Sutures and needles

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definitions, description

Suture

A strand of material used to ligate blood vessels or approximate tissue

Size: relating to suture

The diameter of the suture material. Numerical- the number of 0's increases - diameter gets smaller.

Tensile Strength of suture

The amount of tension or pull that a suture will withstand when knotted before it breaks

Monofilament suture

Suture that is made of a single strand of material

Natural Fibers

Fibers made from raw materials

Synthetic Fibers

Man-made fibers. Fibers are often made with a combination of products.

Natural Absorbable Suture

Suture that is absorbed by the body over a period of time. The suture is dissolved and broken down by body enzymes

Synthetic Absorbable Suture

Suture that breaks down by hydrolysis

Non-absorbable suture

Suture that is not dissolved by the body enzymes or hydrolyzed body tissue. Once sewn in, it is considered permanent.

hydrolysis

Breaking down complex molecules by the chemical addition of water

Ligature

Strand of material used to tie off a blood vessel or organ

Identify the parts of a needle

Needle point, needle body, eye

swaged needle

An eyeless needle where needle and suture are joined together as one continuous unit

Free needle

No suture attached to needle-"Eyed Needle" - suture must be threaded through the eye of the needle; as in the French eye needle or Keith needle

Single suture packet

Contains one singular needle in packet

Multi suture packets MS

Multiple needles in one packet-labelled as "MS"-contain from 3 to 10 swaged sutures

difference between 5-0 suture/#5 suture

5-0 suture is smaller diameter than #5 suture

Define USP

United States Pharmacopeia--specifies diameter range for suture materials

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