CN105287058B

CN105287058B - Adapted transpedicular intervertebral disc oblique screw interbody fusion cage

Info

Publication number: CN105287058B
Application number: CN201410353199.6A
Authority: CN
Inventors: 吴爱悯; 倪文飞; 池永龙; 王向阳; 徐华梓
Original assignee: Second Affiliated Hospital and Yuying Childrens Hospital of Wenzhou Medical University
Current assignee: The Second Affiliated Hospital of Wenzhou Medical University
Priority date: 2014-07-24
Filing date: 2014-07-24
Publication date: 2020-09-11
Anticipated expiration: 2034-07-24
Also published as: CN105287058A

Abstract

The invention relates to an intervertebral fusion device which is used for spinal surgery and is adapted to a transpedicular intervertebral disc oblique screw. The improved intervertebral fusion device consists of an upper surface, a lower surface, a left side surface, a right side surface, a rear surface, a front surface and an angular inclined plane. An angular ramp may be positioned between the left side and the front surface and between the front surface and the right side, the angular ramp being between about 15 degrees and about 75 degrees. The upper surface and the lower surface are provided with large holes which are communicated with each other to ensure that the body part is in a hollow structure and is used for placing the artificial bone or the autogenous bone. The right side surface or the left side surface or the front surface is provided with a plurality of X-ray opaque marking needles. The front surface is provided with a holding hole. The invention can be directly placed into the intervertebral space through posterior operation, thereby avoiding the defect that the position of a patient needs to be changed because the traditional technology of adapting the transpedicular intervertebral disc oblique screw can only be accessed from the front or the side, and greatly simplifying the operation steps.

Description

Adapted transpedicular intervertebral disc oblique screw interbody fusion cage

Technical Field

The invention relates to an intervertebral fusion device which is used for spinal surgery and is adapted to a transpedicular intervertebral disc oblique screw.

Background

In recent years, a new transpedicular intervertebral disc oblique screw internal fixation is reported, and the new internal fixation technology has the advantages of small trauma, light pain, quick recovery, few complications and the like, and is the direction of future surgical development. However, two screws are obliquely placed into the middle part of the upper vertebral body from the rear edge of the lower vertebral body through the intervertebral space, the common intervertebral fusion device is blocked by the screws positioned in the intervertebral space and cannot be placed, and the single autologous bone cannot achieve the mechanical property and the fusion rate of the intervertebral fusion device. In order to achieve mechanical properties and fusion rate equivalent to those of the conventional posterior four-nail two-rod system in the new transpedicular oblique screw internal fixation, a 6-shaped intervertebral fusion cage (publication No. 103263309A; publication No. 2013-08-28; patent No. 201310196800.0) adapted to the transpedicular oblique screw internal fixation was previously designed.

However, the 6-shaped structure enters the intervertebral space through a lateral approach, and the intervertebral fusion device can be placed only by changing the body position of a patient during an operation, so that the operation trouble degree is increased. Because transpedicular transforaminal oblique screw internal fixation is implemented when the patient is in the prone position, if the patient directly enters the intervertebral space through a posterior operation, the change of the body position of the patient can be avoided. However, the existing intervertebral fusion device is basically in a cuboid structure, and if the intervertebral fusion device is placed from the back, the intervertebral fusion device occupies the intervertebral space and is blocked by the intervertebral fusion device, so that percutaneous transpedicular intervertebral disc oblique screw internal fixation cannot be performed.

Disclosure of Invention

In order to directly enter the intervertebral space through a posterior operation, the posture of a patient is prevented from being changed, and meanwhile, after the intervertebral fusion cage is placed, the percutaneous transpedicular intervertebral disc oblique screw placement is not blocked. We improved it and designed it to fit the transforaminal intervertebral cage via intervertebral disc oblique screw.

The invention is realized by the following technical scheme:

1. consists of an upper surface, a lower surface, a left side surface, a right side surface, a rear surface, a front surface and an angular inclined plane.

