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Sprang is made by preparing a set of warp threads either on a rectangular frame or between a pair of beams. The craftsperson then generates a fabric by interlinking the warp threads. Unlike most textile production techniques that add new rows at the end of completed rows, sprang works upon the center of a group of fibers and the material grows ...
A stocking frame was a mechanical knitting machine used in the textiles industry. It was invented by William Lee of Calverton near Nottingham in 1589. Its use, known traditionally as framework knitting, was the first major stage in the mechanisation of the textile industry, and played an important part in the early history of the Industrial ...
A standard general surgical needle holder, with a ratchet handle lock. Two specialty needle holders, Mathieu needle holder (above) and Castroviejo needle holder (below). A needle holder, also called needle driver or needle forceps, is a surgical instrument similar to a hemostat, used by doctors and surgeons to hold and push a suturing needle when performing wound closure, ligation and other ...
The French scale, also known as the French gauge or Charrière system, is a widely used measurement system for the size of catheters.It is commonly abbreviated as Fr but may also be abbreviated as Fg, FR or F, and less frequently as CH or Ch (referencing its inventor, Charrière).
The tangent frame bundle (or simply the frame bundle) of a smooth manifold is the frame bundle associated with the tangent bundle of . The frame bundle of M {\displaystyle M} is often denoted F M {\displaystyle FM} or G L ( M ) {\displaystyle \mathrm {GL} (M)} rather than F ( T M ) {\displaystyle F(TM)} .
When the needle enters the vein, venous blood pressure generally forces a small amount of blood into the set's transparent tubing providing a visual sign, called the "flash" or "flashback", that lets the practitioner know that the needle is actually inside of a vein. The butterfly offers advantages over a simple straight needle. The butterfly's ...
The Jamshidi needle is a trephine needle for performing bone marrow biopsy, whereby a cylindrical sample of tissue, a core biopsy specimen, is obtained. It is a cylindrical needle with a tapered cutting tip. [1] The tapered end reduces the potential of crush artifact. [2] It is the most commonly used needle for performing bone marrow biopsies. [3]
A wall-mounted sharps container. A needle remover is a device used to physically remove a needle from a syringe.In developing countries, there is still a need for improvements in needle safety in hospital settings as most of the needle removal processes are done manually and under severe risk of hazard from needles puncturing skin risking infection.