US20160242705A1 - Mobile emergency vehicle with computerized tomography scanner - Google Patents
Mobile emergency vehicle with computerized tomography scanner Download PDFInfo
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- US20160242705A1 US20160242705A1 US14/631,475 US201514631475A US2016242705A1 US 20160242705 A1 US20160242705 A1 US 20160242705A1 US 201514631475 A US201514631475 A US 201514631475A US 2016242705 A1 US2016242705 A1 US 2016242705A1
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- scanner
- patient compartment
- stretcher
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/02—Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computerised tomographs
- A61B6/032—Transmission computed tomography [CT]
- A61B6/035—Mechanical aspects of CT
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/44—Constructional features of apparatus for radiation diagnosis
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/44—Constructional features of apparatus for radiation diagnosis
- A61B6/4405—Constructional features of apparatus for radiation diagnosis the apparatus being movable or portable, e.g. handheld or mounted on a trolley
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/56—Details of data transmission or power supply, e.g. use of slip rings
-
- 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
- A61G3/00—Ambulance aspects of vehicles; Vehicles with special provisions for transporting patients or disabled persons, or their personal conveyances, e.g. for facilitating access of, or for loading, wheelchairs
- A61G3/001—Vehicles provided with medical equipment to perform operations or examinations
Definitions
- the present invention relates to mobile emergency vehicles, such as ambulances. More particularly, the present invention relates to mobile emergency vehicles that have scanning equipment therein. In particular, the present invention relates to mobile emergency medical vehicles that are adapted to facilitate the use of a CT scanner in locations remote from a hospital.
- Strokes are currently the third leading cause of death in the United States. Strokes are also the main cause of long-term disability. Strokes are caused by an abrupt interruption of the blood supply to the brain or spinal cord. This deprives the tissue of oxygen and resulting tissue damage. Strokes typically occurring in one of two forms: (i) hemorrhagic strokes, which occur with the rupture of a blood vessel; and (ii) ischemic strokes which occur with the obstruction of a blood vessel.
- Rapid diagnosis is a key to effective stroke treatment. This is because the treatment for an ischemic stroke may be contra-indicated for the treatment for a hemorrhagic stroke. Additionally, the effectiveness of a particular treatment may be time-sensitive. More particularly, the current preferred treatment for an acute ischemic stroke, i.e. the administration of tPA to eliminate blood clots, is contra-indicated for a hemorrhagic stroke. Furthermore, clinical data suggests that the medication used to treat ischemic strokes is most effective if it is administered within three hours of the onset of the stroke. Current diagnosis times (the time needed to identify that the patient is suffering from a stroke and to identify the hemorrhagic or ischemic nature of the stroke) frequently exceeds this three-hour window. As a result, only a fraction of current ischemic stroke victims are timely treated with tPA.
- Imaging is generally necessary to properly diagnose and treat a stroke.
- imaging is necessary to distinguish strokes from other medical conditions, to distinguish between the different types of strokes, and to determine appropriate treatment.
- CT scanners generally operate by directing x-rays into the body from a variety of positions, detecting the x-rays passing through the body, and then processing the detected x-rays so as to build a computer model of the patient's anatomy. This computer model can then be visualized so as to provide images of the patient's anatomy. It is been determined that such CT scanning, including non-enhanced CT scanning, CT angiography scanning, and CT perfusion and scanning is able to provide substantially all of the information needed to effectively diagnose and treat a stroke.
- the CT scanner is typically located in the hospital's radiology department and the patient is typically received in the emergency room. As such, there will be a round-trip time between the emergency room and the radiology department. This can involve substantial delays, even in the best of hospitals. As a result, the time spent in transporting the patient from the emergency room to the radiology department and then back again can consume critical time which can compromise proper treatment of the patient.
- FIG. 1 shows the scanning system of NeuroLogic Corp.
- This scanning system 10 includes a frame 12 , and a CT imaging unit 14 mounted to the frame 12 .
- the CT imaging unit 14 is adapted to scan anatomical objects and generate images of such anatomical objects, such as the head of the patient.
- a transport mechanism 16 is mounted to the frame.
- the transport mechanism 16 allows fine movement for moving the CT imaging unit 14 precisely relative to the patient during scanning.
- the imaging system 10 can further include an on-board networking unit mounted to connect the CT imaging unit to a workstation, the hospital's PACs system, or other IT network without requiring the use of conventional physical cabling.
- the onboard power unit is adapted to provide the electrical power needed to operate the CT imaging unit 14 , the transport mechanism 16 and the networking unit.
- the frame 12 includes a pair of arcuate frame members 18 and 20 .
- These arcuate members 18 and 20 are rigidly connected to the imaging unit 14 and provide a surface that facilitates the ability to physically move the imaging system 10 .
- the arcuate frame elements 18 and 20 can provide a strong surplus for securement external objects, as will be described hereinafter.
- FIGS. 2 and 3 show prior art mobile emergency vehicles that are currently manufactured by Frazer, Inc. of Houston, Tex.
- Each of these mobile emergency vehicles 10 is the subject of U.S. Pat. No. 4,672,296 (issued on Jun. 9, 1987) and U.S. Pat. No. 4,785,227 (issued on Nov. 15, 1988) to J. Griffin.
- each of the mobile emergency vehicles shown in FIGS. 2 and 3 are unique in that it incorporates a generator 14 that is mounted on a skid-type mounting frame 13 and fitted within the compartment 12 of the mobile emergency vehicle 10 .
- the emergency medical vehicle 10 is built on a conventional truck chassis having the main transport engine located beneath the hood in a manner well known in the art.
- the patient compartment 11 is mounted on the rearward portion of the truck chassis in a manner also known in the prior art.
- the mobile emergency vehicle 10 of these prior art patents has the vehicle essentially self-supported with regard to its electrical requirements.
- the auxiliary engine and generator are mounted exteriorly of the patient module so that the exhaust system extends outwardly so as to deliver minimal noise and vibration to the patient module.
- the electrical output of the generator 14 is preferably capable of providing 4 to 6 kW of continuous electrical power and is capable of continuously delivering 115 volts of AC power to the electrical load center of the patient compartment 11 .
- the load center provides distribution of the primary output of the generator 14 to air-conditioning and heating. As such, the generator 14 provides the power necessary to supply both cooling and heating to the patient compartment.
- the generator which is preferably located on the passenger side at a rear lower corner of the vehicle provides module power for emergency lights, air conditioning, heating, suction, interior lights, and the like.
