Lower limb traction device with adjustable traction force

Abstract

The lower limb traction device comprises a main body, a first pulley, a second pulley and a ratchet wheel, the first pulley and the second pulley are rotationally connected to the two ends of the main body respectively, the ratchet wheel is rotationally connected to the outer side of the main body and coaxially connected with the second pulley, and a tension adjuster is installed on the outer side of the ratchet wheel. The first pulley and the second pulley are connected through a pull rope, the tail end of the pull rope is wound on the second pulley, and the head end of the pull rope penetrates through the first pulley to be fixedly connected with the connecting piece. Potential safety hazards are easily caused by mistaken touch of pedestrians in the aisle, and after equipment arrangement is completed, no outwards-protruding equipment exists, so that the use risk is reduced; after the arrangement is finished, the detachable rocking handle can be separated from the tension regulator, so that the use risk that non-medical workers privately change the tension is fundamentally solved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and particularly relates to a lower limb traction device with adjustable traction force. Background Art

[0002] Skin traction is widely used in lower limb fractures. Although it cannot achieve the treatment effect of reduction, it can, to a certain extent, relieve pain and maintain the limb length.

[0003] Generally, a lower limb traction device (including a traction bracket, a pulling rope, and a weight) realizes the traction of the lower limb through the gravitational action of the weight in cooperation with the traction bracket. However, the space in many wards is limited, it is very cumbersome to hang the weight, and the safety management is difficult, which greatly increases the burden of the nursing staff. Content of the Utility Model

[0004] According to the above-mentioned technical problems, a lower limb traction device with adjustable traction force is provided. To solve the problems raised in the background art, in addition to achieving the treatment purpose in clinical applications, it can also save space, be convenient to operate, and reduce the difficulty of ward safety management.

[0005] The technical means adopted by the utility model are as follows:

[0006] A lower limb traction device with adjustable traction force includes a main body, a first pulley, a second pulley, and a ratchet wheel. The first pulley and the second pulley are respectively rotatably connected to both ends of the main body. The ratchet wheel is rotatably connected to the outside of the main body and is coaxially connected to the second pulley. A tension adjuster is installed on the outside of the ratchet wheel, and a crank is rotatably connected to the outside of the tension adjuster. The first pulley and the second pulley are connected by a pulling rope. The tail end of the pulling rope is wound around the second pulley, and the head end of the pulling rope passes through the first pulley and is fixedly connected to a connecting piece.

[0007] Further, the connecting piece is a hook or a hanging ring.

[0008] Further, the crank is detachably connected to the tension adjuster.

[0009] Further, the outside of the tension adjuster is engraved with scales.

[0010] Further, a ratchet lock tongue is provided on one side of the main body with respect to the ratchet wheel. The ratchet lock tongue is in contact connection with the ratchet wheel, and the ratchet lock tongue is used to lock the ratchet wheel.

[0011] Further, a plurality of pulley mounting holes are arrayed on both sides of the main body. The pulley mounting holes are used to adjust the position of the first pulley.

[0012] Further, brackets are fixedly connected to both ends of both sides of the main body, which are convenient for fixing on the wall or other medical devices.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] 1. The utility model cancels the design of the heavy hammer (heavy object), reducing the floor area occupied by the device. In the past, the heavy hammer (heavy object) would be hung at the end of the patient's bed, and it was easy to be accidentally touched by pedestrians in the aisle, posing a safety hazard. After the device is arranged, there will be no protruding device, reducing the usage risk;

[0015] 2. After the utility model is arranged, the detachable crank can be disengaged from the tension adjuster. Fundamentally, it solves the usage risk that non-medical staff privately change the tension size;

[0016] 3. The tension adjustment is more accurate; it changes the way of adjusting the tension by changing the weight of the heavy hammer (heavy object) in the past. Only by rotating the tension bar machine can the tension value be accurately set. And this operation is repeatable, improving the rigor of the treatment process;

[0017] 4. The ratchet and the ratchet locking tongue can lock the second pulley at any tension value. If the pulled part of the patient moves greatly, the tension of the pulling rope will be transferred to the ratchet, and it will not continuously pull the patient like the heavy hammer (heavy object) scheme, causing accidents;

[0018] 5. It is convenient to arrange. After canceling the heavy hammer (heavy object), the total weight of the device is reduced, reducing the working intensity of the personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for description in the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0020] Figure 1 It is a schematic structural diagram of a lower limb traction device with adjustable traction force provided by the present utility model.

