Surgical Instruments Design and Function Part 2 2024 TMW PDF

VS105 Handout #2 Unit #1- SURGICAL INSTRUMENTS DESIGN AND FUNCTION Part 2 Objectives: 1. List the 2 common sizes of scalpel handles 2. Identify the difference between small animal and large animal scalpel blades 3. Explain how scissors are classified 4....

VS105 Handout #2 Unit #1- SURGICAL INSTRUMENTS DESIGN AND FUNCTION Part 2 Objectives: 1. List the 2 common sizes of scalpel handles 2. Identify the difference between small animal and large animal scalpel blades 3. Explain how scissors are classified 4. Identify the 5 types of scissors and classify the type of blade in which they come 5. State the difference between thumb tissue and thumb dressing forceps 6. Identify the 3 types of thumb forceps Cutting Instruments: 1. SCALPELS Very ______________ division of tissues with minimal damage to nearby structures o Sharp cuts cause ________trauma and heal faster in some tissues ie. Skin o Sharp cuts will often cause _________ bleeding in some tissues Eg. _____________ SCALPEL HANDLES Different size scalpel handles are available; #3 – often called a _________________ handle #4 – often called a _________________ handle Handles are designed to hold scalpel blades Disposable handles are also available Handles often have units of ________ on them used for descriptive reference The size of the handle tells you what size _________________ will fit on it 1 SCALPEL BLADES given a number which indicates both size and shape of scalpel blade. Numbers range from #1 – 22 #3 Small Animal Handles – will only fit scalpel blades sizes___________________ #4 Large Animal Handles – will only fit scalpel blades sizes ___________________ Most commonly used blades in Veterinary Medicine are #10, #15, #20, #22 How to apply a blade to the handle: 1. Hold handle in your ____________ hand Using needle drivers, grasp blade near the middle Ensure the sharp edge is facing away from you 2. Thread the scalpel handle tip into the center of the blade. There are small ____________ on the handle tip that will fit with the cut-out portion of the blade. 3. Keep threading until blade snaps into place Should sit flush and not have any raised edges 2 How to remove a blade from the handle: 1. Grip blade with forceps or needle holders Grasp near the ________ of the blade (Point A) Have the cutting edge facing______________ from hand and body. Ensure the blade is pointing downwards and towards the trolley and not towards another member of your team. 2. While holding the handle firmly lift the back edge of the blade with the forceps or needle holders and slide away the handle. Proper way to hold the scalpel while cutting 3  2.  SCISSORS Used for cutting through tissue, and ____________________tissues (called ________dissection), and cutting suture material They must be kept sharp, or they will _________tissue rather than cutting it Available in many lengths Should only be used for their intended purpose Scissors are classified by their name or purpose: A) Operating B) Mayo C) Metzenbaum D) Suture scissors E) Bandage scissors F) Iris scissors A. Operating Scissors/Surgery scissors Intended use is to cut inanimate objects such as gauze or suture Classified by: a. Type of _______________–straight or curved Left = curved Right = straight b. Type of ______________ Blunt/blunt Sharp/sharp Sharp/blunt 4  Left = Sharp sharp blades Right = Sharp blunt blades B) Mayo Scissors: Intended Purpose: to cut large ________________masses, cartilage or other non- delicate tissue Can be ___________ or curved To identify – Mayo scissors are always “_______________” in the middle and _______________ at the end. They are always a Blunt Blunt scissor with thick blades about _____the length of the instruments’ length 5 C) Metzenbaum Scissors: Used for ________________ surgical dissection Blades are __________ and approximately ¼ of the instrument’s overall length Shaft is long and thin Long handled blunt blunt scissors with a relatively short blade More__________scissor than Mayo scissor __________________ Operating or Surgery Scissor D) Suture Scissors: Used to cut and remove suture material. Have a ______________ on one blade which is used to slip under pull up the suture material. E) Bandage Scissors: Used specifically to cut bandage material. The bottom jaw is blunted and ___________, and rests on the skin to protect it from being cut. 6 F) Iris scissors: Very small scissors with fine blades used specifically for _____________work. Can be ______________or blunt blunt blades just like regular surgery scissors 3. THUMB FORCEPS Designed for ___________________and holding tissues and dressing material They have a _______________ action – you have to force the jaws together Should be held between the _______________ and the middle and index fingers (hold like a pencil) THUMB TISSUE FORCEPS Have ____________ that allow tissue to be held with a minimum amount of crushing and prevents _____________________ To grasp and retract tissue on a short-term basis Hold like holding a pencil Also known as “ _________________________” 7 Adson Thumb Tissue Forceps Adson Brown Thumb Tissue Forceps THUMB DRESSING FORCEPS Have ______________– blunt ends and serrations on the tips Used for applying and removing ___________________ and handling hollow viscera with no damage 8