- U.S. Pat. No. 4,181,347 shows a mobile computerized tomography unit that includes a vehicle trailer, a CT scanner gantry and patient table, a means for mounting the CT-scanner gantry, and a mini-computer system for the display and data processing of the CT scanner mounted in the trailer.
- Shock-absorbing components are provided so as to insulate the CT scanner from undue shocks.
- U.S. Pat. No. 5,097,497 issued on Mar. 17, 1992 to Deucher et al., provides a deployable CT medical system.
- the CT medical system has a gantry that is mounted by helical wire rope shock isolators to the floor of a shelter at about a 60° angle relative to a central axis of the shelter. Mechanical assemblies limit movement of the tiltable gantry portion relative to fixed gantry portions.
- a CT scanner control console is mounted adjacent an opposite end of the shelter on a shock isolator.
- U.S. Pat. No. 6,481,887 shows a mobile medical image scanner and a teleradiology system that are incorporated into an ambulance or other vehicle to permit the patient be diagnosed while en route for a treatment facility, such as a trauma center.
- the system obtains medical image data while the patient is been transported in the vehicle and transmits the medical image data to a receiver in a location which is remote from the vehicle.
- the transmitted medical image data is displayed in a humanly discernible manner and interpreted by qualified physician who then communicates diagnostic information to the technicians in the vehicle and/or to the treating physicians at the treatment facility.
- U.S. Pat. No. 6,625,252, issued on Sep. 23, 2003 to P. J. Mirabella describes a mobile medical image scanner and teleradiology system is incorporated into an ambulance or other vehicle so as to permit the patient to be diagnosed.
- the system obtains medical image data during the transport of the patient in the vehicle.
- the system will transmit medical image data to a receiver at a hospital or other location. This data can then be remotely interpreted.
- It is another object of the present invention provide an emergency medical vehicle in which the CT scanner can be fixed to the wall of the vehicle during movement of the vehicle and deployed from the wall once the vehicle reached the desired destination.
- the present invention is an apparatus that comprises a vehicle having a patient compartment and a motor, a generator cooperative with the patient compartment, and a CT scanner positioned in the patient compartment and connected to the generator so as to supply power to the CT scanner.
- the patient compartment has a front wall, a floor and a pair of side walls.
- the CT scanner is releasably affixed to the front wall of the patient compartment.
- the generator is operable independently of the motor of the vehicle.
- the front wall of the patient compartment has at least one receptacle affixed thereto.
- the CT scanner has at least one pin connector extending toward the front wall.
- the pin connector is releasably received by the receptacle.
- the receptacle comprises a first pair of receptacles positioned at a first elevation and a second pair of receptacles positioned at a second elevation. The first elevation is higher than the second elevation.
- the pin connector includes a first pair of pin connectors and a second pair of pin connectors that are respectively receivable in the first and second pairs of receptacles.
- the CT scanner has a frame extending therefrom.
- the pin connector is affixed to the frame of the CT scanner.
- the receptacle includes a quick-release lock thereon. This quick-release lock is movable between a release position and a locked position. The locked position is adapted to lock the pin connector within the receptacle.
- the patient compartment has a door on one of the pair of side walls.
- a shelf is mounted on the door so as to be extendable in an orientation transverse to the door.
- At least one chock is affixed to the floor of the patient compartment. This chock is adapted to receive a wheel of a stretcher therein.
- the stretcher is removably positioned in the patient compartment.
- the stretcher is positioned rearwardly of the CT scanner.
- the stretcher has a plurality of wheels connected thereto.
- At least one of the pair of side walls of the patient compartment has a strap-receiving element thereon.
- the present invention further includes a strap that is releasably fastened to the stretcher and attached to the strap-receiving element.
- the strap is adapted to fix a position of the stretcher within the passenger compartment.
- a headboard is positioned on the stretcher so as to extend toward the CT scanner.
- FIG. 1 is a perspective view of a prior art CT scanner.
- FIG. 2 is a frontal perspective view of prior art emergency medical vehicle as used in the present invention.
- FIG. 3 is a side view of the emergency medical vehicle of the prior art showing, in particular, the generator located within a compartment below the patient compartment.
- FIG. 4 is a is a partially cutaway side elevational view of the emergency medical vehicle of the present invention showing the CT scanner as located in a fixed position.
- FIG. 5 is a partially cutaway side elevational view of the emergency medical vehicle of the present invention showing the CT scanner in a position during use.
- FIG. 6 is a perspective view showing the pin connector as used in the present invention.
- FIG. 7 is a perspective exploded view of the pin connector of the present invention.
- FIG. 8 is a view of the receptacles as positioned on the front wall of the patient compartment of the emergency medical vehicle of the present invention.
- FIG. 9 is a perspective exploded view of the receptacle as used on the front wall of the emergency medical vehicle of the present invention.
- FIG. 10 is a side elevational view showing the strap-receiving element as attached to a side wall of the emergency medical vehicle of the present invention.
- FIG. 11 is a plan view showing the placement of chocks on the floor of the emergency medical vehicle of the present invention.
- FIG. 12 is a perspective view of a single chock as used in the present invention.
- FIG. 13 is a perspective view showing the door and shelf of the emergency medical vehicle of the present invention.
- the apparatus 30 includes a vehicle 32 that includes a patient compartment 34 , a generator (shown in FIGS. 2 and 3 ), and a CT scanner 36 positioned in the patient compartment 34 .
- the CT scanner 36 is connected by a line 38 to the generator such that the generator can supply power to the CT scanner 36 .
- the CT scanner 36 is shown as rigidly affixed to the front wall 40 of the patient compartment 34 of the vehicle 32 .
- the vehicle 32 has a configuration similar to the emergency medical vehicle of Frazer, Inc., as shown in FIGS. 2 and 3 herein before.
- the vehicle 32 will include a generator located toward the rear of the patient compartment 34 .
- the generator can operate independently of the motor of the vehicle so as to directly supply power to air-conditioning systems located within the patient compartment 34 and to supply power to the CT scanner 36 .
- the motor of the vehicle 32 will be positioned under the hood 42 at the front of the vehicle 32 .
- the patient compartment 36 includes a floor 44 .
- Floor 44 is positioned so as to allow the stretcher 46 to be placed thereon.
- the stretcher 46 is spaced at a distance away from the mounted CT scanner 36 .
- the stretcher 46 is illustrated in an upwardly extending position.
- the stretcher 46 would have to be in a lowered condition so as to allow the latching mechanisms on the floor 44 to properly engage with the frame of the stretcher 46 so as to lock the position of the stretcher 46 in its lowered positioned within the patient compartment 34 .
