A kind of fixing pedicle nailTechnical field
The invention belongs to technical field of medical instruments, be specifically related to a kind of fixing pedicle nail.
Background technology
Pedicle screw, as a kind of spinal surgery device of maturation, is widely used.Current pedicle nail mainly offshore company is developed and is released in market, and it all adopts hollow pedicle to follow closely, and presets length and the radian of rod, device design is loaded down with trivial details, and processing technology difficulty is large, and especially the difficulty of processing of hollow pedicle nail is large, cost of manufacture is high, expensive, troublesome poeration.The pedicle screw-rod fixed system of domestic employing, substantially divide two large classes, a class is still similar to external pedicle screw, adopts the design of hollow pedicle nail, presets excellent length and radian, there is above-mentioned identical defect; The non-hollow Pediculus arcus vertebrae screw of another kind of application, but using the locating effect that cannot reach hollow pedicle nail in this non-hollow Pediculus arcus vertebrae screw process, and Pedicle Screw position is difficult to accurate control.
Summary of the invention
The object of the invention is to solve above-mentioned technical problem and provide that a kind of structure is simple, cost of manufacture is low and the fixing pedicle nail that uses of handled easily.
For achieving the above object, the present invention adopts following technical scheme:
A kind of fixing pedicle nail, comprise and there is externally threaded threaded portion, described threaded portion has the reeded self-taped type termination of band, the other end of described threaded portion connect one to be oppositely arranged by two relative wallboards and in bottom curved connection and the U-shaped portion that formed, the inwall of described two wallboards has female thread, and relative position offers a hole respectively with described two wallboards.
Improve as one, described wallboard is arc.
The present invention fixes pedicle nail, owing to having externally threaded threaded portion, described threaded portion has the reeded self-taped type termination of band, the other end of described threaded portion connect one to be oppositely arranged by two relative wallboards and in bottom curved connection and the U-shaped portion that formed, the inwall of described two wallboards has female thread, relative position offers a hole respectively with described two wallboards, fixed by the screw-internal thread fit on plug screw and wallboard after can conveniently implanting, give the more hommization of operation technique and select.
Accompanying drawing explanation
Figure 1 shows that the structural representation of a kind of fixing pedicle nail that the embodiment of the present invention provides;
Figure 2 shows that the side view under another visual angle of Fig. 1.
Detailed description of the invention
Below, in conjunction with example, substantive distinguishing features of the present invention and advantage are further described, but the present invention is not limited to listed embodiment.
Shown in Fig. 1,2, the figure shows the structure of a kind of fixing pedicle nail that the embodiment of the present invention provides.For convenience of explanation, illustrate only the part relevant with the embodiment of the present invention.
Refer to Fig. 1,2, a kind of fixing pedicle nail, comprise and there is externally threaded threaded portion 1, described threaded portion 1 has the self-taped type termination 2 of band fluted 3, the other end of described threaded portion 1 connect one to be oppositely arranged by two relative wallboards 4 and in bottom curved connection and the U-shaped portion 5 that formed, the inwall of described two wallboards 4 has female thread 6, and relative position offers a hole 8 respectively with described two wallboards 6.The panel surfaces 7 at place, described hole 8 for have necessarily inwardly concave dent into shape structure.
Improve as one, described wallboard is arc.
The present invention fixes pedicle nail, owing to having externally threaded threaded portion, described threaded portion has the reeded self-taped type termination of band, the other end of described threaded portion connect one to be oppositely arranged by two relative wallboards and in bottom curved connection and the U-shaped portion that formed, the inwall of described two wallboards has female thread, relative position offers a hole respectively with described two wallboards, fixed by the screw-internal thread fit on plug screw and wallboard after can conveniently implanting, give the more hommization of operation technique and select.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.