KR20230026366A - Hospital fall prevention wheelchair - Google Patents

Abstract

A fall prevention wheelchair for hospitals according to the present invention is a wheelchair equipped with armrests on both sides of a seat where user's arms are seated, comprising: a safety bar drawn from the inside of the armrest to the outside and fastened to the user's abdomen; a brake that unlocks wheels when the safety bar is withdrawn in conjunction with the safety bar; and a footrest coupled to a plurality of links interlocking with the safety bar and protruding forward from a lower part of the seat when the safety bar is withdrawn. Therefore, the present invention can provide the fall prevention wheelchair for hospitals capable of preventing accidents of patients related to falls in hospitals and omitting cumbersome operations for operating brakes or footrests.

Description

Fall prevention wheelchair for hospital {HOSPITAL FALL PREVENTION WHEELCHAIR}

The present invention relates to a fall prevention wheelchair for hospital use, and more particularly, to a brake that is unlocked when the safety bar is pulled out in conjunction with a safety bar that is drawn out from the inside of the armrest unit and fastened to the user's abdomen, and a seat when the safety bar is withdrawn. It relates to a fall prevention wheelchair for hospitals to keep the purpose of a wheelchair to safely transport patients through a footrest protruding forward from the lower part of the lower part and to prevent patient safety accidents related to falls in hospitals.

According to the <Patient Safety Accident Report by Topic> published in 2018 by the Institute for Evaluation and Certification of Medical Institutions, a total of 2115 falls were reported to the patient safety reporting learning system from August 2016 to December 31, 2017. Falls are the second leading cause of death due to unintentional injury, especially among the elderly, and the death rate due to falls is nearly 10 times that of other age groups.

In addition to death, falls are a serious problem that significantly reduces quality of life due to severe injuries and their sequelae.

Among all reports of falls, incidents related to walking aids accounted for 10.4%, taking third place after the absence of a guardian (44.8%) and related to auxiliary railings (13.9%). Wheelchairs, which are representative assistive devices that help move patients with reduced muscle strength or gait disturbances in hospitals, are also a risk factor for patients falling.

To prevent this, technologies related to wheelchairs equipped with brakes or footrests are being actively developed. However, since it is a structure that allows getting on and off without fixing the brake or folding the footrest, the wheels may slip or the patient's body may get caught on the footrest when getting on and off. there is.

That is, there is a problem in that the probability of a safety accident related to a fall may increase due to a brake or a footrest for preventing a safety accident.

In addition, since the brakes and footrests must be individually adjusted, it is difficult and complicated for patients and guardians who are not familiar with wheelchairs, and even transfer staff familiar with wheelchairs have to repeatedly bend forward to operate the brakes or footrests.

<Technical literature that forms the background of the invention> is as follows.

Prior art 1: Korean Patent Publication No. 10-2016-0068615 (2016.06.15.)

Prior Art 2: Korean Patent Publication No. 10-2020-0020340 (2020.02.26.)

Prior art 3: Korean Patent Registration No. 10-2153883 (2020.09.09.)

The present invention is to solve the above problems, a brake that is pulled out from the inside of the armrest unit to the outside and interlocked with a safety bar fastened to the user's abdomen to release the lock when the safety bar is withdrawn, and when the safety bar is withdrawn from the lower part of the seat. A fall prevention wheelchair for hospitals that not only fulfills the purpose of a wheelchair to safely transport patients through footrests protruding forward, and prevents patient safety accidents related to falls in hospitals, but also eliminates cumbersome operations to operate brakes or footrests. It is a challenge to provide

The tasks of the present invention are not limited to the tasks mentioned above, and other tasks not mentioned will be clearly understood by those skilled in the art from the description below.

In order to solve the above problems, a hospital fall prevention wheelchair according to one embodiment of the present invention is a wheelchair equipped with armrests on both sides of the seat portion for seating the user's arms, and is drawn out from the inside of the armrests to the outside of the user's abdomen. Safety bar fastened to; and a brake that unlocks a wheel when the safety bar is withdrawn in conjunction with the safety bar.

Here, the brake may be rotated in one direction when the safety bar is withdrawn from the armrest to unlock the wheel, and may be rotated in the opposite direction when the safety bar is restored to an initial position to brake the wheel.

Specifically, the brake, a stopper member whose one side is provided so as to be able to pivot inside the armrest and the other side is in contact with or released from the wheel according to the pivoting; a connecting member connecting the safety bar and the stopper member so that the stopper member pivots by tension generated from the drawn-out safety bar; and a restoring member providing restoring force to the stopper member in a direction in which the stopper member contacts the wheel.

