CN211674504U - Locking steel plate and locking steel plate assembly - Google Patents

Abstract

The utility model discloses a locking steel sheet and locking steel sheet subassembly, including main steel sheet and fixed sleeve, the joint groove has been seted up to the outer wall symmetry at the adjacent both sides edge of main steel sheet, the equal fixed mounting in lateral wall in four joint grooves has the fixed column, the movable block has been cup jointed in the outer wall activity of fixed column, the outer wall activity of movable block has cup jointed the return spring, the end mounting of return spring is on the lateral wall of main steel sheet, other end fixed mounting is on the lateral wall of movable block, the spacing groove has been seted up on the lateral wall that the movable block is close to main steel sheet, equal fixed mounting has the stopper on the lateral wall all around of main steel sheet, four stoppers are located four spacing inslots respectively, fixed sleeve's outer wall fixed. The utility model provides a pair of locking steel sheet and locking steel sheet subassembly can reduce self-tapping screw's torsional forces, makes things convenient for the doctor to twist and moves self-tapping screw, makes things convenient for the drill bit to punch, improves the fixed stability of locking steel sheet and easy operation, saves time.

Description

Locking steel plate and locking steel plate assembly

Technical Field

The utility model relates to a medical steel sheet subassembly technical field relates to a locking steel sheet and locking steel sheet subassembly particularly.

Background

The technology of the steel plate component is developed rapidly, the main fixing mode of the fracture is to adopt the steel plate and the steel plate component to treat the fracture, the locking steel plate is a fracture fixing device with screw fixation, after the screws with screw heads are screwed in the holes, the steel plate becomes a screw angle fixing device which can be provided with locking holes and non-locking holes simultaneously for putting the screws in different ways, the fixation of the steel plate is mainly fixed by the screws, the locking steel plate cervical vertebra fusion technique is suitable for the situations of centrum excision of a cervical vertebra dislocation machine and the like at present, and can support and fix bone grafting blocks, in the cervical vertebra fusion steel plate with four holes at present, inclined grooves are arranged in two holes, the screws arranged in the two holes need to keep an inclined angle of 10-13 degrees with a vertical surface, thus the fixation of the screws is more stable, and in the fixing nails used in the cervical vertebra fusion steel plate, two kinds of fixing screws, namely a tapping screw and a fixed expansion screw are respectively arranged, and the two kinds of screws are matched to ensure that the steel plate is fixed more stably.

When the locking steel plate cervical vertebra fusion technique is applied, self-tapping screws are required to be used for fixing in fixing holes of a steel plate, but when the existing cervical vertebra steel plate is in actual use, because the positions of four fixing holes of the steel plate are fixed, when the steel plate is fixed, the difficulty of screwing the self-tapping screws in the fixing holes by a doctor is increased, the self-tapping screws and the locking screws are difficult to screw, so that the top of a nut of the self-tapping screws protrudes out of the upper surface of the steel plate, cervical vertebra soft tissue is damaged when the top of the nut of the self-tapping screws protrudes out of the upper surface of the steel plate, when the steel plate fusion is carried out, temporary fixing screws are firstly installed in two parallel fixing holes, then two holes with oblique grooves are pre-tapped in addition, then the self-tapping screws are screwed, the existing pre-tapping method is to insert sleeve heads of self-holding sleeves into the fixing holes, then stretch into self-sustaining formula sleeve with the drill bit again and punch, this kind of self-sustaining formula sleeve is when using, and length is longer, and difficult operation is difficult for holding inclination to can influence the angle that the drill bit punched.

Solves the technical problem

In view of the above-mentioned problems in the prior art, an aspect of the present invention is to provide a locking steel plate and a locking steel plate assembly, which solves the above-mentioned problems in the background.

