CN219720832U - Thoracolumbar vertebral pedicle system - Google Patents

Abstract

The utility model provides a thoracolumbar vertebral pedicle system, which relates to the technical field of medical appliances, is arranged on thoracolumbar and comprises vertebral pedicle nails and connecting rods, and comprises: the connecting assembly is provided with connecting rods, and a plurality of connecting rods penetrate through the proximal ends of the pedicle screws and are connected with the thoracolumbar vertebrae and the connecting rods so as to fix the positions of the proximal ends of the pedicle screws; the bone cement assembly comprises a pouring component and bone cement, wherein a pouring hole is formed at the far end of the pedicle screw corresponding to the pouring component, and the bone cement is poured into the thoracolumbar vertebra through the pouring component and the pouring hole to fix the position of the far end of the pedicle screw; the propelling component comprises an adapter and a propeller, the propeller is provided with a bone cement cylinder and a propelling pipeline which are communicated, the propelling pipeline connects the connecting rod with the thoracolumbar vertebra through the adapter, and the bone cement cylinder is used for pouring bone cement into the thoracolumbar vertebra through the adapter; can effectively treat osteoporosis patients by using the thoracolumbar pedicle system.

Description

Thoracolumbar vertebral pedicle system

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a thoracolumbar pedicle system.

Background

At present, when treating spinal diseases clinically, an internal fixing device is usually installed in the posterior of the spine fracture, and the existing internal fixing device mainly consists of pedicle screws and connecting rods, for example, chinese patent publication No. CN105708535A discloses a thoracolumbar fracture posterior minimally invasive nail rod system which comprises pedicle nails, wherein long tail hollow nails are arranged, the distal ends of the hollow nails are provided with spongy bone threads, the proximal ends of the hollow nails are provided with cortical bone threads, the tail of the hollow nails are provided with U-shaped nails, and the distal ends of the tail of the hollow nails are provided with long tails; the outer side of the joint of the nail tail and the long tail is provided with a nail tail self-breaking mark, and the outer side of the long tail is provided with a long tail plane; trapezoidal threads are arranged on the inner sides of the nail tail and the long tail, and square angle grooves are formed in the trapezoidal threads; the outer side of the nail cap is provided with an upper flat trapezoid convex thread, the middle of the nail cap is provided with a plum blossom groove, the plum blossom groove is provided with a reverse concave thread, and the near end of the nail cap is provided with a U-shaped clamping block; the nail cap is embedded with the U-shaped clamping block; the connecting rod is a T-shaped rod, the far end of the T-shaped rod is a main rod, and the near end of the T-shaped rod is provided with a T-shaped handle; the tail end of the main rod is provided with a conical tip, and the near end is provided with a locating piece; the T-shaped handle is provided with an arc-shaped arm; the joint of the main rod and the arc-shaped arm is provided with a connecting rod self-breaking mark.

The nail rod system can realize fixation of the spine fracture posterior to a certain extent, but can not adapt to loose bones and further can not realize effective fixation when treating osteoporosis patients, so that the treatment effect is influenced, and the structure of the thoracolumbar vertebral pedicle system is still to be further perfected.

Disclosure of Invention

The utility model aims to provide a thoracolumbar vertebral pedicle system, which solves the problem of spine fracture posterior fixation treatment by using the thoracolumbar vertebral pedicle system for a patient with osteoporosis.

The embodiment of the utility model is realized by the following technical scheme: the thoracolumbar vertebral pedicle system is arranged on the thoracolumbar and comprises vertebral pedicle nails and connecting rods, wherein the connecting rods penetrate through the proximal ends of the vertebral pedicle nails and are connected with the thoracolumbar vertebrae and the connecting rods to fix the positions of the proximal ends of the vertebral pedicle nails; the bone cement assembly comprises a pouring component and bone cement, wherein a pouring hole is formed at the far end of the pedicle screw corresponding to the pouring component, and the bone cement is poured into the thoracolumbar vertebra through the pouring component and the pouring hole to fix the position of the far end of the pedicle screw; the propelling component comprises an adapter and a propeller, the propeller is provided with a bone cement cylinder and a propelling pipeline which are communicated, the propelling pipeline connects the connecting rod with the thoracolumbar vertebra through the adapter, and the bone cement cylinder is used for pouring bone cement into the thoracolumbar vertebra through the adapter;

