JPH0119937Y2 - - Google Patents

Description

[Detailed description of the invention] A. Purpose of the invention [Field of industrial application] The present invention relates to a stretcher for transporting patients, and particularly relates to an improvement of a stretcher used for assisting bedded patients in getting in and out of the bath.

[Conventional technology]

To bathe a person with lower limb disabilities or a bedridden patient who has difficulty standing up due to long-term treatment, the patient is transferred to a stretcher placed on a transport vehicle to the edge of the bathtub, and the patient is immersed along with the stretcher into the bathtub using a lifting mechanism. A bathing/exiting system is used in which the patient is bathed in hot water and then transferred to a transport vehicle along with the stretcher. Conventionally, a stretcher used in such a bathing system has a trunk support and a leg support placed on a rectangular frame made of pipe material, etc., and the trunk support is used to hold the patient's head above the hot water while the patient is taking a bath. is pivotally connected to the underframe so that the head side can be tilted upward, and the tilting angle can be set in multiple stages by engaging and disengaging a locking member. However, when bathing a patient, the caregiver must use one hand to lift the trunk support, on which the weight of the patient's upper body rests, from the horizontal position to the head-up position, while using the other hand to lock the locking member to the support frame. must,
This is a heavy workload for the caregiver, and is a cause of lower back pain, which is common among caregivers.

In order to overcome the above-mentioned drawbacks of the conventional stretcher, a trunk stand, a thigh stand, and a lower leg stand are arranged on the frame, and each stand is moved in the upward direction of the head using a spring force that is approximately balanced with the patient's weight. The present application provides a stretcher for bathing patients, which substantially cancels out the patient's weight on each table by biasing the thigh table and the lower leg table in the direction of tilting them in a chevron shape, thereby significantly reducing the effort required by the caregiver to tilt each table. This was proposed by a person in Utility Application No. 155151/1983.

[Problem that the invention attempts to solve]

However, in the above-mentioned stretcher, the locking mechanism that fixes the tilted position of each stretcher is provided with the tips of linking rods that protrude in the left-right direction of the underframe by operating a lever on the crank plate on both sides of the underframe with appropriate intervals. Since the locking mechanism is designed to be inserted into corresponding holes on the left and right sides of a pair of engaging bodies, the locking mechanism is complicated and does not have sufficient rigidity. It is difficult to insert and requires both hands to change the tilt angle of each platform and operate the locking mechanism. Further, there were other problems such as the complicated spring mechanism for biasing each table in the direction of inclination.

B. Structure of the invention [Means for solving the problems] The purpose of the present invention is to solve the above problems and provide a stretcher that is easy to operate and has a simple structure.
In the stretcher 1 according to the present invention, a trunk support 3, a thigh support 4, and a lower leg support 5 are sequentially arranged on a rectangular underframe 2. is pivotally connected to one end of the body lifting mechanism 20, and the other end of the body lifting mechanism 20 is pivotally connected to the underframe 2 to support the trunk stand 3.
The underframe 2 and the body lifting mechanism 20 form a triangular link, and the body lifting mechanism 20 overlaps each other to expand and contract its entire length, and the first and second parts are always biased in the expansion direction by a compression coil spring 20c. Second member 2
0a, 20b, the first and second members 2
0a and 20b are configured such that their entire length can be variably locked to each other by a detachable locking mechanism 23, and the release lever 24 of the locking mechanism 23 and the angle changing hand grip 11 of the trunk base 3 are placed close to each other. The thigh stand 4 has its trunk stand 3 side pivotally connected to the underframe 2, and its lower leg stand 5 side connected to the lower leg stand 5 in a bendable manner, and the foot side of the lower leg stand 5 is connected to the underframe 2. The thigh support 4 is supported on the underframe 2 so as to be movable in the length direction of the underframe 2.
A compression coil spring 15a disposed in the upper part of the thigh base 4 and the lower leg base 5 is constantly biased upward to provide elasticity to the thigh base 4 and the lower leg base 5 into a mountain shape, and the angle of the mountain shape is constantly biased in the locking direction and the lock position A lower limb bending mechanism 25 comprising first and second engaging members 26 and 27 that variably engage with each other, one of which is pivotally connected to the thigh support 4 and the other to the support frame 2.
It is configured to be variable in multiple stages.

[Embodiment] An embodiment of the present invention will be described below with reference to the accompanying drawings. In FIGS. 1 and 2, a stretcher 1 according to the present invention has a trunk support 3 for supporting the patient's upper body, a thigh support 4 for supporting the thigh, and a lower leg Lower leg stands 5 supporting the stands are sequentially arranged. The lower surface of the trunk stand 3 on the side of the thigh stand 4 is pivoted to the vertical members 2a, 2a on both sides of the underframe 2 using hinges 6, 6 so that the head side can be raised. Hinge 7 on the same vertical members 2a, 2a,
7, and the lower surface of the lower leg stand 5 is bendably connected to the lower surface of the lower leg stand 5 by horseshoe-shaped hinges 8, 8. Rollers 9,
9 is attached, and the rollers 9, 9 are slidably fitted into guide grooves 10, 10 in the longitudinal direction of the underframe 2 provided at the rear of the vertical members 2a, 2a of the underframe 2.

