News tagged with incision

Procedure to open blocked carotid arteries tested

(Medical Xpress)—Doctors at Washington University School of Medicine in St. Louis are investigating a minimally invasive procedure to open blocked carotid arteries in patients whose poor health or advanced age makes the ...

Sep 27, 2013
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Incisionless surgery corrects swallowing disorder

(Medical Xpress)—By passing surgical instruments through a patient's mouth, a team of doctors at Washington University School of Medicine in St. Louis has corrected a problem that prevented a woman from easily swallowing ...

Sep 06, 2013
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Operating room wait time increases infection risk

(HealthDay)—The risk of surgical site infections (SSIs) is significantly elevated with lengthier waits in the operating room prior to surgical incision, according to a study published in the July 1 issue of Spine.

Jul 11, 2013
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Cutting

Cutting is the separation of a physical object, or a portion of a physical object, into two portions, through the application of an acutely directed force. An implement commonly used for cutting is the knife or in medical cases the scalpel. However, any sufficiently sharp object is capable of cutting if it has a hardness sufficiently larger than the object being cut, and if it is applied with sufficient force. Cutting also describes the action of a saw which removes material in the process of cutting.

Cutting is a compressive and shearing phenomenon, and occurs only when the total stress generated by the cutting implement exceeds the ultimate strength of the material of the object being cut. The simplest applicable equation is stress = force/area: The stress generated by a cutting implement is directly proportional to the force with which it is applied, and inversely proportional to the area of contact. Hence, the smaller the area (i.e., the sharper the cutting implement), the less force is needed to cut something.

This text uses material from Wikipedia, licensed under CC BY-SA

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