Medical bone cement directional automatic push injection device

Abstract

The invention provides a medical bone cement directional automatic push injection device. The device comprises a linear pushing mechanism, a guiding mechanism and a bracket; the linear pushing mechanism comprises a linear motor, a bone cement push rod and a bone cement sleeve which are arranged vertically from top to bottom in sequence, wherein the bone cement push rod stretches into the bone cement sleeve, and the linear motor is fixed on the bracket; the guiding mechanism comprises a supporting shaft and a first fixing clip, a second fixing clip and a third fixing clip which sleeve the supporting shaft from top to bottom in sequence, wherein the top end of the supporting shaft is fixed on the bracket, the first fixing clip can slide vertically along the supporting shaft, and the second fixing clip and the third fixing clip are vertically limited on the supporting shaft; a motor push rod of the linear motor stretches downward and is fixedly connected with the first fixing clip, the top end of the bone cement push rod is clamped and fixed by the first fixing clip, the top end of the bone cement sleeve is clamped and fixed by the second fixing clip, and the middle section of the bone cement sleeve passes through the third fixing clip. The medical bone cement directional automatic push injection device is high in injection stability, can be remotely controlled, and is safe and reliable.

Description

technical field [0001] The invention relates to a medical bone cement injection device for minimally invasive surgery, which belongs to the technical field of medical devices. Background technique [0002] Vertebroplasty refers to percutaneous puncture, injecting bone cement into the diseased vertebral body through the pedicle or extrapedicular approach, a minimally invasive spinal surgery technique, mainly used in the treatment of osteoporotic vertebral compression fractures . Vertebral compression fracture is the most common complication in patients with osteoporosis, which can cause local pain, mobility impairment, and severe paralysis of the lower limbs. It is one of the common orthopedic diseases in elderly patients. [0003] Vertebroplasty first makes an incision about 2 mm in length on the back of the patient, then uses a special puncture needle to puncture into the diseased vertebral body through the skin under X-ray monitoring, establishes a working channel, and fi...

AI Technical Summary

Problems solved by technology

And if too much bone cement is injected into a certain part, it will leak out of the vertebral body, causing a series of complications, causing irreparable damage to the patient, and increasing the risk of surgery

In addition, due to the limited length of the bone cement outlet tube of the existing bolus injection system, doctors are exposed to a large amount of X-ray radiation during the bolus injection process in the ward. Even if the protective plate can be used for protection, there are still certain safety hazards

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