CA1188264A - Elevating apparatus - Google Patents
Elevating apparatusInfo
- Publication number
- CA1188264A CA1188264A CA000399573A CA399573A CA1188264A CA 1188264 A CA1188264 A CA 1188264A CA 000399573 A CA000399573 A CA 000399573A CA 399573 A CA399573 A CA 399573A CA 1188264 A CA1188264 A CA 1188264A
- Authority
- CA
- Canada
- Prior art keywords
- platform
- lever
- transporting
- extending
- arm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000003028 elevating effect Effects 0.000 title abstract description 11
- 230000007246 mechanism Effects 0.000 claims description 16
- 230000003319 supportive effect Effects 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims 5
- 230000002401 inhibitory effect Effects 0.000 claims 1
- 241001465754 Metazoa Species 0.000 abstract description 10
- 238000011282 treatment Methods 0.000 description 6
- 238000001356 surgical procedure Methods 0.000 description 3
- 235000004443 Ricinus communis Nutrition 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 208000010392 Bone Fractures Diseases 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 206010061245 Internal injury Diseases 0.000 description 1
- 208000006670 Multiple fractures Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000002297 emergency surgery Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229920000136 polysorbate Polymers 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000036642 wellbeing Effects 0.000 description 1
Landscapes
- Accommodation For Nursing Or Treatment Tables (AREA)
Abstract
Abstract An elevating device suitable for elevating people and animals from a ground surface has a first frame to be sup-ported on the ground surface, a second frame to support the person or animal to be elevated, a scissor-action linkage between the frames and a device for actuating the linkage to adjust the height of the second frame relative to the first frame. The arrangement is relatively simple and inexpensive.
Description
The present invention relates to an elevating apparatus particularly a~though not exclusively suitable for elevating articles, people or other animals from a first position adjacent a ground surface to a second position remote from said ground surface.
Prior art devices for elevating people or animals from a first lowered position to a second elevated position have generally been designed for a single specifi~ purpose and generally have been confined to a specific range of adjustment between a lowered and an elevated position. F'or example, a patient handling stretcher/trolley for ambulances may comprise a wheeled trolley adapted for adjustment between a lowered position at which a patient can be lifted onto a trolley with minimal lifting or handling and a second position to facilitate transfer to an ambulance. Such devices may also be suitable for conveyance of a patient from an ambu]ance to a hospital bed or operating table but suffer two main disadvantages. Firstly, such devices generally have a minimum height adjustment of say 200 - 250mm from a ground surface which necessitates a considerable lift of a patient from a ground surface to the supporting surface of the trolley. Secondly, such devices generally only permit a limited height adjustment to permit transfer to an ambulance.
Although such a trolley can be used to permit transfer of a patient about a hospital, the patient must ultimately be lifted yet a second or third time to enable trans~er of the patient to a bed or operating table at a more convenient height for treatment. For patients suffering broken bones and/or internal injuries, such additional handling for lifting purposes may create further injuries or prejudice the well-being of the patient.
Other prior art patient elevating apparatuses may comprise elevatable surgical tables, elevatable beds or the like but generally, all such prior art devices suffer the disadvantage that they are complex in construction, expensive ~- 3 -and the useful ranqe of elevation of a patien-t supporting surface is limited in overal.l range.
The present invention aims to overcome -the dis-advantages of prior ar-t patient elevating devlces by providing a simple and inexpensive eleva-ting device adjustable, from a first position adjacent a ground surface to a second position remote from said ground surface whereby -treatment of a patient can be effected with a minimum of handling.
According to the present invention there is provided an elevatable platform assembly comprising:-a base member;
a support platform;
a scissor linkage mechanism connecting said base member and said support platform, said scissor linkage mechanism including first and second link members pivotally interconnected intermediate their respective ends, each said first and second link members having a pivotally mounted end and a slidably mounted end, at least one of said link members having a projection extendi.ng from a normally lower end to form a lever fulcrumed about said lower end; and, lever actua-ting means operable -to rotate said lever about a fulcrum to selectively elevate or lower said support platform relative to said base member According to another aspect of the inven-tion there is provided a lifting table comprising:-an upper supportive platform;
a lower platform located below said upper pla-tform for positioning upon a floor surface;
a generally X-shaped scissors linkage mechanism extending be-tween and connected to said upper and lower platforms and including a first link member having one end slidably mounted and a second end pivotally affixed and a second link member having one end pivotally affixed and a second end slidably mounted; said first and second link . .
-- 3a -members having crossing mid-por-tions with a pivot ex-tending there-through;
a lever arm aEfixed to and ex-tending from said lower end of said second link member;
means extending between said lower platform and said lever arm and operable to vary the dis-tance therebetween and cause raising an lowering of said upper pla-tform relative to said lower platform.