- the stretcher 46 is maintained in an elevated position above the floor 44 so that the head of the patient located on the stretcher 46 can be placed in proximity to the opening of the CT scanner 36 .
- the CT scanner 36 includes a pin connector 48 and a pin connector 50 .
- the pin connector 48 is secured to the arcuate frame member 52 of the CT scanner 36 .
- the pin connector 50 is also secured to the arcuate frame member 52 of the CT scanner 36 .
- a receptacle 54 is affixed to the inner surface of the front wall 40 of the patient compartment 34 .
- Another receptacle 56 is also mounted to the front wall 40 of the patient compartment 34 .
- the receptacle 54 (along with the pin connector 48 ) is located at a higher elevation than the receptacle 56 and the pin connector 50 .
- the CT scanner 36 is illustrated in its proper position during travel of the vehicle 32 .
- the CT scanner 36 is rigidly mounted to the front wall 40 so as to generally isolate the CT scanner 36 against vibration. Additionally, the location of the CT scanner 36 at a location adjacent to the front wall 40 will place the relatively heavy CT scanner 36 directly above a center-of-gravity of the vehicle 32 . As such, this greatly enhances the stability of the vehicle 32 during travel and turning.
- FIG. 5 shows the apparatus 30 of the present invention in which the CT scanner 36 has been separated from the front wall 40 of the passenger compartment 34 so as to be in a proper position for use.
- a patient 58 is illustrated as positioned on the stretcher 46 . It can be seen that the head 60 of the patient 58 is maintained in an elevated position as a result of the elevated positioning of the stretcher 46 . Additionally, for the proper operation of the CT scanner 36 , it will be necessary for the head 60 of the patient 58 to extend forwardly of the front end 62 of the stretcher 46 .
- the present invention incorporates a headboard 64 located below the head 60 of the patient 58 . The headboard 64 is maintained in a generally horizontal orientation by the force exerted by the back of the patient 58 against the top surface of the headboard 64 . As a result, the head 60 can be properly supported beyond the front end 62 of the stretcher 46 .
- a chock 66 is affixed to the floor 44 of the passenger compartment 34 .
- the chock 66 serves to receive the wheel 68 of the stretcher 46 therein.
- Chock 66 is illustrated in FIG. 5 in a transparent fashion so as to illustrate the manner in which the wheel 68 is received therein.
- the chock 66 serves to prevent any further forward movement of the stretcher 46 and the wheel 68 .
- a strap-receiving element 70 can be mounted to a wall 72 of the passenger compartment 34 .
- the strap-receiving element 70 can be in the nature of a D-ring that is secured to the wall 72 .
- Various other appliances can be provided so as to act as a technique for receiving the strap 74 .
- the strap 74 can be secured to a leg of the stretcher 46 or secured to the body of the stretcher 46 .
- the strap 74 is mounted to the strap-receiving element 78 so as to exert a strong force therewith so as to properly stabilize the elevated stretcher 46 in its desired position within the passenger compartment 34 .
- the CT scanner 36 is shown as removed from the pin connectors 54 and 56 .
- the pin connector 48 has been released from the receptacle 54 .
- the pin connector 50 has been released from the receptacle 56 .
- each of the connectors 54 and 56 includes a quick-release lock so that a minor manipulation of the lock can allow for the release of the pin connectors 48 and 50 .
- the CT scanner 36 is moved from its position adjacent to the front wall 42 and positioned adjacent to the head 60 of the patient 58 .
- the generator can supply power to the CT scanner 36 so as to allow for the desired operation of the CT scanner.
- the results of the CT scan are available through known technology. As a result, the paramedics or technicians associated with the apparatus 30 can quickly evaluate the type of stroke suffered by the patient 58 .
- the generator is known to provide clean power and proper power factors. As a result, through the use of the generator of the vehicle 32 , a clean and conditioned power can be supplied to the CT scanner 36 . Once again, this enhances the integrity of the CT scanner 36 and improves the scanning results.
- the CT scanner 36 can be placed back against the front wall such that the pin connectors 48 and 50 properly engage with the receptacles 54 and 56 .
- the vehicle 32 is now ready for delivery of the patient 58 to a hospital or other treatment facility.
- the stretcher 46 can also be lowered and locked to the floor 44 of the patient compartment 34 during such travel. This will maintain both the CT scanner 36 in the patient 58 in a safe condition during travel.
- FIG. 6 shows the pin connector 48 .
- the pin connector 48 includes a body 76 that includes an aperture 78 adjacent the rearward end thereof. Aperture 78 will be suitable for receiving the frame member of the CT scanner therein.
- a pin 80 projects forwardly of the body 76 .
- the pin 80 has a pointed end 82 that can easily guide into the receptacle.
- a bracket 84 extends upwardly from the body 76 so as to secure the rear end of the pin 80 thereto.
- Bracket 84 has a generally U-shaped configuration and is affixed by fasteners to the body 76 .
- the pin 80 includes a shoulder 86 adjacent to the bracket 84 . Shoulder 86 provides an abutment surface against the receptacle.
- FIG. 7 is an exploded view of the pin connector 48 .
- the body 76 has a U-shaped slot 88 formed adjacent the rearward end thereof.
- the U-shaped slot 88 serves to define a portion of the aperture 78 .
- Another bracket 90 also includes a U-shaped slot 92 that faces the U-shaped slot 88 of the body 72 .
- the U-shaped slot 88 can be placed over the arcuate frame member of the CT scanner.
- the U-shaped slot 92 can then be placed on an opposite side of the arcuate frame member of the CT scanner.
- the U-shaped slot 88 and the U-shaped slot 92 will define the aperture 78 and rigidly secure the body 70 to the arcuate frame member.
- a similar construction is located at the forward end of the body 72 .
- a further bracket 96 can be mounted to correspond with the forward end of the body 72 .
- This also defines an aperture 98 which can receive the other arcuate frame member of the CT scanner.
- Fasteners 100 will serve to secure the further bracket 96 to the forward end of the body 72 so as to lock over the arcuate frame member of the CT scanner.
- the bracket 84 is illustrated as also attached by fasteners 100 to the body 72 into the brackets 96 .
- the pin 80 is shown as having a milled notch 102 formed across a chord of the circumference of the pin 80 .
- This notch 102 is suitable for engaging with the quick-release lock of the receptacle.
- a bolt 104 can be fastened to the pin 80 so as to rigidly affixed the pin 80 against the bracket 84 .
