Roll- in push cot

[0001] Embodiments of the invention encompassed by the present application relate generally to rescue beds, and in particular, to transportable rescue beds providing better distribution of the weight of the bed.

[0002] Transportable emergency beds are used to hold the patient on a stretcher, which stretcher is placed on a frame equipped with wheels. The patient can be transported on the bed by one person at its front or rear end, or by more people on a frame equipped with wheels. Conventional emergency beds have a stretcher removed from a wheeled transporter, in which the stretcher can be removed from the frame to move the patient in a horizontal position. The design legs must be released by the operator supporting the weight of the bed and stretcher. Thus, it would be desirable to provide the operator with support in the form of a leg release mechanism. [0003] In a first aspect of the invention there is provided a transportable folding bed in accordance with claim 1.

[0004] In an embodiment of the invention, the transportable folding bed further comprises a rear carrier slid into a pair of sliding rails located at the rear of the frame, the sliding movement of the rear carrier defining a path of movement; a pair of rear hinged components, rotatably, with a pair of rear legs at one end of a pair of rear hinged components and slid into the sliding rear load-bearing element at the opposite end of the pair of rear hinged components, with the bed being loaded onto the first surface causing steam to fold rear elements fastened with hinges and causes the rear support element to slide along the path of movement; and the central release lever connected to the front cylinder, the movement of the front support activates the front cylinder and pulls the central release lever, and a mounting bolt designed to block the rear legs by sliding into the rear carrier, the fastening bolt being extended by the supporting operator part of the weight of the transportable bed.

[0005] In another aspect, the invention provides a method of operating a transportable folding bed for transportation on a first surface, the method comprising first loading the roll-up bed onto the first surface, resulting in the automatic release of at least one front leg; then the bed is rolled onto the first surface, moving the front support member towards the front actuator in such a way that the movement of the front support member activates the front actuator releasing the central release lever, thus initiating the same rear leg release; at least partially supporting the weight of the bed to disengage the locking mechanism of at least one hind leg and load the bed to move the rear support member, thereby activating the reset actuator that allows the rolled bed to be completely loaded on the first surface.

[0006] The following detailed description of specific embodiments of the present invention may best be understood by reading it together with the following drawings, in which structures are indicated with numbers describing the elements, wherein:

Fig. 1A is a side view of the roll-in bed before loading onto the platform.

Fig. 1B is a side view of the front actuator at the bottom of the bed in the loading position of Fig. 1A.

Fig. 1C is a perspective view of the central control box at the bottom of the bed in the loading position of Fig. 1A.

Fig. 1D is a perspective view of the reset actuator on the underside of the bed in the loading position of Fig. 1A.

Fig. 2A is a side view of the roll-in bed after the front legs have started folding in accordance with one or more versions of the present invention.

Fig. 2B is a perspective view of the front support member approaching the front cylinder in the loading position of Fig. 2A.

Fig. 3A is a side view of the rolled-in folded carriage until the front carrier partially engages the front actuator in accordance with one or more versions of the present invention.

Figure 3B is a perspective view of the front support member partially engaging the front actuator in the loading position of Figure 3A.

Figure 3C is a perspective view of the central control box in the loading position of Figure 3A.

Fig. 4A is a side view of the rolled-in folded carriage until the front actuator has been engaged, but before the weight is taken over by the operator in accordance with one or more versions of the present invention.

Fig. 4B is a close-up view of the front carrier completely engaging the front actuator in the loading position of Fig. 4A.

Fig. 4C is a close-up view of a spring-driven mechanical cable connecting the central release lever to the front actuator in the loading position of Fig. 4A.

Fig. 5 is a perspective view of the fastening bolt turned outward.

Fig. 6A is a side view of the roll-in bed when the operator takes over the weight and the rear carrier moves by turning the fastening bolt so that it automatically releases the hind legs.

Fig. 6B is a close-up view of the mechanical loading system with the fastening pins extended in the loading position of Fig. 6A.

Fig. 6C is a close-up view of the rear support member approaching the reset cylinder in the loading position of Fig. 6A.