Preferably the first frame portion comprises a base frame and preferably the second frame comprises a support frame adapted to support an animal, human or the like.
Preferably the scissor-action linkage is adapted to permit lowering of said support frame to a first position adjacent a ground surface and selective elevation to a second position at a height suitable -to permit trea-tment of the patient.
Preferably the means adapted -to co-act with -the scissor-ac-tion linkage is hydraulic or pneumatic adjustmen-t means to permit selective adjustment of the support frame between said first position and said second position.
Suitably, the first frame may comprise fixed or steerable wheels such as castored wheels to permit movement over a ground surface of the device according to the invention.
Preferably the support frame is mounted on a pivotable base to permit ro-tation thereof relative to said base frame about a generally upright axis. Suitably the support frame is angularly adjustable relative to said base ,~ ,;,, frame. ~uitably the device accordin~ to the invention is adapted to support sui-tab~e surgical treatment apparatus such as instrument trays, i.v. poles, stands for electronic instruments etc.
A preferred embodiment of the invention will now be described with reference to the accompanying drawings in which:-FIG. 1 illust~ates a side elevation of the apparatus in a partly extended position;
FIG. 2 illustrates a side elevation of the apparatus in an extended position;
FIG. 3 illustrates an end elevation in the partly extended position;
FIG. 4 illustrates an end elevation in an elevated positoni and, FIG. 5 illustrates a top plan view of the bottom frame.
In ~IG. 1, a base ~rame 1 is provided with castored wheels 26 and an hydraulic jacking device 3. Hydraulic cylinder 3 is provided with a foot or lever operated pump 4 and a release valve operable by the lever 5. Mounted to the base frame 1 is a top frame 2 which is connected to the base frame by a scissor linkage 6 shown partly in phantom.
In FIG. 2, the scissor linkage 6 of FIG. 1 is more clearly shown in the extended position. Scissor arms 7 and 8 are pivotally connected at a suitable position 9 adjacent the mid point of axms 7 and 8. The lower point of arm 7 and the upper part of arm 8 are pivotally connected to base frame 1 and top frame 2 respectively via cross arms (not shown) mounted in suitable bearings 10 and 11 in base and top frame respectively.
The upper end of arm 7 and lower end of arm 8 respectively are provided with cross arms (not shown) mounted at each end in roller bearings 12 and 13 respectively adapted to travel in slide channels (not shown) on the innerside of top and bottom frames 2 a~d 1 respectively.
The rod or shaft 1~ of hydraulic cylinder 3 is pivotally attached to a pivota~le attachment point 7a extending from scissor arm 7 at a position distal from bearing 10 which acts as a fulcrum to permit elevation of top frame 2. Castor wheels 26 are mounted on base frame 1.
FIGS. 3 and 4 illustrate end elevations of FIGS. 1 and 2 respectively in the lowered and elevated positions.
In FIG. 5 the lower end of scissor arm 7 is shown attached to base frame 1 by a cross arm 11 pivotally mounted in bearings 12 attached to base fxame 1. The lower end of arm 8 is attached to a cross arm 13 mounted on roller bearings 14 in slide channels 15. Mounting plates 16 are provided for attachment of castor wheels 26 by/ for e~ample bolts 17. Upper frame 2 (not shown in plan) is of a generally similar construction to lower frame 1 in the provision of pivot points and slide channels.
In an alternative embodiment of the invention, the hydraulic cylinder is provided with a pivoted lifting arm, not unlike that of an hydraulic trolley jack for motor vehicles. The end of the arm remote from the pivot point is fitted with a roller or friction pad which contacts the underside of scissor arm 7 at a point distal to the pivot point of the scissor arm. Actuation of ~he hydraulic cylinder raises the jack arm and thus scissor arm 7 to elevate the apparatus accoraing to the invention.
The device according to the present invention is particularly useful in the treatment of injured pexsons or animals.
The device is preferably constructed of ligh~weight materials such as aluminium or light gauge stainless steel and is preferably provided with lifting handles and a suitable supporting surface on top frame 2. The elevating means ~ay be a hydraulic or pneumatic cylinder.
At an accident scene, an injured person or animal may be lifted a minimal height onto the fully lowered device and then transferred to an ambulance or like vehicle using the device as a stretcher. On arrival at a hospital or veterinary clinic the device may be removed from the ambulance or like vehicle and the device partia~ly elevated to permit wheeling into a surgery. The device may then be elevated to a height suitable to permit evaluation of the patient or animal and if emergency surgery is required, the device may be used as an operating table simply by attaching appropriate instrument trays, i.v. drip poles, electronic monitoring instrument supports etc. to brackets mounted on top frame 2. Following surgery, the device may then be wheeled to a bedside (or ~or animals, a holding cage) where the height oE top frame ~ is adjusted to permit direct transfer of the patient without lifting either up or down from the device according to the inventionO
In other embodiments of the invention, the device may be adapted to permit rotation of the top frame relative to the bottom frame about an substantially upright axis and the top frame may be adjustable to permit tilting about its major and/or minor axes. In yet a further embodiment, the top frame may comprise a number of hinged portions to permit angular adjustment thereof.
