阅读说明：本技术 一种万向锁定颈椎前路固定钢板 (Universal locking anterior cervical fixing steel plate ) 是由 王凯 陆强 李逸飞 于 2020-06-06 设计创作，主要内容包括：本发明涉及一种万向锁定颈椎前路固定钢板,包括固定钢板和球头锁定螺钉,其中所述固定钢板上均匀设置有多个球头固定螺纹孔,所述球头锁定螺钉的大头端设置有外球头螺纹；多个所述球头锁定螺钉与所述固定钢板固定连接,多个所述球头锁定螺钉分别插入所述固定钢板的多个所述球头固定螺纹孔,并通过大头端的所述外球头螺纹与所述球头固定螺纹孔螺纹连接；每个所述球头固定螺纹孔均能够与所述球头锁定螺钉的大头端的所述外球头螺纹配合从而达到角度调整、锁定的效果。(The invention relates to a universal locking anterior cervical fixing steel plate which comprises a fixing steel plate and ball head locking screws, wherein a plurality of ball head fixing threaded holes are uniformly formed in the fixing steel plate, and external ball head threads are arranged at the large end of each ball head locking screw; the ball head locking screws are fixedly connected with the fixed steel plate, are respectively inserted into the ball head fixing threaded holes of the fixed steel plate and are in threaded connection with the ball head fixing threaded holes through the outer ball head threads with large head ends; each ball head fixing threaded hole can be in threaded fit with the outer ball head of the big head end of the ball head locking screw, so that the effects of angle adjustment and locking are achieved.)

1. A universal locking anterior cervical fixing steel plate comprises a fixing steel plate (1) and ball head locking screws (2), wherein a plurality of ball head fixing threaded holes (1.1) are uniformly formed in the fixing steel plate (1), m ball head fixing threaded holes (1.1) are formed in the long edge direction of the fixing steel plate (1), n ball head fixing threaded holes (1.1) are formed in the narrow edge direction of the fixing steel plate (1), and the ball head fixing threaded holes (1.1) of the fixing steel plate (1) are uniformly distributed in n rows and m columns; the big end of the ball head locking screw (2) is provided with an external ball head thread (2.1); the ball head locking screws (2) are fixedly connected with the fixing steel plate (1), and the ball head locking screws (2) are respectively inserted into the ball head fixing threaded holes (1.1) of the fixing steel plate (1) and are in threaded connection with the ball head fixing threaded holes (1.1) through the outer ball head threads (2.1) with large head ends; each ball head fixing threaded hole (1.1) can be matched with the outer ball head thread (2.1) at the large end of the ball head locking screw (2) so as to achieve the effects of angle adjustment and locking.

2. The gimbaled anterior cervical fixation plate of claim 1, wherein: the fixing steel plate has the ball head fixing threaded hole patterns of 4, 6, 8, 10 and 12.

3. The gimbaled anterior cervical fixation plate of claim 2, wherein: the cross section and the longitudinal section of the fixed steel plate (1) have certain radians.

4. The gimbaled anterior cervical fixation plate of claim 3, wherein: the ball head locking screw (2) can generate an adjustable area of 15 degrees with the normal direction of the fixed steel plate (1).

5. The gimbaled anterior cervical fixation plate of claim 4, wherein: in the process of directionally screwing the ball head locking screw (2), the ball head fixing threaded hole (1.1) and the outer ball head thread (2.1) can be automatically matched.

6. The gimbaled anterior cervical fixation plate of any one of claims 1 to 5, wherein: the single ball head fixing threaded hole (1.1) is provided with four sections of threads, in the installation process, one pair of threads are in staggered tooth matching, and the other pair of threads can generate bad threads to achieve a certain mechanical anti-loosening effect.

Technical Field

The invention belongs to the field of cervical vertebra fixing devices, and particularly relates to a universal locking cervical vertebra anterior fixing steel plate.

Background

The anterior cervical fixing steel plate is mainly used for treating degenerative diseases of cervical intervertebral discs, cervical spondylolisthesis, cervical spinal stenosis, cervical tumors, cervical joint fusion failure, cervical joint prosthesis formation, cervical deformity and the like through internal fixation operation. The internal fixation of the anterior cervical fixing steel plate is a better method for stabilizing the cervical vertebra in the anterior cervical operation, and the bone grafting block can be reliably fixed, so that the fusion is promoted, the natural physiological curvature of the diseased cervical vertebra is effectively maintained, and the normal physiological function of the cervical vertebra is recovered. The anterior cervical fixing steel plate needs to meet the internal fixation treatment principles of low incisura, anti-withdrawal locking, narrow width, less compressed blood vessels and the like. The guide hole locking mode of the existing fixed steel plate has a small adjusting range, and the universal adjusting and indexing of the screw thread is limited.

Disclosure of Invention

The invention aims to solve the technical problem of providing a universal locking anterior cervical spine fixing steel plate which is convenient to adjust the angle, simple in structure, firm and reliable in fixing, and aims to overcome the defects of the prior art.

