CN116138861A - Adjustable titanium net internal fixation system - Google Patents

Abstract

The invention relates to the field of medical equipment, and relates to an adjustable titanium mesh internal fixing system which comprises a fixing body, an adjustable body, an upper self-stabilizing end cover and a lower self-stabilizing end cover, wherein the adjustable body is in threaded connection with the inside of the fixing body, the upper self-stabilizing end cover is in universal rotation connection with the upper end of the adjustable body, the lower self-stabilizing end cover is in universal rotation connection with the lower end of the fixing body, the upper self-stabilizing end cover and the lower self-stabilizing end cover both comprise an end cover body, a fixing part, a fixing screw and a driving rod, an adjusting groove is arranged on the left side of the end cover body, a screw hole I communicated with the adjusting groove is arranged on the right side of the end cover body, the fixing part is in sliding connection with the right side of the end cover body, a screw hole II is arranged in the fixing part, the fixing screw is in threaded connection with the screw hole II, a screw hole III is arranged in the fixing part, the driving rod is in threaded connection with the screw hole I, and the length-adjustable titanium mesh and the angle-adjustable self-stabilizing end cover are in adaptive adjustment, so that effective support is realized.

Description

Adjustable titanium net internal fixation system

Technical Field

The invention relates to the field of medical instruments, in particular to an adjustable titanium net internal fixing system.

Background

Due to various factors such as wide use of intelligent equipment, aging of population, long-lasting work and the like, spinal diseases become common diseases and frequently-occurring diseases endangering human health, wherein cervical vertebra diseases and lumbar vertebra diseases account for the vast majority. In addition, there are additional surgical procedures due to accidents, tumors, and other factors. Spinal interbody fusion is a common technique for treating spinal diseases, including herniated disk, degenerative disease, etc., and is a classical surgical technique for treating various spinal diseases, for establishing and maintaining stability of the spine, and restoring the height between vertebrae and physiological curvature of the spine.

The traditional titanium mesh is generally of a simple columnar structure and is used for replacing the vertebral body after the vertebral body is completely cut or completely resected, the traditional titanium mesh is often used together with an internal fixing device such as a fixing plate, a nail rod and the like to prevent the titanium mesh from sinking, and the fixing device protrudes out of the front edge of the vertebral body after implantation, so that irritation of surrounding soft tissues is easily caused, and the incidence rate of surgical complications is increased; meanwhile, due to the unique physiological curvature of the spine, the preset product angle and the specific length size cannot be effectively attached to the anatomical structure of the human body, and the required angle and length are formed by cutting in the operation, so that the operation effect cannot be maximized; in particular, when the patient's affected part is a cervical-thoracic, thoracic-lumbar transition segment, the titanium mesh of a single gauge cannot be completely matched with the vertebral body gauge, and an effective supporting effect cannot be achieved.

Disclosure of Invention

The invention provides an adjustable titanium net internal fixing system for solving the problems in the prior art.

The aim of the invention can be achieved by the following technical scheme: an adjustable titanium mesh internal fixation system comprising: the adjustable self-stabilizing end cover comprises a fixing body, an adjustable body, an upper self-stabilizing end cover and a lower self-stabilizing end cover, wherein the adjustable body is in threaded connection with the inside of the fixing body, the upper self-stabilizing end cover is in universal rotation connection with the upper end of the adjustable body, the lower self-stabilizing end cover is in universal rotation connection with the lower end of the fixing body, the upper self-stabilizing end cover and the lower self-stabilizing end cover respectively comprise an end cover body, a fixing part, a fixing screw and a driving rod, an adjusting groove which is formed in the left side of the end cover body in a reducing mode through an opening is formed in the left side of the end cover body, a first screw hole communicated with the adjusting groove is formed in the right side of the end cover body, an inclined guide hole is formed in the right side of the end cover body, a second screw hole communicated with the guide hole is formed in the fixing part in a sliding mode, a third screw hole communicated with the first screw hole is formed in the fixing part, and a third screw hole is in threaded connection with the first screw hole.

