Vascular Clamp
Vascular Clamp - Related Videos
11:10
Visualization of Vascular and Parenchymal Regeneration after 70% Partial Hepatectomy in Normal Mice
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Cited by 3 •
2016
Tools used for visualizing vascular regeneration require methods for contrasting the vascular trees. This film demonstrated a delicate injection technique used to achieve optimal contrasting of the vascular trees and illustrate the potential benefits resulting from a detailed analysis of the resulting specimen using µCT and histological serial sections.
09:43
Patch Clamp Electrophysiology
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2023
Neuron cell membranes are populated with ion channels that control the movement of charge into and out of the cell, thereby regulating neuron firing. One extremely useful technique for investigating the biophysical properties of these channels is called patch clamp recording. In this method, neuroscientists place a polished glass micropipette against a cell and apply suction to form a high resistance seal. This process isolates a small “patch” of membrane that contains one or more ion channels.
06:50
A Model of Acute Lung Injury Following Visceral Ischemia-Reperfusion by Supra-Coeliac Aortic Cross Clamping in Rats
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Cited by 1 •
2025
This study describes a model of acute lung injury following visceral ischemia-reperfusion during supra-celiac aortic cross-clamping via laparotomy in rats. It enables the investigation of both the clinical and biological effects of aortic clamping as well as the impact of ischemia-reperfusion on underlying organs and remote lung injuries.
11:10
Hyperinsulinemic-euglycemic Clamps in Conscious, Unrestrained Mice
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Cited by 150 •
2011
The hyperinsulinemic-euglycemic clamp, or insulin clamp, is the gold standard for assessing insulin action in vivo. A method for performing insulin clamps in mice is described. This includes a method for arterial catheterization that permits experiments to be performed in conscious, unrestrained mice with minimal stress.
08:33
Reproducible Arterial Denudation Injury by Infrarenal Abdominal Aortic Clamping in a Murine Model
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Cited by 5 •
2016
Understanding the cellular and molecular mechanisms of re-endothelialization following arterial denudation injury is of paramount importance in preventing thrombosis and restenosis of arteries. Here we describe a protocol for reproducible arterial denudation injury of the infrarenal abdominal aorta. The procedure was developed to investigate the underlying mechanisms that regulate endothelial regeneration using mouse models.
FAQs
The hinged jaws transmit adjustable pressure to the vessel wall, allowing researchers or clinicians to produce either partial restriction or complete occlusion. Partial compression can reduce flow while preserving some passage, whereas complete closure is used when flow must be stopped temporarily. This mechanical control helps tailor vascular management to the procedure or experimental objective.
Clamp pressure must be sufficient to control unwanted blood flow without applying unnecessary force to the vessel. Excessive compression may injure the endothelium, the vessel’s inner cellular lining, or affect underlying tissue. Insufficient pressure may allow continued flow and bleeding. Balancing these effects supports a workable field while limiting mechanical damage to vascular structures.
Selecting an appropriate clamp design helps match the instrument’s mechanical action to the vessel and the intended degree of occlusion. Because designs differ in how their jaws apply pressure, the choice affects control of flow and the likelihood of compression-related injury. Design selection therefore contributes to both procedural precision and preservation of vessel integrity.
Partial occlusion narrows the vessel enough to reduce blood flow while leaving some passage through the lumen. Complete occlusion closes the vessel temporarily and stops flow across the clamped region. The distinction matters because the desired level of control depends on whether the procedure requires reduced circulation or a fully stopped flow field.
During vessel isolation, temporary compression helps separate the target vessel from surrounding circulation by controlling flow through it. In anastomosis, the joining of vessel segments, the clamp helps maintain a manageable field while the connection is performed. These applications depend on controlled, temporary occlusion rather than permanent alteration of the vessel.
Transplantation procedures may require temporary control of vessels so that blood flow can be managed while vascular connections or related surgical work are performed. A clamp supports this control by limiting or stopping flow at a selected location. Its value depends on choosing pressure and design that provide access without unnecessarily harming the vessel wall or underlying tissue.
In biological research, temporary vessel compression provides a way to alter circulation under controlled conditions. Investigators can use partial or complete occlusion to examine how vascular function responds when flow is reduced or stopped in a defined region. The resulting model can help connect mechanical changes in blood flow with observed vascular responses, while clamp pressure remains an important experimental variable.
Researchers should consider whether the clamp achieved the intended degree of flow control and whether the vessel remained structurally protected. Relevant concerns include unwanted residual flow, excessive compression, endothelial injury, and effects on underlying tissue. Evaluating these outcomes helps determine whether the selected clamp design and pressure were appropriate for the biological procedure or experimental model.