In addition, the brake has a central axis concentric with the rotational axis of the stopper member and is fixed in the armrest so that a restoring force is provided to the stopper member in a direction in which the stopper member contacts the wheel, so that the restoring member is provided on one surface A fixed plate may be further included.

In this case, the restoring member may be a torsion spring having a central end connected to the pivoting shaft of the stopper member and having the other end wound around the central end at equal intervals and fixed to the fixing plate.

On the other hand, the brake, a cylinder member for converting the tension generated as the safety bar is drawn out of the armrest into hydraulic pressure; and a stopping member connected to the cylinder member and unlocking the wheel according to the hydraulic pressure.

At this time, the cylinder member may include a first cylinder connected to the safety bar and converting the tension into hydraulic pressure; and a second cylinder connected to the first cylinder and distributing hydraulic pressure to the stopping member.

In order to solve the above problems, a hospital fall prevention wheelchair according to one embodiment of the present invention is a wheelchair equipped with armrests on both sides of the seat portion for seating the user's arms, and is drawn out from the inside of the armrests to the outside of the user's abdomen. Safety bar fastened to; and a footrest that is coupled to a plurality of links interlocking with the safety bar and protrudes forward from the lower portion of the seat when the safety bar is withdrawn.

At this time, the link includes a first link, one end of which is rotatably connected to the safety bar so that the other end rises rearward from the initial position according to the withdrawal of the safety bar; And one end is rotatably connected to the other end of the first link so that the other end descends backward from the initial position according to the withdrawal of the safety bar, so that the footrest connected to the other end protrudes forward from the lower part of the seat. It may include a second link that does.

Specifically, the link may further include a first guide formed with a cutout groove having an upward inclination from one side to the other side so as to guide the other end of the first link and one end of the second link rising backward from the initial position. can

In addition, the link may further include a second guide having a cutout groove having a downward slope from one side to the other side so as to guide the other end of the second link descending backward from the initial position.

In addition, the link may further include an auxiliary link connected between the second link and the scaffold so that the scaffold protrudes or is drawn forward at a constant height from the ground.

Specifically, the auxiliary link, one end of which is rotatably connected to the other end of the second link, when the other end of the second link descends backward from the initial position, the other end of the third link vertically descends from the initial position; And one end is rotatably connected to the other end of the third link and the footrest is connected to the other end, so that when the other end of the third link descends vertically from the initial position, the other end faces forward from the initial position at a constant height from the ground A protruding fourth link may be included.

In addition, the auxiliary link may further include a third guide having a cutting groove formed long in the vertical direction on the ground to guide the other end of the third link and one end of the fourth link vertically descending from the initial position.

In order to solve the above problems, a hospital fall prevention wheelchair according to one embodiment of the present invention is a wheelchair equipped with armrests on both sides of the seat portion for seating the user's arms, and is drawn out from the inside of the armrests to the outside of the user's abdomen. Safety bar fastened to; a brake interlocking with the safety bar to unlock the wheel when the safety bar is withdrawn; and a footrest that is coupled to a plurality of links interlocking with the safety bar and protrudes forward from the lower portion of the seat when the safety bar is withdrawn.

According to the fall prevention wheelchair for hospital use of the present invention, it is possible to prevent a situation of getting on and off the wheelchair without using the brakes on the wheels of the wheelchair, and a situation in which a person stepping on and getting off of a footrest or getting caught in a footrest can be prevented, so that the patient himself or with the help of a guardian or transfer staff. It has the effect of enabling safer getting on and off when getting on and off in a wheelchair.

At this time, since it is necessary to unfasten the safety bar when getting on and off the vehicle naturally and intuitively, the brake and the footrest are automatically adjusted through the movement of the safety bar, thereby preventing a fall.

In particular, it has the effect of increasing the safety of using wheelchairs for the elderly with reduced muscle strength or walking disabilities, contributing to the formation of a patient safety culture, and resolving the economic burden caused by disputes and increased unnecessary days of hospitalization due to falls.

In addition, patients and guardians can greatly reduce the hassle of remembering and performing procedures for preventing falls every time, and nurses' stress can be reduced due to low educational performance.