Fig. 7A is a side view of the roll-in bed fully loaded on the platform.

Fig. 7B is a close-up view of the middle control box and the mounting bolt extended, the roll-in bed fully loaded as shown in Fig. 7A.

Fig. 7C is a close-up view of the reset actuator in the loading position of Fig. 7A.

Figure 8 is a bottom view of the mounting pin forming an interference fit on the curved projection of the rear support member.

fig. 9 is another variant of the roll-in bed.

Figure 10 is a perspective view of the stretcher that can be attached to the roll-in bed of Figure 9.

Figure 11A is a perspective view of the alternative center control box in the loading position of Figure 1A.

Figure 11B is a perspective view of the alternative central control box in the loading position of Figure 3A in which the pivot latch coupled to the central release lever moves the slide.

Figure 11C is a perspective view of the alternative center control box in the loading position of Figure 4A with the release lever fully engaged and the fastening pin not released.

Figure 11D is a perspective view of the alternative center control box in the loading position of Figure 5 with the mounting pin turned outward.

Figure 11E is a perspective view of the alternative center control box in the loading position of Figure 6A with the mounting pins extended.

Figure 11F is a perspective view of the alternative center control box in the loading position of Figure 7A in which the roll-in bed is fully loaded on the surface.

[0007] Embodiments of the invention shown in the drawings are illustrative and are not intended to limit the invention as defined by the claims. In addition, the individual characteristics of the drawings and invention will become clearer and better understood in the light of the detailed description.

[0008] With reference to Figures 1A and 1D, the roll-in transportable bed 10 consists of a support frame 40 having two sides extending from the front end 41 to the rear end 42, and a pair of sliding rails 45 located in the sides; a pair of front legs 20 and a pair of rear legs 30 pivotally connected to the frame 40. The bed 10 can be combined with other devices for transporting the patient, such as the stretcher shown in Fig. 10. Other devices designed to transport patients, such as back plates, backs, wheelchairs and other means of transport can be used together with the bed. In one version of the invention, the front legs 20 may be connected to the sliding rails 45. The front legs 20 are shown at an angle in Fig. 1A; however, various shapes and curvatures are considered. In addition, as the drawings show, the front legs 20 have wheels at the lower end.

In the case of Fig. 2B, the roll-in bed 10 furthermore has a front support member 24 slid into a pair of rails 45 on the fore end 41 of the support frame 40, the sliding movement of the front support 24 defining the path of movement. The front carrier 24 can also be positioned between the respective front hinged members 22. The front carrier 24 can be a beam, frame, latch, horizontal structure or any other movable element. This is not shown, but one may consider the situation where the front hinged components 22 can be positioned elsewhere on the support frame 40. Furthermore, although the drawings show the movement of the front legs 20 as inward rotation, the sliding movement of the front legs 20 can also be considered. In addition, rotation of the front legs 20 outwards may also be considered.

[0010] In the case of Fig. 1A and 2A, the retractable bed 10 has a pair of front hinged components 22 pivotally connected to a pair of front legs 20 at one end of the pair of front hinged components 22 and slidably connected to the front carrier 24 at the opposite end of the front pair of hinged components 22 wherein loading the bed 10 onto the first surface folds the front pair of hinged elements 22 and moves the movement of the front support member along the path (as shown in Fig. 2B). For other versions of the invention (not shown), the front hinged components may be located elsewhere on the support frame. For example, the front hinged components 22 may be slidably connected to a pair of rails 45. The sliding pair of front hinged components 22 can be configured to slide in rails 45 and slide inward as the front legs 20 fold.

[0011] In Fig. 1B, optionally, the central support beam 80 may extend between the front end 41 and the rear end 42 and it is positioned between the rails 45. The central support beam 80 may be an internal beam with one or more attachment pins 120, as described below.

[0012] In Figures 1C, 3B, 3C, 11A and 11B, the slide-in bed 10 also has a mechanical loading system 100 connected to the support frame 40. The loading system 100 connects a pair of front legs 20 to a pair of rear legs 30, the mechanical system loading 100 consists of a front actuator 70 located on the support frame 40 on a trajectory defined by the front support element 24 such that the movement of the front support element 24 actuates the front actuator 70 (as shown in FIG. 3B), thereby initiating the release of the hind legs 30, as shown in FIG. 4A. For the actuator 70, various components may be used, such as a lever, switch, button, and so on.