As shown in phantom in FIG. 2 the device may include one or more angularly adjustable portions in association with the top frame. ~hese may simply comprise one or more hingable top surfaces with adjustable locking hinges or alternatively the desired angular adjustment may be achieved by an adjustable prop means. Alternatively the entire top frame section can include one or more angularly adjustable hinged sections which may be selectively angularly adjustable by any suitable conventional means.
In yet a further embodiment of the invention, the scissor-action linkage may comprise three arms. For example, in the embodiment shown in the drawings, instead of arm 7 comprising a single arm pivotally connected to one side of arm 8, the linkage may comprise two arms 7, one on each side of centrally mounted arm 8 or alternatively it may comprise two arms 8, one on each side of centrally mounted arm 7.
In yet a further embodiment, the pivot point of the scissor linkage may be longitudinally adjustable relat ve to say arm 8 in a slotted aperture therein. A
control means such as a compression screw or a camming device may be used to selectively vary the pivot point relative to arm 8 whereby upon elevation of the table top 2, the top 2 undergoes a selective degree of tilting to facilitate treatment of a patient.
The major advantage of the present invention is the range of elevation permissible by the height adjustment means. None of the prior art devices contemplate a range of height adjustment from a few centimetres above a ground surface to a height greater than one metre.
The device according to the present invention clearly provides a most versatile device for the handling, transport and treatment of injured, aged and infirm persons or injured animals. In addition, it will be apparent that the device according to the invention may be modified to suit a variety of purposes wherein a wide range of elevation is required e.g. as a portable lifting device in warehouses, vehicles etc. for the elevation of articles.
It will be readily apparent to a s~illed addressee that many modifications may be made ~o the elevating device without departing from the spirit and scope of the present invention.
Prior art devices for elevating people or animals from a first lowered position to a second elevated position have generally been designed for a single specifi~ purpose and generally have been confined to a specific range of adjustment between a lowered and an elevated position. F'or example, a patient handling stretcher/trolley for ambulances may comprise a wheeled trolley adapted for adjustment between a lowered position at which a patient can be lifted onto a trolley with minimal lifting or handling and a second position to facilitate transfer to an ambulance. Such devices may also be suitable for conveyance of a patient from an ambu]ance to a hospital bed or operating table but suffer two main disadvantages. Firstly, such devices generally have a minimum height adjustment of say 200 - 250mm from a ground surface which necessitates a considerable lift of a patient from a ground surface to the supporting surface of the trolley. Secondly, such devices generally only permit a limited height adjustment to permit transfer to an ambulance.
Although such a trolley can be used to permit transfer of a patient about a hospital, the patient must ultimately be lifted yet a second or third time to enable trans~er of the patient to a bed or operating table at a more convenient height for treatment. For patients suffering broken bones and/or internal injuries, such additional handling for lifting purposes may create further injuries or prejudice the well-being of the patient.
Other prior art patient elevating apparatuses may comprise elevatable surgical tables, elevatable beds or the like but generally, all such prior art devices suffer the disadvantage that they are complex in construction, expensive ~- 3 -and the useful ranqe of elevation of a patien-t supporting surface is limited in overal.l range.
The present invention aims to overcome -the dis-advantages of prior ar-t patient elevating devlces by providing a simple and inexpensive eleva-ting device adjustable, from a first position adjacent a ground surface to a second position remote from said ground surface whereby -treatment of a patient can be effected with a minimum of handling.
According to the present invention there is provided an elevatable platform assembly comprising:-a base member;
a support platform;
a scissor linkage mechanism connecting said base member and said support platform, said scissor linkage mechanism including first and second link members pivotally interconnected intermediate their respective ends, each said first and second link members having a pivotally mounted end and a slidably mounted end, at least one of said link members having a projection extendi.ng from a normally lower end to form a lever fulcrumed about said lower end; and, lever actua-ting means operable -to rotate said lever about a fulcrum to selectively elevate or lower said support platform relative to said base member According to another aspect of the inven-tion there is provided a lifting table comprising:-an upper supportive platform;
a lower platform located below said upper pla-tform for positioning upon a floor surface;
a generally X-shaped scissors linkage mechanism extending be-tween and connected to said upper and lower platforms and including a first link member having one end slidably mounted and a second end pivotally affixed and a second link member having one end pivotally affixed and a second end slidably mounted; said first and second link . .
