Micro Injection Needles
Micro Injection Needles - Related Videos
07:52
Simultaneous Electrophysiological Recording and Micro-injections of Inhibitory Agents in the Rodent Brain
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Cited by 3 •
2015
Here, we craft a glass pipette with dual functions: inhibition of deep brain structures by microinjections of drugs and real-time monitoring of their effects through simultaneous electrophysiological recordings.
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...
10:06
Personalized Needles for Microinjections in the Rodent Brain
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Cited by 3 •
2018
We describe here a protocol for microinjection in the rodent brain that uses quartz needles. These needles do not produce detectable tissue damage and ensure reliable delivery even in deep regions. Moreover, they can be adapted to research needs by personalized designs and can be re-used.
05:18
Ultrasound-Guided Needle Release Combined with Corticosteroid Injection for the Treatment of Supinator Syndrome
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2023
The deep branch of the radial nerve can easily be compressed at the arcade of Frohse due to its anatomical features. Ultrasound-guided needle release combined with corticosteroid injection is an effective and safe treatment for deep branch radial nerve adhesion.
08:25
Needle Thoracostomy
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2015
Source: Rachel Liu, BAO, MBBCh, Emergency Medicine, Yale School of Medicine, New Haven, Connecticut, USA A tension pneumothorax is a life-threatening situation in which excess air is introduced into the pleural space surrounding the lung, either through trauma to the chest cavity or as a spontaneous leak of air from the lung itself. Air trapped within the pleural space causes separation of the lung from the chest wall, disrupting normal breathing mechanisms. Pneumothorax may be small without...
FAQs
Controlled pressure converts the operator’s input into fluid movement through the needle, while the narrow shaft enters a selected target. Adjusting pressure and delivered volume allows researchers to introduce material without relying on uncontrolled fluid spread. This control supports reproducible intracellular manipulation and precise biological experiments.
Micromanipulators regulate the needle’s position, penetration, and injection volume. This coordinated control helps align the narrow shaft with a small biological target and limits unnecessary disruption during entry. By making these movements more consistent, micromanipulators improve targeting and reproducibility in experiments involving cells, tissues, or embryos.
Needle dimensions and the precision of movement strongly influence the result. A narrow shaft supports access to small targets, while controlled positioning and penetration help limit disruption. The volume driven through the needle also matters because researchers may need to deliver DNA, RNA, proteins, or other cellular components in a measured manner.
A typical workflow begins by positioning the needle over the selected cell, tissue, or embryo with a micromanipulator. The shaft is then advanced to penetrate the target, after which controlled pressure drives a measured volume through the needle. Researchers regulate position, penetration, and delivery to achieve precise introduction with minimal disruption.
Microinjection can deliver DNA, RNA, proteins, and other cellular components directly into selected biological targets. Introducing these materials at a defined location supports experiments that examine cellular behavior, function, or development. The approach is especially useful when researchers need to manipulate individual cells, embryos, or other small biological structures.
These tools are useful for embryo manipulation, intracellular delivery, and investigations of cell function and development. Their small dimensions allow researchers to target structures that require fine spatial control, while micromanipulators help produce consistent positioning and injection conditions. Consequently, the technique connects precise material delivery with studies of biological processes at cellular or developmental scales.