Fusion cage stable locking steel plate for fixing anterior outer side of lower neck of anterior cervical micro-channel

Abstract

The utility model discloses a fusion cage stabilizing and locking steel plate for fixing the front outer side of the lower neck of an anterior cervical micro-channel, which belongs to the technical field of medical equipment and comprises a locking plate main body, a locking hole is formed in the center of the locking plate main body, and a locking screw is matched in the locking hole in a threaded manner. Main holes are symmetrically formed in the two sides of the locking hole, the included angle between the central axes of the main holes in the two sides is 24 degrees, main nails are arranged in the main holes in a matched mode according to the inclination angle, and the top ends of the main nails are limited in the main holes. According to the utility model, the locking plate with proper length is selected, the locking screw is screwed into the locking hole, the locking plate is not locked, the main nail with proper length is screwed into the main hole of the locking plate according to an inclined angle, the locking screw is tightened, and the tail part of the main nail is blocked by the locking plate to achieve the purpose of locking the main nail, so that the upper and lower vertebral bodies of the steel plate fusion cage are integrated; therefore, the purpose of immediate and firm fixation is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a fusion device for anterolateral cervical fixation under an anterior cervical microchannel to stabilize and lock a steel plate. Background Art

[0002] Anterior cervical surgery was first proposed in 1952. After nearly 70 years of development, anterior cervical decompression, fixation, fusion, support and fixation have been developed. Literature reports that the anterior cervical plate and screw fixation system has obvious advantages in biomechanics and clinical efficacy. It can stabilize the cervical sequence, promote bone graft fusion, and correct spinal deformity. It has become the gold standard for anterior cervical surgery. Plates and screws are used for fixation in anterior cervical surgery, and a variety of anterior cervical plate systems have been developed, including non-locking non-rigid type, locking rigid type, variable angle semi-restricted type, and sliding semi-restricted type.

[0003] Although the stabilizing effect of the anterior cervical spine nail plate system has been widely recognized, the design of the anterior cervical open surgery and the plate itself and the series of complications caused by it have also attracted more and more attention from clinicians and scholars. Common complications of surgery include: spinal cord injury, recurrent laryngeal nerve injury, hoarseness, esophageal injury, epidural hematoma formation, etc., which often lead to poor surgical results or even surgical failure. With the vigorous development of precision, minimally invasive, and intelligent medical care, minimally invasive spinal surgery has made rapid progress in recent years and has a tendency to replace open surgery, especially lumbar minimally invasive technology (including endoscopic and channel), which is very mature in clinical application and has gradually been popularized in county-level hospitals. However, the progress of minimally invasive technology in the cervical spine is slow, especially the lack of qualitative progress in the clinical application of minimally invasive technology in the anterior cervical spine.

[0004] There are several types of fixation plates used for anterior cervical open surgery: 1. Non-locking plates in the early stage, which are basically eliminated now; 2. Locking plates, which are widely used now. One type is the plate and the screw itself locked, and the other type is the plate and the screw locked. After the screw is tightened, the screw tail cap is locked with the tapping of the small screw next to it. The products of each manufacturer are slightly different, but the principle is the same; 3. Anterior special-shaped plates, such as: wing-shaped plates, three-leaf plates, etc.; 4. Fusion fixation system that combines fusion device and plate into one, such as: zero-notch fusion fixation system, etc. The existing types of plates are not suitable for anterior cervical microchannel surgery. All of them are anteriorly inserted fusion devices and anterior plate fixation, which causes great tissue damage and many complications. Therefore, we proposed a stable locking plate for fusion device for anterolateral fixation of the neck under anterior cervical microchannel to solve the above problems.

[0005] The above information disclosed in this background technology is only used to increase the understanding of the background technology of the present invention and therefore, it may include information that does not constitute the prior art known to ordinary technicians in this field. Utility Model Content

[0006] The utility model aims to provide a fusion device for anterolateral cervical fixation under anterior cervical microchannel and a stable locking steel plate, so as to solve the problems in the current market raised by the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides a stable locking steel plate for fusion device for anterior cervical microchannel fixation of the anterior and lateral neck, including a locking plate body, a locking hole is opened in the center of the locking plate body and a locking screw is matched with the inner thread of the locking hole, main holes are symmetrically arranged on both sides of the locking hole, the angle between the central axes of the main holes on both sides is 24 degrees, and a main nail is matched in the main hole at an inclined angle and the top end of the main nail is limited to the main hole.

[0008] Preferably, the inner wall of the locking hole is provided with an internal thread, and the bottom end of the locking screw passes through the locking hole and is connected to the fusion device.

[0009] Preferably, the main screw is a cancellous bone screw with a diameter of 3.5 mm.

[0010] Preferably, the locking plate body has a thickness of 3 mm and a length of 16 mm, 18 mm, or 20 mm.

[0011] Preferably, the locking hole has a height of 1 mm and a diameter of 2.7 mm.

[0012] Preferably, the locking screw is 10 mm in length.