- FIG. 8 shows the orientation of the various receptacles 54 , 56 , 108 and 110 on the front wall 40 of the patient compartment 34 .
- the receptacle 54 is at an elevation greater than the receptacle 56 .
- Receptacle 108 is at the same elevation as receptacle 54 but spaced horizontally away from receptacle 54 .
- the receptacle 110 is at the same elevation as the receptacle 56 but spaced from the receptacle 56 .
- the receptacle 56 is adjacent to a side wall 112 of the vehicle.
- the orientation of the receptacles 54 and 108 serves to prevent deflection of the CT scanner horizontally.
- each of the receptacles 54 , 108 at 110 includes a quick-release lock 114 .
- FIG. 9 is an exploded view of the receptacle 54 .
- Receptacles 108 and 110 will have a similar configuration to receptacle 54 .
- Receptacle 56 has the quick-release lock 114 removed therefrom.
- Receptacle 54 includes a square tubular body 116 having an opening 118 on the top thereof.
- a hex head 120 is mounted to an aluminum coupling 122 at the opening 118 .
- the quick-release lock 114 includes a handle 124 extending transversely outwardly thereof.
- a shank 126 of the quick-release lock 114 will extend downwardly into the interior of the square tubular body 116 .
- a bushing 128 includes the pin-receiving hole 130 at the forward end thereof.
- the bushing 128 is in the nature is formed of a NylatronTM material.
- the bushing 128 is fitted into the open end 132 of the square tubular body 116 .
- the square tubular body 116 can be connected to a panel 134 .
- a gusset 136 can be affixed to the panel 134 and to the square tubular body 116 so as to secure the square tubular body.
- Suitable fasteners 138 are provided so as to fasten the panel 134 to the front wall 40 of the vehicle.
- the handle 124 When the pin is inserted into the hole 130 , the handle 124 can be rotated for one quarter rotation so as to lock the pin in position within the square tubular body 116 .
- the reverse turning of the handle 124 and the quick-release lock 140 can serve to release the pin from its locked configuration.
- the use of the bushing 128 further facilitates insulation of the CT scanner against shocks and vibrations.
- the outer end of the bushing 128 will generally bear against the shoulder 86 of the pin 80 . This configuration has been found to enhance resistance against vibration and shock absorption in a superior manner to other techniques.
- FIG. 10 illustrates the side wall 72 of the vehicle.
- the strap-receiving element 70 can be seen.
- the strap-receiving element 70 is in the nature of a D-ring 150 that can be anchored by bracket 152 to the side wall 72 .
- the D-ring 150 can serve to rigidly secure a strap thereto. This facilitates the ability to fix a position of the stretcher in an elevated position within the interior of the patient compartment.
- FIG. 11 shows the floor 44 of the passenger compartment 44 .
- a first chock 66 and a second chock 170 that are affixed in spaced relationship to each other and to the floor 44 .
- the chock 66 includes a slot 172 which opens at a rear of the chock 66 .
- the chock 170 also includes a slot 174 that opens at a rear of the chock 170 .
- Each of the slots 172 and 174 includes a funnel-type opening so as to facilitate the ability to funnel the wheels of the stretcher into each of the slots.
- Each of the chocks 66 and 70 is located rearwardly and in spaced relationship to the CT scanner 36 . In normal use, the forward wheels of the stretcher will move into each of the slots 172 and 174 of the chocks 66 and 170 . As such, the chocks 66 and 170 will serve to fix the position of the wheels and to prevent further forward movement.
- FIG. 12 is a perspective view of the chock 66 .
- the chock 66 includes a pair of flanges 180 and 182 that extend outwardly of raised sides 184 and 186 .
- the raised sides 184 and 186 serve to define a slot 172 .
- the raised sides 184 will serve to prevent the wheels of the stretcher from pivoting.
- the flanges 180 and 182 can be secured to the floor 44 through the use of appropriate fasteners.
- FIG. 13 is an illustration of a unique feature to he present invention.
- the side wall 72 of the vehicle 32 is shown.
- a door 200 is hingedly mounted to the side wall 72 so as to allow entrance into an interior of the patient compartment 34 .
- a shelf 202 that extends generally transversely outwardly of the door 200 .
- a slide mechanism 204 allows the shelf 202 to move between a position bearing against the door 200 and the position shown in FIG. 13 .
- the shelf 202 is particularly configured so as to receive the various control instruments, computers, displays and other items thereon. As such, during the operation of the CT scanner the technician can operate and monitor the CT scanner from a location outside of the patient compartment 34 .
- the shelf 202 can be lowered and locked in positioned for further travel.
Abstract
Description
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- 1. Field of the Invention
- The present invention relates to mobile emergency vehicles, such as ambulances. More particularly, the present invention relates to mobile emergency vehicles that have scanning equipment therein. In particular, the present invention relates to mobile emergency medical vehicles that are adapted to facilitate the use of a CT scanner in locations remote from a hospital.
- 2. Description of Related Art Including Information Disclosed Under 37 CFR 1.97 and 37 CFR 1.98.
- Strokes are currently the third leading cause of death in the United States. Strokes are also the main cause of long-term disability. Strokes are caused by an abrupt interruption of the blood supply to the brain or spinal cord. This deprives the tissue of oxygen and resulting tissue damage. Strokes typically occurring in one of two forms: (i) hemorrhagic strokes, which occur with the rupture of a blood vessel; and (ii) ischemic strokes which occur with the obstruction of a blood vessel.
- Rapid diagnosis is a key to effective stroke treatment. This is because the treatment for an ischemic stroke may be contra-indicated for the treatment for a hemorrhagic stroke. Additionally, the effectiveness of a particular treatment may be time-sensitive. More particularly, the current preferred treatment for an acute ischemic stroke, i.e. the administration of tPA to eliminate blood clots, is contra-indicated for a hemorrhagic stroke. Furthermore, clinical data suggests that the medication used to treat ischemic strokes is most effective if it is administered within three hours of the onset of the stroke. Current diagnosis times (the time needed to identify that the patient is suffering from a stroke and to identify the hemorrhagic or ischemic nature of the stroke) frequently exceeds this three-hour window. As a result, only a fraction of current ischemic stroke victims are timely treated with tPA.
- Imaging is generally necessary to properly diagnose and treat a stroke. In particular, imaging is necessary to distinguish strokes from other medical conditions, to distinguish between the different types of strokes, and to determine appropriate treatment.
