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Instruments used in anesthesiology

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Instruments used in anesthesiology

Following is a list of instruments used in the practice of anesthesia:

Instrument list

Instrument Uses[1][2]
Continuous-flow anesthetic machine used to provide a measured and continuous supply of gases (oxygen, nitrous oxide, etc.), mixed with a required concentration of anesthetic vapor to the patient at a required pressure and rate; vide link
Anesthetic vaporizers vaporizes the anesthetic
Oxygen mask to deliver oxygen or to administer aerosolized or gaseous drugs
Nasal oxygen set to deliver oxygen
Guedel airways[3] hard part of the airway maintenance that connects the mouth part to the pharyngeal part
Suction catheter Suction catheters used to remove secretions from the mouth, oropharynx, trachea and bronchii
Peripheral venous catheter
Water & sand weight bag
Artificial resuscitator (Bag valve mask) manual ventilation
Bain circuit respiratory maintenance circuit
Laryngoscope used to view larynx including the vocal cords, the glottis, etc.
Endotracheal tube a tube introduced into the patient's trachea to maintain a patient to ensure that air reaches the lungs for respiration
Laryngeal mask airway (LMA) a less painful but less useful alternative to an endotracheal tube
Tracheostomy tube it is a metal or plastic tube used to keep an artificial opening in front of the neck into the trachea open to act as an alternative pathway for respiration; vide tracheostomy
Endoscopes to look inside the esophagus, stomach, upper intestines, bile duct, larynx, trachea, bronchi-through the mouth
Eschmann stylet or Gum elastic bougie a flexible device introduced through the mouth during some intubation procedures; if the stylet is in the trachea, while passing in, gives a sensation of bumps and then finally stops going in at a point, it indicates that it was gliding over tracheal rings and has stopped at one of the bronchi (the patient may even cough during this time); if it goes into the esophagus, it will not bump and neither will it stop going in; used to judge where the endotracheal tube has gone in[4]
Filters air filters - to filter out dust particles or certain gases from the gas being given to the patient
Needles for injections, infusions, etc.
Tuohy needle for epidural catheter insertion
Lumbar puncture needle / Epidural anesthesia set / Spinal needle used for puncturing into the spine (or cisterns or fontanelles of a new born) for cerebro-spinal fluid aspiration or for injection drugs, specially anesthetics in spinal blocks, epidurals, etc.
Epidural catheter used to pass drugs into the epidural space
Syringe to inject drugs; larger ones can be used with mucus suckers
Mucus sucker to aspirate any fluid specially mucus from the respiratory passage
Variable performance devices
Fixed performance devices

Non-Kink Catheter Mount

Catheter mounts are of great use in anaesthesia to add that’extra length’ to breathing system when needed. The Non-Kink catheter mount is a modification to the standard catheter mounts used in anaesthesia. Catheter mounts made of plane rubber tubing kink when bent, while those made of corrugated rubber tubing kinked when twisted. This causes a great deal of inconvenience during anaesthesia for neurosurgery and other operations performed on the head and neck. To overcome this difficulty, Pakistan born scientist A.K Jamil (Anaesthetist,Manchester) designed the catheter mount which he named ;Non-kink catheter mount. He dismantled an ordinary catheter mount and discarded the rubber tube. A No.9 plain endotracheal tube was cut to the required length, covered with the armour of a flexible bath shower and connected to the distal and proximal pieces. The armour was then welded at both ends. The armour prevents kinking during flexion in different planes. The catheter mount may be twisted by about 180 without any change in performance. It has been tried in practice with satisfactory results. [5]

Anesthetic machine

General anesthesia does not require the anesthetic machine, tested daily, as basic equipment. Anesthesia machines may differ in appearance, size and degree of sophistication but generally speaking, they consist of sections for:

  • ventilation
  • space for monitoring equipment
  • accessories
  • storage space
  • worktop

It is imperative that essential medical pipeline gas supply, e.g. oxygen, nitrous oxide and air, are secured firmly to the machine, and readily available without any obstructions, defects or pressure leaks. They should also be checked in between cases, ensuring that the breathing apparatus and breathing circuit are fully patent, for the safe anesthesia of patients. Major manufacturers of anesthetic machines are General Electric (GE), Larsen & Toubro Limited, Draeger and MAQUET.

Image gallery


See also


  1. ^ Dorsch, Susan E.; Dorsch, Jerry A. (1999). Understanding anesthesia equipment. Baltimore: Williams & Wilkins. ISBN 0-683-30487-9.
  2. ^ Eisenkraft, James B.; Ehrenwerth, Jan (1993). Anesthesia equipment: principles and applications. St. Louis: Mosby. ISBN 0-8016-1556-9
  3. ^ Anaesthesia – Nasal Oxygen set Oxygen Catheter Mask Airways Suction Catheter
  4. ^ Eschmann Tracheal Tube - Introducer 15Ch x 60cm - SP Services (UK) Ltd
  5. ^ • •
  6. ^

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