-- 3a -members having crossing mid-por-tions with a pivot ex-tending there-through;
a lever arm aEfixed to and ex-tending from said lower end of said second link member;
means extending between said lower platform and said lever arm and operable to vary the dis-tance therebetween and cause raising an lowering of said upper pla-tform relative to said lower platform.
Preferably the first frame portion comprises a base frame and preferably the second frame comprises a support frame adapted to support an animal, human or the like.
Preferably the scissor-action linkage is adapted to permit lowering of said support frame to a first position adjacent a ground surface and selective elevation to a second position at a height suitable -to permit trea-tment of the patient.
Preferably the means adapted -to co-act with -the scissor-ac-tion linkage is hydraulic or pneumatic adjustmen-t means to permit selective adjustment of the support frame between said first position and said second position.
Suitably, the first frame may comprise fixed or steerable wheels such as castored wheels to permit movement over a ground surface of the device according to the invention.
Preferably the support frame is mounted on a pivotable base to permit ro-tation thereof relative to said base frame about a generally upright axis. Suitably the support frame is angularly adjustable relative to said base ,~ ,;,, frame. ~uitably the device accordin~ to the invention is adapted to support sui-tab~e surgical treatment apparatus such as instrument trays, i.v. poles, stands for electronic instruments etc.
A preferred embodiment of the invention will now be described with reference to the accompanying drawings in which:-FIG. 1 illust~ates a side elevation of the apparatus in a partly extended position;
FIG. 2 illustrates a side elevation of the apparatus in an extended position;
FIG. 3 illustrates an end elevation in the partly extended position;
FIG. 4 illustrates an end elevation in an elevated positoni and, FIG. 5 illustrates a top plan view of the bottom frame.
In ~IG. 1, a base ~rame 1 is provided with castored wheels 26 and an hydraulic jacking device 3. Hydraulic cylinder 3 is provided with a foot or lever operated pump 4 and a release valve operable by the lever 5. Mounted to the base frame 1 is a top frame 2 which is connected to the base frame by a scissor linkage 6 shown partly in phantom.
In FIG. 2, the scissor linkage 6 of FIG. 1 is more clearly shown in the extended position. Scissor arms 7 and 8 are pivotally connected at a suitable position 9 adjacent the mid point of axms 7 and 8. The lower point of arm 7 and the upper part of arm 8 are pivotally connected to base frame 1 and top frame 2 respectively via cross arms (not shown) mounted in suitable bearings 10 and 11 in base and top frame respectively.
The upper end of arm 7 and lower end of arm 8 respectively are provided with cross arms (not shown) mounted at each end in roller bearings 12 and 13 respectively adapted to travel in slide channels (not shown) on the innerside of top and bottom frames 2 a~d 1 respectively.
The rod or shaft 1~ of hydraulic cylinder 3 is pivotally attached to a pivota~le attachment point 7a extending from scissor arm 7 at a position distal from bearing 10 which acts as a fulcrum to permit elevation of top frame 2. Castor wheels 26 are mounted on base frame 1.
FIGS. 3 and 4 illustrate end elevations of FIGS. 1 and 2 respectively in the lowered and elevated positions.
In FIG. 5 the lower end of scissor arm 7 is shown attached to base frame 1 by a cross arm 11 pivotally mounted in bearings 12 attached to base fxame 1. The lower end of arm 8 is attached to a cross arm 13 mounted on roller bearings 14 in slide channels 15. Mounting plates 16 are provided for attachment of castor wheels 26 by/ for e~ample bolts 17. Upper frame 2 (not shown in plan) is of a generally similar construction to lower frame 1 in the provision of pivot points and slide channels.
In an alternative embodiment of the invention, the hydraulic cylinder is provided with a pivoted lifting arm, not unlike that of an hydraulic trolley jack for motor vehicles. The end of the arm remote from the pivot point is fitted with a roller or friction pad which contacts the underside of scissor arm 7 at a point distal to the pivot point of the scissor arm. Actuation of ~he hydraulic cylinder raises the jack arm and thus scissor arm 7 to elevate the apparatus accoraing to the invention.
The device according to the present invention is particularly useful in the treatment of injured pexsons or animals.
The device is preferably constructed of ligh~weight materials such as aluminium or light gauge stainless steel and is preferably provided with lifting handles and a suitable supporting surface on top frame 2. The elevating means ~ay be a hydraulic or pneumatic cylinder.
