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Encyclopedia > Scalpel
Various scalpels

A scalpel is a very sharp knife used for surgery, anatomical dissection, and various arts and crafts. Scalpels may be disposable or re-usable. Re-usable scalpels can have attached, resharpenable blades or, more commonly, non-attached, replaceable blades. Disposable scalpels usually have a plastic handle with an extensible blade (like a utility knife) and are used once, then the entire instrument discarded. scalpel (medical implement - knife) SS-24 Scalpel, a Soviet ICBM laser scalpel This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. ... Image File history File links Size of this preview: 309 × 599 pixelsFull resolution (874 × 1693 pixel, file size: 2. ... Image File history File links Size of this preview: 309 × 599 pixelsFull resolution (874 × 1693 pixel, file size: 2. ... “Surgeon” redirects here. ... Dissected rat showing major organs. ... Small wooden sculpture depicting a Native American mother holding her child. ... a Stanley 99E fully retracted A utility knife (also called a box cutter, a razor blade knife, a carpet knife, or a stationery knife) is a common tool used in various trades and crafts for a variety of purposes. ...


Scalpel blades are usually of hardened and tempered steel. Medical blades are made of high carbon steel, while craft blades are made of stainless steel, but titanium, ceramic, diamond and even obsidian are not unknown. For example, when performing surgery under MRI guidance, metallic blades are unusable (the steel blades would be drawn to the magnets) or may cause image artifacts. Alternatives to scalpels in surgical applications include electrocautery and lasers. For other uses, see Steel (disambiguation). ... Carbon steel is a metal, a combination of two elements, iron & carbon, where other elements are present in quantities too small to affect the properties. ... The 630 foot high, stainless-clad (type 304L) Gateway Arch defines St. ... General Name, symbol, number titanium, Ti, 22 Chemical series transition metals Group, period, block 4, 4, d Appearance silvery metallic Standard atomic weight 47. ... Fixed Partial Denture, or Bridge The word ceramic is derived from the Greek word κεραμικός (keramikos). ... This article is about the mineral. ... This article is about a type of volcanic glass. ... “MRI” redirects here. ... Ring artifact in a brain scan (Computed tomography) Artifacts are misrepresentations of tissue structures seen in medical images produced by modalities such as Ultrasonography, X-ray Computed Tomography, and Magnetic Resonance Imaging. ... Cauterization is a medical term describing the burning of the body to remove or close a part of it. ... For other uses, see Laser (disambiguation). ...

Contents

Surgical scalpels

Surgical scalpels consist of two parts, a blade and a handle. The handles are reusable, with the blades being replaceable. In medical applications, each blade is only used once, (even if just for a single, small cut). Medical scalpel handles come in two basic types. The first is a flat handle used in the #3 and #4 handles. The #7 handle is more like a long writing pen, rounded at the front and flat at the back. A #4 handle is larger than a #3, and while some blades fit both others are too large or small and can only fit one or the other. The following table of blades is incomplete and some blades listed may work with handles not specified here.

Types of surgical scalpel blades
Blade No. Compatible Handles Blade Description Uses
#10 1, 3, 7 Curved cutting edge with flat back For cutting skin and muscle in surgery, and for general carving and stencil making
#10a 4 This blade is a small disk, sharpened all the way around, except where it attaches to the handle
#11 1, 3, 4, 7 Triangular blade with sharp point, flat cutting edge parallel to the handle and flat back For precision cutting, stripping, and sharp angle cuts
#12a 3, 7 A small, pointed, crescent-shaped blade sharpened on the inside edge of the curve
#12b 3, 7 A small, pointed, crescent-shaped blade sharpened on both sides of the curve
#15 3, 7 A smaller version of the #10 For the same general uses as the #10 blade
#15c 3, 7 The #15 with a downward angle, flatter and thinner than the #15
#16 1, 3 A narrow chisel-like blade with flat, angled cutting edge, positioned higher than the axis of the handle For cutting stencils, scoring and etching
#17 1, 3 A flat face 1.6 mm chisel blade For narrow cuts
#18 2, 5, 6 A 12.7 mm chisel blade For deep cuts and scraping
#19 4 A similar blade to the #15
#22 2, 5, 6 A larger version of the #10 For general use, shaping, whittling and trimming
#24 2, 5, 6 A wide, flat, angled cutting edge For corner cuts, trimming, stripping, and cutting mats and gaskets
#25 4 A triangular blade similar to the #11, with the flat back edge taking a downwards angle
#60 4 A long blade resembling the #10 with a long cutting edge, rounded tip and flat back.
#69 1,3 A short blade similar to #18 with curved cutting edge, inverted usage and round back.

