J-shaped Cannula
J-shaped Cannula - Related Videos
04:01
Cannula Implantation into the Cisterna Magna in a Mouse Model
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2025
Source: Xavier, A. L. R., et al. Cannula Implantation into the Cisterna Magna of Rodents. J. Vis. Exp. (2018)This video demonstrates the procedure for implanting a cannula into the cisterna magna of an anesthetized mouse. The technique involves guiding a needle-mounted cannula through the dura into the inverted triangular cisterna magna and securing it for targeted delivery into the cerebrospinal fluid.
01:29
Administering Oxygen by Nasal Cannula
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2025
Oxygen therapy is critical to patient care, especially for those struggling with respiratory issues. This intervention increases the oxygen concentration in the lungs, enhancing the amount of oxygen transported to the body's tissues. One standard method of delivering supplemental oxygen is through a nasal cannula, a non-invasive device that provides low to medium oxygen concentrations. Nasal Cannulas A nasal cannula is a lightweight tube split into two prongs placed in the nostrils, connected...
09:03
Morphometric Analyses of Shape: The Analysis Software Toolbox for Craniofacial Shape Quantification in Zebrafish
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2026
This work describes a protocol for quantifying craniofacial cartilage shape using free software (tpsDigs2, MorphoJ, and PAST) to measure changes in facial structure in zebrafish larvae.
03:37
Molecular Shape and Polarity
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2020
Dipole Moment of a Molecule Polar covalent bonds connect two atoms with differing electronegativities, leaving one atom with a partial positive charge (δ+) and the other atom with a partial negative charge (δ–), as the electrons are pulled toward the more electronegative atom. This separation of charge gives rise to a bond dipole moment. The magnitude of a bond dipole moment is represented by the Greek letter mu (µ) and is given by the formula shown here, where Q is the magnitude of the...
02:52
VSEPR Theory and the Basic Shapes
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2020
Overview of VSEPR Theory Valence shell electron-pair repulsion theory (VSEPR theory) enables us to predict the molecular structure, including approximate bond angles around a central atom, of a molecule from an examination of the number of bonds and lone electron pairs in its Lewis structure. The VSEPR model assumes that electron pairs in the valence shell of a central atom will adopt an arrangement that minimizes repulsions between these electron pairs by maximizing the distance between them.
FAQs
The curved tip is designed to follow the target anatomy rather than approach it as a straight pathway would. This alignment can help establish a more stable route into a vessel or anatomical compartment, supporting controlled administration or collection. In infection studies, anatomical conformity contributes to more consistent exposure and sampling conditions across experimental subjects.
A J-shaped Cannula provides a defined pathway through which researchers can administer solutions, infectious inocula, or treatments, or collect biological fluids. Maintaining that pathway helps separate the intended experimental variable from inconsistent access conditions. As a result, differences in pathogen behavior, immune responses, treatment effects, or disease progression can be assessed under more controlled circumstances.
Repeated access places greater importance on maintaining a stable pathway and limiting disruption to the experimental subject. The device supports longitudinal sampling, allowing biological fluids or responses to be assessed at multiple defined points rather than only once. This time-resolved approach can reveal changes in disease progression, host immunity, or treatment effects that a single measurement may miss.
Researchers should establish consistent conditions for the target anatomical compartment, the administered solution or infectious inoculum, and the timing of collection or treatment. Standardization makes exposure and sampling more comparable between subjects and experimental groups. It also helps link observed immune or disease-related outcomes to the planned intervention instead of to variation in access conditions.
The device is particularly useful when experiments require controlled administration, biological-fluid collection, or repeated access over time. These needs arise when researchers examine pathogen behavior, host immune responses, treatment effects, or disease progression. Its role is therefore methodological as well as practical: it supports reproducible animal procedures and creates more consistent conditions for comparing experimental outcomes.
Cannula-assisted procedures can support observations of how pathogens behave, how the host immune response changes, and how treatment influences disease-related outcomes. When access is repeated under defined conditions, researchers can compare measurements across time and experimental groups. This provides a framework for relating administered exposures or therapies to longitudinal biological responses and progression patterns.