basic surgical instruments professor magdy amin riad professor of otolaryngology. ain shames...

Basic Surgical Instruments

Professor Magdy Amin RIAD

Professor of Otolaryngology. Ain shames University

Senior Lecturer in OtolaryngologyUniversity of Dundee

Principles of instruments handling

• Safety (patient and staff)

• Economy of movements

• Relaxed handling.

• Avoidance of awkward movements.

The Scalpel‘Table knife holding’

• For routine skin incisions.

• Tissue division with minimum trauma.

• Index finger guiding the blade

• Drawing the whole length of blade.

• Blade 15 is the workhorse of sharp dissection

• Do not use blunt blades

The Scalpel‘Pen holding’

• For finer work. • Blade 10 is used for finer

dissection.• Steady the arm by using

the little finger as a fulcrum.

• Pass scalpels in a kidney dish.

• Never pass it point-first across the table.

• Change blades by using a haemostat .

Sharp dissection

• Scalpels divide tissue with minimum damage.

• Tissues must be stretched to produce least trauma

• Tension must be applied at right angles to the direction of cutting

Sharp dissection with Scissors

• Although less sharp; When properly utilised , the tissue trauma is comparable to scalpel dissection.

• One blade tip is hidden from view.• Can be used for sharp and blunt

dissection.

Sharp dissection with diathermy

• Simultaneous partial tissue coagulation and haemostasis.

• Particularly useful in cutting muscles.

• Collateral tissue damage is a disadvantage.

Blunt dissection

• Splitting connective tissue close to important structures.

• Scissors, artery forceps or dissecting forceps.

• Tearing.

• wiping

Scissors

• 2 basic types of scissors; one for soft tissue and another for firmer tissues (bone, cartilage ,sutures..)

• Never use scissors that are too fine for the job.

• Blunt tip.• Edge-contact cutting.

Scissors

• Hold midway between pronation and supination.

• Distal phalanges only within the rings.

• Index finger over the joint to steady scissors.

• Steady scissors further by placing it over fingers of the other hand.

Dissecting forceps (thumb) forceps

• 2 main types:• Toothed for holding tougher

tissue with increasing force through the list; ducts, vessels, skin, fascia, cartilage and bone .

• Non-toothed for delicate tissues such as encapsulated solid organs; nodes, .

• Never crush tissues , hold structures with teeth punctures, rather than by compression between blades.

Dissecting forceps (thumb) forceps

• Ideal for a temporary and changing grip during dissection.

• Used to display structures during dissection.

• Can be used to tense loose structures before cutting.

• Used as a gentle retractor.• Round-nosed ,non-toothed

forceps make an excellent dissector.

• Learn to ‘palm’forceps while tying knots

Haemostats (Artery forceps)

• Hold in a similar manner to scissors.

• Dissectors for opening up tissue plans and tracks.

• May be used as tissue forceps, needle holders, knot-holding forceps, foreign body extractors, sinus forceps, and stitch removing forceps.

Haemostats (Artery forceps)

• Learn to release the haemostat using either hand.

• For small vessels lock with one click of the ratchet.

• For a major vessel tighten the grip further, over-tightening will cause forceps to spring.

• With minimal jerking and without springing.

Haemostats (Artery forceps)

• Pick vessels by the tip only, the grip lessens towards the joint.

Needle holder

• Grasp in a similar manner to scissors.

• Hold the needle in the tip of the jaws (maximum grip)

• Some holders have no ratchet lock e.g. Gilles for finer control

Tissue forceps

• Use when tissues cannot be separated by retractors.

• When tissues are slippery,

• Or when the direction of traction must be frequently varied.

Tissue forceps

• Rely for grip on the shape and area of blade, the roughness of opposing surface, interlocking teeth, sharp hooked blades, or a combination of these.

Tissue forceps

• Allis • Lane • Ring • Babcock• Duval• kocher

Retractors

• Hold aside tissues to explore deeper structures.

Retractors

• Hook• Malleable copper• Czerny• Deaver• Self-retaining• Gosset

Retractorsalternative methods

• Tape.• Hands• Dissecting forceps.• Retractors.• Packs.• Tissue forceps.

Handling bone

• Do not unnecessarily strip off periosteum;It provides bone vascular supply.Its deep layer is rich in osteoblasts.

• Exposure; with minimum trauma to retain intact nerve and blood supply of oerlying structures.

• Steadying; to prevent tools slipping and bone injury

Handling bone

• Cutting:

Saw

Chisel

Gouge

Osteotome

Rongeurs

Handling bone

• Rasping

• Drilling

• Screwing

• Wiring

• Stitching