CN213606794U - Guider is put into to backbone pedicle of vertebral arch nail - Google Patents

Abstract

The utility model discloses a director is put into to backbone pedicle of vertebral arch nail, including L type guide bar, pedicle of vertebral arch opening sleeve pipe and pedicle of vertebral arch mouth gag, L type guide bar comprises a horizontal cylinder and a semicircle platform mark rod chi, and the contained angle is the right angle, pedicle of vertebral arch opening sleeve pipe is the type of falling T hollow tube, and the horizontal cylinder of L type guide bar sets up inside the horizontal cover of the type of falling T hollow tube, be provided with the pedicle of vertebral arch mouth gag in the vertical siphunculus of the type of falling T hollow tube, the pedicle of vertebral arch mouth gag is the T type. The utility model discloses in making the pedicle of vertebral arch nail accurately implant the pedicle of vertebral arch, both prevented that the pedicle of vertebral arch nail from not implanting the pedicle of vertebral arch damage spinal cord and nerve, strengthened spinal internal fixation's reliability again.

Description

Guider is put into to backbone pedicle of vertebral arch nail

Technical Field

The utility model belongs to the field of medical appliances, concretely relates to guider is put into to backbone pedicle of vertebral arch nail.

Background

The internal fixation in spinal surgery is a common operation mode for spinal diseases, and a pedicle screw needs to be placed in a pedicle during the operation.

The traditional method is free-hand implantation, the pedicle screw is screwed in according to the angle estimated or measured before the operation when the pedicle screw is implanted, even if the abduction angle head inclination or tail inclination is measured before the operation, the abduction angle and the head inclination or tail inclination angle of the pedicle screw cannot be ensured to enter according to the angle measured before the operation when the pedicle screw is screwed in the operation, and the abduction angle estimated in the operation and the angle measured before the operation have certain errors, so that the pedicle screw cannot be completely placed in the pedicle screw, even the spinal cord or the nerve is damaged, the internal fixation of the spinal column loses the due reliability, and the significance of the internal fixation of the spinal column is lost.

The pedicle of the thoracic vertebra is obviously smaller than that of the lumbar vertebra, and in addition, the thoracic vertebra canal is relatively narrow, so the operation of the pedicle screw of the thoracic vertebra is more difficult. The patent with publication number CN203970530U proposes a guiding device for thoracolumbar solid pedicle screws, which can realize the self-guiding of the solid pedicle screws so as to accurately place the screws. But it can not be adjusted according to the actual characteristics of the thoracic vertebra, the foot position is inaccurate, and the positioning is not fine. The existing nail feeding method has the defects of different nail penetration failure rates, incapability of freely adjusting and positioning in real time, inaccurate positioning of the abduction angle and head inclination of a needle, and inaccurate positioning of the tail side inclination angle. The pedicle screw positioning device is simple in positioning operation, can be freely adjusted in the operation process, and is beneficial to realizing accurate positioning and guiding of pedicle screws.

Disclosure of Invention

In view of this, the utility model provides a guider is put into to backbone pedicle of vertebral arch nail makes the pedicle of vertebral arch nail accurately put into the pedicle of vertebral arch.

The embodiment of the utility model provides a technical scheme is:

the utility model provides a director is put into to backbone pedicle of vertebral arch nail, includes L type guide bar, pedicle of vertebral arch opening sleeve pipe and pedicle of vertebral arch mouth gag, L type guide bar comprises a horizontal cylinder and a semicircle platform mark rod chi, and the contained angle is the right angle, pedicle of vertebral arch opening sleeve pipe is the type of falling T hollow tube, and the horizontal cylinder of L type guide bar sets up inside the horizontal sleeve of the type of falling T hollow tube, be provided with the pedicle of vertebral arch mouth gag in the vertical siphunculus of the type of falling T hollow tube, the pedicle of vertebral arch mouth gag is the T type.

The upper end of the semicircular table mark rod ruler is smaller, the bottom end of the semicircular table mark rod ruler is larger, and the bottom surface of the horizontal cylinder is connected with the bottom of the side plane of the semicircular table mark rod ruler.

And the horizontal cylinder of the L-shaped guide rod is fixedly connected with the pedicle opening sleeve through a screw.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses in can making the pedicle of vertebral arch nail accuracy put into the pedicle of vertebral arch, prevent that the pedicle of vertebral arch nail from not putting into pedicle of vertebral arch and damaging spinal cord and nerve, strengthened the reliability of backbone internal fixation.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure, a 1-L-shaped guide rod, a 2-pedicle opening sleeve and a 3-pedicle opener are shown.

Detailed Description

The present invention will be described in detail with reference to the following embodiments.