SUMMERY OF THE UTILITY MODEL

In order to achieve the above object, the utility model provides a pair of locking steel sheet and locking steel sheet subassembly includes:

the main steel plate is provided with clamping grooves symmetrically formed in the outer walls of the edges of two adjacent sides of the main steel plate, the number of the clamping grooves is four, fixed columns are fixedly mounted on the side walls of the four clamping grooves, movable blocks are movably sleeved on the outer walls of the fixed columns, return springs are movably sleeved on the outer walls of the movable blocks, the ends of the return springs are fixedly mounted on the side walls of the main steel plate, the other ends of the return springs are fixedly mounted on the side walls of the movable blocks, the movable blocks and the main steel plate keep the same arc line under the action of torque force of the return springs, limiting grooves are formed in the side walls, close to the main steel plate, of the four movable blocks, limiting blocks are fixedly mounted on the side walls around the main steel plate, and the four limiting blocks are located in the four limiting grooves;

the fixing sleeve is characterized in that an inclined block is fixedly mounted on the outer wall of the fixing sleeve, a concave surface formed at the bottom of the inclined block is matched with a convex surface formed at the top of the movable block, a through groove which completely runs through is formed in the middle shaft of the top of the fixing sleeve, a clamping block is fixedly mounted at the bottom of the inclined block of the fixing sleeve, and the clamping block and the fixing sleeve are coaxial.

Preferably, a positioning hole is formed in the middle shaft of the top of the main steel plate.

Preferably, the top of two of the movable blocks is provided with a first through hole which is completely penetrated, the top of the other two of the movable blocks is provided with a second through hole which is completely penetrated, the inner walls of the two first through holes are both provided with inclined grooves, the device is fixed mainly by using a self-tapping screw and a fixing screw, the inclined grooves in the two holes and the inclined grooves in the first through holes form an angle of 10-13 degrees with a vertical surface, and thus the self-tapping screw and the fixing screw can be fixed more stably.

Preferably, self-tapping screws are arranged in the first through hole and the second through hole, fixing screws are connected with the inner threads of grooves in the tops of the self-tapping screws, and the self-tapping screws and the fixing screws are made of titanium alloy integrally.

Preferably, the main steel plate, the movable block, the return spring and the limiting block are all made of titanium alloy in a whole.

Advantageous effects

Compared with the prior art, the utility model provides a pair of locking steel sheet and locking steel sheet subassembly possesses following beneficial effect:

1. the utility model discloses a, through install the movable block that can move about around at main steel sheet one, then install the return spring between movable block and main steel sheet and movable block, make four movable blocks have ascending elasticity, then the stopper on utilizing main steel sheet limits the position of movable block, thereby when installing self-tapping screw, can change the angle of movable block, thereby can reduce self-tapping screw's torsional force, make things convenient for the doctor to twist self-tapping screw, greatly reduced the outstanding steel sheet upper surface in top's the condition of self-tapping screw nut.

2. The utility model discloses a, through setting up the fixed sleeve, then set up the convex surface assorted tapered block that forms with the movable block top on the fixed sleeve, when needs carry out tapping in advance to two first through-holes, at first utilize interim staple to fix the second through-hole in advance, then block card on the fixed sleeve in first through-hole, then make the concave surface of the tapered block bottom that sets up on the fixed sleeve identical with the convex surface that the movable block top formed, the inclined plane of tapered block is parallel with the tapered groove in the first through-hole, then punch the drill bit and punch to the cervical vertebra face on passing the fixed sleeve again, thereby confirm the inclination of punching easily, make things convenient for the drill bit to punch, and easy operation, save time.

3. The utility model discloses a fixed sleeve among, simple structure helps the tapping in advance of cervical vertebra in the first through-hole, makes things convenient for self-tapping screw and set screw's installation, wholly improves the fixed stability of locking steel sheet.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

This document provides an overview of various implementations or examples of the technology described in this disclosure, and is not a comprehensive disclosure of the full scope or all features of the disclosed technology.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure at the position A of the present invention;

FIG. 3 is a schematic view of another perspective structure of the present invention;

FIG. 4 is a schematic view of the structure at the position B of the present invention;

FIG. 5 is a schematic side view of the present invention;

FIG. 6 is a schematic view of the sleeve structure of the present invention;

fig. 7 is a schematic view of the movable block structure of the present invention.