Visual diagram of a basic stencil. ...

Gripping a medical scalpel

Palmar grip
Also called the "dinner knife" grip. The handle is held with the second through fourth fingers and secured along the base of the thumb, with the index finger extended along the top rear of the blade and the thumb along the side of the handle. This grip is best for initial incisions and larger cuts.
Pencil grip
Best used for more precise cuts with smaller blades (e.g. #15) and the #7 handle. The scalpel is held with the tips of the first and second fingers and the tip of the thumb with the handle resting on the "anatomical snuff box," at the fleshy base of the index finger and thumb. Care should be taken not to allow the handle to rest too far along the index finger as this promotes an unstable grip and cramped fingers. This is widely considered the non standard grip by the medical professionals, despite its more practical usage.

The anatomical snuffbox, or radial fossa, (in Latin Foveola Radialis), is a triangular deepening on the radial, dorsal aspect of the hand - at the level of the carpal bones, specifically, the scaphoid and trapezium bones forming the floor. ...

Safety Scalpels

In the last decade, a rising awareness of the dangers of sharps in a medical environment has led to the development of various methods of protecting healthcare workers from accidental cuts and puncture wounds. According to the CDC (the Centers for Disease Control and Prevention) as many as 1,000 people each day are subject to accidental needle sticks and lacerations while providing medical care [1]. Companies like Bard-Parker and Shippert Medical Technologies offer lines of retractible-blade scalpels which protect users by covering the blade when not in use. Some such scalpels are disposable and others feature replaceable blades on re-usable metal handles. The Centers for Disease Control and Prevention (CDC) in Atlanta, Georgia, is recognized as the leading United States agency for protecting the public health and safety of people. ...


Graphic design and arts and crafts blades

X-Acto knife

Graphical and model-making scalpels tend to have round handles, with textured grips (either knurled metal or soft plastic). These are often called by the name of the most well-known manufacturer of graphic arts blades, X-Acto knives. The blade is usually flat and straight, allowing it to be run easily against a straightedge to produce straight cuts. Image File history File linksMetadata Size of this preview: 800 × 600 pixelsFull resolution (3072 × 2304 pixel, file size: 1. ... Image File history File linksMetadata Size of this preview: 800 × 600 pixelsFull resolution (3072 × 2304 pixel, file size: 1. ... Graphics are often utilitarian and anonymous,[1] as these pictographs from the US National Park Service illustrate. ... The most common type of X-acto knife, with No. ... A straightedge is a tool similar to a ruler, but without markings. ...


There are many kinds of graphic arts blades, the most common around the graphic design studio is the #11 blade which is very similar to a #11 surgical blade (q.v.). Other blade shapes are used for wood carving, cutting leather and heavy fabric, etc. Carved wooden cranes Wood carving is a form of working wood by means of a cutting tool held in the hand (this may be a power tool), resulting in a wooden figure or figurine (this may be abstract in nature) or in the ornamentation of a wooden object. ...


Ancient Scalpels

Ancient Egyptians made incisions for embalming with scalpels of sharpened Obsidian and it is even used in modern times. Ayurveda mentions the use of sharp bamboo splinters. Khafres Pyramid and the Great Sphinx of Giza, built about 2550 BC during the Fourth Dynasty of the Old Kingdom,[1] are enduring symbols of the civilization of ancient Egypt Ancient Egypt was a civilization in Northeastern Africa concentrated along the middle to lower reaches of the Nile River... This article is about a type of volcanic glass. ... Shirodhara, one of the techniques of Ayurveda Ayurveda (Devanagari: ) or Ayurvedic medicine is an ancient system of health care that is native to the Indian subcontinent. ... For other uses, see Bamboo (disambiguation). ...


See also

A laser scalpel is a scalpel for surgery, cutting tissue by the energy of laser light. ... A vibroblade is a class of science fiction weapon that uses an ultrasonic generator attached to a bladed weapon like a knife or sword. ...

References

  • Techni-Tool (April 2007). "Master Catalog" (parts catalog). 109-EP.

  Results from FactBites:
 
Scalpel - Wikipedia, the free encyclopedia (212 words)
A scalpel is a very sharp knife used for surgery as well as various arts and crafts.
The blades on scalpels are extremely sharp—merely touching a medical scalpel with bare hands to test it will cut through the skin.
Medical scalpel blades are gradually curved for greater precision when cutting through tissue.
  More results at FactBites »

 
 

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