- Computerized Tomography (CT) has emerged as the key imaging modality in the diagnosis of strokes. CT scanners generally operate by directing x-rays into the body from a variety of positions, detecting the x-rays passing through the body, and then processing the detected x-rays so as to build a computer model of the patient's anatomy. This computer model can then be visualized so as to provide images of the patient's anatomy. It is been determined that such CT scanning, including non-enhanced CT scanning, CT angiography scanning, and CT perfusion and scanning is able to provide substantially all of the information needed to effectively diagnose and treat a stroke.
- Unfortunately, the CT scanner is typically located in the hospital's radiology department and the patient is typically received in the emergency room. As such, there will be a round-trip time between the emergency room and the radiology department. This can involve substantial delays, even in the best of hospitals. As a result, the time spent in transporting the patient from the emergency room to the radiology department and then back again can consume critical time which can compromise proper treatment of the patient.
- Thus, there was an urgent need for a new and improved CT scanner that is particularly well suited for use in stroke applications. As a result of this need, a mobile computerized tomography imaging system was developed by NeuroLogic Corp. of Danvers, Mass. This imaging system is the subject of U.S. Pat. No. 7,397,895, issued on Jul. 8, 2008 to Bailey et al. The scanning system is illustrated in
FIG. 1 . -
FIG. 1 shows the scanning system of NeuroLogic Corp. Thisscanning system 10 includes aframe 12, and aCT imaging unit 14 mounted to theframe 12. TheCT imaging unit 14 is adapted to scan anatomical objects and generate images of such anatomical objects, such as the head of the patient. A transport mechanism 16 is mounted to the frame. The transport mechanism 16 allows fine movement for moving theCT imaging unit 14 precisely relative to the patient during scanning. Theimaging system 10 can further include an on-board networking unit mounted to connect the CT imaging unit to a workstation, the hospital's PACs system, or other IT network without requiring the use of conventional physical cabling. There is also an on-board power unit mounted to the frame. The onboard power unit is adapted to provide the electrical power needed to operate theCT imaging unit 14, the transport mechanism 16 and the networking unit. - In
FIG. 1 , it can be seen that theframe 12 includes a pair of arcuate frame members 18 and 20. These arcuate members 18 and 20 are rigidly connected to theimaging unit 14 and provide a surface that facilitates the ability to physically move theimaging system 10. As such, the arcuate frame elements 18 and 20 can provide a strong surplus for securement external objects, as will be described hereinafter. -
FIGS. 2 and 3 show prior art mobile emergency vehicles that are currently manufactured by Frazer, Inc. of Houston, Tex. Each of thesemobile emergency vehicles 10 is the subject of U.S. Pat. No. 4,672,296 (issued on Jun. 9, 1987) and U.S. Pat. No. 4,785,227 (issued on Nov. 15, 1988) to J. Griffin. In particular, each of the mobile emergency vehicles shown inFIGS. 2 and 3 are unique in that it incorporates agenerator 14 that is mounted on a skid-type mounting frame 13 and fitted within thecompartment 12 of themobile emergency vehicle 10. The emergencymedical vehicle 10 is built on a conventional truck chassis having the main transport engine located beneath the hood in a manner well known in the art. Thepatient compartment 11 is mounted on the rearward portion of the truck chassis in a manner also known in the prior art. Themobile emergency vehicle 10 of these prior art patents has the vehicle essentially self-supported with regard to its electrical requirements. The auxiliary engine and generator are mounted exteriorly of the patient module so that the exhaust system extends outwardly so as to deliver minimal noise and vibration to the patient module. The electrical output of thegenerator 14 is preferably capable of providing 4 to 6 kW of continuous electrical power and is capable of continuously delivering 115 volts of AC power to the electrical load center of thepatient compartment 11. The load center provides distribution of the primary output of thegenerator 14 to air-conditioning and heating. As such, thegenerator 14 provides the power necessary to supply both cooling and heating to the patient compartment. The generator which is preferably located on the passenger side at a rear lower corner of the vehicle provides module power for emergency lights, air conditioning, heating, suction, interior lights, and the like. - Prior to the development of the emergency medical emergency medical vehicle of Frazier, Inc., all of the power requirements for ambulances were achieved through the use of an alternator directly connected to the engine. As such, the power to the patient compartment had to be supplied from energy stored in the battery or directly by the alternator. Typically, during procedures, the engine would remain idling so as to continuously supply power. Unfortunately, the power supplied by an alternator is relatively a poor quality of power. There are substantial fluctuations in the power levels provided by such alternators. Under other circumstances, the emergency vehicle would enter a closed area. As such, there would always remain the danger of carbon monoxide poisoning in those events in which the engine is maintained in an idling mode for the purposes of supplying power.
- In the past, a variety of patents have issued relating to scanning systems for mobile emergency vehicles. For example, U.S. Pat. No. 4,181,347, issued on Jan. 1, 1980 to R. G. Clark, shows a mobile computerized tomography unit that includes a vehicle trailer, a CT scanner gantry and patient table, a means for mounting the CT-scanner gantry, and a mini-computer system for the display and data processing of the CT scanner mounted in the trailer. Shock-absorbing components are provided so as to insulate the CT scanner from undue shocks.
- U.S. Pat. No. 4,449,746, issued on May 22, 1984 also to R. G. Clark, shows another mobile computerized tomography unit. This system also includes a trailer with a tomography system built therein.
- U.S. Pat. No. 5,097,497, issued on Mar. 17, 1992 to Deucher et al., provides a deployable CT medical system. The CT medical system has a gantry that is mounted by helical wire rope shock isolators to the floor of a shelter at about a 60° angle relative to a central axis of the shelter. Mechanical assemblies limit movement of the tiltable gantry portion relative to fixed gantry portions. A CT scanner control console is mounted adjacent an opposite end of the shelter on a shock isolator.
- U.S. Pat. No. 6,481,887, issued on Nov. 19, 2002 to P. J. Mirabella, shows a mobile medical image scanner and a teleradiology system that are incorporated into an ambulance or other vehicle to permit the patient be diagnosed while en route for a treatment facility, such as a trauma center. The system obtains medical image data while the patient is been transported in the vehicle and transmits the medical image data to a receiver in a location which is remote from the vehicle. At the remote location, the transmitted medical image data is displayed in a humanly discernible manner and interpreted by qualified physician who then communicates diagnostic information to the technicians in the vehicle and/or to the treating physicians at the treatment facility.