[0013] In Figures 1C and 3C, the mechanical loading system 100 may also include a central release lever 102 connected to the front actuator 70. As shown in the drawings, the central release lever 102 may be located in a central control box located on the cantilever beam 80. In the case of the versions of the inventions shown in Fig. 3C and 4C, the central release lever 102 is connected to the front actuator 70 by means of the front cable 104 and spring element 112. When the front actuator 70 is actuated, the spring 112 is compressed, and this compression of the spring prevents the middle release lever from moving until the locking pin 120 detaches from the tooth 114 due to the action of the user receiving a portion of the weight as described below. When the weight is removed from the rear legs of the bed, the spring tension 112 is released, and the central release lever can move, thereby enabling the slider 105 to be actuated. The central control box 110 also has a hinged latch 108, actuated by a reset actuator as described below. Alternative versions of the middle control box 110 are shown in Figures 11A and 11B.

[0014] In the case of Fig. 6C and 8, the rear support 34 can be slidably connected to a pair of rails 45 at the rear end 42 of the support frame 40, the rear support optionally having a support with curved projections and a mechanical loading system consisting of a mounting pin 120, the mounting pin 120 it can optionally be configured to block the hind legs 30, creating interference matching with the curved projections of the rear support 34 bracket, as shown in Figure 8. The configuration of the boomerang bracket 35 is illustrated by the example of the rear support bracket, but this bracket can be any type of bracket forming interference matching. The bracket may also have teeth or internal projections 114 configured to form interference matching.

[0015] In Figures 6A and 6C, in yet another embodiment of the invention, the interference fit between the attachment bolt 120 and the bracket may optionally be disconnected by an operator supporting a portion of the weight of the trolley 10, actuating the release of the rear legs 30. Optionally, the rear support 34 can define the path for the reset cylinder 130 located on the support frame 40 in such a way that the movement of the rear support 34 in combination with the folding of the rear legs 30 activates the reset cylinder 130. Activation of the reset cylinder 130 blocks the roll-in bed 10 when the rear 30 and front legs 20 of the bed 10 are folded, as shown in Fig. 6A. In the case of figs 7B, rear nipple 34 engages the reset actuator 130, pulling the pivot latch 108. When the pivot latch 108 is pulled, the slide wedge 109 slides into the central control box 110 and under the central release lever 102, which will be raised. At this point, the middle release lever 102 will rise above the post on the upper slider 105. Then, the central release lever 102 no longer controls the fixing pins 120, and the pins 120 will return to the default upper position, as shown in Fig. 7B. The reset actuator 130 may be various components such as a switch, lever, button, and so on. Although the movement of the front legs 20 and rear legs 30 has been depicted as inward rotation, outward rotation, displacement, and the like can also be considered. In one version of the invention, the hind legs 30 can be connected to the rails 45. The hind legs 30 are shown curved in Fig. 1A; however, for the hind legs 30 other shapes and curves can also be considered. In addition, as the figure shows, the hind legs sit at the lower ends of the wheel. The rear carrier 34 can also be positioned between respective slidable rear hinged members 32. The rear support member 34 may be a beam, frame, latch, horizontal structure, or any other movable element.

[0017] In Fig. 9, at the front end 41 of the support frame 40 there may optionally be at least one ballast sheave 60 with the lever released by the pivot mechanism 146 optionally located at the front end 41 of the support frame 40, wherein the release lever pivot mechanism 146 unlocks at least one front balancing disc 60, allowing rotation of the at least one front balancing disc. Wheel locks 150 are designed to prevent the wheelchair from rolling while the patient is being transported and some medical procedures. To release the 150 lock, the operator should raise the lever with his foot.