Further improvement, be equipped with ball socket groove one on the fixed body, the lower self-stabilization end cover upper end is equipped with ball socket portion one of being connected with ball socket groove one lock, be equipped with cross groove one in the ball socket portion one, adjustable body upper end is equipped with ball socket groove two, go up self-stabilization end cover lower extreme be equipped with ball socket portion two of ball socket groove two lock joint, be equipped with cross groove two in the ball socket portion two.

Further improvement, the right side symmetry of end cover body is equipped with two sets of spouts, the left side symmetry of fixed part is equipped with two sets of sliders, the slider slides and sets up in the spout.

Further improvement, a guide groove coaxial with the screw hole is arranged in the adjusting groove.

Further improvement, the driving rod is provided with a straight groove.

Further improvement, the fixed body is connected with a gear part in a rotating way, and the inner side of the gear part is in threaded connection with the adjustable body.

Further improvement, the end cover body is provided with anti-slip teeth.

Further improvement, the fixed body middle part is equipped with the through-hole.

Further improvement, fixed body side is equipped with connecting portion, the connecting portion middle part is equipped with the threaded connection hole, be equipped with the slot on the connecting portion, the slot sets up in threaded connection hole both sides.

Compared with the prior art, the adjustable titanium net internal fixing system has the beneficial effects that:

according to the invention, the titanium mesh system with adjustable length and multi-specification diameter connection is used according to the clinical actual operation requirement, so that the titanium mesh system is not limited to be applied to a specific section, and the problem that the traditional titanium mesh has single model and can not flexibly select proper length in operation can be solved; meanwhile, the two ends of the titanium mesh body can be matched with flat or angular self-stabilization end covers, the angles of the end covers can be adjusted to a certain extent on the basis of the preset angles, the titanium mesh body is suitable for normal or abnormal vertebral bodies to be corrected, the design of the end covers enables the titanium mesh to be optimally matched with physiological curvature without cutting in operation, and two different forms of angle adjustment forms are designed, so that clinical selectivity is further improved; the end cover is provided with a locking structure, so that the product can be effectively combined with the vertebral body, and immediate stability is provided.

Drawings

FIG. 1 is a schematic view of the structure of the present invention

FIG. 2 is a schematic view of the structure of the inside of the present invention

FIG. 3 is a schematic view of the structure of the partial enlarged view of FIG. 2

FIG. 4 is a schematic structural view of the upper self-stabilizing end cap or the lower self-stabilizing end cap according to the present invention

FIG. 5 is a schematic view of the structure of FIG. 4 at another view angle

FIG. 6 is a schematic view of the assembly of FIG. 4 in a disassembled configuration

FIG. 7 is a schematic view of a structure of the invention for use with a holder

In the figure, 1-fixed body, 11-ball socket groove I, 12-gear part, 2-adjustable body, 21-ball socket groove II, 3-upper self-stabilizing end cover, 31-ball socket part II, 32-cross groove II, 4-lower self-stabilizing end cover, 41-ball socket part I, 42-cross groove I, 51-end cover body, 511-anti-slip tooth, 52-fixed part, 521-screw hole II, 522-screw hole III, 523-slider, 53-screw hole I, 54-adjusting groove, 55-guiding groove, 56-guide hole, 57-chute, 6-fixing screw, 7-connecting part, 71-threaded connecting hole, 72-slot, 73-extractor, 8-driving rod, 81-straight groove, 9-through hole.

Detailed Description

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, as well as, for example, fixedly coupled, detachably coupled, or integrally coupled, unless otherwise specifically indicated and defined. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

The technical scheme of the invention is further described below with reference to the examples and the accompanying figures 1 to 7.

