Suture materials Flashcards
what is the definitino of suture?
Suture is the material used to promote wound healing by surgically joining the margins or ends of the wound and holding them securely together to reduce the tension between them
define suturing:
the process of applying a suture
define ligature
the material used to close blood vesseks and stop haemorrhage
what are some of the charaturistics of suture?
- high tensile strength
- easy to tie p secure knots
- inhibits tissue reactions
- easily steralised
- surface inhibits bacterial ahdhesion
what are the different structure types of suture?
Monofilament – consisting of a single filament with a variable thickness/diameter
Multifilament – comprising bundles of very fine filaments formed into a thicker thread of the desired diameter (they are usually braided)
what is the definition of tensile streength?
the breaking strength per unit area
what is the memory of a suture? what suture has a stronger memory?
the tendancy to retain original configuration (what it was like in the packet)
monofilament has a stronger/higher memory (more difficult to tie safe knots with
define ‘chatter’ and tissue drag of a suture
‘lack of smoothness or friction whilst passing through tissue’
define tissue reation relating to suture:
Tissues respond to the implantation of sutures as they do to other foreign material and can provoke an inflammatory response
what are the advantages of absorable suture?
- they disappear
- low risk of long-term foreign-body reation
what are the disadvantages of absorable suture?
- lose strenght
- limited period of wound support
what are the advantages of non-absorable suture?
- permenant
- provides indefinite wound support
what are the disadvantages of non-absorable suture?
- they do not disappear
- possibility of delayed reactions such as foreign body reation
what are the advantages of braided suture?
- easy to handle
- excellent knotting (very secure)
what are the disadvantages of braided suture?
- greater friction and tissue drag
- more tissue trauma