Bipolar Coagulation
Bipolar Coagulation - Related Videos
01:09
Coagulation
0 Views •
2024
The coagulation phase is a critical part of the body's process to prevent blood loss following injury to blood vessels. It involves chemical reactions that form a clot to seal the injured area. The clotting process begins shortly after injury, within 15-20 seconds for severe damage and 1-2 minutes for minor injuries. During the coagulation phase, clotting factors, or procoagulants, play a vital role in initiating and progressing the coagulation cascade. This cascade is a series of reactions...
01:06
Coagulation
0 Views •
2024
Colloidal solids are solid particles suspended in solution. They are usually negatively charged, attracting a compact primary layer of positively charged ions, which attract more counterions to form an electrical double layer. Electrostatic repulsion between the charged double layers prevents the particles from colliding, stabilizing the colloids. These solids are often undesirable because they can contain toxins that are difficult to remove. Coagulation is a technique that helps aggregate and...
08:14
Modeling Stroke in Mice: Permanent Coagulation of the Distal Middle Cerebral Artery
0 Views •
Cited by 104 •
2014
Various murine models of middle cerebral artery occlusion (MCAO) are widely used in experimental brain research. Here, we demonstrate the model of transcranial permanent distal MCAO which produces consistent cortical infarction of a size corresponding to damage imposed by the majority of human ischemic strokes.
01:30
Bipolar Disorder
0 Views •
2025
Bipolar disorder is a chronic mental health condition marked by significant mood fluctuations, including episodes of mania and depression. Elevated energy levels, heightened mood or irritability, impulsive behavior, reduced sleep needs, rapid speech, racing thoughts, inflated self-esteem, and distractibility characterize mania. Individuals with bipolar disorder often alternate between depressive and manic states, with periods of emotional stability lasting an average of six months to a year.
11:54
Imaging Exocytosis in Retinal Bipolar Cells with TIRF Microscopy
0 Views •
Cited by 18 •
2009
In this video, we demonstrate how to label and visualize single synaptic vesicle exocytosis and trafficking in goldfish retinal bipolar cells using total internal reflectance fluorescence (TIRF) microscopy.
FAQs
The main distinction is the electrical pathway. Bipolar coagulation directs current between the two opposing tips of the instrument and the tissue held between them, whereas monopolar methods use a distant grounding pad to complete the circuit. This localized pathway helps clinicians target the grasped area and is particularly relevant when coagulation is performed near delicate anatomical structures.
Tissue resistance converts the applied electrical energy into heat within the grasped area. That heat causes proteins in the tissue to denature, supporting the sealing of vessels and control of bleeding. Because the energy is concentrated between the instrument’s tips, the technique links the electrical process directly to the tissue being handled rather than relying on a remote return pathway.
Limiting energy spread helps keep the thermal effect closer to the intended treatment site. This feature matters when surgeons work near delicate structures, where unnecessary exposure of surrounding tissue could complicate precise tissue handling. Compared with monopolar methods, bipolar coagulation is described as offering a more controlled approach for localized hemostasis in these settings.
The opposing tips both grasp the target tissue and define the path through which electrical current travels. Tissue resistance within that grasped region generates the heat needed for protein denaturation and vessel sealing. This arrangement allows the instrument to combine tissue handling with localized coagulation, supporting precise control of bleeding during procedures that require careful manipulation.
The basic sequence is to position the opposing instrument tips around the tissue or bleeding vessel, hold the target between them, and apply electrical energy across the grasped area. Resistance then generates heat, producing protein denaturation and vessel sealing. The resulting localized effect can support hemostasis while the same instrument provides controlled tissue handling.
Surgeons may choose bipolar coagulation when they need localized control of bleeding and precise tissue handling, especially near delicate structures. The technique has applications in neurosurgery, ophthalmic surgery, gynecology, and other procedures. Its value in these settings comes from directing energy through the grasped tissue and limiting spread compared with monopolar approaches.