[0021] In the figure: 1. Main body; 2. First pulley; 3. Second pulley; 4. Ratchet; 5. Tension adjuster; 6. Crank; 7. Ratchet locking tongue; 8. Pulling rope; 9. Connector; 10. Bracket; 11. Pulley mounting hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other. The following will refer to the drawings and combine the embodiments to detail the present utility model.

[0023] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are only a part rather than all of the embodiments of the present utility model. The description of at least one exemplary embodiment below is actually only illustrative and in no way restricts the present utility model and its application or use. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0024] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments of the present utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0025] Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and values set forth in these embodiments do not limit the scope of the present utility model. At the same time, it should be clear that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods and devices should be regarded as part of the description. In all the examples shown and discussed herein, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0026] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are generally based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the scope of protection of the present utility model. The orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0027] For ease of description, spatial relative terms, such as "above", "over", "on the upper surface", "upper", etc., may be used herein to describe the spatial positional relationship of a device or feature shown in the figures with respect to other devices or features. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "over" other devices or structures will then be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the corresponding explanations will be made for the spatial relative descriptions used herein.

[0028] In addition, it should be noted that the use of terms such as "first" and "second" to define components is only for the convenience of differentiating the corresponding components. Without additional statements, the above terms have no special meanings, and thus should not be construed as limiting the protection scope of the present utility model.

[0029] As Figure 1 shown, the present utility model provides a lower limb traction device with adjustable traction force, which includes a main body 1, a first pulley 2, a second pulley 3, and a ratchet 4. The first pulley 2 and the second pulley 3 are respectively rotatably connected to both ends of the main body 1 through pins, and both ends of the pins are fixed by circlips to prevent the pins from slipping out of the main body 1 during use. The ratchet 4 is rotatably connected to the outside of the main body 1 and is coaxially connected to the second pulley 3. A tension adjuster 5 is installed on the outside of the ratchet 4, and a crank 6 is rotatably connected to the outside of the tension adjuster 5. The first pulley 2 and the second pulley 3 are connected by a pulling rope 8. The tail end of the pulling rope 8 is wound around the second pulley 3, and the head end of the pulling rope 8 passes through the first pulley 2 and is fixedly connected to a connecting member 9. The tension adjuster 5 presses the outer surface of the ratchet 4 by the elastic force of the spring inside itself. When a critical pulling force is applied to the detachable crank 6, the frictional force of the spring inside the tension adjuster 6 pressing the outer surface of the ratchet 4 is less than the tightening pulling force, and relative sliding occurs to prevent excessive pulling force.

[0030] The connecting member 9 is a hook or a hanging ring. The crank 6 is detachably connected to the tension adjuster 5, and the outside of the tension adjuster 5 is engraved with scales.

[0031] A ratchet locking tongue 7 is provided on one side of the main body 1 with respect to the ratchet 4. The ratchet locking tongue 7 is located on the left side of the ratchet 4 and is fixed by a screw. The ratchet locking tongue 7 is in contact connection with the ratchet 4, and the ratchet locking tongue 7 is used to lock the ratchet 4.

[0032] On both sides of the main body 1, there are multiple pulley mounting holes 11 arrayed, and the pulley mounting holes 11 are used to adjust the position of the first pulley 2.

[0033] Both ends of the main body 1 are fixedly connected with brackets 10, which are convenient for fixing on the wall or other medical devices.