The head side of the trunk stand 3 extends further forward than the front horizontal member 2b of the underframe 2, and the lower surface of the extension is arranged on the longitudinal central axis of the underframe 2.
It is supported by the front transverse member 2b via. In the body lifting mechanism 20, a shaft member 20b (second member) is slidably fitted into an outer cylinder member (first member) 20a, and a compression coil spring 20c is inserted between the outer cylinder member 20a and the shaft member 20b. The upper body elevating mechanism 20 is always urged in the extending direction. The outer cylinder member 20a is the shaft 2
1, the shaft member 20b is pivotally attached to the lower surface of the trunk stand 3.
The outer end of is pivotally connected to the front transverse member 2b by a shaft 22,
The trunk stand 3, the underframe 2, and the body lifting mechanism 20 form a triangular link with the hinge 6 and the shafts 21 and 22 as fulcrums. The upper body lifting mechanism 20 is a locking mechanism 23
The total length is set in multiple stages. That is, in the locking mechanism 23, a plurality of locking holes 23a are formed in the shaft member 20b in the axial direction, and a through hole 23b that can be aligned with each of the locking holes 23a is formed in the outer cylinder member 20a. A pin 23d at the tip of a leaf spring 23c whose base end is attached to the cylindrical member 20a engages with one of the locking holes 23a of the shaft member 20b through the through hole 23b of the outer cylindrical member 20a, and the outer cylindrical member 20a and the shaft member are connected to each other. 20b
and are adapted to be locked together at a desired overlapping length. Both ends of two parallel plate members 24a, 24a are attached to the shaft 21 of the outer cylinder member 20a with a bar 24.
A frame-shaped release lever 24 connected laterally at b and 24c is pivotally mounted, and by pulling up the bar 24b at the front end of the release lever 24, the bar 24c at the rear end is released.
bends the leaf spring 23c, removes the pin 23d from the locking hole 23a of the shaft member 20b, and removes the pin 23d from the outer cylinder member 20a.
and the shaft member 20b are released. Outer cylinder member 2
The through hole 23b of 0a is connected to the other locking hole 2 of the shaft member 20b.
3a and the release lever 24 is placed in the dual position, the outer cylinder member 20a and the shaft member 20b are locked to each other at another overlapping length.

The compression coil spring 20c is set to a spring force that can apply a lifting force to the trunk support 3 via the upper body lifting mechanism 20 that is substantially in balance with the weight of the patient's upper body applied to the trunk support 3. A T-shaped band grip 11, which the assistant grips when changing the angle of the trunk stand 3, is attached to the front end of the outer cylinder member 20a close to the upper front end of the release lever 24, and attached to the lower surface of both sides of the trunk stand 3. A band 13 for fixing the patient's upper body is attached to the provided rod-shaped band holders 12, 12, and hand grips 14, which are held by the patient, are attached to both sides of the trunk base 3.
14 is pivoted so that it can be raised and lowered freely.

The underframe 2 has a pair of left and right spring mechanisms 1 that constantly urge the thigh stand 4 upward by compression coil springs 15a.
5 and 15, and a pair of left and right support rollers 16 for receiving the thigh support 4 in a horizontal state. The thigh table 4 and the lower leg table 5 are given elasticity so as to form a chevron shape by the compression coil springs 15a of the spring mechanisms 15, 15 that substantially balance the weight of the patient's lower limbs, and the angle of this chevron shape is in the longitudinal direction of the frame 2. The leg bending mechanism 25 arranged on the central axis allows the leg to be bent in multiple stages. The lower limb bending mechanism 25 includes two parallel plate members 26a, 2
A first engaging member 26 whose rear tips 6a are connected laterally with a bar 26b, and whose front proximal ends are pivotally connected to the lower surface of the thigh stand 4 on the side of the thigh stand 5 with pins 26c, 26c.
and two parallel support members 17, 1 provided on the underframe 2.
7 at a shaft 27a, and a plurality of engagement grooves 27b that can be engaged with the bar 26b of the first engagement member 26 are formed on the lower side of the first engagement member 26 side end. The second engagement member 2 is attached to the rear horizontal member 2c of the underframe 2 via a compression coil spring 28a.
The second engaging member 27 is engaged with the opposite end of the first engaging member 26 and urged upward, and the second engaging member 27 is always engaged with the first engaging member 26, thereby reducing the spring force of the compression coil spring 28a. By pressing down against the second engaging member 2
7 and a release knob 28 that releases the engagement with the first engagement member 26. The first engaging member 26 has a distal end supported by a receiving member 17a attached to the supporting member 17.