The main reference numbers:

1. a main steel plate; 2. a movable block; 3. a self-tapping screw; 4. a set screw; 5. positioning holes; 6. a limiting groove; 7. a return spring; 8. a limiting block; 9. a first through hole; 10. fixing a column; 11. a second through hole; 12. a tapered block; 13. fixing the sleeve; 14. a concave surface; 15, clamping blocks; 16 convex surfaces; 17. an inclined groove; 18. a clamping groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described below clearly and completely with reference to the accompanying drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.

Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of the word "comprising" or "comprises", and the like, in this disclosure is intended to mean that the elements or items listed before that word, include the elements or items listed after that word, and their equivalents, without excluding other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

To maintain the following description of the embodiments of the present disclosure clear and concise, a detailed description of known functions and known components have been omitted from the present disclosure.

Referring to fig. 1-7, a locking steel plate and a locking steel plate assembly, wherein movable blocks 2 are installed around a main steel plate 1, and a return spring 7 is installed between the movable blocks 2 and the main steel plate 1 and the movable blocks 2 to make four movable blocks 2 have upward elastic force, and then the position of the movable blocks 2 is limited by a limit block 8 on the main steel plate 1, so that the angle of the movable blocks 2 can be changed when a tapping screw 3 is installed, thereby reducing the torque force of the tapping screw 3, facilitating a doctor to screw the tapping screw 3, greatly reducing the protrusion of the top of the nut of the tapping screw 3 from the upper surface of the steel plate, by arranging a fixed sleeve 13 and then arranging an inclined block 12 on the fixed sleeve 13, which is matched with the convex surface formed on the top of the movable blocks 2, when two first through holes 9 need to be pre-tapped, firstly, the temporary fixing nail is used to fix the second through hole 11 in advance, then the fixture block 15 on the fixing sleeve 13 is clamped in the first through hole 9, then the concave surface 14 at the bottom of the inclined block 12 arranged on the fixing sleeve 13 is matched with the convex surface 16 formed at the top of the movable block 2, the fixing sleeve 13 is inclined, the fixture block 15 is also inclined in the first through hole 9, because the length of the fixture block 15 is between 1 and 1.5mm, the concave surface 14 at the bottom of the inclined block 12 is not influenced to be matched with the convex surface 16 formed at the top of the movable block 2, at the moment, the inclined plane of the inclined block 12 is parallel to the inclined groove 17 in the first through hole 9, then the punching drill bit passes through the fixing sleeve 13 to punch the cervical vertebra surface, thereby the punching inclination is easy to determine, the operation is simple, the time is saved, the fixing sleeve 13 in the utility model has a simple structure, and is helpful to pre-tapping the, the installation of the self-tapping screw 3 and the fixing screw 4 is convenient, and the stability of the fixation of the locking steel plate is integrally improved.

The utility model discloses among the further technical scheme that provides, joint groove 18 has been seted up to the outer wall symmetry at the adjacent both sides edge of main steel sheet 1, the quantity in joint groove 18 is four, the equal fixed mounting of lateral wall in four joint grooves 18 has fixed column 10, movable block 2 has been cup jointed in the outer wall activity of fixed column 10, return spring 7 has been cup jointed in the outer wall activity of movable block 2, return spring 7's one end fixed mounting is on main steel sheet 1's lateral wall, other end fixed mounting is on movable block 2's lateral wall, the convex surface 16 at movable block 2 top keeps same pitch arc with the curved surface that main steel sheet 1 top formed under return spring 7's the torsional force effect, four movable blocks 2 have been seted up spacing groove 6 on being close to main steel sheet 1's the lateral wall, equal fixed mounting has the stopper 8 of aiming at spacing groove 6 on main steel sheet 1 lateral wall all around, four stopper 8 are located four.

