, a threaded rod that may be screwed into or out of a threaded piece on the adjustment mechanism or on the vertical rail, a telescoping rod, set screws, etc.
• the angle of pullers 103 may also be adjusted by rotating rods 121.
• the pullers are not adjustable or adjustable in fewer directions.
• the pullers are directly attached to the braking shuttle by a fixed connection rod.
• only the heights of the pullers are adjustable.
• guide rails 113 are attached to patient transport backboard
• clamps 106 are simple adjustable clamps employing hand actuated adjustable screws as the means of variable opening, closing and securement onto transport backboard 101.
• a multiplicity of suitable securing means may be used to secure the guide rails to various patient transport and immobilization platforms such as, but not limited to, different types of clamps, bolts, screws, hooks, etc. Some alternate embodiments may be permanently attached to the patient platform.
• patient 102 who has suspected head or neck injuries, is placed on patient transport backboard 101, and immobilization means 125 are placed near the head of patient 102 in order to immobilize the head and neck of patient 102.
• positioning devices 100 are then affixed to backboard 101 near the level of the midsection of patient 102 with one device 100 on each side of patient 102.
• the height and width of pullers 103 are adjusted with variable positioning assemblies 104 so that arches 109 are placed at the acromioclavicular joints of patient 102.
• Clamps 119 and 123 hold puller 103 in their adjusted positions.
• a user may then actuate triggers 115 and pull shuttles 105 and thus puller 103 away from the head of patient 102 in order to effect temporary caudal migration of the shoulders of patient 102 for purposes of full radiographic visualization of the cervical vertebral column without disturbance to the structures of the vertebral column or to immobilization means 125. Furthermore, since positioning devices 100 attach directly to patient transport backboard 101, imaging can be performed without removing patient 102 from backboard 101. Once the shoulders are properly migrated, the user releases triggers 115 to engage the braking system of shuttles 105 to lock pullers 103 into place. Upon successful radiography, triggers 115 are actuated, and pullers 103 are pushed away from the shoulders of patient 102 so that the temporary caudal migration of the anatomy of patient 102 is relaxed and the shoulders return to their natural positions.
• the present embodiment may be used in various different ways.
• two positioning devices 100 are used in tandem as a mirror imaged set for purposes of simultaneous positioning of the shoulders to optimize the radiographic visualization of the cervical vertebral structures.
• positioning devices 100 may be used independently from each other to migrate the shoulders independently to different degrees.
• one shoulder positioning device may be used alone to migrate a single shoulder.
• alternate embodiments may comprise various different features that may alter the method of use of these devices.
• some embodiments may comprise a quick release mechanism for the braking mechanism so that the device may be immediately removed from the subject in case of an emergency.
• One alternative embodiment may be equipped with handholds to be operated without the usage of any assembly.
• the variation of some features of the positioning devices in alternate embodiments such as, but not limited to, variable positioning assemblies or securing means may alter the particular way users employ the device.
• positioning devices 100 generally eliminate the common radiographic artifact presented by the inherent bone density of the shoulders of patient 102 without interference with the immobilization of the head and neck or immobilization means 125 via the safe, temporary and variable caudal migration of the acromioclavicular joint and adjacent structures of the shoulder, such that said structures no longer directly overlay the cervical vertebral column in a typical line of sight for a diagnostic lateral radiography.
• Those skilled in the art have failed to recognize that the acromioclavicular joint is an optimal force application point to migrate the shoulders caudally. With proper usage of positioning devices 100, arches 109 make direct contact with these joints and transfer all motive energy directly to these joints via rigid positioning.
• Positioning devices 100 may be mountable to trauma backboards, longboards and the full spectrum of emergency patient transport platforms utilized with a cervical trauma patient. In other embodiments, positioning devices 100 may be configured to attach to a thin radio lucent sheet positioned under a patient, or immediately positioned under a patient care platform with a minimum of difficulty. In these embodiments positioning devices 100 may be utilized with any and all patient care platforms. The correct use of the present embodiment generally eliminates the risk of further patient injuries that are implicit in the usage of the controversial dynamic flexion/extension method and the swimmers view, and in concomitant disruption to the immobilization of the patients head and neck and the associated risk which these and other current positioning options entail.
• the present embodiment generally eliminates the cumulative radiation exposure to staff in the diagnosis of suspected injury to the cervical vertebral column and the cervico-thoracic junction.
• FIG. 2 is an exploded view of the internal components of an exemplary rail guided shuttle 205, in accordance with an embodiment of the present invention.
• rail guided shuttle 205 houses an exemplary braking mechanism mounted upon a toothed rack 210 fitted within a rail guide assembly 213, such that bidirectional free travel of shuttle 205 is permitted while a user grips a spring loaded trigger 215.
• a release mechanism 220 connected to trigger 215 pushes down on a locking pin 225 and lifts a tooth 227 of locking pin 225 above toothed rack 210.
• the brake actuation is affected via the release of trigger 215 by the user, thereby allowing a spring 230 to return trigger 215 to the locked position, which lifts release mechanism 220 and lowers a locking mechanism 235 connected to trigger 215 to force tooth 227 of locking pin 225 into immediate rigid interface with toothed rack 210.
• locking means may be used in alternative embodiments to hold the device in place on the guide rail such as, but not limited to, various friction and caliper braking mechanisms along the lines of bicycle or motorcycle disc, drum or caliper brakes arranged so as to replicate the above braking function with equivalent trigger actuation, a ratcheting rack and pinion mechanism with a crank, various types of clamps, etc.