At an accident scene, an injured person or animal may be lifted a minimal height onto the fully lowered device and then transferred to an ambulance or like vehicle using the device as a stretcher. On arrival at a hospital or veterinary clinic the device may be removed from the ambulance or like vehicle and the device partia~ly elevated to permit wheeling into a surgery. The device may then be elevated to a height suitable to permit evaluation of the patient or animal and if emergency surgery is required, the device may be used as an operating table simply by attaching appropriate instrument trays, i.v. drip poles, electronic monitoring instrument supports etc. to brackets mounted on top frame 2. Following surgery, the device may then be wheeled to a bedside (or ~or animals, a holding cage) where the height oE top frame ~ is adjusted to permit direct transfer of the patient without lifting either up or down from the device according to the inventionO
In other embodiments of the invention, the device may be adapted to permit rotation of the top frame relative to the bottom frame about an substantially upright axis and the top frame may be adjustable to permit tilting about its major and/or minor axes. In yet a further embodiment, the top frame may comprise a number of hinged portions to permit angular adjustment thereof.
As shown in phantom in FIG. 2 the device may include one or more angularly adjustable portions in association with the top frame. ~hese may simply comprise one or more hingable top surfaces with adjustable locking hinges or alternatively the desired angular adjustment may be achieved by an adjustable prop means. Alternatively the entire top frame section can include one or more angularly adjustable hinged sections which may be selectively angularly adjustable by any suitable conventional means.
In yet a further embodiment of the invention, the scissor-action linkage may comprise three arms. For example, in the embodiment shown in the drawings, instead of arm 7 comprising a single arm pivotally connected to one side of arm 8, the linkage may comprise two arms 7, one on each side of centrally mounted arm 8 or alternatively it may comprise two arms 8, one on each side of centrally mounted arm 7.
In yet a further embodiment, the pivot point of the scissor linkage may be longitudinally adjustable relat ve to say arm 8 in a slotted aperture therein. A
control means such as a compression screw or a camming device may be used to selectively vary the pivot point relative to arm 8 whereby upon elevation of the table top 2, the top 2 undergoes a selective degree of tilting to facilitate treatment of a patient.
The major advantage of the present invention is the range of elevation permissible by the height adjustment means. None of the prior art devices contemplate a range of height adjustment from a few centimetres above a ground surface to a height greater than one metre.
The device according to the present invention clearly provides a most versatile device for the handling, transport and treatment of injured, aged and infirm persons or injured animals. In addition, it will be apparent that the device according to the invention may be modified to suit a variety of purposes wherein a wide range of elevation is required e.g. as a portable lifting device in warehouses, vehicles etc. for the elevation of articles.
It will be readily apparent to a s~illed addressee that many modifications may be made ~o the elevating device without departing from the spirit and scope of the present invention.
Claims (19)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A patient supporting and transporting platform assembly adapted for use as a stretcher and operating table comprising:
a base member;
a support platform;
a scissor linkage mechanism connecting said base member and said support platform, said scissor linkage mechanism including first and second link members pivotally intercon-nected intermediate their respective ends and located generally on the longitudinal axis of the apparatus, each said first and second link members having a pivotally mounted end and a slidably mounted end, at least one of said link members having a projection extending from a normally lower end to form a lever fulcrumed about said lower end; and, lever actuating means operable to rotate said lever about a fulcrum to selectively elevate or lower said support platform relative to said base member.
a base member;
a support platform;
a scissor linkage mechanism connecting said base member and said support platform, said scissor linkage mechanism including first and second link members pivotally intercon-nected intermediate their respective ends and located generally on the longitudinal axis of the apparatus, each said first and second link members having a pivotally mounted end and a slidably mounted end, at least one of said link members having a projection extending from a normally lower end to form a lever fulcrumed about said lower end; and, lever actuating means operable to rotate said lever about a fulcrum to selectively elevate or lower said support platform relative to said base member.
2. A patient supporting and transporting platform assembly as claimed in claim 1 wherein said fulcrum comprises a pivo-tally mounted end of said first link member or said second link member.
3. A patient supporting and transporting platform assembly as claimed in claim 1 wherein said fulcrum comprises a slid-ably mounted end of said first link member or said second link member.
4. A patient supporting and transporting platform assembly as claimed in claim 1, 2 or 3 wherein said lever actuating means comprises a fluid actuated piston and cylinder assembly pivotally connected at one end to said base member and pivo-tally connected at its other end to said lever.