[0013] Preferably, the main hole has a diameter of 5 mm.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] (1) The utility model selects a locking plate of appropriate length, screws a locking screw into the locking hole, does not lock, screws a main nail of appropriate length into the main hole of the locking plate at an inclined angle, tightens the locking screw, and the locking plate blocks the tail of the main nail to achieve the purpose of locking the main nail, so that the upper and lower vertebrae of the steel plate fusion device become a whole, thereby achieving the purpose of immediate and firm fixation.

[0016] (2) The utility model is suitable for completing surgery under the anterior cervical micro-access system. The operation is simple, the learning curve is short, the patient recovers quickly, the trauma is small, and the therapeutic effect can achieve the same effect as open surgery, truly achieving the purpose of precise and minimally invasive treatment, and can be widely used in clinical practice.

[0017] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0020] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model.

[0021] In the figure: 1, locking plate body; 101, locking hole; 102, main hole; 2, locking screw; 3, main nail. DETAILED DESCRIPTION

[0022] 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. It should be pointed out that the drawings are schematic and not drawn to scale. For the sake of clarity and convenience in the figures, the relative sizes and proportions of the parts shown in the figures are exaggerated or reduced in size, and any size is only exemplary and not restrictive.

[0023] See also Figure 1-Figure 3 A fusion device for anterolateral cervical fixation under anterior cervical microchannel, comprising a locking plate body 1, the locking plate body 1 has a thickness of 3 mm and a length of one of 16 mm, 18 mm, and 20 mm.

[0024] The locking plate body 1 has a locking hole 101 in the center, and the locking hole 101 has an internal thread with a locking screw 2. The inner wall of the locking hole 101 has an internal thread, and the bottom end of the locking screw 2 passes through the locking hole 101 and is connected to the fusion device. The locking hole 101 has a height of 1 mm and a diameter of 2.7 mm, and the locking screw 2 has a length of 10 mm.

[0025] Main holes 102 are symmetrically arranged on both sides of the locking hole 101. The diameter of the main hole 102 is 5 mm. The angle between the central axes of the main holes 102 on both sides is 24 degrees. The main hole 102 is equipped with a main nail 3 at an inclined angle and the top end of the main nail 3 is limited in the main hole 102. The main nail 3 is a cancellous bone screw with a diameter of 3.5 mm. The top diameter of the main nail 3 is larger than the diameter of the main hole 102.

[0026] Working principle of this embodiment: when using the anterior cervical microchannel anterolateral cervical fixation fusion device to stabilize the locking plate, first, according to the distance between the centers of the upper and lower cervical vertebrae, select the locking plate body 1 of appropriate specifications, screw the locking screw 2 into the locking hole 101 without locking it, screw the main nail 3 of appropriate length into the main hole 102 at an inclined angle, and then tighten the locking screw 2 to connect it with the fusion device. The locking plate body 1 blocks the tail of the main nail 3 to achieve the purpose of locking the main nail 3, so that the upper and lower vertebrae of the plate fusion device become a whole, thereby achieving the purpose of immediate and firm fixation, and the fusiform part of the hook vertebral joint fusion device on the opposite side of the gap is stable, which conforms to the biomechanics of the cervical spine.

[0027] The standard parts used in this utility model can be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0028] In the description of the present utility model, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. The meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0031] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine the different embodiments or examples and the features of the different embodiments or examples described in this specification without contradiction.

[0032] In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other.

[0033] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may 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 shall be included in the protection scope of the present invention.

Claims

1. A fusion device for anterolateral cervical fixation under anterior cervical microchannel to stabilize and lock a steel plate, characterized in that: The invention comprises a locking plate body (1), wherein a locking hole (101) is provided at the center of the locking plate body (1), and a locking screw (2) is provided in the locking hole (101) through an internal thread, main holes (102) are symmetrically provided on both sides of the locking hole (101), and the angle between the central axes of the main holes (102) on both sides is 24 degrees, and a main nail (3) is provided in the main hole (102) at an inclined angle, and the top end of the main nail (3) is limited in the main hole (102).

2. The fusion device for anterolateral cervical fixation under anterior cervical microchannel according to claim 1 is characterized in that: The inner wall of the locking hole (101) is provided with an internal thread, and the bottom end of the locking screw (2) passes through the locking hole (101) and is connected to the fusion device.

3. The fusion device for anterolateral cervical fixation under anterior cervical microchannel according to claim 1 is characterized by: The main screw (3) is a cancellous bone screw with a diameter of 3.5 mm.

4. The fusion device for anterolateral cervical fixation under anterior cervical microchannel according to claim 1 is characterized in that: The locking plate body (1) has a thickness of 3 mm and a length of one of 16 mm, 18 mm and 20 mm.

5. The fusion device for anterolateral cervical fixation under anterior cervical microchannel according to claim 1 is characterized in that: The locking hole (101) has a height of 1 mm and a diameter of 2.7 mm.

6. The fusion device for anterolateral cervical fixation under anterior cervical microchannel according to claim 1 is characterized by: The locking screw (2) is 10 mm long.

7. The fusion device for anterolateral cervical fixation under anterior cervical microchannel according to claim 1 is characterized by: The main hole (102) has a diameter of 5 mm.

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