CA2040898A1 - Apparatus for transferring invalid patients - Google Patents
Apparatus for transferring invalid patientsInfo
- Publication number
- CA2040898A1 CA2040898A1 CA 2040898 CA2040898A CA2040898A1 CA 2040898 A1 CA2040898 A1 CA 2040898A1 CA 2040898 CA2040898 CA 2040898 CA 2040898 A CA2040898 A CA 2040898A CA 2040898 A1 CA2040898 A1 CA 2040898A1
- Authority
- CA
- Canada
- Prior art keywords
- patient
- chair
- cantilever shaft
- horizontal
- chassis
- 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.)
- Abandoned
Links
Landscapes
- Invalid Beds And Related Equipment (AREA)
Abstract
ABSTRACT
A hand-push type mobile apparatus for transferring an invalid patient, adapted such that reception of the patient thereinto from a horizontal resting surface, and discharge of the patient therefrom back onto another resting surface, can be effected without involving lift-up of the patient, henceforth with least amount of physical strength and effort required by the attendant personnel; said mobile transfer apparatus in combination comprising: a chair, a horizontally disposed cantilever shaft, chassis, castors, and linear actuator means; said chair horizontally and pivotedly supported on said cantilever shaft; said cantilever shaft attached, fixedly in horizontal directions, but slidably in the vertical direction, to the top of the post erected vertically on said chassis; said chassis provided thereunder with castors to permit the attendant to freely move the apparatus assembly around on the floor; whereby said receiving chair may be adjusted to assume any angular positions between the up-right and fully-reclined positions around the cantilever shaft, while also engageable with any horizontal surface over and above thereof by virtue of the fact that one side of the apparatus is fully open and indented allowing the chair to pass over the horizontal surface to reach the patient thereby eliminating the need for the patient to be lifted up for transfer.
A hand-push type mobile apparatus for transferring an invalid patient, adapted such that reception of the patient thereinto from a horizontal resting surface, and discharge of the patient therefrom back onto another resting surface, can be effected without involving lift-up of the patient, henceforth with least amount of physical strength and effort required by the attendant personnel; said mobile transfer apparatus in combination comprising: a chair, a horizontally disposed cantilever shaft, chassis, castors, and linear actuator means; said chair horizontally and pivotedly supported on said cantilever shaft; said cantilever shaft attached, fixedly in horizontal directions, but slidably in the vertical direction, to the top of the post erected vertically on said chassis; said chassis provided thereunder with castors to permit the attendant to freely move the apparatus assembly around on the floor; whereby said receiving chair may be adjusted to assume any angular positions between the up-right and fully-reclined positions around the cantilever shaft, while also engageable with any horizontal surface over and above thereof by virtue of the fact that one side of the apparatus is fully open and indented allowing the chair to pass over the horizontal surface to reach the patient thereby eliminating the need for the patient to be lifted up for transfer.
Description
E'IELD O~ INVE~TION
The present invention relates generally to an apparatus for transferring a patient, and specifically to an improved mobile apparatus o~ which the receiving surface of the chair is adapted to directly reach the back of the patient lying on a horizontal resting surface such as bed. One lateral side of said apparatus is fully indented, in~o which the be~ is allowed to fully engage, permitting the chair to pass over and above the bed surface, whereby transfer of t'ne patient from a lying position on the bed surface to the sitting position in the receiving chair of the apparatus, or vice versa, can be efEecte~ by simple relatively effortless turn-over operation by the care personnel.
DI~CUSSION OF P~IOR ART
Heretofore, there have been a number of inventions for transferring patients from one resting surface to another, these resting surfaces including beds, operation tables, chairs, etc.
Lamsonr in U.S. Patent No. 4,737.997, disclosed rather familiar transferring equipment for invalids, which incorporates a detachable chair frame that may be 2 ~
placed behind an invalid lying on its side. IJ.S~ Patent No. 2,587,068 issued to Saunders shows a wheelchair that converts to a flat bed, whereas U.S. Patent No. 3,116,492 to Christensen describes a split sea~ and split back-rest that may he half-way slid beneath the patient from each side.
Most of these prior art inventions are adapte~ to work such that, in the transEer of the patient from the bed surface for example to the apparatus' receiving surface, or vice versa, the closest that the said receiving surface can be brought towards the patient is only to the edge of the bed. For this reason, one inevitable drawback is commonly shared among these prior art inventions, which is that the apparatus' transfer surface cannot directly reach the patient, whereby it is necessitated that the patient be manually lifted up and moved over by the care personnel to be transferred.