5. A patient supporting and transporting platform assembly adapted for use as a stretcher and operating table comprising:
a base member;
a support platform;
a scissor linkage mechanism connecting said base member and said support platform, said scissor linkage mechanism including first and second link members pivotally interconnected intermediate their respective ends and located generally on the longitudinal axis of the apparatus, each said first and second link members having a pivotally mounted end and a slidably mounted end, at least one of said link members having a projection extending from a normally lower end to form a lever fulcrumed about said lower end; and lever actuating means operable to rotate said lever about a fulcrum to selectively elevate or lower said support platform relative to said base member wherein in its fully lowered position, the support platform rests on said base member.
a base member;
a support platform;
a scissor linkage mechanism connecting said base member and said support platform, said scissor linkage mechanism including first and second link members pivotally interconnected intermediate their respective ends and located generally on the longitudinal axis of the apparatus, each said first and second link members having a pivotally mounted end and a slidably mounted end, at least one of said link members having a projection extending from a normally lower end to form a lever fulcrumed about said lower end; and lever actuating means operable to rotate said lever about a fulcrum to selectively elevate or lower said support platform relative to said base member wherein in its fully lowered position, the support platform rests on said base member.
6. A patient supporting and transporting platform assembly as claimed in claim 5 wherein the assembly in its fully lowered position contains the scissor linkage mechanism and the lever actuating means between the space bounded by an upper surface of said support platform and the lower edges of said base member.
7. A patient supporting and transporting platform assembly as claimed in claim 5 wherein said support platform includes a support surface rotatable about an upright pivotal axis for rotation relative to said base member.
8. A patient supporting and transporting platform assembly as claimed in claim 5 wherein said support platform includes a supporting surface adapted for selective angular adjustment relative to said support platform.
9. A patient supporting and transporting platform assembly adapted for use as a stretcher and operating table comprising:
an upper supportive platform;
a lower platform located below said upper platform for positioning upon a floor surface;
a general X-shaped scissors linkage mechanism extending between and connected to said upper and lower platforms and including a first link member having one end slidably mounted and a second end pivotally affixed and a second link member having one end pivotally affixed and a second end slidably mounted; said first and second link members being located generally on the longitudinal axis of the apparatus and having crossing mid-portions with a pivot extending there-through;
a lever arm affixed to and extending from said lower end of said second link member;
means extending between said lower platform and said lever arm and operable to vary the distance therebetween and cause raising and lowering of said upper platform relative to said lower platform.
an upper supportive platform;
a lower platform located below said upper platform for positioning upon a floor surface;
a general X-shaped scissors linkage mechanism extending between and connected to said upper and lower platforms and including a first link member having one end slidably mounted and a second end pivotally affixed and a second link member having one end pivotally affixed and a second end slidably mounted; said first and second link members being located generally on the longitudinal axis of the apparatus and having crossing mid-portions with a pivot extending there-through;
a lever arm affixed to and extending from said lower end of said second link member;
means extending between said lower platform and said lever arm and operable to vary the distance therebetween and cause raising and lowering of said upper platform relative to said lower platform.
10. A patient supporting and transporting platform assembly adapted for use as a stretcher and operating table comprising:
an upper platform for support of a patient;
a lower platform located below said upper platform and for positioning upon a floor surface;
a scissors linkage mechanism extending between and connected to said upper and lower platforms and including a first link member having an upper end pivotally affixed to said upper platform and a lower end pivotally and slidably mounted to said lower platform, and a second link member having an upper end pivotally and slidably mounted to said upper platform and a lower end pivotally affixed to said lower platform, said first and second link members crossing and having a pivotal connection thereat and being located generally on the longitudinal axis of the apparatus;
a lever arm affixed to and extending from said lower end of said second link member;
a power fluid arm pivotally connected to and extending between said lower platform and said lever arm and extensible and retractible to cause raising and lowering of said upper platform with respect to said lower platform; and pump means associated with said arm to supply pres-surized fluid thereto.
an upper platform for support of a patient;
a lower platform located below said upper platform and for positioning upon a floor surface;
a scissors linkage mechanism extending between and connected to said upper and lower platforms and including a first link member having an upper end pivotally affixed to said upper platform and a lower end pivotally and slidably mounted to said lower platform, and a second link member having an upper end pivotally and slidably mounted to said upper platform and a lower end pivotally affixed to said lower platform, said first and second link members crossing and having a pivotal connection thereat and being located generally on the longitudinal axis of the apparatus;
a lever arm affixed to and extending from said lower end of said second link member;
a power fluid arm pivotally connected to and extending between said lower platform and said lever arm and extensible and retractible to cause raising and lowering of said upper platform with respect to said lower platform; and pump means associated with said arm to supply pres-surized fluid thereto.
11. A patient supporting and transporting platform assembly set forth in claim 10 wherein:
said scissors linkage mechanism is generally X-shaped and said first and second link members swing relative to each other for raising and lowering of said upper platform.
said scissors linkage mechanism is generally X-shaped and said first and second link members swing relative to each other for raising and lowering of said upper platform.
12. A patient supporting and transporting platform assembly set forth in claim 10 wherein:
a pivot connects said ram to said lower arm and said pivot is at a position lower than said lower end of said link member.
a pivot connects said ram to said lower arm and said pivot is at a position lower than said lower end of said link member.
