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Anterior cervical ramp fixation device

A technology of fixation devices and slopes, applied in the direction of fixators, internal fixators, internal bone synthesis, etc., to achieve the effect of good rehabilitation and good three-dimensional stability

Inactive Publication Date: 2016-08-17
NANFANG HOSPITAL OF SOUTHERN MEDICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, there is currently no special fixation device for the fixation of the anterior cervical slope to the cervical 3 vertebral body

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: Preparation of the anterior cervical slope fixation device according to the present invention

[0020] Anterior cervical slope fixation device according to the present invention, such as figure 1 and figure 2 As shown, it includes: the main board, which is composed of a section of inclined main board slope fixing part 10 and a horizontal main board vertebral body fixing part 11; The mainboard slope fixing part 10 and the mainboard vertebral body fixing part 11 form a certain angle so that the mainboard slope fixing part is suitable to be close to the anterior slope of the human neck and the mainboard vertebral body fixing part is suitable to be close to the human cervical 3 vertebral body. Preferably, the angle between the slope fixing part 10 of the main board and the vertebral body fixing part 11 of the main board is 114° to 148°.

[0021] Such as figure 1 As shown, three screw holes 1, 2 and 3 are evenly arranged on the mainboard slope fixing part 1...

Embodiment 2

[0028] Embodiment 2: Application of the anterior cervical slope fixation device according to the present invention

[0029] The following is an embodiment of using the anterior cervical slope fixation device according to the present invention for clinical application.

[0030] Such as image 3 , 4 As shown in the figure, the patient with upper cervical spondylosis was lying supine on the operating bed. After successful anesthesia, the skin in the surgical field of the neck was disinfected, and sterile towels and drapes were spread.

[0031] Take the anterior and retropharyngeal approach of the upper cervical spine, expose the cervical vertebral body, perform fluoroscopy positioning, resect the C1 anterior arch and C2 vertebral body, perform C2-3 intervertebral discectomy, and choose a suitable titanium cage (Johnson & Johnson) to shape the head end firmly Attached to the edge of the slope, the tail end is fixed to the C3 endplate. Filled with bone fragments, the overhanging...

Embodiment 3

[0033] Example 3: Biomechanical Evaluation of the Stability of the Anterior Cervical Ramp Fixation Device

[0034] Purpose

[0035] From the perspective of biomechanics, discuss the stability of the invention patent for upper cervical spine fixation.

[0036] Experimental Materials

[0037] Slope plate titanium cage Kirschner wire bone screws Six fresh cadaveric head and neck specimens (vertebral bodies from C0 to C4 in the occipital condyle, 4 males, 2 females; mean age, 46 years; range, 35–62 years).

[0038] experimental method

[0039] 2.1 Specimen processing

[0040] The muscle tissue of the specimen was excised, and the bone and ligament structure was preserved. All specimens were stored in sealed double-layer plastic bags and stored in a -20° freezer. Before the experiment, the specimens were thawed at room temperature. General examination and front and side X-ray films to check whether the specimens are deformed, and dual-energy ray absorptiometry to check whether th...

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Abstract

The invention relates to a clinic instrument for the department of orthopaedics, in particular to an anterior cervical approach slope fixing device. The anterior cervical approach slope fixing device comprises a main plate and wing plates. The main plate is composed of an inclined main plate slope fixing portion and a horizontal main plate centrum fixing portion. The two sides of the main plate centrum fixing portion extend to form the wing plates. A certain angle is formed by the main plate slope fixing portion and the main plate centrum fixing portion so that the main plate slope fixing portion can be suitable for being tightly attached to the anterior cervical approach slope of a human body, and the main plate centrum fixing portion can be suitable for being tightly attached to the third cervical body of the human body. The fixing device special for fixing the position from the anterior cervical approach slope to the third cervical body is provided for the first time, the good three-dimensional stability is achieved, posterior occipitocervical fixing is matched, the stability of the upper middle cervical vertebra can be constructed well, and the recovery of a patient is facilitated better.

Description

technical field [0001] The invention relates to an orthopedic clinical instrument, in particular to an anterior cervical slope fixation device. Background technique [0002] For reconstruction after subtotal resection of cervical 1 and 2 vertebral body tumors, direct screw fixation with special-shaped titanium cage was used in previous operations (Suchomel P, Buchvald P, Barsa P, et al. Single-stage total C-2 intralesional spondylectomy for chordoma with three-column reconstruction. J Neurosurgery Spine 2007; 6:611–618.8.), or fixation using extremity bone fixation devices (Rawlins JM, Batchelor AG, Liddington MI, et al. Tumor excision and reconstruction of the upper cervical spine: a multidisciplinary approach. Plast Reconstr Surg 2004; 114:1534–8.; Goel A, Karapurkar AP. Transoral plate and screw fixation of the craniovertebral region--a preliminary report. Br J Neurosurg 1994; 8:743–745.; and Robin deAndrade J; Macnab I. Anterioroccipitocervical fusion inrheumatoid arthr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/80A61B17/70
CPCA61B17/7059
Inventor 季伟孔刚刚朱青安
Owner NANFANG HOSPITAL OF SOUTHERN MEDICAL UNIV
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