Ch.11 Surgical Instruments

Question 1

Passivation

Answer 1

Nitric acid creating a thin non reactive chromium oxide layer - resist corrosion

Question 2

TC Tungsten Carbide

Answer 2

Inserts in steel, harder and more resistant to wear than high carbon stainless steel

Question 3

Titanium nitride

Answer 3

increased resistance to corrosion and wear
Reduced friction
Delay edge build up

Question 4

Sharpest cutting edges available

Answer 4

PC Power Cut
Black handle

Question 5

Scalpel holder

Answer 5

Knife handle no.3/no.7
blades 10-15

Knife handle no.4
blades 20-25

Question 6

Scissor

Answer 6

Mayo - dense ct
Metzenbaum - fascia+blunt dis
Littauer stitch
Wire
Lister bandage
Utility

Question 7

Needle driver

Answer 7

Olsen hegar - has scissor
Mayo hegar - no scissor
Mathieu - open box lock

Question 8

Thumb forceps

Answer 8

Rat tooth - 1-5 teeh
Adson - 1-2 teeth
Brown Adson - 2 longitutidal rows
Russian - Round tip w grooves
DeBakey - No teeth but serrations
Cooley - No teeth but serrations

Question 9

Hemostatic Forceps

Answer 9

1. Halstead mosquito
2. Kelly - transverse grooves distal half
3. Crile - Transverse grooves entire
4. Rochester Pean - Deep trans grooves entire
5. Rochester Carmalt - Longitudinal grooves with a few horizontal at tips
6. Rochester Oschner - Transverse grooves and teeth at tip
7. Kocher - Transverse grooves and teeth at tip

Question 10

Tissue Forceps

Answer 10

1. Doyen-DeBakey - intestinal forceps - least traumatic, bowed flexible jaws
2. Allis - 4-6 teeth at tip - peerpendicular to direction of pull
3. Babcock - teeth perpendicular to direction of pull - less traumatic than allis

Question 11

Clamps

Answer 11

1. Satinsky - Atraumatic, longitudinal grooved jaws, 2 bends. Used for vascular sx

Question 12

Towel Clamps

Answer 12

1. Backhaus - Most common
2. Roeder - like backhaus but with balls
3. Lorna-Edna - Nonpenetrating

Question 13

Finger Held Retractor

Answer 13

1. Senn - Blunt or sharp
2. Volkman Blunt/sharp, ring
3. Parker - Large deep flat blades
4. MeyerdingBlunt/sharp, ring

Question 14

Hand held retractor

Answer 14

1. Army navy - double
2. Hohmann - dbl
3. Meyerding - dbl
4. Lahey - single

Question 15

Self retaining retractor

Answer 15

1. Gelpi
2. Weitlaner
3. Balfour
4. Finochietto
5. Aanes

Question 16

Suction tubes

Answer 16

1. Yankauer
2. Frazier-Ferguson
3. Poole

Question 17

Rongeurs

Answer 17

1. Ruskin
2. Stile-Luer

Question 18

Curettes

Answer 18

1. Bruns/Spratt - handle one end, cup the other
2. Volkman - Cup on each end

Question 19

Periosteal Elevators

Answer 19

1. Adson
2. McIlwraith - sharp
3. Freer - double ended

Question 20

Bone Cutting
Chisels/osteotomes

Answer 20

1. Sontec-cottle - osteotome
2. Smith peterson osteotome
3. Hibbs chisel
4. Sontec mallet
5. Smith peterson gouge
6. Liston bone cutting forceps - single act
7. Ruskin-Liston - dbt action
8. Stille- liston dbl action

Question 21

Bone Clamps

Answer 21

1. Verbrugge
2. Kern
3. Stefan
4. Bone reduction clamp (A.O.)

Question 22

Trephines

Answer 22

1. Galt
2. Michele - Graduated scale - depth can be measured
3. Plug

Question 23

Electrosurgery

Answer 23

Pure cutting wave form - continuous, unmodulated, undampened

Coag waveform - interupted, modulated, dampened

Blend - coag during cutting

Question 24

Coblation

Answer 24

Cold ablation
Electric charges are passed through ionic solutions to produce a plasma