That is, by having a wheelchair structure in which a safety bar, a brake, and a footrest are interlocked, a nudge effect in which falls are naturally prevented during use is induced, thereby contributing to patient safety enhancement through prevention of wheelchair falls.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

The above summary, as well as the detailed description of the preferred embodiments of the present application set forth below, will be better understood when read in conjunction with the accompanying drawings. Preferred embodiments are shown in the drawings for the purpose of illustrating the present invention. However, it should be understood that this application is not limited to the precise arrangements and instrumentalities shown.
1 is a view for explaining the overall appearance of a fall prevention wheelchair for a hospital according to an embodiment of the present invention;
2 is a view for explaining a brake of a fall prevention wheelchair for a hospital according to an embodiment of the present invention;
3 is a view for explaining the configuration of a brake of a fall prevention wheelchair for a hospital according to an embodiment of the present invention;
Figure 4 is a view for explaining the position of the stopper member before the safety bar of the fall prevention wheelchair for hospital is withdrawn according to one embodiment of the present invention;
5 is a view for explaining the position of a stopper member when a safety bar of a fall prevention wheelchair for a hospital is withdrawn according to an embodiment of the present invention;
6 is a conceptual diagram for explaining a modified example in which a brake of a fall prevention wheelchair for a hospital is configured in a hydraulic method according to an embodiment of the present invention;
7 is a view for explaining a modified example in which the cylinder member of FIG. 6 is divided into a first cylinder and a second cylinder, a safety bar is connected to one side of the first cylinder, and a stopping member is connected to one side of the second cylinder;
8 is a view for explaining a modified example in which the second cylinder of FIG. 7 is divided into a plurality of parts and the stop member operates on both sides of the wheel;
9 is a view for explaining the configuration of a footrest of a fall prevention wheelchair for a hospital according to an embodiment of the present invention;
10 is a view for explaining how a footrest of a fall prevention wheelchair for a hospital operates by being coupled to a plurality of links interlocked with a safety bar according to an embodiment of the present invention;
11 is a view for explaining a first guide for guiding an operation of a first link and a second link interlocked with a safety bar of a fall prevention wheelchair for a hospital according to an embodiment of the present invention;
12 is a view for explaining a second guide for guiding operations of a second link and a third link interlocked with a safety bar of a fall prevention wheelchair for a hospital according to an embodiment of the present invention;
13 is a view for explaining a third guide for guiding operations of a third link and a fourth link interlocked with a safety bar of a fall prevention wheelchair for a hospital according to an embodiment of the present invention.

Hereinafter, a preferred embodiment of the present invention in which the object of the present invention can be realized in detail will be described with reference to the accompanying drawings. In describing the present embodiment, the same name and the same reference numeral are used for the same configuration, and additional description thereof will be omitted.

1 is a view for explaining the overall appearance of a fall prevention wheelchair for a hospital according to an embodiment of the present invention, FIG. 2 is a view for explaining a brake of the fall prevention wheelchair for a hospital according to an embodiment of the present invention, and FIG. 4 is a view for explaining the configuration of a brake of a fall prevention wheelchair for a hospital according to an embodiment of the present invention, and FIG. Figure 5 is a view for explaining the position of the stopper member when the safety bar of the fall prevention wheelchair for hospital is withdrawn according to one embodiment of the present invention, and Figure 6 is the brake of the fall prevention wheelchair for hospital according to one embodiment of the present invention is a conceptual diagram for explaining a modified example configured by a hydraulic system, and FIG. 7 is a cylinder member of FIG. 6 is divided into a first cylinder and a second cylinder, a safety bar is connected to one side of the first cylinder, and one side of the second cylinder. It is a view for explaining a modification example in which the stop member is connected, and FIG. 8 is a view for explaining a modification example in which the second cylinder of FIG. 7 is divided into a plurality and the stop member operates on both sides of the wheel, and FIG. 9 is the present invention 10 is a view for explaining the configuration of a footrest of a fall prevention wheelchair for hospital use according to an embodiment of the present invention, and FIG. FIG. 11 is a view for explaining a first guide for guiding the operation of a first link and a second link interlocked with a safety bar of a fall prevention wheelchair for a hospital according to an embodiment of the present invention. 12 is a view for explaining a second guide for guiding the operation of the second link and the third link interlocked with the safety bar of the fall prevention wheelchair for hospital according to an embodiment of the present invention, and FIG. 13 is an embodiment of the present invention. It is a view for explaining the third guide for guiding the operation of the third link and the fourth link interlocked with the safety bar of the fall prevention wheelchair for hospital use.