- U.S. Pat. No. 6,625,252, issued on Sep. 23, 2003 to P. J. Mirabella, describes a mobile medical image scanner and teleradiology system is incorporated into an ambulance or other vehicle so as to permit the patient to be diagnosed. The system obtains medical image data during the transport of the patient in the vehicle. The system will transmit medical image data to a receiver at a hospital or other location. This data can then be remotely interpreted.
- Unfortunately in these prior art systems, there is no convenient way of putting a CT scanner within the vehicle. Additionally, given the need for maneuverability and speed in the emergency vehicle, it was very difficult to properly mount the CT scanner so that it would not be affected adversely by shocks. Additionally, and furthermore, it is difficult to install the CT scanner in a manner in which the patient can be properly placed into proximity to the CT scanner.
- It is an object of the present invention to provide an emergency medical vehicle having a CT scanner therein.
- It is another object of the present invention provide an emergency medical vehicle in which the CT scanner can be fixed to the wall of the vehicle during movement of the vehicle and deployed from the wall once the vehicle reached the desired destination.
- It is another object of the present invention to provide an emergency vehicle which can serve to effectively diagnose different types of strokes, to facilitate treatment for such strokes, and save lives as a result of such treatment.
- It is another object of the present invention provide an emergency medical vehicle having a CT scanner therein which avoids excess exposure to radiation by operators of the CT scanner.
- It is another object of the present invention to provide an emergency medical vehicle which can maintain the stretcher or cot in an elevated fixed position.
- It is another object of the present invention to provide an emergency medical vehicle having a CT scanner therein in which the stability of the emergency medical vehicle is enhanced.
- It is another object of the present invention to provide an emergency medical vehicle that provides clean and sufficient power to the CT scanner.
- It is another object of the present invention to provide an emergency medical vehicle which avoids the need for idling the vehicle during the supply of power to the patient compartment.
- It is still a further object of the present invention to provide an emergency medical vehicle that has sufficient power to supply both the air-conditioning system and the CT scanner.
- It is still further object of the present invention to provide an emergency medical vehicle which improves the ability to maintain the integrity of the CT scanner during travel and use.
- These and other objects and advantages of the present invention will become apparent from a reading of the attached specification and appended claims.
- The present invention is an apparatus that comprises a vehicle having a patient compartment and a motor, a generator cooperative with the patient compartment, and a CT scanner positioned in the patient compartment and connected to the generator so as to supply power to the CT scanner. The patient compartment has a front wall, a floor and a pair of side walls. The CT scanner is releasably affixed to the front wall of the patient compartment. In the present invention, the generator is operable independently of the motor of the vehicle.
- The front wall of the patient compartment has at least one receptacle affixed thereto. The CT scanner has at least one pin connector extending toward the front wall. The pin connector is releasably received by the receptacle. In particular, the receptacle comprises a first pair of receptacles positioned at a first elevation and a second pair of receptacles positioned at a second elevation. The first elevation is higher than the second elevation. The pin connector includes a first pair of pin connectors and a second pair of pin connectors that are respectively receivable in the first and second pairs of receptacles. The CT scanner has a frame extending therefrom. The pin connector is affixed to the frame of the CT scanner. The receptacle includes a quick-release lock thereon. This quick-release lock is movable between a release position and a locked position. The locked position is adapted to lock the pin connector within the receptacle.
- The patient compartment has a door on one of the pair of side walls. A shelf is mounted on the door so as to be extendable in an orientation transverse to the door.
- At least one chock is affixed to the floor of the patient compartment. This chock is adapted to receive a wheel of a stretcher therein. The stretcher is removably positioned in the patient compartment. The stretcher is positioned rearwardly of the CT scanner. The stretcher has a plurality of wheels connected thereto. At least one of the pair of side walls of the patient compartment has a strap-receiving element thereon. The present invention further includes a strap that is releasably fastened to the stretcher and attached to the strap-receiving element. The strap is adapted to fix a position of the stretcher within the passenger compartment. A headboard is positioned on the stretcher so as to extend toward the CT scanner.
- This foregoing section is intended to describe, with particularity, the preferred embodiments of the present invention. It is understood that modifications to this preferred embodiment can be made within the scope of the present invention. As such, this section should not be construed, in any way, as limiting of the broad scope of the present invention. The present invention should only be limited by the following claims and their legal equivalents.
-
FIG. 1 is a perspective view of a prior art CT scanner. -
FIG. 2 is a frontal perspective view of prior art emergency medical vehicle as used in the present invention. -
FIG. 3 is a side view of the emergency medical vehicle of the prior art showing, in particular, the generator located within a compartment below the patient compartment. -
FIG. 4 is a is a partially cutaway side elevational view of the emergency medical vehicle of the present invention showing the CT scanner as located in a fixed position. -
FIG. 5 is a partially cutaway side elevational view of the emergency medical vehicle of the present invention showing the CT scanner in a position during use. -
FIG. 6 is a perspective view showing the pin connector as used in the present invention. -
FIG. 7 is a perspective exploded view of the pin connector of the present invention. -
FIG. 8 is a view of the receptacles as positioned on the front wall of the patient compartment of the emergency medical vehicle of the present invention. -
FIG. 9 is a perspective exploded view of the receptacle as used on the front wall of the emergency medical vehicle of the present invention. -
FIG. 10 is a side elevational view showing the strap-receiving element as attached to a side wall of the emergency medical vehicle of the present invention. -
FIG. 11 is a plan view showing the placement of chocks on the floor of the emergency medical vehicle of the present invention. -
FIG. 12 is a perspective view of a single chock as used in the present invention. -
FIG. 13 is a perspective view showing the door and shelf of the emergency medical vehicle of the present invention. - Referring to