13. A patient supporting and transporting platform assembly set forth in claim 10 wherein:
said lower platform has a generally planar, obstruction-free upper surface, a frame and an underside, said lower plat-form having first and second end portions;
said ram has one end pivotally connected to said lower platform frame at said first end; and said ram is positioned entirely below said upper surface.
said lower platform has a generally planar, obstruction-free upper surface, a frame and an underside, said lower plat-form having first and second end portions;
said ram has one end pivotally connected to said lower platform frame at said first end; and said ram is positioned entirely below said upper surface.
14. A patient supporting and transporting platform assembly set forth in claim 10 wherein:
said lower platform has opposite ends spaced sides, and a generally planar surface;
an elongate opening extends through said lower platform and said scissors linkage mechanism has lower end portions extending through said opening;
said ram is mounted at one of said ends of said lower platform and extends under said planar surface; and, said pump means is mounted at said one of said ends of said lower platform.
said lower platform has opposite ends spaced sides, and a generally planar surface;
an elongate opening extends through said lower platform and said scissors linkage mechanism has lower end portions extending through said opening;
said ram is mounted at one of said ends of said lower platform and extends under said planar surface; and, said pump means is mounted at said one of said ends of said lower platform.
15. A patient supporting and transporting platform assembly set forth in claim 14 wherein:
said pump means includes a pump lever extending above said planar surface of said lower platform;
said pump lever has a pad thereon for foot actuation for raising of said upper platform.
said pump means includes a pump lever extending above said planar surface of said lower platform;
said pump lever has a pad thereon for foot actuation for raising of said upper platform.
16. A patient supporting and transporting platform assembly set forth in claim 15 wherein:
said pump means includes a check valve connected to a valve lever;
said valve lever extends outwardly of said pump means for foot actuation for lowering of said upper platform.
said pump means includes a check valve connected to a valve lever;
said valve lever extends outwardly of said pump means for foot actuation for lowering of said upper platform.
17. A patient supporting and transporting platform assembly adapted for use as a stretcher and operating table comprising:
an upper platform having a planar, patient supportive upper surface and an underside including track means;
a lower platform positioned below and aligned with said upper platform and having a generally planar, obstruction-free upper surface for said upper platform to rest upon and an underside;
wheels mounted to said lower platform for movement over a floor surface;
a track means mounted in said lower platform underside;
a scissor linkage mechanism extending between and connected to said upper and lower platforms to provide straight upward and downward movement of said upper platform relative to said lower platform; said scissor linkage mechanism including a centre link member having an upper end pivotally affixed to said upper platform underside and a lower end slidable in said lower platform track means, and spaced link members with said centre link member extending therebetween; said spaced link members having upper ends slidable in said upper platform track means and lower ends pivotally affixed to said lower platform underside and being located generally on the longitudinal axis of the apparatus; said centre link member and said spaced link members having pivotally interconnected mid-portions;
said lower ends of said spaced link members being mounted below said lower platform upper surface and having bell crank arms extending angularly therefrom and supporting a rod extending transversely between said bell crank arms;
a power fluid arm mounted in said lower platform and aligned with said lower platform track means, said ram having one end pivotally connected to said lower platform and a second end pivotally connected to said rod, said rod being extensible and retractible to cause upward and downward swinging of said spaced link members and raising and lowering of said upper platform; said ram being mounted entirely below said lower platform upper surface for concealment and whereby said upper platform may rest against said lower platform; and a manual pump and relief valve mounted on said lower platform adjacent said ram.
an upper platform having a planar, patient supportive upper surface and an underside including track means;
a lower platform positioned below and aligned with said upper platform and having a generally planar, obstruction-free upper surface for said upper platform to rest upon and an underside;
wheels mounted to said lower platform for movement over a floor surface;
a track means mounted in said lower platform underside;
a scissor linkage mechanism extending between and connected to said upper and lower platforms to provide straight upward and downward movement of said upper platform relative to said lower platform; said scissor linkage mechanism including a centre link member having an upper end pivotally affixed to said upper platform underside and a lower end slidable in said lower platform track means, and spaced link members with said centre link member extending therebetween; said spaced link members having upper ends slidable in said upper platform track means and lower ends pivotally affixed to said lower platform underside and being located generally on the longitudinal axis of the apparatus; said centre link member and said spaced link members having pivotally interconnected mid-portions;
said lower ends of said spaced link members being mounted below said lower platform upper surface and having bell crank arms extending angularly therefrom and supporting a rod extending transversely between said bell crank arms;
a power fluid arm mounted in said lower platform and aligned with said lower platform track means, said ram having one end pivotally connected to said lower platform and a second end pivotally connected to said rod, said rod being extensible and retractible to cause upward and downward swinging of said spaced link members and raising and lowering of said upper platform; said ram being mounted entirely below said lower platform upper surface for concealment and whereby said upper platform may rest against said lower platform; and a manual pump and relief valve mounted on said lower platform adjacent said ram.