Normally, the outer wall fixed mounting of fixed sleeve 13 has oblique piece 12, the concave surface 14 that the bottom of oblique piece 12 formed matches with the convex surface 16 that the top of movable block 2 formed, fixed sleeve 13 top axis department sets up the logical groove that thoroughly runs through, the bottom fixed mounting of fixed sleeve 13 oblique piece 12 has fixture block 15, fixture block 15 lays with the fixed sleeve 13 is coaxial, the length of fixture block 15 is at 1-1.5mm, and fixture block 15 is less than the diameter of oblique piece 12, the length of fixture block 15 sets up to 1-1.5mm, help in the fixture block card goes into first through-hole 9, and can not influence the concave surface 14 of oblique piece 12 bottom and the convex surface 16 that the top of movable block 2 formed identical.

Furthermore, referring to fig. 1, as a preferred, the positioning hole 5 is opened at the middle axis of the top of the main steel plate 1, and the positioning hole 5 is provided at the device which is convenient to take, and the self-supporting sleeve is utilized to take.

The utility model discloses among the further technical scheme that provides, wherein the first through-hole 9 that thoroughly runs through is seted up at the top of two movable blocks 2, the second through-hole 11 that thoroughly runs through is seted up at the top of two other movable blocks 2, the skewed slot 17 has all been seted up to the inner wall of two first through-holes 9, the fixed of device mainly utilizes self-tapping screw 3 and set screw 4 to fix it, wherein two downthehole skewed slots, skewed slot 17 in the first through-hole 9 forms 10-13 the angle with vertical face, can make self-tapping screw 3 and set screw 4 fixed more stable like this.

As further shown in fig. 5, it can be seen that in some embodiments, preferably, the tapping screws 3 are disposed in the first through holes 9 and the second through holes 11, the fixing screws 4 are connected to the grooves on the tops of the tapping screws 3 through internal threads, the tapping screws 3 and the fixing screws 4 are made of titanium alloy, the titanium alloy material has good biocompatibility, can promote the formation of callus, has high fatigue resistance, light weight, low elastic modulus, therefore, the titanium alloy locking plate is an ideal orthopedic implant material, can bear larger stress without fracture by adopting a hot press molding process, has higher anti-fatigue capability, has higher safety factor and treatment effect clinically, the titanium alloy plate has the elastic deformation capacity similar to that of a pure titanium plate, in clinical use, the ointment promotes callus formation, reduces stress shielding effect and is beneficial to fracture healing and recovery.

The utility model discloses an install movable block 2 around main steel sheet 1 one, then install back of the body spring 7 between movable block 2 and main steel sheet 1 and movable block 2, make four movable blocks 2 have ascending elasticity, then utilize stopper 8 on main steel sheet 1 to limit the position of movable block 2, thus when installing self-tapping screw 3, can change the angle of movable block 2, thus can reduce the moment of torsion of self-tapping screw 3, it is convenient for the doctor to twist self-tapping screw 3, greatly reduced the top of self-tapping screw 3 nut to stick out the condition on the steel sheet upper surface, through setting up fixed sleeve 13, then set up the sloping block 12 that matches with the convex surface that forms at the top of movable block 2 on fixed sleeve 13, when needing to carry out tapping in advance to two first through-holes 9, at first utilize interim staple to fix second through-hole 11 in advance, then the fixture block 15 on the fixed sleeve 13 is clamped in the first through hole 9, then the concave surface 14 at the bottom of the inclined block 12 arranged on the fixed sleeve 13 is matched with the convex surface 16 formed at the top of the movable block 2, the fixed sleeve 13 is inclined, the fixture block 15 is also inclined in the first through hole 9, because the length of the fixture block 15 is between 1-1.5mm, the concave surface 14 at the bottom of the inclined block 12 is not influenced to be matched with the convex surface 16 formed at the top of the movable block 2, at the moment, the inclined plane of the inclined block 12 is parallel to the inclined groove 17 in the first through hole 9, and then the punching drill passes through the fixed sleeve 13 to punch the cervical vertebra surface, thereby easily determining the punching inclination, and having simple operation and time saving, the fixed sleeve 13 in the utility model has simple structure, is beneficial to the pre-tapping of the cervical vertebra in the first through hole 9, and is convenient for the installation of the self-, the stability of locking steel plate fixation is integrally improved.

