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Chapter 28. Surgical Instruments and Aseptic Technique. Learning Objectives. Name and describe the commonly used surgical instruments State advantages of surgical stapling and list common surgical stapling devices

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chapter 28

Chapter 28

Surgical Instrumentsand Aseptic Technique

learning objectives
Learning Objectives
  • Name and describe the commonly used surgical instruments
  • State advantages of surgical stapling and list common surgical stapling devices
  • List commonly used instruments and equipment for ophthalmic, orthopedic, and arthroscopic procedures
learning objectives1
Learning Objectives
  • List surgical instruments and supplies routinely included in general and emergency surgical packs for small and large animals
  • Describe procedures for cleaning, packing, and sterilizing instruments
  • Differentiate between sterilization and disinfection
learning objectives2
Learning Objectives
  • List and describe physical and chemical methods of sterilization and methods of quality control of sterilization methods
  • State safe storage times for sterile packs
  • List and describe common antiseptic and disinfectant agents
learning objectives3
Learning Objectives
  • Describe preparation requirements for patients, including skin preparation, patient positioning, and draping
  • Describe preparation requirements for the surgical team and explain the procedures that may be used for hand scrubbing before surgery
  • Describe the procedure for donning surgical attire
  • Describe procedures for opening sterile items
technician s role during surgery
Technician’s Role During Surgery
  • Maintain aseptic technique
  • Assist in surgery
    • Immobilization of body part
    • Tissue retraction
    • Hemostasis control
  • Anticipate instruments needed
general surgery instruments
General Surgery Instruments
  • Thousands of different instruments
    • Increase efficiency
    • Ease performance
  • Specific purpose for each instrument

The most commonly used material is stainless steel, which is an alloy of iron, chromium, silicon, manganese, nickel, molybdenum, sulfur, phosphorus, and titanium. There are 2 basic compound types:

  • Martensitic- high carbon and low chromium content, rendering it very strong, highly magnetic, and susceptible to corrosion. i.e. thumb forceps, hemostats, retractors, etc.
  • Austenitic- stainless steel is compounded mainly of chromium and nickel. Superior in that is has high tensile strength and is very resistant to corrosion i.e. implants, pans, bowls, handles, and trays
  • Blades are task-specific
biomedical lasers
Biomedical Lasers
  • Most common types
    • Carbon dioxide (free beam; noncontact)
    • Neodymium:yttrium-aluminum-garnet (contact)

Measured in joules, effect depends on the wavelength

  • Advantages
  • Disadvantages
  • Electric current passes through tissue
    • Cut tissue
    • Coagulate tissue
  • Monopolarelectrosurgery
  • Bipolar electrosurgery
  • Parts
    • Electrosurgical unit
    • Foot switch
    • Monopolarhandpiece
    • Ground plate
    • Bipolar handpiece