As shown in FIG. 1 , the fall prevention wheelchair 10 for a hospital according to an embodiment of the present invention may largely include a safety bar 100, a brake 200, and a footrest 300.

In the present invention, the fall prevention wheelchair 10 for hospital use according to an embodiment has armrests 2 so that the user's arms can be seated on both sides of the seat 1 for a user including a patient to sit on. It is a wheelchair provided, and can be moved by wheels 3 provided on both sides of the seat portion 1.

At this time, both wheels (3) may be formed outside the armrest portion (2) based on the seat portion (1).

In addition, in the above-described armrest part 2, the patient's arm is stably seated, the safety bar 100 to be described later is drawn in or out, and the brake 200 and the link 320 are connected to the safety bar 100 to interlock. If an internal space can be provided, the external shape, internal shape, and material can be varied, and thus the scope of rights is not limited.

However, if the bar shown in the drawings is described as an example for more detailed description, the armrest portion 2 is provided in a rectangular shape, and an internal space is formed in the longitudinal direction so that the front side and the rear side can be opened.

At this time, the upper surface of the armrest part 2 may have a flat structure so that the arm of the patient seated on the seat part 1 can be seated, but it may be provided to have a structure that is depressed toward the center of the upper surface for stable seating. there is.

At this time, in the case of the armrest portion 2 formed in the form of a rectangle, the corner portion may be provided in a rounded form to prevent injury due to the corner formed between the outer surfaces.

Furthermore, as long as the patient's arm is stably seated and a space can be provided therein, the armrest part 2 can be changed into a shape different from that shown in the drawings, of course.

For example, it will be possible for the armrest part 2 to be provided in the form of a cylinder having an inner space, open on both front and rear sides, and provided in a form in which the upper surface is depressed towards the center, all of which are within the scope of the present invention. Belonging would be taken for granted.

A part of the safety bar 100 may be inserted into the above-described armrest part 2 and then pulled out to be fastened to the user's abdomen.

In detail, the safety bar 100 is provided to be able to be pulled in or out from both armrests 2, and when pulled out, the safety bar 100 is fastened to each other on the user's abdomen side to prevent a user seated in a wheelchair from falling.

For example, the safety bar 100 may be provided with a synthetic plastic material having flexibility that is accommodated inside the armrest portion 2 and then partially drawn out or retracted to the outside of the armrest portion 2. It may be provided with synthetic fibers, such as the webbing of seat belts.

Here, the safety bar 100 has a buckle formed at the end, and the buckle may be fastened to each other at the user's abdomen side.

At this time, the above-mentioned buckle is so that the user can easily fasten from the abdominal side by holding the buckle on one side of the armrest part 2 on both sides after sitting on the seat part 1, and so that it does not enter the inside of the armrest part 2 when the fastening is released. It may be configured, and in some cases, when the fastening is released, the buckle may be drawn into the armrest part 2 so that the safety bar 100 is not visible from the outside.

At this time, the brake 200 interlocks with the safety bar 100, and when the safety bar 100 is withdrawn, the lock of the wheel 3 is released, and when the user releases the buckle fastening of the safety bar 100, the wheel 3 starts again. can play a role in locking the

Specifically, the brake 200 is rotated in one direction when the safety bar 100 is withdrawn from the armrest unit 2 to unlock the wheel 3, and then returns to the initial position when the safety bar 100 is restored. It is rotated in the opposite direction to brake the wheel (3).

For example, when the user grabs the buckle of the safety bar 100 provided on one side of the armrest part 2 and fastens it from the ventral side, the brake 200 connected to the other end of the safety bar 100 is interlocked and the wheel 3 When the lock is released and the user releases the fastening of the buckle again, the wheel 3 can be locked and braked by the restoring force.

As shown in FIG. 2 , in detail, the brake 200 may include a stopper member 220 , a connection member 240 , and a restoration member 260 .

One side of the stopper member 220 may be provided so as to be able to pivot inside the armrest part 2, and the other end may be provided to be in contact with or released from contact with the wheel 3 according to the pivotal rotation.

For example, one side of the stopper member 220 is provided in a circular shape capable of rotating on one side of the inner space of the armrest part 2, and is connected to the safety bar 100 by a connection member 240 to be described later to provide a safety bar ( 100) may be rotated in one direction by withdrawal, or may be rotated in the opposite direction to one direction by a restoring member 260 to be described later.

At this time, the other side of the stopper member 220 may be provided in a form that protrudes long toward the outside of the armrest portion 2 from one side and then bends toward the wheel 3.

