CN215306577U

CN215306577U - Nail rod assembly

Info

Publication number: CN215306577U
Application number: CN202120373703.4U
Authority: CN
Inventors: 刘爽; 姚得志; 李健; 刘斌; 郭宇辰
Original assignee: Beijing Libeier Bio Engineering Institute Co Ltd
Current assignee: Beijing Libeier Bio Engineering Institute Co Ltd
Priority date: 2021-02-10
Filing date: 2021-02-10
Publication date: 2021-12-28
Anticipated expiration: 2031-02-10

Abstract

The utility model provides a nail and bar assembly. The nail stick subassembly includes: the first nail rod comprises a first connecting body and a first screw connected with the first connecting body; the second nail rod comprises a second connecting body and a second screw connected with the second connecting body, the first connecting body is connected with the second connecting body, and the first screw and the second screw are arranged at intervals; the adjusting structure is connected between the first connecting body and the second connecting body and used for adjusting the interval and/or included angle between the first nail rod and the second nail rod. The screw rod assembly can solve the problem that the screw plug is easy to break out in the operation process and prolong the operation time in the prior art.

Description

Nail rod assembly

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a nail rod assembly.

Background

In recent years, with the development of biomechanical research and material science, the application of the internal fixation technology is more and more extensive, and the internal fixation technology is widely applied to surgical treatment of spinal degenerative diseases, spinal tumors, wounds, spinal infection and the like.

The spine internal fixator generally comprises two connecting rods, two ends of each connecting rod are respectively provided with a pedicle screw, the pedicle screws are firstly screwed into the spine to be connected with a human body during operation, then the connecting rods are arranged in U-shaped grooves of pedicle screw seats, and finally screw plugs are screwed into the U-shaped grooves to tightly press the connecting rods.

However, in practical use, the phenomenon that the screw plug is easy to slide and burst out during the operation process is found, the operation time is prolonged, and secondary damage is caused to a patient.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a nail rod assembly to solve the problem that a screw plug is easy to break out in the operation process and prolong the operation time in the prior art.

In order to achieve the above object, the present invention provides a nail bar assembly comprising: the first nail rod comprises a first connecting body and a first screw connected with the first connecting body; the second nail rod comprises a second connecting body and a second screw connected with the second connecting body, the first connecting body is connected with the second connecting body, and the first screw and the second screw are arranged at intervals; the adjusting structure is connected between the first connecting body and the second connecting body and used for adjusting the interval and/or included angle between the first nail rod and the second nail rod.

Further, the adjustment structure includes: the first connecting plate is connected with the first connecting body, and is provided with a long hole which is arranged along the length direction of the first connecting plate; the second connecting plate is connected with the second connecting body, and a connecting hole is formed in the second connecting plate; the connecting piece penetrates through the long hole and the connecting hole to connect the first connecting plate and the second connecting plate; wherein, the connecting piece is movably set up in the slot hole to adjust the interval between first nail stick and the second nail stick, first connecting plate and/or second connecting plate set up around the connecting piece is rotatable, in order to adjust the contained angle between first nail stick and the second nail stick.

Further, first connecting body includes first barrel portion and the first connecting portion of setting on first barrel portion, the external diameter of first connecting portion sets up gradually progressively in the direction of first barrel portion, first connecting body still includes first open slot, first open slot runs through the lateral wall of first barrel portion and extends to first connecting portion along the axial of first connecting body on, first nail stick still includes first retaining member, the one end setting of first screw is in first barrel portion, first retaining member and first connecting portion locking cooperation.

Further, the first connecting body further comprises a first ball socket, the first ball socket is arranged at one end, far away from the first connecting portion, of the first barrel portion, and the first screw comprises a first ball head which is installed in the first ball socket.

Further, the nail rod assembly further comprises a first gasket, and the first gasket is sleeved on the first connecting portion and located between the first barrel portion and the first locking piece.

Further, the connecting piece includes the bolt, and the connecting hole is the screw hole, and the bolt passes the slot hole and with connecting hole lock fit.

Further, the connecting hole is arranged at one end of the second connecting plate far away from the second connecting body.

Furthermore, the connecting piece also comprises a flanging, and the diameter of the flanging is larger than that of the connecting hole, or the diameter of the flanging is larger than the width of the long hole.

