Spinal Needles are needles which can be used to inject analgesics or anesthetics directly into the cerebrospinal fluid. The anesthetic that is injected blocks the conduction of impulses along the nerves that come in contact with it. Spinal needles are commonly referred to as lumbar puncture needles. Indications for spinal anesthesia include surgery involving the lower limbs, cardiac disease, liver disease, total hip replacement, total knee replacement, hysterectomy, caesarean section, hernia, renal failure and obstetric anesthesia. There are many different types of spinal needles with varying designs and tip geometry. An introducer is used to insert the spinal needle reduces the risk of infection, minimizes contact of needle to skin and subcutaneous tissue and avoids the development of epidural tumors. The layers that the spinal needle transverses from the posterior aspect to the anterior aspect include the skin, subcutaneous tissue, supraspinous ligament, interspinous ligament, ligamentum flavum, duramater, sub dural space, arachnoidmater and subarachnoid space. The spinal needle has three parts – the hub, the canula, and the stylet. Spinal needles come with various specifications and various brands offer needles which allow minimal trauma, rapid detection of CSF flashback, and colour coded stylets.
Types of Spinal Needles
The types of spinal needle include –
1. Quincke Babcock Needle
2. Whitacre Needle
3. Sprotte Needle
4. Pitkin Needle
5. Touhy Needle
6. Greene Needle
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