Spinal Access Needle
Spinal Access Needle - Related Videos
07:54
Accessing the Subdural Space of the Rodent Spinal Cord for Treatment Delivery
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2025
This surgical protocol is a step-by-step guide to insert an intrathecal catheter into the spinal subdural space of a rodent to deliver targeted treatment.
02:58
Laser Doppler Needle Probe Insertion: A Technique for Real-time Quantification of Blood Flow within the Spinal Cord in a Porcine Model
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2025
This video demonstrates the placement of a laser Doppler needle probe in the spinal cord of a porcine model. This helps in the continuous quantification of blood supply to the spinal cord, an important assessment in spinal cord injury.
09:51
Intraosseous Needle Placement
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2023
Source: Julianna Jung, MD, FACEP, Associate Professor of Emergency Medicine, The Johns Hopkins University School of Medicine, Maryland, USA For unstable patients requiring urgent administration of medications, fluids, or blood products, establishing vascular access quickly is essential. However, there are many factors that can complicate placement of a peripheral intravenous cannula (PIV), and it is extremely common for PIV attempts to fail. PIV placement may be technically challenging in small...
03:23
Generating a Mouse Model with a Spinal Cord Injury
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2025
Source: Kumar, S., et. al. Mouse Model of Pressure Ulcers After Spinal Cord Injury. J. Vis. Exp. (2019)This video demonstrates a detailed induction of spinal cord injury in mice. The anesthetized mouse is dissected to expose T9-T10 vertebrae, and their spinous processes are removed. The exposed spinal cord is then transected to inflict the injury. The surgical area is then closed, and the mouse is allowed to recover.
09:46
Training Persons with Spinal Cord Injury to Ambulate Using a Powered Exoskeleton
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Cited by 58 •
2016
Training a person with paralysis to ambulate using a powered exoskeleton may present challenges. The goals are to present the candidate selection criteria and the training procedures for exoskeletal-assisted walking and other mobility skills that can be progressed as the participant's skill level improves.
FAQs
The stylet helps keep the needle lumen clear while the instrument passes through the skin, ligaments, and dura. This supports controlled advancement and reduces the chance that tissue will obstruct the internal channel before the needle reaches the subarachnoid space. Once placement is achieved, cerebrospinal fluid flow can help confirm that the intended space has been entered.
Tip geometry and overall needle design influence how the instrument passes through tissue, how precisely it can be positioned, and how much patient discomfort may occur. These features also affect procedural success and safety. Selecting an appropriate design therefore requires attention to the intended use, whether diagnostic sampling, spinal anesthesia, or medication delivery.
Cerebrospinal fluid flow provides a direct procedural indication that the needle has reached the subarachnoid space. This confirmation distinguishes successful entry from advancement that has not yet reached the intended location. In lumbar puncture and related procedures, recognizing this outcome helps clinicians proceed with sampling or treatment delivery while maintaining controlled access.
The same access principle can serve different clinical objectives. During lumbar puncture, the needle enables cerebrospinal fluid collection for diagnostic sampling. In spinal anesthesia, it permits delivery of anesthetic, while selected intrathecal treatments use the route to administer other medications. The clinical purpose determines whether the desired outcome is sampling, anesthesia, or targeted drug delivery.
A typical workflow includes advancing the sterile needle through the back and successive tissue layers toward the spinal canal, maintaining controlled placement, and using the stylet as needed to keep the lumen clear. Entry into the subarachnoid space is assessed through cerebrospinal fluid flow. The procedure then proceeds according to its diagnostic or therapeutic purpose.
Spinal access is relevant when the clinical objective requires cerebrospinal fluid sampling, spinal anesthesia, or delivery of selected medications into the intrathecal space. Its value comes from reaching the subarachnoid space directly rather than using the needle only for superficial access. Needle design, tip geometry, and placement remain important because they influence comfort, success, and safety.