[0018] In Figures 1A and 9, optionally, at least one intermediate ballast sheave 55 can be placed on a support frame 40, between the front 20 and hind legs 30. In yet another version, at least one ballast sheave 50 is located at the rear end 42 of the support frame 40, where optionally, the release latch of the swivel lock 146 unlocks at least one rear ballast sheave 50, allowing the rotation of the at least one rear ballast sheave 50. In yet another version of the invention, the roll-in bed 10 has at least one ballasting disc 50 at the rear end 42 and at least one front ballasting disc 60 at the front end 41.

In Fig. 9, in yet another embodiment of the invention, the bed 10 may have a front leg control handle 140 located at the front end 41 of the support frame 40, the front leg control handle 140 releasing the locking mechanism allowing the front legs to fold. twenty. Another option is the rear leg control handle 141 located at the rear end 42 of the support frame 40, the rear leg control handle 141 releasing the locking mechanism for folding the rear legs 30. The front leg handle 140 and the rear leg handle 141 can be a button, lever, switch or other mechanical element releasing the locking mechanism. The locking mechanism may have a suitable electronic or mechanical fixing mechanism to keep the legs upright.

[0020] Again, in the case of Figure 9, the bed 10 may optionally have a front leg lock switch 142 located at the front end 41 of the support frame 40, the front leg lock switch 142 engaging the front leg lock mechanism 20 in the folded position. Another option is the rear leg lock switch 143 located at the rear end 42 of the support frame 40, wherein the rear leg lock switch 143 engages the rear leg locking mechanism 30 in the folded position. The front leg lock switch 142 and the rear leg lock switch 143 may be a button, lever, switch or other mechanical locking device for the legs.

[0021] In Figures 9 and 10, the bed 10 may also optionally have a release lever 144 located at the rear end 42 of the support frame 40, the release lever 144 allowing the stretcher to be removed from the bed 10. The bed 10 may also optionally have a pair pressed latches 148, mechanically mounted on the rigging element connected to the sides of the bed, the latches 148 securing the stretcher (as shown in Fig. 10) or other device for moving patients connected to the bed 10. The press latch of the stretcher 148 grips and fixes the stretcher 170 to the bed 10. To engage the latches 148, the stretcher 170 rolls onto the bed until the latched latches 148 click in. To release the latch, the operator presses the release handle of stretcher lock 144 at the end of bed control 10. Both operators then move the stretcher slightly towards the loading end of the bed to pull the striker pins 160 out of the locks. The operator then releases the lever and grips the stretcher 170 with both hands before both operators lift and remove the stretcher 170 from the transporter.

[0022] In general, in the case of Figs. 2A-7A, the method of handling the roll-in bed 10 for transporting it to the first surface is illustrated by the example of one version of the invention. In Figures 1B and 1D, when the bed 10 is fully extended and set to its preloading position, the front actuator 70 (Fig. 1B) and the reset actuator 130 (Fig. 1D) are deactivated until loading, in accordance with one embodiment of the invention. In the case of figs 2A, the method includes loading the roll-in bed 10 onto the first surface, whereby at least one front leg 20 is automatically released. In the case of Figs. 3A-3C, the method further includes continuously loading the roll-in bed 10 onto the first surface to move the front support member 24 towards the front actuator 70 (Fig. 3B), such that the movement of the front support member 24 actuates the front actuator 70 pulling the central release lever 102 (Fig. 4B).

[0023] In Fig. 4C, the fastening pin 120 cannot rotate, which prevents the central release lever 102 from moving, and the energy is stored in the spring mechanism 112 connected to the front actuator 70. The fastening pin 120 remains at rest within the curved projections 114 .

[0024] In the case of Fig. 6A, the raising of the rear end 42 of the slide bed 10 is carried out by the operator taking over the weight of the bed 10. The operator will have to slightly raise the bed to "rock" the front end 41 of the support frame 40 using the intermediate balance wheels 55 as rotation . In the case of figs 5, when the operator slightly raises the rear of the bed 10, the rear carrier 34 moves slightly forward, which allows the spring mechanism 112 of the mechanical loading system 110 to overcome the interference fit between the mounting pin 120 and the curved projections 114.