further, the connecting rod comprises a first connecting rod and a second connecting rod, wherein the first connecting rod penetrates through the pedicle screw to be connected with the thoracolumbar vertebra, and the second connecting rod penetrates through the connecting rod and the pedicle screw to be connected with the thoracolumbar vertebra so as to fix the position of the proximal end of the pedicle screw;

further, the first connecting rod penetrates through the pedicle screw through the connecting part to be connected with the thoracolumbar vertebra, and the connecting part is detachably connected with the pedicle screw;

further, a plurality of first connecting rods are annularly arranged at intervals at the proximal ends of the pedicle screws;

further, the connecting rod is provided with a through hole corresponding to the second connecting rod, and a positioning block is connected with the through hole in a sliding manner and used for fixing the position of the second connecting rod after pushing;

further, the top of the pedicle screw is in threaded connection with a locking bolt, the bottom of the locking bolt is provided with a bulge, and the bulge is abutted with the connecting rod;

further, the connecting rod is pre-bent.

The technical scheme of the utility model has at least the following advantages and beneficial effects: firstly, through the arrangement of the connecting component, the connecting rod, the proximal end of the pedicle screw and the thoracolumbar vertebra can be connected through the connecting rod, so that the stability of the proximal end connecting structure of the pedicle screw is improved in loose bone; secondly, through setting up of bone cement subassembly, can pour bone cement into the chest lumbar vertebra through the filling hole of pedicle of vertebral arch nail, can promote the stability that pedicle of vertebral arch nail distal end and chest lumbar vertebra are connected, avoided producing other complications because of pedicle of vertebral arch nail is not hard up; finally, through the setting of propulsion unit, can push the connecting rod into the preset hookup location through the cooperation of its propeller and adapter to and with bone cement pour into the preset pouring position, improved the stability of thoracolumbar vertebrae pedicle of vertebral arch system, promoted the effect to the osteoporosis patient and carried out the backbone disease treatment.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a thoracolumbar pedicle system according to an embodiment of the utility model;

fig. 2 is a schematic structural view of a pedicle screw of a thoracolumbar pedicle system according to an embodiment of the utility model;

fig. 3 is a schematic structural view of a perfusion member of the thoracolumbar pedicle system provided by an embodiment of the utility model;

fig. 4 is a schematic structural view of a connecting part of a thoracolumbar pedicle system according to an embodiment of the utility model;

fig. 5 is a schematic structural view of an adaptor of a thoracolumbar pedicle system according to an embodiment of the utility model;

fig. 6 is a schematic structural view of a locking bolt of a thoracolumbar pedicle system according to an embodiment of the utility model

Fig. 7 is a schematic structural view of a positioning block of a thoracolumbar pedicle system according to an embodiment of the utility model.

Icon: 1-pedicle screw, 2-connecting rod, 3-connecting component, 4-bone cement component, 5-pushing component, 6-locking bolt, 7-locating block, 11-pouring hole, 31-first connecting rod, 32-second connecting rod, 33-connecting part, 41-pouring part and 51-adapter.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

The embodiment provides a thoracolumbar vertebral pedicle system, which is arranged on thoracolumbar, as shown in figures 1-7, and comprises vertebral pedicle nails 1 and connecting rods 2, wherein the connecting rod comprises a connecting component 3, the connecting component 3 is provided with connecting rods, and a plurality of connecting rods penetrate through the proximal ends of the vertebral pedicle nails 1 and are connected with the thoracolumbar vertebrae and the connecting rods 2, so that the positions of the proximal ends of the vertebral pedicle nails 1 can be fixed; the bone cement assembly 4 comprises a pouring component 41 and bone cement, the far end of the pedicle screw 1 is provided with a pouring hole 11 corresponding to the pouring component 41, and the bone cement is poured into the thoracolumbar spine through the pouring component 41 and the pouring hole 11, so that the position of the far end of the pedicle screw 1 can be fixed; the propulsion assembly 5, the propulsion assembly 5 includes adapter 51 and propeller, and the propeller is equipped with a bone cement section of thick bamboo and the propulsion pipeline of intercommunication, and the propulsion pipeline passes through adapter 51 and connects the connecting rod with the chest lumbar vertebra, and bone cement section of thick bamboo passes through adapter 51 and pours bone cement into in the chest lumbar vertebra.