Such task of moving the patient over to a transfer equipment can be accomplished normally with minimal effort if the patient is at the least mobile being able to offer some assistance to the care personnel. However, the same task of transferring the patient requires a great deal of physical strength and effort on the part of the care personnel if the patient's incapacitation is 2 ~
to the e~tent where the patient can offer little or no help at all.
OB~E~S OF T~ PRESENT INYENTIO~
Accordingly, it is an object of this invention to provide an apparatus for conveniently transferring a substantially incapacitated patient from one resting surface to another with minimum risk o~ having the attendant strain themselves.
It is another object of this invention to provide an economic apparatus for transferring an invalid patient, which may be operated by one care personnel only.
It is still another object of this invention to provide a mobile hand-push type geriatric chair for transferring a patient, of which the height and reclining angle can be adjusted to facilitate easy pick-up and discharge of the patient.
Further objects and advantages of this invention will become apparent from a consideration of th~ drawings ensuing description thereo~.
2 ~ 3 ~ .~ 8 D~SCRIPTION OF DR~WINGS
Figure 1 is a side elevation of one preferred embodiment of the claimed apparatus, represented with the chair assembly in its up-right position. Figure 2 is another side elevation showing the apparatus in Figure 1 with the chair in its fully-reclined position to receive or discharge the patient. Figure 3 is the rear view of the apparatus illustrating the cantilever-supported nature of the chair which is intended to keep its one side indented and open for engagement with the bed just over and above the bed surface.
D~TAILED D~SCRIPTIOW AND OP~RATION
In the drawings, 1 is the chair assembly of the apparatus. The frame of said chair assembly, which is preferably of tubular structural steel construction, is provided in the back thereof with a handle 10 whereby the apparatus can be steered and moved by the attendant. The chair assembly is provided with a padded surface 14 adapted for receiving and supporting the patient in the sitting position. With the chair suitably padded and contoured with cushions, the apparatus may also be used as a geriatric chair whereupon the patient can rest.
Also provided on the chair assembly for the optimum comfort of the patient are: a pair of armrests g on both lateral sides of the chair assembly; headrest 15 which is provided with means to adjust the angle as ~ell as the height to allow maximum comfort to the resting patient; and footrest 16 which is provided with a means to adjust the angle also for optimum comfort of the patient. At least one of said pair of armrests 9, however preferably on the side that engages with the bed surface, is constructed to be detachable to effect non-interference in the reception into, and the discharge out of the chair, of the patient. The said chair assembly 1 is hingedly supported on and through the cantilever shaft 2 that is disposed horizontally in the lateral direction relative to the apparatus. One end of the said cantilever shaft 2 is engaged to the top of the vertical post 6 in a manner that is firmly fixed in any horizontal direction but that is slidably adjustable in the vertical direction by means of a hydraulic actuator 4, which is intended for adjusting the height of the chair so that optimal engagement of the apparatus' receiving surface ~ith the bed surface, i.e.
substantially on the level, can be effected for ease in the in the transfer of the patient. The side that is opposite to the said vertical post 6 under the said 2S horizontal cantilever shaft 2 is indented and left unoccupied. This indented open space permits the 9 ~
apparatus to come into deep engagement with the receiving surface such as a bed, provided that the receiving surface has thereunder a clearance suf~icient to let in the apparatus' chassis base 13. The apparatus is provided with another hydraulic actuator 5 which is adapted for controllably adjustiny the reclining angle of the chair assembly 1 in reference to the vertical post 6l at any desired angle between the substantially ~ertical up-right and the substantially horizontal fully~reclined positions to facilitate ease in the reception into and out of the chair, of the patient. For ease in operation, both hydraulic actuators 4 and 5 are powered by a hand-operated type hydraulic power means ~ which is provided with a directional valve 17 adapted for switching the direction in which the pressurized hydraulic oil is deliv~red to either of the two hydraulic actuators 4 or ~. Supporting the entire chair assembly 1 thereupon, the said vertical post 6 is erected fixedly on the chassis 13 which is provided thereunder a set oE castors 11 adapted for ease in moving on the floor.