[0034] The working principle of the utility model: Connect the connecting piece 9 with the leg sleeve, shake the detachable crank 6 counterclockwise to pre-tighten the pull rope 8; then rotate the tension regulator 5 counterclockwise to increase the tension value; insert the detachable crank 6 into the tension regulator 5 and slowly rotate the crank 6 counterclockwise, and the pull rope 8 will be tightened evenly. Until the tension regulator 5 makes a "clicking" sound, at this time the tension regulator 5 will automatically cut off the input tension on the side of the crank 6, and at the same time, the ratchet 4 and the ratchet lock tongue 7 cooperate to lock the position of the second pulley 3. At this time, the tension value applied to the stressed part is equal to the value of the tension regulator 5 and will not exceed the expected value due to operation reasons;

[0035] Pull the ratchet lock tongue 7 outward and rotate the detachable crank 6 clockwise at the same time. The pull rope 8 can be relaxed, and the connecting piece 9 returns to the relaxed position for the next use.

[0036] When in use, first fix the bracket 10 at the end of the bed or on the wall, fix it at the position directly in front of the lower limb according to the patient's needs, then connect the patient's traction leg sleeve with the connecting piece 9, adjust the position of the bracket 10 so that the patient's lower limb and the pull rope 8 are in a straight line, and adjust the tension regulator 5 counterclockwise to increase the traction force value until it reaches the traction force value entrusted by the doctor. Insert the detachable crank 6 into the tension regulator 5 and slowly rotate the crank 6 counterclockwise, and the pull rope 8 will be tightened evenly until the tension regulator 5 makes a "clicking" sound. At this time, the tension regulator 5 will automatically cut off the input tension on the side of the crank 6, and at the same time, the ratchet 5 and the ratchet lock tongue 7 cooperate to lock the position of the second pulley 3. At this time, the tension value applied to the stressed part is equal to the tension regulator value, reaching the traction force value entrusted by the doctor.

[0037] Pull the ratchet lock tongue 7 outward and rotate the detachable crank 6 clockwise at the same time. The pull rope 8 can be relaxed, and the connecting piece 9 returns to the relaxed position for the next use.

[0038] When the utility model is in traction, the traction force can be adjusted to meet the needs of more patients, and there is no need for a heavy hammer for traction, which simplifies the traction device.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A lower limb traction device with adjustable traction force, characterized in that, It includes a main body, a first pulley, a second pulley, and a ratchet. The first pulley and the second pulley are respectively rotatably connected to both ends of the main body. The ratchet is rotatably connected to the outside of the main body and coaxially connected to the second pulley. A tension adjuster is installed on the outside of the ratchet, and a crank is rotatably connected to the outside of the tension adjuster. The first pulley and the second pulley are connected by a pulling rope. The tail end of the pulling rope is wound around the second pulley, and the head end of the pulling rope passes through the first pulley and is fixedly connected to a connecting piece.

2. The lower limb traction device with adjustable traction force according to claim 1, wherein, The connecting piece is a hook or a hanging ring.

3. The lower limb traction device with adjustable traction force according to claim 1 or 2, characterized in that, The crank is detachably connected to the tension adjuster.

4. An adjustable traction lower limb traction device according to claim 1 or 2, characterized in that, Scales are engraved on the outside of the tension adjuster.

5. The lower limb traction device with adjustable traction force according to claim 1 or 2, characterized in that, A ratchet locking tongue is provided on one side of the main body with respect to the ratchet. The ratchet locking tongue is in contact connection with the ratchet, and the ratchet locking tongue is used to lock the ratchet.

6. The lower limb traction device with adjustable traction force according to claim 1 or 2, characterized in that, A plurality of pulley mounting holes are arrayed on both sides of the main body, and the pulley mounting holes are used to adjust the position of the first pulley.

7. The lower limb traction device with adjustable traction force according to claim 1 or 2, characterized in that, Brackets are fixedly connected to both ends of the main body, which are convenient for fixing on a wall or a medical device.

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