In addition, although not shown in the drawing, the part bent toward the wheel 3 on the other side of the stopper member 220 may be further provided with a brake 200 pad to increase the frictional force with the wheel 3, the brake 200 ) The pad may be provided so as to be detachable by sliding on one side of the above-described bent portion so that it can be easily replaced.

Next, the connecting member 240 may connect the safety bar 100 and the stopper member 220 so that the stopper member 220 can be pivoted by tension generated from the safety bar 100 being pulled out.

For example, one side of the connection member 240 is coupled and fixed to the safety bar 100, and the other side may be hinged so as to rotate at one side of the stopper member 220 described above.

At this time, the connecting member 240 has elasticity and is stretched or prepared to be restored to its original length, so that a part of the safety bar 100 may be relieved of restrictions on the length of being drawn out of the armrest part 2.

The restoring member 260 may serve to provide restoring force to the stopper member 220 in a direction in which the stopper member 220 comes into contact with the wheel 3 .

Specifically, the restoring member 260 returns the other side of the stopper member 220 to its original position by rotating one side of the stopper member 220 rotated in one direction by the withdrawal of the safety bar 100 in the opposite direction to the aforementioned one direction again can fulfill its role.

Therefore, when the user releases the buckle fastening of the safety bar 100, one side of the stopper member 220 rotates in the opposite direction by the restoring member 260 and returns to the original position, and the other side of the stopper member 220 The wheel 3 may be braked while returning to the original position along one side of the stopper member 220 .

In addition, a part of the safety bar 100 connected to the stopper member 220 by the connection member 240 may be automatically drawn into the armrest part 2 according to the return of the stopper member 220 to its original position.

As shown in FIG. 3 , the brake 200 may further include a fixing plate 201 fixed in the inner space of the armrest part 2 .

For example, as shown in the drawing, the central axis of the fixing plate 201 is concentric with the rotational axis of the stopper member 220 and is fixed in the armrest part 2 so that the restoring member 260 can be disposed on one surface. .

At this time, the center end of the restoring member 260 is connected to the rotation axis of the stopper member 220, and the other end wound at equal intervals based on the center end is fixed to the fixing plate 201, so that the stopper member 220 is the wheel ( 3), a restoring force is provided to the stopper member 220 in a direction in contact with the stopper member 220 so that it can return to its original position.

Here, the restoring member 260 is provided with a restoring force to the stopper member 220 so that the stopper member 220 returns to its original position and the drawn-out safety bar 100 is retracted, if it can perform a role, its structure and shape , the material may vary, and the scope of rights is not limited by this.

However, for more detailed explanation, if the bar shown in the drawings is described as an example, the restoring member 260 may be a helical torsion spring wound around the center end at equal intervals.

The operating process of the safety bar 100 and the brake 200 based on the user's seat is described again with reference to FIGS. 4 and 5 as follows.

When the user sits on the seat part 1, the buckle at the end of the safety bar 100 is disposed adjacent to the armrest part 2, and a part of the safety bar 100 is retracted as shown in FIG. 4.

Here, the link 320 connected to the scaffold 300, which will be described later, can also be connected to the safety bar 100 and operate, and the lower surface of the armrest part 2 to prevent indirection between the link 320 and the armrest part 2. can be incised.

At this time, rubber pads 2a and 2b are provided to cover the incision formed on the lower surface of the armrest portion 2, and when the link 320 to be described later operates in conjunction with the safety bar 100, the link 320 Wear and damage of the link 320 that may occur due to contact with the incision can be prevented.

In addition, one end of the connection member 240 is connected to the retracted safety bar 100 and the other end may be eccentric and hinged to one end of the stopper member 220 provided to rotate.

In addition, the other end of the stopper member 220 maintains contact with the wheel 3 to maintain braking of the wheel 3.

At this time, when the user tightens the buckle of the safety bar 100 by pulling it toward the abdomen, as shown in FIG. 5, a part of the safety bar 100 is pulled out from the armrest part 2 and tension is generated, and the safety bar One end of the connection member 240 connected to (100) also moves in the direction in which the safety bar 100 is withdrawn, like the safety bar 100, so that one end of the stopper member 220 is eccentric and hinged to the connection member ( As one end of the stopper member 220 is rotated in one direction by the other end of 240), contact with the wheel 3 of the other end of the stopper member 220 is released, and the wheelchair can be moved.

Meanwhile, the brake 200 described above may be deformed in a hydraulic method.

For example, as shown in FIG. 6 , the brake 200 may include a cylinder member 280 and a stop member 290 .

Specifically, the cylinder member 280 may serve to convert the tension generated when the safety bar 100 is pulled out of the armrest part 2 into hydraulic pressure, and the first piston 281 provided on one side of the cylinder A safety bar 100 may be connected to and a stop member 290 to be described later connected to the second piston 282 provided on the other side.

The stop member 290 is connected to the cylinder member 280, and is specifically connected to the second piston 282 to unlock the wheel 3 according to hydraulic pressure.

Specifically, when the safety bar 100 is withdrawn by the user, pressure is applied to the first piston 281 by tension to move in one direction in the cylinder member, and accordingly, the second piston 282 moves in the same direction while the second While the stop member 290 connected to the piston 282 and in contact with the wheel 3 moves in the direction of movement of the second piston 282, the contact between the wheel 3 and the stop member 290 is released, and the wheel ( 3) can be unlocked.

Here, the stopping member 290 may be provided in the same or similar form as the other end of the stopper member 220 described above.

That is, the stop member 290 is connected to the second piston 282 and protrudes long toward the outside of the armrest portion 2, and may be provided in a form bent toward the wheel 3.

Furthermore, as shown in FIG. 7 , the cylinder member 280 may be configured.

For example, the cylinder member 280 may include a first cylinder 284 and a second cylinder 286, and the first cylinder 284 is connected to the safety bar 100 to convert tension into hydraulic pressure. can be performed.

In addition, as shown in the drawing, a tension spring 284a having a restoring force in the retraction direction of the safety bar 100 is provided in an unsealed space so that the safety bar 100 can be connected to the first cylinder 284. When the buckle of the safety bar 100 is released, the first piston 281 and the second piston 282 return to their original positions, the safety bar 100 is retracted, and the stopping member 290 is attached to the wheel 3 can be contacted.

In addition, the second cylinder 286 may be connected to the first cylinder 284 and serve to distribute hydraulic pressure to the stopping member 290, and may be provided to have a different diameter from the first cylinder 284. can

Therefore, the diameter of the first cylinder 284 may be formed smaller than the diameter of the second cylinder 286 so that the user can pull the safety bar 100 and release the brake 200 with minimal force. .

In other words, as shown in FIG. 7 , the safety bar is retracted in a state in which the brake is locked, and the tension spring 264a may be in an extended state.

Thereafter, when the user pulls the safety bar 100 and withdraws it to the outside of the armrest part 2, the tension spring 264a is compressed to the left wall of the first cylinder 284, and then safety bar 100 is released. As the bar is retracted into the armrest part 2 again, the tension spring 264a is also stretched again in the direction in which the safety bar 100 is retracted, thereby restoring the initial state.

Furthermore, as shown in FIG. 8, the second cylinder 286 is divided symmetrically with respect to the wheel 3, and the stop member 290 connected to the second piston 282 on one side 286a is one side of the wheel 3 , and the stop member 290 connected to the second piston 282 of the other side 286a is in contact with the other side of the wheel 3 at the same time, and when the safety bar 100 is withdrawn, it is simultaneously spaced from the wheel 3 The braking force of the brake 200 may be enhanced by being provided so that the lock of the wheel 3 is released.

Next, the scaffold 300 interlocked with the safety bar 100 will be described through FIGS. 9 to 13 as follows.

The footrest 300 may be coupled to a plurality of links 320 interlocking with the safety bar 100 so that the safety bar 100 protrudes forward from the lower portion of the seat 1 when the safety bar 100 is withdrawn.

Here, the link 320 may include a first link 321 and a second link 322, the first link 321 is connected to the safety bar 100, the second link 322 is the first It can be connected to link 321 .

Specifically, as shown in the drawing, one end of the first link 321 may be rotatably connected to the safety bar 100 so that the other end rises rearward from the initial position according to the withdrawal of the safety bar 100.

At this time, the other end of the second link 322 descends backward from the initial position according to the withdrawal of the safety bar 100, so that the footrest 300 connected to the other end protrudes forward from the lower part of the seat part 1. One end may be rotatably connected to the other end of the first link 321 described above.

At this time, the link 320 having the configuration described above may further include a first guide 326 to guide the operation of the first link 321 and the second link 322 .

Specifically, the first guide 326 has an incision groove having an upward inclination from one side to the other side, and along the incision groove having an upward inclination, the other end of the first link 321 and the second guide 326 rising backward from the initial position. One end of the link 322 may be moved.

In addition, the link 320 may further include a second guide 327 so as to guide the other end of the second link 322 descending backward from the initial position, and the second guide 327 also includes a first guide ( 326), a cutting groove may be formed.

At this time, the shape of the incision formed in the second guide 327 is the other end of the second link 322 having a certain length, and one end of a third link 324 to be described later that is hinged to the other end of the second link 322 It may be provided to have a downward slope from one side to the other side to guide the movement of.

Here, the magnitude of the force transmitted to the plurality of links 320 due to the withdrawal of the safety bar 100 is offset as the hinged link 320 is added, and the above-described first guide 326 and second guide 327 Since the link 320 may not return to the initial position even if the movement is guided through the link 320 may occur, in order to solve this problem, the first guide 326 and the second guide 327 are connected to the link 320 at the initial position. A spring having a restoring force in a direction returning to may be further provided.

Next, the link 320 may further include an auxiliary link 323 connected between the second link 322 and the scaffold 300 so that the scaffold 300 protrudes or is drawn forward at a constant height from the ground. there is.

Specifically, the auxiliary link 323 may include a third link 324 and a fourth link 325 .

For example, one end of the third link 324 is rotatably connected to the other end of the second link 322 so that the other end of the second link 322 operates in the same way when descending from the initial position toward the rear. The other end of the three links 324 may be provided to descend vertically from the initial position.

At this time, one end of the fourth link 325 is rotatably connected to the other end of the third link 324 so that the other end of the third link 324 can operate in the same way as when vertically descending from the initial position.

The above-described auxiliary link 323 may further include a third guide 328 to guide the movement of the third link 324 and the fourth link 325, and the third guide 328 also includes the first guide ( 326) and the second guide 327, a spring having a restoring force may be provided in a direction in which the connecting portion returns to an initial position.

Specifically, the third guide 328 has a cut groove formed long in the vertical direction on the ground to guide the movement of the other end of the third link 324 and one end of the fourth link 325 vertically descending from the initial position. It can be.

According to the configuration of the link 320 as described above, the other end of the fourth link 325 is provided to be moved forward or returned to the rear, so that the footrest 300 connected to the other end of the fourth link 325 ) protrudes from the lower part of the seat part 1 when the safety bar 100 is fastened, and when the fastening of the safety bar 100 is released, it is automatically drawn into the lower part of the seat part 1 for safety due to the scaffold 300 accidents can be prevented.

Here, the auxiliary link 323 is formed with an incision groove formed long in the horizontal direction on the ground so that the footrest 300 protrudes or is drawn forward at a certain height from the ground from the initial position where the footrest 300 is inserted into the lower part of the seat part 1 4 guides (not shown) may be further included.

As described above, the hospital fall prevention wheelchair according to an embodiment of the present invention in which the safety bar, the brake, and the footrest are interlocked may include only the safety bar and the footrest, in some cases, and may include only the safety bar and the brake. may be configured.

Therefore, the fall prevention wheelchair for hospital use according to an embodiment of the present invention can prevent the situation of getting on and off the wheelchair without applying the brakes on the wheels of the wheelchair and the situation of stepping on and getting off or getting caught on the footrest, so the patient can be transported by himself or by a guardian. It is possible to get on and off the bus more safely when getting on and off the wheelchair with the help of staff.

At this time, since the safety bar should be loosened naturally and intuitively when getting on and off the vehicle, the brake and the footrest are automatically adjusted through the movement of the safety bar, thereby preventing falls.

In particular, it can increase the safety of using wheelchairs for the elderly with reduced muscle strength or walking disabilities, contribute to the formation of a patient safety culture, and relieve the economic burden caused by disputes and increase in unnecessary days of hospitalization due to falls.

In addition, it can greatly reduce the hassle of patients and guardians having to remember and perform the procedures for preventing falls every time, and nurses' stress can be reduced due to low educational performance.

That is, by having a wheelchair structure in which a safety bar, brakes, and footrests are interlocked, a nudge effect in which falls are naturally prevented during use is induced, thereby contributing to patient safety enhancement through prevention of wheelchair falls.

As described above, the preferred embodiments according to the present invention have been reviewed, and the fact that the present invention can be embodied in other specific forms without departing from the spirit or scope in addition to the above-described embodiments is a matter of ordinary knowledge in the art. It is self-evident to them. Therefore, the embodiments described above are to be regarded as illustrative rather than restrictive, and thus the present invention is not limited to the above description, but may vary within the scope of the appended claims and their equivalents.