Bands 19 for fixing the patient's thighs are attached to rod-shaped band holders 18, 18 attached to both lower surfaces of the thigh table 4.

[Effect]

The operation of the stretcher 1 having the above-mentioned structure will be described below, taking as an example the case where the stretcher 1 is used for bathing a recumbent patient. A bedded patient is transferred from the bed onto a stretcher 1 placed on a transport vehicle by an assistant. At this time, the trunk stand 3, thigh stand 4, and lower leg stand 5 of the stretcher 1 are generally placed in a horizontal position. At this time, the compression coil spring 20c is compressed and the body lifting mechanism 20 is shortened to the maximum, and the shaft member 20b
The locking hole 23a closest to the shaft 22 and the outer cylinder member 20
The pin 23d of the locking mechanism 23 is engaged with the through hole 23b of a, and the horizontal state of the trunk stand 3 is maintained. Further, the first engaging member 26 of the lower limb bending mechanism 25 takes an angle closest to the horizontal, and the second engaging member 2 is attached to the bar 26b.
The engagement groove 27b closest to the shaft 27a of No. 7 is engaged, and the thigh stand 4 and the lower leg stand 5 are maintained in a horizontal state. If necessary, the patient's upper body and thighs are fixed with bands 13 and 19.

The carrier carrying the stretcher 1 containing the patient is pushed to the vicinity of the bathtub, where the patient's body is washed with a shower or the like, and then the patient is moved along with the stretcher 1 to a bathing table in the bathtub. The angle of each stand 4, 5, 6 of the stretcher 1 may be changed before or after washing the body, and the angle of each stand 4, 5, 6 is changed as follows. That is, when changing the angle of the trunk stand 3, the caregiver grasps the hand grip 11 at the front of the stretcher 1 with one hand, and at the same time presses the bar 2 at the front end of the release lever 24.
4b with your finger, the bar 24c at the rear end of the release lever 24 bends the leaf spring 23c and releases the pin 23d.
is removed from the locking hole 23a of the shaft member 20b to release the lock between the outer cylinder member 20a and the shaft member 20b. Therefore, the body lifting mechanism 20 is biased in the extension direction by the spring force of the compression coil spring 20c, and applies a lifting force to the head side of the trunk stand 3. Since this lifting force is set to be approximately balanced with the weight of the patient's upper body, the caregiver can easily tilt the trunk support 3 with one hand. Then, release your finger from the front bar 24b of the release lever 24 at the appropriate tilting position, and move the shaft member 20
The other locking hole 23a of b and the through hole 2 of the outer cylinder member 20a
3b, the pin 23b will fit into both holes 23a,
23b, the entire length of the upper body lifting mechanism 20 is fixed, and the trunk stand 3 is converted to a desired angle.

In addition, when changing the angle of the thigh stand 4 and the lower leg stand 5, if the caregiver presses down the release knob 28 at the rear end of the frame 2 with one hand against the spring force of the coil spring 28a,
The rear end of the second engagement member 27 of the lower limb bending mechanism 25 moves down and the front end moves up, causing the bar 26b of the first engagement member 26 to disengage from the engagement groove 27b of the second engagement member 27, and the thigh The platform 4 is tilted upward about the hinge 7 by the spring force of the spring mechanism 15, and accordingly, the roller 9 at the rear end of the leg platform 5 moves forward along the guide groove 10, and the thigh platform 4 and the leg platform 5 are moved forward. tilts in a chevron shape around a horseshoe-shaped hinge 8. Then, when the release knob 28 is released at an appropriate tilting position, the bar 26b of the first engaging member 26 engages with the other engaging groove 27b of the second engaging member 27, and the thigh rest 4 and the lower leg rest 5 are connected to each other. is fixed in its tilted position. In this state, the patient is bathed by operating the elevating mechanism to raise the bathtub or lower the bath table. At this time, the patient lying supine on the stretcher 1 has his or her head exposed above the hot water surface and can take a bath in a stable posture. After bathing, the patient's body is wiped clean, and each platform 3, 4, 5 of the stretcher 1 is returned to a horizontal position. That is, on the trunk stand 3, the helper carries the stretcher 1.
Grasp the front hand clip 11 with one hand, and at the same time pull up the bar 24b at the front end of the release lever 24 with your fingers to release the engagement between the outer cylindrical member 20a and the shaft member 20b of the upper body lifting mechanism 20, and push the hand grip downward. When the lowering trunk rest 3 is returned to the horizontal position and the finger is released from the bar 24b at the front end of the release lever 24, the upper body lifting mechanism 20 is engaged in the most contracted state, and the trunk rest 3 is fixed in the horizontal position. In addition, in the thigh stand 4 and the lower leg stand 5, the first engaging member 26 and the second engaging member 27 of the lower limb bending mechanism 25 are pressed down with one hand on the release knob 28 at the rear of the stretcher 1.
Then, use your other hand to press down on the peaks of the thigh support 4 and lower leg support 5 to return both supports 4 and 5 to the horizontal position.If you release your hand from the release knob 28, both supports 4 and 5 will be level. Fixed in position. In the horizontal repositioning operation of each of the above-mentioned tables 3, 4, and 5, since each of the tables 3, 4, and 5 is supported by a spring force that substantially balances the patient's weight, the upper body raising mechanism 20 and the lower limb bending mechanism 25 are engaged. Even when released, each unit 3,
4 and 5 can be returned to the horizontal position with a light operating force without falling due to their own weight.

