Knee joint inner side gap auxiliary distraction device

Abstract

The utility model relates to the technical field of distraction devices, and discloses a knee joint inner side gap auxiliary distraction device which comprises a distraction mechanism, a first fixing mechanism is fixedly connected to the surface of the upper end of the distraction mechanism, and a second fixing mechanism is fixedly connected to the surface of one side of the distraction mechanism. And the opening mechanism comprises a first electric telescopic rod and two first connecting blocks, motor protection boxes are fixedly connected to the surfaces of the front side and the rear side of the first electric telescopic rod, and second electric telescopic rods are fixedly connected to the surfaces of one sides of the two first connecting blocks. According to the utility model, the first electric telescopic rod is extended, a first connecting block fixedly connected with the output end of the first electric telescopic rod through a rotating shaft is rotated through a rotating motor in a motor protection box while the first electric telescopic rod is extended, and a second electric telescopic rod is extended while the rotating motor is rotated; in this way, the angle between the first fixing mechanism and the second fixing mechanism is enlarged, and therefore the knee joint of the patient is unfolded.

Description

Technical Field

[0001] The utility model relates to the technical field of spreading devices, in particular to an auxiliary spreading device for the medial space of a knee joint. Background Art

[0002] The knee joint is composed of the lower end of the femur, the upper end of the tibia and the patella, and is a trochlear joint. The knee auxiliary distraction device is a medical tool used to help distract the joint gap during knee surgery to facilitate doctors to perform surgery. The auxiliary distraction device is designed to provide convenience during knee surgery and help doctors perform surgery better.

[0003] When the knee joints of some existing patients need to be opened, medical staff usually use both hands to open the patient's knee joints. However, this method cannot free the hands of the medical staff. At the same time, this method is relatively inefficient and time-consuming and labor-intensive. Therefore, technical personnel in this field provide a medial knee joint gap auxiliary distraction device to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a device for auxiliary spreading of the medial gap of the knee joint, by extending the first electric telescopic rod and, at the same time, rotating the first connecting block fixedly connected to its output end through a rotating shaft by a rotating motor inside a motor protection box, and also extending the second electric telescopic rod while rotating, in this way, the angle between the first fixing mechanism and the second fixing mechanism is expanded, thereby opening the patient's knee joint.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for assisting the medial gap of a knee joint to expand, comprising an expansion mechanism, a first fixing mechanism being fixedly connected to the upper end surface of the expansion mechanism, and a second fixing mechanism being fixedly connected to the one side surface of the expansion mechanism;

[0006] The expansion mechanism includes a first electric telescopic rod and two first connecting blocks, the front and rear surfaces of the first electric telescopic rod are fixedly connected to a motor protection box, one side surface of the two first connecting blocks is fixedly connected to a second electric telescopic rod, and the second fixing mechanism includes a semicircular knee pad, and the lower end surface of the semicircular knee pad is fixedly connected to a reinforcement layer.

[0007] Through the above technical scheme, the knee joint can be unfolded by utilizing the cooperation between the strut mechanism and the first fixing mechanism and the second fixing mechanism. The angle of the first connecting block is mechanically adjusted by utilizing the rotating motor inside the motor protection box, so that the angle between the first fixing mechanism and the second fixing mechanism becomes larger, thereby allowing the knee joint to be unfolded. At the same time, a reinforcement layer is fixedly connected to the lower end surface of the semicircular knee pad of the second fixing mechanism. The overall hardness of the semicircular knee pad can be improved by being placed on the left and right sides of the reinforcement layer, thereby improving the service life of the semicircular knee pad.

[0008] Furthermore, a rotating motor is fixedly connected to one side surface of the inner side of the two motor protection boxes, and a rotating shaft is fixedly connected to the output ends of the two rotating motors;

[0009] Through the above technical solution, the first connecting block can be rotated under the action of the rotating motor and the rotating shaft at the output end, thereby expanding the angle between the first fixing mechanism and the second fixing mechanism, thereby expanding the knee joint.

[0010] Furthermore, a second connecting block is fixedly connected to one side surface of the two second electric telescopic rods;

[0011] Through the above technical solution, the main function of the second connecting block is to serve as a connecting medium between the spreading mechanism and the second fixing mechanism.

[0012] Furthermore, a protective layer is fixedly connected to the surface of one side of the inner wall of the semicircular knee pad, and elastic ropes are fixedly connected to the surfaces of both ends of one side of the semicircular knee pad away from the center;

[0013] Through the above technical solution, the inside of the calf can be protected to a certain extent under the action of the protective layer, and at the same time, the second fixing mechanism and the calf are fixed together under the action of the elastic rope.

[0014] Furthermore, one side surface of the two elastic ropes is fixedly connected with Velcro;

[0015] Through the above technical solution, the main function of the Velcro is to connect the two elastic ropes together, so that the semicircular knee pad is fixed on the calf.

[0016] Furthermore, the strengthening layer includes a breathable layer, and the upper surface of the breathable layer is fixedly connected with a waterproof layer;

[0017] Through the above technical solution, the moisture inside the semicircular knee pad can be reduced under the action of the breathable layer, and at the same time, the waterproof layer can effectively prevent moisture from entering the inside of the knee pad.

[0018] Furthermore, a wear-resistant layer is fixedly connected to the upper surface of the waterproof layer;

[0019] Through the above technical solution, the wear resistance of the entire semicircular knee pad can be improved under the action of the wear-resistant layer.

[0020] The utility model has the following beneficial effects:

[0021] 1. The utility model proposes a device for assisting the spreading of the medial gap of the knee joint. After the patient's thigh and calf are fixed by a first fixing mechanism and a second fixing mechanism respectively, when the knee joint needs to be spread out, the first fixing mechanism is extended under the action of a first electric telescopic rod, and the first connecting block is rotated by a rotating motor inside a motor protection box, and the second electric telescopic rod is extended while rotating, thereby expanding the angle between the first fixing mechanism and the second fixing mechanism, and the knee joint can be spread out in this way.

[0022] 2. The utility model proposes a device for auxiliaryly spreading the inner gap of the knee joint. Because the overall structure of the auxiliary spreading device is relatively simple, it is easier to spread the patient's knee joint, and the installation process is relatively simple. The operation steps are not very complicated, thereby reducing the installation time. In addition, the reinforcing layer on the lower end surface of the semicircular knee pad and the breathable layer inside the reinforcing layer can effectively reduce the moisture inside the knee pad, and the waterproof layer can effectively prevent moisture from entering the interior of the semicircular knee pad. At the same time, the wear-resistant layer in the reinforcing layer can improve its wear resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the axle side of the utility model;

[0024] Figure 2 This is a schematic diagram of the axial side of the opening mechanism proposed by the utility model;

[0025] Figure 3 This is an axial side schematic diagram of the second fixing mechanism proposed by the utility model;

[0026] Figure 4 This is a top-sectional schematic diagram of the expansion mechanism proposed by the utility model;

[0027] Figure 5 This is a schematic diagram of the strengthening layer structure proposed in the utility model.

[0028] Legend:

[0029] 1. Opening mechanism; 101. First electric telescopic rod; 102. Motor protection box; 103. Rotating motor; 104. Rotating shaft; 105. First connecting block; 106. Second electric telescopic rod; 107. Second connecting block; 2. First fixing mechanism; 3. Second fixing mechanism; 301. Semicircular knee pad; 302. Protective layer; 303. Elastic rope; 304. Velcro; 305. Strengthening layer; 30501. Breathable layer; 30502. Waterproof layer; 30503. Wear-resistant layer. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Reference Figure 1-5 The utility model provides an embodiment: a medial gap auxiliary distraction device for a knee joint, comprising a distraction mechanism 1, a first fixing mechanism 2 is fixedly connected to the upper end surface of the distraction mechanism 1, and a second fixing mechanism 3 is fixedly connected to the side surface of the distraction mechanism 1.

[0032] By expanding the angle between the first fixing mechanism 2 and the second fixing mechanism 3 under the action of the distraction mechanism 1, the patient's knee joint can be opened in this way.

[0033] Reference Figure 1-2 and Figure 4 The expansion mechanism 1 includes a first electric telescopic rod 101 and two first connecting blocks 105. The front and rear surfaces of the first electric telescopic rod 101 are fixedly connected to a motor protection box 102. One side surface of the two first connecting blocks 105 is fixedly connected to a second electric telescopic rod 106. One side surface of the two motor protection boxes 102 is fixedly connected to a rotating motor 103. The output ends of the two rotating motors 103 are fixedly connected to a rotating shaft 104. One side surface of the two second electric telescopic rods 106 is fixedly connected to a second connecting block 107.

[0034] The first fixing mechanism 2 can be extended under the action of the first electric telescopic rod 101, and the second connecting block 107 fixedly connected to one side of the rotating shaft 104 can be rotated under the action of the rotating motor 103 inside the motor protection box 102 and the output end rotating shaft 104, and the second fixing mechanism 3 can be extended under the action of the second electric telescopic rod 106.

[0035] Reference Figure 3 and Figure 5The second fixing mechanism 3 includes a semicircular kneepad 301, a reinforcing layer 305 is fixedly connected to the lower end surface of the semicircular kneepad 301, a protective layer 302 is fixedly connected to the inner wall surface of the semicircular kneepad 301, elastic ropes 303 are fixedly connected to the two end surfaces of the semicircular kneepad 301 away from the center, and Velcro 304 is fixedly connected to the one side surface of the two elastic ropes 303, the reinforcing layer 305 includes a breathable layer 30501, a waterproof layer 30502 is fixedly connected to the upper end surface of the breathable layer 30501, and a wear-resistant layer 30503 is fixedly connected to the upper end surface of the waterproof layer 30502.

[0036] By fixing a reinforcing layer 305 on the lower surface of the semicircular kneepad 301, the lower surface of the semicircular kneepad 301 can be kept dry and wear-resistant for a long time. The protective layer 302 can protect the inside of the calf. The two elastic ropes 303 can be attached together by the Velcro 304. In this way, the calf and the semicircular kneepad 301 are fixed together.

[0037] Working principle: when the patient's knee joint needs to be expanded, the first fixing mechanism 2 is fixed on the thigh, and the second fixing mechanism 3 is fixed to the calf through the cooperation of the elastic rope 303 and its Velcro 304, and then the spreading mechanism 1 is controlled by a special remote control to extend the first electric telescopic rod 101, and at the same time, the rotating motor 103 inside the motor protection box 102 rotates the first connecting block 105 fixedly connected to its output end through the rotating shaft 104, and the second electric telescopic rod 106 is also extended while rotating, so as to expand the angle between the first fixing mechanism 2 and the second fixing mechanism 3, and in this way, the patient's knee joint is expanded.

[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for assisting the medial space expansion of a knee joint, comprising an expansion mechanism (1), characterized in that: The upper end surface of the spreading mechanism (1) is fixedly connected to a first fixing mechanism (2), and the side surface of the spreading mechanism (1) is fixedly connected to a second fixing mechanism (3); The spreading mechanism (1) comprises a first electric telescopic rod (101) and two first connecting blocks (105); the front and rear surfaces of the first electric telescopic rod (101) are fixedly connected to a motor protection box (102); one side surface of the two first connecting blocks (105) is fixedly connected to a second electric telescopic rod (106); the second fixing mechanism (3) comprises a semicircular knee pad (301); the lower end surface of the semicircular knee pad (301) is fixedly connected to a reinforcement layer (305).

2. The device for assisting the medial space expansion of the knee joint according to claim 1, characterized in that: A rotating motor (103) is fixedly connected to one side surface of the two motor protection boxes (102), and a rotating shaft (104) is fixedly connected to the output ends of the two rotating motors (103).

3. The device for assisting the medial space expansion of the knee joint according to claim 1, characterized in that: A second connecting block (107) is fixedly connected to one side surface of the two second electric telescopic rods (106).

4. The device for assisting the medial space expansion of the knee joint according to claim 1, characterized in that: A protective layer (302) is fixedly connected to the surface of one side of the inner wall of the semicircular knee pad (301), and elastic ropes (303) are fixedly connected to the surfaces of both ends of one side of the semicircular knee pad (301) away from the center.

5. The device for assisting the medial space expansion of the knee joint according to claim 4, characterized in that: Velcro (304) is fixedly connected to one side surface of the two elastic ropes (303).

6. The device for assisting the medial space expansion of the knee joint according to claim 1, characterized in that: The strengthening layer (305) includes a breathable layer (30501), and a waterproof layer (30502) is fixedly connected to the upper surface of the breathable layer (30501).

7. The device for assisting the medial space expansion of the knee joint according to claim 6, characterized in that: The upper surface of the waterproof layer (30502) is fixedly connected with a wear-resistant layer (30503).

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