18. A patient supporting and transporting platform assembly set forth in claim 17 including:
a stop secured to said lower platform and having lever means therewith operable to remove weight from some of said wheels to stop movement over said floor surface.
a stop secured to said lower platform and having lever means therewith operable to remove weight from some of said wheels to stop movement over said floor surface.
19. A patient supporting and transporting platform assembly adapted for use as a stretcher and operating table comprising:
a rectangular, patient supportive upper platform having a substantially planar upper surface, opposite ends and an underside frame having spaced, longitudinal channels forming tracks;
a rectangular lower platform of substantially equal dimensions to said upper platform and having a generally planar, obstruction-free upper surface, opposite ends and an underside frame having spaced longitudinal channels forming tracks;
wheels mounted on said lower platform for movement over a ground surface;
stop means mounted on said lower platform and engageable with said ground surface for selectively inhibiting movement;
a scissor linkage mechanism extending between and connected to said upper and lower platforms to provide straight upward and downward movement of said upper platform relative to said lower platform; said scissor linkage mechanisms including a centre link arm having an upper end pivotally affixed to said upper platform frame and a lower end having wheels rotatably connected thereto and received in said lower platform tracks;
and spaced link arms being located generally on the longi-tudinal axis of the apparatus and having upper ends with wheels rotatably connected thereto and received in said upper platform tracks and lower ends pivotally affixed to said lower platform frame; said centre link arm and said spaced link arms crossing and having pivotally interconnected mid-portions;
bell crank arms connected to and extending angularly from said spaced link arms lower ends, said bell crank arms having a rod extending therebetween and positioned below said spaced link arms lower ends;
an extensible and retractible power fluid arm posi-tioned in said lower platform below and concealed by the surface thereof and having one end pivotally affixed to said frame and a second end pivotally affixed to said rod for swinging said spaced link arms upwardly and downwardly upon respective extension and retraction of said arm; and, a foot operated pump mounted on said lower platform at one end of said lower platform adjacent said arm and having a cover concealing said pump;
a relief valve mounted at said one end of said lower platform and having a foot operable lever thereon to release pressure in said arm and facilitate lowering of said upper platform against said lower platform.
a rectangular, patient supportive upper platform having a substantially planar upper surface, opposite ends and an underside frame having spaced, longitudinal channels forming tracks;
a rectangular lower platform of substantially equal dimensions to said upper platform and having a generally planar, obstruction-free upper surface, opposite ends and an underside frame having spaced longitudinal channels forming tracks;
wheels mounted on said lower platform for movement over a ground surface;
stop means mounted on said lower platform and engageable with said ground surface for selectively inhibiting movement;
a scissor linkage mechanism extending between and connected to said upper and lower platforms to provide straight upward and downward movement of said upper platform relative to said lower platform; said scissor linkage mechanisms including a centre link arm having an upper end pivotally affixed to said upper platform frame and a lower end having wheels rotatably connected thereto and received in said lower platform tracks;
and spaced link arms being located generally on the longi-tudinal axis of the apparatus and having upper ends with wheels rotatably connected thereto and received in said upper platform tracks and lower ends pivotally affixed to said lower platform frame; said centre link arm and said spaced link arms crossing and having pivotally interconnected mid-portions;
bell crank arms connected to and extending angularly from said spaced link arms lower ends, said bell crank arms having a rod extending therebetween and positioned below said spaced link arms lower ends;
an extensible and retractible power fluid arm posi-tioned in said lower platform below and concealed by the surface thereof and having one end pivotally affixed to said frame and a second end pivotally affixed to said rod for swinging said spaced link arms upwardly and downwardly upon respective extension and retraction of said arm; and, a foot operated pump mounted on said lower platform at one end of said lower platform adjacent said arm and having a cover concealing said pump;
a relief valve mounted at said one end of said lower platform and having a foot operable lever thereon to release pressure in said arm and facilitate lowering of said upper platform against said lower platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000399573A CA1188264A (en) | 1982-03-26 | 1982-03-26 | Elevating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000399573A CA1188264A (en) | 1982-03-26 | 1982-03-26 | Elevating apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1188264A true CA1188264A (en) | 1985-06-04 |
Family
ID=4122428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000399573A Expired CA1188264A (en) | 1982-03-26 | 1982-03-26 | Elevating apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1188264A (en) |
-
1982
- 1982-03-26 CA CA000399573A patent/CA1188264A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |