Cervical vertebra fixator with adjustable opening degree

Abstract

The invention discloses a cervical vertebra fixator with an adjustable opening degree, and belongs to the technical field of medical instruments. The support comprises a front support and a rear support connected with the front support, the front support comprises an upper support body and a lower support body, the ends of the upper support body and the lower support body are rotationally connected, opening and closing limiting is conducted through a connecting shaft, and the position of the connecting shaft is adjusted through a locking assembly so that the opening and closing degree of the upper support body and the lower support body can be adjusted; the locking assembly comprises a base, two toothed chains are arranged on the base in a penetrating mode, the outer ends of the two toothed chains are connected with the connecting shafts on the two sides respectively, and a locking structure, a button and an elastic piece are arranged on the base. Based on the structural design of the locking assembly, the toothed chain is connected with the connecting shaft arranged at the connecting position of the front support and the rear support, the toothed chain is limited in a one-way mode through the locking structure, the position of the toothed chain can be adjusted by pressing the button to control the limiting state of the locking structure, the button and the locking structure are automatically reset through the elastic piece, and the safety of the toothed chain is improved. And the opening degree between the front support and the rear support can be quickly and conveniently adjusted.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices and is used for fixing the cervical vertebra, and specifically relates to a cervical vertebra fixator with adjustable opening degree. Background Art

[0002] The human neck connects the head and the trunk, is flexible but vulnerable to external force damage. Long-term head-down work and study cause cumulative damage to the neck. As people age, the cervical vertebra is prone to degenerative changes, which can lead to cervical fractures, degeneration of cervical intervertebral discs, joints, etc., causing cervical instability, changes in cervical curvature, and cervical spondylosis, seriously affecting the health of patients. Cervical spondylosis patients use cervical collars to protect their necks, which can effectively improve the stability of the damaged part and accelerate recovery. However, due to the large individual differences in the human body, the existing cervical collars have problems such as poor curvature adjustment function and inconvenient operation, cannot meet the usage needs of various people, and affect their comfort and operation convenience. Summary of the Invention

[0003] Aiming at the above problems existing in the prior art, the purpose of the present invention is to provide a cervical vertebra fixator with adjustable opening degree, which can realize the rapid adjustment of the cervical collar curvature.

[0004] The present invention provides the following technical solution: A cervical vertebra fixator with adjustable opening degree, including a front support and a rear support connected to the front support. The front support includes an upper bracket and a lower bracket. The ends between the upper and lower brackets are rotatably connected and limited in opening and closing by a connecting shaft. The connecting shaft is adjusted in position through a locking component to realize the adjustment of the opening degree of the upper and lower brackets. The locking component includes a base fixed on the lower bracket. Two tooth chains are penetrated through the base. The outer ends of the two tooth chains are respectively connected to the connecting shafts on both sides. The base is provided with a locking structure for unidirectional limiting of the tooth chain, a button for pressing the locking structure, and an elastic member for pressing and resetting the button.

[0005] Further, the tooth chain is a plastic part with a strip structure. One side is provided with a serrated section, and the other side end is provided with a jack structure. The inner end of the connecting shaft is provided with a plug structure matching the jack structure.

[0006] Further, waist-shaped holes are opened on both the upper and lower brackets. The connecting shaft passes through the corresponding waist-shaped holes on the two brackets and is connected to the corresponding tooth chain.

[0007] Further, the base is pressed and fixed in the lower bracket through a pressing plate. The pressing plate is provided with a sliding groove for facilitating the movement of the tooth chain.

[0008] Further, two empty slots are opened on the base. The locking structure is a plastic part and is arranged in the corresponding empty slots. The locking structure is correspondingly arranged with the tooth chain. Its bottom is provided with serrations for locking and limiting the tooth chain, and its upper part is provided with a pressure-bearing structure.

[0009] Furthermore, the button is fixedly connected to the base. Inside the button, there is a pressing block for pressing the pressure-bearing structure on the locking structure, and the bottom of the button is in contact with the elastic member.

[0010] Furthermore, a pressing plate structure for limiting is provided at the outer end of the connecting shaft.

[0011] By adopting the above technology, compared with the prior art, the beneficial effects of the present invention are as follows:

[0012] In the present invention, based on the structural design of the locking assembly, the tooth chain is connected to the connecting shaft provided at the connection of the front and rear supports. The tooth chain is unidirectionally limited by the locking structure, and the limiting state of the locking structure is controlled by pressing the button, so that the position of the tooth chain can be adjusted, and the button and the locking structure are automatically reset by the elastic member, and the opening and closing degree between the front and rear supports can be adjusted quickly and conveniently. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0014] Figure 2 is a schematic diagram of the internal structure of the lower bracket of the present invention;

[0015] Figure 3 is a schematic diagram of the assembly structure of the pressing plate and the base of the present invention;

[0016] Figure 4 is a three-dimensional structure diagram of the base of the present invention;

[0017] Figure 5 is a schematic diagram of the internal structure of the base of the present invention;

[0018] Figure 6 is a schematic diagram of the assembly structure of the connecting shaft of the present invention;

[0019] Figure 7 is a three-dimensional structure diagram of the connecting shaft of the present invention;

[0020] Figure 8 is a three-dimensional structure diagram of one side of the tooth chain of the present invention;

[0021] Figure 9 is a schematic diagram of the structure of the other side of the tooth chain of the present invention;

[0022] Figure 10 is a three-dimensional structure diagram of the button of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0023] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with the specification drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0024] On the contrary, the present invention covers any alternatives, modifications, equivalent methods and solutions made within the spirit and scope of the present invention as defined by the claims. Further, in order to enable the public to have a better understanding of the present invention, some specific details are described in detail in the following detailed description of the present invention. Those skilled in the art can fully understand the present invention without the description of these details.

[0025] Please refer to Figures 1 - 10 , a cervical fixator with adjustable opening degree, including a front support A and a rear support B. The front and rear supports are connected by Velcro or nylon fasteners, etc. The front support A and the rear support B are both curved surface structures adapted to the curve of the human neck.

[0026] Specifically, the front support A includes an upper bracket 1 and a lower bracket 2. The two sides of the upper bracket 1 and the lower bracket 2 are hinged and limited in opening and closing by a connecting shaft 4.

[0027] Specifically, a locking assembly is provided on the lower bracket 2 for locking and controlling the connecting shaft 4. The locking assembly is made of plastic and includes a base 3, a toothed chain 5, a locking structure 6, a button 7, an elastic member 8 and a pressing plate 9.

[0028] The pressing plate 9 is snap-fitted inside the lower bracket 2 and applies a squeezing force to the bottom of the base 3, so that the bottom of the base 3 is in close contact with the inner wall of the lower bracket 2 to limit and fix the base 3. Two chutes 901 are provided on the pressing plate 9, one above and one below.

[0029] The toothed chain 5 is a plastic part with a strip structure. One side is provided with an inclined serrated section 501, and the other end is provided with a jack structure 502. Two toothed chains 5 are placed opposite to each other in the two chutes 901.

[0030] Two empty slots 301 corresponding to the toothed chain 5 are provided on the base 3. A locking structure 6 is arranged in the empty slot 301. The locking structure 6 includes a serrated part 601 with an inclined lower part and a bearing structure 602 with an upper part. The serrated parts 601 in the two locking structures 6 are arranged opposite to each other to perform one-way locking and limiting on the two toothed chains 5 respectively.

[0031] An installation block 302 is provided in the middle of the base 3. The button 7 is inserted into the installation block 302, and the outer shell 201 of the lower bracket 2 limits the button to prevent it from detaching. A pressing block 701 is provided inside the button 7, and the pressing block 701 is arranged in one-to-one correspondence with the pressure-bearing structure 602. When the button 7 is pressed down, the pressing block 701 applies a force to the pressure-bearing structure 602, driving the overall deformation of the locking structure 6, and the sawtooth 601 rotates obliquely upward, so that the sawtooth 601 disengages from the sawtooth section 501 on the tooth chain 5, and the position of the tooth chain 5 can be adjusted, thereby adjusting the position of the connecting shaft 4, so that the opening and closing degree between the upper and lower brackets meets the usage requirements.

[0032] Specifically, a plug structure 401 is provided at the inner end of the connecting shaft 4, and a pressing plate structure 402 for limiting is provided at the outer end. Arc-shaped grooves are provided on both sides of the upper and lower brackets corresponding to the connecting shaft 4. One end of the plug structure 401 on the connecting shaft 4 passes through the arc-shaped grooves on the corresponding sides of the two brackets and is connected in cooperation with the jack structure 502 on the corresponding tooth chain 5.

[0033] The usage process of this embodiment is as follows:

[0034] The user connects the front and rear supports together through structures such as Velcro, puts them on the user's neck, and then presses the button 7. The pressing block 701 on the button 7 squeezes the pressure-bearing structure 602 on the locking structure 6, causing the locking structure 6 to deform. The sawtooth 601 on the locking structure 6 disengages from the sawtooth section 501 on the corresponding tooth chain 5, and the opening and closing degree between the upper bracket and the lower bracket can be adjusted by pulling the tooth chain 5. After the adjustment is completed, the button 7 is released, and the button 7 resets under the action of the elastic member. The sawtooth 601 locks the tooth chain 5, and the required opening and closing angle is maintained between the upper and lower brackets.

[0035] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cervical fixator with adjustable opening and closing, characterized in that: The invention comprises a front support (A) and a rear support (B) connected to the front support (A), wherein the front support (A) comprises an upper support (1) and a lower support (2), wherein the ends of the upper and lower supports are rotatably connected and are opened and closed by a connecting shaft (4), wherein the connecting shaft (4) is position-adjusted by a locking assembly to adjust the opening and closing degree of the upper and lower supports; wherein the locking assembly comprises a base (3) fixed to the lower support (2), wherein two tooth chains (5) are passed through the base (3), wherein the outer ends of the two tooth chains (5) are respectively connected to the connecting shafts (4) on both sides, and wherein the base (3) is provided with a locking structure (6) for unidirectionally limiting the tooth chain (5), a button (7) for pressing the locking structure (6), and an elastic member (8) for pressing and resetting the button (7).

2. A cervical fixator with adjustable opening and closing according to claim 1, characterized in that: The toothed chain (5) is a plastic part with a strip-shaped structure, one side of which is provided with a sawtooth segment (501), and the other end is provided with a socket structure (502), and the inner end of the connecting shaft (4) is provided with a plug structure (401) matching the socket structure (502).

3. The cervical fixator with adjustable opening and closing according to claim 1, characterized in that: The upper and lower brackets are both provided with waist-shaped holes, and the connecting shaft (4) passes through the corresponding waist-shaped holes on the two brackets and is connected to the corresponding toothed chain (5).

4. A cervical fixator with adjustable opening and closing according to claim 3, characterized in that: The base (3) is pressed and fixed in the lower bracket (2) by a pressing plate (9), and a sliding groove (901) is provided on the pressing plate (9) to facilitate the movement of the toothed chain (5).

5. The cervical fixator with adjustable opening and closing according to claim 4, characterized in that: The base (3) is provided with two empty slots (301); the locking structure (6) is a plastic part, which is arranged in the corresponding empty slots (301); the locking structure (6) is arranged corresponding to the toothed chain (5); a sawtooth (601) for locking and limiting the toothed chain (5) is provided at the bottom thereof, and a pressure-bearing structure (602) is provided at the top thereof.

6. The cervical fixator with adjustable opening and closing according to claim 3, characterized in that: The button (7) is fixedly connected to the base (3); a pressing block (701) for pressing the pressure-bearing structure (602) on the locking structure (6) is provided inside the button (7); and the bottom of the button (7) is in contact with the elastic member (8).

7. The cervical fixator with adjustable opening and closing according to claim 2, characterized in that: The outer end of the connecting shaft (4) is provided with a pressure plate structure (402) for limiting position.

Images