After bathing, the patient is placed on the carrier again along with the stretcher, and the patient is driven to the bed and made to lie down.

C. Effect of the invention As described above, according to the invention, the handgrip 1 to be gripped in order to change the angle of the trunk stand 3
Since a release lever 24 is provided to approach the grip 11 and release the fixation of the angle of the trunk stand 3, the caregiver can grasp the grip 11 with one hand and simultaneously release the release lever 24.
This allows the operator to easily release, convert, and fix the angle of the trunk stand 3 with only one hand.

Furthermore, since the trunk support 3, thigh support 4, and lower leg support 5 are each supported by a spring force approximately balanced with the patient's weight,
When changing the angle of each table 3, 4, 5, the patient's weight is offset by the spring force, and the angle of each table can be changed with extremely light operating force, which can significantly reduce the labor of the caregiver. The spring force is applied to the trunk support 3 by a compression coil spring 20c that urges the outer cylinder member 20a and shaft member 20b of the upper body lifting mechanism 20 in the direction of extension, and applies the force to the thigh support 4 and the lower leg support 5. The spring mechanism is provided with a compression coil spring 28a that directly biases the thigh support 4, so that the spring mechanism has a simple and reliable effect.

Furthermore, an upper body lifting mechanism 20 and a lower limb bending mechanism 2 that fix the angles of the trunk stand 3, thigh stand 4, and lower leg stand 5 are provided.
Since the engaging portion and the engaged portion of No. 5 are located on the central axis of the underframe 2 in the longitudinal direction and do not shift, there is no need to visually check their engagement with each other. Each engaging portion engages itself by simply changing the angle of the table 5 to a desired angle and slightly oscillating the angle, and even an unskilled person can easily change the angle of each table.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention; Fig. 1 is a plan view of the stretcher with the trunk stand, thigh stand, and lower leg stand removed, and Fig. 2 is a partially cutaway side view taken along - in Fig. 1. be. 1... Stretcher, 2... Frame, 3... Trunk stand, 4...
... Thigh stand, 5... Lower leg stand, 11... Hand grip, 15a... Compression coil spring, 20... Upper body lifting mechanism, 20a... Outer cylinder member (first member), 20
b... Shaft member (second member), 20c... Compression coil spring, 23... Locking mechanism, 24... Release lever, 25... Lower limb bending mechanism, 26... First engaging member, 27... A second engagement member.

Claims (1)

[Scope of utility model registration request] A trunk stand, a thigh stand, and a lower leg stand are arranged in sequence on a rectangular underframe, and the trunk stand has its thigh stand side pivoted to the underframe and its head side pivoted to one end of the upper body lifting mechanism. The other end of the body lifting mechanism is pivotally connected to the underframe to form a triangular link with the trunk stand, the underframe, and the upper body lifting mechanism;
The upper body lifting mechanism consists of first and second members that overlap each other to extend and contract over the entire length and are constantly biased in the direction of extension by a compression coil spring, and the first and second members are removably engaged. The mechanism allows the legs to be latched to each other in a variable manner, and the release lever of the locking mechanism and the hand grip for changing the angle of the trunk support are disposed close to each other, and the thigh support has its side facing the trunk support. It is pivotally attached to the frame, and the crus base side is bendably connected to the crus base, and the foot side of the crus base is supported on the base frame so as to be movable in the length direction of the base frame, and the thigh base is disposed on the base frame. The provided compression coil springs are always biased upward to give elasticity to the thigh base and crural base in a chevron shape, and the angle of the chevron is constantly biased in the locking direction and the locking position can be varied so that they engage with each other. A stretcher characterized in that the stretcher is made variable in a plurality of stages by means of a lower limb bending mechanism in which one of the first and second engaging members is pivotally connected to the thigh support and the other is pivotally connected to the underframe.