2024 VTNE Surgical Nursing Instruments Review Study Guide with New Q&A - A++ Guaranteed!
- Martensitic stainless steel
Answer: steel that has a higher carbon content and is generally used for cutting instruments because the potential for hardness during the tempering stage is greater
- Austenitic stainless steel
Answer: steel has a higher chromium content and a lower carbon content. This metal I used for hemostats and needle holders. Tungsten carbide inserts (gold handles) are often added in the jaw to increase durability.
- Forging
Answer: forming or shaping of an instrument by heating and hammering.
- Milling
Answer: cutting a forged piece to produce a final product.
- Tempering
Answer: hardening the instrument by slowly heating in a salt bath and then
immersing in oil, or "quenching".
- Passivation
Answer: using a chemical bath to remove the particles created form grinding and
other foreign materials, strengthen the steel, and aid in rust protection.
- Polishing
Answer: refining the surface to produce a shiny or matted finish.
- Tips and Jaws
Answer:
Can be traumatic or atraumatic, straight or curved, serrations, teeth or flat surfaces Serrations can have horizontal, vertical or combination.
- Box lock
Answer:
Present only with instruments with ring handles Box lock is the joint or hinge of the instrument and is usually under great stress Special care must be taken to care and inspect this area
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- Shank
Answer: AKA "shaft" or "body"
Usually the longest part of the instrument
- Ratchet
Answer: Only found on instruments with ring handles
It is a device with interlocking teeth that will lock an instrument jaw in a closed position
- Ring handle
Answer: Rings that the ring finger and thumb are placed to control the instrument
- Operating scissors
Answer:
Use: cut inanimate objects (suture, drapes, sponges)
Description: Can be straight or curved and blades can be sharp tipped or blunt tip
- Mayo Dissecting Scissors
Answer:
Use: cutting large muscle masses, cartilage, any other non-delicate tissue.
Description: Blades are thick and approximately on-third the instrument's length. The blades can be straight or curved.
- Metzenbaum Dissecting Scissors
Answer:
Use: delicate surgical dissection
Description: blades are thin, delicate, an approximately one-fourth the instruments length. The shaft is long and thin, and the blades can be straight or curved.
- Wire Cutting Scissors
Answer:
Use: cut stainless steel wire
Description: about 4.75 inches long, scissors has short, compact blades that are serrated, the blades may be angled or straight
- Straight Spencer Delicate-Scissors
Answer:
Use: suture removal
Description: has one blade in the shape of a hook that cradles the suture to be cut.
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- Straight Littauer Stitch Scissors
Answer:
Use: suture removal in large animal
Description: has one blade in the shape of a hook that cradles the suture to be cut.
- Lister Bandage Scissors
Answer:
Use: remove bandages and other dressing
Description: length is from 3.5 to 8 inches long, one blade ends in a blunt triangle and the scissors are angled
- Knowles Bandage Scissors
Answer:
Use: remove bandages and other dressing
Description: one blade ends in blunt triangle with the scissors being straight, blades are usually finer then Knowles bandage Scissors
- Halstead mosquito hemostatic forceps
Answer:
Use: clamp or occlude small vessels
Description: about 5.5 inches long, small jaws with fine horizontal serrations that extend the entire length of the tip.
- Hartman Mosquito Forceps
Answer:
Use: clamp or occlude small capillaries or vessels
Description: about 3.5 inches long, has long crosswise grooves on the entire jaw, Smallest hemostats with a lock box
- Kelly hemostatic forceps
Answer:
Use: clamp or occlude medium vessels or small tissue masses
Description: about 6.5 inches long, larger than the mosquito hemostat. The horizontal serrations are wider and only extend half the length of the jaw
- Crile hemostatic forceps
Answer:
Use: clamp or occlude medium vessels or small tissue masses
Description: about 6.5 - 7.25 inches long, larger than the mosquito hemostat. The horizontal serrations are wider forceps serrations extend the entire length of the jaw
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