In order to solve the technical problems, the invention adopts the following specific technical scheme:

a universal locking anterior cervical fixing steel plate comprises a fixing steel plate and ball head locking screws, wherein a plurality of ball head fixing threaded holes are uniformly formed in the fixing steel plate, m ball head fixing threaded holes are formed in the long edge direction of the fixing steel plate, n ball head fixing threaded holes are formed in the narrow edge direction of the fixing steel plate, and the ball head fixing threaded holes of the fixing steel plate are uniformly distributed in n rows and m columns; the big end of the ball head locking screw is provided with an external ball head thread; the ball head locking screws are fixedly connected with the fixed steel plate, are respectively inserted into the ball head fixing threaded holes of the fixed steel plate and are in threaded connection with the ball head fixing threaded holes through the outer ball head threads with large head ends; each ball head fixing threaded hole can be in threaded fit with the outer ball head of the big head end of the ball head locking screw, so that the effects of angle adjustment and locking are achieved.

Further, the fixing steel plate has a ball head fixing threaded hole pattern of 4, 6, 8, 10 and 12.

Furthermore, the cross section and the longitudinal section of the fixed steel plate both have certain radians.

Further, the ball locking screw can create an adjustable area of 15 degrees from the normal to the fixed steel plate.

Further, in the process of directionally screwing the ball head locking screw in, the ball head fixing threaded hole and the outer ball head thread can be automatically matched.

Furthermore, a single ball head fixing threaded hole is provided with four sections of threads, in the installation process, one pair of threads are in staggered tooth matching, and the other pair of threads can generate bad threads to achieve a certain mechanical anti-loosening effect.

Compared with the prior art, the invention has the following characteristics and progresses:

the universal locking anterior cervical fixing steel plate is uniformly provided with a plurality of ball head fixing threaded holes, and each ball head fixing threaded hole can be in threaded fit with an outer ball head at the large end of a ball head locking screw so as to achieve the effects of angle adjustment and locking; the cross section and the longitudinal section of the fixed steel plate have certain radians, so that the fixed steel plate can be better attached to a vertebral body during fixing, and the fixing is more reliable; during the process of directionally screwing the ball head locking screw in, the ball head fixing threaded hole and the outer ball head thread can be automatically matched, so that guiding installation equipment can be omitted; four sections of threads are arranged in a single ball head fixing threaded hole, in the installation process, one pair of threads are in staggered tooth matching, and the other pair of threads can generate broken threads to achieve a certain mechanical anti-loosening effect; the whole installation process is simple to operate, good in adjustment effect and reliable and stable in installation.

Drawings

FIG. 1: the structure schematic diagram of the universal locking anterior cervical fixing steel plate;

FIG. 2: the assembly top view of the universal locking anterior cervical fixing steel plate;

FIG. 3: the front view of the assembly of the universal locking anterior cervical fixing steel plate;

FIG. 4: the assembly side view of the universal locking anterior cervical fixing steel plate;

FIG. 5: a top view of the fixed steel plate;

FIG. 6: fixing a front view of the steel plate;

FIG. 7: a fixed steel plate ball head fixed threaded hole section view;

FIG. 8: ball head locking screw structure diagram.

Detailed Description

The technical scheme of the invention is further explained in detail by combining the drawings and the specific examples.

As shown in fig. 1-8, a universal locking anterior cervical fixing steel plate comprises a fixing steel plate 1 and ball head locking screws 2, wherein a plurality of ball head fixing threaded holes 1.1 are uniformly arranged on the fixing steel plate 1, m ball head fixing threaded holes 1.1 are arranged in the long edge direction of the fixing steel plate 1, and n ball head fixing threaded holes 1.1 are arranged in the narrow edge direction, that is, the ball head fixing threaded holes 1.1 of the fixing steel plate 1 are uniformly distributed in n rows and m columns; the big end of the ball head locking screw 2 is provided with an external ball head thread 2.1; the ball head locking screws 2 are fixedly connected with the fixed steel plate 1, and the ball head locking screws 2 are respectively inserted into the ball head fixed threaded holes 1.1 of the fixed steel plate 1 and are in threaded connection with the ball head fixed threaded holes 1.1 through external ball head threads 2.1 with large head ends; each ball head fixing threaded hole 1.1 can be matched with an outer ball head thread 2.1 of the big head end of the ball head locking screw, so that the effects of angle adjustment and locking are achieved. The fixing steel plate 1 has a pattern of 4, 6, 8, 10, 12 ball head fixing threaded holes (exemplified by a 6 hole pattern in the drawing), i.e., m × n =4, 6, 8, 10 or 12. The cross section and the longitudinal section of the fixed steel plate 1 both have certain radians, so that the fixed steel plate can be better attached to a vertebral body when being fixed, and the fixation is more reliable. The ball lock screw 2 can create an adjustable region of 15 degrees from the normal to the fixed steel plate 1 (as shown in fig. 1, the adjustment of the middle ball lock screw 2 is schematic). In the process of directionally screwing the ball head locking screw 2 in, the ball head fixing threaded hole 1.1 and the outer ball head thread 2.1 can be automatically matched, and guiding installation equipment can be omitted. The single ball head fixing threaded hole 1.1 is provided with four sections of threads, one pair of threads are in staggered tooth matching in the installation process, and the other pair of threads can generate broken threads to achieve a certain mechanical anti-loosening effect; the whole installation process is simple to operate, good in adjustment effect and reliable and stable in installation.

However, those skilled in the art should realize that the above embodiments are illustrative only and not limiting to the present invention, and that changes and modifications to the above described embodiments are intended to fall within the scope of the appended claims, provided they fall within the true spirit of the present invention.