CN209360872U - Pedicle of vertebral arch universal nail - Google Patents

Abstract

The utility model provides a kind of pedicle of vertebral arch universal nail, including drive screw, and both ends are respectively the universal nail tail at rear portion and the self-taped type end of front；U-shaped arm, bottom are connected to the universal nail tail of the drive screw；The side of the U-shaped arm is equipped with the groove to accommodate articular process.The pedicle of vertebral arch universal nail provided in the utility model, structure is simple, easy to use, when pedicle of vertebral arch universal nail is implanted into joint, the hard contact for effectively preventing U-shaped arm Yu tip out section, such as hard squeeze, collision, the problem of effective solution traditional U-shaped arm damage tip out section.

Description

Pedicle of vertebral arch universal nail

Technical field

The utility model relates to medical instruments field, especially a kind of pedicle of vertebral arch universal nail.

Background technique

A kind of spinal surgery device of the pedicle screw as maturation, has been widely used.Pedicle nail is main at present It is that offshore company develops and releases in market, is all made of hollow pedicle nail, presets the length and radian of stick, device design is numerous Trivial, manufacture craft difficulty is big, and the difficulty of processing of especially hollow pedicle nail is big, and cost of manufacture is high, expensive, surgical procedure It is complicated.

Traditional pedicle of vertebral arch universal nail generally comprises the structures such as drive screw, universal nail tail, U-shaped arm.In pedicle of vertebral arch universal nail When practical implantation joint, due to the structure problem of traditional U-shaped arm itself, the side of U-shaped arm is easy and tip out section hard contact And collision causes prominent joint injury so that the tip out section in this section of joint can be destroyed.

Utility model content

The purpose of this utility model is: providing a kind of pedicle of vertebral arch universal nail, is being implanted into solving conventional vertebral pedicle universal nail When joint, easily with tip out section hard contact and collision, the problem of causing prominent joint injury.

To achieve the goals above, the utility model provides a kind of pedicle of vertebral arch universal nail, including drive screw, both ends difference For the universal nail tail at rear portion and the self-taped type end of front；U-shaped arm, bottom are connected to the universal nail tail of the drive screw；Institute The side of U-shaped arm is stated equipped with the groove to accommodate articular process.

In one preferred embodiment of the utility model, the groove face of the groove is arcwall face.

In one preferred embodiment of the utility model, the groove extends to the U from all middle side parts of the U-shaped arm All side bottoms of shape arm.

In one preferred embodiment of the utility model, the U-shaped arm has U-lag, and the cell wall of the U-lag is equipped with Screw thread.

In one preferred embodiment of the utility model, the surface of the groove is coated with posterior limiting.

In one preferred embodiment of the utility model, the elastic layer is layer of silica gel.

In one preferred embodiment of the utility model, the layer of silica gel with a thickness of 0.5mm-2mm.

In one preferred embodiment of the utility model, the surface of the elastic layer is rough face.

The pedicle of vertebral arch universal nail provided in the utility model, structure is simple, easy to use, is implanted into and closes in pedicle of vertebral arch universal nail When section, the hard contact of U-shaped arm Yu tip out section is effectively prevented, such as hard squeeze, collision, the traditional U-shaped of effective solution Arm damages the problem of tip out section.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the pedicle of vertebral arch universal nail in the utility model embodiment.

Component is expressed as follows in figure:

1 drive screw；2U shape arm；

11 self-taped type ends；12 universal nail tails；

21 grooves；22U shape slot；

3 elastic layers.

Specific embodiment

The preferred embodiment of the utility model is introduced below with reference to Figure of description, it was demonstrated that the utility model can be implemented, The embodiment can keep its technology contents more clear and just to those of skill in the art's complete description the utility model In understanding.The utility model can be emerged from by many various forms of embodiments, the protection scope of the utility model It is not limited only to the embodiment mentioned in text.

In the accompanying drawings, the identical component of structure is indicated with same numbers label, everywhere the similar component of structure or function with Like numeral label indicates.The size and thickness of each component shown in the drawings are to be arbitrarily shown, and the utility model is not Limit the size and thickness of each component.Apparent in order to make to illustrate, some places suitably exaggerate the thickness of component in attached drawing.

