Sacroiliac joint through-screw positioning coaxial guide and assembly thereof

Abstract

The invention relates to the field of medical instruments, in particular to a sacroiliac joint through-screw positioning coaxial guide and an assembly thereof. The sacroiliac joint through-screw positioning coaxial guide comprises a first positioning rod for fixing a first puncture sleeve, a second positioning rod for fixing a second puncture sleeve, an adjusting device for adjusting a relative distance between the first positioning rod and the second positioning rod, and a fixing device for fixing the positions of the first positioning rod and the second positioning rod. The first positioningrod and the second positioning rod are respectively connected with the adjusting device, and the first positioning rod and the second positioning rod are axially symmetric by taking a vertical centerline of the adjusting device as an axis of symmetry, such that a horizontal centerline of the first puncture sleeve and a horizontal centerline of the second puncture sleeve are in the same line. Thefixing device is connected with the adjusting device. A sacroiliac joint screw can penetrate through a sacroiliac joint and can be accurately placed into the patient body, so that the surgical positioning is accurate, the stability is high, the safety is high, and complications such as vascular nerve injury are avoided.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a sacroiliac joint penetrating screw positioning coaxial guide and components thereof. Background technique [0002] Pelvic fracture is a common serious trauma, mostly caused by direct violent pelvic compression, often accompanied by complications or multiple injuries, the most serious is traumatic hemorrhagic shock, often associated with pelvic organ injuries, and improper treatment may high death rate. The unstable pelvic fracture of the posterior ring is a common type of pelvic fracture in clinical practice. The traditional unstable pelvic fracture of the posterior ring is traumatic and the postoperative recovery is poor. [0003] Traditional sacroiliac joint screws are mainly inserted by hand through X-ray or CT fluoroscopy. Since there are very important blood vessels and nerves around the screw channel, a slight deviation may cause serious complications. Therefore, it is...

AI Technical Summary

Problems solved by technology

This method has the disadvantages of too many times of fluoroscopy, inaccurate positioning, low safety, and easy damage to important nerves or blood vessels. The whole operation has high risks and a long learning curve. It usually requires high seniority and more experience in pelvic acetabular surgery. Doctors operate, and even experienced doctors do not easily penetrate the sacroiliac joint under X-ray or CT fluoroscopy. Ordinary sacroiliac joint screws only partially act on the sacroiliac joint, which in turn leads to its low mechanical strength

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