FIG. 4 , there shown theapparatus 30 of the present invention. Theapparatus 30 includes avehicle 32 that includes apatient compartment 34, a generator (shown inFIGS. 2 and 3 ), and aCT scanner 36 positioned in thepatient compartment 34. TheCT scanner 36 is connected by aline 38 to the generator such that the generator can supply power to theCT scanner 36. InFIG. 4 , theCT scanner 36 is shown as rigidly affixed to thefront wall 40 of thepatient compartment 34 of thevehicle 32. - In
FIG. 4 , thevehicle 32 has a configuration similar to the emergency medical vehicle of Frazer, Inc., as shown inFIGS. 2 and 3 herein before. As was stated hereinbefore, thevehicle 32 will include a generator located toward the rear of thepatient compartment 34. The generator can operate independently of the motor of the vehicle so as to directly supply power to air-conditioning systems located within thepatient compartment 34 and to supply power to theCT scanner 36. The motor of thevehicle 32 will be positioned under thehood 42 at the front of thevehicle 32. - In
FIG. 4 , it can be seen that thepatient compartment 36 includes afloor 44.Floor 44 is positioned so as to allow thestretcher 46 to be placed thereon. Thestretcher 46 is spaced at a distance away from the mountedCT scanner 36. As will be described hereinafter, thestretcher 46 is illustrated in an upwardly extending position. In the prior art emergency medical vehicle ofFIGS. 2 and 3 , thestretcher 46 would have to be in a lowered condition so as to allow the latching mechanisms on thefloor 44 to properly engage with the frame of thestretcher 46 so as to lock the position of thestretcher 46 in its lowered positioned within thepatient compartment 34. In the present invention, thestretcher 46 is maintained in an elevated position above thefloor 44 so that the head of the patient located on thestretcher 46 can be placed in proximity to the opening of theCT scanner 36. - The
CT scanner 36 includes apin connector 48 and apin connector 50. Thepin connector 48 is secured to thearcuate frame member 52 of theCT scanner 36. Thepin connector 50 is also secured to thearcuate frame member 52 of theCT scanner 36. Areceptacle 54 is affixed to the inner surface of thefront wall 40 of thepatient compartment 34. Anotherreceptacle 56 is also mounted to thefront wall 40 of thepatient compartment 34. The receptacle 54 (along with the pin connector 48) is located at a higher elevation than thereceptacle 56 and thepin connector 50. These different elevations of pin connectors and receptacles serves to assure stability of the connection between theCT scanner 36 and thefront wall 40. If thereceptacles CT scanner 36 during the travel of thevehicle 32. This flexing would occur horizontally during travel. As will be described hereinafter, there is a first pair of pin connectors and a second pair pin connectors, along with a pair of first pair of receptacles and a second pair of receptacles. - With reference to
FIG. 4 , theCT scanner 36 is illustrated in its proper position during travel of thevehicle 32. TheCT scanner 36 is rigidly mounted to thefront wall 40 so as to generally isolate theCT scanner 36 against vibration. Additionally, the location of theCT scanner 36 at a location adjacent to thefront wall 40 will place the relativelyheavy CT scanner 36 directly above a center-of-gravity of thevehicle 32. As such, this greatly enhances the stability of thevehicle 32 during travel and turning. -
FIG. 5 shows theapparatus 30 of the present invention in which theCT scanner 36 has been separated from thefront wall 40 of thepassenger compartment 34 so as to be in a proper position for use. Apatient 58 is illustrated as positioned on thestretcher 46. It can be seen that thehead 60 of thepatient 58 is maintained in an elevated position as a result of the elevated positioning of thestretcher 46. Additionally, for the proper operation of theCT scanner 36, it will be necessary for thehead 60 of the patient 58 to extend forwardly of thefront end 62 of thestretcher 46. As a result, the present invention incorporates aheadboard 64 located below thehead 60 of thepatient 58. Theheadboard 64 is maintained in a generally horizontal orientation by the force exerted by the back of the patient 58 against the top surface of theheadboard 64. As a result, thehead 60 can be properly supported beyond thefront end 62 of thestretcher 46. - In order to enhance stability of the
stretcher 46 in its elevated position, achock 66 is affixed to thefloor 44 of thepassenger compartment 34. Thechock 66 serves to receive thewheel 68 of thestretcher 46 therein.Chock 66 is illustrated inFIG. 5 in a transparent fashion so as to illustrate the manner in which thewheel 68 is received therein. Thechock 66 serves to prevent any further forward movement of thestretcher 46 and thewheel 68. - A strap-receiving
element 70 can be mounted to awall 72 of thepassenger compartment 34. The strap-receivingelement 70, as will be described hereinafter, can be in the nature of a D-ring that is secured to thewall 72. Various other appliances can be provided so as to act as a technique for receiving thestrap 74. Thestrap 74 can be secured to a leg of thestretcher 46 or secured to the body of thestretcher 46. Thestrap 74 is mounted to the strap-receivingelement 78 so as to exert a strong force therewith so as to properly stabilize theelevated stretcher 46 in its desired position within thepassenger compartment 34. - The
CT scanner 36 is shown as removed from thepin connectors pin connector 48 has been released from thereceptacle 54. Similarly, thepin connector 50 has been released from thereceptacle 56. As will be described hereinafter, each of theconnectors pin connectors - The
CT scanner 36 is moved from its position adjacent to thefront wall 42 and positioned adjacent to thehead 60 of thepatient 58. As such, the generator can supply power to theCT scanner 36 so as to allow for the desired operation of the CT scanner. The results of the CT scan are available through known technology. As a result, the paramedics or technicians associated with theapparatus 30 can quickly evaluate the type of stroke suffered by thepatient 58. - It should be noted in the present invention that a great deal of power is required for the operation of the
CT scanner 36, along with the air-conditioning systems of thevehicle 32. Conventional alternators associated with the motor of thevehicle 32 would not be sufficient for supplying the power requirements of both theCT scanner 36 and the air-conditioning equipment. In the present invention, since the generator is independent of the motor, the generator can be sized approximately 7 kW so as to supply the requisite power to both systems. As such, the integrity of theCT scanner 36 is preserved by being maintained in a proper temperature environment. If theCT scanner 36 were exposed to extreme temperatures, then it could become damaged. Additionally, the present invention allows the motor of thevehicle 32 to be turned off during the procedure. This will serve to reduce vibrations that can occur as a result of the idling of the motor. This causes a more accurate scan to be achieved. Furthermore, the generator is known to provide clean power and proper power factors. As a result, through the use of the generator of thevehicle 32, a clean and conditioned power can be supplied to theCT scanner 36. Once again, this enhances the integrity of theCT scanner 36 and improves the scanning results. - Following the CT scan of the
patient 36, theCT scanner 36 can be placed back against the front wall such that thepin connectors receptacles vehicle 32 is now ready for delivery of the patient 58 to a hospital or other treatment facility. Thestretcher 46 can also be lowered and locked to thefloor 44 of thepatient compartment 34 during such travel. This will maintain both theCT scanner 36 in the patient 58 in a safe condition during travel. -