It should be noted that, firstly, through the arrangement of the connecting component 3, the connecting rod 2, the proximal end of the pedicle screw 1 and the thoracolumbar vertebra can be connected through the connecting rod, so that the stability of the proximal end connecting structure of the pedicle screw 1 is improved in loose bone; secondly, through the arrangement of the bone cement component 4, bone cement can be poured into the thoracolumbar through the pouring holes 11 of the pedicle screws 1, so that the stability of the connection between the distal ends of the pedicle screws 1 and the thoracolumbar can be improved, and other complications caused by loosening of the pedicle screws 1 are avoided; finally, through the setting of propulsion unit 5, can push the connecting rod into the preset hookup location through the cooperation of its propeller and adapter 51 to and with bone cement pour into the preset pouring location, improved the stability of thoracolumbar vertebrae pedicle of vertebral arch system, promoted the effect of carrying out the backbone disease treatment to the osteoporosis patient.

The connecting component 3, as shown in fig. 1-2, comprises a connecting rod, wherein the connecting rod penetrates through the proximal end of the pedicle screw 1 to be connected with the thoracolumbar vertebra and is connected with the connecting rod 2, the pedicle screw 1, the thoracolumbar vertebra and the connecting rod 2 can be connected through the connecting rod, and the connecting rod and the pedicle screw 1 form a certain angle, so that the stability of the proximal end of the pedicle screw 1 is improved; the proximal screw pitch of the pedicle screw 1 is larger than the distal screw pitch, so that the holding force of the pedicle screw 1 can be enhanced, the locking bolt 6 is in threaded connection with the top of the pedicle screw 1, as shown in fig. 6, the bottom of the locking bolt 6 is provided with a bulge, the bulge is abutted with the connecting rod 2, the stability of the connecting rod 2 can be improved, the connecting rod 2 is pre-bent, the fixing process is reduced, and the installation efficiency is improved; the connecting rods comprise a first connecting rod 31 and a second connecting rod 32, the first connecting rod 31 penetrates through the pedicle screw 1 through a connecting part 33 to be connected with the thoracolumbar vertebra, as shown in fig. 4, the connecting part 33 is in threaded connection with the upper part of the pedicle screw 1, the connecting part 33 is screwed into the pedicle screw 1, the connecting part 33 is provided with an inclined through hole, the first connecting rod 31 penetrates through the through hole to be connected with the thoracolumbar vertebra, a plurality of first connecting rods 31 are annularly arranged at the near end of the pedicle screw 1 at intervals, an included angle can be formed between the first connecting rods and the pedicle screw 1, and the connection stability of the pedicle screw 1 and the thoracolumbar vertebra is improved; the second connecting rod 32 is the rod-like structure, the connecting rod 2 corresponds second connecting rod 32 and is equipped with the through-hole, and connecting rod 2 corresponds through-hole sliding connection and has locating piece 7, as shown in fig. 7, locating piece 7 bottom and connecting portion 33 sliding connection, the middle part sets up the through groove and is used for inserting the connecting rod piece of connecting rod 2, top threaded connection has lock bolt 6, can connect the position of fixed connection rod 2, fix the relative position of second connecting rod 32 and pedicle screw 1 through supporting tight second connecting rod 32 simultaneously, pedicle screw 1 corresponds second connecting rod 32 and is equipped with the connecting hole, can insert second connecting rod 32 in pedicle screw 1, further promoted the stability that pedicle screw 1 connects.

