A transscalp puncture Ommaya sac, i.e., reservoir sac drainage and fixation device

Abstract

This invention discloses a subcutaneous puncture Ommaya sac drainage and fixation device. The device consists of a medical-grade stainless steel puncture needle with side holes, whose depth can be adjusted within a safe range using a progressively threaded knob; a drainage cavity consisting of a soft pad made of medical-grade silicone material that fits snugly against the scalp surface and is securely fixed with a wraparound strap, connecting the drainage tube and drainage bottle. The puncture needle is inserted into the Ommaya sac, and the depth is adjusted to a suitable level using the progressively threaded knob. Fluid from the sac is drained through the side holes of the puncture needle into the drainage cavity and ultimately collected in the drainage device. This invention solves the problem of difficult fixation of the puncture needle in the sac. This device allows for rapid puncture of the sac and connection of the drainage bottle, reducing the need for multiple punctures of the sac due to needle adjustments and re-fixation, further reducing intracranial infections caused by scalp infections, reducing patient suffering, reducing the time spent by clinical neurosurgeons, and minimizing the tedious work associated with multiple punctures.

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