2. The angular bevel, which may be located between the left lateral surface and the anterior surface, or between the anterior surface and the right lateral surface, has an angle of between about 15 degrees and about 75 degrees, which exactly matches the oblique angle of the transpedicular transintervertebral disc oblique screw, leaving space sufficient for insertion of the transpedicular transdiscal oblique screw, such that the transpedicular transdiscal oblique screw does not interfere with the present invention, resulting in blocking of the transpedicular transdiscal oblique screw.

3. The upper surface and the lower surface are provided with large holes which are communicated with each other, so that the bone grafting device is in a hollow structure and is used for placing artificial bones or autogenous bones.

4. The right side surface or the left side surface or the front surface is provided with a plurality of X-ray opaque marking needles.

5. The front surface is provided with a holding hole for inserting the holder, which plays a role of holding the invention.

Drawings

The attached drawings are as follows: FIG. 1: the invention has a structure schematic diagram.

In the figure: 1. an upper surface; 2. macropores; 3. a rear surface; 4. a lower surface; 5. an X-ray opaque marker needle; 6. an angular slope; 7. a front surface; 8. a holding hole; 9. a left side surface; right side face.

Detailed Description

Example 1

If the transpedicular oblique screw internal fixation is combined with unilateral intervertebral fusion device implantation, under the condition of endoscopic surgery or open traditional surgery, the intervertebral disc is removed through posterior surgical approach or transforaminal surgical approach, the upper and lower end plates are ground off, and after sufficient pressure reduction, meanwhile, artificial bones or autogenous bones are filled in the large hole 2 of the invention, and then the transpedicular oblique screw is implanted into the invention, if the transpedicular oblique screw internal fixation is right-side approach, one piece of the invention with an angular oblique plane 6 between the front surface and the right side surface 10 is selected, at the moment, the angular oblique plane just leaves a right side space for implanting the right transpedicular oblique screw through the intervertebral disc; if the left side approach is adopted, one piece of the invention with the angle inclined plane 6 between the front surface and the left side surface 9 is selected, at the moment, the angle inclined plane just reserves a left side space for being placed into the left side transpedicular pedicle and being placed under the intervertebral disc oblique screw by adopting a side endoscope channel. After the X-ray marking needle is installed, the position of the X-ray opaque marking needle (5) on a perspective view is observed through X-ray fluoroscopy in an operation, and the position of the X-ray opaque marking needle is judged. After the position is satisfied, the pedicle of vertebral arch is matched and placed with the oblique screw passing through the intervertebral disc.

Example 2

If the transpedicular intervertebral disc oblique screw internal fixation is combined with bilateral intervertebral fusion device implantation, under the condition of an endoscope or open traditional operation, the intervertebral disc is removed through posterior operation access or through intervertebral foramen operation bilateral access, the upper endplate and the lower endplate are ground off, after sufficient pressure reduction, the invention with the angular slope 6 between the front surface and the right flank 10 and the invention with the angular slope 6 between the front surface and the left flank 9 are selected, two pieces of artificial bones or autologous bones are filled in the two large holes 2 of the invention, the invention with the angular slope 6 between the front surface and the right flank 10 is implanted through the right side access, and the invention with the angular slope 6 between the front surface and the left flank 9 is implanted through the left side access. After the invention is placed, the position of the X-ray opaque marking needle (5) on the perspective view is observed through X-ray fluoroscopy in the operation, and the position of the invention is judged. After the position is satisfied, the pedicle of vertebral arch is matched and placed with the oblique screw passing through the intervertebral disc.

Claims

1. An adaptation is through pedicle of vertebral arch intervertebral disc slant screw interbody fusion cage, characterized by: the angle inclined plane is positioned between the front surface and the right side surface, the angle of the angle inclined plane is 15-75 degrees, the upper surface and the lower surface are provided with large holes which are communicated with each other to form a hollow structure, the right side surface is provided with an X-ray opaque marker needle, the front surface is provided with a holding hole, and the angle inclined plane just leaves out a right space and is used for placing a right transpedicular intervertebral disc oblique screw.