Bone cement injection device

Abstract

The invention relates to a bone cement injecting device and a bone cement injecting method. The bone cement injecting device comprises an outer pipe and an inner pipe. A sleeving passage is formed in the outer pipe, at least two layers of first injecting holes are arranged along the axial direction of the outer pipe, and at least two first injecting holes in each layer, communicated with the sleeving passage, are formed in the sidewall of the outer pipe. An injecting passage is formed in the inner pipe, at least two layers of second injecting holes are arranged along the axial direction of the inner pipe, and at least two second injecting holes in each layer, communicated with the injecting passage, are formed in the sidewall of the inner pipe. The inner pipe is arranged in the sleeving passage, the outer pipe and the inner pipe are in running fit, and the first injecting holes in each layer cooperate with the second injecting holes in the corresponding layer correspondingly. When the inner pipe rotates to a specific angle, at least one layer of first injecting holes are communicated with the corresponding layer of second injecting holes, and the rest layers of first injecting holes and the corresponding layers of second injecting holes are staggered. The bone cement injecting device and the bone cement injecting method have the advantage that bone cement injecting positions can be adjusted conveniently, so that directional injection of bone cement is achieved.

Description

technical field [0001] The invention belongs to the field of medical instruments, in particular to a bone cement injection device. Background technique [0002] In vertebroplasty, it is necessary to infuse bone cement into the vertebral body, and the medical technology of filling bone seams and gaps through bone cement flow can stabilize the vertebral body and relieve or eliminate pain. At present, bone cement injection generally adopts a catheter with a central through hole to inject the bone cement into the cone. However, in this way, the bone cement cannot be input in a directional manner during the perfusion process, which may easily cause bone cement leakage. The leakage of bone cement is the direct cause of severe complications such as spinal cord compression and nerve loss, which increases the difficulty and risk of surgery and brings burdens to doctors and patients. Contents of the invention [0003] Based on this, the present invention overcomes the defects of t...

AI Technical Summary

Problems solved by technology

However, in this way, the bone cement cannot be input in a directional manner during the perfusion process, which may easily cause bone cement leakage

The leakage of bone cement is the direct cause of serious complications such as spinal cord compression and nerve loss, which increases the difficulty and risk of surgery and brings burdens to doctors and patients.

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