• braking mechanisms which operate upon various different mechanical means well known to one skilled in the art including, but not limited to, mechanical cone brakes, hydraulic braking systems, hydraulic clutches, mechanical clutches, pneumatic brakes, pneumatic clutches, friction/disc clutches, spring clutches, sprag clutches, roller ramps, electromagnetic clutches, gear drives, chain drives, etc.
• the mechanical means of these braking mechanisms may involve, yet not be limited to, friction, wrap springs, oil shear, toothed surfaces, as well as non contact methods.
• actuation means other than triggers may be used to control the braking mechanism in alternate embodiments such as, but not limited to, remotely operated solenoids, buttons, spring loaded knobs, dials, etc.
• the rigid pullers may be affixed to a handheld framework as opposed to being affixed to a variably positionable and lockable patient platform mounted assembly.
• this embodiment would sacrifice the ability to safeguard the user from cumulative radiation load, one skilled in the art would readily recognize the advantages to the portability offered by such a modality.
• the rigid radiolucent pullers may be affixed to a set of handheld or mechanically positionable straps, as opposed to a mountable and variably
• Said straps may be constructed of durable materials to including, without limitation, heavy duty fabric, Kevlar, polypropelene, braided nylon cord, cotton canvas, cotton duck, plastics, vinyl fabric, vinyl composites, vinyl coated mesh, Luma-Fab GT, engineered polymers, stainless steel electromagnetic shielding textile, composite ripstop, denier nylon, Lycra, Lycra blends, polyurethane laminate, Textiline, mylar, Canvak waxed canvas, ballistic and non-ballistic Cordura, Sorbtex poly mesh, neoprene, Hypalon, Toughtek leather, braided rope, etc.
• the trigger and brake mechanism in one alternate embodiment may be encased in a rubberized grip with ergonomic features such as, but not limited to, finger grooves and curved edges.
• the variable positioning assemblies and securing clamps may have large ergonomic dials that allow for easy operation.
• mechanical force gauges may be employed to provide feedback to the medical personal as to the force being applied to the patient's acromioclavicular joints.
• electronic sensors and displays may be incorporated to monitor the forces applied.
• automatic safety releases may active to release the brake mechanisms if an amount of force exceeds a preset limit.
• some or all of the mechanical movements of the positioning device may be achieved through the use of motors.
• motors on the braking mechanisms move the shuttles along the guide rails to exert beneficial migratory pressure to the acromioclavicular joints or to relieve this pressure.
• the motors may be operated under computer control to simultaneously provide an equal amount of force on each of the patient's acromioclavicular joints.
• the computer control of the motors may also activate the radiographic visualization when a determined amount of pressure has been applied.
• the computer control may release the force applied as soon as the radiographic visualization is complete.
• the adjustment of the positioning of the shoulder pusher may be accomplished by motors controlling the variable positioning assemblies.
• radiographic visualization may be all remotely controlled medical personal or computer controlled.
• a radiolucent patient positioning system includes a puller member that has an engagement portion being configured for engaging a patient's neck/shoulder area and applying a pulling force thereupon.
• This embodiment further includes a support member that has a first portion at a first end of the support member and a second portion at a second end of the support member.
• the first support member portion is joined to the pulling member at a location away from where the engagement portion of the pulling member contacts the patient during normal use.
• a longitudinal axis of the first support member portion forms an off-axis relationship to a longitudinal axis of the pulling member.
• the first support member portion and the joining thereto being configured to be at least operational to enable the pulling member to adjustably maintain a substantially fixed vertical elevation that aligns the engagement portion of the pulling member to effectively engage the patient's
• the second support member portion being configured with a variable shuttle member that is adjustably joined to the guide member for adjusting the removable joining position of the support member along a length of a guide member.
• This guide member being configured to have a substantially parallel orientation relative to a longitudinal axis of the engagement portion of the pulling member.
• a joining mechanism configured to removably fix the guide member to a structure positioned below the patient such that the pulling member is operable for being positioned relative to the structure and effectively engage the patient's neck/shoulder area so as to enable the caudally migration of the patient's neck/shoulder(s).
• the puller member is a rigid structure as described in at least some of the foregoing embodiments.
• the puller member further includes a support portion, which is what the support member portion is joined to.
• the support portion may be made of a non-rigid or semi-rigid construction.
• the support portion could be a firm but flexible structural support material, or even extremely flexible materials like straps.
• the joining between the pulling member and the first support member portion includes a variable offset member, where the variable offset member is configured to enable the engagement portion of the pulling member to be horizontally adjusted to be able to contact the patient's neck/shoulder area at various locations there along within a certain range determined by an adjustment range of the variable offset member.
• the variable offset member is not a rod, but generally an elongated rigid member and the variable positioning device is a removable position locking mechanism where the pulling member is joined towards one end of the elongated rigid member and the top support member portion is joined to the variable positioning device.
• the variable positioning locking mechanism is configured using known removable position fixing techniques to movably fixating the pulling member along a length of the elongated rigid member thereby enabling an adjustable range of offset distances between the pulling member and the top support member portion.
• a radial or spherical based 3-D positioning system is implemented using at least some angular adjustable joints instead of only linearly adjustable joints (e.g., without limitation, slide rail/clamping at 90 degree angles to each other).
• angular adjustable joints may be implemented with pivoting joints having screw down clamps to fix their angle, and the pivoting joints may each be restricted to one or two degrees of freedom, Those skilled in the art will readily recognize, in light of the teachings of the present invention, that there are a multiplicity of suitable alternative approaches to implementing angular adjustable joints depending upon the needs of the particular application.
• the degrees of freedom to achieve 3-D positioning of the shoulder pullers are a desired mix and match of linear joints and pivoting joints.

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