Furthermore, in the present invention, the main steel plate 1, the movable block 2, the return spring 7, and the stopper 8 are integrally made of titanium alloy.

It will be appreciated by those skilled in the art that other similar connecting means, such as welding, bonding or screwing, may also be used to implement the present invention.

In the utility model, the elastic coefficient of the return spring 7 is within the range of meeting the corresponding technical requirements in the specific implementation process; specifically, the return spring 7 is a torsion spring.

The above embodiments are merely exemplary embodiments of the present invention, which is not intended to limit the present invention, and the scope of the present invention is defined by the appended claims. Various modifications and equivalents may be made by those skilled in the art to the present invention without departing from the spirit and scope of the invention, and such modifications and equivalents should be considered to be within the scope of the invention.

Claims (4)

1. A locking steel plate and locking steel plate assembly, comprising:

the main steel plate (1), the outer walls of the two adjacent side edges of the main steel plate (1) are symmetrically provided with clamping grooves (18), the number of the clamping grooves (18) is four, the side walls of the four clamping grooves (18) are fixedly provided with fixed columns (10), each fixed column (10) is movably sleeved with a movable block (2), the fixed columns (10) are movably sleeved with return springs (7), one ends of the return springs (7) are fixedly arranged on the side walls of the main steel plate (1), the other ends of the return springs (7) are fixedly arranged on the side walls of the movable blocks (2), the movable blocks (2) keep the same arc line with the main steel plate (1) under the torque force action of the return springs (7), and the four movable blocks (2) are close to the side walls of the main steel plate (1) and are provided with limit grooves (6), limiting blocks (8) corresponding to the limiting grooves (6) are fixedly arranged on the side walls of the periphery of the main steel plate (1), and the four limiting blocks (8) are respectively positioned in the corresponding limiting grooves (6);

the outer wall of the fixed sleeve (13) is fixedly provided with an inclined block (12), a concave surface (14) formed at the bottom of the inclined block (12) is matched with a convex surface (16) formed at the top of the movable block (2), a through groove which penetrates up and down is formed in the middle shaft at the top of the fixed sleeve (13), a clamping block (15) is fixedly arranged at the bottom of the fixed sleeve (13) corresponding to the inclined block (12), and the clamping block (15) and the fixed sleeve (13) are coaxial;

the top of the movable block (2) is provided with a first through hole (9) which completely penetrates through the movable block, the top of the movable block (2) is provided with a second through hole (11) which completely penetrates through the movable block, the inner wall of the first through hole (9) is provided with an inclined groove (17), and the clamping block (15) is clamped in the first through hole (9).

2. The locking steel plate and locking steel plate assembly as claimed in claim 1, wherein the central axis of the top of the main steel plate (1) is provided with a positioning hole (5).

3. A locking steel plate and locking steel plate assembly according to claim 1, wherein the first through hole (9) and the second through hole (11) are provided with self-tapping screws (3), the top of the self-tapping screws (3) is provided with fixing screws (4) in the groove, and the self-tapping screws (3) and the fixing screws (4) are made of titanium alloy integrally.

4. The locking plate and locking plate assembly of claim 1 wherein the main plate (1), the movable block (2), the return spring (7), and the stop block (8) are made of titanium alloy.

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