The fastening pin 120 can then be turned to the open position, as shown in Fig. 6B. This movement of the fixing pin 120 allows the hind legs 30 to be released.

[0025] It can be imagined that the raising of the bed by the operator can be eliminated by using a fastening element holding the front axle pointing down, in any way, by means of a movable lock or a rolling or sliding element on a loaded axle moving through a stationary channel mounted on the surface of the fastener.

[0026] In Fig. 6A, the hind legs 30 can then be folded back onto the loading surface 200. As the hind legs 30 folds, the rear carrier 34 approaches the reset cylinder 130, as shown in Fig. 6C. Figure 7A shows the bed 10 completely folded and loaded onto the first surface 200. In Figure 7C, while the rear legs 30 are swinging backwards when fully loaded, the rear carrier 34 moves and activates the reset cylinder 130. In Fig. 7B, the fastening pin has been reset.

[0027] In Fig. 7B, the activation of the reset actuator 130 pulls the central release lever 102. The movement of the central release lever 102 causes the swing latch 108 to open, which allows the slider 105 to disengage. Furthermore, when the central release lever 102 does not control already the positions of the fixing pins 120, the pins are reset, as shown in Fig. 7B.

[0028] As stated above, another example of a mechanical loading system 100 is shown in Figs. 11A-11F. This version includes a central release lever 102, a rocking latch 108, and an inserted pin 106. The inserted pin 106 moves in rail 107 during loading and unloading of the bed. It is also part of a spring mechanism (not shown) which is connected to the fixing pin 120. In the case of Fig. 11A, the mechanical loading system 100 is deactivated. In Fig. 11B, the central release lever 102 is pulled through the front cable 104. A rocking latch 108, coupled to the central release lever 102, moves the slide pin 106 in the rail 107 in response to the movement of the central release lever 102. As shown in Fig. 11C, the central release lever has been fully pulled, but the securing pin 120 connected to the central release lever 102 by the spring mechanism has not been released because the pin 120 has interference interference with the teeth or curved projections 114 of the boomerang bracket 35. In the case of Fig. 11D, when the operator slightly raises the back of the bed 10, the rear carrier 34 moves slightly forward, which allows the spring mechanism inside the mechanical loading system 100 to overcome the interference fit between the mounting pin 120 and the curved projections 114 of the bracket 35. The mounting pin 120 can then turn to open position as shown in figure 11E. Finally, the movement of the central release lever 102 actuates the spring mechanism to reset the fastening pins engaged on the teeth, as shown in Figure 11F.

[0029] The bed can also be unloaded vice versa. When the operator begins to move the bed 10 from the folded position to the first surface 200, the hind legs 30 swing forward. In connection with the movement of the rear legs 30, the rear support 34 moves away from the reset cylinder 130. This turns off the central reset lever 102. At the same time, the rocking latch 108 continues to disengage, thereby enabling the fastening bolts to pivot outward as the rear carrier moves forward. According to this finding, the attachment bolts 120 can act as a full lock when the rear carrier 34 is moved backwards. At this unloading stage, as shown in Figure 8A, the weight of the bed 10 can be safely supported by the rear legs 30. As the operator continues to unload the bed 10 from the first surface 200, the front legs 20 swing forward, disengaging the front actuator 70 and returning the swing tab 108 to its original position, as shown in Figure 1C. At this point, the bed 10 is completely unfolded and ready for loading onto the first surface 200 again.

[0030] It should also be noted that terms such as "more preferably", "generally", "commonly" and "typically" are not used in the text to limit the scope of the claimed invention or the implication that certain functions are of key importance or are important for the structure or operation of the claimed invention. These terms are solely intended to emphasize alternative or additional functions that may or may not be used in a given version of the present invention.

[0031] Having described the present invention in detail and referring to its specific embodiments, it will become apparent that changes and modifications thereof are possible without departing from the scope of the invention as defined in the claims set out below. More specifically, although some aspects of the present invention have been identified as preferred or particularly preferred, it can be imagined that the present invention is not necessarily limited to these preferred aspects of the invention.

[0032] Citation of any documents should not be understood as an acknowledgment that the prior art includes the present invention.