Further, the second connector includes second barrel portion and sets up the second connecting portion on the second barrel portion, and the external diameter of second connecting portion sets up gradually progressively in the direction of second barrel portion, and the second connector still includes the second open slot, and the second open slot runs through the lateral wall of second barrel portion and extends to the second connecting portion along the axial of second connector on, and the second nail stick still includes the second retaining member, and the one end setting of second screw is in the second barrel portion, second retaining member and second connecting portion locking fit.

Further, the first nail rod and/or the second nail rod are made of titanium alloy materials.

By applying the technical scheme of the utility model, the first connecting body and the second connecting body can be connected and the interval and the included angle between the first nail rod and the second nail rod can be adjusted due to the arrangement of the adjusting structure, the first nail rod and the second nail rod can be connected without installing the connecting rod, the connecting rod is not required to be fixed by the screw plug, the situations that the screw plug is broken out and the operation time is prolonged due to screw plug sliding in the process of using the screw plug are avoided, secondary damage to a patient in an operation is avoided, and the operation efficiency and the use experience of the patient are improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

FIG. 1 shows a schematic structural view of an embodiment of a nail and bar assembly according to the present invention;

FIG. 2 shows a schematic structural view of the first connection body of FIG. 1;

FIG. 3 shows a schematic structural view of the second connector of FIG. 1;

FIG. 4 shows a top view of the spike assembly of FIG. 1 in a first state;

FIG. 5 shows a top view of the spike assembly of FIG. 1 in a second state; and

FIG. 6 shows a top view of the spike assembly of FIG. 1 in a third state.

Wherein the figures include the following reference numerals:

10. a first nail bar; 11. a first connecting body; 111. a first barrel portion; 112. a first connection portion; 113. a first open slot; 114. a first ball socket; 12. a first screw; 13. a first connecting plate; 14. a long hole; 15. a first locking member; 16. a first gasket; 20. a second nail bar; 21. a second connector; 211. a second barrel portion; 212. a second connecting portion; 213. a second open slot; 214. a second ball socket; 22. a second screw; 23. a second connecting plate; 24. connecting holes; 25. a second locking member; 26. a second gasket; 30. a connecting member.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

As shown in FIG. 1, the present embodiment provides a nail bar assembly comprising a first nail bar 10, a second nail bar 20 and an adjustment structure. The first nail rod 10 comprises a first connecting body 11 and a first screw 12 connected with the first connecting body 11; the second nail rod 20 comprises a second connecting body 21 and a second screw 22 connected with the second connecting body 21, the first connecting body 11 is connected with the second connecting body 21, and the first screw 12 and the second screw 22 are arranged at intervals; the adjusting structure is connected between the first connecting body 11 and the second connecting body 21, and the adjusting structure adjusts the interval and the included angle between the first nail rod 10 and the second nail rod 20.

In this embodiment, owing to set up the regulation structure, thereby can couple together first connector 11 and second connector 21 and adjust interval and contained angle between first nail stick 10 and the second nail stick 20, the installation that need not the connective bar can realize the connection between first nail stick 10 and the second nail stick 20, also need not the plug screw to fix the connective bar, and then the in-process that has avoided using the plug screw collapses out because of the plug screw that the plug screw slides the silk leads to, the condition of extension operating time takes place, can not lead to the fact the secondary injury to the patient in the operation, the operation efficiency and patient's use experience have been improved.

As shown in fig. 2 and 3, in the present embodiment, the adjustment structure includes the first connection plate 13, the second connection plate 23, and the connection member 30. The first connecting plate 13 is connected with the first connecting body 11, a long hole 14 is formed in the first connecting plate 13, and the long hole 14 is formed along the length direction of the first connecting plate 13; the second connecting plate 23 is connected with the second connecting body 21, and a connecting hole 24 is formed in the second connecting plate 23; the connecting piece 30 is arranged in the long hole 14 and the connecting hole 24 in a penetrating way to connect the first connecting plate 13 and the second connecting plate 23; wherein the connecting member 30 is movably disposed in the elongated hole 14 to adjust the interval between the first nail bar 10 and the second nail bar 20, and the first connecting plate 13 and the second connecting plate 23 are rotatably disposed around the connecting member 30 to adjust the angle between the first nail bar 10 and the second nail bar 20.