FIG. 6 shows thepin connector 48. Each of the pin connectors associated with theCT scanner 36 of the present invention will have a similar configuration. Thepin connector 48 includes abody 76 that includes anaperture 78 adjacent the rearward end thereof.Aperture 78 will be suitable for receiving the frame member of the CT scanner therein. Apin 80 projects forwardly of thebody 76. Thepin 80 has apointed end 82 that can easily guide into the receptacle. Abracket 84 extends upwardly from thebody 76 so as to secure the rear end of thepin 80 thereto.Bracket 84 has a generally U-shaped configuration and is affixed by fasteners to thebody 76. Thepin 80 includes ashoulder 86 adjacent to thebracket 84.Shoulder 86 provides an abutment surface against the receptacle. -
FIG. 7 is an exploded view of thepin connector 48. Thebody 76 has a U-shaped slot 88 formed adjacent the rearward end thereof. The U-shaped slot 88 serves to define a portion of theaperture 78. Anotherbracket 90 also includes aU-shaped slot 92 that faces the U-shaped slot 88 of thebody 72. During installation, the U-shaped slot 88 can be placed over the arcuate frame member of the CT scanner. TheU-shaped slot 92 can then be placed on an opposite side of the arcuate frame member of the CT scanner. When thebracket 90 is joined to thebody 72 through the use offasteners 94, the U-shaped slot 88 and theU-shaped slot 92 will define theaperture 78 and rigidly secure thebody 70 to the arcuate frame member. A similar construction is located at the forward end of thebody 72. Afurther bracket 96 can be mounted to correspond with the forward end of thebody 72. This also defines anaperture 98 which can receive the other arcuate frame member of the CT scanner. Fasteners 100 will serve to secure thefurther bracket 96 to the forward end of thebody 72 so as to lock over the arcuate frame member of the CT scanner. Thebracket 84 is illustrated as also attached by fasteners 100 to thebody 72 into thebrackets 96. Thepin 80 is shown as having a millednotch 102 formed across a chord of the circumference of thepin 80. Thisnotch 102 is suitable for engaging with the quick-release lock of the receptacle. Abolt 104 can be fastened to thepin 80 so as to rigidly affixed thepin 80 against thebracket 84. -
FIG. 8 shows the orientation of thevarious receptacles front wall 40 of thepatient compartment 34. In particular, can be seen that thereceptacle 54 is at an elevation greater than thereceptacle 56.Receptacle 108 is at the same elevation asreceptacle 54 but spaced horizontally away fromreceptacle 54. Similarly, thereceptacle 110 is at the same elevation as thereceptacle 56 but spaced from thereceptacle 56. Thereceptacle 56 is adjacent to aside wall 112 of the vehicle. The orientation of thereceptacles receptacle receptacles CT scanner 36. This configuration facilitates the stability of the CT scanner during travel and serves to minimize the effect of vibrations on the CT scanner during the movement of the emergency vehicle. It can be seen inFIG. 8 that each of thereceptacles release lock 114. -
FIG. 9 is an exploded view of thereceptacle 54.Receptacles receptacle 54.Receptacle 56 has the quick-release lock 114 removed therefrom.Receptacle 54 includes a squaretubular body 116 having anopening 118 on the top thereof. Ahex head 120 is mounted to analuminum coupling 122 at theopening 118. The quick-release lock 114 includes ahandle 124 extending transversely outwardly thereof. Ashank 126 of the quick-release lock 114 will extend downwardly into the interior of the squaretubular body 116. Abushing 128 includes the pin-receivinghole 130 at the forward end thereof. Thebushing 128 is in the nature is formed of a Nylatron™ material. Thebushing 128 is fitted into theopen end 132 of the squaretubular body 116. The squaretubular body 116 can be connected to apanel 134. Agusset 136 can be affixed to thepanel 134 and to the squaretubular body 116 so as to secure the square tubular body.Suitable fasteners 138 are provided so as to fasten thepanel 134 to thefront wall 40 of the vehicle. - When the pin is inserted into the
hole 130, thehandle 124 can be rotated for one quarter rotation so as to lock the pin in position within the squaretubular body 116. The reverse turning of thehandle 124 and the quick-release lock 140 can serve to release the pin from its locked configuration. The use of thebushing 128 further facilitates insulation of the CT scanner against shocks and vibrations. The outer end of thebushing 128 will generally bear against theshoulder 86 of thepin 80. This configuration has been found to enhance resistance against vibration and shock absorption in a superior manner to other techniques. -
FIG. 10 illustrates theside wall 72 of the vehicle. InFIG. 10 , the strap-receivingelement 70 can be seen. The strap-receivingelement 70 is in the nature of a D-ring 150 that can be anchored bybracket 152 to theside wall 72. The D-ring 150 can serve to rigidly secure a strap thereto. This facilitates the ability to fix a position of the stretcher in an elevated position within the interior of the patient compartment. -
FIG. 11 shows thefloor 44 of thepassenger compartment 44. In particular, there is shown afirst chock 66 and asecond chock 170 that are affixed in spaced relationship to each other and to thefloor 44. Thechock 66 includes aslot 172 which opens at a rear of thechock 66. Thechock 170 also includes aslot 174 that opens at a rear of thechock 170. Each of theslots chocks CT scanner 36. In normal use, the forward wheels of the stretcher will move into each of theslots chocks chocks -
FIG. 12 is a perspective view of thechock 66. Thechock 66 includes a pair offlanges sides slot 172. The raised sides 184 will serve to prevent the wheels of the stretcher from pivoting. Theflanges floor 44 through the use of appropriate fasteners. -
FIG. 13 is an illustration of a unique feature to he present invention. In particular, theside wall 72 of thevehicle 32 is shown. Adoor 200 is hingedly mounted to theside wall 72 so as to allow entrance into an interior of thepatient compartment 34. Importantly, it can be seen that there is ashelf 202 that extends generally transversely outwardly of thedoor 200. Aslide mechanism 204 allows theshelf 202 to move between a position bearing against thedoor 200 and the position shown inFIG. 13 . Theshelf 202 is particularly configured so as to receive the various control instruments, computers, displays and other items thereon. As such, during the operation of the CT scanner the technician can operate and monitor the CT scanner from a location outside of thepatient compartment 34. This serves to minimize exposure of the worker to the radiation of the CT scanner. It assures that the technician is positioned a sufficient distance from the CT scanner so as to avoid any adverse health effects therefrom. After the CT scan is carried out, theshelf 202 can be lowered and locked in positioned for further travel. - The foregoing disclosure and description of the invention is illustrative and explanatory thereof. Various changes in the details of the illustrated construction can be made within the scope of the appended claims without departing from the true spirit of the invention. The present invention should only be limited by the following claims and their legal equivalents.
Claims (20)
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