Instrument Identification

Question 1

Gelpis Retractors

Answer 1

Used for muscle & joint retraction.
- self retaining
- single point at each end
- have a ratchet

Question 2

Metzenbaum Scissors

Answer 2

Used for more delicate surgeries.
- finer & longer handles
- ‘dissecting’ scissors
- straight or curved

Question 3

Wire/pin Twisters

Answer 3

Enables easy twisting under tension.
- shear action cutter
- jaws have fenestration for extra grip
- jaws lock onto wire/pin

Question 4

Scalpel Handle Size 4

Answer 4

Used for large animal - divide tissue with minimal trauma.
- usual blades for small animal (10, 11, 12, 15).
- size 3 = small animal, 4 = large animal

Question 5

Mayo Scissors

Answer 5

Dissecting scissors.
- shorter in length and wider than metzenbaum.
- straight or curved
- most commonly used

Question 6

Cross Action Towel Clip

Answer 6

Used to attach drape to patient or instrument to operating site.
- less traumatic to tissue than backhaus
- spring like clip
- cross shape

Question 7

Mcphails Needle Holder

Answer 7

• traditionally have copper in the tips (can get with T.Carbide as stronger)
• handles have a spring ratchet
• squeeze handle to release needle

Question 8

Olsen-Hegar Needle Holders

Answer 8

• cutting edge
• ratchet
• very popular

Question 9

Sherman Plate

Answer 9

Internal fixation device
- identified by rounded ends and tank track like.
- used to immobilise fracture site

Question 10

Venables Plate

Answer 10

Internal fracture repair
- circular holes for screws

Question 11

Mayo-Hegar Needle Holders

Answer 11

Resemble long-handled artery forceps
- have a ratchet
- no cutting edge

Question 12

Allis Tissue Forceps

Answer 12

Designed to grasp tissue with minimal trauma.
- more traumatic than babcocks
- not to be used on viscera (too delicate)

Question 13

Bone Cutters

Answer 13

Designed to cut larger pieces of bone

Question 14

Backhaus Towel Clip

Answer 14

Used to attach drape to patient to instrument to operating site.
- pointed end
- ratchet
- ringed handles
- more traumatic to tissue than cross action.

Question 15

Chisel

Answer 15

Used to cut/shave bone/cartilage.
- chisel bevelled on one side whereas osteome bevelled on both sides.

Question 16

Rat Tooth Forceps

Answer 16

Dissecting forceps used to hold tissue.
- held like a pencil
- toothed ends used for denser tissue
- plain ends used for delicate tissue

Question 17

Cortical Screw

Answer 17

Used in cortical bone (harder dense layer)
- threads are closer
- shallower
- Asif screw identified by hexagonal head.

Question 18

Cancellous Screw

Answer 18

Used in cancellous bone (soft, spongy)
- threads are further apart
- deeper
- ASIF screw identified by hexagonal head.

Question 19

Gillies Needle Holders

Answer 19

Designed for holding suture needles during suturing and knot tying.
- scissor action
- no ratchet
- needle has to be held in place by gripping

Question 20

Senn Retractor

Answer 20

Used to primarily retract surface tissue
- double ended retractor
- often used in small bone/joint procedures or thyroidectomies.

Question 21

Olsen-Hegar Needle Holders

Answer 21

• Needle holders
• cutting edge
• ratchet

Question 22

Ronguers

Answer 22

Used to cut out or nibble small pieces of dense tissue such as bone/cartilidge.

Question 23

Babcock Tissue Forceps

Answer 23

Used to grasp tissue with minimal trauma.
- less traumatic than allis tissue forceps
- Should not be used on viscera

Question 24

Periosteal Elevator

Answer 24

Used to lift periosteum and soft tissue of bone.
- tip must be protected and kept sharp

Question 25

Plate Blenders

Answer 25

Used to reshape plates around bone in order to repair fractures.