10: fall prevention wheelchair for hospital
1: seat portion
2: armrest
2a, 2b: rubber pad
3: wheels
100: safety bar
200: brake
201: fixed plate
220: stopper member
240: connecting member
260: restoration member
280: cylinder member
281: first piston
282: second piston
284: first cylinder
284a: tension spring
286: second cylinder
290: stopping member
300: scaffolding
320: link
321: first link
322: second link
323: auxiliary link
324: third link
325: fourth link
326 first guide
327 second guide
328 third guide

Claims (10)

A wheelchair equipped with armrests on both sides of the seat where the user's arms are seated,
A safety bar that is drawn out from the inside of the armrest and is fastened to the user's abdomen; and
It is coupled to a plurality of links interlocking with the safety bar and includes a footrest protruding forward from the lower part of the seat when the safety bar is withdrawn,
The link is
A first link having one end rotatably connected to the safety bar so that the other end rises rearward from an initial position according to the withdrawal of the safety bar, and one end rotatably connected to the other end of the first link to withdraw the safety bar. Characterized in that it includes a second link that allows the footrest connected to the other end to protrude forward from the lower part of the seat by lowering the other end toward the rear from the initial position according to,
Fall prevention wheelchair for hospital use.
According to claim 1,
The link is
Characterized in that it further comprises a first guide formed with a cutout groove having an upward inclination from one side to the other to guide the other end of the first link and one end of the second link rising backward from the initial position,
Fall prevention wheelchair for hospital use.
According to claim 2,
The link is
Characterized in that it further comprises a second guide formed with a cutout groove having a downward slope from one side to the other side so as to guide the other end of the second link descending from the initial position toward the rear.
Fall prevention wheelchair for hospital use.
According to claim 1,
The link is
Characterized in that it further comprises an auxiliary link connected between the second link and the scaffold so that the scaffold protrudes or is drawn forward at a certain height from the ground,
Fall prevention wheelchair for hospital use.
According to claim 4,
The auxiliary link is
a third link having one end rotatably connected to the other end of the second link and vertically descending from the initial position when the other end of the second link descends backward from the initial position; and
One end is rotatably connected to the other end of the third link and the footrest is connected to the other end, so that when the other end of the third link descends vertically from the initial position, the other end protrudes forward from the initial position at a constant height from the ground Characterized in that it comprises a fourth link that becomes,
Fall prevention wheelchair for hospital use.
According to claim 5,
The auxiliary link is
Characterized in that it further comprises a third guide having a cutout groove formed long in the vertical direction on the ground to guide the other end of the third link and one end of the fourth link vertically descending from the initial position.
Fall prevention wheelchair for hospital use.
A wheelchair equipped with armrests on both sides of the seat where the user's arms are seated,
A safety bar that is drawn out from the inside of the armrest and is fastened to the user's abdomen;
a brake interlocking with the safety bar to unlock the wheel when the safety bar is withdrawn; and
It is coupled to a plurality of links interlocking with the safety bar and includes a footrest protruding forward from the lower part of the seat when the safety bar is withdrawn,
The link is
A first link having one end rotatably connected to the safety bar so that the other end rises rearward from an initial position according to the withdrawal of the safety bar, and one end rotatably connected to the other end of the first link to withdraw the safety bar. Characterized in that it includes a second link that allows the footrest connected to the other end to protrude forward from the lower part of the seat by lowering the other end toward the rear from the initial position according to,
Fall prevention wheelchair for hospital use.
According to claim 7,
the brake,
When the safety bar is withdrawn from the armrest, it is rotated in one direction to unlock the wheel, and when the safety bar is restored to its initial position, it is rotated in the opposite direction to brake the wheel.
Fall prevention wheelchair for hospital use.
According to claim 7,
The link is
Characterized in that it further comprises an auxiliary link connected between the second link and the scaffold so that the scaffold protrudes or is drawn forward at a certain height from the ground,
Fall prevention wheelchair for hospital use.
According to claim 9,
The auxiliary link is
a third link having one end rotatably connected to the other end of the second link and vertically descending from the initial position when the other end of the second link descends backward from the initial position; and
One end is rotatably connected to the other end of the third link and the footrest is connected to the other end, so that when the other end of the third link descends vertically from the initial position, the other end protrudes forward from the initial position at a constant height from the ground Characterized in that it comprises a fourth link that becomes,
Fall prevention wheelchair for hospital use.

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