Example 1

An adjustable titanium mesh internal fixation system comprising: the titanium mesh body is composed of a fixed body 1, an adjustable body 2, an upper self-stabilizing end cover 3 and a lower self-stabilizing end cover 4, the fixed body 1 and the adjustable body 2 are in threaded connection with the inside of the fixed body 1, the upper self-stabilizing end cover 3 is in universal rotation connection with the upper end of the adjustable body 2, the lower self-stabilizing end cover 4 is in universal rotation connection with the lower end of the fixed body 1, the upper self-stabilizing end cover 3 and the lower self-stabilizing end cover 4 respectively comprise an end cover body 51, a fixed part 52, a fixed screw 6 and a driving rod 8, an adjusting groove 54 with an opening reduced leftwards is arranged on the left side of the end cover body 51, a screw hole I53 communicated with the adjusting groove 54 is arranged on the right side of the end cover body 51, an inclined guide hole 56 is arranged on the right side of the end cover body 51, the fixed part 52 is in sliding connection with the right side of the end cover body 51, two guide holes 521 communicated with the guide hole 56 are arranged in the fixed part 52, the fixed screw 6 is in the screw hole II 521 in a threaded connection mode, three 522 communicated with one 53 are arranged in the fixed part 52, the driving rod 8 is in the screw hole 8 is in threaded connection with the three screw holes 53, the two groups of the driving rod 8 are in a symmetric mode, and the two groups of sliding blocks are arranged in the two groups of the two side of the driving rod 53 are symmetric with the driving rod 53.

As shown in fig. 1 to 6, the method of using the present invention:

the traditional Chinese medicine in operation is according to the X-ray film planning before operation, selects the titanium net body of suitable length to implant in the centrum, as the centrum effectual centrum replacement of centrum, considers the physiology curvature of backbone simultaneously, disposes angle adjustable upper self-stabilizing end cover 3 and lower self-stabilizing end cover 4 at titanium net body both ends, through the implantation of set screw 6, can effectively combine with upper and lower centrum, realizes the immediate stability of postoperative. When the length is unsuitable or meets the transition sections of the neck, the chest and the waist, the relative positions of the fixed body 1 and the adjustable body 2 can be adjusted by the threaded connection of the fixed body 1 and the adjustable body 2, so that the length of the adjustable body is adjusted and the connection of the adjustable body with various diameters is realized, the adjustable body is adjusted to be matched with a patient, and then the adjustable body is fixed.

After the titanium mesh system is implanted, an upper self-stabilizing end cover 3 and a lower self-stabilizing end cover 4 with proper angles are selected according to anatomical features of a patient, and the lower ends of the upper self-stabilizing end cover and the lower self-stabilizing end cover are embedded into the titanium mesh body and are connected with the titanium mesh body in a matched mode.

When the anatomical angle is not optimally matched with the patient, the driving rod 8 can be screwed by threads to move in a certain range of travel in the adjusting groove 54, and the opening size of the adjusting groove 54 can be adjusted according to the different moving distances, so that the end cover body 51 can present different angles. When adjusted to a proper angle, the set screw 6 is inserted into screw hole two 521 at the rear end of the fixed portion 52 for effectively connecting the implanted product with the vertebral body to provide immediate stabilization.

When the angle of the end cover body 51 is not satisfied, the upper self-stabilizing end cover 3 is connected to the upper end of the adjustable body 2 in a universal rotation manner, the lower self-stabilizing end cover 4 is connected to the lower end of the fixed body 1 in a universal rotation manner, and the contact of the arc surfaces forms an eccentric circle design, so that the upper and lower groups of stabilizing end covers can perform universal rotation at different distances on the arc surfaces in the titanium mesh body, and the self-stabilizing end covers have a certain angle adjusting range in the coronal and sagittal positions, so that the self-stabilizing end covers can be also applied to patients with lost physiological curvature, and then are locked by using the fixing screws 6 to complete implantation. Likewise, end caps may be optionally provided at both ends of the titanium mesh system.