Direction term that the utility model is previously mentioned, such as "upper", "lower" etc. are only the directions in attached drawing, are used only to Explanation and illustration the utility model, rather than be used to limit the protection scope of the utility model.

When certain components are described as " " another component "upper", the component can be placed directly within another component On；There may also be an intermediate member, the component is placed on the intermediate member, and the intermediate member is placed in another component On.When a component is described as " installation to " or " being connected to " another component, the two can be understood as direct " installation " or " connection " or a component " are installed extremely " indirectly by an intermediate member or " being connected to " another component.

Embodiment

As shown in Figure 1, a kind of pedicle of vertebral arch universal nail, including drive screw 1, U-shaped arm 2.

The both ends of drive screw 1 are respectively the universal nail tail 12 at rear portion and the self-taped type end 11 of front；Drive screw 1 is generally adopted Use steel construction.The bottom of U-shaped arm 2 is typically provided the connecting hole and mounting portion connecting with universal nail tail 12, and the U-shaped arm 2 has U Shape slot 22, the bottom of U-shaped arm 2 are connected to the universal nail tail 12 of the drive screw 1.U-shaped arm 2 generally uses medical plastic or steel Structure or titanium alloy.Titanium alloy is used in the present embodiment.

The cell wall of the U-lag 22 is equipped with screw thread.U-shaped hole in the U-shaped arm 2 is multiple to contact by connection strap U-shaped arm 2, screw thread is to connect the nut being mounted on the U-lag 22, to be fixedly connected with item.In order to realize the utility model Purpose, offer the groove 21 to accommodate articular process in the side of the U-shaped arm 2.Groove 21 can be set it is multiple, can also To be only arranged one, in order to simplify structure, general setting one.In the present embodiment, the groove face of the groove 21 is arc Face.

In order to enable pedicle of vertebral arch universal nail is when being implanted into joint, effect is best, and in the present embodiment, the groove 21 is from described All middle side parts of U-shaped arm 2 extend to all side bottoms of the U-shaped arm 2.

In order to further function as the effect of protection tip out section, the surface of the groove 21 is also coated with posterior limiting 3.It is described Elastic layer 3 is layer of silica gel.The layer of silica gel with a thickness of 0.5mm-2mm.If thickness is too thin, protection effect is weaker, if thickness It is too thick, then it is easy to shake after the implantation of pedicle of vertebral arch universal nail, therefore, the thickness of the layer of silica gel is preferably 1mm.

For the stability for keeping pedicle of vertebral arch universal nail to be implanted into, in the present embodiment, the surface of the elastic layer 3 be it is concave-convex not Multiple concave points can generally be arranged on elastic layer 3, or form screw thread on the surface of elastic layer 3 for flat face, with increase appropriate The frictional force of elastic layer 3 and tip out section.

The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art Art personnel can also make several improvements and modifications without departing from the principle of this utility model, these improvements and modifications Also it should be regarded as the protection scope of the utility model.

Claims (8)

1. a kind of pedicle of vertebral arch universal nail, which is characterized in that including

Drive screw, both ends are respectively the universal nail tail at rear portion and the self-taped type end of front；

U-shaped arm, bottom are connected to the universal nail tail of the drive screw；

The side of the U-shaped arm is equipped with the groove to accommodate articular process.

2. pedicle of vertebral arch universal nail according to claim 1, which is characterized in that the groove face of the groove is arcwall face.

3. pedicle of vertebral arch universal nail according to claim 2, which is characterized in that the groove is from the side of the U-shaped arm Portion extends to all side bottoms of the U-shaped arm.

4. pedicle of vertebral arch universal nail according to claim 1, which is characterized in that the U-shaped arm has U-lag, the U-lag Cell wall be equipped with screw thread.

5. pedicle of vertebral arch universal nail according to claim 1, which is characterized in that the surface of the groove is coated with an elasticity Layer.

6. pedicle of vertebral arch universal nail according to claim 5, which is characterized in that the elastic layer is layer of silica gel.

7. pedicle of vertebral arch universal nail according to claim 6, which is characterized in that the layer of silica gel with a thickness of 0.5mm-2mm.

8. pedicle of vertebral arch universal nail according to claim 5, which is characterized in that the surface of the elastic layer is rough Face.