In order to achieve the transfer of a patient from the bed to the resting surEace oE the apparatus, an attendant may perform the procedures as described in the Eollowing: the patient is laid on its side away from the direction in which the apparatus is to approach; the 2 ~
patient's legs are bent around the knees ~nd withdrawn towards the abdomen resulting in sitting posture in the lying position with body joints at substantially right angle with each other; the chair is fully reclined with its height adjusted to the level of the bed surface; the detachable armrest is removed from the chair assembly;
the apparatus is pushed in its lateral direction into engagement with the bed to the extend that the receiving surface of the chair comes into direct and clos~ contact with the patient's back along the bottom; the patient is grabbed by the bent legs, and is turned over around its side towards the apparatus while it is seen that the angles of the bent legs are substantially maintained, whereby without being lifted up the patient is moved over onto the receiving surface of the apparatus' chair assembly; the armrest removed is attached back onto the chair assembly; the apparatus is pulled out of engage~ent with the bed; the reclined chair is brought back to its up-right position by adjusting means provided; and, finally, the height of the chair may be lowered to a desired level by means of relieving the pressure in the hydraulic actuator 4. The transfer of the patient from the bed surface to the transferring apparatus having been completed, the apparatus with the patient therein may now be moved to another desired location by the attendant.
Transferring the patient back to another resting surface ~0~8 from the apparatus can be achieved by ~ollowing the foregoing procedure in reverse.
It is to be pointed out that, in turning the patient over around its side by the bent legs in the above procedure, a physics principle of lever and torque is being utilized, whereby the patient is turned over onto the chair's receiving surface with only a modest magnitude of force applied to the bent knees. With the above approach, the patient does not necessarily have to be lifted up in order to be moved over into or out of the transfer apparatus, which is a very important point o~
principle with regard to the operation of the present invention.
While the above description contains many specificities, these should not be construed as limitations on the scope of the invention, but rather as an exemplication of preferred embodiments thereof. Many other variations are possible such as modification of the structure, arrangements, proportions, the element materials and components used in the practice of the invention to adapt to specific environments and operation. Accordingly, the scope of the invention should be determined not by the embodiment illustrated, but by the appended claims and their legal equivalents.
The present invention relates generally to an apparatus for transferring a patient, and specifically to an improved mobile apparatus o~ which the receiving surface of the chair is adapted to directly reach the back of the patient lying on a horizontal resting surface such as bed. One lateral side of said apparatus is fully indented, in~o which the be~ is allowed to fully engage, permitting the chair to pass over and above the bed surface, whereby transfer of t'ne patient from a lying position on the bed surface to the sitting position in the receiving chair of the apparatus, or vice versa, can be efEecte~ by simple relatively effortless turn-over operation by the care personnel.
DI~CUSSION OF P~IOR ART
Heretofore, there have been a number of inventions for transferring patients from one resting surface to another, these resting surfaces including beds, operation tables, chairs, etc.
Lamsonr in U.S. Patent No. 4,737.997, disclosed rather familiar transferring equipment for invalids, which incorporates a detachable chair frame that may be 2 ~
placed behind an invalid lying on its side. IJ.S~ Patent No. 2,587,068 issued to Saunders shows a wheelchair that converts to a flat bed, whereas U.S. Patent No. 3,116,492 to Christensen describes a split sea~ and split back-rest that may he half-way slid beneath the patient from each side.
Most of these prior art inventions are adapte~ to work such that, in the transEer of the patient from the bed surface for example to the apparatus' receiving surface, or vice versa, the closest that the said receiving surface can be brought towards the patient is only to the edge of the bed. For this reason, one inevitable drawback is commonly shared among these prior art inventions, which is that the apparatus' transfer surface cannot directly reach the patient, whereby it is necessitated that the patient be manually lifted up and moved over by the care personnel to be transferred.
Such task of moving the patient over to a transfer equipment can be accomplished normally with minimal effort if the patient is at the least mobile being able to offer some assistance to the care personnel. However, the same task of transferring the patient requires a great deal of physical strength and effort on the part of the care personnel if the patient's incapacitation is 2 ~
to the e~tent where the patient can offer little or no help at all.
OB~E~S OF T~ PRESENT INYENTIO~
Accordingly, it is an object of this invention to provide an apparatus for conveniently transferring a substantially incapacitated patient from one resting surface to another with minimum risk o~ having the attendant strain themselves.
It is another object of this invention to provide an economic apparatus for transferring an invalid patient, which may be operated by one care personnel only.
It is still another object of this invention to provide a mobile hand-push type geriatric chair for transferring a patient, of which the height and reclining angle can be adjusted to facilitate easy pick-up and discharge of the patient.
Further objects and advantages of this invention will become apparent from a consideration of th~ drawings ensuing description thereo~.
2 ~ 3 ~ .~ 8 D~SCRIPTION OF DR~WINGS
Figure 1 is a side elevation of one preferred embodiment of the claimed apparatus, represented with the chair assembly in its up-right position. Figure 2 is another side elevation showing the apparatus in Figure 1 with the chair in its fully-reclined position to receive or discharge the patient. Figure 3 is the rear view of the apparatus illustrating the cantilever-supported nature of the chair which is intended to keep its one side indented and open for engagement with the bed just over and above the bed surface.