According to the invention, according to the clinical actual operation requirement, the titanium mesh with adjustable length and multiple-specification diameter connection is designed, meanwhile, the two ends of the titanium mesh body can be matched with flat or angular self-stabilization end covers, the angles of the end covers can be adjusted in a certain range on the basis of the preset angles, the titanium mesh is suitable for normal or abnormal vertebral bodies needing correction, and the end covers are provided with locking structures, so that the titanium mesh can realize effective combination of products and the vertebral bodies and provide immediate stability.

The titanium mesh system with adjustable length and multi-specification diameter connection can be used, so that the titanium mesh system is not limited to be applied to a specific section, and the problem that the traditional titanium mesh is single in model and can not flexibly select a proper length in operation can be solved. The hole site of adjusting the size also sets up to the hole of getting that holds of this system, effectively reduces the operation loaded down with trivial details nature.

The design of the end cover enables the titanium mesh to be optimally matched with physiological curvature without cutting in operation, and the end cover is designed with two angle adjusting modes in different modes, so that clinical selectivity is further improved.

When the fixing screw 6 is screwed into the screw hole two 521 at the rear end of the fixing part 52, the outer end surface of the fixing screw 6 is positioned in the screw hole two 521, and the zero notch locking structure is formed by combination, so that the zero notch locking structure does not protrude out of the front edge of the vertebral body, and the irritation to surrounding tissues after implantation is greatly reduced.

As a further preferred embodiment, the fixing body 1 is provided with a first ball socket groove 11, the upper end of the lower self-stabilizing end cover 4 is provided with a first ball socket part 41 which is buckled and connected with the first ball socket groove 11, a cross groove 42 is arranged in the first ball socket part 41, the upper end of the adjustable body 2 is provided with a second ball socket groove 21, the lower end of the upper self-stabilizing end cover 3 is provided with a second ball socket part 31 which is buckled and clamped with the second ball socket groove 21, and a cross groove 32 is arranged in the second ball socket part 31.

As shown in fig. 2, the ball socket portion and the ball socket groove are in cross section as the middle part of the sphere. The first ball socket part 41 of the lower self-stabilizing end cover 4 is matched with the first ball socket groove 11 of the fixed body 1, the first ball socket part 41 is pressed into the first ball socket groove 11 through interference fit, the first ball socket part 41 universally rotates in the first ball socket groove 11, and the second ball socket part 31 is pressed into the second ball socket groove 21 through interference fit, and the second ball socket part 31 universally rotates in the second ball socket groove 21; the setting of cross groove makes things convenient for ball socket portion deformation card to go into ball socket groove, improves the smoothness degree of card income.

As a further preferred embodiment, a guiding groove 55 coaxial with the first screw hole 53 is provided in the adjusting groove 54. When the driving rod 8 is screwed into the depth of the adjusting groove 54, the position of the driving rod 8 is limited through the guide groove 55, the driving rod 8 is kept to move horizontally and linearly, meanwhile, the contact area between the end cover body 51 and the driving rod 8 can be increased through the arrangement of the guide groove 55, and further the stability of the angle adjustment of the end face body is guaranteed, so that the driving rod 8 has a good supporting effect on the end cover body 51.

As a further preferred embodiment, the driving rod 8 is provided with a linear groove 81. The position of the driving rod 8 can be quickly adjusted by a common in-line screwdriver through the in-line groove 81.

As a further preferred embodiment, the end cap body 51 is provided with anti-slip teeth 511. The contact area is increased by the anti-slip teeth 511 of the surface, thereby improving the connection strength.

As a further preferred embodiment, a through hole 9 is provided in the middle of the fixing body 1. The bone grafting can be carried out by extending into the fixing body 1 from the through hole 9, and the long-term bone grafting fusion is promoted. And the titanium mesh system after locking can be firmly combined with the vertebral body, so that good stability is provided, the titanium mesh system does not protrude out of the front edge of the vertebral body, irritation to surrounding tissues after implantation is greatly reduced, and the incidence rate of postoperative complications is effectively reduced.

