CN203369950U

CN203369950U - Pedicle screw of double-angle structure

Info

Publication number: CN203369950U
Application number: CN201320414046.9U
Authority: CN
Inventors: 滕鲁
Original assignee: ZHEJIANG CANWELL MEDICAL CO Ltd
Current assignee: Canwell Medical Co ltd
Priority date: 2013-07-10
Filing date: 2013-07-10
Publication date: 2014-01-01
Anticipated expiration: 2023-07-10

Abstract

The utility model belongs to medical instruments, and particularly relates to a pedicle screw of a double-angle structure. The pedicle screw of the double-angle structure comprises a screw base, an annular gasket and a universal screw body. The pedicle screw of the double-angle structure is characterized in that a slope is arranged at the bottom of the screw base, so that the universal screw body swings within two angle ranges, one angle range is from 0 degree to 15 degrees, and the other angle range is from 0 degree to 45 degrees. According to the pedicle screw of the double-angle structure, the slope inclined from 0 degree to 20 degrees is arranged at the bottom of the screw base, so that the swinging angle range of the universal screw body is widened, the adapted operation symptom range is wide, a doctor accepts the pedicle screw and masters the use method of the pedicle screw easily, the pedicle screw of the double-angle structure is merged with the market rapidly, a spinal fracture position is completely recovered, and the injured joint is capable of slightly moving within a physiological activity range after recovery.

Description

The pedicle nail of two angle structures

Technical field

This utility model belongs to medical mechanical domain, specifically the pedicle nail of a kind of pair of angle structure.

Background technology

At present, both at home and abroad at operative treatment underage child skoliosis, lumbar vertebra compression fracture reset and the neck Lumbar Intervertebral Disc Degeneration due to the disease aspect, pedicle nail has obvious advantage, it can guarantee between useful motion and sections the stable of transmission of loading, the growth potential of spinal column, the spinal column abnormal motion that can stop again the algesiogenic direction of motion and plane of movement, retain other normal lumbar vertebra mobilities simultaneously, change the load-bearing pattern of spinal motion segment, reduce damaged part, fibrous ring, the damage of way of escape vertebral plate, the stress that disperses little joint, the abnormal movement of restriction lumbar vertebra, especially to juvenile's spine correcting position important role, on the stress in the neighbouring section intervertebral disc and not impact of motion, on the not impact of other body parts, guarantee normal operation and function.

Certainly there are some problems in pedicle nail in operation at present, the screw angle particularity for example required for different symptoms, it is required that existing common pedicle screws system can not provide, generally in spinal surgical procedure, Universal screw nail that the patient uses and screw base angulation may be greater than 15 °, also may be less than 15 °, generally for being less than 15 °, existing conventional pedicle nail just can solve, and existing common pedicle screws system just can't be realized while being greater than 15 °.

Summary of the invention

The purpose of this utility model is for the deficiencies in the prior art, provides a kind of and can accelerate that operation is put nail, different pivot angles are provided, the pedicle nail of two angle structures that wider, the whole surgery systems of symptom of adaptation is agreed with more.

The technical scheme that this utility model adopts is:

The pedicle nail of a kind of pair of angle structure, comprise screw base, ring washer, Universal screw nail, it is characterized in that: the screw base bottom is provided with an inclined-plane, Universal screw nail and screw base are combined by the form of sphere-contact, ring washer and screw base riveted joint, make the screw base inner wall deformation, thereby ring washer can not dropped out, and can exert pressure to ring washer, to guarantee the direction of Universal screw nail.

This utility model arranges an inclined-plane by the screw base bottom, makes Universal screw nail form two kinds of pivot angle scopes, and a kind of is 0 degree to 15 degree, another kind is 0 degree to 45 degree, thereby make the operation symptom of adaptation wider, the acceptance that the doctor can be more prone to and grasp, incorporate market faster; The pedicle nail of the two angle structures of this utility model can not only make the spinal bone folding position be returned to one's perfect health, and make to damage joint can fine motion in the physiological activity scope after resetting.

The accompanying drawing explanation

Fig. 1 is this utility model structural representation.

Fig. 2 is the structural representation of this utility model screw base.

Fig. 3 is that this utility model Universal screw nail and screw base form 0 degree to 15 degree schematic diagrams.

Fig. 4 is that this utility model Universal screw nail and screw base form 0 degree to 45 degree schematic diagrams.

The specific embodiment

Below contrast accompanying drawing, by embodiment, this utility model is further described.

As shown in Figure 1, the pedicle nail of a kind of pair of angle structure, comprise screw base 1, ring washer 2, Universal screw nail 3, it is characterized in that: screw base 1 bottom is provided with an inclined-plane 4, and Universal screw nail 3 and screw base 1 are combined by the form of sphere-contact, and ring washer 2 and screw base 1 are fixed by the mode of riveted joint, make screw base 1 inner wall deformation, thereby ring washer 2 can not dropped out, and can exert pressure to ring washer 2, to guarantee the direction of Universal screw nail 3.

As shown in Figure 2, the inclined-plane 4 of screw base of the present utility model 1 bottom is 0 °～20 degree with the formed angle of screw base 1 bottom end face.

As shown in Figure 3, Figure 4, Universal screw nail of the present utility model 3 forms two kinds of pivot angles by screw base 1 and inclined-plane 4, a kind of be 0 degree to 15 degree, another kind is that 0 degree is to 45 degree.

Claims

1. the pedicle nail of two angle structures, comprise screw base, ring washer, Universal screw nail, it is characterized in that: the screw base bottom arranges an inclined-plane, makes Universal screw nail form two kinds of pivot angle scopes.

2. the pedicle nail of according to claim 1 pair of angle structure, it is characterized in that: the pivot angle scope of Universal screw nail is a kind of is 0 degree to 15 degree, and another kind is 0 degree to 45 degree.

3. the pedicle nail of according to claim 1 and 2 pair of angle structure is characterized in that: the angle that inclined-plane and screw base bottom end face form is 0 °～20 °.

4. the pedicle nail of according to claim 1 and 2 pair of angle structure, it is characterized in that: Universal screw nail and screw base are combined by the form of sphere-contact, ring washer and screw base riveted joint.