D~TAILED D~SCRIPTIOW AND OP~RATION
In the drawings, 1 is the chair assembly of the apparatus. The frame of said chair assembly, which is preferably of tubular structural steel construction, is provided in the back thereof with a handle 10 whereby the apparatus can be steered and moved by the attendant. The chair assembly is provided with a padded surface 14 adapted for receiving and supporting the patient in the sitting position. With the chair suitably padded and contoured with cushions, the apparatus may also be used as a geriatric chair whereupon the patient can rest.
Also provided on the chair assembly for the optimum comfort of the patient are: a pair of armrests g on both lateral sides of the chair assembly; headrest 15 which is provided with means to adjust the angle as ~ell as the height to allow maximum comfort to the resting patient; and footrest 16 which is provided with a means to adjust the angle also for optimum comfort of the patient. At least one of said pair of armrests 9, however preferably on the side that engages with the bed surface, is constructed to be detachable to effect non-interference in the reception into, and the discharge out of the chair, of the patient. The said chair assembly 1 is hingedly supported on and through the cantilever shaft 2 that is disposed horizontally in the lateral direction relative to the apparatus. One end of the said cantilever shaft 2 is engaged to the top of the vertical post 6 in a manner that is firmly fixed in any horizontal direction but that is slidably adjustable in the vertical direction by means of a hydraulic actuator 4, which is intended for adjusting the height of the chair so that optimal engagement of the apparatus' receiving surface ~ith the bed surface, i.e.
substantially on the level, can be effected for ease in the in the transfer of the patient. The side that is opposite to the said vertical post 6 under the said 2S horizontal cantilever shaft 2 is indented and left unoccupied. This indented open space permits the 9 ~
apparatus to come into deep engagement with the receiving surface such as a bed, provided that the receiving surface has thereunder a clearance suf~icient to let in the apparatus' chassis base 13. The apparatus is provided with another hydraulic actuator 5 which is adapted for controllably adjustiny the reclining angle of the chair assembly 1 in reference to the vertical post 6l at any desired angle between the substantially ~ertical up-right and the substantially horizontal fully~reclined positions to facilitate ease in the reception into and out of the chair, of the patient. For ease in operation, both hydraulic actuators 4 and 5 are powered by a hand-operated type hydraulic power means ~ which is provided with a directional valve 17 adapted for switching the direction in which the pressurized hydraulic oil is deliv~red to either of the two hydraulic actuators 4 or ~. Supporting the entire chair assembly 1 thereupon, the said vertical post 6 is erected fixedly on the chassis 13 which is provided thereunder a set oE castors 11 adapted for ease in moving on the floor.
In order to achieve the transfer of a patient from the bed to the resting surEace oE the apparatus, an attendant may perform the procedures as described in the Eollowing: the patient is laid on its side away from the direction in which the apparatus is to approach; the 2 ~
patient's legs are bent around the knees ~nd withdrawn towards the abdomen resulting in sitting posture in the lying position with body joints at substantially right angle with each other; the chair is fully reclined with its height adjusted to the level of the bed surface; the detachable armrest is removed from the chair assembly;
the apparatus is pushed in its lateral direction into engagement with the bed to the extend that the receiving surface of the chair comes into direct and clos~ contact with the patient's back along the bottom; the patient is grabbed by the bent legs, and is turned over around its side towards the apparatus while it is seen that the angles of the bent legs are substantially maintained, whereby without being lifted up the patient is moved over onto the receiving surface of the apparatus' chair assembly; the armrest removed is attached back onto the chair assembly; the apparatus is pulled out of engage~ent with the bed; the reclined chair is brought back to its up-right position by adjusting means provided; and, finally, the height of the chair may be lowered to a desired level by means of relieving the pressure in the hydraulic actuator 4. The transfer of the patient from the bed surface to the transferring apparatus having been completed, the apparatus with the patient therein may now be moved to another desired location by the attendant.
Transferring the patient back to another resting surface ~0~8 from the apparatus can be achieved by ~ollowing the foregoing procedure in reverse.
It is to be pointed out that, in turning the patient over around its side by the bent legs in the above procedure, a physics principle of lever and torque is being utilized, whereby the patient is turned over onto the chair's receiving surface with only a modest magnitude of force applied to the bent knees. With the above approach, the patient does not necessarily have to be lifted up in order to be moved over into or out of the transfer apparatus, which is a very important point o~
principle with regard to the operation of the present invention.