As a further preferred embodiment, the side end of the fixing body 1 is provided with a connecting portion 7, a threaded connecting hole 71 is formed in the middle of the connecting portion 7, a slot 72 is formed in the connecting portion 7, the slot 72 is disposed on two sides of the threaded connecting hole 71, a gear portion 12 is rotatably connected to the fixing body 1, and the inner side of the gear portion 12 is in threaded connection with the adjustable body 2. The connecting part 7 can be matched with the holding device 73 for use, and after the two ends of the holding device 73 are inserted into the two groups of slots 72 for positioning, the rotating rod in the holding device 73 is fixedly connected with the threaded connecting hole 71 through threads, so that the titanium mesh internal fixing system can be conveniently placed. The device threaded rod is matched with a threaded connection hole 71 in the fixed body 1 to be connected through a driving device, a driving gear is arranged on the driving device and meshed with the gear part 12, at the moment, the adjustable body 2 can be driven to rotate forward and backward through clockwise and anticlockwise rotating the gear, so that the length of the adjustable body is adjusted, the connection of multiple standard diameters is realized, the adjustable body is quickly adjusted to be matched with a patient, and then the adjustable body is fixed.

The foregoing describes in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the invention by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.

Claims (9)

1. An adjustable titanium mesh internal fixation system, comprising: the adjustable self-stabilizing end cover comprises a fixing body, an adjustable body, an upper self-stabilizing end cover and a lower self-stabilizing end cover, wherein the adjustable body is in threaded connection with the inside of the fixing body, the upper self-stabilizing end cover is in universal rotation connection with the upper end of the adjustable body, the lower self-stabilizing end cover is in universal rotation connection with the lower end of the fixing body, the upper self-stabilizing end cover and the lower self-stabilizing end cover respectively comprise an end cover body, a fixing part, a fixing screw and a driving rod, an adjusting groove which is formed in the left side of the end cover body in a reducing mode through an opening is formed in the left side of the end cover body, a first screw hole communicated with the adjusting groove is formed in the right side of the end cover body, an inclined guide hole is formed in the right side of the end cover body, a second screw hole communicated with the guide hole is formed in the fixing part in a sliding mode, a third screw hole communicated with the first screw hole is formed in the fixing part, and a third screw hole is in threaded connection with the first screw hole.

2. The adjustable titanium net internal fixation system as claimed in claim 1, wherein the fixing body is provided with a first ball socket groove, the upper end of the lower self-stabilizing end cover is provided with a first ball socket part which is buckled and connected with the first ball socket groove, a cross groove is arranged in the first ball socket part, the upper end of the adjustable body is provided with a second ball socket groove, the lower end of the upper self-stabilizing end cover is provided with a second ball socket part which is buckled and connected with the second ball socket groove, and the second ball socket part is internally provided with a cross groove.

3. The adjustable titanium net internal fixation system according to claim 1, wherein two groups of sliding grooves are symmetrically arranged on the right side of the end cover body, two groups of sliding blocks are symmetrically arranged on the left side of the fixation portion, and the sliding blocks are slidably arranged in the sliding grooves.

4. The adjustable titanium mesh internal fixation system of claim 1, wherein the adjustment slot is provided with a guide slot coaxial with the screw hole.

5. The adjustable titanium mesh internal fixation system of claim 1, wherein the drive rod is provided with a linear groove.

6. The adjustable titanium mesh internal fixation system of claim 1, wherein the fixed body is rotatably connected with a gear portion, and the inner side of the gear portion is in threaded connection with the adjustable body.

7. The adjustable titanium mesh internal fixation system of claim 1, wherein the end cap body is provided with anti-slip teeth.

8. The adjustable titanium mesh internal fixation system of claim 1, wherein a through hole is provided in the middle of the fixation body.

9. The adjustable titanium mesh internal fixation system of claim 1, wherein the side end of the fixation body is provided with a connection part, the middle part of the connection part is provided with a threaded connection hole, the connection part is provided with a slot, and the slot is arranged at two sides of the threaded connection hole.

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