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Scalpels may be single-use disposable or re-usable. Re-usable scalpels can have permanently attached blades that can be sharpened or, more commonly, removable single-use blades. Disposable scalpels usually have a plastic handle with an extensible blade (like a utility knife) and are used once, then the entire instrument is discarded. Scalpel ...
Various scalpels. A surgical instrument is a medical device for performing specific actions or carrying out desired effects during a surgery or operation, such as modifying biological tissue, or to provide access for viewing it. [1] Over time, many different kinds of surgical instruments and tools have been invented.
A harmonic scalpel cuts via vibration. The scalpel surface itself cuts through tissue by vibrating in the range of 55,500 Hz. The high frequency vibration of tissue molecules generates stress and friction in tissue, which generates heat and causes protein denaturation.
There are many different surgical specialties, some of which require specific kinds of surgical instruments to perform.. General surgery is a specialty focused on the abdomen; the thyroid gland; diseases involving skin, breasts, and various soft tissues; trauma; peripheral vascular disease; hernias; and endoscopic procedures.
In addition to needles and blades, anything attached to them, such as syringes and injection devices, is also considered sharps waste.. Blades can include razors, scalpels, X-Acto knives, scissors, or any other items used for cutting in a medical or biological research setting, regardless of whether they have been contaminated with biohazardous material.
For example, surgical scalpels are extremely sharp but fragile, and are generally disposed of, rather than sharpened, after use. Straight razors used for shaving must cut with minimal pressure, and thus must be very sharp with a small angle and often a hollow grind. Typically these are stropped daily or more often.
Obsidian scalpels may be purchased for surgical use on research animals. [65] The major disadvantage of obsidian blades is their brittleness compared to those made of metal, [66] thus limiting the surgical applications for obsidian blades to a variety of specialized uses where this is not a concern. [62]
Laser surgery is a type of surgery that cuts tissue using a laser in contrast to using a scalpel. [1]Soft-tissue laser surgery is used in a variety of applications in humans (general surgery, neurosurgery, ENT, dentistry, orthodontics, [2] and oral and maxillofacial surgery) as well as veterinary [3] surgical fields.