While the above description contains many specificities, these should not be construed as limitations on the scope of the invention, but rather as an exemplication of preferred embodiments thereof. Many other variations are possible such as modification of the structure, arrangements, proportions, the element materials and components used in the practice of the invention to adapt to specific environments and operation. Accordingly, the scope of the invention should be determined not by the embodiment illustrated, but by the appended claims and their legal equivalents.
Claims (4)
1) An apparatus for transferring a disabled or infirm patient from one horizontal surface to another, the apparatus comprising:
(a) a chair means which is provided with a padded surface for receiving thereonto a patient in a sitting position, said padded surface consisting of a seat and a back-support;
(b) a horizontally positioned cantilever shaft whereupon said chair means is hingedly supported in a cantilevered manner, whereby said chair means may be rotated with respect to the said cantilever shaft to assume an optimal angle of reclination anywhere between the two extremes of up-right and fully-reclined positions for ease in the reception and discharge of the patient, and also whereby said chair means may pass over the bed surface by up to 20 inches, with the wheeled chassis base beneath, by virtue of the open and indented space under the said chair means;
(c) a vertical post assembly at the top of which one end of the said cantilever shaft is engaged in a manner that is fixed in any horizontal direction but slidably adjustable in the vertical direction by means of a linear actuator; and (d) a chassis means whereupon said vertical post is fixedly erected on one lateral side thereof whereby the other side thereof is left open and unoccupied to permit thereinto the engagement of a receiving surface which is displaced substantially above the floor, said chassis means provided thereunder with a set of castor wheels to permit free movement thereof on the floor;
(e) whereby transfer into the chair means of a patient, who is laid on a horizontal resting surface in a sitting posture on its side away from the apparatus, may be effected by simple turn-over operation of the patient's body by the bent legs, thereby eliminating the need for the patient's body to be vertically lifted up against the gravitational force for transfer which would be far more physically-demanding to the attendant.
(a) a chair means which is provided with a padded surface for receiving thereonto a patient in a sitting position, said padded surface consisting of a seat and a back-support;
(b) a horizontally positioned cantilever shaft whereupon said chair means is hingedly supported in a cantilevered manner, whereby said chair means may be rotated with respect to the said cantilever shaft to assume an optimal angle of reclination anywhere between the two extremes of up-right and fully-reclined positions for ease in the reception and discharge of the patient, and also whereby said chair means may pass over the bed surface by up to 20 inches, with the wheeled chassis base beneath, by virtue of the open and indented space under the said chair means;
(c) a vertical post assembly at the top of which one end of the said cantilever shaft is engaged in a manner that is fixed in any horizontal direction but slidably adjustable in the vertical direction by means of a linear actuator; and (d) a chassis means whereupon said vertical post is fixedly erected on one lateral side thereof whereby the other side thereof is left open and unoccupied to permit thereinto the engagement of a receiving surface which is displaced substantially above the floor, said chassis means provided thereunder with a set of castor wheels to permit free movement thereof on the floor;
(e) whereby transfer into the chair means of a patient, who is laid on a horizontal resting surface in a sitting posture on its side away from the apparatus, may be effected by simple turn-over operation of the patient's body by the bent legs, thereby eliminating the need for the patient's body to be vertically lifted up against the gravitational force for transfer which would be far more physically-demanding to the attendant.
2) An apparatus as defined in claim 1, wherein the chair means is provided with a means such as a hand-cranked screw by which the folded chair means in which the patient rests in a sitting position may be stretched converting into a bed that is substantially flat and horizontal to allow the patient to rest thereupon in a lying position in more comfort.
3) An apparatus as defined in claim 1, wherein the chair means is provided with a pair of armrests on both sides, headrest, and footrest with means for adjusting their heights as well as the angles to allow for the maximum comfort of the patient.
4) An apparatus as defined in claim 3, wherein one of the pair of the arm-rests which is on the indented side of the apparatus is detachable in order to effect non-interference as the patient is being received into or discharged out of the chair means by turn-over operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2040898 CA2040898A1 (en) | 1991-04-23 | 1991-04-23 | Apparatus for transferring invalid patients |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2040898 CA2040898A1 (en) | 1991-04-23 | 1991-04-23 | Apparatus for transferring invalid patients |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2040898A1 true CA2040898A1 (en) | 1992-10-24 |
Family
ID=4147443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2040898 Abandoned CA2040898A1 (en) | 1991-04-23 | 1991-04-23 | Apparatus for transferring invalid patients |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2040898A1 (en) |
-
1991
- 1991-04-23 CA CA 2040898 patent/CA2040898A1/en not_active Abandoned
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |