Lower extremity auxiliary fixing device and treatment bed

Abstract

The application discloses a lower limb auxiliary fixing device and a treatment bed. The device comprises a telescopic frame, which comprises multiple scissor units connected in sequence. Each scissor unit comprises two connecting rods, the middle part of which is connected by a first shaft hinge. The end part of the connecting rods of two adjacent scissor units is connected by a second shaft hinge and a third shaft hinge respectively. The distance from the first shaft hinge to the second shaft hinge is greater than that from the first shaft hinge to the third shaft hinge, so that the telescopic frame is arc-shaped as a whole. The telescopic frame further comprises a spacing adjustment mechanism for controlling the distance between the connecting rods or the first shaft hinge. Multiple clamping parts for clamping lower limbs are distributed on the telescopic frame. The arc-shaped telescopic frame composed of multiple scissor units and the spacing adjustment mechanism are combined to realize a dynamic clamping mode similar to hand gripping, so that the device can continuously extend and retract along an arc-shaped path, thereby forming a gradual clamping and fixing effect from loose to tight on the lower limbs.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a lower limb auxiliary fixation device and treatment bed. Background Technology

[0002] Lower limb assistive fixation devices are often used to assist in orthopedic treatment or rehabilitation, such as for limb traction, fracture fixation, and postoperative protection.

[0003] Currently, such fixing devices typically use simple clamps or prefabricated fixing sleeves. Although the structure is simple, they are inconvenient to use, not conducive to fixing or releasing, and not conducive to adjusting the size or tightness according to the fixing needs. Summary of the Invention

[0004] To solve at least one of the above-mentioned technical problems, the present invention provides a lower limb auxiliary fixation device and treatment bed that simulates grasping action and can adjust the size or tightness as needed by fixing or releasing the lower limb, making it convenient to use.

[0005] On the other hand, the present invention also proposes a treatment bed having the aforementioned lower limb auxiliary fixation device.

[0006] The technical solution adopted in this invention is to design a lower limb auxiliary fixation device, including a telescopic frame. The telescopic frame includes multiple scissor units that are hinged together in sequence. Each scissor unit includes two connecting rods. The middle parts of the two connecting rods are connected by a first axis hinge. The ends of the connecting rods of two adjacent scissor units are connected by a second axis hinge and a third axis hinge, respectively. The distance from the first axis hinge to the second axis hinge is greater than the distance to the third axis hinge, making the telescopic frame generally arc-shaped. The telescopic frame also includes a spacing adjustment mechanism for controlling the distance between the connecting rods or between the first axis hinges. The telescopic frame has multiple clamping parts distributed on it for clamping the lower limbs.

[0007] In some embodiments, the clamping part is connected to the third axis hinge.

[0008] In some embodiments, the fixing device includes two parallel telescopic frames, and the clamping part is connected between opposing third axis hinges of the two telescopic frames.

[0009] In some embodiments, the clamping part is a clamping rod, and the two ends of the clamping rod are respectively connected to the third axis hinge of the two telescopic frames.

[0010] In some embodiments, the two ends of the clamping rod are connected to the pivot of the third axis hinge via ball joints.

[0011] In some embodiments, an elastic buffer layer is provided on the outside of the clamping rod.

[0012] A treatment bed, including the aforementioned lower limb auxiliary fixation device.

[0013] In some embodiments, the connecting rod at the end of the telescopic frame is connected to the bed body via a fixed rod, and the fixed rod is connected to another connecting rod of the telescopic frame via the spacing adjustment device.

[0014] In some embodiments, the clamping part is an airbag, and the two ends of the airbag are respectively connected to the two telescopic frames.

[0015] In some embodiments, the two telescopic frames are connected by a telescopic control mechanism, a slide rail is fixed on the bed, and a slider that slides in cooperation with the slide rail is provided on the fixed rod connected to the two telescopic frames.

[0016] Compared with the prior art, the present invention has the following beneficial effects: This invention achieves a dynamic clamping method similar to hand gripping by setting up an arc-shaped telescopic frame composed of multiple scissor units and combining it with a spacing adjustment mechanism. This allows the device to continuously extend and retract along an arc-shaped path, thereby creating a progressive wrapping and fixation effect on the lower limb from loose to tight. Compared to traditional splints or fixation sleeves, this invention can flexibly adjust the clamping radius and clamping force according to different patient limb sizes and treatment needs, significantly improving adaptability and user comfort. In addition, the double telescopic frame structure and ball joint connection design enhance the system's self-adaptability, allowing for a certain angle of deflection, improving stability and reliability in actual use. Attached Figure Description

[0017] The present invention will now be described in detail with reference to specific embodiments and accompanying drawings. To illustrate the details and facilitate understanding of its principles, the drawings are not necessarily to scale, and similar reference numerals may describe similar components in different views. The accompanying drawings generally illustrate the embodiments discussed herein by way of example and not limitation.

[0018] in: Figure 1 This is a side view of the fixed device.

[0019] Figure 2 This is a three-dimensional schematic diagram of the fixed device.

[0020] Figure 3 This is a schematic diagram showing the fixing device installed on the bed frame.

[0021] Figure 4 This is a side view of the fixed device after it has been extended.

[0022] Figure 5 This is a three-dimensional schematic diagram of the fixed device after it has been extended.

[0023] Figure 6This is a schematic diagram of Example 2.

[0024] In the diagram, 1 is the first axis hinge; 2 is the second axis hinge; 3 is the third axis hinge; 4 is the connecting rod; 5 is the spacing adjustment mechanism; 6 is the clamping rod; 7 is the elastic buffer layer; 8 is the treatment bed; 9 is the fixing rod; 10 is the airbag; 11 is the column; 12 is the sliding sleeve; 13 is the telescopic control mechanism; and 14 is the ball hinge. Detailed Implementation

[0025] The following are specific embodiments of the present invention, and the technical solution of the present invention will be further described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments, and the following embodiments do not limit the invention covered by the claims. Furthermore, not all combinations of the features described in the embodiments are necessary for the inventive solution.

[0026] The principles and structure of the present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0027] Example 1: like Figure 1 , 2 As shown in Figures 3, 4, and 5, a lower limb auxiliary fixation device includes a telescopic frame. The telescopic frame includes multiple scissor units that are hinged together sequentially. Each scissor unit includes two connecting rods 4. The middle parts of the two connecting rods 4 are connected by a first axis hinge 1. The ends of the connecting rods 4 of two adjacent scissor units are connected by a second axis hinge 2 and a third axis hinge 3, respectively. The distance from the first axis hinge 1 to the second axis hinge 2 is greater than the distance to the third axis hinge 3, making the telescopic frame generally arc-shaped. The third axis hinge 3 is located on the radially inner side of the arc-shaped deformable frame, and the second axis hinge 2 is located on the radially outer side of the arc-shaped deformable frame. The telescopic frame also includes a spacing adjustment mechanism 5 that controls the distance between the connecting rods 4 or between the first axis hinge 1. The change in the distance between the connecting rods 4 or between the first axis hinge 1 allows the telescopic frame to extend and retract along an arc-shaped path, which is equivalent to a grasping action, thereby simulating the action of a hand grasping the lower limb. The longer the extension and retraction, the smaller the arc radius of the telescopic frame, and the tighter the grip on the lower limb.

[0028] The telescopic frame has multiple clamping parts for gripping the lower limbs, and the clamping parts are connected to the third axis hinge 3. The fixing device includes two parallel telescopic frames, and the clamping parts are connected between the opposing third axis hinges 3 of the two telescopic frames. The clamping part is a clamping rod 6, and both ends of the clamping rod 6 are connected to the third axis hinges 3 of the two telescopic frames respectively. The clamping rod 6 is a rod body, and both ends of the rod body are connected to the third axis hinges 3 of the two telescopic frames respectively. In this embodiment, one clamping rod 6 is connected every other third axis hinge 3. Of course, it is also possible that each third axis hinge 3 is connected to one clamping rod 6. The rod body of the clamping rod 6 is covered with an elastic buffer layer 7. When clamping, the elastic buffer layer 7 contacts the lower limb first.

[0029] When this lower limb auxiliary fixation device is used in conjunction with the treatment bed 8, the connecting rod 4 at the end of the telescopic frame is connected to the bed body via a fixed rod 9. The fixed rod 9 is connected to another connecting rod 4 of the telescopic frame via the spacing adjustment device. In this embodiment, one end of the spacing adjustment device is rotatably connected to the fixed rod 9, and the other end is connected to the pivot of one of the second shaft hinges 2. The spacing adjustment device can be, for example, a telescopic control device such as an electric cylinder or a pneumatic cylinder.

[0030] The two ends of the clamping rod 6 are connected to the pivot of the third axis hinge 3 via ball joints 14, so that the synchronization of the extension and retraction between the two telescopic frames is slightly different, or the two can rotate or offset relative to each other by a certain angle.

[0031] Example 2: like Figure 6 As shown, the clamping part is an airbag 10, and the two ends of the airbag 10 are respectively connected to the two telescopic frames.

[0032] The two telescopic frames are connected by a telescopic control mechanism 13. A slide rail is fixed to the bed, and a slider that slides along the slide rail is provided on the fixed rod 9 connected to the two telescopic frames. In this embodiment, the slide rail is a horizontal column 11 fixedly connected to the bed, and a sliding sleeve 12 is provided on the fixed rod 9, which slides along the column 11. The telescopic control mechanism 13 can also be an electric cylinder or a pneumatic cylinder, or other telescopic control device. By controlling the approach or distance of the two telescopic frames, the airbag 10 can be controlled to expand towards or contract away from the center. This not only allows adjustment of the distance between the two telescopic frames according to clamping requirements but also allows control of the clamping force on the lower limbs using the radial deformation of the airbag 10. To prevent the sliding sleeve 12 from rotating relative to the column 11, the column 11 can be a quadrangular prism.

[0033] The specific embodiments described herein are merely illustrative examples illustrating the spirit of the invention. Those skilled in the art can make various modifications or additions to the described embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A lower limb auxiliary fixation device, characterized in that, The device includes a telescopic frame comprising multiple scissor lift units connected in sequence by hinges. Each scissor lift unit includes two connecting rods, the middle of which are connected by a first axis hinge. The ends of the connecting rods of adjacent scissor lift units are connected by a second axis hinge and a third axis hinge, respectively. The distance from the first axis hinge to the second axis hinge is greater than the distance to the third axis hinge, making the telescopic frame generally arc-shaped. The telescopic frame also includes a spacing adjustment mechanism for controlling the distance between the connecting rods or between the first axis hinges. The telescopic frame has multiple clamping parts distributed on it for clamping the lower limbs.

2. The lower limb auxiliary fixation device according to claim 1, characterized in that, The clamping part is connected to the third axis hinge.

3. The lower limb auxiliary fixation device according to claim 2, characterized in that, The fixing device includes two parallel telescopic frames, and the clamping part is connected between the two telescopic frames and their opposing third axis hinges.

4. The lower limb auxiliary fixation device according to claim 3, characterized in that, The clamping part is a clamping rod, and the two ends of the clamping rod are respectively connected to the third axis hinge of the two telescopic frames.

5. The lower limb auxiliary fixation device according to claim 4, characterized in that, The two ends of the clamping rod are connected to the pivot of the third axis hinge via ball joints.

6. The lower limb auxiliary fixation device according to claim 4, characterized in that, An elastic buffer layer is provided on the outside of the clamping rod.

7. A treatment bed, characterized in that, Includes the lower limb auxiliary fixation device as described in any one of claims 3 to 6.

8. The treatment bed according to claim 7, characterized in that, The connecting rod at the end of the telescopic frame is connected to the bed body via a fixed rod, and the fixed rod is connected to another connecting rod of the telescopic frame via the spacing adjustment device.

9. The treatment bed according to claim 8, characterized in that, The clamping part is an airbag, and the two ends of the airbag are respectively connected to the two telescopic frames.

10. The treatment bed according to claim 9, characterized in that, The two telescopic frames are connected by a telescopic control mechanism. A slide rail is fixed on the bed, and a slider that slides with the slide rail is provided on the fixed rod connected to the two telescopic frames.

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