Specifically, the first link plate 13 is positioned above the second link plate 23, and the link 30 passes through the elongated hole 14 and the link hole 24 in order to connect the first link plate 13 and the second link plate 23. When the connecting member 30 is inserted into the elongated hole 14 and the connecting hole 24, the connecting member 30 is movably disposed in the elongated hole 14 to adjust the interval between the first nail bar 10 and the second nail bar 20, and the first connecting plate 13 and the second connecting plate 23 are rotatable about the connecting member 30 to adjust the included angle between the first nail bar 10 and the second nail bar 20. Fig. 4 shows the state of the first link plate 13 and the second link plate 23 when the distance between the first nail bar 10 and the second nail bar 20 is the largest, fig. 5 shows the state of the first link plate 13 and the second link plate 23 when the distance between the first nail bar 10 and the second nail bar 20 is the smallest, and fig. 6 shows the state of the first link plate 13 and the second link plate 23 after the angle between the first nail bar 10 and the second nail bar 20 is changed.

The arrangement structure is simple, and the adjustment of the interval and the included angle between the first nail rod 10 and the second nail rod 20 is convenient.

As shown in fig. 2, in the present embodiment, the first connecting body 11 includes a first barrel portion 111 and a first connecting portion 112 disposed on the first barrel portion 111, an outer diameter of the first connecting portion 112 is gradually increased toward the first barrel portion 111, the first connecting body 11 further includes a first opening groove 113, the first opening groove 113 penetrates through a side wall of the first barrel portion 111 in an axial direction of the first connecting body 11 and extends to the first connecting portion 112, the first nail rod 10 further includes a first locking member 15, one end of the first screw 12 is disposed in the first barrel portion 111, and the first locking member 15 is in locking fit with the first connecting portion 112.

Likewise, as shown in fig. 3, in the present embodiment, the second connection body 21 includes a second barrel 211 and a second connection portion 212 provided on the second barrel 211, an outer diameter of the second connection portion 212 is gradually increased toward the second barrel 211, the second connection body 21 further includes a second open slot 213, the second open slot 213 penetrates through a sidewall of the second barrel 211 in an axial direction of the second connection body 21 and extends to the second connection portion 212, the second nail rod 20 further includes a second locking member 25, one end of the second screw 22 is provided in the second barrel 211, and the second locking member 25 is in locking fit with the second connection portion 212.

In the present embodiment, since the outer diameter of the first connecting portion 112 is gradually increased toward the first barrel portion 111, and the first opening groove 113 is provided on the first connecting portion 112 and the first barrel portion 111, when the first fastening member 15 is screwed to the first connecting portion 112, the first connecting portion 112 is pressed to make the first barrel portion 111 clamp one end of the first screw 12, so as to ensure the connection strength between the first connecting body 11 and the first screw 12.

The second connecting body 21 has the same structure and connection manner as the first connecting body 11, and is not described herein again.

As shown in fig. 2, in the present embodiment, the first connecting body 11 further includes a first ball socket 114, the first ball socket 114 is disposed at an end of the first cylindrical portion 111 away from the first connecting portion 112, and the first screw 12 includes a first ball head, and the first ball head is mounted in the first ball socket 114.

Through the arrangement, the first connecting body 11 and the first screw 12 are in spherical contact, so that the first connecting body 11 and the first screw 12 are connected tightly, and friction is small when relative movement occurs.

As shown in fig. 3, in the present embodiment, the second connecting body 21 further includes a second ball socket 214, the second ball socket 214 is disposed at an end of the second cylindrical body 211 away from the second connecting portion 212, and the second screw 22 includes a second ball head, and the second ball head is mounted in the second ball socket 214.

As shown in FIG. 1, in this embodiment, the nail bar assembly further comprises a first washer 16, the first washer 16 being fitted over the first coupling portion 112 and between the first barrel portion 111 and the first locking member 15.

The above arrangement makes the friction between the first barrel portion 111 and the first lock member 15 small.

Of course, the nail bar assembly further comprises a second spacer 26, and the second spacer 26 is sleeved on the second connecting part 212 and is positioned between the second cylinder part 211 and the second locking member 25.