The bone cement component 4, as shown in fig. 3, comprises a pouring component 41 and bone cement, wherein a pouring hole 11 is formed in the distal end of the pedicle screw 1, the pouring component 41 is in bolt connection with the pedicle screw 1, the pouring component 41 is further communicated with the pedicle screw 1, the bone cement flows through a hollow channel of the pouring component 41, passes through the pedicle screw 1 and finally is poured into the thoracolumbar vertebra through the pouring hole 11, so that the connection strength of the pedicle screw 1 and the thoracolumbar vertebra is enhanced under the action of the bone cement, and the stability of the thoracolumbar vertebra pedicle system is improved.

The pushing assembly 5, as shown in fig. 5, comprises an adapter 51 and a propeller, wherein the propeller is provided with a bone cement cylinder and a pushing pipeline which are communicated, a plugging bolt is in threaded connection with the end part of the pushing pipeline, a rotating rod is in threaded connection with the bone cement cylinder, the rotating rod is rotated to squeeze bone cement for pouring, one end of the adapter 51 is arranged corresponding to the connecting part 33, the other end of the adapter is arranged corresponding to the pouring part 41, when a connecting rod needs to be pushed, the adapter 51 is sleeved with the propeller, and the adapter 51 is in threaded connection with the connecting part 33; when bone cement needs to be poured, the adapter 51 is sleeved with the propeller, the adapter 51 is in threaded connection with the pouring component 41, pushing of the connecting rod and pouring of the bone cement can be achieved through the adapter 51, and the installation efficiency of the thoracolumbar vertebral pedicle system is improved.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (7)

1. The utility model provides a thoracolumbar vertebral pedicle system, sets up on thoracolumbar vertebra, includes pedicle screw (1) and connective bar (2), its characterized in that includes:

the connecting assembly (3) is provided with connecting rods, and a plurality of the connecting rods penetrate through the proximal ends of the pedicle screws (1) and are connected with the thoracolumbar vertebrae and the connecting rods (2) so as to fix the positions of the proximal ends of the pedicle screws (1);

the bone cement assembly (4) comprises a pouring component (41) and bone cement, wherein a pouring hole (11) is formed in the far end of the pedicle screw (1) corresponding to the pouring component (41), and the bone cement is poured into the thoracolumbar through the pouring component (41) and the pouring hole (11) so as to fix the position of the far end of the pedicle screw (1);

the propelling component (5), the propelling component (5) comprises an adapter (51) and a propeller, the propeller is provided with a bone cement cylinder and a propelling pipeline which are communicated, the propelling pipeline is used for connecting the connecting rod with the thoracolumbar through the adapter (51), and the bone cement cylinder is used for filling bone cement into the thoracolumbar through the adapter (51).

2. The thoracolumbar pedicle system of claim 1, wherein the links include a first link (31) and a second link (32), the first link (31) being connected to the thoracolumbar spine through the pedicle screw (1), the second link (32) being connected to the thoracolumbar spine through the connecting rod (2) and the pedicle screw (1) for fixing the position of the proximal end of the pedicle screw (1).

3. The thoracolumbar pedicle system as claimed in claim 2, characterized in that the first link (31) is connected to the thoracolumbar spine through the pedicle screw (1) by a connection (33), the connection (33) being detachably connected to the pedicle screw (1).

4. A thoracolumbar pedicle system as claimed in claim 3, characterized in that several of said first links (31) are arranged at annular intervals at the proximal end of the pedicle screw (1).

5. The thoracolumbar pedicle system of claim 4, wherein the connecting rod (2) is provided with a through hole corresponding to the second connecting rod (32), and a positioning block (7) is slidably connected to the through hole to fix the position of the second connecting rod (32) after pushing.

6. The thoracolumbar pedicle system as claimed in claim 5, characterized in that the pedicle screw (1) is screw-connected with a locking bolt (6) at the top, the bottom of the locking bolt (6) being provided with a protrusion, which abuts the connecting rod (2).

7. The thoracolumbar pedicle system of any of claims 1-6, characterized in that the connecting rod (2) is pre-bent.