Referring to fig. 1, a vertebral pedicle screw implantation guide comprises an L-shaped guide rod 1, a vertebral pedicle opening sleeve 2 and a vertebral pedicle opener 3.

The utility model discloses a nail abduction instrument, including L type guide bar, semicircle platform scale rod chi, horizontal cylinder and semicircle platform scale rod chi, 1 horizontal cylinder of L type guide bar and semicircle platform scale rod chi are constituteed, semicircle platform scale rod chi upper end is less, and the bottom is great, and horizontal cylinder bottom surface is connected with semicircle platform scale rod chi side plane bottom, and the contained angle is the right angle, and the use is hugged closely with vertical semicircle column side plane to electron goniometer during the use, and abduction can confirm to put the abduction angle of nail.

The pedicle of vertebral arch opening sleeve 2 is an inverted T-shaped hollow tube, the L-shaped guide rod is arranged inside a horizontal sleeve of the inverted T-shaped hollow tube, and a pedicle of vertebral arch opener is arranged in a vertical through tube of the inverted T-shaped hollow tube and is T-shaped.

The L-shaped guide rod 3 is fixedly connected with the pedicle of vertebral arch opening sleeve 2 through screws.

The utility model discloses a use method as follows:

when the device is used, the electronic goniometer is tightly attached to one side of the plane of the L-shaped guide rod, the abduction angle measured before the operation can be determined according to the degree of the electronic goniometer in the inward and outward directions in the vertical direction of the longitudinal axis of the spine, the inverted T-shaped pedicle of vertebral arch opening sleeve is sleeved outside the cylindrical cross rod of the L-shaped guider, the pedicle of vertebral arch opening sleeve is arranged in the pedicle of vertebral arch opener, the pedicle of vertebral arch opening sleeve is directly 4mm, and the inner diameter of the sleeve is 4.5 mm. The mouth gag can not shake in the sleeve.

When the bed is used, the bed is parallel to the ground, the patient lies on the bed and is completely attached to the bed, and the spine does not rotate inside and outside. The vertebral arch nail is placed in a body position and then is subjected to perspective, the angle of inclination of the vertebral body to be driven into the vertebral arch nail to the head side or the tail side is measured, the abduction angle of the vertebral arch pedicle is measured through a ct sheet, the vertebral arch pedicle sleeve is rotated before the nail is placed, the angle of inclination of the head or the tail is measured through an electronic goniometer, the external screw is fixed, the angle of inclination of the head or the tail is determined, and the abduction angle is determined according to the measured angle intraoperative electronic goniometer. After the two angles are determined, the pedicle opener can be driven into the pedicle.

The electronic goniometer is a miniature electronic level measuring instrument purchased externally, different placement positions and different directions are adopted according to a pedicle of vertebral arch insertion abduction angle (an included angle between a pedicle of vertebral arch insertion extension line and an extension line of a spinous process horizontal line) and a pedicle of vertebral arch head inclination or tail inclination angle (an included angle between the pedicle of vertebral arch insertion extension line and a spinous process perpendicular line) in the operation, the abduction angle is measured, the miniature electronic measuring instrument is placed on the inner side of the L guide rod and can be naturally attached, the abduction angle is measured in real time, the head inclination or the tail side inclination is measured, and similarly, if the side face of the pedicle of vertebral arch opener is placed, the head inclination or the tail side inclination angle.

The content of the present invention is not limited to the examples, and any equivalent transformation adopted by the technical solution of the present invention is covered by the claims of the present invention by those skilled in the art through reading the present invention.

Claims (3)

1. The utility model provides a director is put into to spinal pedicle of vertebral arch nail which characterized in that:

including L type guide bar (1), pedicle of vertebral arch opening sleeve pipe (2) and pedicle of vertebral arch mouth gag (3), L type guide bar (1) comprises a horizontal cylinder and a semicircle platform mark rod chi, and the contained angle is the right angle, pedicle of vertebral arch opening sleeve pipe (2) are the type of falling T hollow tube, and the horizontal cylinder of L type guide bar sets up inside the horizontal sleeve pipe of the type of falling T hollow tube, be provided with pedicle of vertebral arch mouth gag (3) in the vertical siphunculus of the type of falling T hollow tube, pedicle of vertebral arch mouth gag (3) are the T type.

2. The pedicle screw insertion guide as claimed in claim 1, wherein:

the upper end of the semicircular table mark rod ruler is smaller, the bottom end of the semicircular table mark rod ruler is larger, and the bottom surface of the horizontal cylinder is connected with the bottom of the side plane of the semicircular table mark rod ruler.

3. The pedicle screw insertion guide as claimed in claim 2, wherein:

and the horizontal cylinder of the L-shaped guide rod (1) is fixedly connected with the pedicle opening sleeve (2) through screws.

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