In this embodiment, as shown in fig. 1, the connecting member 30 includes a bolt, the connecting hole 24 is a threaded hole, and the bolt passes through the elongated hole 14 and is locked to the connecting hole 24.

The arrangement realizes the connection between the connecting piece 30 and the connecting hole 24, does not influence the movement of the connecting piece 30 in the long hole 14 to change the interval between the first nail rod 10 and the second nail rod 20, and has better connecting strength.

Preferably, as shown in fig. 1 and 3, in the present embodiment, the connection hole 24 is provided at an end of the second connection plate 23 away from the second connection body 21.

The above arrangement facilitates the adjustment of the interval between the first nail bar 10 and the second nail bar 20, and the second link plate 23 does not interfere with the first link body 11 when the interval between the first nail bar 10 and the second nail bar 20 is narrowed.

Further, the connecting member 30 further includes a flange having a diameter larger than that of the connecting hole 24.

Specifically, wear to establish back in connecting hole 24 and slot hole 14 with connecting piece 30 from top to bottom, carry out the turn-ups to the one end of wearing out connecting hole 24 of connecting piece 30 and handle, turn-ups's diameter is greater than the diameter of connecting hole 24, in order to prevent that second connecting plate 23 from deviating from on by connecting piece 30, thereby realize the first connection of first connecting plate 13 and second connecting plate 23, at this moment, first connecting plate 13 and second connecting plate 23 relative movement and relative rotation, in order to change interval and contained angle between first nail stick 10 and the second nail stick 20, make the nail stick subassembly can satisfy the affected part needs, tighten the nut of connecting piece 30 again, make the structure of nail stick subassembly fixed, can not take place to remove or misplace in the patient.

Of course, the connecting member 30 may also pass through the connecting hole 24 and the long hole 14 from bottom to top, and the end of the connecting member that passes through the long hole 14 is flanged, and the diameter of the flange is larger than the width of the long hole 14, so as to prevent the first connecting plate 13 from being separated from the connecting member 30.

Preferably, the first nail bar 10 and the second nail bar 20 are made of titanium alloy material.

The titanium alloy material has been used clinically for many years, has good biocompatibility and can meet the requirement of operation.

The technical scheme of the utility model is realized by the following modes:

in assembling, the first connecting plate 13 and the second connecting plate 23 are connected by the connecting member 30, the lower end of the connecting member 30 is flanged after the connection to prevent the first connecting plate 13 and the second connecting plate 23 from being separated, the first spacer 16 and the first locking member 15 are respectively mounted on the first barrel portion 111, and the second spacer 26 and the second locking member 25 are mounted on the second barrel portion 211. After the assembly is completed, the length and the angle between the first connecting plate 13 and the second connecting plate 23 can be adjusted to adapt to different patients.

In the operation process, the first screw 12 and the second screw 22 are implanted into the human body, then the first ball head is pressed into the first ball socket 114, the second ball head is pressed into the second ball socket 214, the length and the included angle between the first connecting plate 13 and the second connecting plate 23 are adjusted until the required position is reached, the first locking member 15 is screwed downwards, the first locking member 15 presses the first gasket 16 to move downwards, in the moving process, the opening of the first open slot 113 can be continuously shrunk, the first screw 12 is clasped, correspondingly, the second locking member 25 is screwed, the second locking member 25 presses the second gasket 26 to move downwards, the opening of the second open slot 213 can be continuously shrunk, the second screw 22 is clasped, and finally the connecting member 30 is screwed, so that the first connecting plate 13 and the second connecting plate 23 are locked.

The nail rod assembly has the following advantages: the connecting rod and the screw seat are combined into one, so that the operation process is simplified, the operation time is saved, the problems of screw plug slipping and collapse of the traditional pedicle screws are solved, the relative position between the connecting rods can be adjusted in multiple directions in the operation process, different anatomical structures are suitable, and the locking effect can be achieved by screwing down the nuts of the connecting pieces after the connecting rods are installed in place.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:

owing to set up the regulation structure, thereby can couple together first connector and second connector and adjust interval and contained angle between first nail stick and the second nail stick, the installation that need not the connective bar can realize being connected between first nail stick and the second nail stick, also need not the plug screw to fix the connective bar, and then the in-process of having avoided using the plug screw collapses out because of the plug screw that the plug screw slides the silk and leads to, the condition of extension operation time takes place, can not lead to the fact the secondary injury to the patient in the operation, operation efficiency and patient's use experience has been improved.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A nail bar assembly, comprising:

a first nail bar (10) comprising a first connecting body (11) and a first screw (12) connected with the first connecting body (11);

the second nail rod (20) comprises a second connecting body (21) and a second screw (22) connected with the second connecting body (21), the first connecting body (11) is connected with the second connecting body (21), and the first screw (12) and the second screw (22) are arranged at intervals;

the adjusting structure is connected between the first connecting body (11) and the second connecting body (21), and the adjusting structure adjusts the interval and/or included angle between the first nail rod (10) and the second nail rod (20).

2. The nail and bar assembly of claim 1 wherein said adjustment structure comprises:

the first connecting plate (13) is connected with the first connecting body (11), a long hole (14) is formed in the first connecting plate (13), and the long hole (14) is formed in the length direction of the first connecting plate (13);

the second connecting plate (23) is connected with the second connecting body (21), and a connecting hole (24) is formed in the second connecting plate (23);

the connecting piece (30) is arranged in the long hole (14) and the connecting hole (24) in a penetrating mode so as to connect the first connecting plate (13) and the second connecting plate (23);

wherein the connecting piece (30) is movably arranged in the long hole (14) to adjust the interval between the first nail rod (10) and the second nail rod (20), and the first connecting plate (13) and/or the second connecting plate (23) are/is rotatably arranged around the connecting piece (30) to adjust the included angle between the first nail rod (10) and the second nail rod (20).

3. The nail and bar assembly according to claim 1, wherein the first connecting body (11) comprises a first barrel portion (111) and a first connecting portion (112) provided on the first barrel portion (111), the outer diameter of the first connecting portion (112) is arranged gradually increasing in the direction toward the first barrel portion (111), the first connecting body (11) further comprises a first opening groove (113), the first opening groove (113) penetrates through the side wall of the first barrel part (111) along the axial direction of the first connecting body (11) and extends to the first connecting part (112), the first nail bar (10) further comprises a first locking member (15), one end of the first screw (12) is arranged in the first barrel part (111), the first locking member (15) is in locking engagement with the first connecting portion (112).

4. A nail and rod assembly according to claim 3, characterized in that said first connection body (11) further comprises a first ball and socket (114), said first ball and socket (114) being provided on said first cylindrical portion (111) at an end remote from said first connection portion (112), said first screw (12) comprising a first ball head, said first ball head being mounted in said first ball and socket (114).

5. A nail rod assembly according to claim 3, further comprising a first washer (16), said first washer (16) being fitted over said first connection portion (112) and between said first barrel portion (111) and said first locking member (15).

6. A nail and bar assembly according to claim 2, wherein the attachment means (30) comprises a threaded bolt and the attachment aperture (24) is a threaded aperture, the bolt passing through the slot (14) and being in locking engagement with the attachment aperture (24).

7. A nail and rod assembly according to claim 2, characterized in that the connection hole (24) is arranged at the end of the second connection plate (23) remote from the second connection body (21).

8. The nail and bar assembly according to claim 2, characterized in that the connecting piece (30) further comprises a flange, the diameter of the flange is larger than the diameter of the connecting hole (24), or the diameter of the flange is larger than the width of the long hole (14).

9. The nail bar assembly according to claim 1, wherein the second connecting body (21) comprises a second barrel portion (211) and a second connecting portion (212) provided on the second barrel portion (211), the second connecting portion (212) has an outer diameter gradually increasing toward the second cylindrical portion (211), the second connecting body (21) further comprises a second open slot (213), the second open slot (213) penetrates through the sidewall of the second barrel part (211) along the axial direction of the second connecting body (21) and extends to the second connecting part (212), the second nail bar (20) also comprises a second locking piece (25), one end of the second screw (22) is arranged in the second barrel part (211), the second locking piece (25) is in locking fit with the second connecting part (212).

10. A nail and rod assembly according to claim 1, characterized in that the first nail and/or the second nail and rod (10, 20) are made of a titanium alloy material.